FLIR Raymarine p70s - Adjusting Hard-Over Time (Evolution); Compass Linearization (Evolution)

7.8Adjustingthehard-overtime—
Evolution
Onvesselswithoutarudderreferencetransducer,it
isimportanttosetaHardOverTime.
Beforeattemptingtofollowthisprocedureensure
youhavereadandunderstoodtheRudderCheck
warningprovidedinthisdocument.
Toestimateyourhardovertimefollowthesteps
below:
1.WiththeautopilotinStandby,manuallyturnthe
rudder/enginefulltoport.(Forvesselswith
powersteeringtheengineshouldberunning
whenturningtherudder.)
2.EngageAutomode.
3.Pressthe+10and+1buttonsatthesametime
(p70/p70s)orusetheRotary(p70R/p70Rs)to
alteryourlockedheadingby90degrees.Usea
stopwatchtotimethemovementoftherudder/
engine.
4.Estimatehowlongitwouldtaketomovethe
rudderfromfullporttofullstarboard.This
estimateisyourHardOverTime.
5.EnterthisestimateasyourHardOverTime.The
HardOvertimesettingcanbeaccessedfromthe
DriveSettingsmenu:Menu>Set-up>Autopilot
Calibration>DriveSettings>HardOverTime.
6.AftersettingyourHardOverTime,observeyour
autopilot’sbehaviorandifrequired,makesmall
adjustmentstotheHardOverTimevalueuntila
satisfactoryresultisachieved.
Warning:Ruddercheck
Ifnorudderreferencehasbeenttedyou
MUSTensurethatadequateprovisionis
madetopreventthesteeringmechanism
fromimpactingtheendstops.
7.9Compasslinearization—Evolution
autopilots
TheEVunit’sinternalcompassneedstocompensate
forlocalandtheEarth’smagneticelds.Thisis
achievedusinganautomaticprocessknownas
linearization.
Initiallinearization
WhentheEVunitisrstinstalledandpowered-up(or
afterafactoryresetorcompassrestart)linearization
isrequired.Aprogressbarisdisplayedtoindicate
linearizationisrequired.
Thelinearizationprocesswillstartautomatically
afteryourvesselhasturnedapproximately100°
ataspeedofbetween3–15knots.Linearization
requiresnouserinput,howeveratleasta270°
turnisrequiredbeforelinearizationcancomplete.
Theprogressbarwilllltoindicateprogress,the
progressbarwillturnRediftheprocessispausedor
otherwiseinterrupted.Timeittakestocompletethe
linearizationwillvaryaccordingtothecharacteristics
ofthevessel,theinstallationenvironmentofthe
EVunit,andthelevelsofmagneticinterference
atthetimeofconductingtheprocess.Sourcesof
signicantmagneticinterferencemayincreasethe
timerequiredtocompletethelinearizationprocess.
Examplesofsuchsourcesinclude:
•Marinepontoons
•Metal-hulledvessels
•Underwatercables
Youcanspeed-upthelinearizationprocessby
completingafull360°turn(ataspeedof3–15
knots).Youcanalsorestartthelinearizationprocess
atanytimebyselectingtheRestartCompassmenu
item.
Oncetheinitiallinearizationiscompletedthe
Deviationpageisdisplayedandthecurrent
maximumcompassdeviationisshown.
Commissioning-Evolutionautopilotsystem
47