Installation manual

AMX240 Audio Panel Installation Manual
200-890-0240 Rev. 02
Section I – GENERAL INFORMATION
1.1 INTRODUCTION
The AMX240 represents another evolutionary step in cockpit audio control and intercommunications utility. Using a
patented IntelliVox® design, front panel utility jack, and pilot programmable configurations, this marks the next
level of audio control. The unit is designed for outstanding ergonomics with visually and aurally defined mode an-
nunciation and selection.
Before installing and/or using this product, please read this manual completely. This will ensure that you will take
full advantage of all the advanced features in the AMX240.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the Avidyne AMX240-series of Audio Se-
lector Panel/Intercom Systems. This includes the following units:
Model
Description
Part Number
Avidyne Part Number
AMX240
Stereo Audio Selector Panel with Marker Bea-
con, includes utility jack and Internal Recorder
System
050-890-0240
200-00253-000
1.3 EQUIPMENT DESCRIPTION
The AMX240 is a state-of-the-art audio isolation amplifier and audio selector that contains an automatic voice acti-
vated (VOX) intercom system and integral marker beacon receiver. It can switch two transceivers (COM 1, COM 2)
and five receivers (NAV 1, NAV 2, MON 1, MON 2 and MKR).
A full duplex TEL mode allows the AMX240 to act as an audio interface between aircraft headphone and micro-
phones and specific aircraft approved (FAA/FCC) cellular telephone equipment.
Warning: Use of non-aviation approved cellular telephone equipment may be prohibited by FCC regulation.
Avidyne is not responsible for unauthorized airborne use of cellular telephones.
For airborne use, the AMX240 must be interfaced with an approved system.
There are five unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar altimeter war n-
ing, with the fifth unswitched input through a front-mounted utility jack, when configured to act as a fifth
unswitched input.
Pushbuttons select the receiver audio source provided to the headphones. A SPKR button allows the user to listen to
the receiver(s) selected on the cabin speaker. Except for the unswitched inputs, all speaker audio is muted during
transmit. Unswitched inputs 1, 3, and 4 are always presented to the aircraft speaker. Unswitched input 2 will be pre-
sented to the speaker when the front panel SPKR push button has been selected.
Pushbutton switches (MIC 1 or MIC 2) allow you to select one of the communication transceivers for the pilot and
copilot position which allows radio transmission. In "Split Mode" the AMX240 has the ability to allow the pilot to
transmit on COM 1 while the copilot can transmit on COM 2. A fail-safe mode connects the pilot headphone and
microphone to COM 1 if power is removed for any reason, or if the power switch is placed in the Off (Fail-safe)
position. Unswitched input #1 is also provided to the pilot headphone in fail-safe
A six-station voice activated (VOX) stereo intercom is included inside the AMX240. This system has patented
IntelliVox® circuitry that eliminates manual adjustments to help eliminate background noise. The intercom system
incorporates pilot isolate, all and crew modes, two independent stereo music inputs with "SoftMute™". Intercom
volume controls are through front panel knobs, pilot on the left with the copilot & passengers being on the conce n-
tric control located on the right hand side. The small volume knob controls the intercom level for the pilot and copi-
lot, while the large knob on the right hand side controls the passenger intercom volume. Intercom squelch is auto-
matic and hands free.