9800 Martel Road
Lenoir City, TN 37772 www.ps-engineering.com
PMA8000B
Audio Selector Panel
Marker Beacon Receiver
Stereo Intercom System
Flying Never Sounded So Good! ®
Pilot’s Guide
and
Operation Manual
202-890-0202 |
Rev. 12 May 2012 |
Covered under one or more of the following Patent No. 4,941,187, 5,903,227, 6,160,496, 6,493,450 FAA-Approved: TSO C50c, C35d EASA-Approved ETSO C50c, 2C35d
For units with serial number AB05403 and above
May 2012 PMA8000B Pilot Guide |
202-890-0202 |
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This pilots guide provides operating instructions for the PMA8000B Audio Panel. Please read it carefully before using the equipment so that you can take full advantage of its capabilities.
This guide is divided into operating sections such as Transceiver Selection, Audio Selector, Intercom, and Marker Beacon Receiver, and special functions. The center section provides a handy reference that you can remove.
PMA8000B controls
Power Switch (1) (EMG-Fail Safe Operation)
The power switch controls all audio selector panel functions, intercom and marker beacon receiver.
When the unit is turned off, either by pressing the volume control, or if the breaker is pulled removing power, the PMA8000B is in Fail-Safe mode. In this mode, the pilot’s headset is connected to COM 1 for transmit and receive, and connected to unswitched input #1 for priority audio alerts. The fail safe audio will only be heard in the left ear of a stereo headset.
Receiver selection
Transmitter selection
Communications Transmit (XMT) Selection (2)
To select Com 1 or Com 2 for transmit, press the button on the bottom row, next to the XMT legend. The bottom and top button indicators light, showing that you will transmit and receive on the selected radio.
Communications Receive (RCV) Selection (4)
To listen to the other radio, press the upper button, in the RCV (receive) section. When a com is selected for receive, it will stay selected until manually deselected, even if you select, and then deselect its transmitter.
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Unless the audio panel is in “split” mode, the PMA8000B gives priority to the pilot’s radio Push-To-Talk (PTT).
If the Monitor function is activated, the audio from this radio will be muted when the primary radio (selected for transmit) is receiving a signal.
In TEL mode, the pilot is connected to the cell phone, but still hears the COM radios selected. The radio PTT will switch the mic to the selected com, and allow continued aircraft communications to continue. (See Page 6— TEL—for more details)
Audio Selector (4)
These buttons select the switched navigation receivers. The DME input (if present) is also shared with AUX. In SPLIT mode, only the pilot will hear selected navigation audio.
Cockpit Speaker (5)
This switch will place all selected audio on the cockpit speaker when this switch is selected. In “Split” mode, the speaker carries the same audio as the pilot.
Depending on installation, important audio alerts such as
radar altimeter or autopilot disconnect will come over the speaker even if it is not selected, while other unswitched inputs, will only be present if the SPR button is selected. Consult your professional avionics installer for these important configuration details.
Intercom Operation
IntelliVox® VOX-Squelch
IntelliVox® is PS Engineering’s proprietary intercom squelch control. Through the use of digital processors, each microphone is monitored, and opens instantly when human speech is detected. This results in seamless conversations aboard the airplane for crew and passengers, without syllable clipping or fatigue-inducing noise.
No adjustment of the IntelliVox® squelch control is necessary. There is no field adjustment. The system is designed to block continuous tones, therefore people humming or whistling in monotone may be blocked after a few moments.
For consistent performance, any headset microphone must be placed within ¼-inch of your lips, preferably against them. (ref: RTCA/DO-214, 1.3.1.1 (a)). It is important to have the microphone element parallel to your mouth,
May 2012 PMA8000B Pilot Guide |
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and not twisted inside the cover.
Note: For optimum microphone performance, we recommend use of a Microphone Muff Kit from Oregon Aero (1-800-888-6910, www.oregonaero.com ).
This will not only optimize VOX performance, but will improve the overall clarity of all your communications.
You should also keep the microphone out of a direct wind. Moving your head through an air stream may cause the IntelliVox® to open momentarily. This is normal. The IntelliVox® is designed to work with normal aircraft cabin noise levels (70 dB and above). Therefore, it may not always recognize speech and clip syllables in a quiet area, such as in the hangar, or without the engine running. This is also normal.
Intercom Volume Control (7)
The small volume control knob adjusts the loudness of the intercom for the pilot and copilot. It has no effect on selected radio levels, music input levels or passengers' volume level.
The larger, outer volume control knob controls intercom volume for the passengers. It has no effect on radio or music levels.
Mono Headsets in Stereo Installation
The pilot and copilot positions work with stereo or mono headsets. If a monaural headset is plugged in to a PMA8000B Stereo installation, one channel will be shorted and all passengers will lose one channel unless they switch to the “MONO” mode on the headset.
Intercom Modes (8)
The intercom has three modes. The description of the intercom mode function is valid only when the unit is not in the "Split" mode. Then, the pilot and copilot intercom is controlled with the Mute button.
This button cycles through the intercom modes, from top to bottom and then back up.
ISO: The pilot is isolated from the intercom and is connected only to the aircraft radio system. He hears the radios (and sidetone during radio transmissions). The copilot and passengers will hear the music sources as configured by the audio panel configuration Function keys. See page 11—Smart Function Keys for more details.
While in ISO Mode, the pilot can elect to hear music #1. First, be sure that the ISO mode is selected. Then press and hold the TEL button, then hold the ICS mode button for more than one second. The ICS indicator will blink slowly to indicate music is present in ISO. The music muting will be the selected mode.
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PMA8000B Pilot Guide Rev. 6 |
ALL: All parties will hear the aircraft radio and intercom. Crew will hear Music 1, passengers can hear Music 1 or 2. The music mutes in accordance with the muting mode selected.
CRW: (Crew) Pilot and copilot are connected on one intercom channel and have exclusive access to the aircraft radios. The passengers have their own intercom. The music that the crew and passengers will hear is determined by the Smart Function Keys.
Marker Beacon Operation (9)
The Marker Beacon Receiver uses visual and audio indicators to alert you when the aircraft passes over a Beacon transmitter.
The Blue, Outer Marker lamp has an associated 400-Hertz 'dash' tone. The lamp and tone will be keyed at a rate of two tones/
flashes per second when the aircraft is in the range of the Outer Marker.
The Amber, Middle Marker lamp is coupled with a 1300 Hertz tone, keyed alternately with short 'dot' and long 'dash' bursts at 95 combinations per minute.
The White, Inner marker lamp has a 3000 Hertz 'dot' tone, and will be keyed at a rate of six times per second.
Marker Beacon Receiver audio can be heard by selecting the "MKR" push-button switch. There is a service adjustment located on the top of the unit to adjust the volume if desired.
The MKR button located next to the indicator lights is
used to set the receiver sensitivity and to test the indicator lamps mute the marker audio.
Pressing the MKR button for one second will cause the marker audio to mute. The next beacon received will re-activate the audio.
Holding the MKR button for one second also activates marker test, labeled "T/M" and illuminates all three lamps simultaneously to confirm the lamps (internal and external) are working. Releasing the button returns to the last sensitivity.
Split Mode
To activate the split mode, push both the COM 1 and COM 2 XMT (bottom) buttons at the same time. All four indicators will come on. In the split mode, the pilot is on COM 1, while the copilot is on COM 2.
May 2012 PMA8000B Pilot Guide |
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