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3310F Series Plug-In Electronic
Load module Operation manual
SN9003310F02 REVC
Material Contents Declaration (材料含量宣称)
Hazardous Substance (有毒有害物质或元素) (Part Name) 零件名称
铅(Pb) 汞(Hg) 镉(Cd)
六价铬
(Cr6+)
多溴联
苯(PBB)
多溴二苯醚
(PBDE)
PCBA (印刷电路装配件) x x
Electrical part not on PCBArsquos 未在PCBA上的电子零件 x x
Metal parts 金属零件 x
Plastic parts 塑料零件 x x
Wiring 电线 x
Package 封装 x
对销售之日的所售产品本表显示 PRODIGIT 供应链的电子信息产品可能包含这些物质注意在所售产品中可能
会也可能不会含有所有所列的部件This table shows where these substances may be found in the supply chain of Prodigit electronic information products as of the date of sale of the enclosed product Note that some of the component types listed above may or may not be a part of the enclosed product 表示该有毒有害物质在该部
件所有均质材料中的含量均在SJT 11363-2006 标准规定的限量要求以下Indicates that the concentration of the hazardous substance in all homogeneous materials in the parts is below the relevant threshold of the SJT 113632006 standard times表示该有毒有害物质至少在该部件的某一均质材料中的含量超出SJT 11363-2006 标准
规定的限量要求times Indicates that the concentration of the hazardous substance of at least one of all homogeneous materials in the parts is above the relevant threshold of the SJT 11363-2006 standard Note(注释) 1Prodigit has not fully transitioned to lead-free solder assembly at this momentHowever most of the components used are RoHS compliant (此刻Prodigit 并非完全过渡到无铅焊料组装但是大部份的元器件一至于RoHS的规定)
2 The product is labeled with an environment-friendly usage period in years The marked period is assumed under the operating environment specified in the product specifications (产品标注了环境友好的使用期限制(年)所标注的环境使用期限假定是在此产品定义的使用环境之下)
Example of a marking for a 10 year period (例如此标制环境使用期限为10年)
SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument PRODIGIT assumes no liability for the customers failure to comply with these requirements GENERAL This product is a Safety Class 1 instrument (provided with a protective earth terminal) The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions ENVIRONMENTAL CONDITIONS This instrument is intended for indoor use in an installation category I pollution degree 2 environments It is designed to operate at a maximum relative humidity of 80 and at altitudes of up to 2000 meters Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range BEFORE APPLYING POWER Verify that the product is set to match the available line voltage and the correct fuse is installed GROUND THE INSTRUMENT This product is a Safety Class 1 instrument (provided with a protective earth terminal) To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument must be connected to the ac power supply mains through a three conductor power cable with the third wire firmly connected to an electrical ground (safety ground) at the power outlet Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury FUSES Only fuses with the required rated current voltage and specified type (normal blow time delay etc) should be used Do not use repaired Fuses or short circuited fuse holder To do so could cause a shock or fire hazard DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified service personnel Do not replace components with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT EXCEED INPUT RATINGS This instrument may be equipped with a line filter to reduce electromagnetic interference and must be connected to a properly grounded receptacle to minimize electric shock hazard Operation at line voltages or frequencies in excess of those stated on the data plate may cause leakage currents in excess of 50 mA peak DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a PRODIGIT ELECTRONICS Sales and Service Office for service and repair to ensure that safety features are maintained Instruments which appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel
DECLARATION OF CONFORMITY
Company Name PRODIGIT ELECTRONICS CO LTD Address 8F No88 Baojhong Rd Sindian City Taipei CountyTaiwan ROC Declares under sole responsibility that the product as originally delivered Product Names DC Electronic Loads Model Numbers 3310F3311F3312F3314F3315F3300F3302F3305F (And other customized products based upon the above) Product Options This declaration covers all options and customized products based on the above products Complies with the essential requirements of the Low Voltage Directive 7323EEC and the EMC Directive 89336EEC (including 9368EEC) and carries the CE Marking accordingly EMC Information Class I a sample of the product has been assessed with respect to CE-marking according to the Low Voltage Directive (7323EECamp 9368EEC) and EMC Directive (89336EEC9231EEC amp 9368EEC) and Found to comply with the essential requirements of the Directives The Standard(s) used for showing the compliance and the full details of the results are given in the Test Reports as detailed below Safety Information Safety standards following IEC 61010-12001 EN 61010-12001 Jun 21 2009 Date
Larsson Tsou RampD Assistant Manager The holder of the verification is authorized to use this verification in connection with the EC declaration Of conformity according to the Directives The CE marking may only be used if all releveant and effective EC Directives are complied with Together with the manufacturerrsquos own documented production control The manufacturer (or his European authorized representative) can in his EC Declaration of Conformity Verify compliance with the directives
SAFETY SYMBOLS
Direct current (DC)
Alternating current (AC)
Both direct and alternating
Three-phase alternating current
Off (Supply)
On (Supply)
Protective earth (ground)
CautionRefer to this manual before using the meter
Caution risk of electric shock
CAT IV ndash Is for measurements performed at the source of the low-voltage
installation
CAT III ndash Is for measurements performed in the building installation
CAT II ndash Is for measurements performed on circuits directly connected to the low-
voltage installation
CAT I ndash Is for measurements performed on circuits not directly connected to Mains
Fuse
3310F series module load operation manual Table of Contents
Chapter 1 Introduction middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1
1-1 GENERAL DESCRIPTION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 1-2 FEATURESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-3 ACCESSORIESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-4 SPECIFICATIONSmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 1-5 BLOCK DIAGRAMmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11
Chapter 2 Installationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 2-1 INSTALLATION AND REMOVAL OF 3310F SERIES PLUG IN MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 2-2 ENVIRONMENTAL REQUIREMENTS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-3 OBSERVE THE INTERNATIONAL ELECTRICAL SYMBOL LISTED BELOW middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-4 CLEANING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-5 POWER UPmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-6 CONNECTION TO THE LOAD INPUT TERMINAL ON THE REAR PANELmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3
Chapter 3 Operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-1 FRONT PANEL DESCRIPTIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-2 INITIAL SETTING OF 3310F SERIES LOAD MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 3-3 INPUT TERMINAL AND WIRE CONSIDERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 3-4 OPERATING FLOW CHART FOR EACH LOAD MODULE OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 3-5 PROTECTION FEATURES middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 22
Chapter 4 Applicationsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-1 LOCAL SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-2 REMOTE SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-3 CONSTANT CURRENT MODE APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 4-4 CONSTANT VOLTAGE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 4-5 CONSTANT RESISTANCE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 4-6 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 4-7 THE CONNECTION OF A MULTIPLE OUTPUT POWER SUPPLY middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 4-8 PARALLEL OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-9 ZERO-VOLT LOADING APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-10 POWER SUPPLY OCP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 4-11 POWER SUPPLY OPP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 4-12 POWER SUPPLY SHORT TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
Material Contents Declaration (材料含量宣称)
Hazardous Substance (有毒有害物质或元素) (Part Name) 零件名称
铅(Pb) 汞(Hg) 镉(Cd)
六价铬
(Cr6+)
多溴联
苯(PBB)
多溴二苯醚
(PBDE)
PCBA (印刷电路装配件) x x
Electrical part not on PCBArsquos 未在PCBA上的电子零件 x x
Metal parts 金属零件 x
Plastic parts 塑料零件 x x
Wiring 电线 x
Package 封装 x
对销售之日的所售产品本表显示 PRODIGIT 供应链的电子信息产品可能包含这些物质注意在所售产品中可能
会也可能不会含有所有所列的部件This table shows where these substances may be found in the supply chain of Prodigit electronic information products as of the date of sale of the enclosed product Note that some of the component types listed above may or may not be a part of the enclosed product 表示该有毒有害物质在该部
件所有均质材料中的含量均在SJT 11363-2006 标准规定的限量要求以下Indicates that the concentration of the hazardous substance in all homogeneous materials in the parts is below the relevant threshold of the SJT 113632006 standard times表示该有毒有害物质至少在该部件的某一均质材料中的含量超出SJT 11363-2006 标准
规定的限量要求times Indicates that the concentration of the hazardous substance of at least one of all homogeneous materials in the parts is above the relevant threshold of the SJT 11363-2006 standard Note(注释) 1Prodigit has not fully transitioned to lead-free solder assembly at this momentHowever most of the components used are RoHS compliant (此刻Prodigit 并非完全过渡到无铅焊料组装但是大部份的元器件一至于RoHS的规定)
2 The product is labeled with an environment-friendly usage period in years The marked period is assumed under the operating environment specified in the product specifications (产品标注了环境友好的使用期限制(年)所标注的环境使用期限假定是在此产品定义的使用环境之下)
Example of a marking for a 10 year period (例如此标制环境使用期限为10年)
SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument PRODIGIT assumes no liability for the customers failure to comply with these requirements GENERAL This product is a Safety Class 1 instrument (provided with a protective earth terminal) The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions ENVIRONMENTAL CONDITIONS This instrument is intended for indoor use in an installation category I pollution degree 2 environments It is designed to operate at a maximum relative humidity of 80 and at altitudes of up to 2000 meters Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range BEFORE APPLYING POWER Verify that the product is set to match the available line voltage and the correct fuse is installed GROUND THE INSTRUMENT This product is a Safety Class 1 instrument (provided with a protective earth terminal) To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument must be connected to the ac power supply mains through a three conductor power cable with the third wire firmly connected to an electrical ground (safety ground) at the power outlet Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury FUSES Only fuses with the required rated current voltage and specified type (normal blow time delay etc) should be used Do not use repaired Fuses or short circuited fuse holder To do so could cause a shock or fire hazard DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified service personnel Do not replace components with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT EXCEED INPUT RATINGS This instrument may be equipped with a line filter to reduce electromagnetic interference and must be connected to a properly grounded receptacle to minimize electric shock hazard Operation at line voltages or frequencies in excess of those stated on the data plate may cause leakage currents in excess of 50 mA peak DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a PRODIGIT ELECTRONICS Sales and Service Office for service and repair to ensure that safety features are maintained Instruments which appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel
DECLARATION OF CONFORMITY
Company Name PRODIGIT ELECTRONICS CO LTD Address 8F No88 Baojhong Rd Sindian City Taipei CountyTaiwan ROC Declares under sole responsibility that the product as originally delivered Product Names DC Electronic Loads Model Numbers 3310F3311F3312F3314F3315F3300F3302F3305F (And other customized products based upon the above) Product Options This declaration covers all options and customized products based on the above products Complies with the essential requirements of the Low Voltage Directive 7323EEC and the EMC Directive 89336EEC (including 9368EEC) and carries the CE Marking accordingly EMC Information Class I a sample of the product has been assessed with respect to CE-marking according to the Low Voltage Directive (7323EECamp 9368EEC) and EMC Directive (89336EEC9231EEC amp 9368EEC) and Found to comply with the essential requirements of the Directives The Standard(s) used for showing the compliance and the full details of the results are given in the Test Reports as detailed below Safety Information Safety standards following IEC 61010-12001 EN 61010-12001 Jun 21 2009 Date
