PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0403
Page 3-8
Rev. 4, Jan. 2011
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.
.
Table 3-2 - SFK Functions, PMA8000B-MP3
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-MP3 from doing its main
job.
Looking at the front panel you’ll notice that the Mon 1, Mon 2, Mute and SPR buttons have “Function”
assignments.
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-MP3. 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 con-
nector, only (Pins 26 and 27, J2)
Function A
Mon 2
Function B
MUTE
Function C
SPR
Intercom mode
Music 1 Distribution
ICS Mode Dependence
State 1
State 2
State 1
State 2
State 1
State 2
“Standard
Intercom
Function”
“Alternate
intercom
function”
“Music
1
crew only.”
“Music 1 all
headsets”
“
Standard
Music
Distribution
“Alternate
music
distribution
”
