Garmin Software Version 0321.23 Betriebsanweisung Seite 73

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Seitenansicht 72
Garmin G1000 Cockpit Reference Guide for the DA40/40F
190-00324-11 Rev. C 57
Hazard Avoidance
Flight
Instruments EIS
Nav/Com/
XPDR/Audio AFCS GPS Nav
Flight
Planning Procedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
Alerts Appendix Index
Precipitation Limitations
Radar images may have certain limitations:
• Radarbasereectivitydoesnotprovidesufcientinformationtodeterminecloud
layers or precipitation characteristics (wet hail vs. rain). For example, it is not
possible to distinguish between wet snow, wet hail, and rain.
• Radarbasereectivityissampledattheminimumantennaelevationangle.An
individual radar site cannot depict high altitude storms at close ranges. It has
no information about storms directly over the site.
• Whenzoomedintoarangeof30nm,eachsquareblockonthedisplayrepresents
an area of four square kilometers.
The following may cause abnormalities in displayed radar images:
• Groundclutter
• Strobesandspuriousradardata
• Sunstrobes(whentheradarantennapointsdirectlyatthesun)
• Interferencefrombuildingsormountains,whichmaycauseshadows
• Metallicdustfrommilitaryaircraft,whichcancausealterationsinradarscans
Infrared Satellite
Infrared Satellite (IR SAT) data depicts cloud top temperatures from satellite
imagery. Brighter cloud top colors indicate cooler temperatures occurring at higher
altitudes.
Displaying Cloud Tops information
1)
Select the GFDS Weather Data Link Page.
2)
Select the IR SAT Softkey.
To display the Infrared Satellite legend, select the LEGEND Softkey when Infrared
Satellite data is selected for display.
Data Link Lightning
Lightning data shows the approximate location of cloud-to-ground lightning strikes.
A strike icon represents a strike that has occurred within a two-kilometer region.
Neither cloud-to-cloud nor the exact location of the lightning strike is displayed.
If the aircraft is also equipped with the L-3 WX-500 Stormscope
®
, only one
lightning product may be enabled for display at a time.
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