PS Engineering PMA4000 Installation Manual - Manual (Page 4)

PS Engineering
PMA4000 Series Audio Selector Panel and Intercom System
Installation Manual
200-041-0002 Page 1-1 Rev 5, March 2007
Section I GENERAL INFORMATION
1.1 INTRODUCTION
The PMA4000 TSO Audio Selector Panel is a right-sized solution for the audio switch-
ing needs of light aircraft. By combining basic audio selector panel, with PS Engineer-
ing’s revolutionary IntelliVox® intercom, the aircraft owner can have audio panel func-
tionality without an investment in panel space.
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.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the PS Engineer-
ing PMA4000 TSO Audio Selector Panel/Intercom Systems. This includes the following
unit:
Model Description Part Number
PMA4000 TSO Audio Selector Panel 11942
PMA4000-NON TSO Audio Selector Panel w/IRS 11941
1.3 EQUIPMENT DESCRIPTION
The PMA4000-series is a state of the art audio isolation amplifier and audio selector that contains an auto-
matic voice activated (VOX) intercom system. It can switch two transceivers (Com 1, Com 2) and two re-
ceivers (Nav 1, Nav 2) In addition, there are four unswitched inputs, for additional audio requirements.
Push buttons select the receiver audio source provided to the headphones. A SPR push-on switch on the
volume control 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 toggle switch selects one of the two trans-
ceivers for the pilot and copilot positions in transmit.
A fail-safe mode connects the pilot headphone and microphone to COM 1 if power is removed for any
reason, or if the Com Selector switch is in the “Off” position.
A 4-station voice activated (IntelliVox™) intercom is included in the PMA4000. Pilot isolate and ALL
modes, a mono music input with "Soft Mute." A dual concentric knob pair controls pilot volume and copi-
lot/passenger intercom volume.
Figure 1-1 PMA4000