Nmea 2000 Considerations; Nmea 0183 Connection Considerations - Garmin GPSMAP 8700 Installation Instructions Manual

• A Garmin Marine Network cable must be used for all Garmin
Marine Network connections.
◦ Third-party CAT5 cable and RJ45 connectors must not be
used for Garmin Marine Network connections.
◦ Additional Garmin Marine Network cables and connectors
are available from your Garmin dealer.
• The NETWORK ports on the device each act as a network
switch. Any compatible device can be connected to any
NETWORK port to share data with all devices on the boat
connected by a Garmin Marine Network cable.
Station Connection Considerations
This device can be set up in conjunction with other compatible
Garmin devices to work together as a station. When planning
stations on your boat, observe these considerations.
• Devices earlier than the GPSMAP 8000 series and GPSMAP
8500 series cannot be used in a station.
• Although it is not necessary, it is recommended that you
install all of the devices you plan to use in one station near
each other.
• No special connections are necessary to create a station, as
long as all of the devices are connected to the Garmin Marine
Network (Garmin Marine Network Considerations, page
• Stations are created and modified using the device software.
See the owner's manual provided with the device for more
information.
GMM Monitor Connection Considerations
You can use a GMM monitor to view and control the GPSMAP
8700. When connecting a GMM monitor to the GPSMAP 8700
device, you must observe these considerations.
• The touchscreen functionality of the GMM monitor can be
used to control one GPSMAP 8700 device.
• Although it is recommended to use Garmin DVI-D cables,
high-quality third-party DVI-D cables may be used. Before
you route a DVI-D cable, you should connect all devices to it
for testing.
• You must use an HDMI to DVI-D cable or adapter.
• You must connect the GMM monitor to the same power
source as the GPSMAP 8700 device. If this is not possible,
you must connect the devices to the same ground.
• You must connect the GMM monitor to a NETWORK port on
the GPSMAP 8700 device or to the same Garmin Marine
Network as the GPSMAP 8700 device.
• The touch data is sent over the Garmin Marine Network.
Devices
Item Device
GPSMAP chartplotter
GMM touchscreen monitor
Connections
From To
Chartplotter's HDMI GMM monitor's MAIN DVI
OUT port VIDEO IN port
GMM monitor's Chartplotter's NETWORK
GARMIN PROCESSOR port or the Garmin Marine
BOX port Network

NMEA 2000 Considerations

If you are connecting to an existing NMEA 2000 network,
identify the NMEA 2000 power cable. Only one NMEA 2000
power cable is required for the NMEA 2000 network to operate
properly.
A NMEA 2000 Power Isolator (010-11580-00) should be used in
installations where the existing NMEA 2000 network
manufacturer is unknown.
If you are installing a NMEA 2000 power cable, you must
connect it to the boat ignition switch or through another in-line
switch. NMEA 2000 devices will drain your battery if the NMEA
2000 power cable is connected to the battery directly.
This device can connect to a NMEA 2000 network on your boat
to share data from NMEA 2000 compatible devices such as a
GPS antenna or a VHF radio. The included NMEA 2000 cables
and connectors allow you to connect the device to your existing
NMEA 2000 network. If you do not have an existing NMEA 2000
network you can create a basic one using cables from Garmin.
If you are unfamiliar with NMEA 2000, you should read the
Technical Reference for NMEA 2000 Products at
2).
/manuals/nmea_2000.
The port labeled NMEA 2000 is used to connect the device to a
standard NMEA 2000 network.
Item

NMEA 0183 Connection Considerations

Cable
• The chartplotter provides one Tx (transmit) port and one Rx
DVI-D cable with
(receive) port.
an HDMI
• Each port has 2 wires, labeled A and B according to the
adapter
NMEA 0183 convention. The corresponding A and B wires of
Garmin Marine
each internal port should be connected to the A (+) and B (-)
Network Cable
wires of the NMEA 0183 device.
NOTICE
Description
NMEA 2000 compatible Garmin device
GPS antenna
Ignition or in-line switch
NMEA 2000 power cable
NMEA 2000 drop cable
12 Vdc power source
NMEA 2000 terminator or backbone cable
NMEA 2000 T-connector
NMEA 2000 terminator or backbone cable
garmin.com
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