Rev. 11/10/00
43
Resistance Testing – Toning the Fault
1.
Tone the faulted Inside Wire with a Tone Generator to locate its
corresponding phone jack. The fault will either be in the wire or in the jack
– at the pins.
2.
If the fault is in the jack, repair or replace.
3.
If the fault is in the wire;
a.
Use the 10K Resistance Scale to identify any shorts across Tip and
Ring.
b.
Alternately hold the
TIP
and
RING
switches
UP
to identify any Tip or
Ring shorts to ground.
NOTE
: Before replacing any Inside Wire, check for old splices , staples,
nails, nicking, loose connections, worn insulation, and any new
construction
.
Capacitance Testing – Kicking the Pair
1.
If Resistance Testing failed to detect any faults, look for Opens by
Kicking
the pair.
2.
While using the 10K Resistance Scale,
kick the pair
by alternately holding
the
TIP
and
RING
switches
UP,
and
toggling the
REV
switch. Each point on
the meter’s black scale represents approximately 50 ft. to the fault.
NOTE:
Opens on the Tip Wire are generally the cause of pair imbalances.
Also, nominal meter movements are common because of the short
length of Inside Wiring
.
3.
Use a TDR to pinpoint the exact location of the fault..
TIP
: A low range TDR (900 ft.) works best.
