IFD400 Series Pilot Guide
4-2 Aux Subsystem
AUDIO TAB
The AUDIO tab provides control and display of all system audio-
related features such as radio volume, squelch settings, satellite
radio channel tuning and com presets.
VOLUME CONTROL
Each subsystem for which the IFD has an ability to control
volume (and squelch and ID on/off) is displayed as a separate
line item when the “Volume Control” LSK is active.
The bottom right knob controls row selection, volume, squelch, ID
on/off. If configured for satellite radio, the knob also provides
mute control. To select one of the volume controls, turn the outer
knob. To adjust the volume, turn the inner knob. To toggle
squelch†, ID, or mute (as applicable) push the knob button (a 1-2
second delay is possible).
Volume Control (IFD440 Shown)
Touch control can also be used to make all those adjustments
(e.g. selecting a row by touching, changing a volume level by
touch dragging the bar, turning squelch on/off by tapping the
correct area on the display, etc).
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