Loop Devices Test Results; Leakage Stress Test; Setting Up A Leakage Stress Test - Fluke 990DSL User Manual

POTS Testing and Fault Location
4
The POTS Toolbox

Loop Devices Test Results

To run the Loop Devices Test, select it on the POTS Toolbox and press K.
Upon completion of the test, the tester displays a result screen that lists each
loop device and indicates whether or not it was detected on the test pair. A
Y
indicates that the device was detected, and an indicates that the device was
N
not detected.

Leakage Stress Test

The Leakage Stress test is a continuous resistance test that uses a higher test
voltage than normal, in order to "punch through" a potential metallic wire fault
that has oxidized over time. During normal resistance testing, this type of fault
typically does not show up on a spare pair. However, it does gradually appear
under sustained application of C.O. battery voltage after being cut into service
as a supposedly "good" pair.

Setting Up a Leakage Stress Test

To set up a Leakage Stress test, select the test on the POTS Toolbox and press
). The test has one setup parameter, which is listed in Table 4-6.
D(
Setups
Table 4-6. Leakage Stress Test Setup Parameter
Parameter Settings (default in bold)
Leakage Fault Pass Threshold 500 ke
4-37