IS12 Dealer Info Issue 1 - Chicago Marine Electronics

IS12Instruments

A L W A Y S A T T H E F O R E F R O N T O F T E C H N O L O G Y

D E A L E RINFORMATION

Simrad Ltd (Margate)Star Lane, Margate, Kent CT9 4NP, UK

Telephone +44 (0) 1843 290290Facsimile +44 (0) 1843 290471

E-Mail : [email protected]

© 2002 Simrad Ltd

Contents

Introduction 3

IS12 Speed Instrument 4

IS12 Depth Instrument 5

IS12 Combi Instrument 6

IS12 Wind Instrument 7

IS12 Compass Instrument 8

IS12 Data Instrument 9

IS12 Mega Instrument 10

IS12 Remote/Alarm 11

Speed Transducer 12

Depth Transducer 12

Wind Transducer 12

Order Codes & Accessories 13

Suggested Systems 14

Frequently Asked Questions 15

NMEA Information 17

Calibration 18

Fault Finding 19

Issue 1.0 22/1/2002

3A L W A Y S A T T H E F O R E F R O N T O F T E C H N O L O G Y

IS12 NetworkThe IS12 system is built around a high speed bus net-working system that allows instruments to be easily inter-connected and share data - all units are interconnectedand powered using a standard single cable.

Additional instruments can be added to the system to actas repeaters, for example at the chart table of a sailboat orthe flybridge of a powerboat. Thus, as shown in theexample on the right, the Mega and Data Repeater instru-ments repeat the information from the main instruments.

IS12 Features• Low cost• Intuitive operation• Easy to access functions• Front or Rear Mounting of displays -

• New high speed network• High quality, high contrast LCD• Large digits (40mm on Speed and Depth displays)• 13 segment digits - easier to read• Wide viewing angle• Backlit display & keypad• Bright, even backlighting• Remote control option• Easy to install• Simple “Daisychain” interconnection -

• Clearly labelled transducer terminals -

• Robust construction • Simrad design

IS12 Introduction

SPEED/LOG

REMOTE

DEPTH

DATA WIND

WIND Tx

The Simrad IS12 System is a flexible modular series of instruments with large, clear displays, easy tooperate functions and robust, weatherproof construction. Whether as a stand alone instrument, oras part of a networked navigation system, IS12 will offer superb performance.

12v DC In

4

IS12 Speed Instrument


The IS12 Speed/Log features a large, clear display with 3x 40mm high 13 segment digits. It can be fitted as astandalone instrument, or part of an IS12 network.

Functions• Boat Speed• Distance Log• Trip Log• Race Start timer• Water Temperature ºC/ºF• Selectable units - Kts, Km/h, MPH• Remote controllable

Cruise PackThis unit is available as part of a Cruise Pack togetherwith the Depth and Wind units, plus all necessary trans-ducers and cabling.

Transducer The IS12 Speed System is supplied complete with a stan-dard Airmar plastic through hull Speed transducer withaortic sea valve.

Rear Transducer Terminals

Part NumbersSystem PackIS12 Speed:S Instrument, Transducer, 2m Power Cable,

0.3m Data Cable, Network Terminator,Instrument Cover

Display only (for non-standard transducer installations)IS12 Speed: I Speed Instrument, 2m Power Cable,

0.3m Data Cable, Network Terminator,Instrument Cover

Cruise PackIS12 Cruise:S Speed / Depth / Wind Instruments,

transducers, power cable, Instrument Covers, 2 x 0.3m & 1 x 30m Data Cables

Spare TransducerIS12TS Plastic through hull Speed, 10M CableLSP3:SS Replacement paddlewheel impellor

SpecificationSupply Voltage 12v (9-16v) DCCurrent Consumption Light Off - 40mA

Light On - 60mASpeed Range 0-60 Kts, mph, KmhMax Speed Resolution 0.1 Kts, mph, KmhSea Temperature 0-37ºC (32-99ºF)Max units per system 32Ambient Temp Range -10ºC to +55ºC (14ºF to 140ºF)

Dimensions

LIGHT TIMER RESET INFO

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

125m

m (

4.9i

n)

WH WhiteGN GreenRD RedBK BlackBR Brown


The IS12 Depthsounder features a large, clear displaywith 3 x 40mm high 13 segment digits. It can be fitted asa standalone instrument, or part of an IS12 network.

