PDA

View Full Version : BREAK timing at the receiver


zano_villa
November 8th, 2018, 02:34 AM
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.