Northern Airborne Technology AMS42 - Manual (Page 15)

SM19 Rev. 4.00 AMS42/44 Dual Channel Audio Controller Manual
Nov 21, 2003 Page 1-1
ENG-FORM: 800-0103.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1 .0 Description
1.1 Introduction
This manual contains information on the AMS42 and AMS44 Dual Channel Audio
Controllers.
Information in this section consists of purpose of equipment, features and specifications.
1.2 Purpose of Equipment
The AMS42 and AMS44 are dual channel audio controllers that provide central control
of all aircraft audio. They allow selection of transmit and receive audio, emergency
operation and provide LIVE, KEYED, or VOX intercom. Support for the pilot, copilot and
five passengers is provided as well as left or right side pilot configurations.
The purpose of the AMS42 and AMS44 is to provide centralized control for all audio in
the aircraft. This is accomplished by providing positions for up to five transceivers and
up to eight navaids. Other functions such as external PA interface, boom mic support
for the pilot and copilot, seven place intercom, emergency and ISO operation, two direct
audio inputs and rear hand mic operation are also provided.
1.3 Design Features
The AMS42 and AMS44 can be easily configured at the time of installation for pilot
operation from the left or right side of the controller by selection of internal jumpers and
switches accessible through the top cover. The five passenger positions are also
configurable for left or right side operation.
Both controllers provide independent volume control of S/T (sidetone), ICS (intercom)
and RX (receive) audio for left and right side users.
Both controllers utilize active bandpass filtering for RX and ICS operation for maximum
audio clarity in high ambient noise conditions.
1.3.1 Transmit Functions
Both controllers provide equal transmit capability between left and right sides and
support the use of a hand microphone. The hand mic is internally configured for left or
right side operation, and is connected directly to the selected radio for use during
emergency or equipment failure situations.