Calibrations - Planmeca ProMax 3D Max with ProTouch Technical Manual

5 Panoramic and 3D calibrations
5.4.10 3D calibrations
5.4.10.1 3D beam check
172 Planmeca ProMax 3D Max
12. Draw a line from point (A) to point (B) on the platform.
The real rotating centre is in the middle of this line, between points (A)
and (B) i.e. (4) and (5) in the figure below. Mark the real rotating centre
on the platform as shown.
The real rotating centre must not be located more than ±1 mm from the
reference point (see shaded square in the figure below). If this is the
case, adjust the lights so that the beams cross at this point (refer to the
figure below).
1 Real rotating centre
2 Reference point
3 Real rotating centre
4 Point A
5 Point B
In case the new crossing point is not inside the ±1 mm limits from the
ball phantom x- line and y-line crossing point, readjust the patient
positioning mechanism, see sections "Adjusting alignment in x-direction"
on page 157 and "Adjusting alignment in y-direction" on page 163.
13. After the lights are correctly adjusted, remove the strips of masking tape.
14. Remove both transportation pins and reattach the shoulder arm upper
cover.
Check the 3d beam position by taking a beam check exposure. Refer to the
Planmeca Device Tool manual, publication number 10031558.
Technical manual