Speedwatch Wireless Speed Computer Manual de usuario

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Wireless Speed Computer

Instruction Manual

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1.Introduction

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TheSPEEDWATCHwirelessspeedcomputerisahighly

accuratemeanstomeasurespeedthroughwaterofany

low‐speedwatercraftsuchasasailboat,yacht,kayakor

smallpoweredboats.Designedfortheseriousracerand

theadvancedusers,theSPEEDWATCHgivesvaluable

feedbackontheperformanceofyourwatercraft.

Thesmallimpellerisplacedunderthecraft,inavariety

ofmountingpossibilities.Whenyourboatorkayakis

movingthroughthewater,theimpellerrotatescreating

amagneticfieldthatpenetratesthroughhullwithout

wires.Thismagneticfieldisreceivedbythesensitive

sensorattheendofacableonthetransmitter,whichis

placedwithin30cmfromtheimpeller.Thetransmitter

thensendsoutalow‐frequencyradiosignalthatis

receivedbythedisplayupto5meters.Thesignalis

processedanddisplayedasinstantspeed.

TheSPEEDWATCHusesthisspeedsignaltocalculatethe

instant,balanced,andmaximumspeedaswellasthe

tripandtotaldistance.TheSPEEDWATCHoutperforms

anyGPSwithregardstoprecisespeedanddistance

measurement,allowingforminutechangesin

performancetoberegisteredandadjusted.The

SPEEDWATCHbecomesaninvaluabletoolwhensailing

orrowingincurrents,asitmeasurestruespeedthrough

water,ratherthanaveragespeedoverlandlikeaGPS.

Themagnetizedimpellerrequiresnopowersource,the

transmitterusesa9Vbattery,andthedisplayincludesa

long‐lifeLithiumbattery,goodforhundredsofhoursof

use.

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Functions

Speed:Instant,balanced,maximum,average

Distance:Trip,total

Chronometer:Automaticormanual

CountdownTimer:10,6,5,3,or1minute(s)

Timeofday:AM/PMmode

Backlight:Redbacklight

Description of Instruments

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DISPLAY

a) LCD

b) Backlightbutton

c) Speedselectbutton

d) Distanceselectbutton

e) Chronometerstartbutton

f) Springsnapformountingplate

g) Batterycover(fourscrews)



TRANSMITTER

h) 0.3mcable

i) Sensorforimpeller

j) Transmitterbody

k) Batterycap

IMPELLER

l) Mountingplate 

m) Fin

n) Threadedshaft

o) Threadedbase

p) Magnetizedimpeller

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2.DescriptionoftheDisplayScreen

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a) Automaticormanualchronometer,orcountdowntimer

b) Chronometerdisplay,hours:minutes’seconds”

c) Receivingtransmission

d) Speeddisplay

e) Speedincreaseordecrease

f) Unitsofmeasure(knots,milesperhour,kilometresperhour,ormeterspersecond

g) Lowbatteryindicator(fordisplay)

h) Triportotaldistance

i) Distancedisplay

j) Balanced,maximum,oraveragespeed

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3.Startingupthe

Instrument

Display

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Fromthefactory,theSPEEDWATCHisinalowpower

state,withthetime“12:00”flashing.Pressanybutton

toenternormalmode.

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TheSPEEDWATCHisnowinManualMode;itwillonly

receivedatafromthetransmitterwhenthe

CHRONObuttonispressedandtheimpelleris

rotating.ThedefaultspeedisKNOTS,whichcanbe

changedtomph,km/h,orm/s.

Impeller

TheSPEEDWATCHimpellerneedstobescrewedonto

eitherthewhitefinmount,thelargeblackfinor

rudderblackfinmount.Theimpellerismagnetized

andcreatesamagneticpulsewhenrotating.This

magneticpulseisreceivedbythetransmitterand

transmittedtothedisplay.Thedisplaycannotsense

theimpellerdirectly;thetransmittermustbeon.

