Cessna T182 1982 Pilot Operating Handbook page 214

8
AUDIO CONTROL PANELS
PILOTS OPERATING HANDBOOK
SUPPLEMENT
A special feature of the audio control panel used when one or two
transmitters are installed is separate control of N A V and COM audio from
the N A V / COM radios. With this installation, the audio selector switches
labeled NAV, 1 and 2 select audio only from the navigation receivers of the
NAV/COM radios. Communication receiver audio is selected by the
switches labeled COM, AUTO and BOTH. Description and operation of
these switches is described in figure
1.
When the audio control panel for three transmitters is installed, audio
from both N A V and COM frequencies is combined, and is selected by the
audio selector switches labeled N A V / COM, 1, 2 and 3.
COM AUTO AUDIO SELECTOR SWITCH
The audio control panel used with either one or two transmitters
incorporates a three-position toggle switch, labeled COM AUTO, which is
provided to automatically match the audio of the appropriate NAV / COM
communications receiver to the radio selected by the transmitter selector
switch.
COM BOTH AUDIO SELECTOR SWITCH
The audio control panel used with either one or two transmitters
incorporates a three-position toggle switch, labeled COM BOTH, which is
provided to allow both COM receivers to be monitored at the same time.
AUTO AUDIO SELECTOR SWITCH
The audio control panel used with three transmitters incorporates a
three-position toggle switch, labeled AUTO, which is provided to automat­
ically match the audio of the appropriate NAV/COM receiver to the
selected transmitter.
ANNUNCIATOR LIGHTS BRIGHTNESS AND TEST SWITCH
The audio control panel used with either one or two transmitters
incorporates a three-position toggle switch with NITE (up) and DAY
(middle) positions to control the brightness level of the marker beacon
indicator lights, and the BC and RN Nav indicator lights (when installed).
In the TEST (down) position, all annunciator lights (Mkr Bcn, BC and RN)
will illuminate full bright to verify lighting test.
NOTE
A potentiometer is installed inside the audio control panel
to provide further minimum light dimming capabilities.
Refer to the appropriate Avionics Service/ Parts manual
for adjustment procedures.
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