Larsson Tsou RampD Assistant Manager The holder of the verification is authorized to use this verification in connection with the EC declaration Of conformity according to the Directives The CE marking may only be used if all releveant and effective EC Directives are complied with Together with the manufacturerrsquos own documented production control The manufacturer (or his European authorized representative) can in his EC Declaration of Conformity Verify compliance with the directives
SAFETY SYMBOLS
Direct current (DC)
Alternating current (AC)
Both direct and alternating
Three-phase alternating current
Off (Supply)
On (Supply)
Protective earth (ground)
CautionRefer to this manual before using the meter
Caution risk of electric shock
CAT IV ndash Is for measurements performed at the source of the low-voltage
installation
CAT III ndash Is for measurements performed in the building installation
CAT II ndash Is for measurements performed on circuits directly connected to the low-
voltage installation
CAT I ndash Is for measurements performed on circuits not directly connected to Mains
Fuse
3310F series module load operation manual Table of Contents
Chapter 1 Introduction middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1
1-1 GENERAL DESCRIPTION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 1-2 FEATURESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-3 ACCESSORIESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-4 SPECIFICATIONSmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 1-5 BLOCK DIAGRAMmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11
Chapter 2 Installationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 2-1 INSTALLATION AND REMOVAL OF 3310F SERIES PLUG IN MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 2-2 ENVIRONMENTAL REQUIREMENTS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-3 OBSERVE THE INTERNATIONAL ELECTRICAL SYMBOL LISTED BELOW middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-4 CLEANING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-5 POWER UPmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-6 CONNECTION TO THE LOAD INPUT TERMINAL ON THE REAR PANELmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3
Chapter 3 Operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-1 FRONT PANEL DESCRIPTIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-2 INITIAL SETTING OF 3310F SERIES LOAD MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 3-3 INPUT TERMINAL AND WIRE CONSIDERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 3-4 OPERATING FLOW CHART FOR EACH LOAD MODULE OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 3-5 PROTECTION FEATURES middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 22
Chapter 4 Applicationsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-1 LOCAL SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-2 REMOTE SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-3 CONSTANT CURRENT MODE APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 4-4 CONSTANT VOLTAGE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 4-5 CONSTANT RESISTANCE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 4-6 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 4-7 THE CONNECTION OF A MULTIPLE OUTPUT POWER SUPPLY middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 4-8 PARALLEL OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-9 ZERO-VOLT LOADING APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-10 POWER SUPPLY OCP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 4-11 POWER SUPPLY OPP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 4-12 POWER SUPPLY SHORT TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument PRODIGIT assumes no liability for the customers failure to comply with these requirements GENERAL This product is a Safety Class 1 instrument (provided with a protective earth terminal) The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions ENVIRONMENTAL CONDITIONS This instrument is intended for indoor use in an installation category I pollution degree 2 environments It is designed to operate at a maximum relative humidity of 80 and at altitudes of up to 2000 meters Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range BEFORE APPLYING POWER Verify that the product is set to match the available line voltage and the correct fuse is installed GROUND THE INSTRUMENT This product is a Safety Class 1 instrument (provided with a protective earth terminal) To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument must be connected to the ac power supply mains through a three conductor power cable with the third wire firmly connected to an electrical ground (safety ground) at the power outlet Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury FUSES Only fuses with the required rated current voltage and specified type (normal blow time delay etc) should be used Do not use repaired Fuses or short circuited fuse holder To do so could cause a shock or fire hazard DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified service personnel Do not replace components with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT EXCEED INPUT RATINGS This instrument may be equipped with a line filter to reduce electromagnetic interference and must be connected to a properly grounded receptacle to minimize electric shock hazard Operation at line voltages or frequencies in excess of those stated on the data plate may cause leakage currents in excess of 50 mA peak DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a PRODIGIT ELECTRONICS Sales and Service Office for service and repair to ensure that safety features are maintained Instruments which appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel
DECLARATION OF CONFORMITY
Company Name PRODIGIT ELECTRONICS CO LTD Address 8F No88 Baojhong Rd Sindian City Taipei CountyTaiwan ROC Declares under sole responsibility that the product as originally delivered Product Names DC Electronic Loads Model Numbers 3310F3311F3312F3314F3315F3300F3302F3305F (And other customized products based upon the above) Product Options This declaration covers all options and customized products based on the above products Complies with the essential requirements of the Low Voltage Directive 7323EEC and the EMC Directive 89336EEC (including 9368EEC) and carries the CE Marking accordingly EMC Information Class I a sample of the product has been assessed with respect to CE-marking according to the Low Voltage Directive (7323EECamp 9368EEC) and EMC Directive (89336EEC9231EEC amp 9368EEC) and Found to comply with the essential requirements of the Directives The Standard(s) used for showing the compliance and the full details of the results are given in the Test Reports as detailed below Safety Information Safety standards following IEC 61010-12001 EN 61010-12001 Jun 21 2009 Date
Larsson Tsou RampD Assistant Manager The holder of the verification is authorized to use this verification in connection with the EC declaration Of conformity according to the Directives The CE marking may only be used if all releveant and effective EC Directives are complied with Together with the manufacturerrsquos own documented production control The manufacturer (or his European authorized representative) can in his EC Declaration of Conformity Verify compliance with the directives
SAFETY SYMBOLS
Direct current (DC)
Alternating current (AC)
Both direct and alternating
Three-phase alternating current
Off (Supply)
On (Supply)
Protective earth (ground)
CautionRefer to this manual before using the meter
Caution risk of electric shock
CAT IV ndash Is for measurements performed at the source of the low-voltage
installation
CAT III ndash Is for measurements performed in the building installation
CAT II ndash Is for measurements performed on circuits directly connected to the low-
voltage installation
CAT I ndash Is for measurements performed on circuits not directly connected to Mains
Fuse
3310F series module load operation manual Table of Contents
Chapter 1 Introduction middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1
1-1 GENERAL DESCRIPTION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 1-2 FEATURESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-3 ACCESSORIESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-4 SPECIFICATIONSmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 1-5 BLOCK DIAGRAMmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11
Chapter 2 Installationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 2-1 INSTALLATION AND REMOVAL OF 3310F SERIES PLUG IN MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 2-2 ENVIRONMENTAL REQUIREMENTS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-3 OBSERVE THE INTERNATIONAL ELECTRICAL SYMBOL LISTED BELOW middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-4 CLEANING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-5 POWER UPmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-6 CONNECTION TO THE LOAD INPUT TERMINAL ON THE REAR PANELmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3
Chapter 3 Operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-1 FRONT PANEL DESCRIPTIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-2 INITIAL SETTING OF 3310F SERIES LOAD MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 3-3 INPUT TERMINAL AND WIRE CONSIDERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 3-4 OPERATING FLOW CHART FOR EACH LOAD MODULE OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 3-5 PROTECTION FEATURES middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 22
Chapter 4 Applicationsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-1 LOCAL SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-2 REMOTE SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-3 CONSTANT CURRENT MODE APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 4-4 CONSTANT VOLTAGE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 4-5 CONSTANT RESISTANCE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 4-6 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 4-7 THE CONNECTION OF A MULTIPLE OUTPUT POWER SUPPLY middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 4-8 PARALLEL OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-9 ZERO-VOLT LOADING APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-10 POWER SUPPLY OCP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 4-11 POWER SUPPLY OPP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 4-12 POWER SUPPLY SHORT TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
DECLARATION OF CONFORMITY
Company Name PRODIGIT ELECTRONICS CO LTD Address 8F No88 Baojhong Rd Sindian City Taipei CountyTaiwan ROC Declares under sole responsibility that the product as originally delivered Product Names DC Electronic Loads Model Numbers 3310F3311F3312F3314F3315F3300F3302F3305F (And other customized products based upon the above) Product Options This declaration covers all options and customized products based on the above products Complies with the essential requirements of the Low Voltage Directive 7323EEC and the EMC Directive 89336EEC (including 9368EEC) and carries the CE Marking accordingly EMC Information Class I a sample of the product has been assessed with respect to CE-marking according to the Low Voltage Directive (7323EECamp 9368EEC) and EMC Directive (89336EEC9231EEC amp 9368EEC) and Found to comply with the essential requirements of the Directives The Standard(s) used for showing the compliance and the full details of the results are given in the Test Reports as detailed below Safety Information Safety standards following IEC 61010-12001 EN 61010-12001 Jun 21 2009 Date
Larsson Tsou RampD Assistant Manager The holder of the verification is authorized to use this verification in connection with the EC declaration Of conformity according to the Directives The CE marking may only be used if all releveant and effective EC Directives are complied with Together with the manufacturerrsquos own documented production control The manufacturer (or his European authorized representative) can in his EC Declaration of Conformity Verify compliance with the directives
SAFETY SYMBOLS
Direct current (DC)
Alternating current (AC)
Both direct and alternating
Three-phase alternating current
Off (Supply)
On (Supply)
Protective earth (ground)
CautionRefer to this manual before using the meter
Caution risk of electric shock
CAT IV ndash Is for measurements performed at the source of the low-voltage
installation
CAT III ndash Is for measurements performed in the building installation
CAT II ndash Is for measurements performed on circuits directly connected to the low-
voltage installation
CAT I ndash Is for measurements performed on circuits not directly connected to Mains
Fuse
3310F series module load operation manual Table of Contents
Chapter 1 Introduction middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1
