Garmin Aera 760 Pilot's Manual page 220

Appendix D
4) Touch the 'Serial Data Format' field. A vertical list is displayed.
5) Touch 'Connext 57600 Baud'.
6) From the Main Menu, touch Tools > Data Link to view the GDL
50R/51R/52R connection status.
aera 760 Bare Wire Connections to GDL 50R/51R/52R
204
Garmin aera 760 Pilot's Guide 190-02674-00 Rev. B