Raymarine gS Series - Radar Check

•HorizontalDilutionofPrecision(HDOP)
—HDOPisameasureofsatellitenavigation
accuracy,calculatedfromanumberoffactors
includingsatellitegeometry,systemerrorsin
thedatatransmissionandsystemerrorsinthe
receiver.Ahigherguresigniesagreater
positionalerror.Atypicalreceiverhasanaccuracy
ofbetween5and15m.Asanexample,assuming
areceivererrorof5m,anHDOPof2would
representanerrorofapproximately15m.Please
rememberthatevenaverylowHDOPgureis
NOguaranteethatyourreceiverisprovidingan
accurateposition.Ifindoubt,checkthedisplayed
vesselpositionintheChartapplicationagainst
youractualproximitytoaknownchartedobject.
•EstimatedHorizontalPositionError(EHPE)
—EHPEisameasureoftheestimatederrorof
apositionxinthehorizontalplane.Thevalue
displayedindicatesthatyourpositioniswithina
circleradiusofthestatedsize50%ofthetime.
•Fixstatus—indicatestheactualmodethe
receiverisreporting:
–Fix—Satellitexhasbeenacquired.
–NoFix—Nosatellitexcanbeacquired.
–DFix—Adifferentialbeaconxhasbeen
acquired.
–SDFix—Adifferentialsatellitexhasbeen
acquired.
•Position—Displaysthelatitudeandlongitude
positionofyourreceiver.
•Date/Time—Displaysthecurrentdateandtime
generatedbythepositionxinUTCformat.
•Mode—Identieswetherthereceiverisworking
indifferentialmodeornon-differentialmode.
•Datum—Thereceiver'sdatumsettingaffects
theaccuracyofthevesselpositioninformation
displayedintheChartapplication.Inorderforyour
receiverandMFDtocorrelateaccuratelywithyour
papercharts,theymustbeusingthesamedatum.
7.3Radarcheck
Warning:Radarscannersafety
Beforerotatingtheradarscanner,ensure
allpersonnelareclear.
Warning:Radartransmission
safety
Theradarscannertransmits
electromagneticenergy.Ensureall
personnelareclearofthescannerwhen
theradaristransmitting.
Checkingtheradar
FromtheRadarapplication:
1.SelectMenu.
2.SelectPowersothatOnishighlighted.
TheRadarscannerwillnowinitializeinstandby
mode.Thisprocesswilltakeapproximately70
seconds.
3.SelectRadarsothatTransmitishighlighted.
Theradarscannershouldnowbetransmitting
andreceiving.
4.Checkthattheradarscreenisoperatingcorrectly.
TypicalHDradarscreen
Note:Theexampleaboveisrepresentativeofthe
enhancedoutputprovidedbyaHDradarscanner.
Pointstocheck:
•Radarsweepwithechoresponsesareshown
onscreen.
•Radarstatusiconrotatingintoprighthand
cornerofthestatusbar.
Checkandadjustbearingalignment
Bearingalignment
Theradarbearingalignmentensuresthatradar
objectsappearatthecorrectbearingrelativetoyour
boat’sbow.Youshouldcheckthebearingalignment
foranynewinstallation.
Systemchecks
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