Garmin GPS175

farmrjohn
Posts: 15
Joined: Thu Jan 21, 2021 10:26 pm

Re: Garmin GPS175

Post by farmrjohn »

With a Mini is it necessary to use both the RS-232 and ARINC-429 connections or would just the RS-232 work?
GRT_Jeff
Posts: 832
Joined: Tue Dec 11, 2012 12:11 am

Re: Garmin GPS175

Post by GRT_Jeff »

Both are required for approach display functions on any EFIS.

RS232 -- Provides basic GPS data including position, speed, and flight plan waypoints.

ARINC-429 -- Provides approach lateral and vertical deviation data, modes, autopilot commands (for GNAV mode), and additional GPS data including time and date.
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