Garmin G950 Pilot's Manual page 16

SYSTEM OVERVIEW
• GMU 44 (1) – The Magnetometer measures local magnetic field and sends data to the AHRS for processing to
determine aircraft magnetic heading. This unit receives power directly from the AHRS and communicates with
it via an RS-485 digital interface.
• GWX 68 (1) – (optional) Provides airborne weather and ground mapped radar data to the MFD, through the
GDL 69A, via HSDB connection.
• GDL 69/69A (1) (if installed) – A SiriusXM satellite radio receiver that provides real-time weather information
to the MFD (and, indirectly, to the inset map of the PFD) as well as digital audio entertainment. The GDL 69A
communicates with the MFD via HSDB connection. A subscription to the SiriusXM Satellite Radio service is
required to enable the GDL 69A audio entertainment capability.
4 Garmin G950 Pilot's Guide for the Pilatus PC-6 190-00870-02 Rev. A