1-1 GENERAL DESCRIPTION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 1-2 FEATURESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-3 ACCESSORIESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-4 SPECIFICATIONSmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 1-5 BLOCK DIAGRAMmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11
Chapter 2 Installationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 2-1 INSTALLATION AND REMOVAL OF 3310F SERIES PLUG IN MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 2-2 ENVIRONMENTAL REQUIREMENTS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-3 OBSERVE THE INTERNATIONAL ELECTRICAL SYMBOL LISTED BELOW middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-4 CLEANING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-5 POWER UPmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-6 CONNECTION TO THE LOAD INPUT TERMINAL ON THE REAR PANELmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3
Chapter 3 Operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-1 FRONT PANEL DESCRIPTIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-2 INITIAL SETTING OF 3310F SERIES LOAD MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 3-3 INPUT TERMINAL AND WIRE CONSIDERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 3-4 OPERATING FLOW CHART FOR EACH LOAD MODULE OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 3-5 PROTECTION FEATURES middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 22
Chapter 4 Applicationsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-1 LOCAL SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-2 REMOTE SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-3 CONSTANT CURRENT MODE APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 4-4 CONSTANT VOLTAGE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 4-5 CONSTANT RESISTANCE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 4-6 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 4-7 THE CONNECTION OF A MULTIPLE OUTPUT POWER SUPPLY middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 4-8 PARALLEL OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-9 ZERO-VOLT LOADING APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-10 POWER SUPPLY OCP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 4-11 POWER SUPPLY OPP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 4-12 POWER SUPPLY SHORT TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
SAFETY SYMBOLS
Direct current (DC)
Alternating current (AC)
Both direct and alternating
Three-phase alternating current
Off (Supply)
On (Supply)
Protective earth (ground)
CautionRefer to this manual before using the meter
Caution risk of electric shock
CAT IV ndash Is for measurements performed at the source of the low-voltage
installation
CAT III ndash Is for measurements performed in the building installation
CAT II ndash Is for measurements performed on circuits directly connected to the low-
voltage installation
CAT I ndash Is for measurements performed on circuits not directly connected to Mains
Fuse
3310F series module load operation manual Table of Contents
Chapter 1 Introduction middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1
1-1 GENERAL DESCRIPTION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 1-2 FEATURESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-3 ACCESSORIESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-4 SPECIFICATIONSmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 1-5 BLOCK DIAGRAMmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11
Chapter 2 Installationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 2-1 INSTALLATION AND REMOVAL OF 3310F SERIES PLUG IN MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 2-2 ENVIRONMENTAL REQUIREMENTS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-3 OBSERVE THE INTERNATIONAL ELECTRICAL SYMBOL LISTED BELOW middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-4 CLEANING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-5 POWER UPmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-6 CONNECTION TO THE LOAD INPUT TERMINAL ON THE REAR PANELmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3
Chapter 3 Operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-1 FRONT PANEL DESCRIPTIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-2 INITIAL SETTING OF 3310F SERIES LOAD MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 3-3 INPUT TERMINAL AND WIRE CONSIDERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 3-4 OPERATING FLOW CHART FOR EACH LOAD MODULE OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 3-5 PROTECTION FEATURES middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 22
Chapter 4 Applicationsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-1 LOCAL SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-2 REMOTE SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-3 CONSTANT CURRENT MODE APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 4-4 CONSTANT VOLTAGE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 4-5 CONSTANT RESISTANCE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 4-6 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 4-7 THE CONNECTION OF A MULTIPLE OUTPUT POWER SUPPLY middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 4-8 PARALLEL OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-9 ZERO-VOLT LOADING APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-10 POWER SUPPLY OCP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 4-11 POWER SUPPLY OPP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 4-12 POWER SUPPLY SHORT TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3310F series module load operation manual Table of Contents
Chapter 1 Introduction middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1
1-1 GENERAL DESCRIPTION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 1-2 FEATURESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-3 ACCESSORIESmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 1-4 SPECIFICATIONSmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 1-5 BLOCK DIAGRAMmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11
Chapter 2 Installationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 2-1 INSTALLATION AND REMOVAL OF 3310F SERIES PLUG IN MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 2-2 ENVIRONMENTAL REQUIREMENTS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-3 OBSERVE THE INTERNATIONAL ELECTRICAL SYMBOL LISTED BELOW middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-4 CLEANING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-5 POWER UPmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 2-6 CONNECTION TO THE LOAD INPUT TERMINAL ON THE REAR PANELmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3
Chapter 3 Operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-1 FRONT PANEL DESCRIPTIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 3-2 INITIAL SETTING OF 3310F SERIES LOAD MODULE middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 3-3 INPUT TERMINAL AND WIRE CONSIDERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 3-4 OPERATING FLOW CHART FOR EACH LOAD MODULE OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 3-5 PROTECTION FEATURES middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 22
Chapter 4 Applicationsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-1 LOCAL SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-2 REMOTE SENSE CONNECTIONS middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 4-3 CONSTANT CURRENT MODE APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 4-4 CONSTANT VOLTAGE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 4-5 CONSTANT RESISTANCE MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 4-6 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 4-7 THE CONNECTION OF A MULTIPLE OUTPUT POWER SUPPLY middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 4-8 PARALLEL OPERATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-9 ZERO-VOLT LOADING APPLICATION middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 8 4-10 POWER SUPPLY OCP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 4-11 POWER SUPPLY OPP TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 4-12 POWER SUPPLY SHORT TESTING middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
Figures
Fig 1-1 3310F 60V30A150W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-2 3311F 60V60A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 1-3 3312F 250V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-4 3314F 500V12A300W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-5 3315F 60V15A75W power contour middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 1-6 Constant Current mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-7 Constant Resistance mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 1-8 Constant Voltage mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-9 Constant Power mode middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 1-10 Dynamic Wave form middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 1-11 Rise Time Transition Limitation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 1-12 Block Diagram of 3310F series Electronic Loadmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 2-2 Plug-in installation and removalmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 2 Fig 3-1 Front panel of 3310F plug-in modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 3-2 3310F Series Electronic Load connection TYPEmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 11 Fig 3-3 typical connection of 3310F series load modulemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 12 Fig 3-4 An equivalent circuit in terms of the current monitor middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-5 (Correct) Connections to an oscilloscopemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 13 Fig 3-6(Wrong) Connections to an oscilloscope middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot14 Fig 3-7 Analog programming load current in CC mode operation middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 16 Fig 3-8 Hook Terminal Y type Large size terminal connections middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 19 Fig 3-9 3310F series electronic load module load condition setting flow chartmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 21 Fig 4-1 Local voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-2 Remote voltage sense connectionsmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 1 Fig 4-3 constant CURRENT mode application middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot2 Fig 4-4 Dynamic load current with independent programmed RiseFall slew ratemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 3 Fig 4-5 Constant Voltage mode applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 4 Fig 4-6 Constant Resistance mode Applicationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 5 Fig 4-7 CONSTANT POWER MODE APPLICATIONmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 6 Fig 4-8 Connection between 3310F series plug-in load and multiple output power supplymiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 7 Fig 4-9 3310F series plug-in module parallel operationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot8 Fig 4-10 Zero-Volt loading connectionmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9
Tables
Table 1-1 3310F Series Specification (Continued) middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 9 Table 1-1 3310F Series Specificationmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 10 Table 3-1 3310F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-2 3311F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 17 Table 3-3 3312F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-4 3314F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-5 3315F initializemiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 18 Table 3-6 Stranded Copper Wire Ampere Capacity middotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot 20
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 1 - 1
Chapter 1 Introduction 1-1 General description
The 3310F series Electronic Load module is designed to test evaluation and burn-in of DC power supplies and batteries The 3310F series electronic load module can be operated on the 3300F3302F3305F Electronic Load mainframe for manual operating 150 sets storerecall memory of mainframe GPIB and RS-232 operation and can be operated on the 3300A3302 mainframe for manual and 5 sets storerecall memory operation only The power contour of 3310F 150 watts Electronic Load is shown in Fig 1-1 it has an input from 0-30A and 0-60V current and voltage operating range respectively The power contour of 3311F (60V 60A 300W) 3312F (250V 12A 300W) 3314F (500V 12A 300W) and 3315F (60V 15A 75W) Electronic Load are shown in Fig 1-2 1-3 1-4 and 1-5 respectively The Prodigit 3310F series plug-in Electronic Load can be stored or recalled 150 sets memory on the 3300F3302F3305F mainframe or five sets memory on 3300A3302 mainframe all the load modules within the mainframe will go to the previous store state simultaneously for a memory recall operation on the mainframe
