J1939 Engine Network Connection Considerations - Garmin GPSMAP 8700 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
HDMI Video Considerations
To prevent corrosion due to moisture, you must use Garmin GPSMAP accessory cables when connecting the
chartplotter to the video source or display. Do not connect a media player stick directly into the back of the
chartplotter. Using different cables or connecting a media player stick into the back of the chartplotter voids
your warranty.
The GPSMAP 8700 chartplotter allows video input from HDMI video sources, such as a Chromecast
You cannot view protected HDMI content (HDCP content), though. Check the video source's manual to verify
that HDCP can be turned off for the source.
HDMI video is shared across the Garmin Marine Network, but it is not shared across the NMEA 2000 network.
Through the HDMI OUT port, you can display the video on screen, such as a television or monitor.
The Garmin GPSMAP HDMI accessory cable is 4.5 m (15 ft) long. If you need a longer cable, you should use an
active HDMI cable only. You need an HDMI coupler to connect the two HDMI cables.
You need a Garmin GPSMAP USB OTG adapter cable to power a media player stick. The USB HOST port can
supply up to 2.5 W to power a media player stick.
You must make all cable connections in a dry environment.
14
NOTICE
Description
Shield
Power, positive
Power, negative
CAN High
CAN Low
NOTICE
device.
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