All contents in this manual are copyrighted by JAVAD GNSS.All rights reserved. The information contained herein may not be used, accessed, copied,

stored, displayed, sold, modified, published, or distributed, or otherwise reproduced without express written consent from JAVAD GNSS.

OMEGAGNSS Receiver

User Manual

Version 1.3

Last Revised May 14, 2020

© JAVAD GNSS Inc., 2020

www.javad.com

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PrefaceThank you for purchasing this product. The materi-als available in this Manual (the “Manual”) have been prepared by JAVAD GNSS, Inc. (“JAVAD GNSS”) for owners of JAVAD GNSS products. It is designed to as-sist owners with the use of OMEGA and its use is sub-ject to these terms and conditions (the “Terms and Conditions”).

Note: Please read these Terms and Conditions carefully.

Terms and ConditionsUSE – JAVAD GNSS receivers are designed to be used by a professional. The user is expected to have a good knowledge and understanding of the user and safe-ty instructions before operating, inspecting or ad-justing. Always wear the required protectors (safety shoes, helmet, etc.) when operating the receiver. COPYRIGHT – All information contained in this Manu-al is the intellectual property of, and copyrighted ma-terial of JAVAD GNSS. All rights are reserved. You may not use, access, copy, store, display, create derivative works of, sell, modify, publish, distribute, or allow any third party access to, any graphics, content, infor-mation or data in this Manual without JAVAD GNSS’ express written consent and may only use such in-formation for the care and operation of your OMEGA. The information and data in this Manual are a valu-able asset of JAVAD GNSS and are developed by the expenditure of considerable work, time and money, and are the result of original selection, coordination and arrangement by JAVAD GNSS.TRADEMARKS – OMEGA™, JAVAD GNSS® are trade-marks or registered trademarks of JAVAD GNSS. Win-dows® is a registered trademark of Microsoft Corpora-tion; Bluetooth® word mark is owned by the Bluetooth

SIG, Inc. Product and company names mentioned herein may be trademarks of their respective owners.DISCLAIMER OF WARRANTY – EXCEPT FOR ANY WAR-RANTIES IN THIS MANUAL OR A WARRANTY CARD AC-COMPANYING THE PRODUCT, THIS MANUAL AND THE OMEGA RECEIVER ARE PROVIDED “AS-IS.” THERE ARE NO OTHER WARRANTIES. JAVAD GNSS DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR USE OR PURPOSE. JAVAD GNSS AND ITS DISTRIBUTORS SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN; NOR FOR INCI-DENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE OR USE OF THIS MATERIAL OR THE OMEGA RECEIVER. SUCH DIS-CLAIMED DAMAGES INCLUDE BUT ARE NOT LIMITED TO LOSS OF TIME, LOSS OR DESTRUCTION OF DATA, LOSS OF PROFIT, SAVINGS OR REVENUE, OR LOSS OF THE PRODUCT’S USE. IN ADDITION, JAVAD GNSS IS NOT RESPONSIBLE OR LIABLE FOR DAMAGES OR COSTS INCURRED IN CONNECTION WITH OBTAINING SUBSTITUTE PRODUCTS OR SOFTWARE, CLAIMS BY OTHERS, INCONVENIENCE, OR ANY OTHER COSTS. IN ANY EVENT, JAVAD GNSS SHALL HAVE NO LIABILITY FOR DAMAGES OR OTHERWISE TO YOU OR ANY OTH-ER PERSON OR ENTITY IN EXCESS OF THE PURCHASE PRICE FOR OMEGA. LICENSE AGREEMENT – Use of any computer pro-grams or software supplied by JAVAD GNSS or down-loaded from a JAVAD GNSS website (the “Software”) in connection with OMEGA constitutes acceptance of these Terms and Conditions in this Manual and an agreement to abide by these Terms and Condi-tions. The user is granted a personal, non-exclusive, non-transferable license to use such Software under the terms stated herein and in any case only with a single OMEGA or single computer. You may not assign or transfer the Software or this license without the express written consent of JAVAD GNSS. This license

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is effective until terminated. You may terminate the license at any time by destroying the Software and Manual. JAVAD GNSS may terminate the license if you fail to comply with any of the Terms or Conditions. You agree to destroy the Software and manual upon termination of your use of OMEGA. All ownership, copyright and other intellectual property rights in and to the Software belong to JAVAD GNSS. If these license terms are not acceptable, return any unused software and manual.CONFIDENTIALITY – This Manual, its contents and the Software (collectively, the “Confidential Informa-tion”) are the confidential and proprietary informa-tion of JAVAD GNSS. You agree to treat JAVAD GNSS’ Confidential Information with a degree of care no less stringent that the degree of care you would use in safeguarding your own most valuable trade secrets. Nothing in this paragraph shall restrict you from dis-closing Confidential Information to your employees as may be necessary or appropriate to operate or care for OMEGA. Such employees must also keep the Confidentiality Information confidential. In the event you become legally compelled to disclose any of the Confidential Information, you shall give JAVAD GNSS immediate notice so that it may seek a protective or-der or other appropriate remedy.WEBSITE; OTHER STATEMENTS – No statement con-tained at the JAVAD GNSS website (or any other web-site) or in any other advertisements or JAVAD GNSS literature or made by an employee or independent contractor of JAVAD GNSS modifies these Terms and Conditions (including the Software license, warranty and limitation of liability). SAFETY – Improper use of OMEGA can lead to inju-ry to persons or property and/or malfunction of the product. The OMEGA receiver should only be repaired by authorized JAVAD GNSS warranty service centers. Users should review and heed the safety warnings in Appendix C.MISCELLANEOUS – The above Terms and Conditions may be amended, modified, superseded, or can-celed, at any time by JAVAD GNSS. The above Terms and Conditions will be governed by, and construed in accordance with, the laws of the State of California, without reference to conflict of laws.

WEEE DirectiveThe following information is for EU-member states

only: The use of the symbol indicates that this product may not be treated as household waste. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. For more detailed information about the take-back and recycling of this product, please contact your supplier where you purchased the product or consult.

Screen CapturesThis manual includes sample screen captures. Your actual screen can look slightly different from the sam-ple screen due to the receiver you have connected, operating system used and settings you have speci-fied. This is normal and not a cause for concern.

Technical AssistanceIf you have a problem and cannot find the informa-tion you need in the product documentation, contact your local dealer. Alternatively, request technical sup-port using the JAVAD GNSS World Wide Web site at: www.javad.comTo contact JAVAD GNSS Customer Support use the QUESTIONS button available on the www.javad.com/

Regulatory Information

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The following sections provide information on this product’s compliance with government regulations.

