PS Engineering PMA9000EX Installation Manual - Manual (Page 14)

PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-7 Rev. 9, Jan. 2011
2.5.1 Entertainment Inputs
The PMA9000EX has three music sources. Two INDEPENDENT inputs wired into the rear connectors,
PLUS a front mounted jack that is connected to Entertainment 1, and an internal MP3 player that can
store 1 Gigabyte (512 MB before serial number B01094) of digital music files.
Entertainment input number 1 is J2 pins 23 (left channel) and 24 (right channel), with respect to pin 25,
and Entertainment number 2 is connected to 26 (left channel), 27 (right channel), with r espect to 28.
NO T E
Use t h e l ow l evel ou t p u t of a n y a d d i t i on a l en t er t a i n m en t d evi ce t o con n ect t o t h e a u -
d i o p a n el . Ma x i m u m si g n a l l evel i s 3 VAC p - p . DO NO T u se a sp ea k er - l evel ou t p u t ,
t h i s wi l l ca u se i n t er n a l d a m a g e i n t h e a u d i o p a n el .
2.5.2 Entertainment muting
The PMA9000EX-system incorporates a "Soft Mute™" system. This will mute the entertainment devices
during ICS or radio conversation.
The Karaoke mode (disabling crew SoftMute™) is controlled through the data selector on the primary
display. This allows the pilot to place the entertainment into the background while ha ving the radios in
the foreground. This eliminates the constant interruption of the music while still having the radios a prio r-
ity.
CAUTION
Local oscillators and internal signals from entertainment equipment can cause und esired interference with
other aircraft systems. Before takeoff, operate the entertainment devi ces to determine if there is any ad-
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 landi ng.
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 mode control 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 Data Entry Knob
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.
If the inputs are independent, Input #1 (and the front jack) is provided to th e pilot and copilot. Muting
(SoftMute™) is controlled by the front panel “mute” selection on the primary display.
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 passenger SoftMute™
control becomes active in CREW.
If the single-source mode is activated through the data input, the front panel jack (and music 1) is con-
nected to all intercom positions, regardless of the intercom mode. Crew muting is controlled by the front
panel, passenger muting controlled through the switch. See section 3.11 for more details.
2.5.4 Playback button Installation
Internal Recorder can be played back from the front panel by pressing the com radio selected for transmit
(C1 or C2) for 1 second.