3
Revision 1, June 2009
202-780-0429
The PMA7000H gives priority to the pilot’s PTT. If the copilot it transmit-
ting, and the pilot presses his PTT, the pilot’s microphone will be heard
over the selected com transmitter.
The PMA7000H-Series has an automatic selector mode. Audio from the
selected transceiver is automatically heard in the headsets and speaker (if
selected). You can check this function by switching from C
OM
1 to C
OM
2
and watch the selected audio light on the selector change from COM 1 to
COM 2. This ensures the pilot will
always
hear the audio from the trans-
ceiver he is transmitting on.
When switching from C
OM
1 to C
OM
2, while C
OM
2 audio had been se-
lected, Com 1 audio will
continue to be heard.
This eliminates the pilot
having to switch Com 1
audio back on, if desired.
When switching from
C
OM
1 to C
OM
2 while
Com 2 has NOT been
selected, Com 1 audio will be switched off. In essence, switching the mic
selector will not effect the selection of Com receiver audio.
When the duplex, or TELEPHONE mode is implemented, Com 3 becomes
the “TEL” position. See page 8 for complete information.
NOTE: Selecting COM 3 –TEL– mode will disable pilot and copilot inter-
com, as the intercom circuit is transferred to the telephone use.
Swap Mode (Switch from Com 1 to Com 2 remotely)
With a yoke mounted, momentary switch, the pilot can change from the
current Com transceiver (Com 1 or 2) to the other by depressing this
switch. To cancel "Swap Mode," the pilot may either press the yoke
mounted switch again, or select a different Com with the XMT buttons.
Audio Selector
Receiver audio is selected through seven momentary, push-button, backlit
switches. You will always hear the audio from the transceiver that is se-
lected for transmit.
The users can identify which receivers are selected by noting which of the
green switch LEDs are illuminated. Push buttons labeled
Nav 1
,
Nav 2
,
MKR
(Marker),
AUX
(auxiliary), and
SPR
(Speaker) are "momentary type
switches. When one of these buttons is pressed, be active, and the LED will
illuminate. Press the switch again and it be in the "off" position and remove
that receiver from the audio.
RCV
XMT