Fig 1-1 3310F 60V30A150W power contour
Fig 1-2 3311F 60V60A300W power contour
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
1 - 2 3310F Series Operation Manual PRODIGIT
Fig 1-3 3312F 250V12A300W power contour
Fig 1-4 3314F 500V12A300W power contour
Fig 1-5 3315F 60V15A75W power contour
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 1 - 3
The operating mode of 3310F series Electronic Load includes Constant Current ( CC ) mode Constant Resistance ( CR ) mode Constant Voltage ( CV ) mode and Constant Power ( CP ) mode The wide-range dynamic load with independent risefall current slew rate and analog programming input with arbitrary waveform input is available in Constant Current and Constant Power mode this feature enable 3310F series electronic load to simulate real world load CC Mode With the operating mode of Constant Current the 3310F series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig1-6)
I
V
CC
LOADCURRENT
CURRENT SETTING
INPUT VOLTAGE
Fig 1-6 Constant Current mode
CR Mode At Constant Resistance mode the 3310F series Electronic Load will sink a current linearly proportional to the load input voltage in accordance with the programmed resistance setting (see Fig 1-7)
I
V
LOADCURRENT
INPUT VOLTAGE
RESISTANCE SETTING
Fig 1-7 Constant Resistance mode
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
1 - 4 3310F Series Operation Manual PRODIGIT
CV Mode At Constant Voltage mode the 3310F series Electronic Load will attempt to sink enough current until the load input voltage is equaled to the programmed value (see Fig 1-8)
I
V
LOADCURRENT
INPUT VOLTAGE
VOLTAGESETTING
Fig 1-8 Constant Voltage mode
CP Mode At Constant Power mode the 3310F series Electronic Load will attempt to sink load power (load voltage x load current) in accordance with the programmed power (see Fig 1-9)
V
0 I
POWERSETTING
Fig 1-9 Constant Power mode
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 1 - 5
Dynamic wave form definition There are six parameters to generate dynamic wave form or pulse wave form the 3310F series Electronic Load will sink current from power source proportional to the dynamic wave form the dynamic wave form definition is shown in Fig 1-10 The period of dynamic wave form is Thigh + Tlow dynamic frequency = 1 ( Thigh + Tlow ) the Duty cycle = Thigh ( Thigh + Tlow ) The Dynamic load can simulate real world load condition it provides a better testing and evaluation for the power source products the dynamic loading is available for CC (Constant Current)and CP (Constant Power) mode
I
V
LOADCURRENT
RISESLEW RATE
HIGH LOAD
LOAD
LOW LOAD
LEVEL
THIGH
TLOW
FALL SLEW RATE
Fig 1-10 Dynamic Wave form
The load current level and load status can be set on Front panel of each load module mainframe storerecall memory or GPIBRS-232 command through mainframe interface it is called module operation mainframe storerecall operation and GPIBRS-232 remote operation respectively the load input voltage and load current can be read back to computer through GPIB or RS-232 bus The mainframe storerecall and GPIBRS-232 remote operation is described in 3300F3302F3305F mainframes operation manual
Slew Rate Slew rate is defined as the change in current or voltage over time A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring or to control induced transients on a test device (such as would occur during power supply transient response testing)
In cases where the transition from one setting to another is large the actual transition time can be calculated by dividing the voltage or current transition by the slew rate The actual transition time is defined as the time required for the input to change from 10 to 90 or from 90 to 10 of the programmed excursion In cases where the transition from one setting to another is small the small signal bandwidth of the load limits the minimum transition time for all programmable slew rates Because of this limitation the actual transition time is longer than the expected time based on the slew rate as shown in Figure 1-11
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
1 - 6 3310F Series Operation Manual PRODIGIT
Slew Rate
Expected time
Actual Time
10 0
100 90
Vol
tage
(Vol
ts)
Or
Cur
rent
(Am
ps)
Slew Rate
TimemS
Fig 1-11 Rise Time Transition Limitation
Therefore both minimum transition time and slew rate must be considered when determining the actual transition time
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 1 - 7
1-2 Features 121 Flexible configuration of plug-in Electronic Load module and mainframe 122 CC CR CV CP Dynamic and Short Operating Mode 123 Remote control of Load condition setting and meter read back 124 Dual high accuracy amp resolution 16 bit voltage and current meter 125 Built-in pulse generator includes wide ThighTlow dynamic load range independent
RiseFall load current slew rate control and HighLow Load level 126 Controllable load current slew rate of load level change load ONOFF switch
change and power supply turn ON 127 Short circuit test and current measure capability 128 Programmable voltage sense capability 129 Full protection from over power over temperature over voltage and reverse
polarity 1210 Analog programming input capability at each load module 1211 NON-Isolated I-monitor BNC output 10V full scale 1212 Digital Calibration 1213 Advance Fan speed control 1214 Up to 150 Sets StoreRecall EEROM memory
1-3 Accessories a 4mm Banana Plug (Red) 1PC b 4mm Banana Plug (Black) 1PC c 2mm Banana Plug (Red) 1PC d 2mm Banana Plug (Black) 1PC e Hook Terminal Y type Large size terminal 4PCS f Hook Terminal Y type Small size terminal 2PCs g 3310F series operation manual 1PC
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
1 - 8 3310F Series Operation Manual PRODIGIT
137 Accessories Installation Description
1-4 Specifications
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 1 - 9
MODEL 3310F 3311F 3312F MAX POWER 150W 300W 300W
MAX CURRENT 30A 60A 12A OPERATION VOLTAGE 60V 60V 250V
OVER POWER PROTECTION ≒ 1575W ≒ 315W ≒ 315W
OVER CURRENT PROTECTION ≒ 315A ≒ 63A ≒ 126A
OVER VOLTAGE PROTECTION ≒ 63V ≒ 63V ≒ 2625V
OVER TEMP PROTECTION ≒ 85 ≒ 85 ≒ 85 RANGE 0 - 3A 0 - 30A 0 - 6A 0 - 60A 0 ndash 12A 0 ndash 12A
RESOLUTION 005mA 05mA 01mA 1mA 002mA 02mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 2-120KΩ 002-2Ω 1-60KΩ 00083-1Ω 25-1500KΩ 008-25ΩRESOLUTION 00083mS 0033mΩ 00166mS 00166mΩ 000066mS 04166mΩCR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 - 6V 0-60V 0 - 6V 0-60V 0 - 30V 0-250V RESOLUTION 01mV 1mV 01mV 1mV 05mV 10mV CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 15W 0-150W 0 ndash 30W 0-300W 0 ndash 30 W 0-300W RESOLUTION 1mW 10mW 1mW 10mW 1mW 10mW CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW 50uSec TO 9999Sec
OPERATION SLEW RATE 20-125 mAuSeC
20-1250 mAuSec
4-250 mAuSec
40-2500 mAuSec
08-50 mAuSec
8-500 mAuSec
ACCURACY plusmn ( 5 OF SETTING) plusmn10uS VOLTAGE RANGE 60V 600V 60V 600V 300V 2500V
READBACK RESOLUTION 00001V 0001V 00001V 0001V 0001V 001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 30A 300A 60A 600A 12A 120A
READBACK RESOLUTION 00001A 0001A 00001A 0001A 00002A 00002A (A METER) ACCURACY plusmn 01OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 025 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE) PROGRAMMABLE SHORT BUILT ndash IN LOAD ON VOLTAGE 01 - 25V 01 - 25V 02 - 50V ACCURACY 1 of (Setting + Range)
LOAD OFF VOLTAGE 0 ndash 25V 0 - 25V 0 - 50V ACCURACY 0025 of (Setting + Range)
Typical SHORT RESISTANCE 002Ω 00083Ω 008Ω MAXSHORT CURRENT 30A 60A 12A
Table 1-1 3310F Series Specification (Continued)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
1 - 10 3310F Series Operation Manual PRODIGIT
MODEL 3314F 3315F
MAX POWER 300W 75W MAX CURRENT 12A 15A
OPERATIONVOLTAGE 500V 60V OVER POWER PROTECTION
≒ 315W ≒7875W
OVER CURRENT PROTECTION
≒ 126A ≒1575A
OVER VOLTAGE PROTECTION
≒ 525V ≒ 63V
OVER TEMP PROTECTION
≒ 85 ≒ 85
RANGE 0 ndash 12A 0 - 12A 0-15A 0-15A RESOLUTION 002mA 02mA 00254mA 025mA CC MODE ACCURACY plusmn 01OF(SETTING + RANGE)
RANGE 50-3000KΩ 05-50Ω 4-240KΩ 002-4Ω RESOLUTION 000033mS 08333mΩ 004166mS 00666mΩ CR MODE ACCURACY plusmn 02 OF (SETTING + RANGE)
RANGE 0 ndash 60V 0-500V 0 ndash 6V 0-60V RESOLUTION 0001V 001V 00001V 0001V CV MODE ACCURACY plusmn 005 OF (SETTING + RANGE)
RANGE 0 - 30W 0-300W 0 ndash 75W 0-75W RESOLUTION 0001W 001W 0000125W 000125W CP MODE ACCURACY plusmn 05 OF (SETTING + RANGE)
DYNAMIC THIGH TLOW
50uSec TO 9999Sec
OPERATION SLEW RATE 08-50 mAuSec
80-500 mAuSec
10-625 mAuSec
100-625 mAuSec
ACCURACY plusmn (5 OF SETTING) plusmn10uS VOLTAGE RANGE 600V 5000V 60V 600V
READBACK RESOLUTION 0001V 001V 00001V 0001V (V METER) ACCURACY plusmn 0025 OF (READING + RANGE) CURRENT RANGE 12A 12A 15A 150A
READBACK RESOLUTION 000002A 00002A 0000025A 000025A (A METER) ACCURACY plusmn 005 OF (READING + RANGE)
CURRENT MONITOR FULL SCALE 10V (NON-ISOLATED WITH LOAD MODULE) ACCURACY 05 OF (SETTING + RANGE)
CURRENT PROGRAM INPUT
FULL SCALE 10V (ISOLATED WITH OTHER LOAD MODULE)
PROGRAMMABLE SHORT BUILT - IN LOAD ON VOLTAGE 04 - 100V 01 - 25V
ACCURACY 1 of (Setting + Range) LOAD OFF VOLTAGE 0 - 100V 0 - 25V
ACCURACY 0025 of (Setting + Range) MAX SHORT RESISTANCE 05Ω 002Ω
MAXSHORT CURRENT 12A 15A
Table 1-1 3310F Series Specification
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 1 - 11
1-5 Block diagram The functional block diagram of 3310F series Electronic Load module is illustrated in Fig 1-12 Please refer to the operation manual of 3300F mainframe for the functional Block diagram mainframe
Fig 1-12 Block Diagram of 3310F series Electronic Load
The remote programming load level status is received through isolated serial port from 3300F3302F3305F mainframe The dual 12 bit DA converter converts the programmed HighLow load level data to the analog signal then feeds to the input of staticdynamic function control circuit the load current slew rate is controlled by the two 8 bit DA converters for rise and fall slew rate respectively the Thigh and Tlow duration is set by two 16 bit trimmer these six parameters constitute the wide range pulse generator and can be used to test the power supply (Unit Under Test) The Constant Current (CC) Constant Resistance (CR) Constant Voltage (CV) and Constant Power (CP) control and range circuitry is selected depending upon which operating mode and range are programmed The drive circuit controls the load current flow through power MOSFET is proportional to the analog control signal the load power is dissipated on the power MOSFET on the heat sink and the load power energy is converted to heat The current sense Amplifier feeds the load current signal which includes short circuit current signal to 16bit DAM on 5digit LCD display and isolated amplifier (I-monitor BNC output) The I-monitor function is not available in 3312F and 3314F module The voltage sensing circuit selects the Load input terminal or V-sense BNC input depends on the V-sense programmed setting The Auto ranged 16bit high accuracy digit voltage meter indicates the input voltage on 5digit LED display
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
1 - 12 3310F Series Operation Manual PRODIGIT
The 16 bit voltage and current meter digital bus is connected to CPU circuitry each 3310F series load module can transfer the meter readings to 3300F mainframe through isolated serial circuitry
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 2 - 1
Chapter 2 Installation This chapter discusses the installation and removal procedure of 3310F series load module and 3300F quad module mainframe the 3310F series load module does not need any adjustment after plug in the 3310F series load module to any channel of the 3300F mainframe It is the same procedures for installation and removal when 3302F single module mainframe is used
Fig 2-1 Binding post and withdraw handle on the front panel of 3310F series Plug-in load module
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
2 - 2 3310F Series Operation Manual PRODIGIT
2-1 Installation and Removal of 3310F series plug in module Unless the 3300F3302F3305F mainframe and 3310F series Electronic load module were purchased separately the 3310F series Electronic load module should be installed in the 3300F mainframe before shipment from Prodigit The 3310F series Electronic load module operates in 3300F3302F3305F mainframe for front panel mainframes 150 sets storerecall and remote control feature When you want to install or remove the 3310F series load module in or out from the 3300F 3302F3305Fmainframe for configuration reconfiguration purpose please follow the procedures which are listed below
Fig 2-2 Plug-in installation and removal
211 Installation of 3310F series plug-in load
2111 Turn the 3300F3302F3305F mainframe power OFF before inserting the 3310F series load module or damage may occur to the plug-in module circuitry
2112 A line the upper and lower grooves of the 3300F mainframe with the upper and lower guides of the selected compartment
2113 Push the 3310F series load module in and press firmly on the binding posts of the front panel to seat the circuit board in the interconnecting jack
