Sirona ORTHOPHOS SL 2D Service Manual page 174

7 Unit adjustment and calibration
7.1 General information on unit adjustment and calibration
2D adjustment/calibration
3D adjustment/calibration
174
7.1.2.2.3 Shifting direction of the exposed image area
The menus contain a pictographic representation of the expected
adjustment image to help you perform software-based adjustment and
calibration. The shifting direction indicated by the plus and minus signs
located below and next to the pictograph refers to shifting of the exposed
image section in the direction of the stationary auxiliary lines (see the
example).
Example:
In the example, the exposed image section is offset to the left by the value
Sx and upward by the value Sy. In order to shift the image field so that it
comes to lie inside the auxiliary lines, you must enter ...
● Sx (shift to the right) with a positive sign
● Sy (shift downward) with a negative sign
in the text boxes on the tab.
Generally speaking, the exposed image area must always be shifted
toward the auxiliary lines:
● Shift to the right or upward: Enter the value (measured offset from the
auxiliary line) with a positive sign.
● Shift to the left or downward: Enter the value (measured offset from
the auxiliary line) with a negative sign.
7.1.2.2.4 Automatic adjustment
During the automatic 2D adjustment via the calibration menu, default
values for adjustment are displayed in the menu's text boxes after every
exposure. Repeat automatic adjustment until the default values in the text
boxes are equal to "zero". (This means that adjustment has been
successful.)
If the values do not converge toward "zero" despite repeating the
adjustment procedure several times, calculate the adjustment values
manually by measuring the exposure with the toolbar measuring ruler and
overwrite the default values in the menu. This procedure is described in
the following sections.
During the automatic 3D adjustment via the calibration menu, whether the
adjustment was successful or must be repeated again is displayed in the
message window in plain text.
Sirona Dental Systems GmbH
Service Manual ORTHOPHOS SL
64 95 258 D3632
D3632.076.01.03.02 09.2016