Author: SlatyeSubject: Garmin G5 and IFD 540
Posted: 12 Mar 2018 at 5:39am
I'm just about to connect a dual G5 (plus GMU-11 and GAD-29B) setup to an IFD540, but would someone mind checking the connections/settings for me? Other hardware in the system is a Bendix-King KT74 transponder, STEC 50 autopilot, and Garmin GI-106A nav indicator. What I've gathered from reading the installation manuals is:
IFD540 settings for the G5s:
RS-232 channel 1 output: MapMX format, connects to both G5s to provide GPS data (I’ll also have a backup GA35 antenna just for the G5s)
RS-232 channel 1 input: disabled
GPS ARINC 429 output: low speed, GAMA 429 format (connects to GAD-29B)
VOR/ILS ARINC 429 output: low speed (connects to GAD-29B)
GPS ARINC 429 input 1: low speed, GAD 42 format (connects to GAD-29B)
SDI: LNAV 1
VNAV: Enable Labels
IFD540 settings for the KT-74:
RS-232 channel 2 output: ADS-B (Avi) format (connects to KT-74 directly)
IFD540 settings for the GI-106A:
Direct connection from dedicated IFD540 ports, no need to configure any I/O
Is that right?
Two futher questions:
(1) Do I need to connect the IFD540 VOR/ILS ARINC429 input to the GAD-29B too? The IFD540 manual shows connections for the Aspen systems, and their airdata output only goes to the GPS ARINC 429 input section. However, the G5 install manual shows the ARINC 429 connection going to both GPS and VOR/ILS sections on a GNS-530W.
(2) Is there any way to have the G5 output its altitude data to the KT-74? I’ve got an altitude encoder, but if I can dump that and rely on the G5’s internal encoder then that saves weight and wiring, as well as ensuring that the G5 and the KT-74 agree.
Thanks for any help!