Raymarine i70 - Rudder and Compass Calibration

•ResettheCalibrationT abletofactorydefaults
ViewingthecalibrationTable
CalibrationpointsarestoredintheCalibrationT able.
Fromafavoritepage:
1.SelectMenu.
2.SelectSet-up.
3.SelectTransducersSet-up.
4.SelectContinue.
Theinstrumentdisplaywillsearchforanddisplay
alistofconnecteddevices.(i.e.iTC-5,DSTor
transducerpod)
5.Selectthedevicethatthetransducer(s)youare
calibratingareconnectedto.
Alistofavailabletransducerdataisdisplayed,
6.*SelectSpeed.
Important:*SteponlyapplicabletoiTC-5.
7.SelectSpeedCalibration.
8.SelectAdvanced.
9.SelectViewcaltable.
TheCalibrationT ableisdisplayed.
1.SpeedtransducerconnectedviaiTC-5or
speedpod.
2.SmartDSTtransducerconnecteddirectlyto
SeaTalk
ng
.
10.UsetheUpandDownbuttonstoscrollupand
downthroughthetable.
11.SelectBacktoreturntotheAdvancedMenu.
Checkingspeed
Thecurrentspeedcanbecheckedatanytimefrom
theAdvancedMenu.
FromtheAdvancedMenu:
1.SelectCheckspeed.
TheCheckSpeedpageisdisplayed:
TheCheckSpeedpagecanalsobeaccessedfrom
theEditcalibrationoptionsmenu:Advanced>
Adjustcaltable>Start>Options>Checkspeed.
ManuallyworkingoutaCalibrationFactor
NewCalibrationFactorscanbeworkedoutmanually
followingthestepsbelow.
•Youwillneedtobeunderway,withsufcientspace
tomaneuverunhindered.
•Toensureaccuracy,waterconditionsshouldbe
calmwithzerotideandzerocurrent.
•Youwillneedtocalibrateeachcalibrationspeed
point,startingwiththelowest
1.Incalmconditionswithzerotideandzerocurrent,
runyourvesselatasteadyspeed,approximately
thatoftheselectedcalibrationspeed,overa
measureddistance.
Makeanoteof:
•Themeasureddistanceinnauticalmiles
•Thecurrentspeedvalueinknots
•Thetimeinminutesittakestocoverthe
measureddistance
2.Calculatetheactualspeedoverthemeasured
distanceusingthecalculation:(Speed=(60x
Distance)/Time)The‘60’isusedtoensurethe
calculationisinminutesratherthanhoursor
tenthsofanhour.
e.g.Distance=14nauticalmiles,Time=105
minutes(1hour45minutes)so:
•S=(60xD)/T
•S=(60x14)/105
•S=840/105
•S=8Kts
3.Ifthecalculatedspeedis:
•Thesameasthecurrentspeed,(notedduring
theSpeedRunCalibration)thenthecalibration
iscorrectatthisspeedsonoactionisrequired.
•Notthesameasthecurrentspeed.Calculate
anew,correctedCalibrationFactor,asfollows:
e.g.ifactualspeedequals8kts,indicated
speedwas7.5ktsandtheoldCalibration
Factorwas1.4then:
–newcalfactor=actualspeedxoldfactor/
indicatedspeed
–newcalfactor=8x1.4/7.5
–newcalfactor=11.2/7.5
–newcalfactor=1.49
AddingaCalibrationPoint
CalibrationPointscanbemanuallyaddedtothe
CalibrationTable.TheamountofCalibrationPoints
thatcanbestoredisdeterminedbythetypeofspeed
transducerandmethodofconnection.
FromtheTransducerfoundmenu:Menu>Set-up>
Transducerset-up>Continue:
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