Supported datagram formats for GPS (position) information
Accurate and reliable information from navigation systems are useful for the sonar operation.
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When enabled, the vessel's current geographical position is shown on the top bar. The following datagram formats are supported:
NMEA GLL
The NMEA GLL datagram transfers the latitude and longitude of vessel position, the time of the position fix and the current status from a global positioning system (GPS).
NMEA GGA
The NMEA GGA datagram transfers time-, position- and fix-related data from a global positioning system (GPS).
NMEA GGK
The NMEA GGK datagram is used to decode the PTNL, Time, Position, Type and DOP (Dilution of Precision) string of the NMEA 0183 output.
PTNL,GGK
PTNL ,GGK is a proprietary datagram from Trimble (https://www.trimble.com). The PTNL, GGK datagram is longer than the NMEA-0183 standard of 80 characters. The PTNL, GGK datagram is used to decode the time, position, type and dilution of precision of the current position.
NMEA RMC
The NMEA RMC datagram transfers the time, date, position, course and speed data from a global navigation satellite system (GNSS) receiver.
NMEA VTG
The NMEA VTG datagram contains the actual course and speed relative to the ground.
NMEA ZDA
The NMEA ZDA datagram contains the universal time code (UTC), day, month, year and local time zone.