Page 2 202-890-0702 PMA8000BT Pilot Guide Rev. 9
OPERATION
This section provides detailed operating instructions for the Audio Selector
Panel/Intercom Systems. Please read it carefully 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 PMA7000B sys-
tems. They are Audio Selector, Transceiver Selection, Intercom, and Marker
Beacon Receiver.
PMA8000BT controls
Power Switch (1) (EMG-Fail Safe Operation)
The power switch controls all audio selector panel functions, intercom and
marker beacon receiver.
When the unit is turned off, either by pressing the volume control, or if the
breaker is pulled removing power, the PMA8000BT is in Fail-Safe mode. In
this mode, the pilot’s headset is connected to COM 1 for transmit and re-
ceive, and connected to unswitched input #1 for priority audio alerts. The fail
safe audio will only be heard in the left ear of a
stereo headset.
Communications Transmit (XMT)
Selection (2)
To select Com 1 or Com 2 for transmit, press the
button on the bottom row, next to the XMT leg-
end. The bottom and top button indicators light,
showing that you will transmit and receive on the selected radio.
Transmitter selection
Receiver selection
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