Instruction Manual

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GNAV540UserManual
7430‐0808‐01Rev.B
Page59
Aftercompletingtherotation,datawillbe
displayedwiththecalibrationvalues.TheXand
Yoffsetvaluesindicatehowfarthemagnetic
Figure22MagnetometerAlignmentValues

fieldhasbeenshiftedduetohardironaffects
fromcomponentssurroundingtheunit.
Thesoftironratiowillalsobedisplayed,which
nit.
istheeffectofsoftironontheGNAV540u
Apply
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6. Thesavethecalibrationvalues,clickthe
button.
Thenewconfigurationsettingswillbesaved,but
theywillnotbeimplementeduntileitherasoftreset
(viasoftware—see
InteractiveCommandsonpage
68)orahardreset(recyclepoweroftheGNAV540
unit)takesplace.
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AligningExternalMagnetometer
NOTE: reanex almagnetometer,itBydefault,theGNAV540usestheinternalmagnetometer.Touseandconfigu tern
mustbeselectedundertheAdvancedconfigurationtab.RefertoAdvancedon .page56
NOTE:Twoconfigurationsmustbeappliedwhenusinganexternalmagnetometer:LevelingandRotational.
ConfiguringtheLevelingmustbeperformedbeforetheRotationalalignment.
Figure23OffsetAlignment
LevelingAlignment
Leveling(rollandpitch)alignmentisdatathat
mustbemanuallyentered:theoffsetofthe
magnetometerrelatedtotheaxesofthesystemin

whichitisinstalled.
1. Ensuretheunitisconfiguredtousethe
externalmagnetometer.Referto
Advancedon
page
56
ExternalMagLevelingAlignment
.
2. Under
,enter
theRollOffsetandPitchOffsetinthedata
fields,
andthenclicktheSetbutton.
NOTE:Thefeaturesofthesecondaryleveling
interfacearenotavailable.(Referto
Figure24.)
TosavethevaluesintheEEPROM,clicktheApply
button.RefertoFigure25onpage60.
Thenewconfigurationsettingswillbesavedand
immediatelyimplemented.
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