Functions• Water Depth• Shallow & Deep alarms• Keel or Waterline offset• Selectable units - Feet / Metres• Transducer can be disabled• Remote controllable

Cruise PackThis unit is available as part of a Cruise Pack togetherwith the Speed/Log and Wind units, plus all necessarytransducers and cabling.


Transducer The IS12 Depth System is supplied complete with a stan-dard 200kHz Airmar plastic through hull Depth transduc-er. For installations on boats with a fishfinder orechosounder running at a similar frequency, the transduc-er can be disabled.

Part NumbersSystem PackIS12 Depth:S Instrument, Transducer, 2m Power Cable

Instrument Cover

Display only (for non-standard transducer installations)IS12 Depth: I Instrument, 2m Power Cable, Instrument

Cover


transducers, power cable, Instrument Covers, 2 x 0.3m & 1 x 30m Data Cables

Spare TransducerIS12TD Plastic through hull Depth, 10M Cable


Light On - 60mATransducer Frequency 200kHzSounding Range 0.6 - 100m (2 - 328ftMax Resolution 0.1m / 1ftMax units per system 32Ambient Temp Range -10ºC to +55ºC (14ºF to 140ºF)

Dimensions

IS12 Depth Instrument

LIGHT SHALL DEEP INFO

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

BK Black+screen

BU Blue

6

IS12 Combi Instrument


The IS12 Combi offers all the features and functions of theSpeed/Log and Depth instruments in one unit with aclear, two line display. It can be fitted as a standaloneinstrument, or part of an IS12 network.

Functions• Boat Speed• Distance Log• Trip Log• Race Timer• Water Temperature ºC/ºF• Water Depth• Shallow & Deep alarms• Keel or Waterline offset• Selectable units• Depth transducer can be disabled• Remote controllable


TransducersThe IS12 Combi System is supplied complete with stan-dard Airmar plastic through hull Depth (200kHz) andSpeed (with aortic sea valve) transducers. For installa-tions on boats with a fishfinder or echosounder running ata similar frequency, the depth transducer can be disabled.

Part NumbersSystem PackIS12 Combi:S Instrument, Transducers, 2m Power Cable

Instrument Cover

Display only (for non-standard transducer installations)IS12 Combi: I Instrument, 2m Power Cable, Instrument

Cover

Spare TransducersIS12TD Plastic through hull Depth, 10M CableIS12TS Plastic through hull Speed, 10M CableLSP3:SS Replacement paddlewheel impellor


Light On - 60mATransducer Frequency 200kHzSounding Range 0.6 - 100m (2 - 327ft)Max Depth Resolution 0.1m / 1ftSpeed Range 0-60 Kts, mph, KmhMax Speed Resolution 0.1 Kts, mph, KmhSea Temperature 0-37ºC (32-99ºF)Max units per system 32Ambient Temp Range -10ºC to +55ºC (14ºF to 140ºF)

Dimensions

LIGHT ALARMTIMER

UPPERINFO

LOWERINFO

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

125m

m (

4.9i

n)

Speed -WH WhiteGN GreenRD RedBK BlackBR Brown

Depth -BK Black

+screenBU Blue

Depth transducer dimensionsas Speed skin fitting


The IS12 Wind is an Analogue wind display featuring alarge LCD that can display wind speed and angle.

Functions• Apparent Wind Angle / Speed• True Wind data (if IS12 Speed or Combi present)• High Wind alarm• Selectable units - Kts, M/S, MPH, BFT• Remote controllable

Cruise PackThis unit is available as part of a Cruise Pack togetherwith the Speed and Depth units, plus all necessary trans-ducers and cabling.

True Wind DataTrue wind angle and speed data can be displayed if anIS12 Speed Log or Combi instrument is in the system.