2114 Fasten the screw on the lower and right hand side corner of the 3310F series front panel with screw driver the screw location is shown on Fig 2-1
2115 Turn the 3300F3302F3305F mainframe power ON until all of the electronic modules are completely installed
212 Removal of 3310F series plug-in load
2121 Turn the 3300F3302F3305F mainframe power OFF first Otherwise
damage may occur to the plug-in circuitry 2122 removal the module by withdraw handle which on the lower and right hand
side of 3310F series front panel
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 2 - 3
2-2 Environmental requirements 221 Indoor use 222 Installation Category I 223 Pollution Degree 2 224 Relative Humidity 80 Max 225 Ambient Temperature 0 ~ 40
2-3 Observe the International Electrical Symbol listed below WarningRisk of electric shock CautionRefer to this manual before using the meter
2-4 Cleaning
Before you clean this product power this product off and disconnect the power plug Please do NOT use any organic solvent capable of changing the nature of the plastic such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
2-5 Power Up Operation check
251 Turn off (O) the POWER switch 252 Check that the power cord is corrected 253 Check that nothing is connected to the DC INPUT (load input terminal) on the
front and rear panels
2-6 Connection to the load Input Terminal on the Rear Panel
Connection procedure of the load input terminal on the rear panel
261 Turn off POWER switch 262 Check that the output of the equipment under test is off
263 Connect the load wire to the load input terminal on the rear panel 264 Check the polarity of the connection and connect the load wire to the output
terminal of the equipment under test
To clean this product use a soft or wet cloth
Before you clean this product power this product off and disconnect the power plug Please do Not use any organic solvent capable of changing the nature of the plastic
such as benzene or acetone Please pay attention that any liquid should not be penetrated into this product
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 1
Chapter 3 Operation This chapter describes the front panel function and operation of each 3310F series load module the memory StoreRecall GPIBRS-232CUSBLAN remote programming are described in the 3300F3302F3305F mainframe operation manual Please refer to the mainframes operation manual for mainframe storerecall and GPIBRS-232CUSBLAN programming
3-1 Front panel description
Fig 3-1 Front panel of 3310F plug-in module
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 2 3310F Series Operation Manual PRODIGIT
311 3310F 60V30A 150W DC ELECTRONIC LOAD It indicates the model number and specifications of 3310F series electronic load
312 NG Indicator
When the reading of Vmeter Ameter Watt meter exceeds the upper or lower limit set this indicator will display
313 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode LED will be lit respectively when the appropriate operating mode is selected The operating theorem of CC CR CV and CP mode is described in Chapter 1-1 and the application information is described in Chapter 4-3 4-4 4-5 and 4-6 respectively There are two programming ranges in Constant Current and Constant resistance mode respectively the 3310F series can adjust to the best fit range automatically according to the programmed load level The rule is described below
3131 In Constant Current mode (example of 3311F)
The Range I (6A) indicates low load current operating range Range II (60A) indicated high load current operating range the detail specification of range load current is listed on the Table 1-1 the current range is changed automatically in accordance to the programmed load current The range 1 is selected automatically if the programmed load current is less than the maximum current of range 1 (6A) and will set to range II automatically when the programmed current is higher than the maximum current of range 1 (6A)
3132 In Constant Resistance mode
Range I indicates low load resistance operating range Range II indicates high load resistance operating range the detail resistance range specifications is shown in table 1-1 The resistance range is changed automatically in accordance to the programmed load resistance The 3311F electronic load will set to range 1 automatically if the programmed load resistance is higher than the minimum load resistance of range 1 and will set to range II when the programmed load resistance is lower than the minimum load resistance of range 1
314 Remote LCD Indicator
The Remote LCD Indicator is used to indicate the status of remote operation all of the front panel operation can not be operated while Remote LCD is ON in case of Local mode or manual operation the Remote LCD is OFF
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 3
315 Upper 5 digit LCD display The 5 digit LCD display is a multi-function display the functions are described below
Normal mode There is a 5 digit DVM display display measuring data of the DC input terminal or V-sense input terminal if V-sense AUTO is programmed or the 5 digit voltage meter displays the voltage of V-sense input terminal if V-sense ON is programmed When the auto-sense of V-sense function is programmed the auto-sense circuit of 3310F series electronic load can check the V-sense cable is connected or not the V-sense BNC input is detected if it is greater than 05V (3310F 3311F) or 25V (3312F) or not if yes then the 5 digit DVM measures the sense BNC input otherwise the 5 digit DVM measures the DC input terminals of the load module Test Setting Mode Short Short test Enable and Short Setting programmingDisplay will show
ldquoShortrdquo OPP OPP test Enable and OPP Setting programmingDisplay will showrdquoOPPrdquo OCP OCP test Enable and OCP Setting programmingDisplay will showrdquoOCPrdquo Short testingOCP testing and OPP testing programming will show Vsensersquos voltage or load Input voltage
316 Middle 5 digit LCD display Normal mode
There is a 5 digit DAM display The 5 digit DAM displays the measuring current of the DC load When Load ON programming
Setting Mode 3161 Config ON programming Display will individually showrdquoSENSErdquo ldquoLDonrdquo
ldquoLDoffrdquo and ldquoPOLARrdquo 3162 Limit ON programmingDisplay will individually showrdquoV_Hirdquo ldquoV_Lordquo
ldquoA_Hirdquo ldquoA_Lordquo ldquoW_Hirdquo ldquoW_Lordquo and ldquoNGrdquo 3163 DYN setting ON programmingDisplay will individually show rdquoT-Hirdquo rdquoT-
Lordquo rdquoRISErdquo and ldquoFALLrdquo 3164 Short test EnableOCP test Enable and OPP test Enable programming
Display will individually show 「PRESS」 3165 Short setting programmingDisplay will individually show ldquoTImErdquo ldquoV-Hirdquo
and ldquoV-Lordquo 3166 OPP setting programming Display will individually show ldquoPSTARrdquo
ldquoPSTEPrdquo ldquoPSTOPrdquo and ldquoVthrdquo 3167 OCP setting programming Display will individually show ldquoISTARrdquo
ldquoISTEPrdquo ldquoISTOPrdquo and rdquoVthrdquo 3168 Short testing programming the current of actual load current the unit is
A 3169 OCP testing programming the setting current the unit is A 31610 OPP testing programming the setting watt the unit is A 31611 When Over current protectDisplay will show 「OCP」
317 Lower 5 digit LCD display Normal modeThe Lower 5 digit LED display is show load Consumption duty Setting Mode Setting value is by rotating knob switch 3171 PRESET ON mode display will individually show
31711 CC modes current programming value display the unit is A
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 4 3310F Series Operation Manual PRODIGIT
31712 CR modes resister programming value display the unit is ldquoΩrdquo 31713 CV modes voltage programming value display the unit is ldquoVrdquo 31714 CP modes power programming value display the unit is ldquoWrdquo
3172 LIMIT ON mode display will individually show 31721 V_Hi(upper limit voltage) amp V_Lo(lower limit voltage) value display the
unit is V 31722 A_Hi(upper limit current) amp A_Lo(lower limit current) value display the
unit is A 31723 W_Hi(upper limit power) amp W_Lo(lower limit power) value display the
unit is W 31724 NG programming display will show 「ON」or 「OFF」
3173 DYN setting ON mode display will individually show 31731 T-Hi(level high time)amp T-Lo(level low time) programming value display
the unit is ms 31732 RiseFall current slew rate programming value display the unit is
Aus or AmS 3174 Config ON mode display will individually show
31741 SENSE programming display will show「ON」or「AUTO」 31742 LDon amp LDoff value display the unit are V 31743 Load polarity value display will show「+LOAD」or「-LOAD」
3175 Short test EnableOCP test Enable and OPP test Enable mode will show「START」
3176 Short Setting mode 31761 Short setting display will show ldquoCONTIrdquo Short time setting the unit is
ldquomSrdquo 31762 V-Hi amp V-Lo value display the unit is V
3177 OPP Setting mode 31771 OPP PSTAROPP PSTEP and OPP PSTOP value display the unit is
ldquoWrdquo 31772 OPP Vth value display the unit is ldquoVrdquo
3178 OCP Setting mode 31781 OCP ISTAR OCP ISTEP and OCP ISTOP value display the unit is
ldquoArdquo 31782 OCP Vth value display the unit is ldquoVrdquo
3179 OCP test amp OPP test mode display will show「RUN」 31710 When Over power protectDisplay will show 「OPP」 31711 When Over temperature protectDisplay will show 「OTP」
318 MODE and CC CR CV CP Indicator
There are four operating modes can be selected by press the MODE key on the 3310F series Electronic Load module The sequence is Constant Current ( CC ) Constant Resistance ( CR ) Constant Voltage ( CV ) Constant Power ( CP ) and then repeat while press the MODE key the CC CR CV CP mode indicator will be lit respectively when the appropriate operating mode is selected
319 LOAD ONOFF key and LED
The 3310F series Electronic Load input can be toggled ONOFF at the front panels LOAD ONOFF key The load current slew rate change uses the slew rate setting so the load current slew rate will change at the programmed RiseFall slew rate setting respectively
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 5
Turning the LOAD OFF does not affect the programmed settings The LED is OFF to indicate LOAD OFF status The LOAD will return to the previously programmed values when the LOAD key is turned to ON again The Load ON LED indicates the 3310F series electronic load is ready to sink current from DC input
3191 Load ONOFF key Switch load ON to load OFF in the load module the fall slew rate is according to the slew rate setting on the front panel
3192 DC input voltage There is a load ON and load OFF voltage control circuit in
3310F series electronic load When the Device under Test turns ON the output voltage of DUT will increase up from 0 to rated output voltage The 3310F series electronic load will start to sink current after load voltage is higher than load ON voltage setting within the Config key The programmed load ON voltage for model 3310F 3311F 3315F load module is from 0 to 25V model 3312F is from 0 to 50V and model 3314F is from 0 to 100V When the Device under Test turns OFF the output voltage of DUT will decrease down to 0 volt The 3310F series electronic load will stop to sink current after load voltage is lower than load OFF voltage setting within the Config key The programmed load OFF voltage for model 3310F series load module is from 0 to load ON voltage
3110 DYN STA key and LED This Key is available in Constant Current and Constant Power mode only In
Constant Resistance and Constant Voltage mode there is no any function in this key and the LED is OFF the 3310F series load module will automatically adjust to static mode In Constant Current and Constant Power mode the Static or Dynamic mode is toggled by this key the LED will be lit at Dynamic mode
3111 Range key and LED Range AUTO II Key is for range setting if Range AUTO LED is OFF load will
setting to Range I or II in accordance with the actual current value When Range II LED will ON the current programming will setting to Range II
Note1 Coercion Range II only in CC Mode
Note 2CV or CP Mode fixed RANGE II work the way is as follows CV (CP) HIGH LEVEL is setting to RANGE II use LOW LEVEL setting
load on from front panel setting 3112 LEVEL key and LED In the dynamic mode of Constant Current mode there is no any effect to the 3310F
series load module although the LED can be indicated the High or Low level in the Static mode The only fact is switching the 3310F series load module from Dynamic load to Static load it can determine the load current is High or Low load current level
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 6 3310F Series Operation Manual PRODIGIT
In Static mode the LEVEL key is used to program the High or Low level load current in Constant Current mode the High or Low load resistance value in Constant Resistance mode the High or Low voltage value in Constant Voltage mode and the High or Low power value in Constant Power mode
3113 PRES ONOFF key and LED
