The active information protection device against leakage through power supply and grounding circuits (adjustable power line noise generator) SEL SP-44 is designed to protect information processed by technical means and systems by generating a masking noise signal in the power supply and grounding circuits. The device is a dual-channel digital generator with a built-in device for injecting noise signals into the power supply and grounding circuits directly through the power plug.
Device capabilities and features:
Digital autonomous control and monitoring of settings with protection against unauthorized access and output of information on a built-in liquid crystal display.
The use of two uncorrelated noise generators for the "phase"-"ground" and "neutral"-"ground" circuits eliminates the possibility of information signal interception for both differential and common mode connection schemes.
The presence of independent level regulators for low-frequency and high-frequency ranges allows optimizing the interference spectrum for electromagnetic compatibility while maintaining sufficient masking effectiveness.
The device has the highest class of resistance to impulse noise and allows prolonged operation under conditions equivalent to a short circuit.
The built-in counter records the total operating time of the noise generator with values stored in protected non-volatile memory.
During operation, the device continuously performs self-testing and in case of malfunction emits audible and visual signals.
Main technical characteristics: Generated noise signal range 10 kHz – 400 MHz Number of independent noise generators 2 Entropy quality coefficient of noise not less than 0.9 Subrange for noise level adjustment 0.01 – 5 MHz Subrange for noise level adjustment 5 – 400 MHz Noise level adjustment range in each subrange not less than 20 dB Built-in LCD screen size 50 x 15 mm Normal operation indication LED, text Fault mode indication LED, text, and sound (buzzer) Control device switch, wired remote control Generator power supply from 220 V 50 Hz AC mains Dimensions 72 x 80 x 42 mm Weight no more than 1.1 kg