Displayviews
“Upwards”echogram
TheEK15isauniqueproduct.Oneofitsmany
areasofapplicationisinshfarming.Onesingle
EK15installationcanthenbeusedtomonitorthe
shbehaviourandfoodwasteinalargenumberofsh
cages.Thetransducersarethenphysicallyinstalled
insidethecageswiththetransducerfacingupwards.
TheEK15transducerscanalsobeplacedatthe
seabedinopenwater-orinariver-forlong-term
monitoringoftheecosystem.Duetothefactthat
severaltransceiversandtransducerscanbeconnected
simultaneously,youcanforexampleestablishan
acoustic“fence”tomonitorshpassage.
Inordertoadjusttheechogrampresentationstothis
use,theBeamDirectionfunctionisintroduced.Unlike
thepresentationonatraditionalshndingecho
sounder,youcanselectUpwards.Thepresentationis
thenadjustedforatransducerlocatedatthebottomof
theechogramlookinguptowardstheseasurface.
AThisistheseasurface.Thethickredlineiscausedbytheairabovethewatersurface.
BThisisthetransducerface.Thetransducerislocatedatthebottom-orinopen
water-lookingupwards..
CThisisthescopeview.
Thisviewpresentsindividualcolourlines.Thecolourandlengthofeachline
reectsthereceivedechoamplitude.
DBydefault,the“pingtime”andthedepthrangeisshowninthebottomleftsideof
theechogram.Inthebottomrightcorner,the“pingtime”isthesameascurrent.
ThisinformationcanbechangedusingtheoptionsontheHorizontalAxistabinthe
Echogramdialogbox.
Tip
Onceyouturntheechogramupsidedown,severalfamiliarfeaturesarenotsouseful
anylonger.
Forbestresults,useasurfaceechogram,setStartRangeto0meters,andadjustRange
andGainforoptimalechoquality.
Relatedtopics
•BeamDirectionfunctiononpage216
351718/C
119
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