SM69 Rev. 4.00

AA12S Series Compact Audio Controller Manual

Section 1 Description

1.1Introduction

Information in this section consists of the functional and operational procedures for the AA12S Series Compact Audio Controllers.

The information in this manual is applicable to all models unless otherwise specified.

1.2General Information

The AA12S is a compact Dzus-mounted audio controller with an integral 4-place stereo voice-activated intercom. It provides intercom capabilities for the pilot, co-pilot and two passengers (PAX). The AA12S accepts stereo music inputs from either portable or fixed entertainment systems to produce high quality stereo headset output.

Radio functions include selectable transmit capability for pilot and co-pilot on 3 COM radios and a PA. Receive audio selections include COM1, COM2, COM3, MKR, NAV, ADF, and DME.

1.2.1Features

All four mics have individual VOX gating. Each gate may also be activated with the corresponding ICS keyline.

ICS muting is automatic during radio transmission.

The unit is supplied to suit a standard NAT bidirectional ICS audio TIE line for multi-unit interface (configuration dependent). The crew and PAX are always connected except in the case of Pilot ISO mode, when the pilot is disconnected from the ICS tie line.

If required, one or more receiver audio inputs may be configured at the factory prior to ordering as (an) unswitched Direct Audio input(s). A new part number may be assigned. Contact NAT Product Support for further information.

1.2.2Installation Adjustments

The following audio levels can be adjusted at the time of installation, or during service by an approved dealer, using individual level trimpots.

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Music Mute level

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Sidetone level

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ICS Bass level

•

ICS Balance

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RX volume level

•

RX Balance

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Music Bass level

•

Music Balance

 

 

 

 

Oct 13, 2005

 

 

Page 1-1

ENG-FORM: 800-0107.DOT

 

Amendment # 1

Oct 14, 2005

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.