FCC Class A Compliance

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:This device may not cause harmful interference, andThis device must accept any interference received, including interference that may cause undesired op-eration.This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful in-terference when the equipment is operated in a com-mercial environment. This equipment generates, uses, and can radiate ra-dio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Oper-ation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Canadian Emissions Labeling Re-quirementsThis Class А digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.Cet appareil numérique de la classe А respecte toutes les exigences du Réglement sur le matériel brouilleur du Canada.

RF Exposure evaluation for multi-transmitter product proceduresIn mobile exposure conditions, simultaneous trans-mission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting an-tennas incorporated in a host device, based on the calculated power density, is ≤ 1.0, i.e.

Where Si is the Power Density on the given distance for i=1, 2, 3…..n,

n – number of antennas transmitting simultane-ously, (MPE)i is the Limit of MPE for the given transmit-ting frequency.

The is the MPE ratio of each antenna, deter-mined at the minimum test separation distance re-quired by the operating configurations and exposure conditions of the host device, according to the ratio of power density to MPE limit, at the frequency of in-terest.

Calculation of Power Density at a giv-en distance

Power Density (S mW/cm2 ) is calculated as

Where Pa– Average Power input to the antenna (in mW),Pa= P×DCDC – Source-based Duty Cycle (numeric) G – gain of the antenna in the direction of interest relative to an isotropic radiator (numeric),d – distance to the center of radiation of the anten-na (in cm).

Regarding the Javad OMEGA device containing multi-ple transmitters:• UHF module (FCC ID: WJ4LMR400),• 4G LTE Mini Card (FCC ID: N7NMC7700),• Wi-Fi/Bluetooth Module (FCC ID: TFB-TIWI1-01),the following calculation of RF exposure compliance is performed:

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Note: N7NMC7700 can transmit only in any one of four modes in time of operation. The worst case is transmitting in Cell band.

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Description and OperationIntroduction

OMEGA is the most advanced GNSS receiver. It does not include integrated antenna and controller, based on our new 864 channel chip, equipped with the inter-nal 4G/LTE/3G card, easy accessible microSD and mi-croSIM cards. It is suited for applications like machine control and in marine and avionics applications.

Adding GrAnt and VICTOR-LS makes a complete RTK systems. It is well suited for monitoring and net-work stations.

Figure 1. OMEGA

OMEGA can receive and processes multiple signal types (including the latest GPS C/A, P1, P2, L2C (L+M); GLONASS C/A, L2C, P1, P2; SBAS L1) improving the ac-curacy and reliability of your survey points and posi-tions, especially under difficult jobsite conditions.

Several other features, including multipath miti-gation and common tracking, provide under-canopy

and low signal strength reception. The OMEGA receiv-er provides the functionality, accuracy, availability, and integrity needed for fast and easy data collection .

When calculating an absolute position, a stationary or moving receiver determines its three-dimensional position with respect to the origin of an Earth-Center Earth-Fixed coordinate system. To calculate this po-sition, the receiver measures the distance (called pseudoranges) between it and at least four satellites. The measured pseudoranges are corrected for clock differences (receiver and satellites) and signal prop-agation delays due to atmospheric effects. The posi-tions of the satellites are computed from the ephem-eris data transmitted to the receiver in navigation messages. When using a single satellite system, the minimum number of satellites needed to compute a position is four. In a mixed satellite scenario (GPS, GLONASS, Galileo), the receiver must lock onto five or more satellites to account for the different time scales used in these systems and to obtain an absolute po-sition.

Achieving quality position results requires the fol-lowing elements:

Accuracy – The accuracy of a position primari-ly depends upon the satellite geometry (Geometric Dilution of Precision, or GDOP) and the measurement (ranging) errors.

– Differential positioning (DGPS and RTK) strong-ly mitigates atmospheric and orbital errors, and counteracts Selective Availability (SA) signals the US Department of Defense transmits with GPS signals.

– The more satellites in view, the stronger the sig-nal, the lower the DOP number, the higher position-

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ing accuracy.Availability – The availability of satellites affects

the calculation of valid positions. The more visible satellites available, the more valid and accurate the position. Natural and man-made objects can block, interrupt, and distort signals, lowering the number of available satellites and adversely affecting signal reception.

Integrity – Fault tolerance allows a position to have greater integrity, increasing accuracy. Several factors combine to provide fault tolerance, including:

– Receiver Autonomous Integrity Monitoring (RAIM) detects faulty GNSS satellites and removes them from the position calculation.

– Five or more visible satellites for only GPS or only GLONASS; six or more satellites for mixed scenarios.

– Satellite Based Augmentation Systems (WAAS, EGNOS, etc.) creates and transmit, along with DGPS corrections, data integrity information (for example, satellite health warnings).

– Current ephemerides and almanacs.

Specifications

Main Features*• GPS L1/L2/L5• GLONASS L1/L2/L3 • QZSS L1/L2/L5/LEX• Galileo E1/E5A/E5B/E5/E6 • BeiDou B1/B1-2/B5A/B2/B3 • SBAS L1/L5• IRNSS L5• Update rate 1Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz• RTK rate 1Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz• Real-time Data Input/Output JPS, RTCM SC104 v. 2.x and 3.x, CMR• Real-time Data Output NMEA 0183 v. 2.x and 3.0, BINEX, RINEX• RAIM• Data recording up to 16GB• IEEE 1588 protocol support• In-Band Interference Rejection• Multi-Base Code Differential Rover• Code Differential Base

• Advanced Multipath Reduction• Event marker• 1 PPS timing strobe• CAN port• External Reference Frequency Input/Output • Up to 2 high-speed RS232/RS422 serial ports• 2 USB Ports (Host and Device)• Ethernet• WiFi 5 GHz and 2.4 GHz• Bluetooth and Bluetooth LE• Internal 4G LTE Mini Card• Internal Radio Modem• External GNSS Antenna TNC Female connector

GNSS Receiver• Signals Tracked

• GPS C/A, L1C(P+D), P1, P2, L2C(L+M), L5(I+Q)• GLONASS C/A, P1, P2, L2C, L3(I+Q)• Gallileo E1(B+C), E5A(I+Q), E5B(I+Q), AltBoc, E6(B+C)• QZSS C/A, L1C(P+D), L2C(L+M), L5(I+Q), SAIF, LEX-(P+D)• BeiDou B1, B1-2, B1C(P+D), B5A(I+Q), B2, B5B(I+Q), B3• SBAS L1, L5• IRNSS L5

• Autonomous Accuracy (rms)

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110.

6*

134.

