IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM

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IFD540 and G 796 (Aeras)

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: https://avidynelive.com/forum_posts.asp?TID=312
Printed Date: 26 Mar 2026 at 8:37pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: IFD540 and G 796 (Aeras)

Posted By: oskrypuch
Subject: IFD540 and G 796 (Aeras)
Date Posted: 12 Oct 2013 at 2:57pm

I understand that the IFD540s will not crossfill with the GNS530s, this is not the subject of this question.

The question is -- we have our GNS sending/updating its active flight plan to a dock-mounted Garmin 796. This is a simple serial input produced by the GNS, and input into the 796, using the "aviation in" format I believe.

This is a pretty common setup. Is this supported by the IFD540?

* Orest

Replies:

Posted By: AviJake
Date Posted: 13 Oct 2013 at 12:59am

Yes, that interface is completely supported by the IFD540/440. In fact, I use it every day in the Avidyne test airplane where I have some external devices on the glareshield that take data like flight plan routing in via the Aviation 232 protocol.

As part of the Plug and Play nature of the IFD series of products, we've tried to ensure that every device and protocol that the GNS units supported is also supported by the IFD. HTAWS so far is the only known exception.

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Steve Jacobson
sjacobson@avidyne.com

Posted By: oskrypuch
Date Posted: 13 Oct 2013 at 6:29am

OK, good to hear, I thought I had read about the Aera type units somewhere but could not find that explicitly in the FAQ.

I expect that there is full compatibility with JPI 830 fuel flow & distance to destination type data back/forth on 232 as well, and ASPEN on 429 & 232.

* Orest

Posted By: AviJake
Date Posted: 13 Oct 2013 at 6:50am

Yup.

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Steve Jacobson
sjacobson@avidyne.com

Posted By: LarryPetro
Date Posted: 14 Oct 2013 at 6:03am

And, Insight Avionics GEM G3 fuel flow?

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Larry Petro - Columbia 350 @ KFME

Posted By: oskrypuch
Date Posted: 14 Oct 2013 at 10:34am

Insight uses the same Shadin format on 232, so it should work as well. (not official answer)

* Orest

Posted By: AviJake
Date Posted: 15 Oct 2013 at 9:49am

Well we're not explicitly calling out support for the Insight GEM G3 since it wasn't explicitly called out by the GNS530. I haven't looked at the G3 Interface Control Document or equivalent so I'm not sure what data it's expecting to send or receive but as Orest notes, those standard 232 protocols are supported by the IFD540.

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Steve Jacobson
sjacobson@avidyne.com

Posted By: Leonard
Date Posted: 15 Oct 2013 at 8:26pm

Insight's G3 is working on my G 530.

BTW It was nice to see the 540 in action at AOPA's summit in Ft.Worth

Posted By: AviJake
Date Posted: 16 Oct 2013 at 2:16am

In other words fuel flow from the G3 is showing up on the 530? If so, can you send me a copy of how your 232 Configuration is set up on the 530? I can provide instructions on how to find that if needed.

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Steve Jacobson
sjacobson@avidyne.com

Posted By: LarryPetro
Date Posted: 16 Oct 2013 at 4:01am

Steve,

I've sent you several relevant Insight Avionics documents via private message.

-Larry

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Larry Petro - Columbia 350 @ KFME

Posted By: LarryPetro
Date Posted: 16 Oct 2013 at 4:06am

As I understand, RS232, which the G3 and GNS 530W use, is an electrical standard. I wonder whether the data formats supported by each instrument are compatible so that the system does work.

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Larry Petro - Columbia 350 @ KFME

Posted By: LarryPetro
Date Posted: 16 Oct 2013 at 4:10am

> Insight's G3 is working on my G 530.

That's good news. If the IFD540 fully implements GNS 530W functions, then I would expect the fuel flow to display on the IFD540 too. I hope Steve can verify that.

Thanks.

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Larry Petro - Columbia 350 @ KFME