PS Engineering PMA8000B Installation Manual - Manual (Page 29)

PS Engineering
PMA8000B Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0101 Page 3-8 Rev. 4, April 2012
Figure 3-2 Smart Function Keys
These functions are non-essential and non-required and as such are only an accessory capability. They
don’t affect the audio panel’s primary function as a selector panel, aircraft intercom, or marker beacon
receiver. You can’t do anything with these buttons to prevent the PMA8000BT from doing its main job.
Looking at the front panel you’ll notice that the TEL, AUX, Mute and SPR buttons have secondary func-
tion assignments listed underneath the button.
To use these function keys– press and hold the desired key, “Intercom” (TEL) “Monitor” (AUX) or “Mu-
sic” (MUTE) until the audio annunciation is heard, indicating the mode has changed. The SPR controls
the music 1 volume, and is discussed later.
There are multiple music sources available to the PMA8000BT. Music 1 can be input through the front
jack, OR the Music 1 input at the rear connector (Pins 23 and 24 J2). Music 2 is wired into the rear con-
nector, only (Pins 26 and 27, J2)
3.11.1 “Intercom” Alternate Intercom Function (A)
This function controls the distribution of aircraft radio within the intercom, as well as passenger intercom
muting, when in the “ALL” intercom mode. In the “standard 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
positions will hear aircraft radios.
When “Intercom” function is toggled (hold TEL button) into “Alternate Intercom Function,” the
passengers will NOT hear aircraft radios, even in the All intercom mode. They will be able to converse
with the crew. However, when the aircraft radio becomes active, the intercom audio from the passengers is
muted, allowing the crew to focus on the radio. The passengers will still be able to talk to each other.
Pressing TEL button again switches the intercom back to “Standard Intercom Function.”
Alternate Intercom mode is announced at power up, unless the power on announcement has been defeated.
3.11.2 Monitor (B)
Pressing Monitor (AUX) will activate or deactivate the COM radio monitor function. When the Monitor
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.
To activate the Monitor function press and hold AUX, until audio announces “Monitor on,” and the same
button again to deactivate. The unit announces“Monitor off” when deactivated.
NOTE: This mode is NOT remembered through power cycles, to prevent inadvertent blocking of desired
audio on your next trip.
3.11.3 Music (C)
The Music function button (C) allows you either send the music 1 input to all intercom stations, all of the
time, or have other distribution rules apply to your music inputs.