Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
190-02177-02 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
494
APPENDIX B
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 GRS2). If the system determines the MV DB needs to be updated, a prompt is displayed on the
MFD, as shown in Figure B-13. 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 both AHRS be updated.
Figure B-13 GRS1 Magnetic Field Variation Database Update Prompt
Loading the magnetic field variation database update:
1)
With ‘OK’ highlighted, as seen in Figure B-13, press the
ENT
Key on the MFD. A progress monitor is displayed
as shown in Figure B-14.
Figure B-14 Uploading Database to GRS1
2)
When the upload is complete, the system is ready for use.