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¼-inch of your lips, preferably against them. (ref: RTCA/DO-214, 1.3.1.1
(a)). It is important to have the microphone element parallel to your mouth,
and not twisted inside the cover.
Note: For optimum microphone performance, we recommend use of a Mi-
crophone
Muff
Kit
www.oregonaero.com ). This will not only optimize VOX performance, but
will improve the overall clarity of all your communications.
You should also keep the microphone out of a direct wind. Moving your
head through an air stream may cause the IntelliVox® to open momentarily.
This is normal. The IntelliVox® is designed to work with normal aircraft
cabin noise levels (70 dB and above). Therefore, it may not always recognize
speech and clip syllables in a quiet area, such as in the hangar, or without the
engine running. This is also normal.
Intercom Volume Control (7)
The small volume control knob adjusts the loudness of the intercom for the
pilot and copilot. It has no effect on selected radio levels, music input levels
or passengers' volume level.
The larger, outer volume control knob controls intercom volume for the pas-
sengers. It has no effect on radio or music levels.
Mono Headsets in Stereo Installation
The pilot and copilot positions work with stereo or mono headsets. If a mon-
aural headset is plugged in to a PMA8000C Stereo installation, one channel
will be shorted and all passengers will lose one channel unless they switch to
the "MONO" mode on the headset.
NOTE: Failsafe audio for unswitched may not be present if a mono headset
is used in the pilot location.
Intercom Modes (8)
The intercom has three modes. The description of the intercom mode func-
tion is valid only when the unit is not in the "Split" mode. Then, the pilot and
copilot intercom is controlled with the Mute button.
This button cycles through the intercom modes, from top to bottom and then
back up.
I
: The pilot is isolated from the intercom and is connected only to the air-
SO
While in ISO Mode, the pilot can elect to hear music #1. First, be sure that
Page 4
from
Oregon
Aero
craft radio system. He hears the radios (and side-
tone during radio transmissions). The copilot and
passengers will hear the music sources as config-
ured by the audio panel configuration Function
keys. See page 11—Smart Function Keys for more
details.
202-890-0303
Rev. 3
(1-800-888-6910,
PMA8000C
Pilot Guide
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