Simrad EK15 - Page 214

SimradEK15
Thebiomassisautomaticallycalculatedbasedonchoicesyoumakeinthe
CalculationIntervaldialogbox;withinagiventimeframe,adenednumber
ofpings,oraportionoftheechogramview.Thedataisthentakenfroman
echoareastartingimmediatelyafterthetransmitpulse,andendingjustover
thedetecteddepth.
Ifyouhavelimitedyourverticalrange(usingtheRangeandStartRange
settings),theresultingareaisusedforthebiomasscalculation.Iftheseabed
isclearlydenedwithauniquebottomdetection,thebottomechowillnot
be
includedinthecalculations.Therefore,ifyouswitchthebottomdetectoroff,
thebottomechowillbeincludedinthecalculation.
bBottom
Theechogramisrelatedtothedetectedbottom.Stopdepth(lowerechogram
boundary)andverticalrangearemanuallyselectedbytheStartDepthand
RangebuttonsontheMainmenu.Theechogramisonlydrawnforpingshaving
asuccessfulbottomdetection.
ThebiomasscalculationismadeinthesamewayasforSurfaceechograms.
cPelagic
ThisechogramisnearlyidenticaltotheSurfaceechogram.However,the
biomassiscalculatedinadifferentmanner.
Thebiomasscalculationsarenotrestrictedbythebottomdetection.This
meansthatthebottomechowillbeincludedincalculationsifitappearswithin
thechosenrange.
3BottomTVG
UsethiseldtosetuptheTVGforthebottomdetector.
4UserTVG
UsethisspinboxtodeneyourownTVGcurve.
Note
Forthischoicetotakeeffect,theTVGtypemustbesetto“User”.
5Applytoall
Clickthisboxifyouwishtoimplementyourchangestoalltheechogramspresently
inuseontheEK15.
Topics
•Echogram;Linestabonpage208
•Echogram;Echogramtabonpage210
•Echogram;HorizontalAxistabonpage213
Relatedprocedures
•Addinghorizontalmarkerstotheechogramonpage65
•Addingverticalmarkersandannotationstotheechogramonpage66
•SelectingTVGgainintheEchogramdialogboxonpage67
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