Cirrus Perspective
™
by Garmin – Pilot’s Guide for the SR20/SR22SR22T
190-00820-08 Rev. A
306
HAZARD AVOIDANCE
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
Figure 6-2 Weather Data Link (XM) Page
NEXRAD
Weather Product
Selected for
Display
NEXRAD Weather
Product Display
Enabled
NEXRAD Weather
Product Ages (US
& Canada)
When an XM WX product is active on a map, the age of the data is displayed on the screen to the right of the
product symbol (Figure 6-2). The age of the product is based on the time difference between when the data
was assembled on the ground and the current GPS time. Weather products are refreshed at specific intervals
(defined in the
Refresh Rate
column in Table 6-1).
If for any reason, a weather product is not refreshed within the
Expiration Time
intervals (see Table 6-1), the
data is considered expired and is removed from the display. This ensures that the displayed data is consistent
with what is currently being provided by XM WX services. If more than half of the expiration time has elapsed,
the color of the product age displayed changes to yellow. The system displays dashes instead of a product age
when a product has expired. If a weather product is not available, the system displays ‘N/A’ instead of a product
age.
Table 6-1 shows the weather product symbols, the expiration time and the refresh rate. The refresh rate
represents the interval at which XM WX services broadcasts new signals that may or may not contain new
weather data. It does not represent the rate at which weather data is updated or new content is received by
the Data Link Receiver. Weather data is updated at intervals that are defined and controlled by SiriusXM and
its data suppliers and are subject to change.
Summary of Contents for Cirrus Perspective SR20
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