Did I ever mention the time we wired the bank with Cat3 unshielded
twisted-pair? This should have never worked, but it actually performed
quite well....
1. Data center was about two blocks down the street from the bank. Ran
above-ground twinax lines down the alley to the bank. (Also had two
lightning arresters on that exterior line. Each one degrades the signal
slightly)
2. Installed Andrews PASSIVE utp patch panel, one balun on the end of
the long twinax line, then into the patch panel.
3. Ran Cat3 utp from patch panel to all terminal locations.
4. balun at each terminal.
Only one terminal was flaky, but it was obviously the longest utp run we
installed... Everything worked fine until we upgraded the S36 to AS400.
The 5360-D put out a stronger signal than the 400.
Tgif,
Eric DeLong
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of James Lampert
Sent: Friday, January 23, 2009 4:11 PM
To: Midrange Systems Technical Discussion
Subject: Re: How to terminate a twinax termination for a 3487 dumb
terminal
Dave Murvin wrote:
Is there anything else I can check? The device shows as very on
pending and the cursor is on the upper right of the screen. It is
like it is not there. I have checked the connections and all seems
OK. I will see if I can find another real twinax cable (instead of
the bailins) to check the connection.
While I did say that Twinax tends to be very forgiving of improper
termination, the same cannot be said of its reaction to being hooked up
with anything other than real Twinax cable.
My own experience with baluns (not spelling) and either phone cable or
Cat5 has been as uniformly unreliable as my experience with real Twinax
cables (even with weird topology) has been uniformly reliable.
--
James H. H. Lampert
Touchtone Corporation
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