1*

165.9*

209.2*

44.3*

61*

14.6

*85

.9*

193.2*

4.3*4 holes

Notes:1. DIMENSIONS ARE IN MILLIMETERS.THIRD ANGLE PROJECTION2. * REFERENCES DIMENSION.

Bottom view. Connectors

Top view

1 2 3 4 5 6 7 8 9 10 11

12 13 14 15 6 17

1. On/Off button2. Battery status3. Power status4. GSM status5.Bluetooth status6. WiFi status7. UHF status8. Ethernet status9. Satellites status10. Position11. Recording status

12. Power port13. Ethernet port14. MicroSIM slot15. MicroSD slot16. USB port17. USB port

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• Storage Temperature***: -20O C to +45O C• Humidity: 100% condensing• Dimensions:

• 4.91 x 6.69 x 1.77inches (125 x 170 x 45 mm) without radio• 4.91 x 6.69 x 2.56 inches (125 x 170 x 65 mm) with radio

• Weight: 2.2 lbs (1 kg) without radio 2.87 lbs (1.3 kg) with radio• Survives a 2 m drop onto hard surface

Radio• 4G LTE Mini Card:

• LTE, HSPA+, HSDPA, HSUPA, WCDMA, GSM, GPRS, EDGE (up to 100 Mbps); • LTE, EV-DO, 1xRTT CDMA (up to 100 Mbps)

• MicroSIM card slot: One; user accessible, fully sealed• Radio Modem:

• Internal 406-470MHz UHF radio• Internal 902-928/ 868-870 MHz ISM radio (op-tional)• Base Power Output: 1 Watt

I/O• Communication Ports:

• Wi-Fi 5 GHz and 2.4GHz (802.11 a, b, g, n, d, e, i)• Bluetooth 4.1 Compliance and CSA2 Support• Dual-mode Bluetooth and Bluetooth LE• Full-duplex 10BASE-T/100Base-TX Ethernet port• High Speed USB 2.0 Host (480 Mbps)• High Speed USB 2.0 Device (480 Mbps)• One high speed RS-422 serial port (up to 460.8 Kbps)• Two high speed configurable RS-232/RS-422 serial ports (up to 460.8 Kbps)• One CAN 2.0 A/B port

• Other I/O Signals:• 1PPS Output• Event Marker Input• External Reference Frequency Input/Output• External Calibrator• External GNSS antenna• External cellular antenna• External radio antenna

User Interface• SD card slot: High Capacity microSD Card (mi-

croSDHC) up to 128GB Class 10; user accessible,-fully sealed• LED Indication: On/OFF, Battery status, External power, Cellular, Bluetooth, Wi-Fi, Radio, Ethernet, Satellites, Position, Recording statuses• Buttons: On/Off button; Bluetooth On/Off; Wi-Fi On/Off; Recording On/Off

Power management• Battery: Rechargeable, Lightweight Li-Ion bat-tery 85 Wh (nom.)• Operation Time: 12 hours on one charge• External Power Input : 10-30 V DC• Charging: Power management notifies user when battery needs charging and protects battery from overcharging.

Turning On/OffTo turn ON the receiver, press and hold the pow-

er button until the LEDs briefly flash. To turn OFF the receiver, press and hold the power key for more than one and less than four seconds (until both the SAT and the REC LEDs are off).

Charging and PoweringWarning: Risk of explosion if battery is replaced by an incor-

rect type. Dispose of used battery according to the instructions.Warning: Before beginning to work, fully charge the bat-

teries for maximum operating time. An approximately 6-hour charge cycle will fully charge the batteries; the batteries will charge simultaneously. The batteries can not be overcharged.

CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS

Warning: The Li-Ion batteries used in the battery packs should run at no less than 80% capacity after 500 charging cy-cles. These batteries do not need to be drained before recharg-ing.

Warning: Never attempt to open the casing of the detach-able batteries! Lithium-Ion batteries can be dangerous if mis-handled!

Warning:

Warning: Do not incinerate or heat battery pack above 212 degrees Fahrenheit (100 degrees Celsius). Excessive heat can cause serious damage and possible explosion.

Warning: The batteries (or batteries installed) shall not be exposed to excessive heat such as sunshine, fire or the like.

Warning: Do not attempt to open the battery pack.

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Warning: Do not disassemble the battery pack.Warning: Do not charge in conditions different than speci-

fied.Warning: Do not use other than the specified battery char-

ger.Warning: Do not short circuit the battery pack.Warning: Do not crush or modify the battery pack.

Power connector

110.

6*

134.

1*

165.9*

209.2*

44.3*

61*

14.6

*85

.9*

193.2*

4.3*4 holes

Notes:1. DIMENSIONS ARE IN MILLIMETERS.THIRD ANGLE PROJECTION2. * REFERENCES DIMENSION.

Power supply requirementsThe socket-outlet shall be installed near the equip-

ment and shall be easily accessible.A single external power supply with 5 pin ODU

connector or SAE connector is necessary to operate OMEGA. If external power supply has only SAE con-nector, Receiver-to-SAE power cable shall be used. The external power supply needs to be Listed for US and Certified for EU countries, it needs also to be a Limited Power Source and have an output rated for 10...30 V DC, 6A. This may not be the same range as other JAVAD GNSS products with which you are famil-iar. To avoid the introduction of hazards when oper-ating and installing, before connecting of the equip-ment to the supply, make sure that the supply meets local and national safety ordinances and matches the equipment’s voltage and current requirements.

Figure 2. Power supply / Charger

Warning: Never attempt any maintenance or cleaning of the

supply while plugged in. Always remove supply from AC power before attempting service or cleaning.

If the voltage supplied is below the minimum spec-ification, the receiver will suspend operation. If the voltage supplied is above the maximum specification, the receiver may be permanently damaged, voiding your warranty.

Make sure cords are located so that will not be stepped on, tripped over, or otherwise subjected to damage or stress. Do not operate equipment with a damaged cord or plug – replace immediately. To re-duce the risk of damage to the equipment, pull by the plug body rather than the output cord when discon-necting the equipment.

Warning: Do not operate the supply if it has received a sharp blow, been dropped, or otherwise damaged. Do not disassem-ble the supply.

Before connecting the external power source and the receiver, make sure that the power source match-es the receiver’s voltage and current requirements.

The OMEGA comes from the factory with the batteries charged and ready to use so you can begin exploring its interface and familiarizing yourself right away while reading this manual.

To check the status of the internal batteries, view the BAT LED or check the status using JAVAD GNSS software.

When the OMEGA is turned off and charging, the four LEDs will keep you apprised of its charging prog-ress for both of the individual battery packs.

