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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
Brightness Control
Both manual and automatic (photo sensor) brightness controls are
used to increase or decrease the MCDU display brightness. When
manually selected, a bright/dim bar is displayed in the scratchpad, as
shown in Figure 3--7. The bright/dim bar level is controlled by pushing
BRT or DIM on the MCDU display.
Figure 3- -7
Bright/Dim Bar Level
Following manual adjustment, the photo sensors monitor the ambient
light and maintain the brightness level of the MCDU display over various
lighting conditions. Note that the brightness is adjusted during evening
hours such that, during daylight hours, the display cannot be seen.
A28- - 1146- - 181
System Components
3-28
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
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