HT instruments QUICKLAN6050 - Manuale (Pagina 26)

QuickLAN 6050
EN - 7
5.2. 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 known length good cable (> 15m and ≤100m) to the appropriate connector.
3. Press SET key, then press
↵ enter key until the display shows “CAL CABLE”.
4. Press ▼ ▲ key until “YES” is displayed, then press ↵ enter key.
5. Press SET key to show cable length, press ▼ ▲ keys to adjust the cable length to the
exact value.
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.
5.2.1. Hidden calibrating cable length mode.
1. Press key to turn off the meter.
2. Press and hold down ▼and ▲keys then press key to turn on the meter, until LCD
shows “ ”.
Fig. 3: Hidden calibrating procedure
3. Press ▼▲key to cycle display “
” or “ ”.
4. Select “ ” and press ↵ key to enter the calibration mode.
5. Otherwise, please select “ ” then press ↵ key to escape.
5.2.2. Reset to factory default
1. Press key to turn off the meter.
2. Press and hold TEST & ▼ keys then press key to turn on the meter until LCD shows
“ ”.
Fig. 4: Reset procedure
3. Press ▲key to cycle display “
” or “ ”.
4. Select “ ” and press ↵ key to enter the reset mode.
5. Otherwise, please select “ ” then press ↵ key to escape.