Page 14 - FL-20A Instruction Manual
Model FL-20A Cable Fault Locator
the short from the red probe, and then find its distance from the blue
probe. A summary screen showing the distance of the fault from each
probe will display. The total of the two distances should equal the length
of the test cable. By pressing MORE, the operator may view the rated
accuracy of the results as well as a suggested cable area to remove. The
full report may be printed.
When the setting is OFF, the FL-20A performs only a partial test, find
-
ing the distance of the short from the red probe and then pausing to dis-
play a report. You may press BACK to terminate the test, but the test’s
accuracy is, at this point, unknown. If you instead press NEXT, the
FL-20A will then proceed to ind the distance of the short from the blue
probe. A summary screen showing the short’s location from the red and
blue probes, as well as the rated accuracy of the test and the suggested
trim area, will display.
The default for Full Test is ON. Experienced operators working with a
particular cable type are sometimes confident that a partial test is accurate
and choose it to reduce test time. However, this is not recommended
without the advice of a Clinton technician.
Lock Test Voltage
When this setting is ON, the Shorts Max Voltage setting cannot be
changed at test time, although the voltage setting is displayed during the
test.
Shorts Max Voltage
This setting is found on the second page of the Shorts Parameters set-
tings. This is the maximum voltage that will be applied during the shorts
test. An entry of 10.0 represents 10KV DC. To change the setting,
press the existing value to view a keypad. Enter the new value, using the
decimal point and press OK.
If this value is set too high, damage to the cable may result.
If the maximum voltage is set too low, a high voltage short may not arc
and cannot be located.
Shorts Max Voltage can be changed at the time of test if Lock Test Volt-
age is OFF.
Opens Parameters
Access the Open Parameters settings from the Settings menu. They
apply to opens tests that will be done. They are saved in memory even
when the FL-20A is off. The default settings are usually optimum for
opens testing. It is not advisable to change them, except the Auto Reverse
Leads setting, without factory advice.
