EBS Active Track Basic+ Operation & Maintenance Manual page 46

Note:
It should be kept in mind that almost any change in location, according to the
laws of physics, is a resultant of many forces. In most cases the rotation is not ideally
parallel to the axis of gravitational field going exactly through the middle of the small
sensor placed asymmetrically in the device. Consequently, it can be assumed that
the device can detect motion (or lack thereof) of any type.
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