GAI-Tronics 10959-903 Manual - Página 8

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Models 10959-903 and 10959-904 Wall-Mount Audio Messenger Interface
Termination
PCBA Label
600-
L1
OHM
600-
L2
OHM
AUDBUS2 L1
AUDBUS2 L2
AUDBUS1 L1
AUDBUS1 L2
PGND
RS485 INT GND
RS485 INT−
RS485 INT+

Control Output

Terminal block TB4, labeled SYSTEM, is located on the termination PCBA. Connect the contact
closure output terminals TB4-7 and TB4-8 to the page control input on the addressable amplified speaker
or stanchion broadcast module.
Termination
PCBA Label
EXT DATA GND
EXT DATA −
EXT DATA +
FLT
REBOOT
GND
AUD ACT 1
AUD ACT 2
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Table 1. Audio Output Connection
Internal
Terminal
Function or ACT Description
Pin-Out
600-ohm audio pair to distribution amplifier cabinet,
TB3-1
stanchion broadcast electronics module, addressable
TB3-2
amplified speaker, or other 600-ohm compatible device
TB3-3
no connection
TB3-4
TB3-5
no connection
TB3-6
TB3-7
no connection
TB3-8
TB3-9
no connection
TB3-10
Table 2. Control Output Connection
Internal
Terminal
Function or ACT Description
Pin-Out
TB4-1
no connection
TB4-2
no connection
TB4-3
TB4-4
no connection
TB4-5
no connection
TB4-6
no connection
TB4-7
isolated solid state relay, closed during AMI broadcast
On resistance = 30 ohms
TB4-8
Pub. 42004-442D
Page 6 of 17