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Author Topic: Serial Decode Error on Rigol DHO812  (Read 258 times)

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Offline NautilusoTopic starter

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Serial Decode Error on Rigol DHO812
« on: January 01, 2025, 04:52:43 pm »
Decoding a 1200 baud 7 bit Event 1 stop bit serial protocol via a Rigol DHO812 gives me an "S" and a "P". I guess they are errors but does anyone know exactly what they mean? Thanks and best wishes for 2025!
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Offline mwb1100

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Re: Serial Decode Error on Rigol DHO812
« Reply #1 on: January 01, 2025, 06:26:14 pm »
The P indicates a parity error and the S indicates a stop bit error.

I think you want 8n1 setting (8 data bits).
« Last Edit: January 01, 2025, 06:32:37 pm by mwb1100 »
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Offline NautilusoTopic starter

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Re: Serial Decode Error on Rigol DHO812
« Reply #2 on: January 02, 2025, 11:37:43 am »
I did various tests - the protocol is 8E1, I had never seen one. Now everything works thanks. :-+
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Offline mwb1100

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Re: Serial Decode Error on Rigol DHO812
« Reply #3 on: January 02, 2025, 06:53:33 pm »
Quote from: Nautiluso on January 02, 2025, 11:37:43 am
the protocol is 8E1, I had never seen one.

I can see that now in the screenshot.  I don't think I have ever come across a device actually using parity in RS232 comms; I can't recall ever having used anything other than 8n1.
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