At Preset OFF state the load input voltage is shown on the upper 5 digit Meter and load input current is shown on the middle 5 digit Meter the load input power is shown on the lower 5 digit Meter the engineering unit V A and W LED will be lit respectively At Preset ON state the PRES LED is ON the lower 5 digit Meter will be affected by the CC Dynamic CR CV and CP operating mode In Preset ON condition the 5 digit DCM indicates the setting load current which cab be from front panel setting or remote system setting
31131 In Constant Current mode
The HighLow level load current value can be preset at lower 5 digit LCD display the unit is A the A LED will be lit as well
31132 In Dynamic load mode
The ThighTlow parameters value of HighLow load current duration and RiseFall setting can be displayed on the lower 5 digit LCD display the unit is mS the mS LED will be lit as well
31133 In Constant Resistance mode
The HighLow level load resistance value can be preset on the lower 5 digit LCD display the engineering unit is Ω the Ω LED will be lit as well
31134 In Constant Voltage mode
The HighLow level load voltage value can be preset on the upper 5 digit LCD display the unit is V the V LED will be lit as well
31135 In Constant Power mode
The HighLow level load power value can be preset on the upper 5 digit LCD display the unit is W the W LED will be lit as well
3114 Limit key and LED In the 3310F series electronic load module the Limit key setting includes the GONG check of Digital Voltage meter UpperLower limit Current meter UpperLower limit and Watt meter UpperLower limit within the Limit key setting The setting sequence is shown below OFF DVM UpperLower limit DAM UpperLower limit DWM UpperLower limit GONG check ONOFF OF F Repeat
3115 DYN setting key and LED DYN setting key is setting Dynamic Mode parameter There are rise fall Thigh and Tlow parameters Setting the parameter is rotating the knob switch Press any key to escape the DYN parameters setting mode
31151 Press DYN setting key LED will ON 31152 Setting level High Period Middle 5 digit LCD display will show ldquoT-Hirdquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo 31153 Setting level Low period Middle 5 digit LCD display will show ldquoT-Lordquo Lower
5 digit LCD display will show setting valuethe unit is ldquomsrdquo
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 7
31154 Setting ries timeMiddle 5 digit LCD display will show rdquoRISErdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
31155 Setting fall timeMiddle 5 digit LCD display will show rdquoFALLrdquo Lower 5 digit LCD display will show setting valuethe unit is ldquomAμsrdquo or ldquoAuSrdquo
3116 Config key and LED The Config key setting includes the Sense AUTOON Load ONOFF voltage and Load Polarity The setting sequence is shown delow OFF SENSE AUTOON Load ONOFF Voltage Polarity setting OF F Repeat
NOTE CCCRCP MODE is controlled by Load ON voltage CV MODE is not Controlled by Load ON voltage 3117 SHORT key and LED
31171 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED
is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31172 Short test function parameter setting key There are 3 parameter for the SHORT test function The parameter as TIME
V-Hi and V-LoPress ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
31173 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 400mS to 9999mS step 200mS by clockwise rotate the setting knob
The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
31174 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
31175 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 6000 step 001V by rotating the setting knob
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in
the LIMIT function
31176 STARTSTOP Test key Press STARTSTOP key to start or stop the short test by SHORT test
setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 8 3310F Series Operation Manual PRODIGIT
was ldquoONrdquo before short test
The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3118 OCP key and LED 31181 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is
lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31182 OCP test function parameter setting key There are 4 parameter for the OCP test function The parameter as ISTAR
ISTEP ISTOP and Vth Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point)
When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
31183 ISTAR setting the start current point The LCD display shows ldquoOCPrdquo ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31184 ISTEP setting the increment step current point The LCD display shows ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31185 ISTOP setting the stop current point The LCD display shows ldquoOCPrdquo ldquoISTOPrdquo and 6000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
31186 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and 050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31187 STARTSTOP Test key Press STARTSTOP key to start or stop the OCP test by OCP test setting
parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test
The OCP test function for test the UUTrsquos over current protection The OCP
test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between A_Hi and A_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 9
3119 OPP key and LED 31191 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit
on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
31192 OPP test function parameter setting key There are 4 parameter for the OPP test function The parameter as PSTAR
PSTEP PSTOP and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR (start power point)
When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
31193 PSTAR setting the start power The LCD display shows ldquoOPPrdquo ldquoPSTARrdquo
and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31194 PSTEP setting the increment step power The LCD display shows ldquoOPPrdquo ldquoPSTEPrdquo and 000WI (initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31195 PSTOP setting the stop power The LCD display shows ldquoOPPrdquo ldquoPSTOPrdquo
and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
31196 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
050VI(initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
31197 STARTSTOP Test key Press STARTSTOP key to start or stop the OPP test by OPP test setting
parameter when OPP test function is enabled The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to
start the OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test
The OPP test function for test the UUTrsquos over power protection The OPP
test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage (V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display
3120 STARTSTOP key
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 10 3310F Series Operation Manual PRODIGIT
31201 Press STARTSTOP key to start or stop the short test by SHORTOCP amp OPP test setting parameter when SHORTOCP amp OPP test function is enabled
31202 The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test
31203 The SHORTOCP amp OPP test function for test the UUTrsquos short protection The SHORTOCP amp OPP test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL
Press any key to goes to normal mode of LCD display 3121 Knob and Knob key
Right Knob Setting digit can flash clockwise add setting value
Left Knob Setting digit can flash Anti-clockwise to decrease setting value
Knob Left key Setting digit can flash Left Knob key to push down setting value move left one-digit
Knob Right key Setting digit can flash Knob Right key to push down setting value move Right one-digit
Knob up key Setting digit can flash Knob UP KEY to push down add setting value
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 11
Knob down key Setting digit can flash Knob down key to push down to decrease setting value
NOTE ON CR MODE Right Knob and Knob UP KEY to push down decrease setting value
ON CR MODE LEFT Knob DOWN KEY to push down add setting value
3122 +- DC INPUT Terminal The positive and negative terminal of load input connector it should connect to the positive and ground output for a positive output power supply or the ground and negative output for a negative output power supply respectively Please take care of the voltage and current rating not to excess the maximum rating of each 3310F series load module Please check the polarity of DC input connection also before testing
Fig 3-2 3310F Series Electronic Load connection TYPE
3123 V-sense input terminal
To measure the specific voltage points through the V-sense input terminal refer Fig 3-2 for detail application information
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 12 3310F Series Operation Manual PRODIGIT
To Avoid High Voltage Hazard on 3312F and 3314F Electronic Load the recommended solution for 3312F and 3314F are illustrated below
31231 Do not use V-sense in High Voltage Load 3312F and 3314F if it is not necessary Because the purpose of V-sense is used to compensate the voltage drop in high load current condition However we also recommend using V-sense input (Remote sense) when calibrate the 3312F and 3314F Do not supply High Voltage source during connection between the High Voltage source and 3312F 3314F Electronic Load
31232 Always Turn-OFF the High Voltage source first during make wire
connection dis-connection or re-connection between the High Voltage source and 3312F 3314F Electronic Load
31233 The use property wire assembly to V-sense input terminal for the
3312F3314F is equipped with High Voltage Hazard safety proof to avoid high voltage shock
Fig 3-3 typical connection of 3310F series load module
3124 I-monitor
The I-monitor BNC is designed to monitor the Electronic loads input current or short current an isolated amplifier output 0V to 10V full scale signal indicates the zero to full scale current for each Electronic load module Please refer chapter 1 Table 1-1 for voltage current relationship of each 3310F series module
The I-monitor analog signal is proportional to the load current flow through the electronic load module I-monitor provides the load current waveform output to an oscilloscope to evaluate the voltage and current waveform of a power supply under test
The non-isolated I-monitor provides for power supply testing it is designed to the ground problem while connect I-monitor BNC and measure power supply output voltage to oscilloscope simultaneously because the two or more input BNC terminals in oscilloscope are not isolated
3310F serial I-monitor not isolated donlsquot use I-monitor with different channel to avoid common ground problem
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 13
Note 1 The CURRENT MONITER of this unit is NOT isolated Please be careful when you
connect to an oscilloscope Improper connections would cause damage 2 Monitor output volt 10V Output impedance 1K
Fig 3-4 An equivalent circuit in terms of the current monitor
NOTE Connection to an oscilloscope When you connect this product to an oscilloscope please be careful about the polarities of the probes of the oscilloscope to connect as shown in the Fig 3-5
Fig3-5 (Correct) Connections to an oscilloscope
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 14 3310F Series Operation Manual PRODIGIT
If you should connect in reverse connection as shown in Fig 3-6 large current would flow through the probe and the internal of the oscilloscope causing damage
Fig3-6(Wrong) Connections to an oscilloscope
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 15
3125 The withdraw handle When you want to remove the 3310F series load module out from the 3300F 3302F3305F mainframe for configuration reconfiguration purpose please follow the procedures which are listed below
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 16 3310F Series Operation Manual PRODIGIT
3126 Analog programming input
The Electronic Load has an analog programming BNC input on the rear panel of 3300F mainframe labeled CH1 CH2 CH3 and CH4 respectively The CC and CP modes can be programmed with a 0 to 10V analog signal (ac or ac + dc) connected to the analog programming BNC input The 0 to 10V Analog signal can program the 0 to full scale input range in the CC mode ( 0 to 6A range when load current setting is less than 6A or 0 to 60A range when load current setting is higher than 6A) or in the CP mode (0 to 300W) The analog programming signal can act alone or it can be summed with the programmed value via GPIB RS-232 or the front panel Fig 3-7 shows the analog programming signal (4 Vac 500Hz) is summed with the 24A programmed setting in CC mode of 3311F Load module
2mST
LOAD CURRENT
6V
4V
2V12A
24A
36A
ANALOG V
Fig 3-7 Analog programming load current in CC mode operation
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 17
3-2 Initial setting of 3310F series load module When you receive the 3310F series electronic load the load value initial setting after power ON is listed in table 3-1 to 3-5 for 3310F 3311F 3312F 3314F and 3315F respectively this is the factory or initial setting
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 120000 Ω I_Hi 30000 A CR L+Preset 120000 Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 15000 W CV L+Preset 60000 V
LIMIT
W_Lo 0000 W CP L+Preset 0000W SENSE Auto
CP H+Preset 0000W LD-ON 10 V T HI 0050 mS LD-OFF 0500 V T L0 0050 mS
CONFIG POLAR+LOAD
RISE 1250mAuS SHORT Disable
DYN FALL 1250mAuS OPP Disable
