J1939 Engine Network Connection Considerations; Composite Video Considerations - Garmin GPSMAP 7X3 Installation Instructions Manual

J1939 Engine Network Connection Considerations

You must use a Garmin GPSMAP J1939 accessory cable when connecting the chartplotter to the J1939 engine
network to prevent corrosion due to moisture. Using a different cable voids your warranty.
If you have an existing engine network on your boat, it should already be connected to power. Do not add any
additional power supply.
This chartplotter can connect to an engine network on your boat to read data from compatible devices such as
certain engines. The engine network follows a standard and uses proprietary messages.
You should connect only one chartplotter to one engine network. Connecting more than one chartplotter to one
engine network may result in unexpected behavior.
The port labeled J1939 is used to connect the device to the existing engine network. You must route the cable
within 6 m (20 ft.) of the engine network backbone.
The Garmin GPSMAP J1939 accessory cable requires connection to a power source and proper termination. For
more information on connecting to your engine network, see the manufacturer's engine documentation.
Pin Wire Color
Bare
Red
Black
White
Blue

Composite Video Considerations

This chartplotter allows video input from composite video sources using the port labeled CVBS IN. When
connecting composite video, you should observe these considerations.
• The CVBS IN port uses a BNC connector. You can use a BNC to RCA adapter to connect a composite-video
source with RCA connectors to the CVBS IN port.
• Video is shared across the Garmin Marine Network, but it is not shared across the NMEA 2000 network.
14
NOTICE
Description
Shield
Power, positive
Power, negative
CAN High
CAN Low