
SimradSH90
Parameterdescriptions
About
Dialogdescription
TheAboutparameterdialogisopenedwiththeAboutbutton
ontheSystemtestmenu.
TheAboutdialogisonlyusedtoprovideinformationaboutthe
currentsoftwareversion.Inaddition,theVersionsbuttonopens
asmalltextdocumentwithdetailedsysteminformation.This
informationisnotintendedforoperationaluse.
Relatedtopics
•SystemTestmenuonpage105
AGC
Dialogdescription
TheAGCparameterdialogopenswhenyouclicktheAGCbutton
intheHorizontal,VerticalandVertical180menus.
TheAGC(AutomaticGainControl)functionadjuststhegain
inthesonar’spreampliercircuitry.Thisgaindependsonthe
strengthoftheincomingechosignal.Theresultisaltereffect,
reducingnoiseandreverberation.Asshowinthemenu,theAGC
hasfourdifferentsettings.
AGCdialogoptions
•Off:Nogainadjustment
•Weak:Slowgainadjustment
•Medium:Mediumfastgainadjustment
•Strong:Fastgainadjustment
•Close:Clicktoclosetheparameterdialog.
•Help:Clicktoaccesstheon-linehelp.
Relatedtopics
•Horizontalmenuonpage93
•Verticalmenuonpage95
•Vertical180menuonpage96
•WhatisAGC?onpage179
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