ASL INTERCOM VAR8 Installation Manual page 17

Audio General
DVA Bandwidth .............................................................................................................100Hz to 8kHz
THD Input to Output ...................................................................................................... <0.1% @1kHz
Crosstalk........................................................................................................................ >70dB @1kHz
Residual Noise ................................................................................................................... <78dBu (A)
S/N Line................................................................................................................................ >70dB (A)
Frequency Response (Input to Output)............................................................ 100Hz to 20kHz, –3dB
Audio Monitoring
SPL from Loudspeaker (Sounder Mode).............. ≥50dBA @ 1m from the equipment enclosure
Frequency Response (from Input through to Speaker) ............................. 200Hz to 10kHz −3dB
Gain Range Control (Front panel rotary knob) ............................................................ 0 to –63dB
Control Ports
Parallel Control Inputs ............................................................ 10xopto-isolated interfaces on VAR8-N
Changeover Fault Relay......................................................................................................................1
Maximum Global Fault Relay Contact Current Rating .............................................................. 500mA
Open Collector Drive (SPEAK NOW LED, ALL CALL LED, REMOTE FAULT OUTPUTS)..... 100mA
Remote I/O Units (BMB01) on RS485 Port.............................................................................. 6 (max)
Analogue inputs for external fault indication, volume control, programme selector, or ANS
One Volume Control may be configured to govern the same input in respect of the same output
RS232 Port (mutually exclusive use configurable via front panel)....... Host PC for configuration only
VAR8 Variants
VAR8 .................................................................................................. Base Unit, standard 8x8 Router
VAR8-E................................................................................. VAR8+EXP8 Interface Expansion Board
VAR8-N ...................................................................................VAR8+ANIC8 Intellevac Network Card
VAR8-NE ...........VAR8+ANIC8 Intellevac Network Interface Card+EXP8 Interface Expansion Board
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ANS sensors controlling the same outputs should be connected to the same BMB01 unit.
VAR8 / Variants - Installation Guide
Built-in resistor to suit voltages of +12 to +40V
Digital inputs for routing, route reset, or external fault indication
Max 12 Ambient Noise Sensor (ANS) per Router output
Issue: 01 complete, approved
Page 17 of 22
20xopto-isolated interfaces on VAR8-NE
Digital output for busy indication
One Programme Selector per Router output
Intellevac network on VAR8-N and VAR8-NE
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