2.3 Calibration
Preparation:
Make sure the sensor is “Online”.
Calibration on PC software：
It is required to calibrate for the first time usage.
2.3.1 Accelerometer Calibration
Purpose:
The accelerometer calibration is used to remove the zero bias of the
accelerometer. Before calibration, there will be different degrees of bias error.
After calibration, the measurement will be accurate.
Methods:
1. Firstly keep the module horizontally stationary, then click “Acceleration
Calibration” in the “Config” of the software.
2. After 1 ~ 2 seconds, the three axial acceleration value of the module is
about 0, 0，1, the X and Y axis Angle is around 0 °. After calibration, the x-y
axis Angle is accurate.
Note: when putting the module horizontal, there is one G of gravitational
acceleration on the Z-axis.
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