PS Engineering PMA7000CAP Installation Manual - Manual (Page 4)

PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Civil Air Patrol Version Installation and Operator’s Manual
200-072-0004 Page 1-1 Rev. 4, Sept. 2000
Section I -- GENERAL INFORMATION
1.1 INTRODUCTION
The PMA7000M-S represents the next step in cockpit audio control and intercommunications.
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. These units were custom designed to meet the requirements of the
Civil Air Patrol in the SAR environment.
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 PMA7000M-S.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the PS Engineering
PMA7000M-S-units provided to the Civil Air Patrol:
Model Description Part Number
PMA7000S-CAP Stereo Audio Panel with special CAP functions 7000S-CAP
PMA7000M-S-CAP Stereo Audio Panel with Marker with special CAP
functions 7000MS-CAP
Option 1 added to any unit Same as above, with optional recorder and message
system Opt.1
Option 3 added to any system Black bezel (no silver trim) Opt 3
Other options may be applied for exclusive use by specific aircraft manufacturers, under Type Certification Call for
information.
1.3 EQUIPMENT DESCRIPTION
The PMA7000-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 five receivers (Nav 1, Nav 2, ADF, DME, and
MKR).
There are two unswitched inputs, for autopilot disconnect, and/or radar altimeter 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.
A rotary switch selects one of the three communication transceivers for the pilot and copilot
position, and allows radio transmission. In "Split Mode" the PMA7000M-S has the ability to
allow the pilot and copilot to operate three different transceivers independently. In concert with
the swap mode, six combinations of three transceivers are possible
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.