AXP340/322 ADS-B Transponder - Altitude monitor on AXP340

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Altitude monitor on AXP340

Printed From: Avidyne
Category: Avidyne General
Forum Name: AXP340/322 ADS-B Transponder
Forum Description: Topics on the Avidyne AXP340/322 ADS-B Transponder
URL: https://avidynelive.com/forum_posts.asp?TID=1952
Printed Date: 26 Mar 2026 at 2:12pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: Altitude monitor on AXP340

Posted By: 260SE
Subject: Altitude monitor on AXP340
Date Posted: 14 Mar 2020 at 1:58pm

Does anyone actually wire this up to the audio panel and use it?

It says it’ll alert when more than 200 ft off of the selected (pressure) altitude. Maybe I’m missing the utility of this function, but 200 seems like a huge deviation, in the IFR world at least.

Replies:

Posted By: oskrypuch
Date Posted: 15 Mar 2020 at 8:01am

I used it when I had a G* 330ES in the panel.

Once I installed an ASPEN PFD, I never used the 330ES warning again. In any case, the 330ES is long gone.

If you don't have any other altitude warning, I see no reason not to wire it, and use it. Could save your "deviation" bacon some time.

* Orest

Posted By: Gring
Date Posted: 15 Mar 2020 at 12:55pm

I have it wired to my audio panel and will occasionally set it.

Posted By: dmtidler
Date Posted: 15 Mar 2020 at 1:43pm

Posted By: paulr
Date Posted: 23 Mar 2020 at 3:04am

Thanks to this post, I finally tried it this past weekend-- worked well, although in IFR cruise on autopilot I didn't need it.

Posted By: forkauto
Date Posted: 23 Mar 2020 at 11:59am

Does the AXP322 have the same option? Thanks in advance