PS Engineering
PMA8000BT Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0702
Page 3-8
Rev. 1, Oct. 2010
3.11 Smart Function Keys (SFK)
With Virtual Tech Support, the configuration process is self-directed. SFK annunciations are heard by the
pilot and copilot positions only. SFK annunciations will be heard by the copilot, even when the audio
panel is in pilot isolate mode. These annunciations will be stopped by any audio received on the com radio
selected for transmit.
Function A
AUX
Function B
MUTE
Function C
SPR
Alternate Intercom
mode
Monitor Mode
Music Distribution
State 1
State 2
State 1
State 2
State 1
State 2
State 3
“Alternate
intercom
function”
“Standard
Intercom
Function”
“Monitor
on”
“Monitor
off.”
“
Standard
music
distribution”
“Alternate
music
distribution”
“Music 1 all
headsets”
Table 3-2 – Smart Function Key Functions, PMA8000BT
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 “Function” as-
signments.
To use these function keys A, B, C – press and hold “F” and then press the desired key, “A”(AUX) “B”
(Mute) or “C” (SPR).
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 multiple music sources available to the PMA8000BT. Music 1 input can be streamed from a
Bluetooth source, 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 connector, only (Pins 26 and 27, J2)
3.11.1 Function “A” (Alternate Intercom Function)
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.
