
Garmin G1000 Pilot’s Guide for Cessna Nav III
190-00498-07 Rev. A
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICESINDEX
280
HAZARD AVOIDANCE
Figure 6-2 Weather Data Link (XM) Page
NEXRAD Weather
Product Selected
for Display
NEXRAD Weather
Product Symbol
NEXRAD Weather
Product Ages (US
& Canada)
WhenanXMWXproductisactiveonaMFDmap,theageofthedataisdisplayedonthescreentotherightof
theproductsymbol(Figure6-2).Theageoftheproductisbasedonthetimedifferencebetweenwhenthedata
wasassembledonthegroundand thecurrentGPStime.Weatherproductsarerefreshed atspecicintervals
(denedintheRefresh RatecolumninTable6-1).
Ifforanyreason,aweather productisnotrefreshedwithinthe Expiration Timeintervals(seeTable6-1),
thedataisconsideredexpiredandis removedfromthedisplay.Thisensuresthedisplayeddatais consistent
withthedataXMWXservicesis currentlytransmitting.Ifmorethanhalfof theexpirationtimehaselapsed,
thecoloroftheproductagedisplayedchangestoyellow.Ifnodataisavailableforaweatherproduct,‘N/A’is
displayednexttotheweatherproductsymbol.Ifaweatherproductageisinvalid,thesystemdisplaysdashes
nexttotheproductsymbolinsteadofaproductage.
Table6-1showstheweather productsymbols,theexpirationtimes andtherefreshrates. Therefreshrate
representstheintervalatwhichXMWXservicesprovidesnewsignalsthatmayormaynotcontainnewweather
data.Itdoesnot representtherateatwhich weatherdataisupdated ornewcontentisreceived bytheData
LinkReceiver.Weatherdataisupdated atintervalsthatare denedandcontrolledbySiriusXM anditsdata
providers, and are subject to change.