Check out ABtech's Lighting System's technical expose on
 "The Anatomy
of DMX12"  I think you'll find the information there to be very helpful.

http://www.abtec.demon.co.uk/index2.htm


>        I was wondering if you could send me the info yoy have on
>DMX512, protocol
>specs, timing diagrams, schematics, hardware details, anything really.
>Thanks for any info. TTYL