PS Engineering PMA8000G System Installation And Operation Manual - page 24
PS Engineering
PMA8000G IntelliAudio Audio Selector Panel With flightmate®
Installation and Operator’s Manual
200-890-0912
Page 3-3
Rev. 7, July 2017
NOTE: IntelliAudio requires stereo headsets in pilot and copilot locations with correctly oriented left and
right ear cups.
3.2.1.4
Monitor Mode (S/N DG1199 and above)
The Monitor Mode causes the audio from a primary radio (selected for transmit)
mute the secondary radio (selected for listen only) when the primary radio is
receiving a signal. This allows the crew to copy weather but still hear ATC
clearly. Press the COM button on secondary radio until “Monitor ON” is heard
in
the headset to activate the Monitor mode. The secondary COM button will blink
in
Monitor mode. NOTE: activating the monitor mode will turn on COM receive audio if not already selected.
3.3
Audio Selector (4)
Communication audio from the other radio, not selected for transmit, can be heard by pressing the associat-
ed receive button. You will always hear the audio from the selected transceiver.
Navigation receiver audio is selected through five momentary, push-button, backlit switches.
The users can identify which receivers are selected by noting which green switch LEDs are lit. Navigation
aid audio push buttons are labeled Nav 1, Nav 2, MKR (Marker), ADF, DME and AUX (auxiliary). DME
audio (if present) will come through when the AUX button is selected. When one of these buttons is
pressed, the mode is active, and the LED will illuminate. Press the switch again and it will be "off" and
remove that receiver from the audio output.
In SPLIT mode, only the pilot will hear selected navigation audio.
3.4
Speaker Amplifier (5)
The SPR switch will place all selected audio on the cockpit speaker when this switch is selected. Except for
the unswitched audio, the speaker amplifier is not active in the "Split Mode”.
Unswitched audio, (the inputs dedicated to autopilot disconnect, altimeter warning, etc.) will come through
the speaker regardless of the speaker button position.
Depending on installation, important audio annunciations such as radar altimeter or autopilot disconnect
will come over the speaker even if it is not selected, while other unswitched, but muted inputs, such as GPS
alerts, will only be present if the SPR button is selected. Consult your professional avionics installer for
these important configuration details.
3.4.1
Public Address Function
To access PA function, press and hold the SPR button for more than 1 second. The SPR button will blink,
indicating PA mode is active. The pilot microphone will be heard on the speaker when the pilot PTT is
used. The copilot can continue to use the selected com radio while the pilot will now be heard over the
speaker. During Public Address, the SPR button will flash. To exit PA mode, push and hold SPR again or
cycle power on the audio panel.
3.5
Marker Beacon Operation (10)
The Marker Beacon Receiver uses visual and audio indicators to alert you when the aircraft passes over a
75 MHz transmitter.
The Blue lamp, labeled “O”, is the Outer Marker lamp and
has an associated 400-Hertz 'dash' tone. The lamp and
tone will be keyed at a rate of two tones/flashes per se-
cond when the aircraft is in the range of the Outer Marker
Beacon.
The Amber lamp, labeled “M”, is the Middle Marker lamp and is coupled with a 1300 Hertz tone. It is
keyed alternately with short 'dot' and long 'dash' bursts at 95 combinations per minute.
The White lamp, labeled “I”, is the Inner marker and has a 3000 Hertz 'dot' tone. The lamp and tone will be
keyed at a rate of six times per second.
The audio from the Marker Beacon Receiver can be heard by selecting the "MKR" push-button switch. To
adjust the volume level, there is a service adjustment located on the top of the unit.
COM 2