Raymarine e7 - Page 165

Adjustingguardzoneusingtouch
YoucanopentheGuardzonemenufromtheguardzonecontext
menu.
1.Selecttheguardzone.
Theguardzonecontextmenuisdisplayed.
2.SelectAdjustZone.
TheAdjustguardzonemenuisdisplayed.
3.SelectZoneshapetoswitchbetweenSectororCircle.
4.SelectAdjustOuter.
i.Selectthelocationonscreenyouwishtheouterguardzone
tobeplaced.
5.SelectAdjustInner.
i.Selectthelocationonscreenyouwishtheinnerguardzone
tobeplaced.
6.SelectAdjustWidth.
i.Selectthelocationonscreenyouwishtheguardzonewidth
tobesetto.
7.SelectAdjustBearing.
i.Selectthelocationonscreenyouwishtheguardzone
bearingtobesetto.
Note:Guardzonewidthandbearingcanonlybeadjustedwhen
theZoneShapeissettoSector.
Adjustingguardzonesensitivity
Youcanadjustthethresholdatwhichthealarmistriggeredbya
targetenteringtheguardzone.
1.SelectMenu.
2.SelectTrackTargets.
3.SelectGuardZoneSet-up.
4.SelectSensitivity.
5.UsingtheRotaryControladjustthethresholdtotherequired
percentage.
6.PressOktosavethechanges.
Theguardzonesensitivitysettingcanalsobeaccessedfromthe
Alarmsmenu:homescreen>Set-up>Alarms>GuardZone
>Sensitivity.
MARPAoverview
MARPAisusedfortargettrackingandriskanalysisintheradar
application.
Withanaccurateheadingsensorconnectedtoyourmultifunction
display,youcanusetheMiniAutomaticRadarPlottingAid(MARPA)
functionsfortargettrackingandriskanalysis.MARPAimproves
collisionavoidancebycalculatinginformationfortrackedtargets,
andprovidescontinuous,accurate,andrapidsituationevaluation.
Thenumberoftargetsthatyoucantrackatanyonetimeis
dependentonthemodelofradarscannerthatyouareusing.
MARPAtracksacquiredtargets,andcalculatesthetarget’sspeed
andcourse.
Eachtargettrackedcanbedisplayedwithagraphicindicatingthe
ClosestPointofApproach(CPA),andTimetoClosestPointof
Approach(TCPA).Thecalculatedtargetdatacanalsobeshownon
yourscreen.Eachtargetiscontinuallyassessedandanaudible
alarmissoundedifatargetbecomesdangerous,orislost.
ForeffectiveMARPAoperation,yourmultifunctiondisplaymust
haveaccurateheadingandspeeddataforyourvessel.Thebetter
thequalityoftheheadingandspeeddata,thebetterMARPAwill
perform.Forthebestheadingdata,aRaymarineSMARTheading
sensororagyro-stabilizedautopilotisrequired.
InTrueMotionmode,SpeedOverGround(SOG)andCourseOver
Ground(COG)informationisrequiredtoshowtruetargetcourse
andspeed.
InRelativeMotionmode,headingandspeedinformationisrequired.
Usingradar
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