upgrading and repairing PCs technicians ... - 400 Bad Request

You can buy all the previous tools for a single price from many different
network-products vendors. If you are working with a network
with a wiring closet, you will also want to add a punchdown
tool to your kit.
Before you create a “real” cable of any length, follow these procedures
and practice on a short length of cable. RJ-45 connectors and
bulk cable are cheap; network failures are not.
Follow these steps for creating your own twisted-pair cables:
1. Determine how long your UTP cable should be. You’ll want
to allow adequate slack for moving the computer and for
avoiding strong interference sources. Keep the maximum distances
for TP cables (listed later in this chapter) in mind.
2. Roll out the appropriate length of cable.
3. Cut the cable cleanly from the box of wire.
4. Use the wire stripper to strip the insulation jacket off the
cable to expose the TP wires; you’ll need to rotate the wire
about 1 1/4 turns to strip away all of the jacket. If you turn it
too far, you’ll damage the wires inside the cable.
Caution
Wire Pairing for Twisted-Pair Cabling 279
Don’t strip the UTP wires themselves; just the jacket!
5. Check the outer jacket and inner TP wires for nicks; adjust
the stripper tool and repeat steps 3 and 4 if you see damage.
6. Arrange the wires according to the AT&T 268B/EIA 568B
standard listed previously.
7. Trim the wire edges so the eight wires are even with one
another and are slightly less than 1/2” past the end of the
jacket. If the wires are too long, crosstalk (wire-to-wire interference)
can result; if the wires are too short, they can’t make
a good connection with the RJ-45 plug.
8. With the clip side of the RJ-45 plug facing away from you,
push the cable into place. Verify that the wires are arranged
according to the EIA/TIA 568B standard before you crimp the
plug on to the wires. Adjust the connection as necessary.
9. Use the crimping tool to squeeze the RJ-45 plug on to the
cable. The end of the cable should be tight enough to resist
being removed by hand.