Digital Close Hauled DisplayThe Wind Angle can be displayed on the digital displayby pressing the INFO key -

The graphic on the left of the display indicates the direc-tion of the wind. When sailing close hauled, the digitsshow the wind angle measured from the bow of the boat.When running, the digits show the wind angle measured

from the stern, indicating how close the boat is to gybing.If boat speed data is being received, pressing TRUE/APPwill switch the digital display between apparent and truewind angle.

Transducer ConnectionAs the IS12 wind transducer is an active unit, it does notrely on an instrument display to process the data.Therefore it can be plugged into any spare data port on thenetwork, or directly into the back of the Wind display.Note that the transducer is terminated - no additional ter-mination is required and if adding to an existing systemwith a Network Terminator fitted, this should be removed.

Transducer The IS12 Wind System is supplied complete with a robust,lightweight active masthead transducer.

Part NumbersSystem PackIS12 Wind:S Instrument, Transducer with mounting

bracket, 2m Power Cable, 30m Mast Cable, Instrument Cover

Display only (repeater)IS12 Wind: R Instrument, Instrument Cover


transducers, power cable, Instrument Cover, 2 x 0.3m & 1 x 30m Data Cables

Spare TransducerIS12TW Wind transducer with mounting bracket

and 30M cable

SpecificationSupply Voltage 12v (9-16v) DCCurrent Consumption Light Off - 40mA On - 90mAWind Speed Range 0-99.9 Kts, m/s, Km/h (0-12 BFT)Max Resolution 1ºMax units per system 32Ambient Temp Range -10ºC to +55ºC (14ºF to 140ºF)

Dimensions

IS12 Wind Instrument

LIGHT WINDALARM

TRUEAPP INFO

Running, starboard tackRunning, port tack

Close hauled, port tack Close hauled, starboard tack

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

440mm (17.3in)

180m

m (

7.0i

n)

80mm (3.2in)

43m

m (

1.7i

n)

The IS12 Compass is an Analogue compass display fea-turing a large LCD that can display magnetic and trueheading.

Functions• Compass lock mode• Magnetic and True display• Remote controllable

Compass DisplayThe IS12 Compass features both analogue and digital dis-play of the current boat heading. When the instrument isswitched on, the display will show MAGº (magnetic bear-ing) or TRUº (true bearing), depending on which settinghas been selected in the Calibration menu. After 1 secondthe display will change to show the heading.

Compass Lock Mode

This allows the current heading to be set as the course tosteer. Steer to the required heading and press LOCK. Thedisplay will show LOCK for one second, and the needlewill swing to point straight ahead. The digital displayshows the locked heading and the pointer will show thedeviation from the locked heading using the inner scale,which has a maximum deviation of 20º

8

IS12 Compass Instrument


Transducer ConnectionAs the IS12 compass transducer is an active unit, it doesnot rely on an instrument display to process the data.Therefore it can be plugged into any spare data port on thenetwork, or directly into the back of the Compass display.

Transducer The IS12 Compass System is supplied complete with acompact fluxgate compass transducer.

Part NumbersSystem PackIS12 Compass:S Instrument, Transducer with 5m

cable, 2m Power Cable, Network Terminator, Instrument Cover

Display only (repeater)IS12 Compass: R Instrument, Instrument Cover

Spare TransducerIS12TC Compass transducer with 5m

cable

SpecificationSupply Voltage 12v (9-16v) DCCurrent Consumption Light Off - 40mA On - 90mAMax Resolution 1ºMax units per system 32Ambient Temp Range -10ºC to +55ºC (14ºF to 140ºF)

NMEA183 InputThe Compass Instrument also has an NMEA183 input toallow the instrument to read Compass info as a standalone repeater. When used with the IS12 Compass trans-ducer the compass info can be displayed and outputted asNMEA183 on both the Mega and Data instruments.

Dimensions

LIGHT LOCK

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

66 mm(2.6 in)

94 mm

(3.7 in)46 m

m(1.8 in)


The IS12 Data is a multifunction repeater featuring alarge, two line display, four customisable Pages and anNMEA output. The Data instrument can repeat all IS12data available on the network.

