Garmin Software Version 0563.32 User's Guide Page 89

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Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-13 Rev. B 71
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
Displaying Precipitation Weather Information
1)
Select the MAP Softkey (for the PFD Inset Map, select the INSET Softkey).
This step is not necessary on the Connext Weather Data Link Page.
2)
Select the PRECIP Softkey.
Radar data shown represents lowest level, base reflectivity, of radar returns. The display
of the information is color-coded to indicate the weather severity level. All weather product
legends can be viewed on the Connext Weather Data Link Page. For the Precipitation
legend, select the LEGEND Softkey when Precipitation is selected for display.
Precipitation Limitations
Radar images may have certain limitations:
Radar base reflectivity does not provide sufficient 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 reflectivity 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 Weather Data Link (CNXT) 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.
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