TELETECH TX 916, Руководство оператора

Страница: 14 / 16

pg. 14

At the customer end, identify the line pair and connect the
PROBE test leads, then press key;

Disconnect the PROBE and connect the Resistance Bridge
and locate the fault (as per the instrument’s manual).
Oscillator
Resistance
Bridge
Fault
Locator
Three Wire Test
The Three Wire Method for resistance fault location is used when
there is a “good” pair available in the cable and the other two wires
of the “faulty” pair have fault resistance between them, or both have
fault resistance to ground. If only one wire of the pair is faulty, the
Two Wire Method can be used. The Three Wire test is performed as
follows:

Connect the Blue Oscillator leads to a good pair and the
White Oscillator lead to one wire of the faulty pair;

Connect the PROBE’s blue leads to the good pair at the
Far End;

Press SHORT (WITH GROUND) to connect the
Blue leads and the White lead together;

Disconnect the PROBE and carry out fault location using
a Resistance Bridge.
Oscillator
Resistance
Bridge
Fault
Locator
Pulse Echo Test (PET/TDR)
The SHORT / OPEN mode can be used to calibrate a PET (TDR)
for length of line to Oscillator.