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Path: utzoo!watmath!clyde!floyd!harpo!decvax!decwrl!rhea!mother!hughes
From: hughes@mother.DEC (Gary Hughes - CSSE uVAX & AI Systems Group)
Newsgroups: net.lan
Subject: DEC ethernet transceivers
Message-ID: <6512@decwrl.UUCP>
Date: Tue, 27-Mar-84 11:01:38 EST
Article-I.D.: decwrl.6512
Posted: Tue Mar 27 11:01:38 1984
Date-Received: Wed, 28-Mar-84 02:00:11 EST
Organization: DEC Engineering Network
Lines: 22

Somebody asked about braid terminators in the H4000 installation kit. They  
are small metal pins that you insert in the cable after you have drilled 
the hole but before attaching the H4000. They should be in a small box or 
plastic container in the drill kit. They are easy to overlook.

Having installed several ethernets using the installation kit, the only 
trouble I encountered was on on transceiver where the engineer incorrectly 
installed the braid terminator, shorting the cable.

If you are using a DEUNA (the DEC Unibus ethernet controller) it will
detect things like this at initialisation time. The board has a status
display that gives a good indication of the nature of the fault.The other
nodes on the ethernet will also fail at init time if you have a fault like
this. 

There is also a transceiver test box that you can use if you don't want to 
connect to the host.

Gary Hughes
UUCP:   ...{ decvax | allegra | ucbvax }!decwrl!rhea!mother!hughes
ARPA:      hughes%mother.DEC @purdue-merlin.ARPA
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