Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!aecom!glen
From: glen@aecom.yu.edu (Glen M. Marianko)
Newsgroups: comp.dcom.lans
Subject: Pin-outs for AUI 802.3 vs. ethernet
Message-ID: <2654@aecom.yu.edu>
Date: 8 Dec 89 04:44:29 GMT
Organization: Albert Einstein College of Medicine, NY
Lines: 16

I've been trying to track down the difference in the AUI cable design
between AUI cables for use with 802.3 equipment vs. Ethernet I and II
equipment.  One spec I saw shows the shield/drain wire connected to
pin 4 for 802.3 yet all the 802.3 AUIs I saw have it on pin 1.

Also, according to ISO 8802-3 and ANSI/IEEE 802.3 bible, shield 
is on pin 1 yet each sheath of shielding for each pair is also 
supposed to appear separately on the AUI connector.  Nobody ever 
does this in practice.  Instead all the TP sheilds are twisted 
together with the drain wire in the middle thus shorting all the 
shields to the drain.  Is this ok?  
-- 

-- Glen M. Marianko  Manager, LAN Services  Glasgal Communications, Inc.
   151 Veterans Drive  Northvale, New Jersey 07647  201-768-8082
   glen@aecom.yu.edu - {uunet}!aecom!glen (Courtesy of AECOM & unaffiliated)