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Page 1: ...airs Ifyou dohavetoreturntheunitforservice pleaseenclose aletterstatingthe problem that you are having withthe unit This will assistus in the testingandrepairofyourdepth sounder Mailto EAGLE ELECTRONI...
Page 2: ...proximatelyonesecond Three miles perhouris4 4 feetper second and the diameter ofthe circlecovered bythetransducer is approximatelyfour feetat that depth The signal returned by afish 15 feet deep woul...
Page 3: ...Note the unitmust be runningwhenyou makethis test Holesin the base ofthe bracket allowwood screworbolt mounting Thread both knobs partiallyinto the mounting bushings on the case The gimbalbrackethas...
Page 4: ...veflotationmaterials such as wood or foam inbe tween layers offiberglassif thematerialis removedfrom the chosenarea For example somemanufacturers use a layer offiberglass then acore ofbalsawood andthe...
Page 5: ...menthulls Watershould flowsmoothly in this area anditshould stay in the wateratallspeeds 3 Before permanently bonding the transducer tothehull trialruns are recommended tofindthebest mounting lo catio...
Page 6: ...outsideedge ofthe hull See Figure 8 The transducershouldbe mounted away fromstakes ribs or otherhullfittings thatcan causeturbulence 4 Ifthehulldeadrise exceeds 4 degrees ashoot thru hull mount on the...
Page 7: ...PERATION SENSITIVITY AND ON OFF KNOB Thisknob operates in amanner similar tothe volumecontrol on aradio Thrningthe knob clockwise will turnthe uniton andturningthe knob back the full counterclockwisep...
Page 8: ...y 4 800feetpersecondthrough wateras comparedtoapproxi mately1 100feet persecond throughair The way a sonar worksinits simplest formisanelectrical pulse isconvertedinto asound waveby thetransducer and...
Page 9: ...ingpoint to measure depth and as anindi cator thatthe depth sounder is on Even though the neonbulb flashes it happensso oftenthat the humaneye sees it as a nearly constant light The bulb alsoflashes a...
Page 10: ...anevenwider one with occasional flashesabove andbelowthe levelof the true bottom thoughthese signals aren tso distinct as the ones re turnedby scattered rocks on a smoothbotto m Bigrocksorstumps on a...
