Garmin G600 manual International Geomagnetic Reference Field

1.3International Geomagnetic Reference Field

The IGRF (International Geomagnetic Reference Field) model is contained in the GRS 77 and is only updated once every five years. The IGRF model is part of the Navigation Database. At system power-up, the IGRF models in the GRS 77 and in the Navigation Database are compared, and if the IGRF model in the GRS 77 is out of date, the user is prompted to update the IGRF model in the GRS 77. The following prompt will appear after the G600 splash screen is acknowledged on the MFD.

GRS MV DB UPDATE AVAILABLE.UPDATE FROM yyyy TO yyyy (e.g. 2005 to 2010)

Pressing the ENT key (or right-most soft key) acknowledges this information and displays the Navigation Map Page. When the interfaced GPS unit has acquired a sufficient number of satellites to determine a position, the aircraft’s current position is shown on the Navigation Map Page.

Foreword
Sec 1 System
PFD	Sec 2
Sec 3 MFD
Avoidance	Hazard	Sec 4
Features	Additional	Sec 5
& Alerts	Annun.	Sec 6
Symbols	Sec 7
Glossary	Sec 8
Appendix A
Index	Appendix
	B

190-00601-02 Rev. E Garmin G600 Pilot’s Guide 1-13