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Activemenu
TheActivemenuoffersparametersrelatedtocurrentviewsanddatapresentationsshown
bytheES80.
Howtoopen
SelecttheActiveicon.
TheiconislocatedundertheMainmenu.Selectthe
icononemoretimetoclosethemenu.
Description
•TVG(TimeVariedGain)
TVG(TimeVariableGain)compensatesforthelossofacousticenergydueto
geometricspreadandabsorption.Thismakesthetargetswiththesamestrengthappear
withthesameintensityindependentoftheirphysicaldistancefromthetransducer.
TVGfunction,page414
•Ping-PingFilter
ThePing-PingFilteranalysesthehistoricalinformationfrompreviousconsecutive
pingsinordertoremoveunwantednoiseandinterferencefromtheES80presentation.
Ping-PingFilterfunction,page417
•BottomGain
TheBottomGainsettingcontrolsthegainbelow
thedetectedbottomdepth.Different
bottomconditions(rock,sand,mudetc)willresultindifferentbottomechoesin
theES80echograms.Bychangingthebottomgain,thepresentationischanged
dependingonthebottomtype.
BottomGainfunction,page418
•Echogram
TheEchogramdialogboxallowsyoutosetuptheparameterscontrollingthe
echogrampresentation.Twopagescontrolthehorizontallinesandtheechogramtype
withappliedTVG(timevariablegain).Onepagecontrolshowfasttheechogram
travelshorizontallyacrossthepresentation.
Echogramdialogbox,page419
Menusystem
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