PS Engineering
PMA8000BT Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0702 Page 2-8 Rev. 1, Oct. 2010
2.5.1 Entertainment Inputs
The PMA8000BT has two INDEPENDENT music inputs, PLUS a front mounted jack that is connected to
Entertainment 1. Entertainment input number 1 is J2 pins 23 (left channel) and 24 (right cha nnel), with
respect to pin 25, and Entertainment number 2 is connected to 26 (left chann el), 27 (right channel), with
respect to 28.
PMA8000BT (050-890-0702) has wireless connectivity to stream music from a paired Bluetooth device.
This stream is distributed as Music 1. Refer to §3.11.3 for more information.
NOTE
Use t h e l ow level output of an y additi ona l en ter t ai nmen t device to conn ect t o th e a u-
dio pa nel. Maxi m um sign al l evel is 3 VAC p-p. DO NOT use a spea ker-level output,
th is wi l l cause i nter nal da ma ge in th e audi o pa nel .
2.5.2 Entertainment muting
The PMA8000BT-system incorporates a four-mode "Soft Mute™" system. This will mute the entertain-
ment devices during ICS and/or radio conversation. See Section 3.8 for more information.
Any signal appearing in the hard wired unswitched audio inputs will always mute the en tertainment
sources, even though the passengers may not hear the audio tone itself.
Press the Mute switch to activate the four Karaoke modes (disabling crew SoftMute™). This allows the
pilot to place the entertainment into the background while having the r adios in the foreground. This
eliminates the constant interruption of the music while still having the radios a priority.
CAUTION
Local oscillators and internal signals from entertainment equipment can cause und esired interference with
other aircraft systems. Before takeoff, operate the entertainment devices to determine if there is any a d-
verse effect within the aircraft systems. If any unusual operation is noted in flight, immediately switch off
the entertainment devices.
All additional entertainment devices must be switched off for both takeoff and landing.
2.5.2.1 Entertainment 2 Mute (J2 Pin 13 & 14)
Connecting J2 pin 13 to pin 14 (or ground) through a SPST switch places the entertainment #2 music
source into the Karaoke Mode. In this mode, incoming music and intercom conversation will not mute the
music for the passengers’ intercom net. This allows uninterrupted music during casual conversation and
at times when radio communications are of lesser importance.
If desired, the AUX button can act as the passengers’ mute control. Connect J2 pin 18 (AUX logic) to J2
pin 13 (Entertainment. 2 Mute inhibit).
2.5.3 Configuring Music Input with Function Keys
The two music inputs can be configured by the user from the front panel (see section 3.10). There are
three configurations available, independent, ICS mode dependent, and single input (music 1 to all sta-
tions).
If the inputs are independent, Input #1 (and the front jack) is provided to the pilot and copilot. Muting
(SoftMute™) is controlled by the front panel “mute” button. Music 2 is provided to the passengers at all
times, with muting controlled by an external switch (see § 2.5.2.1).
If the inputs are intercom mode dependent, input 1 goes to the pilot, copilot, and all passengers when the
intercom is in the “ALL” mode. In “ISO” mode, the copilot and passengers will hear music input 1. Music
2 is ONLY active in CREW mode, and then provided only to the passengers. The externally switched pas-
senger SoftMute™ control becomes active in CREW.
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