Connections - ASL INTERCOM VAR8 Installation Manual

2

Connections

Network Interface Upstream
Signal
GND
DXP
DXN
BUS1+
BUS1−
BUS2+
BUS2−
BUS3+
BUS3−
Cabling connector: 9 way female clamp terminal (CAMDEN CTB92HE/9)
Network Interface Downstream
Signal
SCRN
DXP
DXN
BUS1+
BUS1−
BUS2+
BUS2−
BUS3+
BUS3−
Cabling connector: 9 way female clamp terminal (CAMDEN CTB92HE/9)
Audio Inputs 1 and 2
Signal
DXP
DXN
0V
IN+
IN−
V+
PTT−
PTT+
ACO
SN
Cabling connector: 10 way terminal block (METWAY 120A11110)
VAR8 / Variants - Installation Guide
GND ISO. Connection for cable screen.
EIA RS485 38400 bits per second (+).
EIA RS485 38400 bits per second (-).
Audio bus Loop 1 (+20dBu Analogue audio).
Audio bus Loop 1.
Audio bus Loop 2 (+20dBu Analogue audio).
Audio bus Loop 2.
Audio bus Loop 3 (+20dBu Analogue audio).
Audio bus Loop 3.
Connection for cable screen.
EIA RS485 38400 bits per second (+).
EIA RS485 38400 bits per second (-).
Audio bus Loop 1 (+20dBu Analogue audio).
Audio bus Loop 1.
Audio bus Loop 2 (+20dBu Analogue audio).
Audio bus Loop 2.
Audio bus Loop 3 (+20dBu Analogue audio).
Audio bus Loop 3.
EIA RS485 19200 baud (+).
EIA RS485 19200 baud (-).
0V supply.
Balanced Audio Input 0dBu
As above.
+V supply (18-36V).
Press To Talk switch input (internally pulled up to +5V by 4k7Ω).
Press To Talk switch input (internally pulled up to +5V by 4k7Ω).
Open collector drive, 100mA max. All Call Only LED.
Open collector drive, 100mA max. Speak Now LED.
Issue: 01 complete, approved
Page 12 of 22
Description
Description
Description
Max. Sensitivity: −20dBu Impedance: 10kΩ