GAI-Tronics 10959-201 and 10959-203 Wall-mount Audio Messenger Interface - Manual (Page 10)

Pub. 42004-403F
M ODEL 10959-201 AND -203 W ALL -M OUNT A UDIO M ESSENGER I NTERFACES P AGE 8 of 20
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Audio
Terminal block TB3, labeled
AUDIO
is located on the termination PCBA. It provides connections for
audio inputs and outputs, and for local RS-485 data connections. Audio connections to a public address
amplifier require shielded pair conductors. Local Data connections are used with the I/O control module
and/or Zone Interface Module.
Table 4. Audio Assignment
Termination
PCBA Label Internal
Terminal Pin-Out
Function or ACT Description
600 ohm L1 TB3-1 Page output audio to public address amplifier,
ADVANCE or Zone Interface module audio
600 ohm L2 TB3-2
AUDBUS2 L1 TB3-3 Internal audio bus and ADVANCE, ARC, or party
audio from AMI
AUDBUS2 L2 TB3-4
AUDBUS1 L1 TB3-5 Internal audio bus and ADVANCE party audio to
AMI
AUDBUS1 L2 TB3-6
PGND TB3-7 Power supply ground
RS485 INT GND TB3-8
RS485 INT − TB3-9 Data/Gnd connection for I/O control module
RS485 INT + TB3-10
System
Terminal block TB4, labeled S
YSTEM
is located on the termination PCBA. It provides connection for
system applications such system reboot, fault indicator and external data communications.
Table 5. System Assignment
Termination
PCBA Label Internal
Terminal Pin-Out
Function or ACT Description
EXT DATA GND TB4-1 No connection
EXT DATA- TB4-2 Data connection for ADVANCE or external CPU
control
EXT DATA+ TB4-3
FLT TB4-4 Active high signal representing a fault with AMI
REBOOT TB4-5 Momentary active low signal to reboot AMI
GND TB4-6 Ground reference for FLT and REBOOT.
AUD ACT 1 TB4-7 Isolated SSR. Closed during AMI page.
On resistance = 30 ohms
AUD ACT 2 TB4-8