3M 2273 사용자 설명서

Perform a battery test; then with the Transmitter off, plug the direct
connect cable into the front panel jack.

If fault is a shorted pair, connect Red clip to tip and the Black clip to ring.

If the fault is a cross (two pairs involved), connect the Red clip to crossed
conductor of one pair and the Black clip to the crossed conductor of the
other pair.

If the fault is a ground, connect the Red clip to the faulted conductor and
the Black clip to ground.

Press           to turn the Transmitter on and select Ohms mode 

 to verify

the fault.  Press twice more to select the Tone mode 

.

Press 

 to change the high output level.

Press 

 to turn the Receiver on.

Press         to select Tone mode 

 .

Connect a toning coil to the Receiver accessory jack.

Press 

 to select the low toning frequency (577 Hz).

Move the toning coil along the cable and find a peak signal then
press 

 to adjust the Receiver gain.

Press 

 to adjust the speaker volume as needed.

Follow the cable with the toning coil. An aerial fault is located at the
point where the tone stops or drops off sharply.