BendixKing
AeroPanel 100 Audio Selector Panel
Installation and Operator’s Manual
89000063-011
Page 3-3
Rev. 0, April 2020
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 associated
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” or while transmitting (PTTs
pressed).
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 im-
portant 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 second 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.
A pushbutton is used to set the receiver sensitivity and to test the indicator lamps mute the marker audio.
Short press –
Controls Marker audio on/off. The top indicator (AUD) will light green when selected. The
button is backlit white at all times.
Medium press –
Pressing the MKR
for one second, while beacon audio is active, will cause the marker audio
to mute for that beacon. The next beacon received will re-activate the audio. This will also test the marker
indicator lamps.
