Garmin GTN 725 Pilot's Manual page 18

12 Weather .............................................................................................12-1
Foreword
12.1 SiriusXM Weather Products (Optional) ..................................................................... 12-2
12.1.1
Getting
Started
12.1.2
12.1.3
Audio &
Xpdr Ctrl
12.1.4
12.1.5
Com/Nav
12.1.5.1 Reflectivity ........................................................................ 12-10
12.1.5.2 NEXRAD Limitations .......................................................... 12-11
FPL
12.1.6
12.1.7
Direct-To
12.1.8
Proc 12.1.9
12.1.10
Charts
12.1.11
12.1.12
Wpt Info
12.1.13
12.1.14
Map
12.1.15
12.1.16
Traffic
12.1.17
12.1.18
Terrain
12.1.19
12.2 StormScope
Weather
12.2.1
12.2.2
Nearest
12.2.3
Services/
12.2.4
Music
12.2.5
Utilities 12.3 Weather Radar ................................................................................ 12-32
12.3.1
System
12.3.1.1 Principles of Pulsed Airborne Weather Radar ...................... 12-32
12.3.1.2 Antenna Beam Illumination ............................................... 12-33
Messages
12.3.1.3 Radar Signal Attenuation ................................................... 12-34
12.3.2
Symbols
12.3.2.1 Precipitation ...................................................................... 12-35
12.3.2.2 Ground Returns ................................................................. 12-36
Appendix
xvi
Index
Displaying SiriusXM Weather ............................................... 12-3
Weather Legend .................................................................. 12-4
Weather Map Orientation .................................................... 12-5
SiriusXM Weather Symbols and Product Age ........................ 12-6
NEXRAD ............................................................................. 12-9
Echo Tops .......................................................................... 12-13
Cloud Tops ........................................................................ 12-14
Cell Movement .................................................................. 12-15
SIGMETs and AIRMETs ...................................................... 12-16
County Warnings ............................................................... 12-17
Freezing Level.................................................................... 12-18
METARs ............................................................................ 12-19
Cyclone ............................................................................. 12-20
Lightning ........................................................................... 12-21
Weather Forecast .............................................................. 12-22
Winds Aloft ....................................................................... 12-24
Icing ................................................................................. 12-25
Turbulence ........................................................................ 12-26
AIREP/PIREP ...................................................................... 12-27
Weather ...................................................................... 12-28
®
StormScope (Optional) ..................................................... 12-28
®
Clearing the StormScope
Changing the StormScope
Changing the Storm Data Display Range ............................ 12-30
Displaying StormScope
Garmin GWX Radar Description ......................................... 12-32
Radar Signal Reflectivity .................................................... 12-35
Garmin GTN 725/750 Pilot's Guide
Page ......................................... 12-30
®
Display View ........................... 12-30
®
Data on the Map Page ................. 12-31
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190-01007-03 Rev. D