Cirrus Perspective
™
by Garmin – Pilot’s Guide for the SR20/SR22/SR22T
190-00820-08 Rev. A
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
618
APPENDIX B
Figure B-12 Check Database Cycle Number
MAGNETIC FIELD VARIATION DATABASE UPDATE
A copy of the current magnetic field variation database (MV DB) is included with the navigation database.
At startup, the system compares this version of the MV DB with that presently being used by each AHRS
(GRS1 and optional GRS2). If the system determines the MV DB needs to be updated, a prompt is displayed
on the Navigation Map Page, similar to Figure B-12. Note, in the following example, GRS1 is the first AHRS
to indicate an update is available. In actuality, this is dependent on which AHRS is the first to report status
to the system. GRS2 may be displayed before GRS1. The order is not important, only that each AHRS be
updated, if more than one is installed.
Figure B-12 GRS1 Magnetic Field Variation Database Update Prompt
Loading the magnetic field variation database update (single or dual AHRS):
1)
With ‘OK’ highlighted, as seen in Figure B-12, press the
ENT
Key on the MFD. A progress monitor is displayed
as shown in Figure B-13.
Summary of Contents for Cirrus Perspective SR20
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