Q&D Magnetometer Calibrations

Result of the QD calibration of the LSM9DS1 magnetometer using the 8 Gauss scale.

The calibration results:

8gcal.txt
A=  [ 1055, 1059, -774 ]
max=  [ 2787, 2318, 2211 ]
min=  [ -282, -2189, -1154 ]
avg=  [ 1252.5, 64.5, 528.5 ]
amp=  [ 1534.5, 2253.5, 1682.5 ]
Gain=  [ 1.09644835451, 0.74661637452, 1 ]
S=  [ 0.00013384379, 0.00009113969, 0 ]

Statistical results of using the calibrations

For the 8 Gauss range the use of the Gain term reduced the variance in the data.

R1 uses raw readings. R1= sqrt( X1^2 + Y1^2 +Z1^2)
R1 uses raw readings - offset
R2 uses (raw -offset) * gain
.