202-890-0702 Page 5Dec. 2016 PMA8000BT Pilot Guide
While in ISO Mode, the pilot can elect to hear music #1. First, be sure that
the ISO mode is selected. 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.
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 min-
ute.
The White, Inner marker lamp has a 3000 Hertz 'dot'
tone, and will be keyed at a rate of six times per sec-
ond.
Marker Beacon Receiver audio can be heard by select-
ing 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 au-
dio.
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
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