PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0403
Page 3-9
Rev. 4, Jan. 2011
3.10.5 Function “A”
Function “A” controls the distribution of aircraft radio within the intercom, as well as passenger intercom
muting. In the “S
tandard intercom function
” mode, aircraft radios are distributed to all, when the
intercom is in the ALL mode. In CREW mode, only the pilot and copilot p ositions will hear aircraft
radios.
When Function A is toggled into “
Alternate Intercom Function
,” the passengers will NOT hear aircraft
radios, even in the all mode. They will be able to converse with the crew. However, when the aircraft radio
becomes active, the intercom audio to the crew from the passengers is muted, allowing the crew to focus
on the radio. The passengers will converse normally among themselves.
3.10.6 Function “B”
Function Button “B” allows you either send the music 1 input to all intercom stations, all of the time, or
have the normal rules apply to our music inputs.
When “
Music one all headsets
” is selected, music 1 (from the rear connector input, Pins J2 23 & 24 only)
will be distributed to all headsets and is independent of the intercom mode switch. Therefore, even in the
CREW mode, the passengers will hear Music 1, even though they will not hear the intercom or radios.
This mode allows you to use a single in-flight entertainment source aboard, and to send it everywhere,
even in crew mode. The music muting will be normal, and follow the selected mode of the crew or pa s-
sengers.
When select Function “B,” for the alternate function, you hear “
Music one, crew only
.” Now, music input
2 will follow the modes in Function “C.”
3.10.7 Function “C”
Function “C” allows you to configure your music to be either
independent
of the intercom mode, or to
make Music 2
dependent
on the intercom mode.
When you press Function “C,” you’ll hear, “
Alternate
Music distribution.
” In this case, Music 2 will be
active
only
when the intercom is in the CREW mode, and only the passengers will hear it. This distribu-
tion is similar to other brands of audio panels. It allows the passengers to have their music source come on
only when they are not hearing the crew.
Press again, and you will hear “
Standard
Music Distribution.
” In this mode, Music 2 becomes active, and
will always be presented to the passengers on the intercom. Music 1 is only available to the pilot and cop i-
lot. The intercom mode switch doesn’t have any affect on the music distribution.
When the music is standard, Music 1 will always go to the pilot and copilot positions, and is never heard
by the passengers. Music 2 is always heard by the passengers, and never heard by the pilot and copilot.
This mode is useful if your passengers have a different interest in entertainment or are watching a DVD,
but do not want to be excluded from the intercom conversations.
The pilot can hear this music source in ISO mode, if desired, as follows: In the ISO mode, hold the Func-
tion (Mon 1) button, and press the ICS mode button for more than one second. The ICS mode LED will
blink slowly to indicate music is connected to the pilot headset, although the intercom is not.
Music 2
is provided to the passenger positions regardless of intercom mode, when the audio panel is in
Standard Music Distribution
, and also in
Alternate Music Distribution
, but only if the intercom is in the
CREW mode. The pilot and copilot can never hear
Music 2
, under any condition.
If the passengers always want to hear the source in
Music 1
, input through the rear connector, regardless
of the intercom mode (ISO/ALL/CRW), select “
Music 1 all headsets
.”
If the passengers want to hear the music input through the front panel jack, the audio pane MUST be in
Alternate Music Distribution
, and the intercom must be in the ALL or ISO mode.
