The "Ravnina-3" system is designed to prevent information leakage via acoustic channels (through ventilation systems), to prevent information leakage via vibroacoustic channels (through window openings, heating systems, doors, walls and other building structures). The "Ravnina-3" masking noise generator (version 4x1) is structurally 4 independent "Ravnina-3" generator units placed in a compact 1U case for installation in a 19'' equipment cabinet. It is ideal for building large vibroacoustic protection systems with monitoring and control functions transferred to a single central control panel. The system meets the information security requirements imposed on technical equipment installed in dedicated premises up to and including category 1.
Advantages of the system
The improved design and special technology for manufacturing vibration emitters allows minimizing the level of parasitic noise at protected objects and at the same time ensuring compliance with speech information protection standards in accordance with their protection category; The use of a modern element base has made it possible to achieve significantly smaller weight and size parameters compared to existing analogues; Quality control and spectral density control of masking noise in real time with status indication; The use of new technologies has made it possible to significantly increase the number of connected vibration emitters to 320 "light" VP-3 and VP-4 or up to 30 "heavy" VD-80 and VD-120. System composition
Masking noise generator "Ravnina-3" (version 4x1); "Light" piezoceramic vibration emitters VP-3 and VP-4, designed to protect window panes and light partitions; "Heavy" electrodynamic vibration emitters VD-80 (medium power) and VD-120 (high power), designed for noise reduction of heating pipes, walls and ceilings; Acoustic emitters AS-Sh (for open mounting) and ASP (built-in) for noise reduction of air ducts, vestibules and doorways; Mounting equipment: a set of fasteners for a frame, a pipe, plasterboard, a wall, a mounting box. Characteristics
Main tech. characteristics of the masking noise generator "Ravnina-3" (version 4x1)
Noise signal
analog
Range of operating frequencies, Hz
90 – 11 200
Entropy quality factor of the noise signal, not less than
0.97
Operating time counter
built-in, digital
Fault indication
audio-visual
Number of independent noise channels, pcs.
8
Total number of universal outputs
16
Noise signal level adjustment
on each of the 16 outputs
Maximum number of emitters when connected in parallel:
- "light" vibration emitters VP-3 / VP-4
320 / 320
- "heavy" vibration emitters VD-80 / VD-120
32 / 32
- acoustic emitters AS-Sh / ASP
32 / 32
Product power supply
220V/50Hz network
Continuous operation time:
- at ambient temperature below 35°C, not less than, h
- at ambient temperature above 35°C, not less than, h
- break before continuing work, not less than, h
24
8
0.5
Power consumption power, not more than, VA 40 Ambient temperature:
- during operation, °C
- during transportation and storage, °C
5...40
-35...50 Overall dimensions of the generator, mm 430*45*380 Generator weight, kg 2