Laying Down the Wires in the Jack
Of all the
procedures you'll be following on NetDay, laying down the
wires is one of the most important to do exactly right.
The EIA 568A specification is
the installation standard that makes it possible for Category
5 cable to transmit data at high speeds. If you don't
follow the spec PRECISELY, the cable may still transmit
data but at a much slower rate. Here's how to follow the
track of A and B jacks in each schoolroom, and note them
on your cut sheet. You'll label the
the wires down in the jack exactly as shown. Different-colored
wires are NOT interchangeable, and blue wires are NOT interchangeable
with blue/white, orange with orange/white, etc. Note: The
jack in your NetDay kit may look somewhat
different from the one pictured here, but the same
rule still applies.
the wires centered inside the jack. Skewing them will slow
the rate of data transmission.
the cable sheath within 1/8 inch of the jack.
the wires further than necessary to lay them down in the
jack. Untwisted wires don't transmit data as quickly. Also,
if the wires are not all color-coded,
you risk mixing them up. A good way to keep from untwisting
too much is to hold down the wires inside the jack with
one finger while you use the other hand to pull apart the
end you want to lay down. Extra twists are OK.
more cable sheath than necessary (about 1 1/2 to 2 inches)
to do the wiring. Stripping too much sheath will slow the
rate of data transmission.