Specifications

SimradSH90
Gainandlteradjustmentprocedures
Thissectionexplainshowtocontrolthemanualandautomaticgainsettingsonthe
SH90sonar.
Topics
•Adjustingtheverticalandhorizontalgainonpage60
•AdjustingtheAutomaticGainControl(AGC)onpage61
•AdjustingtheReverberationControlledGain(RCG)onpage62
•AdjustingtheTimeV ariableGain(TVG)onpage63
•Adjustingthedisplaygainonpage64
Adjustingtheverticalandhorizontalgain
Purpose
TherangeofyourSH90sonarcanbesetindividuallyforthehorizontalandvertical
presentations.
•Thegainappliedtothehorizontalpresentationmodescanbechangedusingthe
OperatingPanelortheGainbuttonontheHorizontalmenu.
•Thegainappliedtotheverticalpresentationmodescanbechangedusingthe
OperatingPanelortheGainbuttonontheVerticalmenu.
Note
Whenthisparameterischangedonahorizontalmenu,thechosensettingisonlyput
touseonthehorizontalsonarpresentation.Ifyouchangetheparameteronavertical
menu,itisonlyappliedtotheverticalsonarslicepresentation.
Procedure
1Basicprocedure
aObservetheGaineldontheOperatingPanel.
Gain
H-
Gain
H+
Gain
V-
Gain
V+
Itprovidesseparategain
controlsforthehorizontaland
verticalsonarpresentations.
bPresstheGainH-andGainH+
buttonstodecreaseorincreasethehorizontalgain.
cPresstheGainV-andGainV+buttonstodecreaseorincreasetheverticalgain.
60
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