Simrad ES80 - Choosing Range and Start Range Values in a Bottom Related Echogram

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Thefollowingmethodscanbeusedforthisadjustment.
•Select[+]or[-]tochoosetherequestedsetting.
•Selectthemiddleofthebutton,holdthemousebuttondepressed.Dragthe
cursorsidewaystoincreaseordecreasethelevel.
•Selectthemiddleofthebuttontoopenthemenu.Typetherequestedvalue.
YoucanonlytypeanewvalueifacomputerkeyboardisconnectedtoyourES80
ProcessorUnit.
5LocatetheRangefunction.
6ChooseapositivevalueforRangetoplacethebottomoftheechogramatthe
preferreddepthoverorunderthebottom.
Relatedtopics
Rangefunction,page309
StartRangefunction,page310
Observationrangeversusoperationalfrequency,page457
Aboutbottomechoes,page458
ChoosingRangeandStartRangevaluesinabottomrelated
echogram
ABottomechogramismainlyusedwhenyouwishtoexaminetheechoesfromsh
closetothebottom.InaBottomechogram,thestartdepthoftheechogramisdened
bythenegativeStartRangedepthvalue.Therangefromthisstartdepthisdened
bytheRangevalue.
Context
TheRangesettingdeneshow"deep"youwishtheES80todetectechoes.Inother
words,thisistheverticaldistancebetweenthe"top"andthe"bottom"oftheechogram.
TheRangesettingspeciesthe"bottom"depth,whiletheStartRangesettingspecies
the"top"depth.
Therangeyouspecifyappliestothecurrentlyselectedechogram.Itisidentiedwitha
thickborder.Severalechogramtypesareavailable.
InaBottomechogram,theRangevalueis"added"totheStartRangevaluetodetermine
theverticaldepthoftheechogram.TheStartRangevaluemustbenegativebecausethe
echogramshallstartfromapreferredheightoverthebottom.
Operatingprocedures