Northern Airborne Technology AA95-766 - Manual (Page 31)

SM95-766 Rev. 2.00 AA95-766 Single Channel Audio Controller Manual
Section 3 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the
AA95-766 Single Channel Audio Controller.
3.2 General
The AA95-766 provides central adjustment for all the aircraft audio. It allows selection
of transmit and receive audio, live, VOX, or keyed (PTT) intercom, control of a hand
microphone, and pilot isolation/emergency operation.
Sidetone level is adjustable internally, while receive (RX) and intercom (ICS) levels are
adjustable from the front panel. All audio (except the sidetone of the radio in use) is
muted during transmit for clarity. The directly connected DIRECT AUDIO input signal
(see Section 3.5) remains un-muted during transmit. ICS operation will allow transmit
during any ICS mode by using the PTT switch.
3.3 Controls and Indicators
Transceiver Receive
Audio Switches
Receive
Volume
Control
NAV Receive
Audio Switches
TX/PA Select Switch ICS Controls Mode Switch
The transmit and PA functions are controlled with a single rotary selector switch. The
main receive volume, ICS volume and ICS VOX squelch are individually adjusted with
rotary controls. The ICS and ISO/EMER / NORM operations are selected using colour-
coded toggle switches. Individual receive audio is selected with colour-coded toggle
switches.
Dec 6, 2004 Page 3-1
ENG-FORM: 806-0106.DOT
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