Simrad EK15 - Pelagic Echogram

SimradEK15
DThisisthescopeview.
Thisviewpresentsindividualcolourlines.Thecolourandlengthofeachline
reectsthereceivedechoamplitude.
EBydefault,the“pingtime”andthedepthrangeisshowninthebottomleftsideof
theechogram.Inthebottomrightcorner,the“pingtime”isthesameascurrent.
ThisinformationcanbechangedusingtheoptionsontheHorizontalAxistabinthe
Echogramdialogbox.
FThisisthelowerendofthedepthrange.Itisnormallyafewmetersbelowthe
bottomcontour,dependingonthechosenrange.
Example8StartRangeandRangeinbottomrelatedechogram
Inabottomechogram,settheStartRangevalueto–5meters.Thiswillmakethe
echogramstartfrom5metersabovethebottom.SetRangetothe5metersplus
10=15meters.Theechogramwillnowshowtheareafrom5metersabovethe
depth,anddownto10meters“below”thebottom.Thebottomcontourwillappear
asaatline.
ThebiomasscalculationismadeinthesamewayasforSurfaceechograms.
Relatedtopics
•StartRangefunctiononpage146
•Rangefunctiononpage144
•Echogramdialogboxonpage206
Pelagicechogram
Thepelagicechogramappearsverysimilartothesurfaceechogram.However,the
biomasscalculationsarenotlimitedbythebottomdetection.
Example9StartRangeinapelagicechogram
Inapelagicechogram,settheStartRangevalueto20meters.Thiswillmakethe
echogramstartfrom20metersbelowtheseasurface(providedthatthetransducer
offsethasbeendened).SetRangeto40meters.Theechogramwillnowshow
theareafrom20metersbelowtheseasurface,anddownto60metersbelowthe
transducer.Providedthatthedepthislargerthan60meters,thebottomcontour
isnotshown.
Thebiomasscalculationsarenotrestrictedbythebottomdetection.Thismeansthatthe
bottomechowillbeincludedincalculationsifitappearswithinthechosenrange.
Relatedtopics
•StartRangefunctiononpage146
•Rangefunctiononpage144
•Echogramdialogboxonpage206
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