John Breeden wrote:
[EMAIL PROTECTED] wrote:
[EMAIL PROTECTED] wrote on 03/24/2005 06:42:24 PM:
Now, how do you know if the wiring is truly Cat3? Just because the
raw wire is Cat3 means nothing if they wrapped it around a few
fluroescent lights... ;)
Acually, the first demo of 10baseT at Interop after the standard was
passed was 100 meters of DIW (now cat3) wrapped around a fluroescent
lamp and a 5 horsepower electric motor.
I can verify from experience it won't work in the presence of electric
arc welders :-)
The original ieee 10baseT standard stated DIW (now cat3) wiring,
fluroescent lights had no effect on the ber (unlike, at the time token
ring). Originally, 110 blocks were used for termination, at least by
ATT (ATT SystemMax wiring). The original standard assumed voice/data
in the same bundle, (ie: ring voltage also had no effect on the ber).
BTW: You could bring down token ring over unshielded wire with a radar
gun (we used to do it to IBM at Interop :-)
.electrician wired a cluster with reverse ground once, i put cat3 25
pair cable *near* (it less than 1', connected to nothing on that end),
then 50' away as i hooked up a 8 port multiplexer it roasted (smoking)
in my lap. that was exciting.
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