GNSS data source
Your radio includes a built-in GNSS (GPS) receiver, which can be used to obtain position data. Your radio can also use position data from a GNSS (GPS) receiver connected to the same SeaTalk NG or NMEA 2000 network.
Manual positionIf your radio’s internal receiver cannot obtain a position fix or if your radio’s internal receiver is switched off, a network data source for position data shall be used instead, if available.