Intercom Operation; Intercom Volume Control - PS Engineering PAC45 System Pilot's Manual And Operation Manual

Intercom Operation

IntelliVox® Intercom VOX-Squelch
No adjustment of the IntelliVox® squelch control is necessary. Through
three individual signal processors, the ambient noise appearing in all six
microphones is constantly being sampled. Non-voice signals are blocked.
When someone speaks, only their microphone circuit opens, placing their
voice on the intercom.
The system is designed to block continuous tones; therefore people hum-
ming or whistling in monotone may be blocked after a few moments.
For consistent performance, any headset microphone must be placed within
¼-inch of your lips, preferably against them. (ref: RTCA/DO-214A,
§1.3.1.1 (a)).
NOTE
It is also a good idea to keep the microphone out of a direct wind path.
Moving your head through a vent 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). It loves aircraft noise! Therefore, it may not recognize
speech and clip syllables in a quiet cabin, such as in the hangar, or without
the engine running. This is normal.
For optimum microphone performance, PS Engineering recommends instal-
lation of a Microphone Muff Kit from Oregon Aero (1-800-888-6910). This
will not only optimize VOX performance, but will improve the overall clar-
ity of all your communications.
Push to talk intercom (PTT ICS)
Pressing the intercom volume knob (ICS VOL) will place
the system into the Push-to-talk (PTT for Inter-com use)
mode. This will disable the voice activation (VOX) and
require that the external push to talk intercom buttons for
each position be used to speak on the intercom.
Push the knob again and the systems toggles back to
voice activation. The mode is shown by the green indica-
tion in the text.

Intercom Volume Control

The intercom volume control knob adjusts the loudness of the intercom for
the intercom stations(s) connected to the audio controller panel. It has no
effect on selected radio levels, or music input levels.
In a single control panel installation the volume control adjusts pilot, copi-
lot, and any passengers.
Revision 2 PAC45 Pilot Guide 202-045-0100 Page 5