OCP Disable
Table 3-1 3310F initialize
Item Initial value Item Initial value CC L+Preset 00000 A V_Hi 60000 V CC H+Preset 00000 A V_Lo 0000 V CR H+Preset 60000 Ω I_Hi 60000 A CR L+Preset 60000Ω I_Lo 0000 A CV H+Preset 60000 V W_Hi 30000 W CV L+Preset 60000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 10 V
T HI 0050ms LD-OFF 0500 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 250mAus SHORT Disable
DYN FALL 250mAus OPP Disable OCP Disable
Table 3-2 3311F initialize
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 18 3310F Series Operation Manual PRODIGIT
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 25000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 1500 KΩ I_Hi 120000 A CR L+Preset 1500 KΩ I_Lo 00000A CV H+Preset 25000V W_Hi 30000 W CV L+Preset 25000 V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 20 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-3 3312F initialize
Item Initial value Item Initial value
CC L+Preset 00000 A V_Hi 50000 V CC H+Preset 00000 A V_Lo 000 V CR H+Preset 3000 KΩ I_Hi 120000 A CR L+Preset 3000 KΩ I_Lo 00000A CV H+Preset 50000V W_Hi 30000 W CV L+Preset 50000V
LIMIT
W_Lo 000 W CP L+Preset 0000W SENSE Auto CP H+Preset 0000W LD-ON 40 V
T HI 0050ms LD-OFF 050 V T L0 0050ms
CONFIG POLAR+LOAD
RISE 500mAus SHORT Disable
DYN FALL 500mAus OPP Disable OCP Disable
Table 3-4 3314F initialize
Table 3-5 3315F initialize
Item Initial value Item Initial value CC L+Preset 000000 A V_Hi 60000 V CC H+Preset 000000 A V_Lo 0000 V CR H+Preset 240KΩ I_Hi 150000 A CR L+Preset 240KΩ I_Lo 00000A CV H+Preset 60000V W_Hi 75000 W CV L+Preset 60000V
LIMIT
W_Lo 0000 W CP L+Preset 00000W SENSE Auto CP H+Preset 00000W LD-ON 10 V
T HI 0050ms LD-OFF 0500V T L0 0050ms
CONFIG POLAR+LOAD
RISE 625mAus SHORT Disable
DYN FALL 625mAus OPP Disable OCP Disable
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 19
3-3 Input terminal and wire consideration The five ways connect the input wires to the Electronic load the connection methods are made as follow
331 Plug connectors This is the most popular way to connect the input of electronic
load to the device under test It is recommended the load current is less than 20A in this connection for the current rating of the plug is rated to 20A The maximum wire gage AWG14 can be used in this application
332 Spade terminals The spade terminal provides a good contact to the binding post it
is recommended to use anytime The maximum wire gage 10 can be used in this application as show Fig3-8 and Table 3-6
333 Insert the wire into the input terminal This is the most convenient way to connect
the load input and DUT The maximum wire gage AWG14 can be used in this application
334 Both plug connectors and spade terminals
It is recommended to use when input current is greater than 20A or long lead wires 335 Both plug connectors and Insert the wire into the input terminal
It is recommended to use when input current is greater than 20A or long lead wires A major consideration in making input connection is the wire size The minimum wire size is required to prevent overheating and to maintain good regulation It is recommended that the wires should be large enough to limit the voltage drop to less than 05V per lead
Fig 3-8 Hook Terminal Y type Large size terminal connections
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 20 3310F Series Operation Manual PRODIGIT
Wire Size
AWG
Cross Section Area in mm2
Ampacity
Notes Ratings for AWG-sized wires derived from MIL-W-5088B Ratings for metric-sized wires derived from IEC Publication
22 20 18 16 14 12 10 8 6 4
075
1
15 25 4 6
10
50 833 10 154 135 16 312
25 40 32 55
40 75 63
100 135
Ampacity of aluminum wire is approximately 84 of that listed for copper wire When two or more wires are bundled together ampacity for each wire must be reduced to the following percentages 2 conductors 94 3 conductors 89 4 conductors 83 5 conductors 76 4 Maximum temperatures Ambient = 50deg C Conductor = 105deg C
Table 3-6 Stranded Copper Wire Ampere Capacity
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 3 - 21
3-4 Operating flow chart for each load module operation The following flow chart shows the typical load current level and status setting procedures of each load module within 3300F mainframe the load channel number 1 to 4 is from left to right compartment on 3300F mainframe respectively please skip Channel setting if single load mainframe 3302F is used The string between ____ in the flow chart is a RS-232C or GPIB programming commend Please follow the flow chart sequence to have a proper and effective load settings The load mode (CC CR CV or CP) should be set first where only Static mode is available for CR and CV mode both Static and Dynamic modes are available for CC and CP mode then choose High or Low load level and programming the load level for Static mode or programming the six parameters for Dynamic mode The Limit key set the GONG check upper and lower limit for DVM DAM and DWM respectively the system configure setting of V-sense control Load ON voltage and load OFF voltage is within the Limit key setting Others key (Load ONOFF Short ONOFF) can be controlled independently
START
CHANNEL 2 CHANNEL 1 CHANNEL 3 CHANNEL 4 NO NO NO
YES YES YESYES
NO
SET
CHAN 1
SET
CHAN 2
SET
CHAN 3SET
CHAN 4
CC
MODE
CRMODE MODE
CVNO NO NO
YES YES YES
SET
MODE CC
SET
MODE CR
SET
MODE CV
HIGH ORLOW LEVEL
HIGH
LOW LOW
HIGH
HIGH ORLOW LEVEL
LEV HIGH
SET SET
LEV LOW
SET
LEV HIGH
SET
LEV LOW
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
SET
MODE CP
CP
MODE
NO
YES
STA
DYN
SET
DYN ON
CURRHIGH NR2
CURRLOW NR2
RISE NR2
FALL NR2
PERDHIGH NR2
PERDLOW NR2
STA OR DYN
SET
DYN OFF
HIGH ORLOW LEVEL
HIGH
LOW
SETSET
LEV HIGH LEV LOW
PERDHIGH NR2
PERDLOW NR2
Limit
SETDVM LimitDAM LimitDWM Limit
Sense AutoOnVd-OnVd-Off
NO
YES
Fig 3-9 3310F series electronic load module load condition setting flow chart
SET
DVM Limit
DAM Limit
DWM Limit
Sense AutoOn
Vd-On
Vd-off
RANGE autor2
Istart
Istop
Istep
Pstart
Pstop
Pstep
Vth
Test ocpopp
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
3 - 22 3310F Series Operation Manual PRODIGIT
3-5 Protection features The 3310F series Electronic load modules include the following protection features 351 Over voltage 352 Over current 353 Over power 354 Over temperature 355 Reverse Polarity The Over voltage protection circuit is set at a predetermined voltage (63V for 3310F 3311F 3315F 263V for 3312F and 515V for 3314F) which can not be changed If the Over voltage circuit has tripped it Electronic load input turns OFF immediately to protect the abnormal condition When the Over voltage condition is occurred the Digital Current Meters seven segment LED display will indicate oVP CAUTION Never apply the AC line voltage or input voltage excised than 60V or it may cause damage of the electronic load module The 3310F series Electronic load can monitor the power dissipation of the load module when the power dissipation is greater than 105 of rate power input the load module will turn load to OFF state internally When the Over power condition is occurred the Digital Current Meters seven segment LED display will indicate oPP As soon as the temperature of 3310F series modules heat sink greater than 85 degree the Over temperature protection is occurred the Digital Current Meters seven segment LED display will indicate otP at same time the 3310F series Electronic Load will turn load to OFF state internally Please check the environment condition such as the ambient temperature and distance between the rear panel of Electronic load mainframe and wall is greater than 15cm The 3310F series Electronic load can reset the Over voltage Over correct Overpower and over temperature protection if the protection condition is removed and press the LOAD key to ON state The 3310F series electronic load conducts reverse current when the polarity of the DC source connection is incorrect The maximum reverse current is 30A for 3310F 60A for 3311F 10A for 3312F and 3314F If the reverse current excess the maximum reverse current it may cause damage of the 3310F series Electronic Load When the reverse condition the reverse current is displayed on the 5 digit Current Meter on the front panel and the 5 digit DCM indicates negative current reading whenever the reverse current is displayed on the current meter turn OFF power to the DC source and make the correct connections
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 1
Chapter 4 Applications This chapter describes the application information of 3310F series Electronic Load module
4-1 Local sense connections Fig 4-1 illustrates a typical set up with the electronic load connected to the DC power supply Local sensing is used in application where lead lengths are relatively short or where load regulation is not critical The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of DC INPUT Terminal automatically load leads should be bundled or tie-wrapped together to minimize inductance
Fig 4-1 Local voltage sense connections
4-2 Remote sense connections Fig 4-2 illustrates a typical set up with the electronic load connected for remote sense operation The remote V-sense BNC cables of the electronic load are connected to the output of the power supply Remote sensing compensates for the voltage drop in applications that require long lead lengths The 5 digit voltage Meter of 3310F series Electronic load measures the voltage of V-sense BNC input Terminal automatically so the high accuracy 5 digit voltage Meter can measure the specific points voltage of the power supplys output voltage Load leads should be bundled or tie wrapped together to minimize inductance
Fig 4-2 Remote voltage sense connections
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 2 3310F Series Operation Manual PRODIGIT
4-3 Constant Current mode application The Constant Current mode is very suitable to test the Load Regulation Cross Regulation Output Voltage and Dynamic Regulation of the power supply testing and test the Discharge Characteristic and Life cycle of the Battery testing
431 Static mode (Fig 4-3)
Major application 4311 Voltage source testing 4312 Power supply load regulation testing 4313 Battery discharge testing
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
VOLTAGE
SOURCE
ELECTRONIC LOAD CC MODE
DC- +
INPUT
- +DC
INPUT
IHIGH
ILOW
V
ILOAD CURRENT
LOAD CURRENT
SETTING
V
ILOAD CURRENT
DYNAMIC LOADCURRENT SETTING
Fig 4-3 constant CURRENT mode application
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 3
432 Dynamic mode
4321 Built-in Pulse generator (Fig 4-4) Major application 43211 Power supply load transient response testing 43212 Power recovery time testing 43213 Pulse load simulation 43214 Power component testing
Description The maximum RiseFall current slew rate or minimum Risefall time is the time required for the load input to change from 10 to 90 or from 90 to 10 of the programmed High to Low load level Rise slew rate = | Ilow - Ihigh | Ta ( Aus ) Fall slew rate = ( Ihigh - Ilow ) Tb ( Aus ) Rise time = Ta = | Ilow - Ihigh | Rise slew rate Fall time = Tb = ( Ihigh - Ilow ) Fall slew rate
4322 Analog programming input (Fig 4-4) Major application 43221 Simulate real load condition 43222 Battery discharge testing
Fig 4-4 Dynamic load current with independent programmed RiseFall slew rate
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 4 3310F Series Operation Manual PRODIGIT
4-4 Constant Voltage mode application Major application 441 Current source testing
The battery charger is a current source to charge current into a re-chargeable battery the CV mode of electronic load can be used to simulate the terminal voltage of re-chargeable battery it is designed to test the charge current from battery charger The Battery charger of notebook PC and Mobile phone is the most popular products for the current source in the real world user can use CV mode to set voltage say 60V (example) then read charge current from the current meter on the load next then set CV voltage to 5V (example) then read the charge current again this method is used to test the load regulation of a current source
442 Power supply current limit characteristic testing The current limit is a necessary function for a power supply the Fold-back current limit curve is very common for a switching power supply where the constant current limit curve is very popular for a lab power supply It is very difficult or impossible to find out the above current limit curve by CC or CR mode however it becomes easy by using CV mode User can set CV voltage record the output current then makes a series voltage and current to result a output current limit curve (Figure 4-5) of a power supply
- +DC
+
-
CURRENT
SOURCE
ELECTRONIC LOAD
CV MODE
INPUT
V
ILo
INPUT
VOLTAGE
CONSTANT VOLTAGE SETTING
A B C
A B C
V
I
CV SETTING
LOAD CURRENTPOWER SUPPLY CURRENTLIMIT TESTING
Fig 4-5 Constant Voltage mode application
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 5
4-5 Constant Resistance mode application Major application 451 Voltage source or Current source testing
452 Power supply power-up sequence
