PS Engineering PMA8000D Installation Manual - Manual (Page 5)

PS Engineering
PMA8000D Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0304 Page 1-2 Rev. 6, Oct. 2014
Warning: Use of non-aviation approved cellular telephone equipment may be prohibited by FCC regulation.
PS Engineering is not responsible for unauthorized airborne use of cellular telephones.
For airborne use, the PMA8000D must be interfaced with an approved system.
There are five unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar altime-
ter warning, with the fifth unswitched input through a front-mounted utility jack, when it is configured to act
as a fifth unswitched input. Unswitched input 3 is adjustable, see page § 2.4.8
Pushbuttons select the receiver audio source provided to the headphones. A SPR button allows the user to
listen to the receiver(s) selected on the cabin speaker. Except for the unswitched inputs, all speaker audio is
muted during transmit. Unswitched inputs 1, 3, and 4 are always presented to the aircraft speaker.
Unswitched input 2 will be presented to the speaker when the front panel SPR push button has been select-
ed. Pushbutton switches select one of the communication transceivers.
A fail-safe mode connects the crewmembers’ headphone and microphone to COM 1 if power is removed for
any reason, or if the power switch is placed in the Off (Fail-safe) position.
NOTE: Both crew members are connected to COM 1 in fail-safe. There is no priority, and in some cases
microphone loading may make it necessary to unplug one crew member’s microphone for optimum trans-
mission quality.
A voice activated (VOX) intercom is included in the PMA8000D. This system has PS Engineering’s patent-
ed IntelliVox® circuitry that eliminates manual adjustments. The intercom system incorporates pilot isolate,
all and crew modes, two independent stereo music inputs with "SoftMute™". Intercom volume control is
through two concentric front panel knobs and a pushbutton intercom mode switch. The small volume knob
controls the intercom level for the pilot and copilot, while the large knob on the copilot audio panel controls
the passenger intercom volume. Intercom squelch is automatic.
A 3-light, 75 MHz Marker Beacon receiver is integrated in each PMA8000D. This provides the necessary
Marker Beacon lights and audio indications necessary for that portion of an Instrument Landing System
(ILS) approach. A pushbutton labeled MKR allows the pilot select high or low sensitivity as well as test and
mute modes.
In the PMA8000D, a Bluetooth® wireless interface is available for wireless telephone and music connec-
tion.
1.4 APPROVAL BASIS
FAA TSO Approval.
The PMA8000D-series Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers) and
TSO C35d (Marker Beacon Receivers), ETSO C50C/ and 2C53d.
All systems comply with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (Marker
Beacon Receivers), ED-14C/DO-160C (Environmental Conditions and Test Procedures for Airborne
Equipment), ED12B/DO-178B, Level D (Software Considerations for Airborne Equipment) and ED-
18/DO-214 (Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft
Audio Systems).
Operation is subject to the following conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired opera-
tion.