Page 8
202-228-0300 PAR200B
Pilot Guide
To activate the cockpit speaker, push and hold the
N2
for about 1 second or
until the display shows
SPR
. Repeat to turn the speaker off.
Radio Sidetone & Radio Squelch Adjustment
To change the automatic squelch
threshold and sidetone level for
the Trig TY91 transceiver: Enter
the Radio Volume mode by press-
ing the
ICS
button until the setup
screen appears
Turn the rights side outer knob to
set the squelch threshold to low
(weak signals open), medium
(normal operation) or high (blocks RF noise, requires stronger signals to
open).
Turn the right side smaller inner knob to increase or decrease the radio side-
tone. Typically, the radio sidetone is adjusted slightly lower volume than he
received radio signals.
Intercom Operation (8)
IntelliVox® VOX-Squelch
No manual adjustment of the
IntelliVox
® squelch control is possible.
Through individual signal processors, the ambient noise appearing in all four
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 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. Mov-
ing 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 airplane 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 clari-
ty of
all
your communications.