The constant current and constant resistance modes are used in conjunction for testing switching power supplies Caution must be exercised when using the CC mode in test set up for example A 5V50A output power supply can not deliver 50A over its start up range 0-5 volts In many cases the power supply short circuit or over current protection circuit will shut the power supply down What is occurring is that the power supply is trying to deliver 50A at 2V because the load tester is in the CC mode The power supply is designed not to do this As a result when testing a power supply the CR mode should be used to allow the power supply voltage and current to ramp up together After this has occurred the CC mode should be used to complete testing It has eliminated the need for manually switching from the CR to the CC mode with 3310F series Electronic Loads They can be programmed with proper current and slew rate in the CC mode which allows a power supply to reach its specified output condition in the CC load mode
CURRENT
SOURCE
+
-
ELECTRONIC LOLAD
CR MODE
ELECTRONIC LOLAD
CR MODE
VOLTAGE
SOURCE
V
I
INPUT
VOLTAGE
LOAD CURRENT
LOAD RESISTANCESETTING
- +DC
OUTPUT
Fig 4-6 Constant Resistance mode Application
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 6 3310F Series Operation Manual PRODIGIT
4-6 Constant Power mode application The Constant Power mode is designed for Batterys energy capacity evaluation and testing Primary or secondary battery is the power source for every portable electronics products such as notebook computer video camera etc The output voltage of battery will start to drop (Fig 4-7a) according to the output current and usage duration time (Fig 4-7b) however it should provide a stable power output regardless of output voltage (Fig 4-7c) therefore the energy capacity (output power x time) is one of the most important factor to evaluate a battery The CP mode of 3310F series electronic load is designed to test the above characteristics of a battery it can sink constant power load for a battery the load current will increase automatically in accordance to the output voltage drop of battery the load power will be the same to the load power setting of CP mode (Fig 4-7d) the 3310F series CP mode electronic load with time record can be used to evaluate the energy capacity or discharge life time of a battery Moreover the real power could be a dynamic loading condition the 3310F series CP mode can be operated in Dynamic power load as well setting the STADYN to DYN on the front panel or remote programming 3310F series can sink dynamic power waveform to test the dynamic characteristics of battery (Fig 4-7e)
V
T
(a) The output voltage of battery
Vo
A
T
(b) The output current of battery
Ao
W
T
(c) The output power of battery
Wo
Battery Plow Phigh
(e) Constant Power Mode (DYNAMIC)
Battery
(d) Constant Power Mode (STATIC)
Fig 4-7 CONSTANT POWER MODE APPLICATION
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 7
4-7 the connection of a multiple output power supply The following is a rule for a multiple output power supply connects to the 3310F series Electronic Loads Rule The potential of positive input (Red binding post) must be higher than the potential of negative input (Black binding post) of 3310F series Electronic load Here is an example of +5V -5V +12V and -12V four outputs power supply connected to a 3310F series electronic load
Fig 4-8 Connection between 3310F series plug-in load and multiple output power supply
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 8 3310F Series Operation Manual PRODIGIT
4-8 Parallel operation When the power or current rating is not enough on the electronic load module you can combine two or more electronic load modules as one unit by parallel two or more modules At this time the total load current and power is the sum of the two or more load modules also This connection can extend the electronic load module to a higher power and current rating
Note 1 The electronic load only may carry on the parallel operation under the fixed electric
current pattern 2 The electronic load do not use under series connection
Ι=Ι1+Ι2+Ι3+Ι4
Fig 4-9 3310F series plug-in module parallel operation
4-9 Zero-Volt loading application As shown in Fig 4-10 the Electronic load can be connected in series with a DC voltage source which output voltage greater than 2V (3310F3311F) or 3V (3312F) so that the device under test that are connected to the Electronic load can be operated down to a Zero- Volt condition the DC voltage
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 9
source provides the minimum 2V (3310F 3311F) or 3V (3312F)operating voltage required by the Electronic load This application is suitable for low voltage Battery cell with high discharge current testing
Fig 4-10 Zero-Volt loading connection
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 10 3310F Series Operation Manual PRODIGIT
4-10 Power Supply OCP testing 4101 There is a method for power supply Over Current Protection (OCP) testing
Power Supply OCP testing using CC mode method (active by memory recall operation only)
4102 OCP test function EnableDisable Key Press ldquo OCPrdquo key to enable the OCP test function and the indicator LED is lit on The LCD display show ldquoOCPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4103 There are 4 parameter for the OCP test function The parameter as ISTAR ISTEP
ISTOP and Vth
Press ldquoOCPrdquo key again to set OCP test parameter ISTAR(start current point) When OCP test function is enabled Press OCP key again to next parameter by the sequence of ISTEP ISTOP Vth and disable press another key also can to exit the setting and save the setting The OCP test parameter description as following
41031 Istar setting the start current point The LCD display shows ldquoOCPrdquo
ldquoISTARrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41032 Istep setting the increment step current point The LCD display shows
ldquoOCPrdquo ldquoISTEPrdquo and 0000AI(initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41033 Istop setting the stop current point The LCD display shows ldquoOCPrdquo
ldquoISTOPrdquo and 60000AI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000A to the full scale of the CC mode specification The setting is by rotating the setting knob
41034 Vth Setting threshold voltage The LCD display shows ldquoOCPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 0000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4104 STARTSTOP Test key
Press STARTSTOP key to start or stop the OCP test by OCP test setting parameter when OCP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the OCP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OCP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OCP test The OCP test function for test the UUTrsquos over current protection The OCP test will start sink current from I-START to increase ISTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OCP trip point is between I_Hi and I_Lo limitation then middle 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 11
4105 Remote control OCP EX
REMOTE (Set Remote) TCONFIG OCP (Set OCP test) OCPSTART 3 (Set start load current 3A) OCPSTEP 1 (Set step load current 1A) OCPSTOP 5 (Set stop load current 5A) VTH 06 (Set OCP VTH 06V) IL 0 (Set current low limit 0A) IH 5 (Set current high limit 5A) NGENABLE ON (Set NG Enable ON) START (Start OCP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OCP (Ask OCP current value) STOP (Stop OCP testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 12 3310F Series Operation Manual PRODIGIT
4-11 Power Supply OPP testing 4111 There is a method for power supply Over Power Protection (OPP) testing
Power Supply OPP testing using CC mode method (active by memory recall operation only)
4112 OPP test function EnableDisable Key Press ldquo OPPrdquo key to enable the OPP test function and the indicator LED is lit on The LCD display show ldquoOPPrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4113 OPP test function parameter setting key
There are 4 parameter for the OPP test function The parameter as Pstar Pstep Pstop and Vth Press ldquoOPPrdquo key again to set OPP test parameter PSTAR(start power point) When OPP test function is enabled Press OPP key again to next parameter by the sequence of PSTEP PSTOP Vth and disable press another key also can to exit the setting and save the setting The OPP test parameter description as following
41131 Pstar setting the start power point The LCD display shows ldquoOPPrdquo
ldquoPSTARrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41132 Pstep setting the increment step power The LCD display shows ldquoOPPrdquo
ldquoPSTEPrdquo and 000WI(initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41133 Pstop setting the stop power point The LCD display shows ldquoOPPrdquo
ldquoPSTOPrdquo and 30000WI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000W to the full scale of the CP mode specification The setting is by rotating the setting knob
41134 Vth Setting threshold voltage The LCD display shows ldquoOPPrdquo ldquoVthrdquo and
0600VI(3311F initial) from upper to lower 5 digits LCD display the setting range is 000V to the full scale of the Voltage specification The setting is by rotating the setting knob
4114 STARTSTOP Test key
Press STARTSTOP key to start or stop the OPP test by OPP test setting parameter when OPP test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the
OPP test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the OPP test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before OPP test The OPP test function for test the UUTrsquos over power protection The OPP test will start sink current from PSTART to increase PSTEP current until the UUTrsquos output voltage drop-out lower than the threshold voltage(V-th setting) and the OPP trip point is between P_Hi and P_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
PRODIGIT 3310F Series Operation Manual 4 - 13
4115 Remote control OPP EX
REMOTE (Set Remote) TCONFIG OPP (Set OCP test) OPPSTART 3 (Set start load watt 3W) OPPSTEP 1 (Set step load watt 1W) OPPSTOP 5 (Set stop load watt 5W) VTH 06 (Set OPP VTH 06V) WL 0 (Set watt low limit 0W) WH 5 (Set watt high limit 5W) NGENABLE ON (Set NG Enable ON) START (Start OPP testing) TESTING (Ask Testing 1Testing0Testing End) NG (Ask PASSFAIL0PASS1FAIL) OPP (Ask OPP watt value) STOP (Stop OPP testing)
4-12 Power Supply SHORT testing 4121 The low short resistance is implemented by drives the Power MOSFET to the
maximum rated load current at SHORT ON mode and Load ON status
4122 Short test function EnableDisable Key Press ldquo SHORTrdquo key to enable the short test function and the indicator LED is lit on The LCD display show ldquoSHORTrdquo on upper 5 digits LCD display shows ldquoPRESSrdquo on middle 5 digits LCD display and shows ldquoSTARTrdquo on lower 5 digits LCD display
4123 Short test function parameter setting key
There are 3 parameter for the SHORT test function The parameter as TIME V-Hi and V-Lo Press ldquoSHORTrdquo key again to set short test time when SHORT test function is enabled Press SHORT key again to next parameter by the sequence of TIME V-Hi V-Lo and disable press another key to exit the setting and save the setting The short test parameter description as following
41231 TIME setting the short test time The LCD display shows ldquoSHORTrdquo ldquoTIMErdquo
and CONTI(initial) from upper to lower 5 digits LCD display the setting range is ldquoCONTIrdquo means continue 100mS to 10000mS step 100mS by clockwise rotate the setting knob The short test will be no time limitation when setting to CONTI until press ldquoSTARTSTOPrdquo key to stop the short test
41232 V-Hi Short test voltage check upper limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Hirdquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
41233 V-Lo Short test voltage check lower limitation setting The LCD display
shows ldquoSHORTrdquo ldquoV-Lordquo and 000V(initial) from upper to lower 5 digits the V-Hi setting range from 000 to 60000 step 0001V by rotating the setting knob
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)
4 - 14 3310F Series Operation Manual PRODIGIT
Note The V-Hi and V-Lo parameter is difference with the V-Hi and V-Lo in the LIMIT function
4124 STARTSTOP Test key
Press STARTSTOP key to start or stop the short test by SHORT test setting parameter when SHORT test function is enabled
The Load will goes to ldquoONrdquo automatically when press STARTSTOP key to start the short test and the Load will goes to ldquoOFFrdquo automatically when press STARTSTOP key to stop the short test The Load will stay to ldquoONrdquo If load was ldquoONrdquo before short test The SHORT test function for test the UUTrsquos short protection The SHORT test will sink loadrsquos full scale current(3311F 60A) until to fit in with the test condition and the UUTrsquos drop voltage is between V_Hi and V_Lo limitation then lower 5 digits LCD display will shows PASS otherwise shows FAIL Press any key to goes to normal mode of LCD display
4125 Remote control SHORT
EX REMOTE ( )Set Remote TCONFIG SHORT (Set SHORT test) STIME 1 ( )Set short time 1ms START (Start ) SHORT testing TESTING (Ask Testing 1Testing0Testing End) STOP (Stop SHORT testing)