ASL INTERCOM V2000 - PC Requirements

V2000 – Installation Guide
U-0623-0291.docx – Issue: 04 complete, approved
Page 33 of 40
7.4 LSZDC Line Surveillance Interface Card
Current Consumption (average, without changeover, 24 V supply)
Normal ................................................................................................................................................. 7.5 mA
Loop Return Mode ................................................................................................................................ 39 mA
Current Consumption (average, with relays operating, 24 V supply) ................... 39 mA with one isolation relay
39 mA with standby changeover
63 mA with isolation and standby changeover
Maximum Amplifier Output Power ....................................................................... refer to amplifier specifications
Surveillance Tones .................................................................. low frequency (20 Hz) / high frequency (20 kHz)
Loudspeaker Line Surveillance ................................................ DC line surveillance, loop return or impedance
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single (A) or dual (A&B) speaker circuits
Earth Leakage Current Fault Threshold ............................................................................. 2 mA (configurable)
Audio Processing ........................................................................... gain, gate and 10-band parametric equaliser
Dimensions (H x W x D) / Weight .................................................................. 64 mm x 30 mm x 121 mm / 145 g
7.5 V2000-STBY Standby Interface Card
Current Consumption ................................................................................................................................... 0 mA
Maximum Standby Input ...................................................................................... refer to amplifier specifications
Standby Amplifier Interface .............................. standby audio input (up to 100 V RMS) / 0 dBu low level audio
‘daisy-chain’ wiring from mainframe to mainframe
Dimensions (H x W x D) / Weight .................................................................... 26 mm x 90 mm x 118 mm / 60 g
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Impedance monitoring: refer to ASL for availability.