Raymarine C140w - Page 117

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.There
aretwosettings—
NORMAL,andHIGH.
•OFF—allowsyouto
detectthepresence
ofotherradarsinthe
vicinity.
EXPANSION:
•ON—increasesthe
pulselength,giving
largertargetreturns
thatareeasierto
see.However,larger
returnsmaydecrease
targetresolution,
andmergeonthe
display.Thereare
twosettings—LOW
andHIGH.
•OFF—thisisthe
defaultsetting.It
providesbetterrange
resolution,giving
youmoredened
(butsmaller)target
returns.
Theenhanceechoes
functionsenableyouto
minimizethenegative
effectsofechoesonthe
radardisplay.
TuningmethodRelatedOptionsDescription
WAKES:
•ON—youcansee
thedirectionand
speedofmoving
targetsrelativeto
yourvessel.Targets
aredisplayedin
yellow,turningto
palershadesof
blueasthesignal
diminishes.The
optionsare:10sec,
30sec,1min,5min,
10min.
•OFF—youwillNOT
beabletoseethe
directionandspeed
ofmovingtargets
inrelationtoyour
vessel.
Tunecontrol
•AUTO—the
defaultmode.
Theradartunes
itselfautomatically
onallrange
scales.Raymarine
recommendsthat
youleavethetune
functioninAUTO
modetoreceivethe
maximumsignal.
•MANUAL—enables
youtomanuallyset
Theradartuningcontrol
enablesyoutone-tune
theradarscanner’s
receiverformaximum
targetreturnsonthe
display.
Usingradar
117