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Automated Lighting, 2nd Edition by Richard Cadena

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APPENDIX F: Data Termination

 

A data terminator is a device that should be used at the end of every DMX512data run to prevent signal reflections that could cause degradation and signal errors. Without a terminator, devices may behave erratically and unreliably. The longer the data run and the more devices connected to it, the more critical termination becomes.

How to Build a Data Terminator

Using a male XLR connector (3- or 5-pin, depending on the device to be terminated), solder a 120 ohm ¼ W resistor between pins 2 and 3 (and pins 4 and 5 if using a 5-pin connector). Plug the terminator into the last DMX512 output in the data run.

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