Simrad ES80 - Page 260

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AThisisthestartdepthoftheechogram
InaSurfaceechogramyoumaywishtostartthe
echogramfromthesurface,andwillthensetthe
StartRangeto0(zero).Youwillthenseethe
transmitpulseasastrongechoatthetopofthe
echogram.TrysettingStartRangetoasmall
value,forexample1meter.Theechogramwill
thenstartimmediatelyunderthekeelortransducer
face.
BThisisthebottom(seabed)
Thebottomisshownwithastrongcontour.Since
theechogramisreferencedtotheseasurface,the
bottomwillvarywiththeactualdepth.Different
bottomconditionswillhaveavisualeffectonhow
thebottomechoisdrawn.Ahardbottom(rock)
willgiveyouastrongerecho-andthusadarker
colour-thanasoftbottom(mudorsilt).
TheEchogrampageintheEchogramdialogbox
allowsyoutomakeadjustmentstothebottomcontour.Youcanaddablackbottom
line,andawhitelinetomakethebottom"standout".Youcanusethehardness
linetoindicatehowhardthebottomis.
CTransduceridentication
Thistextidentiesthetransducer-andthusalsothechannel-usedtocreatethe
echogram.Inthiscontext,thephrasechannelisusedasacommontermtoidentify
thecombinationoftransceiver,transducerandoperatingfrequency.
DThisisthescopeview
TheScopeviewisusedtoindicatehowstrongeachechois.Thecolourandthe
lengthofeachlinereectsthereceivedechoamplitude.
EThesearethelabels
Smalllabelsareshowninthebottomleftandrightcornersoftheechogram.These
labelscancontaintimeordistancetoidentifythehorizontalaxisoftheechogram.
Youcanhidethelabelsfromview.
•None:Thelabelsarehidden
•Auto:Thehorizontalscaleissetautomatically
•Time:Thehorizontalscaleisdenedbytime.Thetimeshowninthebottom
rightcorneroftheechogramisthenthecurrenttime(now).
•Distance:Thehorizontalscaleisdenedbydistance.Thedistanceshowninthe
bottomrightcorneroftheechogramisthen0nauticalmiles(startingpoint).
ThelabelinformationcanbechangedusingtheLabeloptionsontheHorizontal
AxispageintheEchogramdialogbox.
SimradES80ReferenceManual