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Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!decvax!decwrl!dec-rhea!dec-dosadi!binder
From: binder@dosadi.DEC (Wherever you go, there you are.)
Newsgroups: net.micro
Subject: Re:  APPLE ][ to KAYPRO on a null modem
Message-ID: <1565@decwrl.UUCP>
Date: Tue, 9-Apr-85 09:49:31 EST
Article-I.D.: decwrl.1565
Posted: Tue Apr  9 09:49:31 1985
Date-Received: Thu, 11-Apr-85 02:24:16 EST
Sender: daemon@decwrl.UUCP
Organization: DEC Engineering Network
Lines: 7

It's generally considered poor form to connect pin 1 of a DB25 cable when
making a null modem.  Pin 1 is the SHIELD ground, and is sometimes connected
to mains ground in the terminal or whatever.  You can get serious ground
loops by hooking up pin 1.

Cheers,
Dick Binder   (The Stainless Stee Rat)