ASL INTERCOM Var8 Installation Manual page 12

Connectors
NETWORK DOWNSTREAM (optional)
Signal
SCRN
DXP
DXN
BUS1+
BUS1−
BUS2+
BUS2−
BUS3+
BUS3−
Cabling connector: 9-way female clamp terminal (CAMDEN CTB92HE/9)
NETWORK UPSTREAM (optional)
Signal
GND
DXP
DXN
BUS1+
BUS1−
BUS2+
BUS2−
BUS3+
BUS3−
Cabling connector: 9-way female clamp terminal (CAMDEN CTB92HE/9)
INPUT 1 and 2: Balanced Audio Inputs with Hardware Bypass
Signal
DXP
DXN
0V
IN+
IN−
V+
PTT−
PTT+
ACO
SN
Cabling connector: 10-way terminal block (METWAY 120A11110)
VAR8(EN54) and Variants – Installation Guide
Do not connect to cable screen; see Figure 2 (page 16).
Data Bus+ (EIA RS485 38400 baud)
Data Bus− (EIA RS485 38400 baud)
Audio bus Loop 1 (+20 dBu analogue audio)
Audio bus Loop 1
Audio bus Loop 2 (+20 dBu analogue audio)
Audio bus Loop 2
Audio bus Loop 3 (+20 dBu analogue audio)
Audio bus Loop 3
Do not connect to cable screen; see Figure 2 (page 16).
Data Bus+ (EIA RS485 38400 baud)
Data Bus− (EIA RS485 38400 baud)
Audio bus Loop 1 (+20 dBu analogue audio)
Audio bus Loop 1
Audio bus Loop 2 (+20 dBu analogue audio)
Audio bus Loop 2
Audio bus Loop 3 (+20 dBu analogue audio)
Audio bus Loop 3
Microphone Data+ (EIA RS485 19200 baud)
Microphone Data− (EIA RS485 19200 baud)
0 V supply
Balanced audio input +VE / Level: 0 dBu / Max. Sensitivity: −20 dBu / Impedance: 10 kΩ
As above but −VE connection
+V supply (18-36 V)
Press To Talk switch input (internally pulled up to +5 V by 4k7 Ω)
Press To Talk switch input (internally pulled up to +5 V by 4k7 Ω)
All Call Only LED. Open collector drive, 100 mA max
Speak Now LED. Open collector drive, 100 mA max
U-0450-1818.doc – Issue: 01 complete, approved
Page 12 of 20
Description
Description
Description