Garmin CIRRUS PERSPECTIVE SR22T Reference Manual page 86

Hazard Avoidance
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 an on-board lightning detection system (e.g.,
L-3 WX-500 Stormscope
a time.
Displaying Data Link Lightning information
1) Select the MAP Softkey (for the PFD Inset Map, select the INSET Softkey).
This step is not necessary on the GFDS Weather Data Link Page.
2) Select the DL LTNG Softkey.
To display the Data Link Lightning legend on the Weather Data Link Page, select
the LEGEND Softkey when Data Link Lightning is selected for display.
SIGMETs and AIRMETs
The entire SIGMET or AIRMET is displayed as long as any portion of it is occurring
within the coverage area of the GFDS data request.
68
Cirrus Perspective
), only one lightning product may be enabled for display at
®
™ by Garmin – Cockpit Reference Guide for the SR20/SR22/SR22T
190-00821-09 Rev. A