All (4) green LEDs first appear at 90%. Interrupting the charging and then resuming will have no effect until the discharged state is less than 8 volts. To reach maximum charge, allow an additional 20 minutes once all green is seen.

To charge the receiver internal batteries, take the following steps:

• Plug the Receiver-to-SAE cable’s connector into the power port of the receiver . • Connect the opposite end of this cable with the battery charger’-s SAE connector.• Plug the other end of this cable into an AC outlet with cable. Leave overnight.

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Data Storage and Mobile Telecommunications

In addition to the internal solid state data storage on the triumph-ls, you will also want to use the pro-vided microSD card as a safeguard for your field data as well as when you install updates. Updates to the system will automatically use the microSD card as a backup if present.

MicroSDUse the provided high-speed microSD card. Replace

with Class 10 or better.

MicroSIM

If you work in areas with good cell coverage that also happen to have Real Time Network (RTN) ser-vices from area base stations, you may wish to pur-chase a data plan through your local telecommuni-cations provider. Take care to properly orient the SIM card as it will only work when it’s been oriented as shown below.

The SIM card slot allows a standard microSIM card to be installed in the receiver. Once installed, the SIM card provides a unique identification for the re-ceiver’s GSM module and enables the receiver’s GSM functionality based on the subscribed services (the receiver board accesses the GSM module which ac-cesses the SIM card). The SIM card usually remains inside the receiver.

Cards InstallationUse the special tweezers to install and remove

these tiny devices and to help mitigate oily finger-prints on the contacts.

• Align the card exactly as it is shown on the rubber port cover.• Insert the card with the leading edge exactly as shown on the rubber port cover• Fully insert the card into the recess .• These are Push-Push style card slots; to remove the card, fully insert the card again.

Data and power ports• Power –is used to connect the receiver to an ex-ternal power source. This port can also be used to charge the batteries. • Serial – is used for communication between the receiver and an external device. • Ethernet - is used to connect the receiver to local network. • USB – is used for high-speed data transfer and communication between the receiver and an ex-ternal device.

Figure 3. Receiver’s ports11

0.6*

134.

1*

165.9*

209.2*

44.3*

61*

14.6

*85

.9*

193.2*

4.3*4 holes

Notes:1. DIMENSIONS ARE IN MILLIMETERS.THIRD ANGLE PROJECTION2. * REFERENCES DIMENSION.

LED indications

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Attaching an external UHF/GSM antenna

Depending upon which options you chose when you purchased your OMEGA, the type of external UHF antenna shown in this discussion may differ from yours, but the procedure presented will remain the same.

When doing RTK surveying, the reception of your base station’s corrections by the rover can be en-hanced using an external UHF antenna. Begin by at-taching the external antenna. In this image, we see the 2.5 dB gain antenna (30-597161-01) attached to the Triumph-ls.

For the purposes of this discussion it is assumed that you have already attached the external UHF an-tenna, are in the field, the LS is powered on, that it’s setup as the RTK rover, the RTK base is on and the UHF radio is broadcasting corrections.

Anytime the UHF communications are interrupted; such as in this example, it will take a few seconds up to a minute or so for them to be reestablished.

UpdatesKeeping your OMEGA up to date is nearly effort-

less; however, you do need to ensure that you have Internet access in order to download the updates to the various firmwares, softwares and even messages from other users.

The OMEGA will automatically detect nearby WiFi Access Points. For you to see those points detected, as well as their respective signal strength, tap on the WiFi icon in the top row of icons on the Home screen and then at the bottom of that screen tap on Network. Select the desired access point, tap on Connect, enter the case sensitive password, if any, and you should get connected automatically. You will see the chosen access point change from blue to red indicating that it is current.

Sometimes you may need to restart the unit for de-tection of Access Points. This is a known issue with the operating system that is presently being worked on.

If you do not have WiFi or for some reason are un-able to connect to it, but do have a wired local area network, you can connect the OMEGA to your net-

work using a cable connected to the LAN port and your network interface card or router.

The next option afforded for receiving firmware and software updates is via your data plan associated with your cell service provider and the previously in-stalled SIM card. Depending on your data plan, some fees may apply.

In all instances; WiFi, wired-LAN and 3G, the tar-geted functionality is in the OMEGA being able to re-ceive updates from JAVAD GNSS over the Internet. At present, these types of network connections do not extend to facilitating survey data transfers between your PC and the receiver.

Option Authorization File (OAF)

JAVAD GNSS issues an Option Authorization File (OAF) to enable the specific options that customers purchase. An Option Authorization File allows cus-tomers to customize and configure the OMEGA receiv-er according to particular needs, thus only purchas-ing those options needed.

Typically, all OMEGA receivers ship with a tem-porary OAF that allows the receiver to be used for a predetermined period of time. When the receiver is purchased, a new OAF activates desired, purchased options permanently. Receiver options remain intact when clearing the NVRAM or resetting the receiver.

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Managing and Operating Receiver using NetView

This software is available on the JAVAD GNSS web-site. If downloading the program(s) from the website, extract the program’s files into a folder on your hard drive. The following sections describe installing this software, and other sections throughout the manual describe using this software with the receiver.

Note: Refer to the NetView Software Manual for full details on installing and using NetView Software.

1. If downloading the program from the website, extract the program files into a folder on your hard drive.

2. Navigate to the location of the NetView program and double-click the Setup.exe icon.

3. Follow the on-screen installation instructions. Click Install to continue. Keep the default installation location or select a new location. If desired, create a shortcut on the computer’s desktop for quick access to NetView.

JAVAD GNSS NetView software provides an inter-face for various configuration, monitoring, and man-agement functions for the receiver.

To configure, manage files, or maintain the receiv-er, connect the receiver and a computer using one of the following methods and start NetView:

• a USB cable and a computer/controller with the JAVAD GNSS USB driver installed;• a Bluetooth®-enabled external device (comput-er/controller).

Once you have established a connection between the receiver and the computer/controller, you will be able to configure the receiver and its components, send commands to the receiver, download files from the receiver’s memory; as well as, upload new firm-ware, upload an OAF, and upload configuration files to a receiver, using NetView

Establishing an USB connectionMake sure the computer has JAVAD GNSS’s USB

driver installed (available from www.javad.com) be-fore continuing.

Using the USB cable, connect the USB port on the receiver to a USB port on the computer.

Press the power buttons on the receiver and com-puter to turn them on.

