Raymarine C140w - Page 111

TuningmethodRelatedoptionsDescription
EnhanceEchoes
functions:
•Interference
rejection—this
functionminimizes
theeffectof
interferencefrom
otherradar-eqipped
vessels.
•Expansion—
enablesyouto
overridethedefault
radarpulselength,
providinglargertarget
returns.
•Wakes—enables
youtoseethe
directionandspeed
ofmovingtargets
relativetoyour
vessel.
INT.REJECTION:
•ON—minimizes
theeffectof
interferencefrom
otherradar-equipped
vessels.
•OFF—allowsyouto
detectthepresence
ofotherradarsinthe
vicinity.
EXPANSION:
•ON—increases
thepulselength.
Thisprovideslarger
targetreturns,making
themeasiertosee.
However,larger
returnsmaydecrease
targetresolution,and
mergeonthedisplay.
•OFF—thisisthe
defaultsetting.It
providesbetterrange
resolution,giving
youmoredened
(butsmaller)target
returns.
WAKES:
•ON—showsthe
directionandspeed
ofmovingtargets
Theenhanceechoes
functionsenableyouto
minimizethenegative
effectsofechoesonthe
radardisplay.
TuningmethodRelatedoptionsDescription
relativetoyour
vessel.Targetsare
displayedinyellow,
turningtopaler
shadesofblueas
thesignaldiminishes.
Theoptionsare:10
sec,30sec,1min,5
min,10min.
•OFF—doesNOT
showthedirection
andspeedofmoving
targetsinrelationto
yourvessel.
Tunecontrol
•AUTO—the
defaultmode.
Theradartunes
itselfautomatically
onallrange
scales.Raymarine
recommendsthat
youleavethetune
functioninAUTO
modetoreceivethe
maximumsignal.
•MANUAL—enables
youtomanuallyset
thetuning.Adjust
thecontroltoobtain
themaximumsignal
strength.Ifyouadjust
thesettingshortly
afterpoweringup
theradarscanner,
Theradartuningcontrol
enablesyoutone-tune
theradarscanner’s
receiverformaximum
targetreturnsonthe
display.
Usingradar
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