The system is a technical means of information protection, designed to protect premises from on-demand through walls and engineering technical communications. The principle of operation is based on the creation of broadband acoustic and vibroacoustic masking interferences (analogue white noise or mixed with speech-like digital interference).

The system consists of a central generator unit and is connected to it by wire passive electromagnetic (vibration) or electrodynamic (acoustic) converters.

Special features of the system:

• Access to the settings menu is protected by a four-digit password variable.

• Timing of the use of noise generation and display on the LCD indicator values ​​separately for each channel (correction values ​​are not used).

• Short circuit protection for each channel.

• Monitor system status.

• Adjust the signal level.

Technical parameters:

Reproduced by the audio signal of converters from 90 Hz to 11.2 kHz

Number of constructively independent channels 2

Output power of each channel

- nominal 4 W

- maximum (up to overload) at least 9 W

Number of drives connected to each channel up to 32

Total number of inverters connected to the system up to 64

Equivalent load of one channel from 2.7 to 12.5 Ohm

Number of octave equalizer lines 7

Power supply 230 V / 50 Hz

Power consumption 30 W

Medium geometric frequencies of octave bands 125, 250, 500 Hz, 1 kHz, 2 kHz, 4 kHz 8 kHz