Hello, I've been looking for the documentation of the standards of EIA-485-A. I mean the official document, I think it's called "APPLICATION GUIDELINES FOR TIA/EIA-485-A" or something like "ANSI/TIA/EIA/485-A-1998". Maybe these are two separate documents. Someone have this in electronic format and can send it to me? Also, I have interest in the "USITT DMX512/1990". Thank you very much, Brusque ----------------------------------------------------------------- Edson Brusque C.I.Tronics Lighting Designers Ltda Research and Development Blumenau - SC - Brazil Say NO to HTML mail www.citronics.com.br ----------------------------------------------------------------- -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics