Kongsberg Simrad EK80 Bedienungsanleitung

kongsberg.com/ek80

TS Calibration EK80

INSTRUCTION

MANUAL

110-0001152/A

August2023©KongsbergMaritimeAS

PUBLIC

KongsbergEK80

Widebandscienticechosounder

UsermanualforTScalibration

Release23.6.0

KongsbergMaritimeAS

www.kongsberg.com

Documentinformation

•Product:EK80

•Document:UsermanualforTScalibration

•Documentpartnumber:110-0001152

•DocumentISBNnumber:N/A

•Revision:A

•Dateofissue:28August2023

TheinformationcontainedinthisdocumentremainsthesolepropertyofKongsbergMaritimeAS.Nopartof

thisdocumentmaybecopiedorreproducedinanyformorbyanymeans,andtheinformationcontainedwithin

itisnottobecommunicatedtoathirdparty,withoutthepriorwrittenconsentofKongsbergMaritimeAS.

Warning

Theequipmenttowhichthismanualappliesmustonlybeusedforthepurposeforwhichitwasdesigned.

Improperuseormaintenancemaycausedamagetotheequipmentand/orinjurytopersonnel.Youmustbe

familiarwiththecontentsoftheappropriatemanualsbeforeattemptingtooperateorworkontheequipment.

KongsbergMaritimedisclaimsanyresponsibilityfordamageorinjurycausedbyimproperinstallation,

useormaintenanceoftheequipment.

Disclaimer

KongsbergMaritimeASendeavourstoensurethatallinformationinthisdocumentiscorrectandfairlystated,

butdoesnotacceptliabilityforanyerrorsoromissions.

Supportinformation

Ifyourequiremaintenanceorrepair,contactyourlocaldealer.Youcanalsocontactususingthefollowing

address:[email protected].Ifyouneedinformationaboutourotherproducts,visit

https://www.kongsberg.com.Onthiswebsiteyouwillalsondalistofourdealersanddistributors.

110-0001152/A3

Tableofcontents

ABOUTTHISMANUAL..................................................................5

INTRODUCTION...........................................................................7

Calibrationfortargetstrength(TS)measurements.................................................................7

Supportinformation................................................................................................................9

TSCALIBRATION.......................................................................10

PreparingTScalibration.......................................................................................................10

SelectingNormalOperationparametersforTScalibration.................................................13

Recordingrawdata...............................................................................................................14

StartingTScalibrationandcollectingechodataforsplit-beamtransducers........................15

StartingTScalibrationandcollectingechodataforsingle-beamtransducers.....................18

Choosingwhichrawdatale(s)toreplay............................................................................21

CleaningthecollectedTSdata(Split-beamtransducers).....................................................22

CleaningthecollectedTSdata(Single-beamtransducers)..................................................23

Modifying,addingandremovingafrequencyband.............................................................24

FUNCTIONSANDDIALOGBOXES...............................................25

CalibrationWizarddialogbox#1.........................................................................................25

CalibrationWizarddialogbox#2(SelectChannel).............................................................26

CalibrationWizarddialogbox#3(SelectSphere)...............................................................28

CalibrationWizarddialogbox#4(ImportData):Split-beamtransducer............................32

CalibrationWizarddialogbox#4(ImportData):Single-beamtransducer.........................40

CalibrationWizarddialogbox#5(ProcessData):Split-beamtransducer...........................48

CalibrationWizarddialogbox#5(ProcessData):Single-beamtransducer........................58

Secondaryfunctionsanddialogboxes..................................................................................68

ReplayFiledialogbox................................................................................................68

Edit/AddSpheredialogbox........................................................................................70

CalibrationDescriptiondialogbox.............................................................................72

SingleTargetDetectiondialogbox.............................................................................73

UsermanualforTScalibration

4110-0001152/A

KongsbergEK80

110-0001152/A5

Aboutthismanual

ThispublicationprovidesyouwiththebasicinformationrequiredtocalibratetheEK80

systemttedwithrelevanthardwarefortargetstrength(TS)measurements.

Relevantproducts

ThispublicationprovidesyouwiththebasicinformationrequiredtocalibratetheEK80

systemforcurrentindicatormeasurements.Thepublicationisvalidforthefollowing

products:

•KongsbergEK80

Targetaudience

CalibratingtheEK80systemforTSmeasurementsensuresthattheaccuracyisobtained.

Calibrationmustbetakenseriously.Toachievethebestresults,thecalibrationmustbe

plannedanddonecarefully.Duetothenatureofthedescriptionsandthelevelofdetail

providedbythispublication,itiswellsuitedforthosewhoare-orwishtobe-expertusers.

Agoodunderstandingofsystemfunctionsandcontrolsisessentialtofullytakeadvantage

ofthefunctionalityprovided.

Softwareversion

Thispublicationwascreatedforthefollowingsoftwareversion:23.6.0.

