ASL INTERCOM VAR8 Installation Manual page 14

Enhanced A/B Audio Outputs
The enhanced outputs provide simpler connectivity than the standard outputs, but with the same
functionality. Separate connections are provided to drive A & B amplifiers from each output.
Signal
OUT'n'-A+
OUT'n'-A−
OUT'n'-B+
OUT'n'-B−
Cabling connector for outputs 1 to 4: 9 way terminal block (METWAY 120A11109)
Cabling connector for outputs 5 to 8: 8 way terminal block (METWAY 120A11108)
Control Contacts
Signal
C'n'+
Cn'−
Cabling connector: 10 way terminal block (METWAY 120A11110)
RS485 Serial Port
Signal
GND
DXN
DXP
Cabling connector: 3 way terminal block (METWAY 120A11103)
CAN Bus
Signal
GND
CANL
CANH
Cabling connector: 3 way terminal block (METWAY 120A11103)
RS232 Serial Port
Signal
GND
TX
RX
RTS
CTS
CTRL
Cabling connector: 2 x 3 way terminal block (METWAY 120A11103)
Fault Relay Contacts
Signal
NO
COM
NC
Cabling connector: 3 way terminal block (METWAY 120A11103)
VAR8 / Variants - Installation Guide
A output. Balanced Audio Output, 0dBu @ 600Ω impedance.
As above.
B output. Balanced Audio Output, 0dBu @ 600Ω impedance.
As above.
Opto-isolated input + connection.
As above but –ve connection. In-built resistor to suit voltages of +12 to +40V.
0V Reference.
EIA RS485 9600 baud.
EIA RS485 9600 baud.
0V Reference.
Controller Area Network (L).
Controller Area Network (H).
0V Reference.
EIA RS232 Transmit data (9600 baud).
EIA RS232 Receive data (9600 baud).
EIA RS232 Request to Send.
EIA RS232 Clear to Send.
EIA RS232 Data Terminal Ready.
Volt free contact – Normally Open
Relay Common
Volt free contact – Normally Closed
Issue: 01 complete, approved
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