2n Door intercom 2N Helios - Manual, 1322 v3.0 Manual de usuario descargar pdf (Pagina 68)

Technical Parameters

5.1

5.1 Technical Parameters

Telephone Parameters

Parameter

Value

Conditions

Minimum required off-hook line current

15 mA

Off-hook

Minimum required on-hook line voltage

20 V

Hang-up

DC voltage drop (off-hook)

< 8 V

< 16 V

I = 25 mA

I = 50 mA

Lead current while hang-up



U = 60 V

Off-hook AC impedance



115 nF parallel

20 to 60 mA

Return loss

> 10 dB

20 to 60 mA

Bandwidth

300 to 3500 Hz

20 to 60 mA

Ringing impedance





25 to 50 Hz

Ringing detector sensitivity

10 to 20 V

25 to 50 Hz

Time of response to ringing

Variable

Pulse dialling

40 / 60 ms

20 to 60 mA

DTMF level

-6 and -8 dB



20 to 60 mA

DTMF detector sensitivity

Min. -40 dB

20 to 60 mA

Dial tone detector sensitivity

Min. -40 dB

350 - 500 Hz

Busy tone detection speed

Variable

350 - 500 Hz

Continuous tone detection speed

Variable

350 - 500 Hz

Ringing tone detection speed

Variable

350 - 500 Hz

Overvoltage protection  common mode

1000 V



Overvoltage protection  between A, B

conductors

1000 V



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2n Door intercom 2N Helios - Manual, 1322 v3.0 Manual de usuario Pagina 68

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