PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0403
Page 3-6
Rev. 4, Jan. 2011
Mode 4 - Radio will
not
mute music, intercom
will
mute music - MUTE LED is OFF. Annunciation is
"intercom mute."
♫ Music
Intercom
Radio
Annunciation
LED
Mode 1
Muted
Muted
Mute on
on
Mode 2
♫
♫
Mute off
off
Mode 3
♫
Muted
Radio mute
off
Mode 4
Muted
♫
intercom mute
off
The passenger’s intercom also has a SoftMute™ circuit. If the passengers hear the radio, or talk on the
intercom, the music will mute. If the audio panel is in CREW mode, then the radio reception will not a f-
fect the passenger music.
Passengers also have a Karaoke Mode. If the passengers are listening to the music 1 input or front panel
input, their Karaoke Mode is controlled by the front panel “Mute” button. If the passengers are listening
to the music 2 input, their Karaoke Mode is activated by an external switch installed either in the panel, or
connected to the AUX button logic output pin on the PMA8000B MP3.
3.8.1
Music in Pilot ISO mode
If desired, the pilot can elect to hear Music #1, I the ISO mode. While the intercom is in ISO mode, push
the Function (MON 1) and ICS buttons at the same time. This mode will be indicated by the ICS ISO
LED blinking slowly (once in every 5 seconds). The pilot will now hear Music #1, and it will mute in ac-
cordance with the Mute mode as described in §3.8.
3.9 Telephone Mode (9)
The TEL mode serves as a full duplex interface for telephone systems such as AirCell or portable cellular
phones with earpiece jacks. When interfaced with an approved airborne telecommunications system, the
PMA8000B-MP3 can serve as a audio control and distribution center. When TEL is active, the button will
blink about twice as fast as the normal transmit rate.
In
ALL
intercom mode, all crew and passengers will be heard on the phone when they speak. All will
hear selected audio. Com audio is automatically heard in the headsets.
In
CREW
mode, the pilot and copilot are connected to the telephone. The pilot and copilot will have
transmit capability on the other selected transceiver Com 1 or 2, simply by using their respective PTT
switch.
In
ISO
intercom mode, when the PMA8000B-MP3 is in the
TEL
mode, the pilot position is in the "Phone
Booth." Only the pilot will hear the telephone, and only he will be heard. He will also have access to Com
1 or 2, and will transmit on that radio using the PTT. All selected audio is provided.
As shipped from PS Engineering, the PMA8000B-MP3 does not provide cellular telephone sidetone (the
user’s voice fed back to the headset), because this is often provided by the telephone itself.
Some cell phones do not provide sidetone. In PMA8000B MP3 Avidyne audio panels above serial number
D10251, telephone sidetone can be enabled by pressing the TEL and MON 1 buttons for more than one
second. For units with serial number D10250 and below, an internal modification can be made that will
allow the PMA8000B-MP3 to provide this sidetone. Contact PS Engineering for more information.
