Cessna 172P - Audio Control Panels

SUPPLEMENT
AUDIO CONTROL
PANELS
sEcfloN
I
GENERAL
io control
panels
(s
this
a
uPon
how
ma,ny
The
o
of both
audio
con
e're
discussed in the
following
paragraphs'
TF,ANSMITTER SELECTOR
S\I¡ITCH
corresponding
to tho
desired
transmitter.
The
aotion
of selecting
a
particular
transmitter
using
the transmitter
selector
switch
simultaneously
selects
the audio amplifior
associated
with
that transmitter
to
provide
speakor
audio.
For example,
if the
number
one
transmitter
is selected, the audio
amplifier
in
the
number
one
NAV/COM
is also selected
and
is
used
for ALL speaker
audlo.
Headset
audio
is not
affeoted by audio
amplifier operation.
PILOT'S
OPERATING
HANDBOOK
SUPPLEMENT
9
AUDIO
CONTROL
PANELS
AUDIO SELECTOR SWITCHES
Both audio control
panels
(see
figure
1) incorporate
three-position
toggle-type audio selector switches
for iudividual
control
of
the audio
systems
installed in the airplane.
These switches
allow
receiver
audio
to
be directed
to the airplane
spea,ker
or to a
headset,
and
heard eingly or in
combination
with
other rocsivers.
To
hear a
particular
receiver on
the
airplane
speaker,
place
that
receiver's
audio selector
switch
in the
up
(SPEAKER)
positiõn.
To
listen
to a receiver
over a
headset,
place
that
receiver's
audio
selector
switch
in the down
(PHONE)
position.
The
oentor
(OFF) position
turns off all audio from
the
associated
receiver.
NOTE
Volume level is adjusted
using the individual
receiver
volume
controls on
eacb radio.
3O May 1980
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