Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!rex!ukma!morgan
From: morgan@ms.uky.edu (Wes Morgan)
Newsgroups: comp.sys.att,u3b.tech
Subject: Do-it-yourself Ethernet loopback for 3b2 NI cards
Keywords: loopback   easy   testing
Message-ID: <1991Apr5.162556.29107@ms.uky.edu>
Date: 5 Apr 91 16:25:56 GMT
Organization: The Puzzle Palace, UKentucky
Lines: 22

If you need to make a terminating adapter for the NI card that
will still allow a loopback test during boot diagnostics, here's
the pinouts:

 -  DB-15 male connector
 -  Connect pin 3 to pin 5
 -  Connect pin 9 to pin 6
 -  Connect pin 10 to pin 12

I've been using this for several days, with no problems.  DGMON
passes the board with no problem.  If there is a potential prob-
lem with this adapter, please let me know.

This has the added benefit of fitting inside the door of the 
3B2/310; the Starlan AUI adapter will not, and I don't like
exposing my cards to the world.....8)

-- 
 morgan@ms.uky.edu    |Wes Morgan, not speaking for|     ....!ukma!ukecc!morgan
 morgan@engr.uky.edu  |the University of Kentucky's|   morgan%engr.uky.edu@UKCC
 morgan@ie.pa.uky.edu |Engineering Computing Center| morgan@wuarchive.wustl.edu
    Curator of the benchmark archives at wuarchive.wustl.edu <128.252.135.4>