190-01004-02
GTN 625/635/650 TSO Installation Manual
Rev. F
Page 5-11
5.2.4 Serial Data
5.2.4.1 Serial Data Function
5.2.4.1.1 RS-232
The GTN is capable of interfacing with other aviation instruments by transmitting RS-232 Type 1 and
Type 2 data on any RS-232 OUT port. The data consists of the following (refer to Section B.1 for a
detailed data format description):
Current latitude, longitude, and GPS altitude in feet (see Note below)
Current velocity vector (ground speed and direction of velocity vector over the ground)
Distance to waypoint
Cross track error
Desired track
Destination waypoint identifier
Bearing to destination waypoint
Magnetic variation
Navigation and warning status
Waypoint sequence in route
Waypoint position (latitude and longitude) and magnetic variation
NOTE
Aviation RS-232 data may be transmitted with or without the current GPS altitude in feet.
Refer to Appendix B.
The GTN can receive pressure altitude, air data, and fuel data from certain systems on any RS-232 IN port.
Summary of Contents for GTN 625
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