PS Engineering PMA8000B Installation Manual - Manual (Page 30)

PS Engineering
PMA8000B Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0100 Page 3-9 Rev. 13, Dec. 2009
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 PMA8000B from doing its main job.
Looking at the front panel you’ll notice that the TEL, Aux, Mute and SPR buttons have “Function” a s-
signments.
To use these function keys A, B, C – press and hold “F” and then press the desired key, “A” “B” or “C”.
There are three special functions. Function Button “A” is related to the front panel utility jack (J) and tells
the audio panel to treat the jack either as music, or as what we call an unswitched, priority audio source.
Function Buttons “B” and “C” control how music is distributed in your airplane.
There are two music sources available to the PMA8000B. 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)
3.10.5 Function “A”
Serial Number J01861 and above: Function “A” controls the distribution of aircraft radio within the
intercom, as well as passenger intercom muting. 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 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 from the passengers is muted, allowing the crew to focus on the radio.
The passengers will still be able to talk to each other.
Serial Number J01860 and below: Function “A” controls the priority of the front jack (labeled J in the
diagram). When you push Function A, you will hear either “Front Jack Priority” Or “Front Jack Music”
depending on the previously selected mode.
When in Front Jack Priority mode, the jack is configured to present the audio input in the jack to the pilot
and copilot headphones, and that it will NOT be muted like the music.
This function is selected, this audio input will not mute other entertainment sources, unlik e other
unswitched inputs.
If you set the jack up as priority, and then connect music, such as an XM or SIRIUS radio, this will not be
muted by radio and intercom. The passengers will NOT hear this audio, either.