Garmin GTN 725 Pilot's Manual page 310

12.1.4
Foreword
When a weather product is active on the Map function or the Weather Data
Getting
Link function is selected, the age of the data is displayed on the screen. The age
Started
of the data may not indicate the time between the current GPS time and the time
Audio &
when the data is assembled, but rather a general indication of the time elapsed
Xpdr Ctrl
from when the data is received by the GTN.
Com/Nav
Updated weather data may or may not contain new weather data. Weather
data is refreshed at intervals that are defined and controlled by SiriusXM Satellite
FPL
Radio and its data vendors.
If for any reason, a weather product is not refreshed within the designated
Direct-To
intervals, the data is considered expired and is removed from the display.
This ensures that the displayed data is consistent with what is currently being
Proc
broadcast by SiriusXM Satellite Radio services. If more than half of the designated
Charts
time has elapsed from the time the data is received, the color of the product age
displayed changes to yellow.
Wpt Info
WARNING: Do not use the indicated data link weather product age to
determine the age of the weather information shown by the data link
Map
weather product. Due to time delays inherent in gathering and processing
weather data for data link transmission, the weather information shown by
Traffic
the data link weather product may be significantly older than the indicated
weather product age.
Terrain
The following table contains the expiration time and XM broadcast interval.
Weather
The expiration time is an elapsed time after which the data is considered
expired and is removed from the display. This ensures that the displayed data
Nearest
is consistent with what is currently being broadcast by SiriusXM Satellite Radio
services. If more than half of the expiration time has elapsed from the time the
Services/
Music
data is received, the color of the product age displayed changes to yellow.
The SiriusXM Weather broadcast interval is the time interval when
Utilities
SiriusXM Satellite Radio broadcasts new signals that may or may not contain
System
new weather data. Weather data is broadcast at intervals that are defined and
controlled by SiriusXM Satellite Radio.
Messages
NOTE: SiriusXM Weather does not provide a timestamp for AIRMETs,
SIGMETs, City Forecasts, County Warnings, Cell Movement and TFR
Symbols
products. Therefore, the unit does not display a product age indication
for these products.
Appendix
12-6
Index
SiriusXM Weather Symbols and Product Age
Garmin GTN 725/750 Pilot's Guide 190-01007-03 Rev. D