Simrad TV80 - Page 257

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operatingontheTV80frequencyrange.Thislterhasbeenimplementedtoremedy
forsuchinterferenceproblemsaswell.
Note
WerecommendthatyouswitchthislterOniftherearelargeuctuationsin
thedisplayeddata,oriftherateofchangeissmall.Nolteringispreferableif
instantaneousreadingsarerequired,sincethisshortensthedelaybetweenupdating
thechangesinsensordata,andthecorrespondingdisplayedinformation.
WaterProle
UsethissettingtosetuptheTV80foroperationinfreshorsaltwater.
DetectionThreshold(DT)
Thisparameterisusedtocontrolthethresholdlevelfordetectionofsignals.Signals
belowthethresholdlevelwillnotbedetected,whilesignalsabovethethresholdwill
bedetected.Settingthethresholdleveltoolowmaycausefalsesignalstobedetected.
Ifthedetectionthresholdissettoohigh,thesignalfromthecatchmonitoringsensor
willnotbedetected.
FortheTV80system,twodifferentparameterrangesareused.
•3to14
Byincreasingtheparametervalue,thethresholdlevelisincreased.
•15to20
Byincreasingtheparametervalue,thethresholdlevelisdecreased.
ThedefaultvalueforDetectionThreshold(DT)is17.
Maxshootingspeed
TheTV80hasabuilt-inDopplercompensationfunctionwhichissetupusingthis
parameter.Theparameterandrelatedfunctionis,however,onlyrelevantifsensordata
isdesiredwhilethepurseseineortrawlisbeingdeployed.Ithasnoeffectoncethe
vesselisstoppedandwaitingforthenetortrawltosink.
Note
Ifyousetthisparametertoohigh,youmaycreateaconictwiththechannelselection.
Relatedtopics
DeningreceiverparametersforthePI50andPI60ReceiverUnits,page42
AdjustingthereceiversensitivityforthePI50andPI60ReceiverUnits,page124
ReducingnoisedisturbancefromthedatareceivedonaSR15orSR70ReceiverUnit,
page125
Functionsanddialogboxes