GAI-Tronics 69268-001 User Manual

Pub. 42004-614L2C

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

69268-001

Amplifier Zone Interface II PCBA

Confidential ity Notice

This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics.
GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,
and such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.

General Information

NOTE: If the 69268-001 Amplifier Zone Interface II (AZI II) board is being installed in a system that

does not currently have an AZI II, the GAI-Tronics Service Department must be contacted to modify the
system configuration. If the AZI II Board is being installed as a replacement for an existing AZI II,
follow the instructions contained in this manual. The 69268-001 AZI II board is designed to be installed
in the 10457 Series Card Rack Assembly and is used to interface between a 69254 Series or 69440 Series
Master Control Unit (MCU) and up to twelve power amplifiers.

How to Use the Assembly/Model

Application

The AZI II Board serves the following functions:

• Performs audio switching of the backplane page resources to the power amplifiers. There are two

page resources or buses available in the 10457 Series card rack.

• Performs audio switching from the backplane Supervisory Tone resource to the power amplifiers.

The Supervisory Tone permits health check monitoring of the power amplifiers’ speaker loops. The
supervisory tone incorporates gain control.

• Provides an audio path from the backplane Fail-safe Bus Tone to the power amplifiers.

• Provides normal/emergency output level selection for each of the two backplane page resources.

Each level is manually adjustable through the front bezel. The MCU controls output level selection.

• Provides manually-adjustable gain on two of the twelve outputs. The Amplifier 6 and Amplifier 12

outputs incorporate gain control.

• Provides RS485 communication to external Snaptrack™ modules.

GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA

610-777-1374  800-492-1212  Fax: [phone]

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Hardware Configuration

Figure 1. The Amplifier Zone Interface II PCBA - 69268-001

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Interfaces

Figure 2 illustrates the location, method of connection, and part numbers associated with the installation
of the AZI II board.

Figure 2. AZI II PCBA (69268-001) Interfaces

P1

P1 interfaces the AZI II board to the backplane on the 10457 Series Card Rack. This connector provides
the board’s digital I/O as well as power input. In addition, all of the audio buses are interfaced through
P1.

P2

P2 provides an audio interface to support up to 12 central amplifiers. It also provides an RS485 interface
to enable communication with external Snaptrack™ modules.

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