HELMHOLTZ COIL INSTALLATION AND CALIBRATION
Figure 9: Position 1 - X Axis Rotation
Record the new values Yx’ and Zx’. Calculate
Yx and Zx
target as (Yx’
-Yx)/2 and (Zx
’
-Zx)/2.
With these values calculated, using the Y->X and Z->X
potentiometers, adjust the potentiometers to the target value.
Once achieved, you can return the sensor to position 0 and check
that the value obtained has the same absolute value as the target
value, but is opposite in sign. If not, you can repeat the process to
reduce the error.
Figure 10: Y and Z Errors due to X Potentiometers Adjustment
o
Y axis.