Onlineinformation

Allend-usermanualsprovidedforoperationandinstallationofyourEK80systemcan

bedownloadedfromourwebsite.Thisincludespublicationsthataretranslatedinto

otherlanguages.SelectedpublicationsarealsoprovidedinIETM(InteractiveElectronic

TechnicalManual)formats.Ourwebsitealsoprovidesinformationaboutotherproducts

fromKongsbergMaritime.

•https://www.kongsberg.com/ek80

Aboutthismanual

6110-0001152/A

Registeredtrademarks

Observetheregisteredtrademarksthatapply.

Simrad®,SIMRAD®andtheSimrad®logoareeitherregisteredtrademarks,ortrademarks

ofKongsbergMaritimeASinNorwayandothercountries.

Windows®isaregisteredtrademarkofMicrosoftCorporationintheUnitedStatesand

othercountries.

Wewantyourfeedback

Wealwayswanttoimproveourproducts.Wealsowantourend-userdocumentationto

becomprehensiveandrelevant.Y oucanhelp.Pleaseprovidecomments,suggestionsor

constructivecriticismtoanyofoursupportofces.

KongsbergEK80UsermanualforTScalibration

110-0001152/A7

Introduction

Topics

Calibrationfortargetstrength(TS)measurements,page7

Supportinformation,page9

Calibrationfortargetstrength(TS)

measurements

TargetStrength(TS)calibrationofanechosounderservestwopurposes.Itensuresaccurate

measurementsbycharacterizingandcompensatingforvariationsinthetransducer,the

transceiverandtheenvironment.Itisalsothebestwaytoensurecorrectoperationof

theentiresystem.Werecommendthatyouperformacalibrationbothbeforeandafter

animportantsurvey.

Whenstarting,theEK80systemdoesavalidationcheckofthecalibration.Itchecksifthe

previouscalibrationwasdoneusingthesametransceiverasincurrentuse.Ifthisisnotthe

caseamessagewillrequireanewcalibration.

Note

Calibrationmustbetakenseriously.Toachievethebestresults,thecalibrationmustbe

plannedanddonecarefully.

Duringstartup,theEK80systemwillcheckifacalibratedtransducerpresentisconnected

tothesametransceiverasinthepreviouscalibration.Ifnot,theoperatorisnotied,anda

requesttoconrmthecalibrationisissued.

InordertoperformaTScalibrationoftheEK80system,areferencetarget(calibration

sphere)withknownTSisloweredintothesoundbeam.ThemeasuredTSiscomparedwith

theknowntheoreticalTSofthesphere,andtheEK80systemisadjustedaccordingly.

Introduction

8110-0001152/A

Inthiscontext,thetransducerbeamisconicallyshapedwithacross-sectionareaincreasing

withthedepth.Asplit-beamtransducerhasthreeorfoursectors.Thecircularcross-section

issplitintoseveralslices.

TosuccessfullycalibratetheEK80systemyouneedtoplaceanumberoftargetdetectionsin

eachslice.Theechoesmustbedistributedwithintheentirebeamcross-section.Inorderto

dothis,thetargetspheremustbephysicallymovedinsidethebeamduringthecalibration

process.Thenumberofspheredetectionsshouldbeapproximatelythesameforeachslice,

andintotalnotmorethan100forthewholebeamcross-section.

AnyadjustmentstotheEK80systemlesaredoneautomatically.Nogainadjustmentsare

required.

AnewcalibrationmayalsoberequirediftheEK80softwareisupdated.Refertothe

softwarereleasenote.

TheinformationprovidedbythecalibrationisenteredintotheEK80softwareasoperational

parameters.Thisisdoneautomatically.TheEK80systemusesthenarrow-bandcalibration

forCWoperations,andthewide-bandcalibrationforLFMoperations.Innarrow-band

calibration,thefactorygainandtheSacorrectionarestoredfortheselectedpulselength.

Thebeamopeningandoffsetvaluesarestored/updatedforthelastroundofcalibration.

•ForaCWoperationwithanot-calibratedpulselength,thefactorygainandtheSa

correctionwillbeused,whereasthebeamopeningandoffsetvalueswillbeextracted

fromthelastroundofcalibration.

•ForaLFMoperation,thewide-bandcalibrationisusedforallpulselengths.

ATScalibrationcanalsobea"sanity"checkofthesystem,asitallowsyoutoverifythatall

partsofthesystemworkcorrectly.

Tip

WerecommendthatyoucalibratetheEK80incalmsea.Inareaswithcalmseaandlow

seacurrents,positioningthesphereandkeepingitwithinthedetectionareaoftheEK80

transduceriseasier.

Sacorrection

TheSacorrectionisonlycalculatedforCWtransmissions.

•WhencalibratingaWideBandTransceiver(WBT),theeffectivepulsedurationis

calculatedandusedtoestablishtheSacorrection.ThiswillnormallyresultinaSa

correctionaround0dB.

•WhencalibratingaGeneralPurposeTransceiver(GPT),theSacorrectionisbasedonthe

nominalpulseduration.ThiswillnormallyresultinaslightlynegativeSacorrection.

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