Start NetView and select USB as type of connection mode and select USB port ID from the list

Figure 4. NetView: USB connection

Establishing a Wireless ConnectionThe OMEGA receiver contains Bluetooth® wireless

technology that allows file transfer and synchroni-zation between the receiver and any other external device that supports Bluetooth® wireless technology. OMEGA and external device connection procedure varies slightly depending on the type of external de-vice used. Refer to your Bluetooth®-enabled external device documentation for more detailed connection information.

In general, the connection procedure with PC is as fol-lows:1. Turn on a Bluetooth®-enabled PC and your receiv-er. The default external device mode is Master; the re-ceiver’s Bluetooth® module mode is Slave.2. Instruct the external device (Master) to search for the receiver (Slave).3. Once the Master device detects the receiver, use the procedure described in the external device’s doc-umentation to connect it with the receiver.4. Start NetView, select SER as type of connection mode, and specify the port the receiver is connected to

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Configuring the ReceiverBoth Base and Rover receivers must be configured

according to the desired survey method. • In applications where real-time positioning re-sults are required, the Base receiver provides the correction information needed to properly cal-culate the location of the Rover receiver. A Base station is normally set up over a known point and collects GPS/GLONASS data from satellites. As the receiver picks up satellite data, it measures the carrier and code phases to accurately compute and verify its location. Then, the receiver transmits this information via radio (UHF or GSM) to the Rov-er receiver. • The Rover receiver applies correction informa-tion from the Base station to its current location to accurately calculate one or more points. Rovers are mobile GNSS receivers on a survey pole or bi-pod that compares the information from the Base station to the data it logs from satellites and ap-plies correction algorithms to accurately calculate a new point.• In applications intended for post-processing, the receivers typically log code phase and/or carrier phase measurements separately from common satellites and during the same time interval. This data is then processed using post-processing soft-ware (for example, Justin).

When configuring receivers for RTK surveying, use the following list to ensure the receivers are properly set up:

• Configure one receiver as an RTK Base station and the other receiver as an RTK Rover.• Configure the communication data link for trans-mitting and receiving corrections.• Set up the Base receiver over a known point to begin collecting static observation data and trans-mitting corrections. Set up the Rover receiver to begin collecting RTK data.

When configuring receivers for post-processing surveying, use the following list to ensure the receiv-ers are properly set up:

• Configure one receiver as a Base station and the other receiver as a Rover. • Set up the Base receiver over a known point to begin collecting static observation data. Set up the Rover receiver to begin collecting static or kine-matic observation data.

Both Base and Rover receivers must be configured according to the desired survey method.

In applications where real-time positioning results are required, the Base receiver provides the correc-tion information needed to properly calculate the lo-cation of the Rover receiver. A Base station is normally set up over a known point and collects GPS/GLONASS data from satellites. As the receiver picks up satellite data, it measures the carrier and code phases to ac-curately compute and verify its location. Then, the receiver transmits this information via radio (UHF or GSM) to the Rover receiver.

The Rover receiver applies correction information from the Base station to its current location to accu-rately calculate one or more points. Rovers are mo-bile GNSS receivers on a survey pole or bipod that compares the information from the Base station to the data it logs from satellites and applies correction algorithms to accurately calculate a new point.

In applications intended for post-processing, the receivers typically log code phase and/or carrier phase measurements separately from common satel-lites and during the same time interval. This data is then processed using post-processing software (for example, Justin).

The following Base and Rover configurations are recommended for the most common applications. However, you can select configuration parameters as needed for your particular jobsite.

Note: Do not make other changes without consulting the NetView Software Manual.

1. Connect the receiver and computer, start NetView and establish the connection as described above.

2. Click Receiver>Parameters on the left panel.3. In the General tab check antenna status and set

the parameter Antenna Input to External if the external antenna will be used.

4. Open the Log files tab and then TriPad tab and set the following parameters, click Apply.

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Note:

Parameter Base Rover

Implicit Message Output Period

15 seconds

Elevation mask angle 15 degrees

File name prefix Enter a unique ID, such as the last 3 digits of receiver’s serial number. By deafault the prefix is log

FN key mode (starts/stops the data recording when FN button is used)

Select LED blink mode switch for Static data

Select Occupation mode switch (for RTK)

Initial dynamic mode - Select Dynamic (for trajectory survey)

Click Apply every time after the parameter was changed, otherwise the receiver won’t save the changes. Click Refresh, to ensure the changed parameters and new configura-tion are saved.

Figure 5. Log Files tab

Figure 6. TriPad tab

5. Open Positioning tab and set the Elevation mask to 15 degrees .

Figure 7. Elevation mask

6. To set up the base station, open the Base tab and set the following parameters: Antenna Phase Center Position (APC) - enter latitude, longitude, and altitude (ellipsoidal height) values of the antenna position. Do one of the following:

• If known, type in the values.• Click Get from receiver to use the current antenna position.

7. Restart your receiver. Open the Base tab and check coordinates. Click Refresh, to refresh the pa-rameters.

Figure 8. Base tab

7. To set up the rover, open Positioning tab and set the Position Computation Mode - this drop-down list box allows selecting the mode of position computa-

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tion:• pd -carrier phase differential (RTK) with fixed ambiguities• pf - carrier phase differential (RTK) with float am-biguities• cd- code differential (DGPS) mode• wd - wide area code differential mode (WDGPS)• sp - single point positioning mode1

Open the Rover tab and set up the following pa-rameters:

• RTK Position Computation Mode – se-lect Extrapolation for RTK float (kine-matic), or Delay for RTK fixed (static). If Extrapolation is selected, the rover will extrapo-late the base station’s carrier phase measurements when computing the rover’s current RTK position. If Delay is selected, the rover will not extrapolate the base station’s carrier phase measurements to compute the current rover position. Instead, the RTK engine will compute either a delayed RTK po-sition (for the epoch to which the newly received RTCM/CMR message corresponds) or the current stand-alone position (while waiting for new RTCM/CMR messages coming from the base).• Confidence Level for Ambiguity – list box governs the process of the RTK engine fixing integer ambi-guities. The RTK engine uses the ambiguity fix indi-cator when making a decision whether to fix ambi-guities or not. Low, Medium and High correspond to the indicator’s 95%, 99.5% and 99.9% states, respectively. The higher the specified confidence level, the longer the integer ambiguity search time. This is the price one pays for the higher reliability of the ambiguity fixed solution.

Figure 9. Rover tab

9. For RTK survey, open the Ports tab and set up the parameters according Table 2, then click Apply.

Note: For the survey with the post-processing keep default parameters..

