PS Engineering PMA7000B Specifications download pdf (Page 4)

PS Engineering

PMA7000B Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-780-0005 Page 1-1 Rev. 11, February 2015

Section I GENERAL INFORMATION

1.1 INTRODUCTION

The PMA7000B represents the next step in cockpit audio control and intercommunications utility. Using

proprietary IntelliVox® design, this unit eliminates the requirements for intercom squelch adjustments. 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 PMA7000B.

1.2 SCOPE

This manual provides detailed installation and operation instructions for the PS Engineering PMA7000B-

series of Audio Selector Panel/Intercom Systems. This includes the following units:

Model

Description

Part Number

PMA7000B Option 3

Stereo Audio Selector Panel with Marker Beacon

7000B- Opt. 3

1.3 EQUIPMENT DESCRIPTION

The PMA7000B-series is a state of the art audio isolation amplifier and audio selector that contains an au-

tomatic 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 PMA7000B to act as an audio interface be-

tween aircraft headphone and microphones and specific aircraft approved (FAA/FCC) cellular telephone

equipment.

Warning

: Use of non -aviation approved cellular telephone equipment may be prohibited by regul ation.

PS Engineering is not responsible for unauthorized airborne use of cellular telephones.

For airborne use, the PMA7000B 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 PMA7000B has the ability to allow the pilot and copilot to operate

different transceivers independently. The Com 3/TEL mode (selected at installation) allows the pilot to use

the audio panel for duplex operation, such as with specific cellular telephones. External 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 PMA7000B. This system has PS Engineer-

ing’s exclusive IntelliVox® circuitry that eliminates manual adjustments. The system contains six separate

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

level for the pilot and copilot, while the outer knob controls the passenger intercom volume. Intercom

squelch is automatic.

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