i4Technology BugHunter Professional BH-03 Expert, Руководство по эксплуатации, Страница: 21 / 25

21
a) b) c)
Pic. 20. Digital transmitter in work
In this case decrease the sensitivity by pressing «▼» button to the level on which the blue graph
of peak values doesn’t “go into overdrive”. You may also fold down the antenna completely or
partially. Continue your search considering the peak values graph.
- If there is an obvious local maximum of unknown emission, the device can be switched to the
sound feedback mode. The tonal characteristic of a sound will change if the wireless mic (“bug”) is
near. In some cases, when approaching to the “bug”, the sounds a room is filled up with can be even
heard from the internal speaker or earphones. GSM/GPRS-transmitters can be easily identified by
specific crack. In the sound feedback mode “bugs” can be found by ear alone, without looking at the
screen, if you are skilled enough.
2.3.3.3 “Security” mode
The device is switched to the “security” mode when there are no unknown emissions in a room
and the implicit control of the situation is needed, for example during negotiations.
When switched into “security” mode, the device assesses surrounding radio environment and
memorizes the signal level, then device screen turns off.
If some new source of signal appears, for example a cell phone turns on to transmit the
information or a “bug” activates after long pause in data transmission, etc., the device will alarm you
about this (the screen will turn on or the device will vibrate or produce a sound). When the alarm cause
is removed (cell phone is switched off or removed from the room, a “bug” is deactivated), graphic,
acoustic and vibro indications will automatically switch off.
Notification:
1. The opportunity to adjust the device is limited in “security” mode. To make adjustments
(vibration intensity, filters switching on/off, etc.) you need to switch the device to the “search” mode
first.
2. Sensitivity and vibroindication engagement threshold adjustment is performed automatically
when switching to the “security” mode.