EXFO CableSHARK P3 VF/DSL Cable Qualifier User Manual
Page 204
VF / DSL Cable Qualifier
192
12.1.1.5 Initial RFL Testing
From the Main Menu, pressing Function button F1 (CABLE TESTS) will bring the user to the CABLE TESTS
pop-up menu. Choosing RESISTIVE FAULT LOCATION (RFL) from the pop-up menu activates the RFL
test.
The CableSHARK will measure the combinations of TIP-RING, RING-GROUND, and TIP-GROUND using
the CableSHARK voltage and resistance tests to determine if RFL is possible on the faulty pair selected. If
the measured resistance is <10 Mohms, or the voltage is > 2 VDC or negative, there may be a fault on the
line.
Any fault that measures less than <3.3 Mohms must be repaired.
If there is a voltage on the line, the RFL test will display the following message: “RFL isolation test is not
complete, live voltage detected.
” At this point the user should verify that the station battery has been
disconnected on the pairs under test.
MAIN
MENU
E
CHG
WARNING
RFL isolation test is not complete, live circuit detected
!
F
Black
Red Green
CABLE
TESTS
Yellow
Blue Green
F
IGURE
12.1.1.5A
–
RFL
W
ARNING
M
ESSAGE FOR
L
IVE
C
IRCUIT