Re: Weirdo Twinax Address Problem

[PaulMmn <PaulMmn@xxxxxxxxxxxxx>]

>Jerome Draper wrote:
>
>--- BIG snip ---
>
><Twinax is weird in that problems manifest themselves at other places in
>the line
>than where the problem exists.>
>
>Boy THAT is for sure !! Years back at a place I was working, we had a line of
>twinax that had been working FINE. 3 devices. We go to add a 4th and
>EVERYTHING
>starts going nuts. The 4th device was fine the 2nd one on the line failed,
>etc. We
>THOUGHT we had checked EVERYTHING and gave up and called IBM. Our CE came
>out and
>after about an hour he found the problem - reverse polarity (sp ?). On the
>insulator there is a mark and you should be careful to consistenly aline
>either
>the "copper" colored or "zinc/silver" colored wire/pin with this. Our
>maintenance
>folks HAD been doing this - it turned out that our supplier had managed to
>produce
>a WHOLE batch of these "mismarked" and unfortunately no on notice that the
>"notch"
>in the insulator had" changed sides in relation to this mark !!
>
>Chuck



This shouldn't be a problem as long as both ends of the cable follow the
same rule!

--Paul E Musselman
PaulMmn@ix.netcom.com


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