ASL INTERCOM VAR8-ACU Series Installation Manual page 15

Audio General
THD Input to Output .............................................................................................................. <0.1 % @1 kHz
Crosstalk................................................................................................................................ >70 dB @1 kHz
Residual Noise ............................................................................................................................ <78 dBu (A)
S/N Line ......................................................................................................................................... >70 dB (A)
Frequency Response (Input to Output) ................................................................... 100 Hz to 20 kHz, –3 dB
Audio Monitoring
SPL from Loudspeaker (Sounder Mode)...................... ≥50 dBA @ 1 m from the equipment enclosure
Frequency Response (From Input through to Speaker) ................................... 200 Hz to 10 kHz −3 dB
Gain Range Control (Front panel rotary encoder) ................................................................ 0 to –63 dB
Audio Routing
Number of Concurrent Host Routes ................................................................................................ 20 (max.)
Number of Concurrent ACU-Instigated Routes ...........................................................................................50
Override per Output......................................................................................................................... 40 (max.)
Control Ports
Digital Inputs
Number of Digital Inputs .............................................................................................................. 10 on VAR8
Interface.................................................. Opto-isolated with built-in resistor to suit voltages of +12 to +40 V
Others
Open Collector Drive (SPEAK NOW LED, ALL CALL LED) .............................................................. 100 mA
Changeover Fault Relay................................................................................................................................1
RS485 Port ....................................................................................................................................................1
RS232 Port ....................................................................................................................................................1
VAR8-ACU Variants
VAR8-ACU .....................................................................Base Unit, standard 8x8 Audio Control Unit Router
EXP8..................................................................................................................... Interface Expansion Board
Network
Network Audio Channels ................................................................................................................... 1, 2 or 3
Standard ...............................................................................................................................................RS485
Data Rate.......................................................................................................................................38.4 kbaud
Distance between Nodes..............................................................................................................1 km (max.)
Network Control Response Time (Fire Alarm trigger to DVA initiation) .........................................<1 second
Fault tolerance................................................Any single open or short circuit can be detected and isolated
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The RS232 port is internally used for system networking. It may be temporarily disconnected from the network, and connected to a
Host PC for configuration purposes.
VAR8-ACU and Variants - Installation Guide
Maximum Global Fault Relay Contact Current Rating: 500 mA
For mutually exclusive use by Host PC for configuration, Intellevac Network
Issue: 02 complete, approved
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Up to 6 Remote I/O Units (BMB01)
Factory fit option ordered with VAR8-ACU
20 on VAR8-E
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