Raymarine a68 WiFi User Manual

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.
GlobalNavigationSatelliteSystems(GNSS)
AGNSSisasystemofsatellitesthatprovides
autonomousgeo-spatialpositioningthatallows
electronicdeviceswithcompatiblereceiversto
determinetheirlocation(longitude,latitudeand
altitude).
OperationalGNSS
•GPS(NAVSTAR)GlobalPositioningSystem
USownedconstellationofsatellitesthatbecame
fullyoperationalin1995.
•GLONASSacronymfor"GLObalnaya
NAavigatsionnayaSputnikovayaSistema"or
“GlobalNavigationSatelliteSystems”
Russianownedconstellationofsatellitesthat
offeredglobalcoveragein2010.
PlannedGNSS
•Galileo
Europeansatelliteconstellationininitial
deploymentphaseduetobecomeoperationalin
2020.
•COMPASS/Beidou-2
ChineseRegionalNavigationSatelliteSystem
(Beidou)iscurrentlybeingexpandedforglobal
coverage(COMPASSorBeidou-2)by2020.
Satellitebasedaugmentationsystems
(SBAS)
Satellitebasedaugmentationsystems(SBAS)are
systemsthatareusedtocomplimentexistingGNSS
byprovidingdifferentialcorrectionsthatimprovea
GNSS’sattributessuchasaccuracy,availabilityand
reliability.
TheimagebelowshowsSBASregionalcoverage.
WAAS
EGNOS
GAGAN
MSAS
D13121-1
•WAAS—WideAreaAugmentationSystem
(OperatedbytheFederalAviationAuthority(FAA)
intheUSA.)
•EGNOS—EuropeanGeostationaryNavigation
OverlayService(OperatedbytheEuropean
SpaceAgency.)
•GAGAN—GPSAidedGeoAugmented
Navigation(OperatedbyIndia.)
•MSAS—Multi-functionalSatelliteAugmentation
System(OperatedbyJapan’sMinistryofLand,
InfrastructureandTransportandJapanCivil
AviationBureau(JCAB)
•QZSS—Quasi-ZenithSatelliteSystem(Proposed
byJapan)
RaymarineGPS/GNSSreceivercompatibility
RaymarineGPSreceiversandGNSS
(GPS/GLONASS)receiversarecompatible
withthefollowingGNSSandSBAS.
Status/
TypeNameCompatiblereceivers
Oper-
ational
GNSS
GPS
AllinternalandexternalRaymarine
GPSreceiversandGNSSreceivers
Oper-
ational
GNSS
GLON-
ASS
a9xanda12xinternalGNSS
receiver
Planned
GNSS
COM-
PASS/
Beidou–2
*a9xanda12xinternalGNSS
receiver
Planned
GNSS
Galileo*a9xanda12xinternalGNSS
receiver
Oper-
ational
SBAS
WAAS
AllinternalandexternalRaymarine
GPSreceiversandGNSSreceivers
Gettingstarted
105

Raymarine a68 WiFi Specifications

General

Brand	Raymarine
Model	a68 WiFi
Category	Marine Equipment
Language	English