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GPSMAP 182/182C Owner’s Manual 73
MAIN MENU > COMM TAB
• NMEA In/NMEA Out—supports the input/output of
standard NMEA 0183 data, and sonar NMEA input support
for the DBT, DPT, MTW, and VHW sentences.
• None—provides no interfacing capabilities.
Port 2
• Garmin Remote Sonar—supports a Garmin external Sonar
Module interface.
• Garmin DGPS—supports connections with a Garmin DGPS
beacon receiver.
• Other DGPS—supports DGPS input using a standard
RTCM format, without any output capabilities.
• NMEA In/NMEA Out—supports the input/output of
standard NMEA 0183 data, and sonar NMEA input support
for the DPT, MTW and VHW sentences. You can also adjust
the NMEA output.
• RTCM In/NMEA Out—supports Differential GPS (DGPS)
input using a standard RTCM format and also provides
NMEA 0183 output.
• None—provides no interfacing capabilities.
When transferring data between two Garmin
units, always set one to Host and use the other
unit to either Send or Request data.
To select an input/output format:
1. Select the Port tab, highlight the Serial Data Format field,
and press ENTER.
2. Use the ROCKER to select the setting, and press ENTER.