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Thread: Current 4500 wiring recommendations

  1. #1

    Current 4500 wiring recommendations

    I prewired my panel for the AF Pilot a couple years back, with the serial input to the AP head fed from the AF-GPS signal, according to the wiring plan I had at the time. (I have no IFR navigator, only the AF-GPS for position source.)

    Now I'm getting around to installing the autopilot and see the more current diagrams call for four connections to the AP head:
    - ARINC in & out from converter
    - RS-232 in & out from EFIS serial port

    Does the AF Pilot require the discrete RS-232 comm with the 4500s EFIS? What features are gained/lost by connecting it that way, instead of feeding the NMEA signal direct from the GPS? Will it function at all without?

    My other devices are VPX Pro, GTX327, and CO Guardian (which could be dropped if necessary). Proposed serial port plan for comments:
    Serial 1 ARINC
    Serial 2 CO Guardian -OR- AF Pilot ???
    Serial 3 VPX Pro
    Serial 4 Icarus/NMEA

    Thanks ~
    Joshua Wyatt
    RV-9A N627DW @ KRST - Flying
    4500sEE + 4500sMFD | Stratux Dual-Band, GTN650Xi

  2. #2
    The Autopilot needs a GPS source, you can run it directly from the GPS to the AP. The AF-5000 series can turn on and off the AP from the screen using the RS-232 signal.
    Rob Hickman
    Advanced Flight Systems Inc.

  3. #3
    very useful, thanks.
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