Northern Airborne Technology AA83-001 rev.4.10 - Manual (Page 9)

SM09-2 Rev. 4.10 AA83-001 InterMUSIC™Stereo Intercom System Manual
Section 1 Description
1.1 Introduction
This manual contains information on the AA83-001 InterMUSIC™. All derivative products
will be covered by manual supplements, which can be obtained from NAT as required.
Information in this section consists of purpose of equipment, features and specifications.
1.2 Purpose of Equipment
The AA83-001 is a 4-place stereo voice-activated intercom that provides full intercom
capabilities for the pilot and copilot and two passengers (PAX). It provides
entertainment and communication audio in full stereo to all four headsets, and
transceiver control for both the pilot and co-pilot. The InterMUSIC
™
family of stereo
intercoms allows several installation configurations - from single unit systems, to fully
independent stations for the pilot, copilot and passengers. For expanded systems, tie
line connections are compatible with other NAT systems including AA80, AA82, AMS4x
and AA9x series units.
1.3 Features
1.3.1 Stereo & Intercom Special Features
The stereo music audio is muted during transmit or intercom operation and when radio
receive audio is detected, permitting greater intelligibility of incoming transmissions.
The AA83-100 muting depth adjustment ranges from complete music muting to gentle
background music on command, with a fast attack and slow level return for optimum
user comfort. Each microphone is individually gated, for the best possible noise
performance during VOX operation. A front panel annunciator allows easy visual
setting of the VOX threshold, and also indicates transmit operation.
1.3.2
Communication Functions
The AA83-001 provides full boom-mic transmit and ICS functions for the pilot and co-pilot,
and provides ICS and radio monitor operation for two additional passengers. Pilot priority
on transmit and pilot isolation (direct connection to the aircraft radio system) are standard
features on all NAT intercom systems. The AA83-001 can support PTT ICS operation for
all users, and can be wired to cyclic/yoke switches for both TX and ICS functions.
The balance adjustment pots permit signals to be shifted in the user's acoustic listening
space so that tower transmissions appear to come from one area, and intercom from
another. This greatly aids in signal recognition and more accurately reproduces a
natural listening environment for the flight crew.
Oct 20, 2004 Page 1-1
ENG-FORM: 800-0108.DOT
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