Reason:

(1) Test conditions are not within the system rating.

(2) Mounting condition of the EUT.

(3) Sensor or low noise cable is faulty.

(4) Error in Sensor setting.

Solution:

(1) Check the test conditions. The upper limit value of acceleration varies depending on the mass of the EUT.

(2) Check that the EUT is not installed with extreme eccentricity.

(3) Replace the Sensor or low-noise cable.

(4) Check the Sensor setting.