Humminbird 787c2i - Manual (Page 139)

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NMEA Output
(Advanced)
NMEA Output turns the NMEA* output on or off. This menu choice is available
only when in Advanced User Mode (see Setup Menu Tab: User Mode.) NMEA
Output should be turned On if you connect the NMEA Output wires of the GPS
Receiver cable to another NMEA-compatible device, such as an autopilot.
*NMEA 0183 is a National Marine Electronics Association standard for data communication.
The following NMEA sentences are output when NMEA Output is turned On:
DPT- Depth
MTW - Water Temperature
GLL - Lat/Lon Position
GGA - GPS Fix Data
RMC - Recommended Minimum Specific GNSS Data
VTG - Course Over Ground and Ground Speed
ZDA - Time and Date
When navigating, the following NMEA sentences are also output when
NMEA Output is turned On:
APB - Autopilot Sentence B
BWR - Bearing and Distance to Waypoint
RMB - Recommended Minimum Navigation Info
To turn NMEA Output on or off:
1. Make sure you are in Advanced User Mode, then highlight NMEA
Output on the Setup menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the NMEA
Output to On or Off (Off, On, Default = Off).