Raymarine i50 Depth - Page 48

Markers—sideview
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1
2
1.Frontmarker
2.Rearmarker
Whenthe2markersappearverticallyaligned
thevesselisonthecorrectrangelinetobegina
measuredmilerun.
Markeralignment
D13148-1
1 2 3
1.Leftofrangeline
2.Onrangeline
3.Rightofrangeline
Thevesselshouldalreadybeattopspeedandas
therstpairofmarkersappearalignedastopwatch
shouldbestarted,whenthevesselpassesthe
secondpairofalignedmarkersthestopwatchis
stopped.
Measuringanauticalmile
5
4
D13149-1
3
1
2
1.Startingpoint(startstopwatch)
2.Measuredmile
3.Endpoint(stopstopwatch)
4.Firstpairofmarkers
5.Secondpairofmarkers
Toprovideamoreaccuratereadingthevessel
shouldmakebetween4to6runsinbothdirections
toallowfortideandwindconditions.Theaverage
ofthetimetakenoverallrunsshouldbeusedto
calculateLogSpeed.
Thevesselspeedcanthenbeworkedoutbytaking
thedistancetravelled(1nauticalmile)anddividingit
bytheaveragetimetakentoperformtherun.The
resultingcalculationisyouraveragespeedinknots.
Selectingunitofmeasureforwater
temperaturereadings
FromtheUserCalibrationMenu:
1.PresstheSpeedbuttonuntiltheWater
TemperatureUnitspageisdisplayed(5presses
fromtheUserCalibrationentrypage).
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Spe ed
2.UsetheTimerorResetbuttonstoselect
therequiredunitofmeasurementforwater
temperaturereadings.
Theunitsofmeasureavailablefortemperature
are:
•°C(default)—degreesCelsius
•°F—degreesFahrenheit
Note:ToexittheUserCalibrationpagesatany
time,pressandholdtheSpeedandTripbuttons
atthesametimeforapproximately2seconds.
Calibratingwatertemperature
Youwillneedansuitablethermometertomeasure
thewatertemperature.
FromtheUserCalibrationMenu:
1.PresstheSpeedbuttonuntiltheWater
TemperatureCalibrationpageisdisplayed(6
pressesformtheUserCalibrationentrypage).
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Spe ed
2.Useasuitablethermometertomeasurethewater
temperature.
3.UsetheTimerandResetbuttonstomatch
thedisplayedwatertemperaturetothewater
temperaturemeasuredbythethermometer.
Note:ToexittheUserCalibrationpagesatany
time,pressandholdtheSpeedandTripbuttons
atthesametimeforapproximately2seconds.
Enablinganddisablingtimerbuzzers
FromtheUserCalibrationMenu:
1.PresstheSpeedbuttonuntiltheTimerBuzzer
pageisdisplayed(76pressesformtheUser
Calibrationentrypage).
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Spe ed
2.UsetheTimerorResetbuttonstoswitchthe
timerbuzzersOnandOff(default).
48i50