PS Engineering PMA8000D Installation Manual - Manual (Page 25)

PS Engineering
PMA8000D Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0304 Page 3-1 Rev. 6, Oct. 2014
Section III OPERATION
3.1 SCOPE
This section provides detailed operating instructions for the PS Engineering PMA8000D, Audio Selector
Panel/Marker Beacon Receiver/Intercom Systems. Please read it carefully before using the equipment so
that you can take full advantage of its capabilities.
This section is divided into sections covering the basic operating areas of the PMA8000D systems. They are
Communications Transceiver Selection, Audio Selector, Intercom, Marker Beacon Receiver and special
functions, including the Bluetooth® functionality in the PMA8000D.
Figure 3-1 PMA8000D Operating Controls
Unit power is turned on and off by pushing the volume knob. In the OFF or "EMG" posi-
tion, the pilot headset is connected directly to COM 1. This allows communication capa-
bility regardless of unit condition. Any time power is removed or turned
OFF , the audio
selector will revert to fail-safe mode.
NOTE: Both crew members are connected to COM 1 in fail-safe. There is no priority,
and in some cases microphone loading may make it necessary to unplug one crew mem-
ber’s microphone for optimum transmission quality.
The power switch controls all audio selector panel functions, intercom and marker bea-
con receiver. All pushbutton selections will be remembered and return to the last state
when turned on.
3.2 Communications Transmit (XMT) Selection (2)
There are three pushbuttons associated with the transmitter selection. The three lower
buttons (# 2) control which transceiver is selected for transmit. The top row of pushbut-
tons (# 3) allows selection of the receiver audio. Push the lower button to select the de-
sired COM transmitter.
The PMA8000D-Series has an automatic selector system. Audio from the selected trans-
ceiver is automatically heard in the headsets and speaker (if selected). You can check
this function by switching from COM 1 transmitter to COM 2 or COM 3 transmitter by
pressing the transmitter selector pushbutton. See that the associated COM 2 or 3 receive
pushbutton indicator light that is located immediately in the transmitter pushbutton turns
green. This guarantees that the pilot will always hear the audio from the transceiver se-
lected for transmit.