PS Engineering
PMA7000BT Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-780-0204
Page 1-1
May 2015
Section I GENERAL INFORMATION
1.1
INTRODUCTION
The PMA7000BT represents the next step in cockpit audio control and intercommunications utility. Using
proprietary IntelliVox® design, this unit eliminates the requirements for intercom squelch adjustments. This
audio panel incorporates Bluetooth® connectivity for added cockpit utility.
The unit is designed for outstanding ergonomics and visually defined mode annunciation 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 PMA7000BT.
1.2
SCOPE
This manual provides detailed installation and operation instructions for the PS Engineering PMA7000BT-
series of Audio Selector Panel/Intercom Systems. This includes the following units:
Model
Description
Part Number
PMA7000BT Option 3
Stereo Audio Selector Panel with Marker Beacon
7000BT
050-781-0204
1.3
EQUIPMENT DESCRIPTION
The PMA7000BT-series is a state of the art audio isolation amplifier and audio selector that contains an
automatic voice activated (VOX) intercom system. It can switch up to three transceivers (Com 1, Com 2
and Com 3) and six receivers (Nav 1, Nav 2, ADF, DME, MKR and AUX).
A duplex COM 3 mode (selectable at installation) allows the PMA7000BT to act as an audio interface be-
tween aircraft headphone and microphones and specific aircraft approved (FAA/FCC) satellite telephone
equipment.
Warning: Use of non-aviation approved cellular telephone equipment may be prohibited by regulation.
PS Engineering is not responsible for unauthorized airborne use of cellular telephones.
For airborne use, the PMA7000BT must be interfaced with an approved system.
There are four unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar altime-
ter warning.
Push buttons select the receiver audio source provided to the headphones. A SPR 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.
Push buttons select one of the communication transceivers for the pilot and copilot position, and allows
radio transmission. In "Split Mode" the PMA7000BT has the ability to allow the pilot and copilot to oper-
ate different transceivers independently. The Com 3/Satellite TEL mode (selected at installation) allows the
pilot to use the audio panel for duplex operation, such as with satellite telephones. External off hook
switches permit telephone operation for the copilot and passengers.
A fail-safe mode connects the pilot headphone and microphone to COM 1 if power is removed for any rea-
son, or if the power switch is placed in the Off (Fail-safe) position. Unswitched input #1 is also connected
to the pilot headset in Fail-safe mode.
A six-station voice activated (VOX) intercom is included in the PMA7000BT. This system has PS Engi-
neering’s exclusive
IntelliVox® circuitry that eliminates manual adjustments. The system contains six sepa-
rate VOX mic circuits, and only opens the microphone channel in use.
The intercom system incorporates pilot isolate and crew modes, two independent stereo music inputs with
"Soft Mute," and flashing LED indicators for transmit indications. Intercom control is through two front
panel- mounted volume knobs and 3-position mode switch. The concentric volume controls the intercom