4-10 DSM250 Digital Sounder Module
The factory default for all NMEA sentences is transmission ON.
Disable the sentence by selecting the OFF soft key.
The following table displays the available NMEA sentences and
their meanings.
The changes do not take effect until after ENTER is pressed. Con-
sult your NMEA instrumentation documentation to determine
which strings should remain ON.
Table 4-2: NMEA Sentences
Sentence Meaning
APB Autopilot Sentence “B”
BWC Bearing & Distance to Waypoint
BWR Bearing & Distance to Waypoint – Rhumb Line
DBT Depth Below Transducer (see note below)
DPT Depth (see note below)
MTW Water Temperature
RMB Recommended Minimum Navigation Information
RSD Radar System Data
RTE Routes
TTM Tracked Target Message
VHW Water Speed and Heading
VLW Distance Travelled through the Water
WPL Waypoint Location
GGA Global Positioning System Fix Data
GLL Geographic Position – Latitude/Longitude
RMA Recommended Minimum Specific Loran-C Data
RMC Recommended Minimum Specific GPS/TRANSIT Data
VTG Course Over Ground and Ground Speed
ZDA Time and Date
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