Fermax PBX CAM, User And Installation Manual

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5 Technical Parameters
5.1 Electrical Parameters
Parameter Value Conditions
Minimum line current 18mA line answered
Minimum line voltage 18V line hang up
Voltage on line while guard
answers (VA characteristics) < 8V
< 12V
I = 20mA
I = 60 mA
Leakage in hang up status < 50uA U = 60V
Impedance of line termination
130R +
820R paral. 220n
line answered
Band width 300Hz – 3400 Hz 20 - 60mA
Impedance of ringing > 2Kohm 25 – 60 Hz
Sensitivity of ringing detector min. 10 – 25 V
Pulse choice 40 / 60 ms
Tone choice level 4 a 6 dB 20 – 60 mA
Tone choice sensitivity 40 dB 20 – 60 mA
Sensitivity of tone detector 30 dB 20 – 60 mA
Power supply of lighting through,
switches and heating
12Vss ± 2V , 10-12Vst ± 2V
Max. consumption of lighting
through and heating
300mA 12Vss
Max. voltage of switch contact 48V at I < 1A
Max. current of switch contact 2A at U < 30 V
Operational temperature - 20 to + 50°C
5.2 Mechanical dimensions