Figure 10. Ports tab

Parameter Base Rover

Input - The same correction type as Base has

Output Select the correction type. -

Period (sec) Set the period of correction output

-

Baud rate Baud rate for the corresponding receiver port

RTS/CTS Enable

10. Open Advanced tab, and then Multipath

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Reduction subtab. Activate Code multipath reduction (mpnew) on base and rover for DGPS mode.

For RTK mode activate Carrier multipath reduction (mpnew) as well (mpnew).

Figure 11. Multipath Reduction

11. Click Apply, to save the made changes and settings into receiver’s memory and close the dialog window. The receiver configuration will be kept in the receiver till you will change them or will clear NVRAM.

Note: For detailed description of settings and parameters see NetView Software Manual..

Setup and surveyAfter configuring the receivers for surveying, each

receiver needs to be setup up and the receiver’s height measured and the survey can begin. The MinPad pro-vides quick access for logging data, changing receiver modes, and viewing general data logging and satel-lite information during a survey.

A typical GPS survey system consists of a Base sta-tion set up over a known point and a Rover receiver set up to be a mobile data collector. After setting up the Base and Rover receivers, the antenna height must be measured.

Before collecting data, make sure the Base and Rover receivers contain a current almanac and cur-rent ephemeris data.

The Base station must be set up, logging data, and transmitting data before setting up the Rover receiv-er. Receiver setup for either post-process or RTK sur-veys is the same.

Measure Antenna HeightThe location of the antenna relative to the point

being measured is very important for both surveys in which the elevation of the points is important and in surveys for horizontal location only. Horizontal sur-veys are often larger in area than can reliably fit on a flat plane, therefore the antenna adjustment must be done in three dimensions and then projected onto a two dimensional plane.

The receiver calculates the coordinates of the an-tenna’s phase center. To determine the coordinates of the station marker, the user must specify the follow-ing:

• Measured height of the antenna above the sta-tion marker• Method of measuring the antenna height• Model of the antenna used

Antennas have two types of measurements:• Vertical – measured from the marker to the an-tenna reference point (ARP) located on the bottom of the receiver at the base of the mounting threads.• Slant – measured from the marker to the lower edge of the antenna slant height measure mark (SHMM) located on both end panels of the receiver.

The point to which surveying with GNSS measures is called the Phase Center of the antenna. This is anal-ogous to the point at which a distance meter mea-sures in a prism. A user must enter the prism offset to compensate for this point not being at a physical sur-face of the prism. For a GNSS antenna, the offset is en-tered depending on the type of measurement taken.

For vertical, the offset is simply added to the mea-sured vertical height to produce a “true” vertical height.

For slant height, the vertical height must first be calculated using the radius of the antenna, then the offset can be added.

The offsets are different because of the difference in location between the slant measuring point and the vertical measuring point.

Measure the antenna height above the control point or marker, either the slant height or the vertical height.

Record the antenna height, point name, and start time in the field notes

Collecting dataSee the remaining sections in this chapter for more

information on collecting data.• Turn on the receiver.• Once the receiver has locked on to eight or more satellites the SAT light will green. • A red color of POS LED indicates that the receiver has not solved a position. Four or more satellites provide optimal positioning.• Once the red POS LED is green, the receiver has a position and surveying can begin; wait for green

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light before beginning data collection. This en-sures that the receiver has the correct date and time, and is locked on to enough satellites to en-sure good quality data.• The process of locking on to satellites normally takes less than one minute. In a new area, under heavy tree canopy, or after resetting the receiver, it may take several minutes.• To begin collecting data, press and hold the Re-cord button (for more than one second and less than five seconds).• Release the Record button when the REC (record-ing) LED turns green. This indicates that a file has opened and data collection has started. The REC LED blinks each time data is saved to the internal memory.

When finished, press and hold the Record button until the REC LED light goes out.

To turn off the receiver, press and hold the power key until all lights go out, then release.

Static Surveying for Base StationsStatic surveying is the classic survey method, well

suited for all kinds of baselines (short, medium, long). At least two receiver antennas, plumbed over survey marks, simultaneously collect raw data at each end of a baseline during a certain period of time. These two receivers track four or more common satellites, have a common data logging rate (5–30 seconds), and the same elevation mask angles. The length of the obser-vation sessions can vary from a few minutes to sev-eral hours. The optimal observation session length depends on the surveyor’s experience as well as the following factors:

• The length of the baseline measured• The number of satellites in view• The satellite geometry (DOP)• The antenna’s location• The ionospheric activity level• The types of receivers used• The accuracy requirements• The necessity of resolving carrier phase ambigu-ities

Generally, single-frequency receivers are used for baselines whose lengths do not exceed 15 kilometers (9.32 miles). For baselines of 15 kilometers or greater, use dual-frequency receivers.

Dual-frequency receivers have two major benefits. First, dual frequency receivers can estimate and re-

move almost all ionospheric effect from the code and carrier phase measurements, providing much greater accuracy than single-frequency receivers over long baselines or during ionospheric storms. Secondly, dual-frequency receivers need far less observation time to reach the desired accuracy requirement.

After the survey completes, data the receivers col-lect can be downloaded onto a computer and pro-cessed using post-processing software (for example, JAVAD GNSS Justin).

Kinematic (Stop & Go) Surveying for Rover Stations

In a kinematic, stop and go survey, the stationary receiver (Base station) is set up at a known point such as a survey monument, or an unknown point. The re-ceiver continually tracks satellites and logs raw data into its memory. The Rover receiver is set up at an unknown point and collects data in static mode for 2 to 10 minutes. When finished, assign the Rover to kinematic status and move to the next survey point. At this point, and each subsequent point, the receiv-er is changed to static mode to collect data. So, while moving, the Rover is in kinematic mode, and while collecting data, the Rover is in static mode.

• Set up the Rover at an unknown point and press power. Allow the Rover to collect static data for two to ten minutes. The REC LED will be yellow.• Check the SAT light for satellites tracked. • When finished, press the FN button for less than 1 second to assign the Rover to kinematic.• Move the Rover to the next location (survey point), and press the FN button for less than a sec-ond to collect the data in static mode for two to ten minutes. • Repeat steps five and six until all points have been surveyed. The occupation time for the points depends on the same factors as for the static sur-vey method. • When finished, press the FN button for one to five seconds to stop logging data. Turn off the Rover if needed. This method of GNSS survey allows the operator to reduce the point occupation time, thus permitting field crews to survey many more points compared to the other methods available.

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Real Time Kinematic SurveyingWith RTK surveying, as with kinematic surveying

described above, one receiver serves as the reference station and conducts observations with its antenna affixed to a stationary tripod or some other device. The other receiver functions as a rover and conducts observations (using an antenna) affixed to a mobile pole and moved to observation points.

