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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.unix.questions
Subject: Re: RS232 cables and DSR/RTS/etc
Message-ID: <6453@brl-smoke.ARPA>
Date: Sun, 20-Sep-87 23:14:32 EDT
Article-I.D.: brl-smok.6453
Posted: Sun Sep 20 23:14:32 1987
Date-Received: Mon, 21-Sep-87 04:43:37 EDT
References: <8998@brl-adm.ARPA> <650@ora.UUCP> <880@mcgill-vision.UUCP> <14824@topaz.rutgers.edu>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 6

In article <14824@topaz.rutgers.edu> ron@topaz.rutgers.edu (Ron Natalie) writes:
>It is not generally a good idea to hook up pin-1.  Especially true when
>you're running from different power sources.

You could hook up just one end of it.  However, shielding of these
cables is not usually necessary.