Ag Leader GPS 7500 User manual

GPS 7500
User Guide
PN 2006260—ENG Rev. B

© 2018 Ag Leader Technology
2202 South Riverside Drive
Ames, Iowa 50010 USA

PN 2006260—ENG Rev. B iii
GPS 7500 User Guide ........................................................................................................................ 1
Warranty ............................................................................................................................................................................................................................ 1
Proprietary Notice ........................................................................................................................................................................................................ 1
Notice ............................................................................................................................................... 1
FCC Notices ..................................................................................................................................................................................................................... 1
Wi-Fi .......................................................................................................................................................................................................................... 2
Innovation, Science and Economic Development (ISED) Canada ............................................................................................... 2
Wi-Fi .......................................................................................................................................................................................................................... 2
Industry Canada ............................................................................................................................................................................................................ 2
European Union (EU) ................................................................................................................................................................................................. 2
GPS 7500 Wi-Fi .................................................................................................................................................................................................... 2
Radio Information ............................................................................................................................................................................................. 3
Japan .................................................................................................................................................................................................................................. 3
Wi-Fi .......................................................................................................................................................................................................................... 3
Korea ................................................................................................................................................................................................................................... 3
Wi-Fi .......................................................................................................................................................................................................................... 3
CE ........................................................................................................................................................................................................................................... 3
WEEE .................................................................................................................................................................................................................................... 3
REACH ................................................................................................................................................................................................................................. 3
TERRASTAR SERVICE ACCESS ................................................................................................................................................................................ 3
Customer Support ............................................................................................................................ 4
Contact Information ................................................................................................................................................................................................... 4
Service ................................................................................................................................................................................................................................. 4
Conventions Used In This Manual .................................................................................................... 4
Cautions and Warnings ............................................................................................................................................................................................ 4
Cross-references and Web Links ........................................................................................................................................................................ 4
Viewing this Manual Online .................................................................................................................................................................................. 4
Product Registration .................................................................................................................................................................................................. 4
Ethernet Port ......................................................................................................................................................................................................... 5
WEEE Notice ......................................................................................................................................................................................................... 5
RoHS .......................................................................................................................................................................................................................... 5
REACH ...................................................................................................................................................................................................................... 5
Introduction ..................................................................................................................................... 5
Features and Models ................................................................................................................................................................................................. 5
Installation and SetupPhysical Installation ................................................................................................................................................... 6
Connector Pin-Out ......................................................................................................................................................................................... 7
Power Supply Requirements ................................................................................................................................................................................ 7
Mounting the GPS 7500 .......................................................................................................................................................................................... 7
LEDs ....................................................................................................................................................................................................................... 8
Wi-Fi LED ................................................................................................................................................................................................................. 8
Wi-Fi ............................................................................................................................................................................................................................ 8
.......................................................................................................................................................... 9
Operation ......................................................................................................................................... 9
Transmitting and Receiving Corrections ....................................................................................................................................................... 9
Firmware and Software .................................................................................................................... 9
Firmware Updates ....................................................................................................................................................................................................... 9
Authorization Code .......................................................................................................................................................................................... 9
Updating or Upgrading Using the WinLoad Utility ................................................................................................................................ 9
Transferring Firmware Files .......................................................................................................................................................................... 9
Types of Firmware Files .................................................................................................................................................................................. 9
Application Software .............................................................................................................................................................................................. 10
Using the WinLoad Utility .................................................................................................................................................................................... 10
Open a File to Download ........................................................................................................................................................................... 10
Communications Settings ......................................................................................................................................................................... 10

iv
Downloading Firmware ...............................................................................................................................................................................10
Upgrading Using the AUTH Command .......................................................................................................................................................11
Upgrade Procedure ........................................................................................................................................................................................11
Troubleshooting .........................................................................................................................................................................................................11
Performance Specifications .......................................................................................................................12
Controller Area Network (CAN) .........................................................................................................................................................................13
GPS 7500A.5 Strobe Specifications ...................................................................................................................................................13
Replacement Parts ......................................................................................................................... 15