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Transmitter

TheSPEEDWATCHTransmitterrequiresa9Vbattery

tooperate;thisisincludedinyoursystem.Toinstall

thebattery,gentlypullthecapexposingthebattery

compartment.Installthe9Vbatteryandreplacethe

batterycap.Besuretopressthecapbackonfullyto

formthewatertightseal.Failuretodothiscould

resultinthe9Vbatteryfailing.Theelectronicsinthe

SPEEDWATCHtransmitterarecompletelyfactory

sealed.Donotattempttoopenthecaseexposingthe

electronics,orfailurecanoccur.

Itisnotnecessarytoremovethebatteryexceptfor

longperiod(wi nterstorage)becausethepower

consumptionisverylowifnomagneticfieldis

received.

Redflashesappearsonthebottomsidewhenthe

transmitterreceivesthemagneticsignalfromthe

impeller. 

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4.Programmingthe

SPEEDWATCH

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Entertheprogrammingmodetosetthe:

Chronometer–manualorautomatic

Countdowntimer

Speedunit

Time

Balancedspeedduration

Calibrationofsensor

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Toentertheprogrammingmode,youmustbein

eitherMANUALchronometermodewiththetimer

stopped,orinautomaticandnotreadinganysignal

(thetimerwillbestopped).



PressandholdboththeSPEEDandCHRONObuttons

forthreesecondstoentertheprogrammingmode.

“chrono”and“man”(manual)or“auto”(automatic)

willflash.PresstheCHRONOorDISTANCEbuttonsto

changethesetting,andtheSPEEDbuttontoconfirm

settingandadvancetothenextitem.Pressandhold

theSPEEDandCHRONObuttonsforthreesecondsto

acceptallsettingsandreturntothenormaloperating

mode.

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CHRONOMETER–MANUALORAUTOMATIC

PresstheCHRONOorDISTANCEbuttonstoalternate

betweenmanualorautomaticchronometer.Pressthe

SPEEDbuttontoconfirmsettingandadvance.

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COUNTDOWNTIMER

PresstheCHRONOorDISTANCEbuttonstoselectthe

countdowntimer.Thiscanbesetto10,6,5,3,or1

minutes.PresstheSPEEDbuttontoconfirmsetting

andadvance. If the countdowntimer is changed, the

SPEEDWATCH will enter the countdown mode upon

exiting the programming mode.

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SPEEDUNIT

PresstheCHRONOorDISTANCEbuttonstoselectthe

speedunit.Thiscanbesettokm/h(kilometresper

hour),m/s(meterspersecond),knots,ormph(miles

perhour).PresstheSPEEDbuttontoconfirmsetting

andadvance.

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TIMESETTING

PresstheCHRONObuttontoadvancethetime,and

theDISTANCEbuttontomovethetimeback.Press

andholdthebuttontochangethetimefaster.Itwill

startminutebyminuteforthefirsttenminute

change,theneverytenminutesforthenexthour

change,andtheneveryhour.ThetimeisinAM/PM

mode.PresstheSPEEDbuttontoconfirmsettingand

advance.



BALANCEDSPEED

Thebalancedspeedsettingaveragestheinstantspeed

overtheselectedtimeperiodtoprovideabalanced

speedreading.Thiscanbesetfrom2secondsto60

seconds,withvaryingintervals(2,3,4,5,6,8,10,12,

15,20,30,or60seconds).PresstheCHRONObutton

toincreasethetime,andtheDISTANCEtodecrease

thetime.PresstheSPEEDbuttontoconfirmsetting

andadvance.



CALIBRATIONOFSPEEDSENSOR

TheSPEEDWATCHcanbeprogrammedtoaccepta

differentspeedimpeller,forexamplea“paddle‐

wheel”stylesensor.

ThecalibrationfortheSPEEDWATCHimpelleris40.0.

