Why a maximum value of 550? I understand intuitively why there would be a minimum value.
We typically see less than 6% mag field interference, but always get nailed by the max mag field length. Values are typically 680 to 790.
The integrated compass/mag is on a long multicopter with more than 8" space to the battery and motors. Running a compass around the mag shows little to no interference.
Mag calibration (only the external enabled) usually brings up values like -120 -50 80 ish.
What is "Max mag field length" and why the max? If we exceed the max, what behaviors might that propagate?
Test: Compass = GOOD - mag_field interference within limits (4.20%)
Max mag field length (686.01) > recommended (550.00)