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Figure 4 - Ellipsoidal Fit 

The ellipsoid fit captures many of the points that were not on the surface of the spherical fit.

  

 

 

 

Figure 5 - Corrected Fit 

The green sphere shows what the calibrated data should look like.  

 
 

Summary of Contents for 3DM-GX3 Series

Page 1: ...ts and bolts Often these sources are hard to avoid or are hidden and so a field calibration of the magnetometer after final installation is highly recommended This can be accomplished using MicroStrai...

Page 2: ...appear on the display in 3D c Click Stop Collecting d Click Spherical Fit and or Ellipsoid Fit to show the calculated calibration result e Click Corrected Fit to show how the corrected data will look...

Page 3: ...resenting the center of the data sphere is offset from the circle which represents the center of the sensor Normally these should be superimposed Figure 3 Spherical Fit The sphere fits pretty well but...

Page 4: ...ure 4 Ellipsoidal Fit The ellipsoid fit captures many of the points that were not on the surface of the spherical fit Figure 5 Corrected Fit The green sphere shows what the calibrated data should look...

Page 5: ...en points represent data taken after the calibration is written to the device Notice the values in the Device Iron Cal Matrix and Offset Figure 7 Live Data and Corrected Fit This shows how the correct...

Page 6: ...f your application Mounting changes or changes in surroundings may make a difference in the magnetometer output and by using this application you can see the magnetic effects and correct for them as n...

Page 7: ...use permanent damage to its components Many GPS antennas have a magnetic base the antenna we provide does not If you substitute a GPS antenna and its base is magnetic please keep it away from the 3DM...

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