Simrad ES80 - Verifying that the Bottom Is Correctly Detected

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Result
TheES80isnowtransmittingacousticpulses("pinging")intothewater.
Furtherrequirements
WhentheES80starts,itisveryimportantthatitdetectsthebottomcorrectly.Inmost
casesthiswilltakeplaceautomatically.However,wehaveexperiencedthatlarge
schoolsofshordifcultbottomconditionshavedeceivedtheES80todisplaythe
wrongdepth.Inthesecasesthesoundermaydisplaythebottomat0,0metersatthetop
oftheshschool.InordertoaidtheES80tolocatethecorrectdepth,youmustadjustto
bottommaximumandminimumrangesaccordingtotheactualbottomdepth.
Verifyingthatthebottomiscorrectlydetected
LocatingthebottomisimportantfortheES80.TheES80needsthis"bottomlock"to
locatethecorrectdepth,andtostayonitduringtheoperation,evenifthedepthchanges
continuously.Occasionally,difcultenvironmental,waterorbottomconditionsmay
inhibit"bottomlock".
Context
TheBottomDetectionparametersprovideseparatelimitsforminimumandmaximum
depth.Theselimitsmaybeusedtoobtain"bottomlock"onthedepthwhentheES80is
transmitting.TheBottomBackstepparameterallowsyoutomanuallymodifywhereon
thebottomechothedepthshallbedetected.
Tip
Ifyouhaveproblemswithbottomdetection,youmayconsiderdisablingit.Thiscanbe
usefulifyouonlywishtostudytargetsinthewatercolumn.
Procedure
1OpentheActivemenu.
2SelectBottomDetection.
Tip
ThebottomdetectionparametersarealsofoundasapageintheInformationPane
Optionsdialogbox.ToopentheInformationPaneOptionsdialogbox,selectthe
buttonontheActivemenu.Toopenthepage,youcanalsoselectSetupintheDepth
informationpane.
SimradES80ReferenceManual