Technical Parameters - 2N Helios Force Installation Manual

4.1 Technical Parameters

Telephone Parameters
Minimum required off-hook line current
Minimum required on-hook line voltage
DC voltage drop (off-hook)
Lead current while hang-up
Off-hook AC impedance
Return loss
Bandwidth
Ringing impedance
Ringing detector sensitivity
Time of response to ringing
Pulse dialling
DTMF level
DTMF detector sensitivity
Dial tone detector sensitivity
Busy tone detection speed
Continuous tone detection speed
Ringing tone detection speed
Overvoltage protection – common mode
Overvoltage protection – between A, B conductors
Other Electric Parameters
Switch – max. voltage
Switch – min. voltage
Switch – max. current
Backlight and amplifier – rated voltage
Backlight and amplifier – max. voltage
Backlight – current consumption
Power amplifier - current consumption
Technical Parameters
Value
15 mA
20 V
< 8 V
< 16 V
< 25 μA
220 Ω + 820 Ω
115 nF parallel
> 10 dB
300 to 3500 Hz
> 2 kΩ
C = 1 μF
10 to 20 V
Variable
40 / 60 ms
-6 and -8 dB
± 2 dB
Min. -40 dB
Min. -40 dB
Variable
Variable
Variable
1000 V
1000 V
48 V AC, DC
9 V AC, DC
2 A AC, DC
12 V
14 V
Up to 150 mA
Up to 100 mA
4.1
Conditions
Off-hook
Hang-up
I = 25 mA
I = 50 mA
U = 60 V
20 to 60 mA
20 to 60 mA
20 to 60 mA
25 to 50 Hz
25 to 50 Hz
20 to 60 mA
20 to 60 mA
20 to 60 mA
350 - 500 Hz
350 - 500 Hz
350 - 500 Hz
350 - 500 Hz
8 / 20 μs
8 / 20 μs
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