GMR 400/600/1200 xHD Installation Instructions
5
Voltage Converter Unit
+
-
15 A slow-blow fuse
To radar
To RF ground
To power
10–40 Vdc
(20–40 Vdc for
the GMR 1204
and 1206)
GMR 400/600/1200 xHD
Voltage Converter Unit
Sample boat fuse block
Connecting the Voltage Converter to a Boat Fuse Block
Installing the Power and Network Cables
Route the cable as needed, based on the type of mount you are using.
When installing the power and network cables, consider the following:
• To ensure safety, use the appropriate tie-wraps, fasteners, and sealant to secure the cable along a route and through any bulkhead or deck.
Avoid running the cable near moving objects, high-heat sources, or through doorways and bilges.
• Avoid installing the cable next to or parallel to other cables, such as radio antenna lines or power cables. This is essential to avoid
interference to or from other equipment. If this is not possible, shield the cable with metal conduit or a form of EMI shielding.
• You may need to drill a 1
1
/
4
in. (31.7 mm) hole for routing the power/network cable. Garmin provides a rubber cable grommet to cover the
cable installation hole.
◦ The grommet does NOT provide a waterproof seal. To waterproof the grommet, apply a marine sealant.
◦ You can purchase additional cable grommets through Garmin or a Garmin dealer.
• Use the optional field-installable RJ-45 network connector (included) to create a custom-length Garmin Marine Network cable if needed
To install the cable assembly:
1. Align the notch and locking ring on the power cable to the power connector. Press the 2-pin
power cable to the power connector. Tighten the power-cable locking ring clockwise until it is
firmly sealed..
2. Press the RJ-45 marine network cable to the RJ-45 socket. Tighten the RJ-45 locking ring
clockwise until it is firmly sealed.
3. Route the power and network cables through the front of the radar (Figure 7), or through a
hole drilled through the mounting surface (Figure 8). Avoid excessively bending or twisting the
cables.
4. Install the hatch on the front of the radar.
Figure 7
Figure 8
Power connector
RJ-45 network
cable connector
