Northern Airborne Technology AA30-3xx - Manual (Page 37)

SM74 Rev. 4.10 AA30-301 Expansion Panel Manual
Section 3 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the
AA30-301 Expansion Panel.
3.2 General
The AA30-301 Expansion Panel is a Dzus-mounted 4-transceiver or radio receiver
expansion panel, designed to work in conjunction with the 380-series Audio Selector
Panels.
3.3 Controls and Indicators
The AA30-301 provides four ganged transmitter selector pushbutton switches and four
receiver level panel potentiometers, each with an integral push-in / push-out selector switch.
The laser-engraved text of the faceplate and any selected transmitter or receiver control
is illuminated when backlighting power is supplied to the unit.
3.3.1 Transmitter Selection
The transmitter control switches are four push
switches that are used to select transceivers for
transmission.
When the transmitter control switch is the extended (out) position, the corresponding
transmitter is deselected (off), and the integral mechanical annunciator appears black
behind the clear window, and when the transmitter control switch is in the depressed
(in) position, the corresponding transmitter is selected (on), and the integral mechanical
annunciator appears green behind the clear window.
The default position for all transmitters is deselected (out).
The transmitter controls are designed to prevent accidental selection of more than one
transmitter; pushing a transmitter control switch locks it into the depressed (in) position and
cancels any previously selected transmitter control by returning it to the extended position.
Oct 16, 2006 Page 3-1
ENG-FORM: 806-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.