190-00820-08 Rev. A
Cirrus Perspective
™
by Garmin – Pilot’s Guide for the SR20/SR22/SR22T
54
SYSTEM OVERVIEW
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
1.7 DISPLAY BACKLIGHTING
The dimming bus is the primary source for backlighting adjustments of the PFD and MFD displays, bezel, Audio
Panel keys, AFCS Control Unit keys, and PFD/MFD Control Unit keys. The automatic backlighting adjustment
for the AFCS Control Unit annunciators and PFD/MFD Control Unit annunciators uses photocell technology to
automatically adjust for ambient lighting conditions. Photocell calibration curves are pre-configured to optimize
display appearance through a broad range of cockpit lighting conditions. Manual backlighting adjustment can
be accomplished using the existing instrument panel dimming bus or the following procedures. In normal
operating mode, backlighting can only be adjusted from the PFD. In Reversionary Mode, it can be adjusted from
the remaining display.
Adjusting display backlighting:
1)
Press the PFD
MENU
Key to display the PFD Setup Menu. ‘AUTO’ is now highlighted next to ‘PFD DSPL’.
2)
Turn the small
FMS
Knob to select ‘MANUAL’.
3)
Press the
ENT
Key. The intensity value is now highlighted.
4)
Use the
FMS
Knob to enter the desired backlighting then press the
ENT
Key.
5)
Turn the large
FMS
Knob to highlight ‘AUTO’ next to ‘MFD DSPL’ and repeat steps 2-4.
6)
To remove the menu, press the
CLR
or
MENU
Key.
Adjusting key backlighting:
1)
Press the PFD
MENU
Key to display the PFD Setup Menu. ‘AUTO’ is now highlighted next to ‘PFD DSPL’.
2)
Turn the large
FMS
Knob to highlight ‘PFD DSPL’.
3)
Turn the small
FMS
Knob in the direction of the green arrowhead to display ‘PFD KEY’.
4)
Turn the large
FMS
Knob to highlight ‘AUTO’.
5)
Turn the small
FMS
Knob to select ‘MANUAL’.
6)
Press the
ENT
Key. The intensity value is now highlighted.
7)
Use the
FMS
Knob to enter the desired backlighting and press the
ENT
Key.
8)
Turn the large
FMS
Knob to highlight ‘MFD DSPL’.
9)
Turn the small
FMS
Knob in the direction of the green arrowhead to display ‘MFD KEY’ and repeat steps 4-7.
10)
To remove the menu, press the
CLR
or
MENU
Key.
Figure 1-44 PFD Setup Menu
PFD
Summary of Contents for Cirrus Perspective SR20
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