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3: MBX-4 Configuration and Operation
Operation of MBX-4 with Garmin GPS
You may use either the Garmin GPS (if beacon interface is supported)
or the MBX-4 menu system for tuning and monitoring performance.
The MBX-4 will display more information relating to performance than
that of the Garmin receiver, including signal strength (SS), message
throughput (MTP), station ID, and station health. However, the Garmin
may display distance to the beacon, dependent upon the transmission
of beacon station coordinates within the RTCM Type 3 message.
When interfacing a Garmin GPS receiver with the MBX-4, set the input/
output protocols to RTCM/NMEA and change the baud rate of the
Garmin to 4800.