Warning:Radiofrequencyradiationhazard
Theradarscannertransmitselectromagneticenergyatmicrowavefrequencies
whichcanbeharmful,particularlytotheeyes.DoNOTlookatthescannerfrom
closerange.Ensurepersonnelareclearofthescannerwhenitispoweredon.
Forsafetyreasons,theradarmustbeinstalledaboveheadheight,outofrange
ofpersonnel.
Caution:Serviceandmaintenance
Thisproductcontainsnouserserviceablecomponents.Pleasereferall
maintenanceandrepairtoauthorizedRaymarinedealers.Unauthorizedrepair
mayaffectyourwarranty.
Caution:Doppler“wagon-wheeling”effect
•Therearelimitstothemaximumrelativespeedthattheradarscannercan
measurewhenprocessingDopplertargets.Whenthetargetismovingat
highspeedstheselimitscanresultinastroboscopicvisualeffectknownas
“wagon-wheeling”or“aliasing”.
•“Wagon-wheeling”referstoanopticalillusionsimilartothatseeninsome
movies,wherewagonwheelsappeartooccasionallyrotatebackwards.When
usingDopplerradartheeffectoccurswhenthetargetismovingfastandthe
frequencyofthetransmitpulses,whenthetargetisilluminatedbytheradar,
isinsufficienttodistinguishwhetherthetargetismovingtowardsoraway
fromthevessel.
•Theresultofthisvisualeffectisthatthedirectionoftargetreturnsfromhigh
speedvesselsmaybedisplayedincorrectly.Consequently,thedisplayed
targetcolorsmaybeinverted,withtargetscoloredredwhentheyshouldbe
green,andviceversa:
–Whenthetarget'sspeedismorethan60knotsSpeedOverGround(SOG),
ortherelativespeedbetweenyourvesselandthetargetisgreaterthan120
knots,thetargetcolorsmaybeinvertedasfollows:
♦Approachingobjectsarehighlightedingreen.
♦Recedingobjectsarehighlightedinred.
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