AGRA-GPS CRG-Fendt User manual

INSTALLATION
MANUAL
CRG-Fendt Roof Bridge
CRG-Fendt
July 2022

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 ii
Contact information
Agra-GPS Ltd.
Box 2585
Stony Plain, AB
T7Z 1X9
CANADA
[phone]
www.agra-gps.com
Release Notice: This is the July 2022 release of the CRG-Fendt Installation Manual.
It is assumed that users of the products described herein have either system integration or technical
experience, as well as an understanding of the fundamentals of agricultural machinery.
Disclaimer
While every effort has been made to ensure the accuracy of this document, Agra-GPS Ltd assumes
no responsibility for omissions and errors. Nor is any liability assumed for damages resulting from
the use of information contained herein. Agra-GPS Ltd shall not be responsible or liable for
incidental or consequential damages or a loss of anticipated benefits or profits, work stoppage or
loss, or impairment of data arising out of the use, or inability to use, this system or any of its
components.
DO NOT USE THE CRG-FENDT IF YOU DISAGREE WITH THE DISCLAIMER.

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 iii
Important Safety Information
Read this manual and the machine operation & safety instructions carefully before installing the
CRG. Refer to Appendix A for Product Specifications.
•Follow all safety information presented within this manual.
•If you require assistance with any portion of the installation or service of your equipment,
contact Agra-GPS for support.
•Follow all safety labels affixed to the system components. Be sure to keep safety labels in
good condition and replace any missing or damaged labels. To obtain replacements for
missing or damaged safety labels, contact Agra-GPS.
When operating the machine after installing the CRG, observe the following safety measures:
•Be alert and aware of surroundings.
•Do not operate the CRG system while impaired.
•Always remain in the operator’s position in the machine when the CRG system is engaged.
•Determine and maintain a safe working distance away from other individuals. The operator
is responsible for disabling the CRG system when a safe working distance has been
diminished.
•Ensure the CRG is disabled prior to starting any maintenance work on the machine or parts
of the CRG system.
•Follow all safety instructions from the Fendt machine as well as the John Deere system.
•The CRG must only be used in the field, never on public roads.
Electrical Safety
•Always verify that the power leads are connected to the correct polarity as marked.
Reversing the power leads could cause severe damage to the equipment.
•Verify that all cables and connectors are not in contact with sharp edges or anything that
could cause chafing, as this could result in power shorts and/or other malfunctions.
•Power is supplied to the CRG even when the key is off. Power can be removed in 3
different ways: 1) Remove the connector from the CRG, 2) Remove the fuse supplying
circuit power, or 3) Remove a battery lead while the machine is off.
Risk of Fire
•The circuit supplying 12 volt power for this product requires a fuse. The maximum fuse
rating is 5 amps, and the minimum is 1 amp.

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 1 of 20
Introduction
Congratulations on your purchase of the CRG! The CRG (Fendt version) is designed to bridge the
communication between a Fendt tractor and a John Deere (JD) display (1800, 2600, 2630, 4240,
or 4640). This allows a JD display to create maps in the John Deere format, and also provides
autosteer functionality. The operator uses the JD display to create AB-lines or field documentation,
or to handle any other GPS system input.
The CRG contains a) an RTK-capable GPS receiver, AND b) a full steering controller capable of
steering a Fendt tractor with a John Deere display!
All conditions for autosteer such as minimum speed, steering enabled, etc., must be met by the
Fendt tractor before the autosteer engage option can be activated.
NOTICE
This manual is not intended to replace the manuals for the Fendt tractor nor the John Deere GPS
system. The operator must read and understand the manuals and instructions of these systems,
before using the CRG.
Components
The CRG-Fendt kit contains the following items:
1. CRG receiver
2. Harness to connect the John Deere display to the ISO in-cab connector of the Fendt tractor
3. Harness from the CRG to the X4250 roof connector for autosteer integration
4. Harness to integrate the CRG to a John Deere tractor as a receiver-only option

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 2 of 20
Pre-Install
(Optional): Install CRG SIM Card
If your CRG is equipped with an optional cellular modem, install the SIM card BEFORE
installing the CRG. Later on, the SIM card cannot be installed or changed without removing the
CRG from the tractor.
Refer to the CRG Modem Guide for further instructions.
Determine Mount Type
The CRG is designed to mount within the Fendt interior roof panel. However, if you wish to
mount the CRG outside instead, you will need a standard receiver mount.
NOTE: the CRG mounting bracket for JD mounts is not compatible with the shallow mount
type as shown below.
Not supported This style of external
mounting is usable
If using an external mount, install the CRG by placing the rear CRG mount groove in first, and
then pushing the entire unit towards the back. Pushing backwards will compress the springs and
allow the front groove to mate with the front of the external mount. After this, be sure to pull the
CRG forwards again to ensure the front groove is fully seated.

