DMX Testers

[musht]

Take it your following Clive`s design, think his instructions are pretty clear on his website:

 

http://www.emanator.demon.co.uk/bigclive/dmxtest.htm

 

If your following Ben/Brian`s circuit , the Anode (+) of an LED is the longer of the 2 leads and one each goes to each pin, 2 & 3 , the Cathode (-) goes via resistor to remaining pin.

 

Hope that helps.

[Andrew C]

However, the tester doesn't give a red=fail type output. One LED glows on a data+ the other on data-, changing very quickly. You can get some idea of lots of highs or lows, sort-of, by the overall colour.

[Tomo]

All I want is to make a tester that goes red for error in DMX green for good DMX signal.

This is only possible by using a microcontroller of some kind.

 

To detect "Good" DMX, you have to read the actual data (& framing) and check the timings of the various sections of each packet.

 

And once you've got that, you might as well add a bit more to the display so you can look at actual levels...

[Ynot]

Take it your following Clive`s design, think his instructions are pretty clear on his website:

 

http://www.emanator.demon.co.uk/bigclive/dmxtest.htm

That's all our testers are - though heed Clivey's caveat...

This is a useful little keychain-sized device that can visually display the presence and polarity of data on a DMX lighting control network. It won't prove that the data is valid, and it won't detect glitches or signal echo's, but it's still very useful

[midi-rakete]

Hi,

 

if you are looking for an active DIY DMX-Tester look on my web site. It´s about 95% ready. DMX-Projects

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