Northern Airborne Technology AA82 - Manual (Page 4)

AA82 InterMUSIC™ Stereo Intercom System
SM09-1 Installation and Operation Manual
Section 1 Rev: 1.00 Issue 4 Page 1-1
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for the AA82
InterMUSIC™ Stereo Intercom System. All derivative product information shall be contained in the
applicable manual supplement, which may be obtained from NAT as required.
Review all notes, warnings and cautions.
1.2 Product Description
The AA82 InterMusic™ Stereo Intercom System is a system for passenger entertainment and
communications. The system is available in two models, the AA82-001 and AA82-060. The AA82-001 is
compatible with AA80 intercoms and allows four stereo positions. The AA82-060 is compatible with AA83
intercoms and allows six stereo positions. Each is linked via the ICS Tie Line to the crew audio system.
The AA82 InterMUSIC™ Stereo Intercom offers the passengers full control of their intercom and
entertainment functions. The front panel controls permit adjustment of Intercom level, VOX threshold and
Music level. Internal adjustments set Receive level, Receive balance, ICS balance, ICS bass, Music
muting and Music balance. These controls allow unique features such as making the intercom audio
appear to be coming from the left and receive audio coming from the right, which is helpful in relating the
audio to the source. The stereo audio is muted during intercom operation or when receive audio is
detected, permitting greater intelligibility of in coming transmissions. A front panel annunciator allows
easy visual setting of the VOX threshold and also indicates RX signal reception.
1.3 Design Features
The AA82 uses surface mount technology and provides true stereo music audio to the headset.
The InterMUSIC™ system employs NAT's unique audio processing, which reduces noise and tailors the
frequency response to produce clean, crisp intercom audio.
High output power and low distortion results in better on-board communication and greatly reduces noise
fatigue.
Employing highly integrated stereo audio processors, component numbers were substantially reduced
and product reliability is increased.
With the reduction of component size, more features were incorporated (Adjustable music muting by
intercom and receive audio, bass control of intercom and stereo audio).
Designed into the smallest possible chassis, it allows mounting in the remotest locations (usually close to
the passengers).
The AA82's ICS Tie Line is fully compatible with existing NAT products, making it possible to chain
multiple systems together (3 units max).
The unit has overvoltage and reverse voltage protection to insure operability in severe aircraft
environments.