Theminimumvalueis10.0,themaximumvalueis

2000.Holdingthebuttonwillincreaseordecreasethis

faster.ForsensorsotherthantheSPEEDWATCH

sensor,pleasecontactJDCElectronicforan

approximatesettingyoushoulduse.PresstheSPEED

buttontoconfirmsettingandadvance.



TheprogrammingoftheSPEEDWATCHisnow

complete.PressandholdboththeSPEEDand

CHRONObuttonsforthreesecondstoconfirmall

settingsandenternormaloperatingmode.



5.BasicOperatingMode

General Use of Buttons

LIGHTButton:Turnsonthebacklightforfiveseconds

(whileinanymode)

SPEEDButton:Selectsthespeeddisplayedinlarge

digits:instant,balanced,maximum,ortripaverage

DISTANCEButton:Selectsthedistancedisplayed:trip

ortotal

CHRONOButton:Startsandstopsthechronometer

andspeedreading.Alsostartsandpausesthe

countdowntimer.



Measuring Speed and Distance

TheSPEEDWATCHmeasurestheactualspeedthrough

water,notspeedoverlandaswithaGPS.Thesmall

impellerismountedundertheboatorkayakand

generatesamagneticfieldwhenrotating.This

magneticfieldisreceivedbythetransmitterthrough

thehullwithnowires,upto30centimeter.The

transmittersendsoutalowfrequencyradiosignal

whichisreceivedupto5meterbythedisplay.To

properlyreadspeeddata,theimpellerand

transmittershouldbemountedproperly.Pleasesee

theINSTALLATIONsectionfordetailedinstructions.

Therearetwomodesformeasuringspeedthrough

thewater,MANUALorAUTOMATIC.InMANUAL

mode,thetimerisstartedandstoppedbypressing

theCHRONObutton.Speedisonlymeasuredand

registeredwhenthetimerisON.InAUTOMATIC

mode,thetimerstartswhenasignalisreceivedfrom

thetransmitter.

ToresettheTRIPdistanceandchronometer,pressthe

CHRONObuttoninmanualmodetopausethe

chronometer.ThenpressandholdtheDISTANCE

button.ToresettheTOTdistance,pressandholdthe

DISTANCE button.

Countdown Timer

TheSPEEDWATCHcanbesettoprovideacountdown

timerforthestartofraces. To enter the programming

mode, you must be in either MANUAL chronometer mode

withthe timer stopped, or in automatic and not reading

any signal (the timer will be stopped).Pressandholdboth

theSPEEDandCHRONObuttonsforthreesecondsto

entertheprogrammingmode.PresstheSPEEDbutton

toadvancetothetimersetting.PresstheCHRONOor

DISTANCEbuttonstoselectthecountdowntimer.This

canbesetto10,6,5,3,or1minutes.



PresstheSPEEDandCHRONObuttonsforthree

secondstoexittheprogrammingmode.Thetimeis

displayedatthetopoftheLCD,thecountdowntimer

isdisplayedinthemiddle.



PresstheCHRONObuttontostartthecountdown

timer.Allotherbuttonsaredisabled,exceptforthe

LIGHTbutton.PresstheCHRONObuttontopausethe

countdown.Thetimerwillcountdown,withasingle

beepateachminute.Atoneminuteleft,adouble

beepwillsoundeachtenseconds.Attenseconds,the

SPEEDWATCHwillbeepthreetimeseachseconduntil

0:00.At0:00thesignalwillsoundfortwofullseconds.

Whenthecountdowntimerreaches0:00,the

SPEEDWATCHwillenterthenormaloperatingmode,

measuringspeedanddistance.Thechronometeris



resettoMANUAL,andcanbepausedbypressingthe



CHRONObutton.Tocancelthecountdowntimer,



presstheCHRONObuttontopausethecountdown.



ThenpressandholdtheSPEEDandCHRONObuttons



forthreesecondstoentertheprogrammingmode.Do



notchangethetimersetting;exittheprogramming



modebypressingandholdingtheSPEEDandCHRONO



buttonsforthreeseconds.

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