PS Engineering PMA8000C Installation Manual - Manual (Page 14)

PS Engineering
PMA8000C Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0303 Page 2-7 Rev. 3, May 2014
4. Install and tighten qty. 4 long thread screws into the lid, and one short screw on the rear.
2.4.12 PA Mute (J2, Pin 12)
Pin 12 of J2 is a TTL logic output that is pulled low during PTT operation.
2.4.13 Miscellaneous Logic Output (J2, Pin 18)
Pin 18 of the J2 connector is pulled to ground whenever the AUX button is depressed. This serves as a con-
trol line for external devices, such as an entertainment system that the pilot wishes to control.
NOTE
J2, Pin 18 should NOT be used if the AUX is going to be used to switch DME or auxiliary audio.
2.4.14 Marker High Sensitivity (J2 Pin 13)
The PMA8000C defaults to LOW marker sensitivity of 1000µVolts. If High marker beacon sensitivity is
desired, J2 Pin 13 can be connected to ground (or J2 pin 14), through a switch, to set the marker beacon
sensitivity to 200 µVolts.
2.5 Intercom wiring
See Appendix C and D for intercom connection configurations. It is critical to the proper operation of this
system to have this connector wiring made in accordance with these diagrams. Use 2- and 3-conductor,
MIL-spec cable as shown. Connect the shields at the audio panel end only, and tie to the audio low inputs as
shown.
NOTE
The audio panel harness can be custom made by PS Engineering, Inc. Simply call the factory or www.ps-
engineering.com to obtain a wire harness work sheet. The harness will be made to your specifications and
fully functionally tested. Harness can be ordered with jack, or without the intercom jacks installed, for easi-
er wire routing through the aircraft.
2.5.1 Entertainment Inputs
The PMA8000C 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 channel), with re-
spect to pin 25, and Entertainment number 2 is connected to 26 (left channel), 27 (right channel), with re-
spect to 28.
PMA8000C (050-890-0303) 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.
N O T E
U s e t h e l o w l e v e l o u t p u t o f a n y a d d i t i o n a l e n t e r t a i n me n t d e v i c e t o c o n n e c t t o t h e a u d i o
p a n e l . M a x i mu m s i g n a l l e v e l i s 3 V A C p -p . D O N O T u s e a s p e a k e r -l e v e l o u t p u t , t h i s
wi l l c a u s e i n t e r n a l d a ma g e i n t h e a u d i o p a n e l .
2.5.2 Entertainment muting
The PMA8000C-system incorporates a four-mode "Soft Mute™" system. This will mute the entertainment
devices during ICS and/or radio conversation. See
Section 3.8 for more information.
Press the Mute switch to activate the four Karaoke modes (disabling crew SoftMute™). Turning down the
entertainment volume allows the pilot to place the entertainment into the background while having the radi-
os in the foreground and eliminates the constant interruption of the music while still keeping the radios a
priority.
CAUTION