Northern Airborne Technology AMS50 - Manual (Page 47)

SM50 Rev. 4.00 AMS50-000 Stereo Audio Panel with Marker Manual
Section 3.0 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the
AMS50 Stereo Audio Panel.
3.2 Controls and Indicators
Marker
Beacon
Display
The front panel controls consist of a concentric VOL/VOX knob, and two banks of tactile
push-button switches with amber backlighting. When selected, the operator will feel the
switch operate, and the associated LED will illuminate. The function indicator LEDs and
Marker Beacon lights feature self-contained photocell dimming (no operator action
required), and the backlighting of the push-buttons is controlled with the aircraft dimming.
The functions of the controls will be considered separately in sections 3.2.1 to 3.2.8
below. The associated indicators will be discussed in the relevant sections.
3.2.1 Transmit Operation
Pilot’s Transmit Control
and Indicators
SPLIT Button
(See section 3.2.1.3)
Co-Pilot’s Transmit Control
and Indicators
There are two isolated PTT inputs for the Pilot and Co-pilot. Activation of the PTT
inputs connects the user’s MIC to the selected COM, and activates the output PTT to
the selected COM.
When either PTT is pressed, the music and all ICS audio is muted from the headphone
of the particular PTT user. The following audio is NOT muted during PTT: the sidetone
of the selected Transmitter, the Receive selections (COMs, NAVs, MKR, DME or AUX)
and the Direct Audios.
All cockpit speaker audio is muted by either PTT input.
Nov 12, 2003 Page 3-1
ENG-FORM: 806-0104.DOT
Amendment # 2 Mar 20, 2006
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.