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401925/C
Requirements
Results
Rawdatacanberecordedandplayedback.
Dateandsignature:
Measuringnoiseinpassiveoperatingmode
Lownoiseisakeyfactorforhighqualityandreliablemeasurements.Theperformance
oftheEK80willalwaysbelimitedbydifferentnoisesources.Thenoiseismeasured
whiletheEK80operatesinPassivemodewiththetransmitpulsesdisabled.
Prerequisites
TheEK80isinstalledasspeciedintheEK80Installationmanual.
•TheEK80systemisturnedonandoperatesnormally.
Caution
YoumustneversettheEK80to"ping"unlessthetransducerissubmergedinwater.
Thetransducermaybedamagedifittransmitsinopenair.
•Alltherelevanttransceivershavebeensetup,andtheyareoperationalwiththeir
respectivetransducers.
•Allrelevantchannels(transceiver/transducercombinations)areinstalledintheuser
interface.
•AllrelevantexternalsensorsareconnectedtotheEK80.Thesensorsareturned
onandoperatenormally.
•Thevesselisberthed.
Note
Thistestmustbeconsideredasindicative.Withthevesselinport,theenvironmental
conditionsarenotsatisfactory.Intheshallowwatersoftheport,noisefromothervessels,
dockyardworkersormachinerywillcauseunreliabletestresults.Ifyoudothistestsina
busyharbour,orwithnoisesourcespresent,thesensitivereceiverswilldetectallthe
noiseinthenearbywaters.ThetestisthereforerepeatedduringtheSeaAcceptanceTest.
Neithertoolsnorinstrumentsarerequired.
Context
Itisessentialthatthenoisesignatureisaslowaspossible.Y ourEK80mustbesetto
Passivemode.
SimradEK80HarbourAcceptanceTest