2
PMA7000H Pilot Guide
202-780-0429
OPERATION
SCOPE
This section provides detailed operating instructions for the PS Engineering
PMA7000H Audio Selector Panel/Intercom Systems. Please read it care-
fully before using the equipment so that you can take full advantage of its
capabilities.
This chapter is divided into four sections covering the basic operating areas
of the PMA7000H systems. They are Audio Selector, Transceiver Selec-
tion, Intercom, and Marker Beacon Receiver.
PMA7000H controls
Power Switch (EMG-Fail Safe Operation)
Unit power is turned on and off by pushing the volume knob. In the
OFF
or
"
EMG
" position, the pilot is connected directly to Com 1 and to the
unswitched #1 . This allows communication capability and critical audio
input regardless of unit condition. Any time power is removed or turned
OFF
, the audio selector will be placed in the fail-safe mode.
The power switch also controls the audio selector panel functions, inter-
com, and marker beacon receiver.
Microphone (XMT) Selection (All models)
There are six pushbuttons associated with the communications transceivers.
The lower buttons control which transceiver is selected for transmit.
MARKER INDICATOR LAMPS
MARKER MODE
RECEIVE AUDIO SELECTORS
PILOT & COPILOT VOLUME (INNER)
PASS VOLUME (OUTER)
IINTERCOM MODE
TRANSMIT SELECTORS
CREW ICS
CD MUTE CONTROL
SPEAKER CONTROL