V.
CALIBRATING CABLE LENGTH
The cable characteristics parameter is now defined by the
factory settings for the cable selected. But cables are coming
from different batches or manufacturers the characteristic
variances will be at up to 20%, to cause deviations in length
measurement. To obtain more accurate measurements,
calibrate the tester to the specific cable under test.
For proper calibration connect the cable under test directly to
the tester not through a patch cable. To calibrate the tester to
the currently selected cable, perform the following procedure.
1. Select cable type under test.
2. Connect a good cable of known length ( > 15m and
≦
100m)
to the appropriate tester connector.
3. Press SET key, then press
enter key until the display shows
“ CAL CABLE ”.
4. Press ▼ ▲ key until “
” is displayed, then press
enter
key.
5. Press SET key to show cable length, press ▼ ▲ key to adjust
the cable length to the exact length.
6. Press
Key. These cable parameters are stored and will
remain in memory even if the test tool is turned off. All future
measurements for this cable type are compared to these new
parameters until another cable is selected or another calibration
is performed.
Note
:
1. Hidden calibrating cable length mode.
Press key to turn off the meter.
Press and hold down ▼and ▲keys then press
key to turn on
the meter, until LCD shows “
”.
Press ▼▲key to cycle display “
” or “
”.
Select “
” and press
key to enter the calibration mode.
Otherwise, please select “
” then press
key to escape.
2. Reset to factory default.
Press key to turn off the meter.
Press and hold TEST & ▼keys then press
key to turn on the
meter, until LCD shows “
”.
Press ▲key to cycle display “
” or “
”.
Select “
” and press
key to enter the reset mode.
Otherwise, please select “
” then press
key to escape.
VI.
OPERATING
A). 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
procedures.
1. Select cable type under test.
2. Connect the cable under test to the appropria connector on
