HIKVISION IPC-4300H - 2.3.21. Cable Search (Optional); The Blue Cable Identifier requires two AAA batteries.; While the cable tracer is receiving an audio signal from the Tester, there may be interference from adjacent or crossing cables. However, the cable that makes the loudest noise is the one that is connected to the meter.

UM IPC-4300H 040320NA 113
2.3.21. Cable Search (Optional)
Connect the test or BNC cable to the UTP Port or the Cable Scan
(Video Out) Port at the bottom of the device.
Click to begin and choose a number on the screen to adjust
audio settings.
Figure 113, Cable Search Screen
Use the Blue Combination Cable Identifier and the Tester’s copper
pointer to touch all the cables in the bundle.
The cable that gives off the loudest sound is the one that is
connected to the Tester. Press + or – on the Blue Cable Identifier
to adjust the volume.
The Blue Cable Identifier requires two AAA batteries.
While the cable tracer is receiving an audio signal from
the Tester, there may be interference from adjacent or
crossing cables. However, the cable that makes the
loudest noise is the one that is connected to the meter.