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Ease ARINC 429 bus debugging

Posted: 06 Feb 2012 ?? ?Print Version ?Bookmark and Share

Keywords:ARINC 429? triggering? decoding?

The differential 12.5 kbps and 100 kbps ARINC 429 serial buses are widely used today in a broad range of commercial aircraft including many Boeing and Airbus aircraft, as well as future Chinese commercial aircraft currently under development. Due to the harsh electrical environment of commercial aircraft, testing the quality of received and transmitted signals is very important. The primary measurement tool that engineers and technicians use today to test the signal integrity of serial buses is an oscilloscope. But capturing and measuring the electrical characteristics of ARINC 429 signals have been a difficult and tedious process using conventional analog or digital oscilloscopes. Setting up a scope to trigger and synchronize on specific transmitted or received words often requires an external synchronization signal or guessing at a specific trigger holdoff setting. And then to determine the message transfer information of captured and displayed communication packets/words requires a commonly used visual "bitcounting" technique, which is slow and prone to errors.

Agilent's InfiniiVision 3000 X-Series oscilloscopes provide ARINC 429 triggering and decoding, as well as eye-diagram mask test capability to help you debug your ARINC 429 buses faster.

View the PDF document for more information.

Originally published by Agilent Technologies at as "Debugging ARINC 429 serial buses".

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