Simrad PI GEOMETRY - QUICK REFERENCE GUIDE REV B Manuale di Installazione Pagina 23

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 224
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 22
SimradSH90
selectedamountoftransmissions(pings),andanechohastobe
presentintheselectedamountofpingsinordertobepresented
onthedisplay.
Notethatinroughseas,whenthebeameasilycanmissthetarget
inseveralpings,thePPFiltermustbeusedwithcare.
TVG(TimeVariableGain)
TheTimeV ariableGain(TVG)functioncontrolsthegainof
thereceiversothataschoolwithagivensizeanddensityis
presentedwithapproximatelythesamestrengthonthedisplay,
insidetheregulatedTVGrange.Thiscanalsobeseenasalter,
becauseitreducesthenoiseclosetothevessel.Theregulated
strengthoftheTVGcanbeselectedinthemenu.
Noiselter
Thenoiselterisdesignedtoremoveunwantedacousticnoise
fromthesonarpicture.Itwillreducetheinterferencefromother
acousticsystems(sonarsandechosounders)onyourownvessel
andfromothervesselsinthevicinity.Itwillalsosuppressthe
noisefromyourownpropellersandfromothersimilarnoise
sources.
Transmission
ThetransmissioniscontrolledfromtheProcessorUnit.The
parametersyouhavechosenaretransferredtotheTransceiver
UnitbymeansoftheEthernetcable.
TheTransceiverUnitcontains480transmitterchannelswhich
aredistributedon16identicaltransceivercircuitboards.Each
transmitterchannelisindividuallyloadedwiththeparametersfor
therelevanttransducerelementposition.Theparametersinclude
poweroutputandtimedelaytoformabeamwiththeselected
beamangle.
Whenthestabilisingsystemisactive,thetiltangleforeachbeam
willautomaticallybecorrectedrelativetothevessel’spitchand
rollmovements.
Optionalfunctionality
TheSimradSH90isasingle114kHzsonarwithbeam
stabilisation.
Theoptionsdescribedbelowarepreprogrammedintothe
standardsoftwareversion,andacodewordisrequiredtomake
theactualoptionavailable.
Scienticoutput
323775/B
21
Vedere la pagina 22
1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 223 224

Commenti su questo manuale

Nessun commento