1
PN 2006260–ENG Rev. B
GPS 7500 User Guide
Warranty
Ag Leader warrants that its GNSS products are free from defects in materials and workmanship, subject to the conditions
set forth on our web site: www.agleader.com and for the following time periods:
GPS 7500 Receiver 2 years
Proprietary Notice
Information in this document is subject to change without notice and does not represent a commitment on the part of
Ag Leader. The software described in this document is furnished under a licence agreement or non- disclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement. It is against the law to copy the
software on any medium except as specifically allowed in the license or non-disclosure agreement.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including
photocopying and recording, for any purpose without the express written permission of a duly authorized representative
of Ag Leader.
The information contained within this manual is believed to be true and correct at the time of publication. NovAtel, and
OEMStar are registered trademarks of NovAtel Inc.
NovAtel CORRECT and NovAtel Connect are trademarks of NovAtel Inc. Manufactured and protected under U.S. Patent:
Manufactured and protected under U.S. Patent:
#5,390,207 #5,495,499 #5,734,674 #5,736,961 #5,809,064
#6,184,822 B1 #6,211,821 B1 #6,243,409 B1 #6,445,354 B1 #6,452,560 B2
#6,608,998 B1 #6,664,923 B1 #6,728,637 B2 #6,922,167 B2 #7,250,916
#7,738,536 B2 #7,738,606 B2 #7,885,317 B2 #8,467,433 B2 #8,442,097 B2
© Copyright 2014 Ag Leader. All rights reserved. Unpublished rights reserved under International copyright laws.
Notice
The following notices apply to the GPS 7500.
±WARNING!: Changes or modifications to this equipment not expressly approved by NovAtel Inc. could result in
violation of FCC, Industry Canada and CE Marking rules and void the user’s authority to operate this equipment.
FCC Notices
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.
GPS 7500 has been tested and found to comply with the emission limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. The Class B limits are designed to provide reasonable protection against harmful interference in a residential
installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
•Re-orient or relocate the GPS 7500
•Increase the separation between the equipment and the GPS 7500
•Connect the equipment to an outlet on a circuit different from that to which the GPS 7500 is connected
•Consult the dealer or an experienced radio/TV technician for help
GPS 7500

2
μCAUTION!: Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.
μCAUTION!: In order to maintain compliance as a Class “B” digital device, shielded cables should be used for the RS-
232 serial data ports (Belden 1036A or equivalent) and twisted pair cable should be used for the CAN port (shielded
twisted pair will improve CAN performance in electrically harsh environments). I/O signals should be referred to
signal ground (connector pin 5) and not power ground (connector pin 9). If I/O signals route to different areas of the
vehicle, dedicated signal grounds for I/O should be spliced into a common connection to connector pin 5 at a point
close to the GPS 7500.
Wi-Fi
GPS 7500 contains a Wi-Fi radio with the following approvals:
• FCC ID: UTU-01019715
Innovation, Science and Economic Development (ISED) Canada
GPS 7500 Class B digital device complies with Canadian ICES-003.
GPS 7500 appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
This device complies with ISED license-exempt RSS-GEN and RSS-247. Operation is subject to the following two conditions:
(1) this device may not cause interference and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Cet appareil est conforme à la norme ISED RSS-GEN et RSS-247. Son fonctionnement est soumis aux deux conditions
suivantes: (1) cet appareil ne doit pas provoquer d'interférences et (2) cet appareil doit accepter toute interférence, y
compris les interférences pouvant entraîner un fonctionnement indésirable de l'appareil.
±WARNING!: The GPS 7500 has been authorized for use in Mobile applications. At least 20 cm (8 inches) of separation
between the GPS 7500 and the User must be maintained at all times.
±WARNING!: GPS 7500 a été autorisé pour une utilisation dans les applications mobiles. Au moins 20 cm (8 pouces)
de séparation entre le GPS 7500 et l'utilisateur doit être maintenue à tous fois.
Wi-Fi
GPS 7500 contains a Wi-Fi radio with the following approvals:
• IC: 129A-01019715
Industry Canada
GPS 7500 Class B digital apparatuses comply with Canadian ICES-003.
GPS 7500 appareils numérique de la classe B sont conforme à la norme NMB-003 du Canada.
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two
conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur
de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre
le fonctionnement.
European Union (EU)
GPS 7500 Wi-Fi
NovAtel Inc. declares that the GPS 7500 Wi-Fi transceiver is in compliance with Directive 2014/53/EU (Radio Equipment).
The full text of the EU Declaration of Conformity may be obtained from the NovAtel web site at:

