Simrad ES80 - Page 316

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coloursinusethiswillbea36dBcolourrangefromgreytobrown.Greyisusedforthe
weakestechoes,whilethestrongestechoesarebrown.Allechoesstrongerthanbrown
willstillbebrown,whileechoesweakerthangreywillnotbeshown.
With64coloursinuse,eachcolourrepresentsapproximately0.5dBechostrength.
Theoldpapersoundershadadynamicrangeof12dBintheirprintoutsusingthe
"colours"fromlightgreytoblack.ThedynamicrangeintheES80colourpresentation
isthusalotlarger;24dBor250times.Alongthisdynamicrangewetakethe36dB
rangeand"moveit"upanddown.
Note
Yourchoiceofcolourscalehasnoeffectonthegainsettings.Thecolourscaleonly
controlsthevisualpresentationoftheES80echodata.
Details
Gain
Thissettingcontrolsthegainappliedtothecurrentlyselected("active")echogram
Selecteithersideofthebuttontochooseavalue.Selectthemiddleofthebuttonto
openit.IfyouhaveakeyboardconnectedtotheES80,youcantypetherequested
valueintothetextbox.Youcanalsochangethevaluebyselecting-andholding-
themiddleofthebutton,andmovethecursorsideways.Movethecursortowards
lefttoreducethevalue,ortowardsrighttoincreasethevalue.Releasethemouse
buttonwhentherequestedvalueisshowninthebutton.
Applytoall
Bydefault,thegainsettingisonlyappliedtothecurrentlyselectedechogram
(identiedwithathickborder).Youmaywishtoadjustthegainonallthe
echogramsofthesametype.Todothis,clickthemiddleoftheGainbuttonto
openit,andselectApplytoall.
Relatedtasks
Adjustingthegain(echosensitivity),page91
AdjustingtheTVG(TimeV ariableGain)setting,page113
Relatedfunctions
TVGfunction,page414
SimradES80ReferenceManual