Functions• Multifunction data display• Repeats all data available on system• Select upper or lower Information• 4 Customisable page displays• NMEA0183 output• Remote controllable

Rear Terminals

NMEA DataThe IS Data can output the following NMEA data sen-tences (NMEA0183) -

DBT Depth below transducerDPT Depth below transducer & offsetHDG Magnetic Heading inc Deviation &

VariationMTW Water Temperature, ºCMWV Wind Speed & AngleVHW Boat Speed & Magnetic Heading

NOTE The above NMEA sentences will only be out-putted if therelevant master unit is present on the IS12 system, i.e theWind Transducer must be present for the Wind sentencesto be generated.

Part NumbersDisplayIS12 Data: R Instrument, 2m Power Cable, Instrument

Cover, Network Terminator


Light On - 60mANMEA Output DBT, DPT, HDG, MTW, MWV,

VHWMax units per system 32Ambient Temp Range -10ºC to +55ºC (14ºF to 140ºF)

Dimensions

IS12 Data Instrument

LIGHT PAGE UPPERINFO

LOWERINFO

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

10

IS12 Mega Instrument


The IS12 Mega is a large digit multifinction repeaterwhich is able to repeat virtually all data available on theIS12 network. Featuring an NMEA output and input, it isalso able to repeat incoming navigation and instrumentdata from an NMEA source. It can form part of an IS12instrument system, or be used as a stand alone repeater.

Functions• Multifunction data repeater• Repeats all data available on system• Large digit display• NMEA0183 input• NMEA0183 output• As a stand alone repeater, or as part of an IS12 network• Remote controllable

Rear Terminals

Displayable dataBoat Speed, Log, Trip, Water Temperature, Avg Speed,Max Speed, Race Start Timer, Depth, Shallow AlarmSetting, Deep Alarm Setting, AWA, AWS, TWA, TWS,TWD, VMG, High Wind Alarm Setting, Magnetic Bearing,True Bearing, COG, SOG, BTW, XTE

NMEA Sentences received/transmittedThe Mega has two modes of operation - Mode 1 is forwhen the Mega is part of an IS12 instrument system andwill display IS12 data present on the system, processednav data via the IS12 network and incoming nav data viaNMEA0183. Incoming NMEA instrument data (i.e speed,depth, wind etc) cannot be displayed. Mode 2 is for whenthe Mega is to be used as a standalone NMEA repeaterand will display NMEA0183 instrument and nav data -only the NMEA terminals are used to supply data - thenetwork ports only supply power to the display. No datais received or transmitted to any IS12 units connected tothe Mega via the network ports.

Mode 1 (IS12 Mode)Received DataVTG Course over ground (mag & true),

speed over groundRMA Speed & course over groundRMB Cross track errorRMC Speed & course over groundBWR Bearing to waypoint (rhumb line)BWC Bearing to waypoint (great circle)GLL Geographic position (Lat/Long)XTE Cross track error

Transmitted DataVHW Boat speed & heading (mag & true)MTW Water temperatureDBT Water depthDPT Water depth inc. offsetMWV Apparent wind angle & speedHDG Heading (mag & true)

Mode 2 (NMEA Repeater Mode)Received DataVHW Boat speed & heading (mag & true)MTW Water temperatureDPT Water depth inc. offsetMWV Apparent & true wind angle & speedHDG Heading (mag & true)VTG Course over ground (mag & true),

speed over groundVWR Apparent wind angle & speedRMA Speed & course over groundRMB Cross track errorRMC Speed & course over groundBWR Bearing to waypoint (rhumb line)BWC Bearing to waypoint (great circle)GLL Geographic position (Lat/Long)XTE Cross track error

Transmitted DataIn Mode 2, all NMEA data received is re-transmitted to NMEAOut.

LIGHT INFO


A remote control unit that can operate all IS12 instru-ments and features a loud alarm repeater and a backlitkeypad. The keypad mimics the key layout of all the IS12instruments. For multi station installations, remote con-trol facility can be disabled on individual instruments.

