IFD540 & Stec-55x Glideslope Wiring
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: http://forums.avidyne.com/forum_posts.asp?TID=1134
Printed Date: 02 May 2024 at 5:31am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: IFD540 & Stec-55x Glideslope Wiring
Posted By: jonesronc
Subject: IFD540 & Stec-55x Glideslope Wiring
Date Posted: 21 Aug 2016 at 5:31pm
| I have the above with an NSD-360A HSI installed in April; GS arms but won't couple. HSI GS indications normal. ILS & GPS with vertical guidance both don't couple. I thought at first I just didn't have the parameters just right, but after more than a dozen precision approaches I've definitely got the flying part down. It looks like the 540 has 3 GS output wires and the Stec wants 4. Has anybody had this problem or know of a likely fix? Thx. |
Replies:
Posted By: rolfe_tessem
Date Posted: 21 Aug 2016 at 10:37pm
| I had a 55x installed on my Bonanza with a 540 a few months ago by Stellar Avionics in Chester, CT. You might want to give them a call. I have a King HSI, although I can't imagine why that would make a difference. Mine works flawlessly after one initial glitch was fixed. |
Posted By: wookie
Date Posted: 23 Aug 2016 at 10:23am
|
Does your 55x have autotrim? BH ------------- BH |
Posted By: rolfe_tessem
Date Posted: 23 Aug 2016 at 3:42pm
Yes it does and it works perfectly! Rolfe
|
wookie wrote:Posted By: wookie
Date Posted: 23 Aug 2016 at 4:58pm
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Reason I ask is that there are some installations where auto trim is required for GS coupling. Not an issue here, it's something else. BH ------------- BH |
Posted By: jonesronc
Date Posted: 24 Aug 2016 at 11:08am
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My current aircraft doesn't have autotrim, but neither did my previous twin with a -30, and it coupled fine. Al at Avidyne tech support said go from GAMA 429 to GAMA 429 with Graphics/INT on the ARINC config page, but the aircraft couldn't hardly keep course with that. S-Tec said go with the plain ARINC 429 format. Which format are y'all using? Ron |
Posted By: rolfe_tessem
Date Posted: 25 Aug 2016 at 9:45am
I'm sure my avionics shop knows, but I haven't a clue. I'm due in there shortly for a Sandia Quattro and will ask... Rolfe |
Posted By: wookie
Date Posted: 25 Aug 2016 at 11:45am
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All the 429 affects is GPS steering. The '30 only supports altitude hold as a vertical mode.... it does not have GS coupling FWIW. BH ------------- BH |
Posted By: jonesronc
Date Posted: 26 Aug 2016 at 11:22am
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Regarding -30, come to think of it, you're right - I would set trim for Ground Speed/2 *100 = fpm and down I'd go; I was confusing that with a TruTrak I was flying at the time. Regarding ARINC, why did Avidyne think it was an ARINC issue when I called them? Ron |
Posted By: wookie
Date Posted: 28 Aug 2016 at 3:45pm
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If the 429 isn't connecting, the symptom would be that the gpss would just wander around. There are several flavors and speeds on 429 -- I'm not conversant, sorry. bh ------------- BH |
Posted By: jonesronc
Date Posted: 04 Oct 2016 at 3:41pm
| Fixed the problem; one of the high density pins on P1001 had lost its lock and was pushing in when the radio was loaded into its tray. Reset the pin and all works now. yay |