encoder compatibility
Printed From: Avidyne
Category: Avidyne General
Forum Name: SkyTrax Series ADS-B Receivers & Transceivers
Forum Description: Topics on the Avidyne SkyTrax 978 MHz Receivers & Transceivers
URL: https://avidynelive.com/forum_posts.asp?TID=1155
Printed Date: 26 Mar 2026 at 4:34pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com
Topic: encoder compatibility
Posted By: cardinal driver
Subject: encoder compatibility
Date Posted: 21 Sep 2016 at 7:21am
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I having a Skytrax 100 installed, and the avionics shop reports that The current encoder installed in the aircraft is not compatible with the Skytrax Serial Altitude input needed so we will need to replace the existing encoder with a unit that is capable of outputting serial altitude data. The blind encoder was installed in 2013, it is a Transcal model SSD120-30N. I checked before installing this model if it would be compatible with the IFD-540, and it was. I'm surprised that the encoder would not be compatible with the Skytrax 100. Can anyone enlighten me? TIA
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Replies:
Posted By: Ibraham
Date Posted: 21 Sep 2016 at 9:16am
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The link is for install manual, you can check Appendix D for encoder compatibility http://www.navworx.com/documents/TSO%20ADS600-B%20Installation%20Manual%20240-0008-00-39.pdf
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Posted By: AviSimpson
Date Posted: 21 Sep 2016 at 9:29am
Do you have an AXP340 installed? ------------- Simpson Bennett Avidyne Corporation Product Manager |
cardinal driver wrote:Posted By: pburger
Date Posted: 21 Sep 2016 at 9:41am
| Your encoder only has a gray code (parallel) output. The IFD-540 can accept either RS-232 serial or gray code (parallel) input, so your encoder will work with the IFD-540. I suspect the Skytrax 100 requires a RS-232 signal which your encoder doesn't have. |
Posted By: AviSimpson
Date Posted: 21 Sep 2016 at 9:45am
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The IFD540 can also accept 429 altitude data. If an AXP340 is installed you can use the altitude output from pin 6. ------------- Simpson Bennett Avidyne Corporation Product Manager |