On Fri, May 28, 1999 at 08:39:44AM -0400, John Esposito wrote:
...
> My question is:  is my impression of RS232 unfounded?  If so, why?  Has
> anyone used RS485 in the way I want to use it?  If so, did you use a
> terminating resistor as each node to minimize reflections?  Any other
> information you could provide would be very helpful

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.

--Bob

--
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Bob Drzyzgula                             It's not a problem
bob@drzyzgula.org                until something bad happens
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