AEM AA24 Series, Installation And Operation Manual

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AA24/AA25 Series Single User Audio Controller
SM18 Installation and Operation Manual
April 14, 2012 Rev: 5.00 Page 3-1
ENG-FORM: 806-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Section 3.0 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the AA24/AA25 Series
Single User Audio Controller.
3.2 General
The AA24/AA25 series single user audio controllers allow selection of transmit and receive audio, and
LIVE, VOX or PTT intercom. One direct alerting input is provided to allow emergency alerting audio to
pass unmated to the user’s headset. After transmitting on the radios the user’s microphone automatically
reverts back to intercom mode. The AA25 audio controller also provides central volume adjustment for all
the aircraft audio.
3.3 Controls and Indicators
3.3.1 Transmit selection
The rotary selector switch at the lower left of the panel selects the desired transmit function. When the
radio PTT switch is activated, the microphone will be coupled to the radio or PA channel selected.
Receive audio is automatically selected with the transmit selection, and no additional switching is needed
to establish outside communication.
During transmission, the TX annunciator LED on the front panel will illuminate green.