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Old March 25th, 2015   #2
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Join Date: Aug 2008
Posts: 358

In older versions of DMX (USITT DMX512) you could send variable length packets. I don't remember if E1.11 disallows that or not, but it's always been a bad practice. In any case, the controller must maintain the minimum break to break time, so the behavior you show is incorrect.

I'm not sure if this is an Enttec problem, or an issue with the USB Host Software. Assuming you're talking about the OLA RDM Responder tests, a few of the OLA developers read this forum, so hopefully they can give you some guidance.

One other note, from the scope image, it looks like the responder may be enabling its line driver too soon. The responder should not start responding for at least 176us, and based on the slightly higher voltage levels I think it may be enabling the line drivers immediately after the request is finished.

Last edited by ericthegeek; March 25th, 2015 at 12:30 PM. Reason: Acronym Spelling Correction
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