Protection subscriber filter "ARB-FZA"
Certificate of the Operative and Analytical Centre of the Presidential Office of the Republic of Belarus No. BY/112 02.01.036 00011 (valid till 02.04.2019).
Protection subscriber filter "ARB-FZA" is an information protection technical tool and is designated for the prevention of voice information leakage from protected rooms by means of acoustic and electric transformations and high frequency imposition through double wired lines of analogue telephone communication, radio broadcasting lines and loudspeaker communication lines in audio and voice alarm systems, intercepting and dispatching communication lines and other systems, in terminals of which the loudspeaker is used.
Technical data
|
Value name, measurement unit |
Value |
|
Overall dimensions, mm (length x width x height) |
46 x 31 x 15 |
|
Weight, kg |
0,018 |
|
Insertion attenuation of the signal in frequency band from 0,3 to 4,0 kHz in the absence of broadcast signal on double-wire line, dB |
Not less than 65 |
|
Insertion attenuation of the signal in frequency band from 0,15 to 10,0 kHz in the presence of broadcast signal on double-wire line, dB |
Not more than 3 |
|
Insertion attenuation of the signal in frequency band from 20 kHz to 30 MH (h/f imposition), dB |
Not less than 20 |
|
Voltage between input contacts*, V |
From 4 to 100 |
|
Maximum acceptable load current*, A |
0,1 |
|
* Required parameters are ensured on double-wire line by resistance, 600 Ohm |
