BREAK timing at the receiver - E1.20 RDM (Remote Device Management) Protocol Forums

zano_villa · November 8th, 2018

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

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.

November 8th, 2018	#1
zano_villa Junior Member Join Date: Jan 2014 Location: Treviso, Italy Posts: 13	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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November 8th, 2018	#2
ericthegeek Task Group Member Join Date: Aug 2008 Posts: 379	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.