PS Engineering PMA9000EX Pilot’s Guide User Manual

Page 3

202-920-0100

Page 3

OCT. 2010

button illuminates to indicate that the audio is
selected. The top row of RCV pushbuttons (#
3) allows selection of the receiver audio.

The PMA9000EX-Series has an automatic
com receiver selector system. Audio from the
selected transceiver is automatically heard in
the headsets and speaker (if selected). You can check this function by
switching from C

1 transmitter to Com 2 transmitter by pressing

the C

2 transmitter selector pushbutton. See that the associated

Com 2 receive pushbutton indicator light that is located immediately
above the Com 2 transmitter pushbutton turns green. This guarantees
that the pilot will always hear the audio from the transceiver selected
for transmit.

The PMA9000EX “remembers” the receiver selection, so that when
switching transmitters from C

1 to C

2, if C

2 audio was

previously selected, C

1 audio will continue to be heard. This

eliminates the pilot having to switch Com 1 audio back on, after
changing transmitters.

When switching from C

1 to C

2 while Com 2 was not previ-

ously selected, C

1 audio will be switched off. In essence, switch-

ing the mic selector will not override prior selection of COM receiver
audio.

In normal (not split) modes, the PMA9000EX gives priority to the
pilot’s radio Push-To-Talk (PTT). If the copilot it transmitting, and
the pilot presses his PTT, the pilot’s microphone will be heard over
the selected com transmitter.

1.1.1.1

Split

Mode

The split mode can be activated at any time by pressing the C1 and
C2 XMT buttons at the same time. This places the pilot on C

and the Copilot on C

2. All four COM indicators will illuminate to

indicate that the panel is in split mode.

In split mode, the intercom will remain active in the selected mode,
however, and music will be muted in the crew positions.

Pilot on C

2 and Copilot on C

1 is not possible.

Split Mode does not turn off Nav, ADF, or Aux selected audio to
pilot. However, the copilot will only hear the copilot-selected com
receiver and unswitched inputs