PS Engineering PMA450 Pilot’s Guide - Manual (Page 5)

202-450-0000 Page 5 Nov. 2014 PMA450 Pilot Guide
NOTE: Monitor Mode and Spatial Audio Processing (IntelliAudio) are mu-
tually exclusive – entering one mode will cancel the other.
Navaid Selection (4)
VHF Navigation receivers can be selected directly from the front
panel with the N1 and N2 (VHF Navigation receiver 1 and 2) but-
tons. The selected source is indicated by a green LED.
Additional navigation aid or other audio sources can be selected
using the LCD menus.
Press the top line select RADIO → SWITCHED INPUTS, → and
desired audio source.
NOTE: Switched Inputs can be re-
named at the configuration set up. See
page 13 for more information.
In SPLIT mode, only the pilot will
hear selected navigation audio.
Speaker Amplifier (7)
To activate the PMA450 cockpit
speaker output, press and hold the
bottom line-select button (SPR)
for 1 second or until SPR appears
in the display.
In “Split Mode” audio that the
pilot hears will also be present in
the speaker.
Unswitched audio #1 & #2, (the inputs dedicated to autopilot disconnect,
altimeter warning, etc.) will come through the speaker regardless of the
speaker button position.
Depending on installation, important audio annunciations such as radar al-
timeter or autopilot disconnect will come over the speaker even if it is not
selected, while other unswitched, but muted inputs, such as GPS alerts, will
only be present if the SPR button is selected. Consult your professional avi-
onics installer for these important configuration details.
Public Address Function
To access PA function, press and hold the center line select button for more
than 1 second, until the display
changes to PUBLIC ADDRESS.
When the pilot is speaking on
the PA, all microphones except
for the Pilot will be disabled for