Functions• Controls all IS12 instruments• Alarm repeater• Dash mount or hand held

InstallationThe cable can either be routed behind the dash for a fixedmount installation, or exposed for handheld use -

Part NumbersRemoteIS12 Remote: F Remote Control/Alarm with 2m cable,

dash mount clip

Dimensions

IS12 Remote Control/Alarm

Concealed Cable (Fixed Mount) Exposed Cable (Hand Held)

17mm(0.67in)

55mm (2.15in)

110m

m (

4.3i

n)

CTRLLarge Digit Display (Speed, Depth, Mega)

Analogue Display (Wind, Compass)

Two Line Display (Combi, Data)

Press the button to selectthe instrument -the display will

flash “CTRL”

12

IS12 Transducers


Speed• Standard Airmar speed transducer• Plastic housing• 10m cable• Incorporates aortic sea valve• Compatible with Simrad Egersund IS15 range of speed

transducers

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

125m

m (

4.9i

n)

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

Depth• Standard Airmar 200kHz transducer• Plastic housing• 10m cable• Compatible with Simrad Egersund IS15 range of depth

transducers

WindA robust, lightweight active masthead transducer with arevolutionary quick release mounting system. Unlikeother masthead transducers, the mechanical and electricalconnections are separate which dramatically improvesreliability and electrical integrity under the demandingconditions masthead transducers experience.

• Robust• Lightweight• Lightweight 30m mast cable• Easy to install• Masthead unit is easy to attach using simple

quick-release system -

Pull back

Lift

1

2

440mm (17.3in)

180m

m (

7.0i

n)

80mm (3.2in)

43m

m (

1.7i

n)

Windvane shaft is“keyed” - ensure it iscorrectly orientated

when fitting

Windvane is lockedin place when thecounterweight is

screwed in. Do notovertighten

Counterweightlocks under flange

Windcups are secured bya grub screw. The hexkey supplied for this isalso used to tighten the

vane counterweight


Systems PacksIS12 Speed:S Instrument + transducer +2m power

cable + 0.3m data cable + coverIS12 Depth:S Instrument + transducer +2m power

cable + network terminator + coverIS12 Combi:S Combined two line Speed & Depth

Instrument Display + transducers+ 2m power cable + cover

IS12 Wind:S Instrument + transducer + 30m mastcable + 2m power cable + cover

Cruise PackIS12 Cruise:S Separate Speed/Depth/Wind Instruments

complete with transducers + power and data cables + covers

RepeatersIS12 Data:R Two line Instrument Repeater NMEA

OUT + network terminator + 5m data cable + cover

IS12 Wind:R Analogue Wind Instrument Repeater+ 5m data cable + cover

NOTE---No power cables are supplied with Repeaters

Instrument Heads onlyIS12 Depth:I Depth Instrument + 2m power cable

+ cover

IS12 Speed:I Speed Instrument + 2m power cable + 0.3m data cable + cover

IS12 Combi:I Combined two line Speed & Depth Instrument Display + 2m power cable+ cover

Remote ControlIS12 Remote: F Remote Control/Alarm with 5m cable

+ dash mount clip

TransducersIS12 TW Wind transducer with mounting bracket

and 30m mast cable

IS12 TC Compass transducer

IS12TS Through hull Speed transducer plastic with 10m Cable

IS12TD Through hull Depth transducer plastic with 10m Cable

Power CableSPC2M 2m Power Cable

Data CablesSDC0.3M 0.3m Data CableSDC02M 02m Data CableSDC05M 05m Data CableSDC10M 10m Data CableSDC30M 30m Data Cable

Misc AccessoriesSDJ Three Way Cable JoinerSTP Network TerminatorPIC Protective instrument cover

IS12 Order Codes & Accessories

14

IS12 Suggested Systems


The following systems are suggested installations for typi-cal sail and power boat applications, both single and dualstation. Additional Data & Mega repeaters can be addedup to a maximum of 32 instruments per system.


How do I reset the system?Insome cases you may want to reset the instrument to thefactory settings. To do this, power the instrument down,press and hold the two outer keys and turn the power on.Note that this does not reset the Distance Log on theSpeed and Combi Instruments.