Unlike post-processed kinematic surveys, RTK sur-veys utilize a communications link between the Base and Rover. Using a radio modem link, the Base receiv-er transmits its measurement and location data to the Rover receiver. The Rover, based on the transmit-ted data and its own observation data, immediately conducts a baseline analysis and outputs the results.

Usually, the receiver will start to output the coor-dinates of the antenna’s phase center along with the solution type within 10–30 seconds. However, UHF ra-dios and GSM phones may take as long as 60 seconds to synchronize. The geodetic coordinates displayed on the Location tab are always computed in WGS84 and have four solution types.

• Standalone – where the receiver computes 3D coordinates in autonomous mode without using differential corrections.• Code differential – where the Rover receiver com-putes the current relative coordinate in differential mode using only pseudo ranges.• RTK float – where the Rover receiver computes the current relative coordinates in differential mode using both pseudo ranges and phases; how-ever, with a float solution, the phase ambiguity is not a fixed integer number and the “float” estimate is used instead.• RTK fixed – where the Rover receiver computes current relative coordinates, with ambiguity fixing, in differential mode. The LQ field reflects the status of the received differential messages and contains the following information:

• Data link quality in percentage• Time (in seconds) elapsed since the last re-ceived message• Total number of received correct messages (dependent on the message type received)• Total number of received corrupt messages (dependent on the message type received)• If the receiver is not (for some reason) receiv-ing differential corrections, or if none of the ports has been configured to receive differential

corrections, the LQ field will either be empty or it will look like this: 100%(999,0000,0000).

Receiver and File Maintenance

If post-processing the data after completing a mea-suring, the data in the receiver’s memory will need to be downloaded to a computer. Downloading and deleting files will also prepare the receiver’s memory for the next measuring. Occasionally, the receiver’s NVRAM may need to be cleared to eliminate commu-nication or tracking problems. As project expectations expand, the receiver’s OAF may need to be updated to provide expanded operation and functionality. The receiver requires firmware to properly operate and provide appropriate functionality. As JAVAD GNSS re-leases firmware updates, loading these updates into the receiver will ensure that the receiver operates at its full potential.

Deleting Files and Downloading Files to a Computer

When your measuring finishes, you can down-load your measuring files to a computer for storage, post-processing, or backup. Also, the DELTA memo-ry holds a finite amount of files and information, so downloading the files to a computer ensures that no files are lost. You should download files as soon as possible after collecting data at the jobsite. NetView provides a File Manager to download files to your computer and delete files from the receiver DELTA.

Connect your receiver and computer. Start NetView. Establish connection between NetView and receiver.

Click File on the left panel. On the right panel ap-pears the list of files, saved in receiver’s memory. Select the file(s) to download:

Figure 12. Downloading files

Click the Download button. During the download,

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status indicators display each file.To delete files from your receiver click Delete.

Click Yes at the delete files confirmation dialog box. NetView deletes the selected files.

Managing Receiver Options

Checking an OAFFor a complete list of options and their details, visit

the JAVAD GNSS website.You can check the status of your receiver’s options,

and load any new OAFs via NetView. Connect your receiver and computer. See

“Connecting the Receiver and a Computer” on page 28 for this procedure. Start NetView. Establish con-nection between NetView and receiver.

Click on the receiver name on the left panel. On the right open Options tab.

• Option name – a name/description of the option• Current – shows if the option is in force at the present or not• Purchased – if the option is purchased or not• Leased – if the option is leased or not• Date – the date the leased option will be dis-abled, if applicable

Loading OAFsJAVAD GNSS dealers provide customers with OAF

files. For any OAF related questions, E-mail at sup-port@javad.com. Please have your receiver ID num-ber available.

Connect your receiver and computer. Start NetView. Establish connection between NetView and receiver.

Click on the receiver name on the left panel. On the right open Options tab.

To upload a new options file, click on Upload but-ton, and select the options file. Refresh – Updates the window

Navigate to the location of the new Option Authorization File. OAFs have .jpo extension and are unique to each receiver.

Clearing the NVRAMThe receiver’s Non-Volatile Random Access Memory

(NVRAM) holds data required for satellite tracking, such as almanac and ephemeris data, and receiver position. The NVRAM also keeps the current receiv-er’s settings, such as active antenna input, elevation masks and recording interval, and information about the receiver’s internal file system.

Even though clearing the NVRAM is not a common (nor normally a recommended) operation, there are times when clearing the NVRAM can eliminate communication or tracking problems. Clearing the NVRAM in your receiver can be interpreted as a “soft boot” in your computer. After clearing the NVRAM, your receiver will require some time to collect new ephemerides and almanacs (around 15 minutes). Clearing the NVRAM of your receiver will not delete any files already recorded in your DELTA’s memory. However, it will reset your receiver settings to factory default values.

In addition, the NVRAM keeps information about the receiver file system. Note that after clearing the NVRAM, the receiver’s SAT LED will flash yellow for a few seconds indicating that the receiver is scanning and checking the file system.

Using MinPad to Clear NVRAMPress the power button to turn off the receiver.Press and hold the FN button.Press and hold the power button for about 4 to 8

seconds. Release the power button while continuing to hold the FN button.

Wait until the four LEDs blink yellow.Release the FN button.

Using NetView to Clear NVRAMConnect your receiver and computer. Start NetView.

Establish connection between NetView and receiver.Click on the receiver name on the left panel. On the

right click on Actions4Clear NVRAM.Confirm NVRAM clearing.

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Checking Firmware VersionUse NetView to check the firmware version of your

receiver.Connect your receiver and computer. Start NetView.

Establish connection between NetView and receiver.Click on the receiver name on the left panel. On the

right appears the information about receiver includ-ing receiver model, ID, firmware version.

To save this information to the .txt file, click Reports4Receiver info on the right panel.

Loading New FirmwareBase and Rover receivers must be loaded with the

same firmware version. Use the latest firmware ver-sion, available for download from the JAVAD GNSS website, to ensure your receiver has the most recent updates.

To load new firmware use NetView.Connect your receiver and computer. Start NetView.

Establish connection between NetView and receiver.Click on the receiver name on the left panel. On the

right appears the information about receiver.Click Action4Update firmware.Select the file with the mew firmware and click

Open.

TroubleshootingThis chapter will help you diagnose and solve some

common problems you may encounter with your re-ceiver.

Warning: Do not attempt to repair equipment yourself. Do-ing so will void your warranty and may damage the hardware.

