Intercom Function; Monitor Function - PS Engineering PMA8000C Operation Manual

gins. NOTE: Snart Functions are not available in the split mode.
There are three special functions. "Intercom" function is related to the in-
tercom audio distribution, and allows the crew to mute passengers' intercom
feed when radios are active.
The "Monitor" function mutes the secondary communication radio audio
when the primary radio (the one selected to transmission) is active.
"Music" function controls how music is distributed in your airplane.
There are two music sources available to the PMA8000C, in addition to the
Bluetooth stream. Music 1 input can be either on the front jack,
or the Music 1 input at the rear connector (Pins 23 and 24, J2).
Music 2 is wired into the rear connector, only (Pins 26 and 27,
J2)
The volume of the function selection annunciations and recorder
playback can be adjusted through a hole on the top of the unit marked "ANN
VOL."
"Intercom" Function
Function controls the distribution of aircraft radio and passenger
Intercom
intercom. In the "Standard intercom function" mode, aircraft radios are dis-
tributed to all, when the intercom is in the ALL mode. In CREW mode, only
the pilot and copilot positions will hear aircraft radios.
When in "Alternate Intercom Function," the passengers will NEVER hear
aircraft radios, even in the ALL mode. In addition, when in the
ALL intercom mode, passengers will be able to converse with
the crew, unless the aircraft radio becomes active, when the in-
tercom audio from the passengers to the pilot and copilot is
stopped, so the crew can focus on the radio. Passengers will al-
ways be able to talk to each other.
To activate this function hold the COM 3 XMT button until the audio an-
nounces "Alternate Intercom Function," when activated, and "Standard In-
tercom Function" when deactivated." The alternate intercom mode is an-
nounced at power up, unless the power on announcement has been defeated.
"Monitor" Function
This function turns the Monitor mode on and off.
When the Monitor mode is on, the audio from the COM that is selected for
reception only (only top LED illuminated) will be muted when
the radio that is selected to transmit becomes active.
This function is useful if you are copying weather from AWOS
on COM 2, but have clearance delivery tuned in on COM 1.
With the monitor active, the AWOS audio will be silenced when
clearance delivery starts to speak.
Page 16 202-890-0303 Rev. 3 PMA8000C Pilot Guide