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
Cable
Chartplotter's HDMI OUT port
GMM monitor's MAIN DVI VIDEO IN port
DVI-D cable with an HDMI
adapter
GMM monitor's GARMIN
PROCESSOR BOX port
Chartplotter's NETWORK port or the
Garmin Marine Network
Garmin Marine Network
Cable
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