Specifications

Menusystem
8TVG
ThisparameterallowsyoutochoosetheTimeV ariableGainsettingintheSH90.
ThisfunctionwillautomaticallyadjustthegainintheSH90tocompensatefor
geometricspreadingandabsorption.
9AGC
ThisparametercontrolstheAutomaticGainControl.Thisfunctionwill
automaticallyreducethegainifyouexperiencereverberationandnoise,orincrease
itiftheconditionspermitit.
10RCG
ThisparameterisusedtocontroltheReverberationControlledGain.Thisfunction
willautomaticallyremoveunwantedreverberationfromthebottomorfromthesea
surface.Itmayhoweveralsoremovescatteredshfromthepresentation.
11PPFilter
Thisparametercontrolstheping-pinglter,whichreducestheamountofunwanted
noiseandechoesonthescreen.Thelterwillonlyshowyoutheechoesiftheyare
stillpresentafterseveralconsecutivepings(2,4or8).Thisfunctionwillprovide
youwithamorestableechopresentation,asspuriousechoeswillbesuppressed.
12Status
TheStatusparameterdialogcontainsatransducerpositionindicator,aswellas
presentationofcurrenttime,date,latitude,longitude,headingandspeed.Someof
thebuttonsallowyoutoadjusttheseparameters.
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