GPS 7500
3
PN 2006260–ENG Rev. B
www.novatel.com/products/compliance/eu-declaration-of-conformity
Radio Information
Description of Service: Wi-Fi (802.11b/g/n)
Operational Frequency: 2400 MHz to 2480 MHz
Modulation: OFDM
Rated Power: 13.4 dBm e.i.r.p
The full text of the EU Declaration of Conformity may be obtained from the NovAtel web site at:
www.novatel.com/products/compliance/eu-declaration-of-conformity
Japan
Wi-Fi
GPS 7500 contains a Wi-Fi radio with the following approvals:
Korea
Wi-Fi
GPS 7500 contains a Wi-Fi radio with the following approvals:
CE
The enclosures carry the CE mark.
"Hereby, NovAtel Inc. declares that this GPS 7500 is in compliance with the essential requirements and other relevant
provisions of the R&TTE Directive 1999/5/EC, EMC Directive 2004/108/EC and the RoHS Recast Directive 2011/65/EU."
WEEE
If you purchased your GPS 7500 in Europe, please return it to your dealer or supplier at the end of its life. The objectives of
the European Community's environment policy are, in particular, to preserve, protect and improve the quality of the
environment, protect human health and utilize natural resources prudently and rationally. Sustainable development
advocates the reduction of wasteful consumption of natural resources and the prevention of pollution. Waste electrical
and electronic equipment (WEEE) is a regulated area. Where the generation of waste cannot be avoided, it should be
reused or recovered for its material or energy.
WEEE products may be recognized by their wheeled bin label ().
REACH
NovAtel® strives to comply with the EU Directive EC 1907/2006 on chemicals and their safe use as per the Registration,
Evaluation, Authorization and Restriction of Chemical substances (REACH) for its products, including the GPS 7500 product.
Since REACH SVHC lists are updated occasionally, please contact NovAtel Customer Support if you require further
information.
TERRASTAR SERVICE ACCESS
By installing or using the TerraStar® subscription, by Ag Leader sending the subscription activation to you, or by the
payment of the subscription fee, you are agreeing to be legally bound by the related TerraStar terms and conditions (found
here: http://www.agleader.com/products/guidance-steering/gps-receiver-systems/). If you do not agree to these terms,
do not use the subscription or obtain the subscription activation code from Ag Leader. All subsequent subscriptions shall
be governed by the latest version of the terms and conditions then available on the Ag Leader web site.

4
±WARNING!: Cables may contain DEHP (CAS Number 117-81-7) in concentrations above 0.1% w/w.
Customer Support
Contact Information
Use one of the following methods to contact Ag Leader Support:
ph: [phone]
fax: [phone]
e-mail: [e-mail]
Service
There are no user-serviceable parts inside the receiver. Contact the manufacturer for a Return Material Authorization (RMA).
ph: [phone]
fax: [phone]
e-mail: [e-mail]
Conventions Used In This Manual
Cautions and Warnings
The operators manual uses the following text formatting schemes to call attention to information related to simplifying
system operation and proper operating practices to prevent accidental data loss. If in doubt about the results of
performing an action or deleting an item from the system, back up all system files to the USB external drive prior to
proceeding with the action.
÷NOTE!: Provides informative tips to assist with system setup, calibration, and operation.
μCAUTION!: Indicates specific settings, calibrations, and procedures that must be followed for proper system
performance and operation.
±WARNING!: Indicates specific instructions to avoid accidental loss of data and system configurations settings.
Cross-references and Web Links
Throughout this manual, numerous cross-references are provided to other pages or sections. These cross-references are
always shown in blue, italic text; and list the title and page number as in the following example: Refer to “Conventions Used
In This Manual” on page 6. If you are viewing this manual in PDF format, you can click on this blue text and go directly to
the link.
Links to web sites are shown in blue, italicized, and underlined text, as in the following example: To view the web site, go
to: www.agleader.com.
Viewing this Manual Online
This operators manual can be viewed online at Ag Leader’s Web site. To view and/or print the Operators Manual online,
you will need the Adobe Acrobat or Adobe Reader. The Adobe Reader software comes pre-installed on most personal
computers. If Adobe Reader is not installed on your computer the program is available for download at no charge. A link
to the Adobe download site is located at the Ag Leader Web site.
Product Registration
Contact your AutoFarm dealer for technical support.

