User manual

SimradES70
Procedure
1ClicktheActiveicon.
ThisiconislocatedundertheMainmenu.ItisusedtoopentheActive
menu.
→Activemenuonpage153
2ClickEchogramtoopentheEchogramdialog.
TheEchogramdialogallowsyoutosetuptheparameterscontrollingtheechogram
presentation.Thethreetabscontrolthehorizontallines,theechogramtypewith
appliedTVG,andhowfasttheechogrammovesacrossthedisplay.
→Echogramonpage220
3OntheLinestab,observethevariousverticalmarkersthatcanbeenabled.
Note
TheannotationsarecontrolledontheAnnotationdialog,buttoplacetheannotations
intheechogram,youmustenablethemintheEchogramdialog.
→Echogram;Linestabonpage221
→Annotationsonpage189
4Enabletheverticalmarkersyouwishtosee.
5ClickOKtosavethecurrentsettingsandclosethedialog.
SelectingTVGgainintheEchogramdialog
TheTVGcanbechosenusingtheEchogramdialog(describedhere),orwiththeTVG
buttonontheActivemenu.
→AdjustingtheTVGgainontheActivemenuonpage79
TVGmeansTimeVariedGain.
ThewholeideawithTVGisthatechoesfromshshallhavethesameecholevel(colour)
independentoftheirdepths.
TheES70hasaTVGrangedownto15000meters,whichforallpracticalpurposesis
unlimited.TheES70doesnothaveaTVGcompensatedreceiverlikemostotherecho
sounders.IntheES70theTVGismadeinsoftwareaftertheechoesfromthereceiver(s)
havebeenconvertedtodigitalformat.Inordertomakethisworkthereceivermust
haveverylargedynamicrange.
ThefollowingTVGsettingsareavailable:
aPower(NoTVG)
TVGgainisnotimplemented.Thissettingishardlyeverused.
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