Newsgroups: comp.dcom.lans
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: RS232 cable
Message-ID: <1990Oct30.175832.27809@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <2404@gould.doc.ic.ac.uk>
Date: Tue, 30 Oct 90 17:58:32 GMT

In article <2404@gould.doc.ic.ac.uk> epl@doc.ic.ac.uk (Edward Peter Lennon) writes:
>2-Where did I get the figure of 50 foot maximum distance for RS 232
> communications from.

That's the max it is actually specced for, using garden-variety cable.
Low-capacitance cable helps.  Also, there is an important distinction
between what is *guaranteed* to work and what you can usually get away
with.  RS232 runs of hundreds of meters are out of spec but usually work;
modern receivers and transmitters are mostly much better than the minimum
given in the spec.
-- 
"I don't *want* to be normal!"         | Henry Spencer at U of Toronto Zoology
"Not to worry."                        |  henry@zoo.toronto.edu   utzoo!henry