Digitax F3 Plus - K Constant Calibration; Calculating the K-Constant (Autotest); Inserting the K-Constant Value

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12
“K”Constant
(CarTransmissionRatio)
The“KConstant”isthenumberofpulsesperKilometeremittedbyatransducerandreceivedbyataximeter.
KConstant=Pulses/Kilometer
Thepulsescanbeemittedbythecar’selectronictransduceror,ifthecarisnotprovideofit,bytheDigitax
mechanicalone.Thisconstantcanbe
knowedorbetestedonroad.
HowtofindouttheK‐Constantvalue(Autotest)
Followthisproceduretofindoutthecartansmissionratio(K‐constant).
Forarightprocedureitmustbedoneinaroadwithacarefullymarkeddistanceof1Kilometer(default).
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Aligncarefullythecar’sfrontwheelswiththetestdistance‘sstartline
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SelectForHireposition.
PressK2andK3buttonsatthesametime.
Thefaredisplayshows“Attest”forafewsecondsandthenthe
“ForHire‐Stopped‐Hired”signslightontogether.
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Now start driving thetest distance (1 kilometer) at 30 Km/Hour
maximum.
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Reachthefinishline,previously
marked,andstopthecar:
the extras display will show the number of pulses emitted during the
test‐distancerun.
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Keep note of this value. The aim of it is to calibrate the taximeter to
calculatetheK‐constant.
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PressOPbuttontoendtheprocedureandgobackto
ForHireposition.
Takeoutthetaximeterprogrammingcover
SelectForHireposition.
InserttheBlackProgrammingKeyinitsslot.
PressK2andK3buttonsatthesametime.
Thebigdisplayshows“Attest”forafewseconds.
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The“ForHire‐Stopped‐Hired”signslightontogether.
Thefare
displayshowstheprogrammedK‐Constantvalue.
TheextrasdisplayshowsthemeterstobecoveredfortheAutotest
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PressK2buttontoincreasethepulses/kmnumber.
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PressK1buttontodecreasethepulses/kmnumber.
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Referringtotheaboveexample,pressK1buttontilltoreach680value
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(pulsesfindedoutintheautotest)showedinthefaredisplay.
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PressOPbuttontoendtheprocedureandgobacktoForHireposition.
TakeouttheBlackProgrammingKeyfromthetaximeter.
Autotest StartingPoint
AutotestFinishingPoint
1KilometeratMax30Km
/
Hour.
Meters
HowtoinserttheK‐Constantvalue
FollowthisproceduretocalibratethetaximeterwithaknowK‐Constant value.