HT instruments QUICKLAN6050 - Manuale (Pagina 27)

QuickLAN 6050
EN - 8
6. OPERATING
6.1. TEST CABLES
The TEST function tests the attached cable based on the cable’s compliance with the
parameters stored in the tester for the selected cable.
To test a cable, perform the following procedure:
1. Select cable type under test.
2. Connect the cable under test to the QuickLAN and to the remote identifier.
3. Press TEST key.
Remote identifier is necessary due to obtain measurement with high accuracy level.
For twisted pair cables, when QuickLAN checks for a
cable remote identifier unit (ID) at the other end of the
cable and a pass condition exists, the LCD will display
the following information: good cable, remote unit ID#1
detected.
m
If testing coaxial cable with a termination, the tester
displays the total resistance of the cable wires and the
termination.
Ω
Only coaxial cables must be unterminated for the tester to display the cable’s length. If a
coaxial cable is open looks just like an unterminated cable, then a length measurement
that is less than the known cable length would indicate a possible open in the cable.
The tester if a failure is detected, additional information can be viewed with the ▼ ▲ keys.
The failure messages refer to individual wires rather than pairs of wires. The TEST mode
failure messages are described in following table.
Failure Display Description Failure Display Description
Miswire
Display the
incorrect wiring
of the end
connectors.
Pair Length
m
The length of
the pairs
within the
same cable
are abnormal
different.
Open
m
Display the
broken wire
and the
distance to the
break.
Split Pair
A portion of
the cable
assembled
has split
pairs or a
poor quality
cable.
Tab. 1: Test failures
A short greater than 0Ω, will cause display a length greater than the actual distance to the
short. The tester uses 0Ω to calculate distance to a short.