PS Engineering PMA8000B Pilot’s Guide - Manual (Page 14)

Page 14 202-890-0202 PMA8000B Pilot Guide Rev. 6
• Radio Mute - Radio will mute music, but intercom will not mute mu-
sic - MUTE LED is OFF. Annunciation is "Radio mute."
• Intercom Mute - Radio will not mute music, intercom will mute mu-
sic - MUTE LED is OFF. Annunciation is "Intercom mute."
• Mute Off - The “Karaoke” mode - music will not mute except during
radio transmissions.- MUTE button LED is OFF. Annunciation is "Mute
off."
When the PMA8000B is turned on, it always begins in “Mute on” mode.
The passengers’ intercom also has a SoftMute™ circuit. If the passengers
hear the radio, or talk on the intercom, the music will mute. If the audio
panel is in CREW mode, then the radio reception will not affect the passen-
ger music.
If the passengers are listening to the music 1 input or front panel input, their
Karaoke Mode is controlled by the front panel “Mute” button. If the passen-
gers are listening to the music 2 input, their Karaoke Mode is activated by an
external switch installed either in the aircraft, or connected to the AUX but-
ton logic output pin on the PMA8000B. Consult your installer for details.
Music 1 Volume
The music level is set at the factory at a comfortable level.
We recommend adjusting the entertainment volume at the
sources. However, the Music 1 volume can be adjusted from
the front panel, if desired, by pressing SPR button.
NOTE: Increasing this music level can increase the amount
of aircraft electrical system noise as well.
The Music 1 volume can be adjusted from the front panel, if desired, by
pressing and holding the Music Volume (SPR) key.
Press the Music Volume (SPR) for more than one second, a tone will be
heard indicating the volume level is changing and the music volume will
begin to change. The volume will either increase or decrease, depending on
the last action. To reverse the volume change, release the
Music Volume
( SPR ) button, and press and hold again, and the volume will change. Con-
tinue to hold until the desired level is reached.
Note: Since it is possible to turn the volume completely off, you may need to
turn the volume up if you don’t hear music when you expected to.
It will take about 12 seconds to go from minimum to maximum volume.
Swap Mode (Switch from Com 1 to Com 2 remotely)
The “swap” button allows you to switch between the COM transmitters
without having to reach up to the audio panel, and is a handy way to switch
to Ground Control when exiting the runway. This optional switch is usually
mounted on the control yoke or a convenient place by the pilot position.