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G E N E R A L I N F O R M A T I O N
Current user manual (further in text –UM) contains description of operation and use of the
device of active information protection through power lines and ground (controlled noise generator
through mains) SEL SP-44 (further in text- device) according to purpose, is assigned for correct
installation, configuration and exploitation.
Normal operation conditions - in premises with artificially regulated climatic conditions:
ambient temperature from +5 till +45 °С, air humidity not more than 80% at the temperature of
+25°С.
PURPOSE AND OPERATION PRINCIPLE
Device SEL SP-44 is designed for protection of information containing data of federal
importance or other data with restricted access, processed by the technical means and systems, from
leakage through interferences by forming masking noise interferences.
Device SEL SP-44 – corresponds to type “B”- means of active protection of information from
leakage through induction of informational signal on the conductors, as well as ground circuits and
power supply, electro conductive line and engineered technical communications, going beyond the
controlled zone.
Factory settings of the device SEL SP - 44:
1) The minimal level of integrated noise signal is set.
2) Remote turn on of the working mode is turned off.
3) Password for settings _______________
1.
TECHNICAL CHARACTERISTICS
Device SEL SP-44 itself is a two-channel generator of masking noise signal for mains and
ground (“phase”-“ground” and “zero”- “ground”)
Functionality and setup/re-setup of the device is done under control of microprocessor with
the energy independent memory.
Diagnostics of functionality- continuous, automatic.
Indication of operation: LCD-indicator, sound and light.
1.2. Operation modes:
▪ Working mode - Generation of noise signals through mains and ground.
▪ Setup mode – re setup of levels of noise signals through mains and grounding
Device does not create interference for calculating devices and home appliances.
1.3. Main technical parameters and functions
1) Frequency diapason of generated noise signals ....................... 0.01 – 400 MHz.
2) The level of noise signals on the mains plug at a load of 50 Ohms relative to 1 mV/√kHz,
must comply with:
10 kHz ÷ 50 kHz .......................................................................... 45 - 70 dB
50 kHz ÷ 150 kHz .......................................................................... 15 - 50 dB
