Raymarine a67 Wi-Fi - Fishfinder Basics and Technologies

17.1Howtheshnderworks
Theshnderapplicationusesasonarmoduleandasuitable
sonartransducer.Thesonarmoduleinterpretssignalsfromthe
transducerandbuildsupadetailedunderwaterview.
Thetransducerislocatedonthebottomoftheboat,itsends
pulsesofsoundwavesintothewaterandmeasuresthetimeit
takesforthesoundwavetotraveltothebottomandback.The
returningechoesareaffectedbybottomstructureandbyany
otherobjectsintheirpath,forexamplereefs,wrecks,shoals
orsh.
Colorsareusedonthedisplaytoindicatethestrengthofthe
returns.Youcanusethisinformationtodeterminethebottom
structure,thesizeofshandotherobjectsinthewater,such
asdebrisorairbubbles
Note:Sometransducersincludeadditionalsensorsto
measurewatertemperatureand/orspeed.
17.2Raymarinesonarmodules
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
184NewaSeries/NewcSeries/NeweSeries