IFD500 Series Pilot Guide
System Overview 1-17
BRIGHTNESS CONTROLS
Each IFD has brightness controls to control both the bezel and
the display brightness. Using the controls on the Setup Page, the
user can specify whether brightness is controlled manually, using
cockpit dimming controls, or using ambient light sensor
(photocell) that is embedded in the bezel.
Brightness Controls
Depending on how the installer configured the brightness controls
at time of installation, the “Photocell” setting will typically revert to
the dimming bus setting in low ambient light conditions.
If the IFD appears to be inoperative or non-responsive from a
lighting perspective, check the aircraft instrument lighting control
to ensure it is not set to a night position.
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