PS Engineering PMA8000MP3-Avidyne - Manual (Page 23)

PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0403 Page 3-2 Rev. 4, Jan. 2011
1 to C OM 2, if C OM 2 audio was previously selected, C OM 1 audio will continue to be heard. This elimi-
nates the pilot having to switch Com 1 audio back on, after changing transmitters.
When switching from C OM 1 to C OM 2 while Com 2 was not previously selected, C OM 1 audio will be
switched off. In essence, switching the mic selector will not override prior selection of COM receiver au-
dio.
In normal (not split) modes, the PMA8000B-MP3 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 m icrophone will be heard over the
selected com transmitter.
In TEL mode, the pilot microphone and headphones are connected to the cell phone. The pilot PTT will
switch the pilot mic to the selected com transceiver, and allow continued aircraft communication s to con-
tinue. (See Section 3.4 —TEL—for more details)
The copilot will also be able to transmit on the other selected radio with his PTT as well.
3.2.1.1 Split Mode
The split mode can be activated at any time by pressing the C OM 1 and C OM 2 XMT buttons at the same
time. This places the pilot on C OM 1 and the Copilot on C OM 2.
Pilot on C OM 2 and Copilot on C OM 1 is not possible.
When the split mode is activated, the intercom between the pilot and copilot is inhibited, although the
passengers can still talk among themselves. The crew intercom can be reactivated if desired by pressing
the “Mute” button. The indicator LED in the Mute button will be green when the intercom is off (muted),
and turn off to indicate that the intercom is not muted, and the crew can speak t o each other. See § 3.4.7
for information.
NO T E
Due to the nature of VHF communications signals, and the size constraints in general aviation aircraft, it
is probable that there will be some bleed-over in the Split mode, particularly on adjacent frequenci es. PS
Engineering makes no warranty about the suitability of Split Mode in all aircraft conditions.
3.2.1.2 Swap Mode (Switch from Com 1 to Com 2 remotely)
With a yoke mounted, normally open momentary switch, the pilot can change from the current Com
transceiver 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.
3.3 Audio Selector (4)
Communication audio from the other radio, not selected for transmit, can be heard by pressing the associ-
ated RCV button. You will always hear the audio from the selected transceiver.
Navigation receiver audio is selected through five momentary, push -button, backlit switches.
The users can identify which receivers are selected by noting which green switch LEDs are lit. Navigation
aid audio push buttons are labeled Nav 1, Nav 2, MKR (Marker), ADF and AUX (auxiliary). DME au-
dio (if present) will come through when the AUX button is selected. When one of these buttons is pressed,
the mode is active, and the LED will illuminate. Press the switch again and it will be "off" and remove
that receiver from the audio output.
In SPLIT mode, only the pilot will hear selected navigation audio.
3.3.1 Monitor (Mon) Function (11)
The monitor buttons (Mon1 and Mon2) when selected, allow the user to monitor (listen only) the Standby
frequencies selected on the Entegra ACD215 Control/Display Unit, for the Com1 and Com2 radio mod-
ules respectively. If a DME is present, audio will be selected using the Mon 1 button. To prevent bleed
through, these audio sources are muted during radio transmissions.
3.4 Telephone (TEL) (9)
The TEL mode serves as a full duplex interface and distribution for telephone systems such as AirCell or