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Thread: gps out to autopilot?

  1. #1

    gps out to autopilot?

    All the A/P wiring diagrams show 430W pin 56 going to trutrak/afpilot. I have a gps puck connected to my af5000. It would be nice if the AF5000 could send the serial GPS signal to the autopilot using the best available signal.

    Possible?

  2. #2
    You should wire the AF-Pilot directly to the EFIS serial port. See attached drawing, ignore the GTN650 connection if you dont have one.
    Attached Images Attached Images
    Rob Hickman
    Advanced Flight Systems Inc.

  3. #3
    Hmm. I'm curious about the change from prior drawings with the use of both rx/tx on the serial line. I have a 3-pole switch that allows me to select either a 430W or AF5000 as the ap source. The switch flips the ARINC a+b and the gps->AP serial line. Is the reverse AFS->AP serial line used/required? I've been flying without that, and I haven't noticed anything not working??

    Also, what is SER2 rx/tx configured as in the system? The drawing does not show this setting.

    Thanks!

  4. #4
    Quote Originally Posted by dhall_polo View Post
    Hmm. I'm curious about the change from prior drawings with the use of both rx/tx on the serial line. I have a 3-pole switch that allows me to select either a 430W or AF5000 as the ap source. The switch flips the ARINC a+b and the gps->AP serial line. Is the reverse AFS->AP serial line used/required? I've been flying without that, and I haven't noticed anything not working??

    Also, what is SER2 rx/tx configured as in the system? The drawing does not show this setting.

    Thanks!

    Serial Port #2 is configured as AF-Pilot. If you have both TX/RX wired to the AF-Pilot the EFIS can turn on and off the autopilot and display its current status.
    Rob Hickman
    Advanced Flight Systems Inc.

  5. #5
    So a reasonable config with a switch would be to wire the ap->afs line directly and to use a 3pdt switch to flip between the 430 gps+arinc lines and the afs gps+arinc lines?

    Btw, I do find this switch to be useful. Sometimes it's easier/convenient to manipulate climb rate directly from the ap head unit, so I'll switch to the 430w which doesn't do vert nav enroute. It is also a nice layer of redundancy.

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