What is the point of the Hand Remote disable function?

Imagine you have a dual station installation, for exampleon a flybridge power boat, with a remote control to oper-ate the instruments on the inside steering position. Here,the instruments are often fitted on an overhead console,and/or would be rear mounted, making the remote con-trol necessary. However, the Remote would also controlthe instruments on the flybridge, which would be confus-ing and unnecessary - you only want to control those onthe inside. So the solution is to disable the remote controlfacility on the flybridge instruments.

How do I disable/re-enable Remote Control?On the instrument in question, enter calibration mode,press or until the display shows CTRL and press .

The display will show the current setting - ON for remotecontrol enabled or OFF for remote control disabled. Thesetting can be changed using the or keys. To set theselected mode, press . The display will then return tothe main calibration menu.

Press to exit to the main calibration menu at any point.

Any changes will only affect that specific instrument.

How do I re-enable Remote Control functionality on arear mounted instrument?If you accidentally disable the remote control facility on arear mounted instrument this is a problem. How do youcontrol the instrument - you can’t get at the keys, andyou’ve told the instrument to ignore the Remote Control.

If you’ve done this, the following procedure will allowRemote Control access to all instruments on the network -With the power to the system off, press and hold the key on the Remote Control while turning the power on.The Remote Control will now be able to access all instru-ments on the network temporarily (if the system is thenswitched off and on again without changing anything, theinstrument will revert to its previous settings). Select theinstrument which has been incorrectly disabled using theRemote Control and re-enable the remote control facilitythrough the calibration menu.

Why can’t I enable shop mode using the Remote?The remote control can control virtually any function thatyou can control on the instrument, because when youpress a key on the Remote, it sends a data bit down thenetwork which is interpreted by the receiving instrumentas a press of the respective key and acts on it. However,what it can’t do is tell the difference between a quickpress and a long press, and you have to press and holdthe key for at least two seconds to enter and exit ShopMode on the instrument, to stop users accidentally goinginto Shop Mode when on their boat.

Since you can only access Shop Mode through the instru-ment’s own keypad, if you’re making a shop display withrear mounted instruments, you should set them up inshop Mode before you fix them to the panel!

When do I need to use a terminator?IS12 instruments intercommunicate across a network bus,and like any bus system, it needs to be terminated at both“ends”. The power cable contains a terminator at one end(which is why you should always use an IS12 powercable). The other end is either terminated by the WindTransducer (which has one), or by a plug in Terminatorsupplied with some of the instruments. If the system issplit using a three-way joiner, plug the terminator into thelast instrument at the end of the longest spur. A systemshould never include more than two terminators, including thepower cable and the wind transducer.

When you don’t need one -1) If you only have one instrument in the system, becauseit has nothing to communicate with.2) Any system with a Wind instrument - the Wind trans-ducer has a terminator inbuilt.3) Any system that already has a plug in terminator fitted.Don’t fit more than one!

When you need one -A system of more than one instrument which includes acable run of more than 5m and no wind transducer.

IS12 FAQs

Main Steering Station

Flybridge

Rear mounted instruments - remote control required.Remote control enabled

Front mounted instruments - no remote control requiredRemote control disabled

16

IS12 FAQs


What happens to the Depth sounder if it crosses tur-bulence?Normally the depth displayed will be extremely accurate,however there are certain circumstances where the accura-cy of the signal can be adversely affected. If the boat iscrossing the wake of a large vessel, the turbulence causedby the vessel’s passage will create air bubbles which couldinterfere with the depth sounder signal -

As this is due to the quality of the water, the depth instru-ment cannot compensate for this, but will attempt to re-acquire an accurate signal.If this occurs, the depth pulse will likely be reflected offthe air bubbles rather than the sea bed, in which case thedepth will appear to drop rapidly to as little as 0.6m,which may cause the shallow alarm to sound (if it hasbeen set). However, after several seconds the depthinstrument will work out that the signals it is receivingare not accurate.

