Raymarine E90W - Page 174

•Low(Cruising)isidealforviewingshnderimageswitha
minimumofbackgroundnoiseasyouarecruisingtoyourshing
spot.Onlythestrongestechoesaredisplayed.
•Medium(Trolling)isaslightlyhighergainsettingthatdisplays
moredetail.Thisisthedefaultmode.
•High(Fishing)providesthemostdetail,butalsodisplaysthe
mostbackgroundnoiseandsurfaceclutter.
Manual
Ifnecessaryyoucansetthegaincontrolsmanually,betweena
valueof1to100(defaultvalueis75).Thisvalueshouldbeset
highenoughtoseeshandbottomdetailbutwithouttoomuch
backgroundnoise.Generallyahighgainisusedindeepand/or
clearwater;alowgaininshallowand/ormurkywater.
Thenewvaluesremainsetevenwhenyouswitchoffthedisplay,
theyareappliedtoboththeactivewindowandanyothershnder
windowswiththesamefrequency.
Selectingautomaticshndergain
Fromthemainshnderscreen:
1.PressthePRESENTATIONsoftkey.
2.PresstheGAINsoftkey.
3.PresstheGAINsoftkeyuntiltheAUTOoptionisselected.
4.Usethetrackpadtoselecttheautomodeyouwant.
5.PresstheOKbutton.
Adjustingtheshndergainmanually
Fromthemainshnderscreen:
1.PressthePRESENTATIONsoftkey.
2.PresstheGAINsoftkey.
3.PresstheGAINsoftkeyuntiltheMANoptionisselected.
4.Usetherotarycontroltoselecttheamountofgainyouwant,
betweenavalueof1to100.(Thedefaultvalueis75).
5.PresstheOKbutton.
Thenewvaluesremainsetevenwhenyouswitchoffthedisplay,
theyareappliedtoboththeactivewindowandanyothershnder
windowsdisplayingthesamefrequency.
Fishndercolorgain
Youcanadjustthecolorgaintochangethesignalstrengththreshold
forthestrongestcolorinyourshnderdisplay.
Colorgainsetsthelowerlimitforthestrongestechocolor.All
echoeswithasignalstrengthabovethisvaluearedisplayedinthe
strongestcolor.Thosewithaweakervaluearedividedequally
betweentheremainingcolors.
•Settingalowvalueproduceswidebandfortheweakestcolor,but
asmallsignalbandfortheothercolors.
•Settingahighvaluegivesawidebandforthestrongestcolor,but
asmallsignalbandfortheothercolors.
Therearetwocolorgainmodes:
•Auto.InAutomodethecolorgainsettingisautomatically
adjustedtosuitcurrentconditions.Anyadjustmentsmadeapply
toallshnderwindows.
•Manual.Youcansetthecolorgainmanually,betweenavalue
of1to100.
Adjustingtheshndercolorgain
Fromthemainshnderscreen:
1.PressthePRESENTATIONsoftkey.
2.PresstheGAINsoftkey.
3.PresstheCOLORGAINsoftkeyuntiltheMANoptionisselected.
174
E-SeriesWidescreenUserreference