Raymarine E70532 - Playing Back Sonar History; Fishfinder Sensitivity Controls

ThescrollingimagecanbeplayedbackfromanypointsincetheFishfinder
appwasopened.
Playingbacksonarhistory
TheFishfinderapp
’ssonarhistorycanbeplayedback.
WiththeFishfinderappinscrollingmode:
1.Pressanybuttononthe[Directionalpad]orpressthe[OK]buttonwhen
viewingaRealVisionchannel.
TheFishfinderappwillenterPause/playbackmode.
2.Usingthe[Directionalpad],movethecursorinthesamedirectionthatthe
imageisscrolling,untilyoureachtheedgeofthescreen.
e.g.:whenviewingaDownVisionchannelusethe[Left]buttononthe
[Directionalpad]topositionthecursorontheleftedgeofthescreen,
continuetopressthe[Left]buttontostartscrollingbackthroughthe
availablesonarhistory.
8.7Fishfindersensitivitycontrols
Optimumperformanceisusuallyachievedusingthedefaultsettings.Y ou
canadjusttheimageusingtheSensitivitycontrolstoimprovethedisplayed
image.Sensitivitysettingadjustmentisalsoappliedtothesonarhistorythat
isdisplayedwhenusingsonarscrollback.
ThesensitivitycontrolscanbeaccessedfromtheFishfinderappmenu:
[Menu>Adjustsensitivity].
Thefollowingsensitivitycontrolsareavailabletohelpyouoptimizethe
sonarimage.
ControlDescription
[Gain]
Thegaincontroldeterminesthesignalstrengthatwhich
targetreturnsareshownonscreen.
Thegaincontrolcanbesetto[A
uto]or[Manual].InAuto
youcanapplyanoffsetofupto±50%.
Ahighervalueproducesmoretargetreturnsandnoise
onscreen.
[Intensity]
Theintensitycontrolsetsthelowerlimitforthecolorused
forthestrongesttargetreturns.Alltargetreturnsabovethis
valuearedisplayedinthestrongestcolor
.Thosewitha
weakervaluearedividedequallybetweentheremaining
colors.
Theintensitycontrolcanbesetto[Auto]or[Manual].In
Autoyoucanapplyanoffsetofupto±50%.
[SurfaceFilter]
Thesurfacefiltercontroldeterminestheamountofnoise
displayedonscreenbyvaryingthegainthroughoutthe
watercolumn.
Alowervaluedecreasesthedepthatwhichthecontrol
isapplied.
Thecontrolcanbesetto[A
uto]or[Manual].
[AlltoAuto]
SetsallSensitivitycontrolsto[Auto]with0%offset,where
applicable.
Fishfinderapp
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