SEL SP-157 SHAGREN acoustic and vibroacoustic protection system of speech information

SEL SP-157 SHAGREN system is a technical mean of information protection, intended for protection of premises from soliciting through walling and engineered technical communications.

Operating principle is based on forming wideband acoustic and vibroacoustic masking noise interferences (analogue white noise or mixed with a digital speech-like interference). The system consists of a central generator unit and passive electromagnetic (vibration) or electrodynamic (acoustic) transducers connected to the generator by wire.

Special features of the system:
• Entrance to the setup menu is protected by a 4-digit password variable.
• Short-circuit protection for each channel.
• Monitor the status of the system.
• Adjusting the emission level.

Characteristics:
Diapason of noise signals reproducted by transducers	from 90 Hz to 11.2 kHz
Number of constructively independent channels	2
Output power of each channel	4 W (nominal) / at least 9 W (until overload)
Quantity of transducers connected to each channel	up to 32 (up to 64 total to the system)
Quantity of the octave lines of the equalizer	7
Power supply	220 V / 50 Hz
Power consumption	30 W
Mid-geometric frequencies of octave bands	125, 250, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz
Dimensions of generator SP-157G	225x150x75 mm / 3.0 kg
Dimensions of vibro-transducers SP–157VP	d40?35 mm / 0.05 kg
Dimensions of acoustic transducer SP–157AS	100?70?35 mm / 0.25 kg