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LeCroy 3034 - how to set up ARINC429 data display?

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peter-h:
I have the option unlocked, selected in the channel, but no way to get any analysis (1s and 0s :) ) showing up.

Nothing in the manual, either. Some stuff online, but only advertising material. Not showing how to set it up.



ARINC429 has no separate clock or CS. It has two signals which are complementary, so only one of them should be needed, for a scope display.

How is one supposed to set this up?

I know that a couple of years ago this scope was used for SPI decoding, by somebody else. IIRC this required one to set up a zoom region and it would decode data within that region. This doesn't seem to do anything either.

Martin72:
Hi,


--- Quote ---I have the option unlocked
--- End quote ---

Interesting, it must be a hidden feature on this scope series - The Arinc429 decode option normally starts with waverunner 9000....

peter-h:
So, how do you set it up on a 9000? Do you need two probes, what do you do about the clock and the CS, etc?

There is stuff like this online
http://cdn.teledynelecroy.com/files/appnotes/testing_debugging_avionics_arinc_429_milstd1553.pdf
but I can't find anything on how to actually set it up.

2N3055:
What Martin says is that that scope shouldn't have ARINC429 as an decode option at all.
Avionics family of protocols start at HDO4000A series (and only basic ones for that one).

If that option was enabled by "user generated code" it might be that scope accepted it in license validation part, but since it doesn't have actual decode code for it, it called SPI decoder by mistake. Something is wrong.

For ARINC you need only one signal (A, B, or differential and setup for that choice), and you need to chose word format (data encoding). Threshold, maybe parity and baud rate. That's all.

Your scope is in a weird state.


peter-h:
Do you mean it is not showing required config options?

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