Simrad SU90 Quick Start Guide

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•PulseType
ThePulseTypefunctionallowsyoutoselectthe"shape"ofthetransmittedpulses
("pings").Differentshapeshavedifferentqualities.Whichpulsetypetousedepends
onthecurrentenvironmentalconditions,yourrangetothetarget(s)andthetypeand
speedofthetarget(s)youareobserving.
•Bandwidth
TheBandwidthfunctionallowsyoutoselectthefrequencyrangeintheHyperbolic
FrequencyModulated(HFM)transmissions.
•Frequency
TheFrequencyfunctionallowsyousetthecentrefrequencyfortheHyperbolic
FrequencyModulated(HFM)andLinearFrequencyModulated(LFM)transmissions
(pings),andtheoperatingfrequencyfortheContinuousWave(CW)pings.
•HorizontalTXSector
TheSU90transmitsinaswathwithmaximumhorizontalopeninganglexxx.By
meansoftheHorizontalTxSectorfunction,youcanchangethisopeningangleto
360°.ThefunctionisonlyavailableintheHorizontal,PlaneandInspectionviews.
•VerticalTXSector
TheSU90transmitsinaswathwithmaximumverticalopeninganglexxx.Bymeans
oftheVerticalTxSectorfunction,youcanchangethisopeningangleto4.9to7°.The
functionisonlyavailableintheV erticalandNavigationviews.
•RangeProjection
Thedistancetoatargetlocatedanywhereinthewatercolumncanbemeasuredintwo
ways.Thiscaneitherbethehorizontaldistancetothetarget(True),oralongthetilt
angle(Slant).TheRangeProjectionfunctiondeneshowthisdistanceismeasured.
•AGC(AutomaticGainControl)
TheAGC(AutomaticGainControl)functionrunsanautomaticanalysisoftheecho
strength.
•RCG(ReverberationControlledGain)
TheRCG(ReverberationControlledGain)functionremovesunwantedreverberation
fromthebottomandorfromtheseasurface.Thisenhancesthevisibilityofschools.
Itmayhoweveralsoremovescatteredshfromthepresentation.
•BottomFilterThreshold
TheSU90providesabottomltertoreducethesometimespowerfulechofromthe
seabed.Thislterisusefulifyoutrytondshclosetothebottom.SelectaBottom
FilterThresholdvaluetocontrolthe"strength"ofthelter.Ahighernumerical
increasesthelterefciencyandreducesthebottomechoaccordingly.
•NoiseFilter
TheNoiseFilterremovesunwantedacousticnoisefromtheSU90presentation.It
reducestheinterferencefromotheracousticsystems(sonarsandechosounders),
aswellasthenoisefromthepropellers.
Menusystem

Simrad SU90 Specifications

General

Brand	Simrad
Model	SU90
Category	Sonar
Language	English