Northern Airborne Technology AMU50-001 - Manual (Page 4)

AMU50-001 Audio Management Unit
SM76 Installation and Operation Manual
Section 1 Rev: 1.03
Issue 1 Page 1-1
ENG-FORM: 800-0116.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
AMU50-001 Audio Management Unit (AMU50). All derivative product information shall be contained in the
applicable manual supplement, which may be obtained from Northern Airborne Technology Ltd as
required.
Review all notes, warnings and cautions.
Note: This manual contains information applicable to units MOD 12 and above (s/n 3000 and above).
For information applicable to units MOD 11 and below (s/n 2999 and below) contact the product
support department at Northern Airborne Technology Ltd.
1.2 Product Description
1.2.1 System Information
The Digital Audio Communication System (DACS) is a management system that distributes and controls
all of the transceiver, receiver and warning source audio in an aircraft. It enables the transmission of
microphone audio to a selected Transceiver and distributes all Inter-Communication System (ICS) audio.
The primary component of the DACS is the AMU50. Connected to this Line Replaceable Unit (LRU) are
the user headsets, the transceivers, the receivers, and the Audio Control Panels (ACP). The AMU50 also
has an audio accessory port that enables the connection of a unit for providing ICS audio in the cabin.
The DACS architecture is a star configuration to prevent the loss of the entire system due to failure of one
connection. It provides a redundant power supply, redundant amplifiers for the crew microphones (MIC)
and headphones (PHN), redundant amplifiers for the first three direct audio inputs, and multiple modes of
operation.
The Power-On Built-In-Test (PBIT) function provides fault analysis down to the LRU level, while the
Continuous Built-In-Test (CBIT) is a background task that verifies hardware functionality on an ongoing
basis.
1.2.2 System Configuration
The DACS is configurable on a per installation basis using the AMU50 connected via a Universal Serial
Bus (USB) port to a Personal Computer (PC) running the DACS Device Configuration Software (DevCs).
System configuration is stored in the AMU50 and the Remote Memory (RM).
The DevCs is a PC application that allows a user to control adjustments and functions of the DACS
Digital Audio Communication System equipment including the AMU50 and the ACPs. The PC Application
provides a graphical user interface for the display and control of the adjustment levels and function
behaviour or configuration. The configuration can be saved as a file. The configuration can be written to,
and read from, the DACS equipment over a serial data communication buss.