LSM9DS1 16G scale issue
Hello,
We have found a non-expected behavior of the IMU system LSM9DS1 when is set with an accelerometer scale = +-16g. To show our findings, it is presented below descriptions and diagrams of the tests.
Firstly, two different devices were tested to contrast one with a scale of +-8g and the other with +-16g. The devices are stationary with the Z-axis aligned with gravity. Hence, after multiplying by the range scale and dividing by the digital value, we should obtain values close to 1g in the z-Axis. However, as is shown below, one can observe that in the case of 16g, the values from the Z-axis are around 0,65.
To further test this behavior, the opposite test was performed. So, the IMU sensors were moved to reach the limit of acceleration. From this test, we noticed that even though, the gravity seemed to be shrunk in the case of the IMU sensor with the scale of 16g. The limit was still 16g.
Could somebody from the ST help us with this issue?
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Best regards,
Sergii Makovetskyi