3
PCD7100-I Pilot Guide
Rev. 2
1.3.2 IntelliVox
® VOX-Squelch
No adjustment of the
IntelliVox
® squelch control is necessary. Through inde-
pendent signal processors on each microphone, the ambient noise appearing
in all 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 humming
or whistling in monotone may be blocked after a few moments.
For best performance, the headset microphone must be placed within ¼ inch
of your lips, preferably against them. It is also a good idea to keep the micro-
phone out of a direct wind path. Moving your head through a vent air stream
may cause the
IntelliVox
® to open momentarily. This is normal.
For optimum microphone performance, PS Engineering, Inc. recommends
installation of a leather Microphone Muff Kit from Oregon Aero (1-800-888-
6910). This will not only optimize VOX performance, but will improve the
overall clarity of all your communications. If you experience clipping while
using the IntelliVOX®, remove the foam mic cover.
1.3.3 CD Music and Soft Mute Control
The right-side volume knob controls the loudness of the internal CD player.
The volume knob controls the CD music volume only, it has no effect on the
intercom or radio volume, or the secondary music input level.
This knob is also the Soft Mute control for the CD player. Normally, the mu-
sic is instantly muted during radio or intercom conversation, and returns
gradually to full volume when conversation stops. Pushing the knob once
will inhibit the soft mute, enabling a “Karoake” mode, where the music re-
mains at he normal level for a sing-along. Push again to return to a soft mut-
ing mode.
1.3.4 Mono headsets in Stereo Installation
Plugging a monaural headset into the pilot or copilot jacks has no effect other
than there will be no stereo left and right separation. Since all passenger
headsets are connected in parallel, if a monaural headset is plugged in to a
PCD7100 Stereo installation, one channel will be shorted. Although no dam-
age to the unit will occur, all stereo-equipped passengers will lose one chan-
nel. PS Engineering modifies headsets to add stereo capability, using high-
fidelity speakers. Contact factory for details (1-865-988-9800 or www.ps-
engineering.com).
1.3.5 Intercom
Modes
On the left side of the intercom-versions is a 3-position mode switch that
allows the pilot to tailor the intercom to best meet the current cockpit situa-
tion.
I
SO
:
(Up Position): The pilot is isolated from the intercom and is connected
