Sorry to dig up old threads, but trying to learn about features/uses/etc.
If the AFS Pilot must have ARINC to navigate, what's the gps input on pin 17 for? Just to tell the AP the compass heading that the plane is flying? I can understand not following vertical signals, but it won't follow course deviation signals from a portable via the serial port?
The AF-Pilot needs ARINC (GPSS and GPSV) signals if it will be driven by a NAV or EFIS source. The AF-Pilot also has the ability to follow a GPS heading fed from a GPS device. This can be fed by the EFIS or a standalone device.
Pin 17 should be fed by the a 1200, 2400, 4800 or 9600 baud signal of NMEA-0183, Garmin Aviation Format, Apollo/UPSAT MovingMapor GPSS format. This provides directional reference to the autopilot.
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