DETAILED CPM-700 PROCEDURE
REI
CPM-700
28
6.
Test other outlets by plugging in and comparing the bar graph
level and audio sound. As you approach a VLF device the signal
level on the bar graph will increase. Listen for your known sound
source.
7.
To test other wires,
cables, or phone lines for
the presence of VLF
signals, including video:
Connect the TVLF
Adaptor to the probe
and clip onto the suspect
pair of wires.
NOTE: Dimmer controls and defective fluorescent lamps may cause
background hum and buzz due to AC power line harmonics. These can be
reduced by removing or replacing the defective fluorescent lamp or by
turning dimmer controls on full. Usage of the audio FILTER will also help
reduce low frequency audio hum and buzz. Simply turning off the noisy
circuit may also turn off the bug.
NOTE: VLF frequencies normally will not pass through a separate power
transformer; therefore be sure to check all outlets since they may be on
different circuits (power phases).