Installation manual

Table Of Contents
SimradSH90
PulseForm:Usethisfunctiontoselecttheformofthe
transmittedpulse.ThiscouldeitherbeFM(Frequency
modulation)withdifferentpulselengths,orCWwithdifferent
pulselengths.(►PulseFormonpage149)
TXPower:Thisbuttoncontrolsthetransmissionpower.
(►TXPoweronpage173)
Beam:Thisbuttonallowsyoutochooseverticalbeamwidth
inthehorizontalpresentation.(►Beamonpage123)
TVG:TimeVariedGain.Thisfunctionwillautomatically
adjustthegaininthesonartocompensateforgeometric
spreadandabsorption.NotethattheTVGwillonlywork
withintherst1000meters.(►TVGonpage172)
AGC:AutomaticGainControl.Thisfunctionwill
automaticallyreducethegainifyouexperiencereverberation
andnoise,orincreaseitiftheconditionspermitit.Usingthe
AGCwillensurebestpossiblesignalprocessing.(►AGC
onpage122)
RCG:ReverberationControlledGain.Thisfunctionwill
automaticallyremoveunwantedreverberationfromthe
bottomorfromtheseasurface.Itmayhoweveralsoremove
scatteredsh.(►RCGonpage153)
NoiseFilter:Thisltercanbeusedtominimizethe
interferencefromotheracousticsystems(sonarsandecho
sounders)onyourownandothervessels.Itwillalsosuppress
noisefromyourpropellers,andfromothersimilarnoise
sources.(►NoiseFilteronpage146)
PPFilter:ThePing-to-Pinglterwillonlyshowyouthe
echoesiftheyarestillpresentafterseveralconsecutivepings
(2,4or8).Thisfunctionwillprovideyouwithamorestable
echopresentation,asspuriousechoeswillbesuppressed.
(►PPFilteronpage148)
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323775/B