Masterclock D232 Manual do Utilizador descarregar pdf (Página 21)

Raisecom Technology Co., Ltd

Ring not detect voltage: ≤15 V

2W input impedance: normal and not ring status: 600Ω

2W input impedance: ring or abnormal status: 1000K Ω

Gain from 2W to 4W: 0±0.5 db

Frequency characteristic from 2W to 4w: 0±0.2 db

Gain from 4W to 2W: -3.5±0.5 db

Frequency characteristics from 4W to 2w: 0±0.2 db

Return loss: 30-40 db

Balance: 60-70 db

Common-Mode Rejection Ratio: 60-70 db

Power supply Rejection Ratio: 30 db

Idle channel noise: 75 db

5.2.11. Interface standard of FXS user-board with polarity reversal

function (RC3000-SUB-DSR)：

Feed voltage: DC –48 V or DC 24 V

Loop current: 18-24 mA standard value 20 mA

Feed ring voltage: AC 65±10 V 25 Hz

Ring stop time: 200 ms

2W input impedance: 200+680Ω

Gain from 2W to 4W: 0±0.5 db

Frequency characteristic from 2W to 4W: 0±0.2 db

Gain from 4W to 2W: -3.5±0.5 db

Frequency characteristic from 4W to 2W: 0±0.2 db

Return loss: 30-40 db

Balance: 60-70 db

Common-Mode Rejection Ratio: 60-70 db

Power Supply Rejection Ratio: Vcc: 30 db Vbat: 30 db

Idle channel noise: 75 db

5.3. Power supply

Input voltage: DC -48V, tolerance range -36V～ -72V

AC 220V, tolerance range 85～265V

Module power: general≤20W, maximum≤40W

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Masterclock D232 Manual do Utilizador Página 21