Pub. 42004-404F
M
ODEL
10959-207
AND
-208
R
ACK
-M
OUNT
A
UDIO
M
ESSENGER
I
NTERFACES
P
AGE
8 of 20
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Audio
The terminal block labeled
AUDIO
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
Metalwork
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
No connection
RS485 INT
−
TB3-9
Data connection for I/O control module
RS485 INT +
TB3-10
System
The terminal block labeled
S
YSTEM
provides connection for system applications such system reboot,
fault indicator and external data communications.
Table 5. System Assignment
Metalwork
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
Ethernet
The Ethernet connector is reserved for future implementation.