GPS 7500
5
PN 2006260–ENG Rev. B
When registering your Ag Leader Technology products by one of the following methods, you can elect to receive notice
of any new product updates or features.
Register by mail: Ag Leader Technology
2202 South Riverside Dr.
Ames, IA 50010
Register by Fax: [phone]
Register at the Ag Leader Web site at http://www.agleader.com
Ethernet Port
The Ethernet port is a safety extra-low voltage (SELV) circuit only and is suitable for connection to another SELV circuit. Do
not connect to Telecommunications Network Voltage (TNV) circuits.
WEEE Notice
If you purchased your receiver in Europe, please return it to your dealer or supplier at the end of its life. The objectives of
the European Community's environment policy are, in particular, to preserve, protect and improve the quality of the
environment, protect human health and utilise natural resources prudently and rationally. Sustainable development
advocates the reduction of wasteful consumption of natural resources and the prevention of pollution. Waste electrical
and electronic equipment (WEEE) is a regulated area. Where the generation of waste cannot be avoided, it should be
reused or recovered for its material or energy. WEEE products may be recognized by their wheeled bin label ( ).
See www.novatel.com/products/compliance/environmental-compliance for more information.
RoHS
The GPS 7500 is in conformity with Directive 2011/65/EU of the European Parliament and of the council of 8 June 2011 on
the restriction of the use of certain hazardous substances in electrical and electronic equipment.
REACH
The GPS 7500 is compliant with Regulation (EC) No. 1907/2006 of the European Parliament and the Council of 18
December 2006 concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH). The
candidate list of Substances of Very High Concern (SVHC) published by the European Chemical Agency (ECHA) is available
at: https://echa.europa.eu/candidate-list-table
Introduction
The GPS 7500 is a high performance GNSS receiver and antenna,
capable of receiving and tracking different combinations of
GNSS L1/L2 code and carrier signals on a maximum of 555
channels. SBAS (Satellite Based Augmentation Systems) includes
WAAS (North America), EGNOS (Europe) and MSAS (Japan). SBAS
support is standard. The GPS 7500 side panel also features Light
Emitting Diodes (LEDs) for status indication.
Once properly powered, the GPS 7500 begins operating as a fully
functional GNSS system.
Features and Models
The main features of the GPS 7500 are:
•an enhanced high performance multi-frequency, multi-
constellation receiver
•a CAN port
•Emulated Radar Output
•Three RS-232 COM ports
•LED status indicators

6
•a water and dust tight enclosure
•enhanced interference mitigation
•Wi-Fi interface
•Ethernet port
•Integrated SPAN GNSS+INS functionality
•Web UI
Installation and SetupPhysical Installation
The GPS 7500 must be mounted with the connector facing the side of the vehicle.
Integrated
Magnetic
Mounts X3
GPS 7500 Screw
Mounting Holes x4
Route cable
toward back of
vehicle
Orient toward
the front of
vehicle

GPS 7500
7
PN 2006260–ENG Rev. B
Mount on a secure, stable structure capable of safe operation in the specific
environment.
If installing on a vehicle, mount the receiver on the vehicle roof, ideally close to the
pivot point of the vehicle. The receiver must be mounted with the connector facing
the side of the vehicle.
The receiver must be rigidly secured to the vehicle to avoid errors caused by
vibration and motion.
If installing in a stationary location, mount the receiver in a location that has a clear
view of the sky so that each satellite above the horizon can be tracked without
obstruction. For more information, refer to An Introduction to GNSS.
Connector Pin-Out
±WARNING!: Minimum conductor size for all wiring is 0.5 mm/20 AWG. Ag Leader recommends tying to ground any
floating input lines.
Power Supply Requirements
The GPS 7500 requires +7 to +30 VDC input power.
±WARNING!: The GPS 7500 power source must be protected by a 5 A Fast Blow Fuse or damage to wiring may result
(not covered by warranty).
Mounting the GPS 7500
Mount on a secure, stable structure capable of safe operation in the specific environment. Typical installation is a vehicle
roof, ideally close to the pivot point of the vehicle.
±WARNING!: To install the mounting plate, use the adhesive tape or the mounting holes at each corner of the plate.
μCAUTION!: The GPS 7500 must be rigidly secured to the vehicle to avoid errors caused by vibration and motion.
Pin Use Pin Use
1 COM1 TxD 8 COM3TxD
2 COM1 RxD 9 Power Negative/Return
3COM2TxD 10
RESERVED (Do not
connect)
4 COM2 RxD 11 MKI (Mark Input)
5Signal Ground
(COM/ER/MKI/PPS) 12 PPS (Pulse Per Second) Output
6CAN+ 13COM3RxD
7 CAN- 14 Power Positive/Source

