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Raymarine e7 - Page 203

Raymarine e7
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Thenewvaluesremainsetevenwhenyouswitchoffthedisplay
andareappliedtoallshnderwindows.
FishnderTVG(TimeVariedGain)
TheTimeVariedGain(TVG)functionreducestheamountofclutter
intheshnderdisplaybyvaryingthegainthroughoutthecolumnof
water.Thisfunctionisusefulforreducingtheappearanceof‘noise’.
IncreasingtheTVGvalueincreasesthemaximumdepthtowhich
TVGisapplied.Ahighvaluedecreasesthegaininshallowwater
sothatonlythestrongestechoesaredisplayed.
DecreasingtheTVGvaluereducesthemaximumdepth.Alow
TVGvaluehaslittleeffectongaininshallowwater.
TVGadjustmentcanbemadeautomaticallyormanually.
Adjustingtheshndertimevariedgain
Fromtheshnderapplication:
1.SelectMenu.
2.SelectAdjustSensitivity.
3.SelectTVG.
4.SelecttheTVGmenusothatManishighlighted.
SelectingtheTVGmenuwillswitchbetweenTVGAutoand
Manualmodes.
5.UsetheRotaryControltoadjusttheTVGtotherequiredsetting.
Note:TVGhasnoeffectinshndersimulatormode.
Fishndercolorthreshold
Thecolorthresholdsettingdeterminestherangeofcolorsusedon
screen.Theeffectofthisistosetacolorthresholdbelowwhich
targetsarenotshown.Forexamplealowsettingwouldresultin
onlythestrongest(orangeandred)targetsbeingdisplayed.
Adjustingtheshndercolorthreshold
Fromtheshnderapplication:
1.SelectMenu.
2.SelectAdjustSensitivity.
3.SelectColorThreshold.
4.SelecttheColorThresholdmenusothatthesettingis
highlighted.
5.UsetheRotaryControltoadjustthecolorthresholdtothe
requiredsetting.
6.PresstheOkbutton,orselecttheColorThresholdmenuagain
toconrmthesetting.
Fishnderpower
Thepowersettingcontrolsthepowerlevelofthetransducer.
Poweroptions:
Auto.Thisisthedefaultsetting.WhenitisselectedtheDSM
automaticallydeterminestherequiredpowersettingbasedonthe
currentdepth,speed,and(bottom)signalstrength..
Manual.Ifyouwishtomanuallyadjustthepowertosuitcurrent
conditions,youcanadjustthepowerlevelbetween0%and
100%,in10%increments.Lowerpowerlevelsarenormallyused
indepthrangeslessthan8ft.(2.4m)andhigherpowerlevelsare
typicallyselectedfordepthsgreaterthan12ft.(3.7m).
Adjustingtheshnderpower
Fromtheshnderapplication:
1.SelectMenu.
2.SelectAdjustSensitivity.
Usingtheshnder
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