Nmea Output (Advanced) - Humminbird 500 Series Operation Manual

NMEA Output turns the NMEA* output on or off. 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.
NOTE: A separate purchase of accessory AS-HHGPS may be required for the NMEA
output function.
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
NMEA Output
(Advanced)
Settings: Off, On; Default = Off
83 Setup Menu Tab