8
LEDs
Wi-Fi
Wi-Fi mode (AP, Concurrent or Client)
Status (Power/GNSS)
Wi-Fi LED
State Description
Green Solid Configured as an Access Point (default)
Green Slow Flash Configured as an Access Point with at least one client connection
Blue Solid Configured as both an Access Point and a Client concurrently
Blue Slow Flash Configured as both an Access Point and a Client concurrently, with at least one Client connected to
the concurrent Access point or with the concurrent Client connected to an Access Point
White Solid Configured as a Client
While Slow Flash Configured as a Client and connected to an Access Point
Yellow Slow Flash Wi-Fi Firmware Upgrade
Red Solid No Configuration
Red Fast Flash Error State
Status
LED
State Description
Green Solid RTK/PPP Solution good or RTK/PPP/INS Solution good
Green Slow Flash PPP or RTK Converging
Yellow Solid WAAS/Single Point
Yellow Slow Flash (1
Hz)
Tracking at least one satellite but no valid position
Yellow Fast Flash (3
Hz)
Initialized and ready for communication
Red Solid Power On/Error/Reset
Red Slow Flash (1 Hz) Position Error
Red Fash Flash (3 Hz) Solution Error

GPS 7500
9
PN 2006260–ENG Rev. B
The GPS 7500 has a Wi-Fi Access Point that is enabled by default. This provides for easy connection to any
laptop/tablet/smartphone with Wi-Fi capability and a web browser.
1. Once the receiver is installed and powered, use a Wi-Fi capable laptop/tablet/smartphone to locate the GPS 7500 in
the list of detected Wi-Fi Networks and establish a connection.
The GPS 7500 PSN of the receiver (SSID) is printed on a label located by the connector. The format of the PSN is GPS
7500-<Receiver PSN>, e.g. "GPS 7500-ABCDEF1234567".
2. A prompt for a password will appear. The default password is printed on a label on the bottom of the GPS 7500. The
default password is specific to that GPS 7500 receiver.
3. Open up a web browser and enter 192.168.19.1 . The GPS 7500 automatically redirects you to the Web User
Interface which is hosted on the GPS 7500.
μWeb User Interface is compatible with recent versions of Chrome, Firefox, Internet Explorer and Safari.
μCookies should always be on and never blocked on the browser being used to connect to the Wi-Fi network.
Operation
Transmitting and Receiving Corrections
RTK or DGPS corrections can be transmitted from a base station to a rover station to improve position accuracy. The base
station is the GNSS receiver, which is acting as the stationary reference. It has a known position and transmits correction
messages to the rover station. The rover station is the GNSS receiver which does not know its exact position and can be
sent correction messages from a base station to calculate differential GNSS positions. The GPS 7500 can be used as a base
receiver to transmit RTK or DGPS corrections or a rover to receive the same corrections.
Firmware and Software
Download the most recent versions of the firmware and receiver software from http://www.agleader.com/support/.
Firmware Updates
Firmware updates are firmware releases that include fixes and enhancements to the receiver functionality. Firmware
updates are released on the web site as they become available.
Authorization Code
An authorization code, commonly known as an auth-code, is required to upgrade a GPS 7500 receiver. Auth-codes are
obtained by contacting Ag Leader Sales.
Support requires:
•model number
•serial number
•firmware version
Updating or Upgrading Using the WinLoad Utility
WinLoad is the simplest and most common way to update or upgrade an GPS 7500 receiver.
Transferring Firmware Files
To proceed with an update or possibly an upgrade, obtain the latest version of firmware from the Ag Leader Website.
Types of Firmware Files
OEM Version - Use the OEM version if the receiver or model upgrade was purchased after the cut- off date. When the OEM
version is used, Ag Leader sales must generate and provide the required authorization code. Authorization codes are
obtained by contacting Ag Leader sales.

