4.4Testingandadjustingthe
transducer
Oncetheinitialmountingprocedureshavebeen
carriedout,thetransducermustbetestedpriorto
nishingthemounting.
Thetestingshouldbecarriedoutwithyourvessel
inthewater,withadepthgreaterthan0.7m(2.3
ft)butlessthanthemaximumdepthrangeofthe
transducer.
Important:TheSonarchannelwillbeableto
maintainreadingsathighervesselspeedsandat
greaterdepthsthantheDownVision
™
application.
1.PressandholdthePowerbuttontopowerthe
uniton.
2.CompletetheStart-upwizardandtutorial.
3.Opentherelevantapplication.
Thebottomshouldbevisibleonscreenanda
depthreadingdisplayed.
4.Startmovingyourvesselatalowspeed,ensuring
youhaveadepthreadingandaclearimageis
displayed.
5.Graduallyincreasethevesselspeedwhilst
checkingthedisplay,iftheimagebecomespoor
orthebottomismissingatlowerspeedsthenthe
transducerneedstobeadjusted.
6.Angleandheightadjustmentsshouldbemadein
smallincrementsandre-testedeachtimeuntil
youobtainoptimumperformance.
7.Loosentheratchetarmbolttoadjustthe
transducerangle.
8.Loosenthe2mountingbracketscrewstoadjust
thetransducerheight.
9.Re-tightentheratchetarmboltandmounting
screwsbeforere-testing.
Note:
•Itmaynotalwaysbepossibletoobtaindepth
readingsathigherspeedsduetoairbubbles
passingunderthetransducer.
•Itmaybenecessarytomakeseveral
adjustmentstothetransducerbeforeobtaining
optimumperformance.
•Ifthetransducerrequiresrepositioningensure
alloldholesarelledwithmarinegradesealant.
Removingthetransducer
Thetransducercanbereleasedfromthebracketby
insertingasmallmetalrodsuchasapaperclipinto
thetransducerreleaseholelocatedasshown.
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