AirGuide 2025 - Page 9

AGR Installation and Operation Guide
nautic Laugic www.nauticlaugic.com Page 9
Addendum:RegistrationTestandFine-TuneCalibration
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1. AttachedtheBROWNandBLUEWIREStoaswitched+12VDCsource(Battery,powersupply.)Connectthe
BLACKWIREtothenegative(common)sideofthepowersource...DON'TENERGIZEJUSTYET.
2. InsertJumpersatbothMOandM1...thiswillsettheMODEtoTEST:CALPOINTS.
3. Power-upandwaitfortheGPStoSatelliteSync;(thebacklightswillstopblinking).
4. ObservetheNeedlemoveandrestateachtargethashmark(multiplesof5),between10and50MPH.This
testrepeatsindefinitely.(Thestartinghashmarkisarbitrary,andvariesbytheGPS'sabilitytosync.)
ProperNeedleregistration>>theneedlelandswithintheenvelopeofeachtargethashmark.Attaining
aperfectregistrationisunlikely,soapplya'best-fit'mindset.
Endthetestbyremovingthepower.RemovealltheJumpers.
5. ShouldtheNeedleconsistentlyovershoot(gopast)eachhashmark,redoAssemblystep8(reapplyneedle).
6. ShouldtheNeedleconsistentlyfallshortofeachhashmark,thenproceedwiththefollowing FineTune: 
a. InsertonlytheMOjumper...thiswillsetthemodeto FINECALIBRATION .
b. ApplyPower,andobservetheNeedleslowlyrotateupwardfromthefullCCW(stop)position.
c. ImmediatelyremovepowerwhentheNeedleiscenteredonthe5MPHhashmark.
d. GotoStep2,andretest.
e. DissatisfiedwiththeFine-Tuneresult;StartoverbySettingtheDialbacktoDefaults(followthe
procedureintheyellowbox),thenbeginagainatStep6a.