During Calibration process, a calibration square is used to define global coordinate axes as well as the ground plane for the capture volume. Each calibration square has different vertical offset value. When defining the ground plane, Motive will recognize the square and ask user whether to change the value to the matching offset.
For Motive 1.7 or higher, Right-Handed Coordinate System is used as the standard, across internal and exported formats and data streams. As a result, Motive 1.7 now interprets the L-Frame differently than previous releases:
Motive 1.6 and earlier
L-Frame long (marked Z) "leg" interpreted as -Z, L-Frame short (unlabeled) leg interpreted as +X
L-Frame long (marked Z) "leg" interpreted as +Z, L-Frame short (unlabeled) leg interpreted as -X
The simplest method to account for this change is to rotate the L-Frame 180° during calibration (rotating "around the Y axis"). If the L-Frame is not rotated during calibration, Motive will display inverted global coordinates when comparing the same data in Motive 1.7 and Motive 1.6 and earlier: