44
406273/C
3Thefollowingmethodscanbeusedforthisadjustment.
•Method1:Select[+]or[-]tochoosethelevel.
•Method2:Selectthemiddleofthebutton,holdthemousebuttondepressed.
Dragthecursorsidewaystoincreaseordecreasethelevel.
•Method3:Selectthemiddleofthebuttontoopenthemenu.Typetherequested
value.
YoucanonlydothisifyouhavecomputerkeyboardconnectedtoyourProcessor
Unit.
Note
RememberthatinaBottomechogram,theStartRangevaluemustbenegative.
4LocatetheRangefunction.
Rangefunction,page309
5Thefollowingmethodscanbeusedforthisadjustment.
•Method1:Select[+]or[-]tochoosethelevel.
•Method2:Selectthemiddleofthebuttontoopenthemenu.Selectavaluefrom
theoptionsprovided.
•Method3:Selectthemiddleofthebuttontoopenthemenu.Typetherequested
value.
YoucanonlydothisifyouhavecomputerkeyboardconnectedtoyourProcessor
Unit.
Note
ByselectingAuto,theES80automaticallyadjuststherangeaccordingtothe
currentdepth.
Example
Inasurfaceechogram,settheStartRangevalueto0meters.Thiswillmakethe
echogramstartfromtheseasurface(providedthatthetransduceroffsethasbeen
dened).SetRangetothecurrentdepthplus20meters.Theechogramwillnowshow
theareafromtheseasurfaceanddownto20meters"below"thebottom.Thebottom
contouriseasilydetectedwhenthedepthchanges.
Inabottomechogram,settheStartRangevalueto–5meters.Thiswillmakethe
echogramstartfrom5metersabovethebottom.SetRangetothe5metersplus10=15
meters.Theechogramwillnowshowtheareafrom5metersabovethedepth,anddown
to10meters"below"thebottom.Thebottomcontourwillappearasaatline.
SimradES80ReferenceManual