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DMX512 Discussion Discussion and questions relating to DMX512-A and DMX512/1990.

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Old November 8th, 2018   #1
zano_villa
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Join Date: Jan 2014
Location: Treviso, Italy
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Default BREAK timing at the receiver

Hello,
This is the my question: can a DMX receiver consider a signal low level lower than 88us as a BREAK?
If the answer in NO, this is a framing error (stop bit error): in this case may the receiver accept previous slots of the frame?
DMX512-A 9.1 says it must only discard improperly framed slot data and all following slots in the packet.
Am I right?


Thank you
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Old November 8th, 2018   #2
ericthegeek
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Default

It's not a requirement in the standard, but in general it's best to also discard the previous slots.


The most common cause of framing errors is contact bounce while plugging/unplugging a cable. Because contact bounces tend to happen in bursts, it's likely the prior slots are also corrupt even if they look properly framed.
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