Raymarine i50 Depth - Page 47

Selectingaspeedresolution
FromtheUserCalibrationMenu:
1.PresstheSpeedbuttonuntiltheSpeed
Resolutionpageisdisplayed(2pressesfrom
theUserCalibrationentrypage).
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2.UsetheTimerorResetbuttonstoselectthe
requiredresolutionforspeedreadings.
Theresolutionsavailableare0.01(default)and
0.1.
Note:ToexittheUserCalibrationpagesatany
time,pressandholdtheSpeedandTripbuttons
atthesametimeforapproximately2seconds.
Selectingtheunitofmeasureforlogreadings
FromtheUserCalibrationMenu:
1.PresstheSpeedbuttonuntiltheLogUnits
pageisdisplayed(3pressesfromtheUser
Calibrationentrypage).
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2.UsetheTimerandResetbuttonstoselectthe
requiredunitofmeasurementforlogreadings.
•SM(default)—StatuteMiles
•NM—NauticalMiles
•KM—Kilometers
Note:ToexittheUserCalibrationpagesatany
time,pressandholdtheSpeedandTripbuttons
atthesametimeforapproximately2seconds.
1pointspeedcalibration
Theinstrumentdisplay’sspeedreadingscanbe
calibratedusinga1pointcalibrationprocess,inmost
situationthisisallthatwillberequiredtocalibrate
ourspeedreadings.
Prerequisites:
•ForbestresultsSOGdatashouldbeavailable,or
analternativemethodofestimatingvesselspeed
mustbeused(e.g.vesselspeedcanbeestimated
usingNauticalMeasuredMileMarkersorsimilar
landmarksofaknowndistanceapart).
•Youwillneedtobeunderway,withsufcientspace
tomaneuverunhindered.
•Inordertoachieveaccurateresults,water
conditionsmustbecalmwithzerotideandzero
current.
FromtheUserCalibrationMenu:
1.Steeryourvesselonasteadycourseata
constanttypicalspeed.
2.PresstheSpeedbuttonuntil1oftheCurrent
Speedpagesisdisplayed(4pressesfromthe
UserCalibrationentrypage).
IfSOGdataisavailableoverSeaT alk
ng
then
theSOGpageisdisplayed,ifSOGdataisnot
availablethentheCalibrationFactorpageis
displayed.
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SOG
SOG
3.IftheSOGpageisdisplayedandthewater
conditionsareacceptable,pressandholdthe
Resetbuttonforapproximately3secondsto
acceptSOGasthecurrentlogspeed.
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4.Alternatively,withtheCalibrationFactorpage
displayedusetheTimerandResetbuttonsto
adjustthecalibrationfactoruntilthedisplayed
speedmatchesyourestimatedspeed.
Thedefaultcalibrationfactoris1.00.The
calibrationfactorcanbesetfrom0.25to2.50.
5.IfSOGisavailableyoucanswitchbetweenthe
CalibrationFactorandSOGpagesbypressing
theTimerandResetbuttonsatthesametime.
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Time r
Re s e t
Note:ToexittheUserCalibrationpagesatany
time,pressandholdtheSpeedandTripbuttons
atthesametimeforapproximately2seconds.
Nauticalmeasuredmilemarkers
WhenneitherSOGdataoranyotherreliablemeans
ofestimatingSpeedThroughtheWater(STW)is
available,NauticalMeasuredMileMarkerscan
beusedtohelpcalibrateLogSpeed.Nautical
measuredmilemarkersareidentiedbytwopairsof
postsortowers.Thedistancebetweeneachpairof
markersis1nauticalmile.
Eachmarkerinapairisseparatedbydistanceand
elevationfromitspartner.Thefrontmarkeriscloser
tothewaterandshorterthanthemarkerbehindit.
i50Speed
47