PS Engineering PMA8000C Installation Manual - Manual (Page 28)

PS Engineering
PMA8000C Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0303 Page 3-7 Rev. 3, May 2014
A patch cord is available with 2.5 mm to 3.5 mm (3/32 to 1/8”) adapter cord (PS Part Number 425-006-
2535) to connect music devices with 3.5 mm, 3-conductor cables..
3.9.1 Audio Advisory Input
The front jack can be used as a priority advisory input for auxiliary systems such as a GPS terrain advisory
or portable traffic watch system. To prevent radio or intercom from muting this input, press the “Mute”
button.
3.9.1.1 Smart Jack Function
When the PMA8000C has a signal on music #1 input coming in from the rear connector, the front panel
jack automatically becomes a Priority Advisory input, and is heard in the crew headphones.
NOTE
The front jack is no substitute for the certified installation of alerts such as the GPS waypoint or autopilot
tones. These still must be hard wired into the back by your installer. The front jack input will be muted by
radio or intercom unless music is actively playing in the rear connector. Consequently, it is possible that an
alert may be missed unless the mute mode is deselected.
3.10 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 select-
ed for transmit.
Function A
COM 3
Function B
AUX
Function C
MUTE
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 mu-
sic distribution”
“Alternate
music distri-
bution”
“Music 1 all
headsets”
Table 3-2 – Smart Function Key Functions, PMA8000C
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 PMA8000C from doing its main job.
Looking at the front panel you’ll notice that the COM 3, AUX, Mute and SPR buttons have “Function” as-
signments.