On Fri, 28 May 1999, Bob Drzyzgula wrote: > FWIW, the latest issue of Circuit Cellar (June, 1999) > contains an article by Jan Axelson entitled "Designing > RS-485 Circuits". She does a pretty good job of explaining > the issues surrounding signalling & slew rate, termination, > and cable length, and how they affect attenuation, > reflections, etc. Well worth the cover price. Her articles were the sole reason to pick up The MicroComputer Journal -- always interesting, relvant, and useful. Check out her site: Lakeview Research -- http://www.lvr.com/ - j