System information

MX Calibration Kit
Vicon MX Hardware System Reference 12-9
the feet, first loosen the locking nut next to the metal frame and
then turn the screw left to lower the calibration object or right to
raise it. Then tighten the locking nuts to fix the feet in position.
• If you are using the Ergocal, turn each of the adjuster screws until
the bubbles in the two spirit levels are in the center. Once the
static calibration object is level, you can slide the attached covers
to conceal the spirit levels.
Next place the static calibration object either on top of the force plates
or flat on the floor in the center of the capture volume in the field of
view of at least three cameras. Position the left corner of the static
calibration object where you would like the volume origin to be and
in the orientation that you would like the horizontal x and y axes to
be (for details on the MX calibration wand, see Figure 12-1 on
page 12-2; for details on the Ergocal, see Figure 12-2 on page 12-4).
The calibration process will calculate the vertical z axis from the
positions of the x and y axes, as shown Figure 12-5.
Figure 12-5: Global axes orientation
Warning
If you are using Workstation, after the static stage finishes, you must remove
the calibration object from the capture volume before starting the dynamic
stage to ensure the capture volume is correctly calibrated.
MXhardware_Reference.book Page 9 Monday, April 30, 2007 1:56 PM