AA12S Series Compact Audio Controller
SM69 Installation and Operation Manual
Section 3 Rev: 1.00
Issue 4
Page 3-1
Section 3 Operation
3.1
Introduction
Information in this section consists of functional and operational procedures for the AA12S Series
Compact Audio Controller.
3.2
General Information
The AA12S is a compact Dzus-mounted audio controller with an integral 4-place stereo voice-activated
intercom. It provides intercom capabilities for the pilot, copilot and two passengers (PAX). The AA12S
accepts stereo music inputs from either portable or fixed entertainment systems to produce high quality
stereo headset output.
VOX/TX Annumnciator
RX Select Switches
TX Select Switch
Radio functions include selectable transmit capability for pilot and copilot on 3 COM radios and a PA.
Receive audio selections include COM1, COM2, COM3, MKR, NAV, ADF, and DME.
3.3
Controls and Indicators
3.3.1
Radio Selection
3.3.1.1
Receive
The AA12S is typically configured to select the RX audio from three transceivers and up to four additional
receivers.
The RX Select switches are white double-throw centre-off switches. Receiver audio can be selected by
setting the appropriate RX select switch to the down position.
Transceiver audio can either be selected by setting the appropriate RX select switch to the up position, or
as a function of the TX select switch. The transceiver that is selected by the TX select switch is also
automatically selected for receive. Receive/sidetone audio for the selected COM is automatically
provided.
When a switch is in the centre-off position, no transceiver/receiver audio is selected.
ENG-FORM: 806-0112.DOT
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