PS Engineering PMA6000 Pilot's Manual And Operation Manual page 6

Intercom
Volume Control (6000, 6000M, 6000C, 6000MC)
Figure 4 Volume Controls
The pilot volume control knob adjusts the loudness of inter-
com and music in the pilot's headphones only. It has no effect
on selected radio audio levels. The copilot volume control ad-
Figure 4 Volume Controls
Intercom Mode Table
Mode Pilot Hears Copilot
Hears
A/C Radio Copilot
ISO
Passengers
Pilot Sidetone
Music 1
(during radio
transmission)
Radios Radios
All
Sidetone Sidetone
Pilot Pilot
Copilot
Copilot
Passengers
Passengers
Music 1
Music 1
Radios Radios
Crew
Sidetone Sidetone
Pilot Copilot
Copilot Pilot
Music 1 Music 1
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justs the loudness of the intercom
and music in the copilot headset
only. The passenger volume is
factory set at a comfortable level.
This is a service adjustment that
can be accessed by the avionics
technician. Many general avia-
tion headsets have a built-in vol-
ume control, so volume can be re-
Passenger Comments
Hears
Copilot This mode allows the pilot to
Passengers communicate with the air
Music 1 traffic control without the
copilot or passengers both-
ered by the conversations.
Copilot and passengers can
continue to talk and listen to
music
Radios This mode allows all on
board to hear radio recep-
Sidetone
tion as well as communicate
Pilot
on the intercom. Music and
Copilot
intercom is muted during
Passengers
intercom and radio commu-
Music 1
nications
Passengers A second music source is
Music 2 automatically enabled for
the passengers
PMA6000-Mono Pilot Guide
duced "locally."
Adjusting the VOX-Squelch control
The PMA6000 provides adjustable VOX squelch controls for
the pilot and copilot (the copilot's VOX control also adjusts the
passengers VOX squelch). Since the number of microphones
open at any one time is reduced, the amount of background
noise is diminished. This also allows the use of dissimilar
headsets with the same system. The user can adjust the trip
level of the VOX to fit the individual's voice and mic, which
helps eliminate the frustration of clipping the first syllables.
With the engine running, set the VOX control knob by slowly
rotating the S control knob clockwise until you no longer
QL
hear the engine noise in the headphones. When the micro-
phone is positioned properly near your lips, normal speech lev-
els should open the channel. When you have stopped talking,
there is a delay of about ½ second before the channel closes.
This helps prevent choppy communications.
Intercom Modes
The center switch is a 3-position mode selector that allows the
pilot to tailor the intercom function to best meet the situation.
The description of the intercom mode function is valid only
when the unit is either in the C
Mic Selector switch. When the unit is in the "Split" mode, only
the passengers have intercom function.
I : (Up Position): The pilot is isolated from the intercom and
SO
is connected only to the aircraft radio. He will hear the aircraft
radio reception (and sidetone during radio transmissions). Co-
pilot and passengers will hear the intercom and music on En-
tertainment 1, but not the aircraft radio receptions or pilot
transmissions.
A : (Middle Position): All parties will hear the aircraft radio,
LL
intercom, and music from entertainment input #1. However,
during any intercom communications, the music volume auto-
PMA6000 –Mono Pilot Guide 202-066-0001
1 or C 2 position of the
OM OM
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