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Item

Description

12 Vdc power source

NMEA 2000 terminator or backbone cable

NMEA 2000 T-connector

NMEA 2000 terminator or backbone cable

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.

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

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

NOTICE

Description

Shield

Power, positive

Power, negative

CAN High

CAN Low

NOTICE

™

device. You cannot view

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.

Item Device or port

HDMI source, such as a

Chromecast device

GPSMAP chartplotter

Monitor, such as a computer or

television

HDMI source's HDMI OUT port

Chartplotter's HDMI IN port

Chartplotter's HDMI OUT port

Monitor's HDMI IN port

Chartplotter's USB OTG or USB

HOST port

HDMI source's USB HOST port

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.

Touchscreen Controls for a Connected Computer

To prevent corrosion due to moisture, you must use Garmin

GPSMAP accessory cables when connecting the chartplotter to

the computer. Using different cables voids your warranty.

You can connect the chartplotter to a computer to see the

computer screen and to control the computer using a

touchscreen. To see the computer screen, you must connect the

computer to the HDMI IN port and connect the touchscreen to

the HDMI OUT port. To control the computer using the

chartplotter touchscreen, you must connect the computer to the

USB OTG port and connect the touchscreen to the USB HOST

port.

The HDMI Cable (010-12390-20) 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.

The Garmin OTG Adapter Cable (010-12390-11) is 1.8 m (6 ft)

long and the Garmin USB Cable (010-12390-10) is 4.5 m (15 ft)

long. If you need a longer cable, you should use a USB hub or

USB repeater extension cable only.

You must make all cable connections in a dry environment.

Cable

Garmin HDMI Cable

GPSMAP USB OTG adapter

cable to power the HDMI

source, if possible (2.5 W

maximum)

NOTICE