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Old May 22nd, 2008   #5
Join Date: Feb 2006
Posts: 430
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You should always terminate the end of the DMX line with 120 ohms across pins 2 & 3. This has been standard reccommened practice since the beginning with DMX512.

In some cases you could get away without doing it, but there are many times where not having proper termination will cause all kinds of nasty issues with erratic behavior.

With RDM, you MUST have the line terminated in order to work at all most of the time.
Scott M. Blair
RDM Protocol Forums Admin
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