System
- Dynamic range: 80 dB (1kHz, THD <1%)
- Call signal (send): +2.8 mA
- Call signal threshold (receive): +2.4 V DC
- Supply voltage: +30 V DC (12 V to 32 V)
Intercom line
- Impedance: 350 ohms (1 kHz), 2.2 kOhms (DC)
- Audio level: nom. -18 dBu, max. +4 dBu
Switch Mode Power Supplies (BS 216/181/286)
- Mains voltage range: 100 - 240 V AC, 50/60 Hz
- Output voltage: +30 V DC (+/- 5%)
- Max output power: 45 W
Mic Preamps
- Headset mic impedance: 200 ohms
- Gain: 40 - 60 dB (adjustable internally)
- Presence filter: +6dB @ 5 kHz
- Frequency response: 200 Hz - 15 kHz (-3 dB)
- Power to electret mic: +9 V DC
Headphone Driver Amps
- Max. output level: 10.6 Vrms (at 200 ohms)
- Max. output power: 0.5 Wrms (at 200 ohms)
Side Tone
- Rejection: 0 - 30 dB adjustable
Buzzer
- Max. SPL: 100 dBA
Aux Inputs (BS 216/286)
Input Impedance:
30 kOhms (line level)
4.6 kOhms (mic level)
Nominal Input Level:
-18 to +6 dBu (line level)
-38 to -14 dBu (mic level)
Max. Input Level:
+22 dBu (line level)
+2 dBu (mic level)
Phantom Power: +30 V DC (mic level selected)
0 dBu defined as 775 mV rms into open circuit
ASL reserves the right to change specifications without prior notice.