Raymarine Dragonfly-4 DV - System Settings for 5 M Variant

representanerrorofapproximately15m.Please
rememberthatevenaverylowHDOPgureis
NOguaranteethatyourreceiverisprovidingan
accurateposition.Ifindoubt,checkthedisplayed
vesselpositionintheChartapplicationagainst
youractualproximitytoaknownchartedobject.
•EstimatedHorizontalPositionError(EHPE)
—EHPEisameasureoftheestimatederrorof
apositionxinthehorizontalplane.Thevalue
displayedindicatesthatyourpositioniswithina
circleradiusofthestatedsize50%ofthetime.
•Fixstatus—indicatestheactualmodethe
receiverisreporting:
–Fix—Satellitexhasbeenacquired.
–NoFix—Nosatellitexcanbeacquired.
–DFix—Adifferentialbeaconxhasbeen
acquired.
–SDFix—Adifferentialsatellitexhasbeen
acquired.
•Position—Displaysthelatitudeandlongitude
positionofyourreceiver.
•Date/Time—Displaysthecurrentdateandtime
generatedbythepositionxinUTCformat.
•Mode—Identieswetherthereceiverisworking
indifferentialmodeornon-differentialmode.
•Datum—Thereceiver'sdatumsettingaffects
theaccuracyofthevesselpositioninformation
displayedintheChartapplication.Inorderforyour
receiverandMFDtocorrelateaccuratelywithyour
papercharts,theymustbeusingthesamedatum.
COG/SOGFilter
TheCOG/SOGlteraveragesthevelocityvectorsto
compensatefortheoscillatingmotionofthevessel,
givingaclearerindicationofthevessel’scourseand
speed.
Thelterdoesnotaffectthecalculationofyour
receiver’sreportedposition.Thevelocityvectors
calculatedfromthesignalprovideaninstantaneous
measureofspeedanddirectionofthereceiver.The
COGandSOGcanthereforseemerraticunder
certainconditions.Forexample,whenavesselis
movingslowlythroughroughseas,thereceiver
movesfromsidetosideaswellasinthedirection
oftravel.
Slowmovingvessels,orvesselssailinginrough
seaswillbenetfromahighsetting,whereasa
powerboatthatcanquicklychangespeedand
directionwillbenetfromalowsetting.
SonarSet-upmenu
TheSonarSet-upmenuprovidesthefollowing
options.
Depth
Offset:
Offsetrepresents
thedepthofthe
transducerrelativeto:
•Waterline=0.0ft
andabove.
•Keel=0.1ftand
below.
•–9.8to+9.8feet—
orequivalentunits
SonarReset
Restoreallsettings
onthesonarmodule
tofactorydefault.
Whenperforminga
SonarReset,itis
normaltobrieylose
connectionwiththe
sonarmodule.
•Yes
•No
Tools&Settings
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