PS Engineering PMA8000D Pilot’s Guide - Manual (Page 4)

Page 4 202-890-0304 Rev. 2 PMA8000D Pilot Guide
For consistent performance, any headset microphone must be placed within
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 from Oregon Aero (1-800-888-6910,
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
crewmember connected to the audio panel. 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 on the copilot audio panel only. It has no effect on radio or music
levels. The pilot panel outer knob has no effect.
Mono Headsets in Stereo Installation
The pilot and copilot positions work with stereo or mono headsets.
Intercom Modes (8)
The “ICS” pushbutton switch on the left side of
the panel provides the selection of the intercom
modes.
This button cycles through the intercom modes,
from top to bottom, then bottom to top as: ISO,
ALL, CRW and CRW, ALL, ISO. An LED
shows which mode is currently active.
While in ISO Mode, the pilot can elect to hear music #1. First, be sure that
the ISO mode is selected. Then press and hold the COM 3 button, 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. This feature is not remembered through power cycles.
The following charts show the audio presented to the Pilot, Copilot, and pas-
sengers on an intercom expansion unit.