10
The OEM version is named OEMXXXX.EXE, where XXXX is the firmware version.
Application Software
The GPS 7500 receiver has two types of software loaded, the OEMStar firmware and the GPS 7500 Application Software.
The OEMStar firmware provides the features that are common to all OEMStar receiver.
The Application Software provides the special features available on the GPS 7500, such as Emulated Radar.
The Application Software is available at http://www.agleader.com/support/ and is loaded onto the GPS 7500 receiver
using the same procedures used for the OEMStar firmware. An authorization code is not required for Application Software
updates.
Using the WinLoad Utility
If opening WinLoad for the first time, ensure the file and communications settings are correct.
Open a File to Download
Select File. Open. Navigate to the file to open.
WinLoad’s Open Window
When a file is selected, the filename appears in the main WinLoad
display area and in the title bar
Open File in WinLoad
Communications Settings
To set the communications port and baud rate, select Settings COM Settings. Choose the
computer port to use from the Com Port drop down list and the baud rate from the Download
Baudrate drop down list. Set the baud rate as high as possible (the default of 115200 is
preferred).
Downloading Firmware
1. Select the file to download.
2. Ensure the file path and name are displayed in main display area.
3. Click Write Flash to download the firmware.
4. When Searching for card appears in the main display, power cycle the receiver.

GPS 7500
11
PN 2006260–ENG Rev. B
5. If the Authorization Code window appears, enter the auth-code and click OK.
6. The receiver finishes the download and then resets. The process is complete when Done
appears in the main display area.
7. Close WinLoad. Upgrade Process Complete
Upgrading Using the AUTH Command
The AUTH command authorizes the enabling (unlocking) of model features. The AUTH command is used to upgrade a new
receiver model, available with the same firmware version as the current model. This command only functions with a valid
auth-code assigned by Ag Leader.
The upgrade can be performed directly through the Ag Leader display.
Upgrade Procedure
Example:
7WBMBK,887CB6,K5J3FH,5DF5P2,42PW8G,D1SB0GTT0,121211
When the AUTH command is executed, the receiver reboots.
Troubleshooting
There are simple ways to diagnose and resolve problems. In many cases, the issue can be resolved within a few minutes,
avoiding the inconvenience and loss of productivity that results from having to return the receiver for repair. This section
discusses troubleshooting issues and includes cross-references to other sections of the manual that may help resolve
problems.
If unsure of the symptoms or if the symptoms do not match any of those listed, use the RXSTATUS log to check the receiver
status and error words.
Try to resolve the problem using the troubleshooting guide below, then try our Knowledge Base at
AgLeader.com/knowledgebase. If you are still not able to resolve the problem, see Customer Support for troubleshooting
logs and contact information.
Troubleshooting Based on Symptoms
Symptom Related Section
The receiver is not properly powered Check the power cable. Replace if faulty.
The receiver cannot establish
communication
Check the serial cables and ports. Replace if faulty
The receiver is not tracking satellites Ensure that the antenna has an unobstructed view of the sky from horizon to
horizon.
No data is being logged Check CAN Bus and Communications with the Receiver on Display
Random data is being output by the
receiver or binary data is streaming
Check the baud rate.
Overload and overrun problems. Either the
CPU or port buffers are overloaded
Reduce the amount of logging or increase the baud rate.
The receiver is being affected by jamming Move the receiver away from any possible jamming sources
The receiver is being affected by
interference
Move the GNSS antenna away from the source of the interference signal.

