PS Engineering PMA8000B Pilot’s Guide - Manual (Page 3)

202-890-0202 Page 3 May 2012 PMA8000B Pilot Guide
Unless the audio panel is in “split” mode, the PMA8000B gives priority to
the pilot’s radio Push-To-Talk (PTT).
If the Monitor function is activated, the audio from this radio will be muted
when the primary radio (selected for transmit) is receiving a signal.
In TEL mode, the pilot is connected to the cell phone, but still hears the
COM radios selected. The radio PTT will switch the mic to the selected com,
and allow continued aircraft communications to continue. (See Page 6—
TEL—for more details)
Audio Selector (4)
These buttons select the
switched navigation receivers.
The DME input (if present) is
also shared with AUX. In SPLIT
mode, only the pilot will hear
selected navigation audio.
Cockpit Speaker (5)
This switch will place all selected audio on the cockpit
speaker when this switch is selected. In “Split” mode, the
speaker carries the same audio as the pilot.
Depending on installation, important audio alerts such as
radar altimeter or autopilot disconnect will come over the speaker even if it
is not selected, while other unswitched inputs, will only be present if the
SPR button is selected. Consult your professional avionics installer for these
important configuration details.
Intercom Operation
IntelliVox® VOX-Squelch
IntelliVox® is PS Engineering’s proprietary intercom squelch control.
Through the use of digital processors, each microphone is monitored, and
opens instantly when human speech is detected. This results in seamless con-
versations aboard the airplane for crew and passengers, without syllable clip-
ping or fatigue-inducing noise.
No adjustment of the IntelliVox® squelch control is necessary. There is no
field adjustment. The system is designed to block continuous tones, therefore
people humming or whistling in monotone may be blocked after a few mo-
ments.
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,