Upon loss of signal, the depth instrument will display thefollowing sequence, indicating the depth displayed is notcurrent -

1. The last depth reading will be held for approx 15 secs2. The display will then flash the last depth reading for approximately one minute3. The display will then show dashes -

The display will show dashes until re-acquisition of signal.

What are the pin outs and core colours of an IS12 datacable?

Red 12v+Black 0vBlue Data “High”Yellow Data “Low”

What do the coloured ends of the IS12 cable plugsmean?

Red - TerminatedYellow - Power & Data, Unterminated

Why do the Wind and Compass transducers plug intothe network ports, while the Speed and Depth trans-ducers plug into terminals?The Speed and Depth transducers can be described as“passive” transducers - they merely collect the raw data,but rely on an instrument head to process that data into auseable format. This is why they plug directly into theback of the Speed, Depth or Combi instruments. Windand Compass transducers are “active” transducers - theyhave internal processing circuitry and transmit processeddata directly onto the network. They therefore do not relyon a display head to function, and so can be plugged inanywhere on the network

What is the maximum length of cable I can have?The total length of cable in the system should be no morethan 100m, which should be more than adequate for anyapplications requiring IS12.

What is the maximum number of units I can install ina single system?The manuals state 32 display heads, but the actual figureis 40 “nodes”. A node is a display head or an active trans-ducer, eg Wind or Compass (see previous question).

I want to fit repeaters. What are my options?For a large digit repeater (like the Speed and Depthinstruments), choose the Mega (IS12 Mega:R). If youwant a multi-line repeater (like the Combi), which candisplay longer format data like Lat & Long, choose theData (IS12 Data:R). If you want an analogue Wind orCompass repeater, order an IS12 Wind:R or IS12Compass:R respectively. You can fit as many of theserepeaters as needed (up to the total system maximumstated above).

Don’t forget to fit a Network Terminator if you need one.

Depth pulse is reflected by the airbubbles, not the sea bed

DEPTH

LIGHT INFO

DEPTH

SHALL DEEP

M

17

IS12


How reliable is the Wind transducer?The IS12 Wind transducer evolved from the very success-ful Corus and IS15 Wind transducer. We have made itsmaller, lighter and easier to fit. The mounting bracket isextremely sturdy, and as the electrical and mechanicalconnections between the bracket and the wand are sepa-rate (unlike the majority of other brands in the market), itdoesn’t suffer from electrical failure due to fatigue fromthe wand flexing in high winds.

The transducer underwent rigorous environmental andsevere vibration tests, tested alongside several other wellknown brands and the results indicated that IS12 was oneof the best.

Are the instruments waterproof?The instruments and transducers are classed as “weather-proof”, meaning they are designed to operate in a marineenvironment without failing. This means they have towithstand salt spray, regular inundation and temperaturesvarying between Artic and Tropical without failing or fill-ing with water. All the units were tested thoroughly in anenvironmental chamber, simulating years of exposure inthe real world.

However, they are not “waterproof” in the sense that theSimrad handheld radios are waterproof - they are notwarranted against total immersion for a prolonged periodof time.

FAQs / NMEA Info

NMEA Input/OutputNMEA sentences will only be transmitted if the relevantmaster unit is present on the IS12 system, i.e the WindTransducer must be present for the Wind sentences to begenerated.

The following information can be processed by IS12 -

IS12 Data RepeaterTransmittedDBT Depth below transducerDPT Depth below transducer & offsetHDG Magnetic Heading inc Deviation &

VariationMTW Water Temperature, ºCMWV Wind Speed & AngleVHW Boat Speed & Magnetic Heading

IS12 Mega RepeaterMode 1 (IS12 Mode)ReceivedVTG Course over ground (mag & true),

speed over groundRMA Speed & course over groundRMB Cross track errorRMC Speed & course over groundBWR Bearing to waypoint (rhumb line)BWC Bearing to waypoint (great circle)GLL Geographic position (Lat/Long)XTE Cross track error

TransmittedVHW Boat speed & heading (mag & true)MTW Water temperatureDBT Water depthDPT Water depth inc. offsetMWV Apparent wind angle & speedHDG Heading (mag & true)