Check This First!Before contacting JAVAD GNSS support, check the

following:• Check all external receiver connections carefully to ensure correct and secure connections. Double check for worn or defective cables.• Check all power sources.• Check that the most current software is down-loaded onto the computer and that the most cur-rent firmware is loaded into the receiver. Check the JAVAD GNSS website for the latest updates.• Then, try the following:• Reset the receiver using NetView: Receiver name (on the left panel)4Actions 4Reset.• Restore default settings using NetView Receiver name (on the left panel)4Actions4Initial parameters.• Clear the NVRAM.

If the problem persists, see the following sections for other solutions.

Receiver Problems• The following are some of the most commonly encountered receiver problems.• The receiver port used for connection is not in Command mode.• Connect your receiver and a computer using a free port and start NetView.• Change the Input for the port used for connec-tion to “Command”. • The receiver does not lock on to satellites for a long period of time.• See “Managing Receiver Options” for details on how to check current options.• Order a new OAF with the desired options ac-tivated to enable or extend validity of the corre-sponding receiver options. Contact your dealer or visit the JAVAD GNSS website for details.• Refer to the NetView Software Manual for a de-tailed description of options.• The receiver tracks too few satellites

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• The elevation mask value is too high (above 15 degrees).• Lower the elevation mask. See “TriPad Config-uration” for information on setting the elevation mask.• The measuring is conducted near obstructions (tree canopy, tall buildings, etc.).• Check that the Multipath Reduction boxes have been enabled.• Connect your receiver and a computer using a free port and start NetView.• Click enable Multipath reduction and click Apply.• Move to an area free of obstructions, if applica-ble. • The receiver cannot obtain Code Differential and/or RTK solutions.• Incorrect Base coordinates entered• Specify the correct coordinates for the Base sta-tion using NetView or another suitable field data collection software. • The receiver is not configured as a Base or Rover.• If the receiver should function as a Base, ensure it has the proper configuration.• If the receiver should function as a Rover, ensure it has the proper configuration.• The corresponding receiver options may be dis-abled or expired.• See “Managing Receiver Options” for details on how to check current options.• Order a new OAF with the desired options ac-tivated to enable or extend validity of the corre-sponding receiver options. Contact your dealer or visit the JAVAD GNSS website for details.• Refer to the NetView Software Manual for a de-tailed description of options.• There are not enough common satellites. In or-der to obtain a fixed solution, the Base and Rover should track at least five common satellites.• Ensure that both the Rover and Base receivers use the same, and updated, almanac. • Check the elevation masks of the Rover and Base receivers; they should be the same. See “TriPad Configuration” for information on setting the ele-vation mask.• A discrepancy exists between the differential standards used at the Base and Rover receivers. Ensure the Base and Rover receivers use the same corrections input/output format:• Connect your receiver and a computer and start NetView.

• Click and the Ports tab. Use the same input/out-put format for both receivers.• Poor satellite geometry (PDOP/GDOP values are too high).• Conduct your measuring when PDOP values are low.• The elevation mask is above 15 degrees.• Lower the elevation mask. • The transmitting and/or receiving antenna may be improperly connected.• Check that the radio modem’s antenna is secure-ly and properly connected to the antenna connec-tor.• Check that the radio modem’s antenna is un-damaged. If damaged, contact your JAVAD GNSS dealer to replace the antenna.• The specified baud rate is incompatible with the baud rates the receiver supports.• The baud rate is the rate at which the receiver transmits differential messages to the receiver and vice versa. Change the baud rate to that which your receiver supports.• The Base and Rover receivers use different radio link parameters.• Configure the Base and Rover radio receivers ac-cording to the procedures listed in the applicable section.• The distance between the Base and Rover is too far.• Close the distance between the Base and Rover.• Use repeaters to increase radio coverage.• There may be a source of radio interference that disrupts radio communications.• Change the RF channel (if possible).• Use a spectrum analyzer to detect the radio char-acteristics of the interfering signal and change your system’s configuration accordingly.• Remove the source of jamming signal or relocate your radio antennas (if possible).• The receiver does not start data logging• The memory option is disabled or expired.• Check that the memory option is enabled. For details, see “Checking an OAF” .• The receiver’s memory has no free space.• Download and/or delete data files to free up space for new files. Use the AFRM feature.

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Technical SupportIf the troubleshooting hints and tips in this

Operator’s Manual fail to remedy the problem, con-tact JAVAD GNSS Support.

Before contacting JAVAD GNSS Customer support about any problems with the receiver, see “Check This First!” for some solutions that may fix the issue.

To contact JAVAD GNSS Customer Support use the QUESTIONS button available on the www.javad.com.

For quick and effective support, provide a detailed description of the problem.

Safety WarningsNote: Read these instructions.Note: Keep these instructions.Note: Heed all warnings.Note: Follow all instructions.

Clean only with a damp cloth.Do not block any of the ventilation openings. Install

in accordance with the manufacturer’s instructions.Do not install near any heat sources such as radi-

ators, heat registers, stoves, or other apparatus (in-cluding amplifiers) that produce heat.

Protect the power cord from being walked on or pinched particularly at plugs, convenience recepta-cles, and the point where they exit from the appara-tus.

Only use attachments/accessories specified by the manufacturer.

Use only with a pole, cart, stand, or tripod, speci-fied by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

Unplug this apparatus during lightning storms or when unused for long periods of time.

Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, or has been dropped.

Apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, shall be placed on the apparatus.

THIS EQUIPMENT IS NOT SUITABLE FOR USE IN LO-CATIONS WHERE CHILDREN ARE LIKELY TO BE PRES-ENT.

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Storage PrecautionsAlways clean the instrument after use. Wipe off

dust with a cleaning brush, then wipe off dirt with a soft cloth.

Store in a location with a temperature of from -20° to +45°C, and no exposure to direct sunlight.

Use a clean cloth, moistened with a neutral deter-gent or water, to clean the unit. Never use an abrasive cleaner, ether, thinner benzene, or other solvents.

Always make sure the instrument is completely dry before storing. Dry the unit with a soft, clean cloth.

General WarningsJAVAD GNSS receivers are designed for measuring

and measuring related uses (that is, measuring coor-dinates, distances, angles and depths, and recording such measurements). This product should never be used:

Without the user thoroughly understanding opera-tor’s manual.

After disabling safety systems or altering the prod-uct.

With unauthorized accessories.Without proper safeguards at the measuring site.Contrary to applicable laws, rules, and regulations.The Omega should never be used in dangerous en-

vironments. Use in rain or snow for a limited period is permitted.

900 Rock Avenue, San Jose, CA 95131, USA

Phone: +1(408)770-1770 Fax : +1(408)770-1799

www.javad.comAll rights reserved © JAVAD GNSS, Inc., 2020