Simrad ES80 - Page 117

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Onlyechoesdetectedandinterpretedassingleshareshown.Theechoesare
compensatedfortheirphysicalpositioninthebeam(beamcompensation).This
meansthatshintheouterregionofthebeamareadjustedtocorrectsizeeven
thoughtheirechoesareweaker.
Note
ThisTVGsettingonlyworkswithsplitbeamtransducers.
•TargetMix(40logR)
ThissettingusesthesameTVGamplicationasFish(40logR),butadditionalbeam
compensationisimplemented.Echoesdetectedandinterpretedassingleshare
adjustedtotheircorrectsizeaccordingtotheirphysicalpositioninthebeam.
Note
ThisTVGsettingonlyworkswithsplitbeamtransducers.
•User
ThissettingallowsyoutodeneyourownTVGsetting.TochooseyourownTVG
curve,usethededicatedfunctionintheEchogramdialogbox.
Note
Thesettingyouchoosewillonlybevalidforthecurrently"active"echogram.The
"active"echogramviewisidentiedwithathickerborder .Normally,youmustrstclick
inthechosenechogramto"activate"it,andthenchoosethesettingyouwishtouse.
Procedure
1Clickintheechogramviewyouwishtochange.
Thiswillmaketheview"active".The"active"echogramviewisidentiedwith
athickerborder.
2OpentheActivemenu.
3SelectEchogram.
ObservethattheEchogramdialogboxopens.
4OntheleftsideoftheEchogramdialogbox,selectEchogramtoopenthepage.
5ChooseyourrequestedsettingforTVG(TimeVariableGain).
6Applythechangeyouhavemade.
aSelectApplyifyouwishtoapplythechosensettingonlytothecurrentlyactive
echogramview.
bSelectApplytoAllifyouwishtousethechosensettingonalltheechograms
ofthesametype.
Operatingprocedures