Mode 2 (NMEA Repeater Mode)ReceivedVHW Boat speed & heading (mag & true)MTW Water temperatureDPT Water depth inc. offsetMWV Apparent & true wind angle & speedHDG Heading (mag & true)VTG Course over ground (mag & true),

speed over groundVWR Apparent wind angle & speedRMA Speed & course over groundRMB Cross track errorRMC Speed & course over groundBWR Bearing to waypoint (rhumb line)BWC Bearing to waypoint (great circle)GLL Geographic position (Lat/Long)XTE Cross track error

TransmittedIn Mode 2, all NMEA data received is re-transmitted toNMEA Out.

18

IS12 Calibration


Entering Calibration ModeTo protect the calibration functions, these are held in ahidden menu. To enter calibration mode, press and holdthe LIGHT key -

Once in calibration mode, pressing the or keys willcycle through the available calibration options (refer tothe relevant instruction manual for full details). Press to access the selected calibration function

To exit calibration mode at any time, press and hold (LIGHT).

Shop ModeAll IS12 master instruments include a shop demonstrationmode which simulates normal operation of the instru-ment. Any repeaters in the system will also repeat thissimulated data.

To change an instrument to Shop Mode, enter theCalibration menu as shown above, and press or tocycle through the available calibration options until“Shop” is shown. Press and hold for two seconds toselect. the display will show “Off” if Shop Mode is dis-abled and “On” if it is activated. Press and hold or

for two seconds to change the Shop Mode setting betweenoff and on, and press and hold for another two secondsto confirm and exit to the Calibration menu.

The two second press-and-hold sequence is to preventaccidental activation of shop mode by the end user.

Hand Remote disable / re-enableOn the instrument in question, enter calibration mode,press or until the display shows CTRL and press .

The display will show the current setting - ON for remotecontrol enabled or OFF for remote control disabled. Thesetting can be changed using the or keys. To set theselected mode, press . The display will then return tothe main calibration menu.


Any changes will only affect that specific instrument.

Backlighting - Network / LocalNormally, IS12 is set up so that pressing LIGHT on anyinstrument will switch on all the lights on the system atthe same time (NETWORK lighting). Any changes to thelighting level are also duplicated across the whole system.This can be changed so that backlighting changes are lim-ited to the specific instrument only (LOCAL lighting).

Enter calibration mode, press until the display showsLIGHT CAL and press .

The large digits will show the current setting - NET forNetworked or LOC for Local. The setting can be changedusing the or keys.

To set the selected backlighting, press . The display willthen return to the main calibration menu.


Any changes will affect this specific instrument only. Thebacklighting on all the other instruments on the systemwill continue Networked operation unless they are alsoset to LOCAL.

UNITS

LIGHT

LIGHT

19

IS12 Fault Finding


Symptom Possible Cause Remedy

GENERAL(All Instruments)

No display on any heads • Faulty connection to power • Check power connectionin the system • Fuse has blown • Replace fuse and check

power supply current

No display on one or • IS12 data cable loose or broken • Check cable linked tomore heads in system first faulty unit. Replace if

necessary

Occasional poor • Electrical interference from other • Fit interference suppressorsperformance equipment on boat (see Section 4.4) to equipment responsible

SPEED

Display shows “00.0” • Faulty connection to transducer • Check transducer connectionwhile boat is moving • Impellor is fouled • Clean transducer impellor

DEPTH

Display shows “---” • Faulty connection to transducer • Check transducer connection• Depth over 100m

WIND

Display shows “---” • Faulty connection to transducer • Check transducer connection

DATA

Display shows “---” • Master unit not present in system • Data can only repeat datathat is available on network

• Faulty connection to master unit • Check data cable links

No NMEA Output • NMEA connections reversed • Check NMEA connections

REMOTE

Remote cannot select • Remote control facility disabled • Re-enable remote controlinstrument on instrument facility on instrument

Remote cannot select • IS12 data cable loose or broken • Check cablesany instruments and • Terminator not fitted • Fit terminator to system double beeps

Documents

IS12 Dealer Info Issue 1 - Chicago Marine Electronics