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Connecting the Antenna
NMEA 2000 Network Connection
If you do not have an existing NMEA 2000 network, you must install a NMEA 2000 network on your boat. For
more information on NMEA 2000, go to garmin.com/manuals/nmea_2000.
The antenna is packaged with a NMEA 2000 T-connector and a NMEA 2000 drop cable. You will use these two
components to connect the antenna to your existing NMEA 2000 network.
A 6 m (20 ft.) drop cable is included. If more cable is needed, add an extension to your NMEA 2000 backbone,
based on the NMEA 2000 guidelines. A shorter drop cable can be installed if desired.
GPS 24xd antenna
NMEA 2000 drop cable
NMEA 2000 T-connector
NMEA 2000 backbone
Heading Calibration
After installation is complete, you must calibrate the heading and perform the auto heading alignment to
receive magnetic heading data.
Depending on the types of devices connected to the NMEA 2000 network, you can calibrate the antenna using
either a menu-based method or a basic method.
If you connect the antenna to a NMEA 2000 network with a compatible Garmin chartplotter, you can perform
either the basic calibration or the menu-based calibration
If you connect the antenna to a NMEA 2000 network without a compatible Garmin chartplotter or with a third-
party device, you must perform basic calibration instead of menu-based calibration.
8
(Performing Menu-Based Calibration, page
9).
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