Raymarine Dragonfly-5 DVS User Manual

D6855-3
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ItemDescription
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Ahardbottom(sand)producesathinline.
2
Asoftbottom(mudorseaweedcover)produces
awideline.
3Arockyorunevenbottomorawreckproduces
anirregularimagewithpeaksandtroughs.
Thedarklayersindicateagoodecho;thelighter
areasindicateweakerechoes.Thiscouldmeanthat
theupperlayerissoftandthereforeallowingsound
wavestopasstothemoresolidlayerbelow.
Itisalsopossiblethatthesoundwavesaremaking
twocompletetrips–hittingthebottom,bouncingoff
thevessel,thenreectingoffthebottomagain.This
canhappenifthewaterisshalloworthebottomis
hard.
Factorsinuencingthesonarimage
Thequalityandaccuracyofthedisplaycanbe
inuencedbyanumberoffactorsincludingvessel
speed,depth,objectsizeandbackgroundnoise.
Vesselspeed
Theshapeofthetargetchangesalongwithyour
speed.Slowerspeedsreturnatter,morehorizontal
marks.Higherspeedscausethetargettothicken
andarchslightly,atfastspeedsthemarkresembles
adoubleverticalline.
Targetdepth
Thecloserthetargettothesurface,thelargerthe
markonscreen.
Thedepthofindividualtargetscanbedisplayedby
switchingontheTargetDepthIDinthesonarmenu
Menu>DisplayOptions.Thenumberoftarget
depthsdisplayedisinuencedbytheshalarm
sensitivitylevel.
Waterdepth
Aswaterdepthincreasessignalstrengthdecreases,
resultinginalighteron-screenimageofthebottom.
Sizeofthetarget
Thelargerthetarget,thelargerthereturnon-screen.
Thesizeofashtargetisalsodependentuponthe
sizeofthesh’sswimbladderratherthanitsoverall
size.Theswimbladdervariesinsizebetween
differentbreedsofsh.
Clutter/Backgroundnoise
Thesonarimagemaybeimpairedbyechoes
receivedfromoatingorsubmergeddebris,
particulatematter(suchasplankton,phytoplankton,
orsiltetc.),airbubblesoreventhevessel's
movement.Thisisknownas‘backgroundnoise’or
‘clutter’andiscontrolledbytheSensitivitysettings.
Ifrequiredyoucanadjustthesettingmanually.
Fishnderapplications
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Raymarine Dragonfly-5 DVS Specifications

General

Display Size	5 inches
GPS	Yes
Chartplotter	Yes
Waterproof Rating	IPX6 and IPX7
Transducer	Included
Depth Range	Up to 600 feet (183 meters)
Mounting	Flush mount or bracket mount
Display Resolution	800 x 480 pixels
Dimensions	145 mm x 145 mm x 56 mm
Weight	0.7 kg