12
Performance Specifications
Channel Configuration
Signals Tracked
555 Channels
GPS L1, L2, L2C
GPS (optional) L5
GLONASS L1, L2
GLONASS (optional) L1 CDMA, L2 CDMA
BeiDou (optional) B1I, B1C, B2I, B2a
Galileo (optional) E1, E5 AltBOC, E5a, E5b
SBAS L1
QZSS L1, L2
L-Band Up to 5 channels
Minimum Satellites Tracked >44
Minimum Satellite Used in Computing Position >52
Maximum Data Rate Measurements up to 20 Hz
Position up to 20 Hz
Time to First Fix
Hot: <20 s typical (Almanac and recent ephemeris saved and approximate position and time
entered)
Cold: <40 s typical (No almanac or ephemeris and no approximate position or time)
Signal Reacquisition L1 0.5 s typical
L2 <1.0 s typical
Time Accuracy 20 ns RMS
Velocity Accuracy <0.03 m/s RMS
Environmental Specifications
Operating Temperature -40°C to +70°C
Storage Temperature -45°C to +80°C
Humidity MIL-STD-810G(CH1), Method 507.6
Immersion MIL-STD-810G(CH1), Method 512.6
Ingress Protection Rating IP69
Shock MIL-STD-810G(CH1), Method 516.7
Solar Radiation EN60950-22 8.2, ISO 9022-9, Method 20, Severity Degree 03
Salt Fog IEC 60068-2-11
Sand and Dust MIL-STD-810G(CH1), Method 510.5
Random Vibration MIL-STD-810G(CH1), Method 514.7
Power Requirements
Voltage +7 to +30 VDC
Data Communications Interfaces
COM1, COM2, COM3
Electrical format RS-232
Data rates 2400, 4800, 9600 (default), 19200, 38400, 57600, 115200, 230400 bit/s
Signals supported COM1_Tx, COM1_Rx, COM2_Tx, COM2_Rx, COM3_Tx, COM3_Rx
GPS 7500 port 14-Pin Tyco Ampseal

GPS 7500
13
PN 2006260–ENG Rev. B
Controller Area Network (CAN)
The GPS 7500 supports the following NMEA2000 Parameter Group Messages (PGN):
•PGN 129029 GNSSPositionData (1 Hz)
•PGN 129025 GNSSPositionRapidUpdate (10 Hz)
•PGN 129026 COGandSOGRapidUpdate (10 Hz) .
CAN Bus
Electrical Format ISO 11898-2
Data rates 1 Mbps maximum
CAN Bus throughput is determined by slowest device on the bus
GPS 7500 port 14-Pin Tyco Ampseal
Wi-Fi Access Point
Security WPA2
Encryption AES
Wi-Fi Client Point
Security OPEN, WPA, WPA2
Encryption TKIP, AES CCMP
GPS 7500A.5 Strobe Specifications
All of the GPS 7500 strobe signals are available on the 14-Pin Interface connector. Pulse Per Second (PPS) strobes provide
synchronization signal.
Refer to GPS 7500 Interface Cable for pin out details.
Strobes Input/Output Comment
Emulated Radar
(ER)
Output 0VDC to VBATT+ (also refer to GPS 7500 Interface Cable)
PPS Output 3.3V CMOS
A time synchronization output. This is a pulse where the leading edge is synchronized
to receiver calculated GNSS Time. The polarity, period and pulse width can be
configured using the PPSCONTROL command
Available CAN Signals on the GPS 7500
CAN Pins
CAN+ Pin 6
CAN— Pin 7

14
Dimensions are in millimeters
192.0
M4X0.7 Threaded
Insert (X4)
219.0
34.00
118.50
to antenna
phase
center
62.97
125.9
62.00
19.03
X2
152.5
66.0
144.97
138.0
164.0
to antenna
phase
center
X2
69.0

GPS 7500
15
PN 2006260–ENG Rev. B
Center of Navigation
Replacement Parts
The following are a list of the replacement parts available for the Ag Leader GPS 7500 receiver. Should assistance be
required or need to order additional components, please contact your local Ag Leader dealer or Customer Service
representative.
GPS 7500 kit
Part Description Ag Leader Part
GPS 7500 4005749
Cable: 14-pin socket to DB-9 connectors 4004175-18
Mounting Plate Kit 4005762
Operators Manual 2006260
36.39
31.50
28.52
from antenna phase
center to IMU X Center
of Nav
from antenna phase
center to IMU Y Center
of Nav
from base button to
IMU Z Center of Nav

16