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-   DMX512 Discussion (http://www.rdmprotocol.org/forums/forumdisplay.php?f=10)
-   -   BREAK timing at the receiver (http://www.rdmprotocol.org/forums/showthread.php?t=1292)

zano_villa November 8th, 2018 02:34 AM

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

ericthegeek November 8th, 2018 08:19 AM

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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