Northern Airborne Technology AA86 - Manual (Page 21)

SM48 Rev. 4.00 AA86/87 Stereo Intercom Manual
Nov 12, 2003 Page 3-1
ENG-FORM: 806-0104.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 3.0 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the
AA86/87 Stereo intercom.
3.2 Controls and Indicators
AA86/87 - Vertical Configuration
AA86/87- Horizontal Configuration
3.2.1 On/Off, Volume and Vox controls.
The Volume, Vox and Power controls are dual concentric potentiometer assemblies with
an integral push on/push off switch.
3.2.1.1 On/Off Switch
The On/Off function of the intercom is operated by pushing the smaller (inner) portion of
this knob. Each switching action will change the state of the intercom, and the LED
lamp located below and to the left of the On/Off switch (when the intercom is in its
horizontal position) will illuminate green when the intercom is on. (This lamp additionally
functions as a pilot PTT indicator and will turn red upon Pilot PTT actuation.)
The pilot's microphone and headphones are automatically routed directly to the audio
panel when the AA86/87 is placed in the off position.
On/Off, VOL and
VOX Control
(Section 3.2.1)
MUSIC Vol, MUSIC Mute and Isolate Controls
(Section 3.2.3)
Intercom and
Pilot PTT
Indicator LED
Pilot Isolate and
Co-Pilot PTT Indicator LED
Active Microphone LED’s
Section 3.2.4
PRIORITY Control
(Section 3.2.2)