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Ifyoudonotwanttoseetheechogramfrom0meters,youcanestablishanoffsetin
theechogramintheStartRangefunction.
•Gain
WhenyoucongurethePXTrawlEye,youcanselectthekeyparametersrelatedtoits
echosounder,checkthebatterystatusorevenconguresomespecialfeatureslikethe
learnmode.TheGainfunctionallowsyoutochangethedisplaygain.
•HorizontalAxis
TheechogramstravelsfromrighttowardsleftacrosstheTV80presentation.Onthe
HorizontalAxisfunctionyoucanchoosethehorizontalscaleofthePXTrawlEye
echogram.Thiscontrolsthe"speed"oftheechogram.
•ColourScale
ThecolourscalesusedbytheTV80aredesignedtoreectthehowstrongtheechoesare.
Theechostrengthismeasuredindecibels(dB).Inthebasiccolourscalewith12colours,
eachcolourrepresentsa3dBstep.Thismeansthattheentirescalecovers36dB.The
dynamicrangeoftheTV80ismuchlarger.TheColourScaleparametersallowyouto
changethelowerlimitofcolourscalerangetomatchthecurrentechoes.
•RangeMarker
TheRangeMarkerallowsyoutoplaceavisualmarker,whichisathickredhorizontal
line,tohelpyouvisualizeandanalyzetheechoesontheechogramview.Theoptions
availabledependonthevaluesyoudenedintheRangeandStartRangefunctions.
•Ping-PingFilter
ThePing-PingFilteranalysesthehistoricalinformationfrompreviousconsecutivepings
inordertoremoveunwantednoiseandinterferencefromtheTV80presentation.
Contextsensitivity
ThismenuisonlyavailableifaTrawlEyeviewis“active”.
ToactivateaTrawlEye(orechogram)view,clickinit.
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