Southwire M555TP Instrucciones De Operación página 4

Operation
Testing a Data Cable Terminated with RJ45 Connectors cont.
Note that a Cross Over cable will test differently than a normal straight
through cable.
Below is the sequence for a properly wired cross over cable
(transmit pairs cross over to receive and receive pairs cross over to transmit):
Full Duplex
(all 4 pairs cross over)
3-6 1-2
Half Duplex
(Only the 1-2 and 3-6 pairs cross over)
3-6 1-2
6. When testing a shielded cable, the "S" LED will flash green if the shield
is connected at both ends of the cable. If the shield is shorted to a wire
within the cable, the "S" LED will flash red.
NOTES:
The tester verifies that the cable being tested is wired to either
T568A or T568B wiring standards. Both standards are electrically the same.
The only difference between the two standards is the color of the wires used
on pairs 1-2 and 3-6.
The tester will not detect a split. A split occurs when there is perfect continuity,
but the connections on both ends of the cable are such that the wires on two
or more pairs are interchanged with each other.
A split can cause crosstalk between the signals being sent through the cable.
S S
7-8 4-5
S S
4-5 7-8
5
Operation
Testing an Installed Data Cable
1. Connect a known good patch cable (included) to the wall port or patch panel
of the cable being tested.
2. Connect the other end of the patch cable to the RJ45 port on the tester.
3. Detach the remote from the bottom of the tester.
4. Connect another known good patch cable (included) to the RJ45 port on
the remote.
5. Connect the other end of the patch cable to the wall port or patch panel
at the other end of the cable being tested.
6. Press the TEST button.
7. Refer to steps 5 and 6 Testing a Data Cable Terminated with
RJ45 Connectors to interpret the results.
Patch Panel
Detachable
Remote
Patch Cable
6