TIP: Click on subject to list as thread! ANSI
echo: hs_modems
to: DAVID BOWERMAN
from: MIKE FARRILL
date: 1997-04-26 13:57:00
subject: inside wiring

-> MIKE FARRILL wrote in a message to DAVE SHINER:
->
-> DS> Basically the difference between the Cat "x" is the amount of twi
-> DS> foot(there's more to the specs if you REALLY want to know).  The
-> more DS> twists, the higher the noise rejection of the cable. Cat 3
-> is
-> DS> adequate for 10mps Ethernet, while Cat 5 is required for 100mps
-> DS> Ethernet. Shielding will attenuate the the signal when used in a
-> DS> high speed network, that's why you use UTP.
->
-> MF> Attenuate, what does that mean specifically?
->
-> Visualize the center conductor and the shield as being two plates of
-> a capacitor.  This capacitance will allow a high frequency signal
-> to impedance path to ground.
oh, I see...
-> MF> If I got a shielded cable, would I still have to do that?
->
-> It would be a good idea.  A shielded cable is not 100% impervious to
-> outside
-> signals.  Depending on the shield construction (braid, foil, whatever
-> coverage can drop well below 100%.
Well, CAT5 will be the wire I'll use then.
--- Platinum Xpress/386/Wildcat! v1.3
---------------
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