GAI-Tronics 10962-001, 10962-002 AMI Redundant Controller Modules - Manual (Page 8)

Pub. 42004-708L2B
Model 10962-001 and 10962-002 AMI Redundant Controller Modules Page: 8 of 17
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System Terminals
The system terminals are used for data, audio and power connections as follows:
RS-485 The RS-485 terminals are for a serial data connection to the AMI. This RS-485 data line
allows the ARC to monitor the operating status of the AMI and control the playing of the
AMI alarm tones and messages.
Connect the RS-485 +, –, and GND terminals to the E XT D ATA terminals on the AMI.
Observe (–) and (+) polarity when connecting the data line. Refer to Figure 6.
N OTE : When using the RS-485 data connection, the RS-232 cannot be used and vise
versa.
VOX 1 The VOX 1 terminals are for sampling the audio output of the AMI. When the AMI is
playing a message, these terminals verify that audio is actually being generated from the
AMI. Connect the VOX 1 terminals to either the 600-ohm or 33-ohm audio output of the
AMI using a twisted pair cable. Refer to Figure 6. (33-ohm audio is shown.)
VOX 2 The VOX 2 terminals are reserved for future use. Do not make any wiring connections to
these terminals.
12-24V DC The 12–24 V dc terminals are used to connect power to the unit. As labeled, the ARC can
operate from 12 to 24 V dc. Power the AMI from the same voltage as the ARC. Observe
(–) and (+) polarity when connecting the power. Connect the GND terminal to earth
ground. Refer to Figure 6.