No there is no documentation for addressing fixtures with the dmx op 192. But if you take 192(total number of channels avail) and divide that by 12 (fixture buttons) you get 16 correct? So the dmx op must block fixtures in 16's. So your 1st fixture button will control channels 1-16. 2nd fixture button controls 17-32, etc. You really need to download both items in our DMX 101 section. They will both help you out.
http://www.elationlighting.com...MainId=1&Category=26Sincerely,