Raymarine A65 - How the Fishfinder Works; Raymarine Sonar Modules

15.1Howtheshnderworks
Theshnderapplicationusesasonarmoduleandasuitablesonar
transducer.Thesonarmoduleinterpretssignalsfromthetransducer
andbuildsupadetailedunderwaterview.
Thetransducerislocatedonthebottomoftheboat,itsendspulses
ofsoundwavesintothewaterandmeasuresthetimeittakesforthe
soundwavetotraveltothebottomandback.Thereturningechoes
areaffectedbybottomstructureandbyanyotherobjectsintheir
path,forexamplereefs,wrecks,shoalsorsh.
Colorsareusedonthedisplaytoindicatethestrengthofthereturns.
Youcanusethisinformationtodeterminethebottomstructure,
thesizeofshandotherobjectsinthewater,suchasdebrisor
airbubbles
Note:Sometransducersincludeadditionalsensorstomeasure
watertemperatureand/orspeed.
15.2Raymarinesonarmodules
ThetablebelowlistsRaymarine’ssonarmodulesandwhether
CHIRPtechnologyisused.
DSM30clearpulse–non-CHIRP
DSM300clearpulse–non-CHIRP
CP450Cclearpulse–CHIRP
NewaSeries(internalsonar)clearpulse–non-CHIRP
NewcSeries(internalsonar)clearpulse–non-CHIRP
NeweSeries(internalsonar)clearpulse–non-CHIRP
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NewaSeries/NewcSeries/NeweSeries