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 3 of 20
Step 1: Install the CRG
1a) Open the Roof Panel
The CRG is installed in the roof above the main seat.
Removing the plastic cover, exposing the metal panel
behind it.
To access the connector for steering, you need to
remove all the bolts securing the inner panel,
allowing it to swing down.
CAUTION! The hinge side of the roof panel is
loose, and the panel can easily fall. Ensure the red
corner cable remains connected!
Once the panel is open, the connector(s) should be
exposed.
ENSURE YOU HAVE THE CORRECT CABLE
HARNESS TO MATCH THE CONNECTOR
STYLE AS SHOWN:
Old Style Connectors
New Style Connector

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 4 of 20
1b) Remove JD Mounting Bracket
Even though the CRG comes with a JD mounting
bracket, it is designed to fit into the Fendt sunroof and
has the same bolt pattern as the Fendt metal roof plate.
If your CRG came with the JD mount pre-installed at
the bottom, you will need to remove it.
Remove the JD mounting bracket from the CRG
bottom by removing four bolts, as shown.
The JD bracket is only needed when you use the CRG
as a receiver on a John Deere machine and mount. For
the Fendt installation it is not required.

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 5 of 20
1b) Mount the CRG
Prior to mounting the CRG, determine if the unit
contains an internal cellular modem. If so, a SIM
card must be installed.
Use the same 4 bolt locations to fasten the CRG onto
the Fendt sunroof metal base.
For older model Fendt tractors, the CRG is mounted
forward (cable connectors toward the back of the
tractor).
For newer Fendt tractors, the CRG receiver is
mounted sideways facing right (cable connectors to
the left).
The roof plate will only allow you to install the CRG
in one particular direction due to the bolt pattern on
the CRG.
IMPORTANT!
The mount direction is configured within the CRG
ISO App in the JD display (refer to page 11).
Specifying the correct direction is crucial to proper
operation. The CRG is shown mounted in a right-
hand direction.
1c) Connect the CRG
Use the harness marked X4250 and connect the 2
DTM plugs (black and grey) to the CRG. Connect
the other end to the Fendt X4250 connector.
Optionally, the configurable serial NMEA output
from the CRG can be connected to the internal
NMEA serial lines of your Fendt tractor. The 9-pin
serial connector in your cab will output various
NMEA formats based on the configuration in the
CRG ISO App (ISObus VT). Refer to the connector
image on page 7.

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 6 of 20
The CRG contains an RTK receiver which, like any
RTK receiver, requires RTCM correction data. To
achieve this, you may use an Internet-based NTRIP
server.
To get RTCM correction data into the CRG, there are
3 options available:
•Internal cellular modem (Refer to page 12 for
NTRIP caster setup).
•Bluetooth® using your mobile phone (Refer to
page 14 for Agra-GPS app setup).
•External correction source via radio modem
For an external radio, you may use the 4-pin DT
deutsch connector (shown unconnected). If the CRG
is supplied with an internal cellular modem, this
connector must remain unconnected.
ENSURE THE X4250 CONNECTOR IS
FULLY SEATED AS SHOWN.
(The side tabs will *click*.)
Close the overhead panel and plastic cover.
ENSURE THE FASTENERS ARE TIGHT.
Any loose movement of the CRG or overhead metal
panel will harmfully impact proper operation.

AGRA-GPS Ltd. Installation Manual: CRG-Fendt
July 2022 Page 7 of 20
Step 2: Mount the JD Display
The mounts for the JD display are NOT part of the
CRG kit, but can easily be manufactured in the
average shop or ordered from John Deere.
The JD display adapter cable will be plugged into the
9-pin ISO socket on the back right roof panel. Plug
the other end into the JD monitor as shown below.
Should another device in your tractor require NMEA
GPS information, this can be provided with the 9-pin
D-sub CRG serial output (shown unconnected to the
right of the cable). Configure the required signals in
the CRG ISO App.
The 4-pin ISObus access plug can be left un-
connected as shown.
The JD display may be mounted in many ways. You
may use the standard JD mounts or a RAM mount. A
display mount is not provided in the CRG kit and
must be purchased separately.
For example: RAM-270U + 2 * 1.5" balls (RAM-
202U) + 4" double socket arm (RAM-201U)
http://www.rammount.com/part/RAM-270U
Shown: JD 2600 in a Fendt 714