Simrad ST90 Installation Manual

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verylongrangesinallweatherandseaconditions.Whetheritisheavyweather,hard
bottom,openwaters,weaktargets-allechoesarehandledbytheST90duetothefully
stabilizedandverynarrowbeamscombinedwiththecuttingedgesignalprocessing.
Thecentreoperationalfrequencyis19kHz,butyoucanselectanyoperationalfrequency
from14to24kHzinstepsof1kHz.Thecylindricalmulti-elementtransducerallows
theomnidirectionalsonarbeamstobetiltedelectronicallyfrom-10to+84degrees.
Thisallowsyoutoautomaticallytrackschoolsofsh,andtoobservethewholewater
volumearoundthevessel.
TheST90providesanumberofstandardinterfacelinesforcommunicationwith
peripheraldevicesandsensors.Typicalinputsaregeographicalinformationfroma
positioningsystem,vesselspeedandcurrentheading.Bydefault,theST90usesa
built-inmotionsensor.Forimprovedoperationalaccuracy,anexternalmotionreference
unit(MRU)canbeconnected.
Thenarrowbeamopeningangle(6.5°@17kHz)andthehighsourcelevelmakesthe
ST90averypowerfulandhighresolutionlowfrequencysonar.Thenarrowbeams
providedbytheST90giveyouseveraladvantages.
•Theyincreasetherangeandresolution,andofferaverticalviewwithadditional
detailsandaclearerpicture.
•TheymaketheST90evenmoreidealwhenyouneedtosearchforshclosetothesea
bottom,orclosetothesurface,atlongranges.
•Theyprovideafarbetterverticalviewwithless"bottomclimbing"thatwhatisseen
onsonarswithawiderbeam.
•Thenarrowbeamsalsodecreasethenoiselevel.
TheST90offersthesameuserinterfaceandoperatingsoftwareasourothersonars,
echosoundersandcatchmonitoringsystems.Thisenableseasierandfastertraining
ofnewusers.
TheST90echopresentationsareoptimizedformultipledisplays.Providedthatyouhave
connectedadditionaldisplaystoyourProcessorUnit,youcanusetheDockingViews
functiontotakeanysonarviewandplaceitonaseparatedisplay.Whenyoumovea
viewtoanotherdisplay,itwillautomaticallybescaledforthebestpossibleresult.
Itiscommonforsonarstorequiremanypingstobuildthevariousviewsintheecho
presentation.Thesesonarsmayforexampleneedonepingtobuildthe360degreesomni
view,andthenseveraladditionalpingstofetchtheechoesfortheverticalviews.On
theST90,allthesonarviewsinthepresentationarebuiltusingtheechoesfromone
singleping.Thisdramaticallyimprovestheupdaterateandprovidesbetterreal-time
information.
TheST90permitsyoutorecordreal-timesonarsituations.Thisallowsyoutoreplay
completesequences.Theplaybackcontainstheexactsameechoinformation,andcanbe
usedformissionhistory,trainingortroubleshootingpurposes.
Greatemphasishasbeenplacedonanintuitiveuserinterfaceandthebestpossiblesonar
presentationsonahighresolutioncolourdisplay.
SimradST90InstallationManual

Simrad ST90 Specifications

General

Brand	Simrad
Model	ST90
Category	Sonar
Language	English