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D3352.076.01.13.02
07.2008
4.3 Adjusting the panoramic X-ray unit
Tabs 4
Coarse or precision adjustment?
In most cases, the diaphragm can be adjusted using precision adjustment
from the start (see step 5 onward). Only in exceptional cases, e.g. if the
exposed image area is completely outside the image field
C
in an image
acquired with
PRECISION
ADJUSTMENT
setting, is it necessary to perform a
coarse adjustment prior to precision adjustment
D
. To do this, deactivate the
PRECISION
ADJUSTMENT
check box (see page 4-3) and then perform a
coarse adjustment proceeding in the same way as for precision adjustment.
The only difference between coarse
and precision adjustment is the size of
the image area considered. Furthermore, there are fewer auxiliary lines in the
coarse adjustment mode.
X-ray image with unadjusted pan diaphragm:
Alternatively with precision adjustment setting (C) and coarse adjustment setting (D)
On the X-ray image with coarse adjustment D, the exposed area is just barely
visible at the right margin of the image field. Even in this extreme case, an
adjustment would still be possible.
NOTE
i
With SIDEXIS SW V01.45 and higher, a message window indicates whether a
coarse adjustment is required on completion of the precision exposure.
NOTE
i
When the
diaphragm is correctly adjust-
ed
, a course adjustment does not produce
a meaningful image, since no surrounding
border can be seen in this case (similar to
image C).
C
D
Summary of Contents for ORTHOPHOS XG 3 DS
Page 4: ......
Page 9: ...ORTHOPHOS XG 1General information...
Page 12: ...59 38 399 D3352 1 4 D3352 076 01 13 02 07 2008 Tab1...
Page 59: ...ORTHOPHOS XG 2 Messages...
Page 124: ...59 38 399 D3352 2 66 D3352 076 01 13 02 07 2008 2 6 List of available service routines Tab 2...
Page 125: ...ORTHOPHOS XG 3 Troubleshooting...
Page 153: ...ORTHOPHOS XG 4 Adjustment...
Page 269: ...ORTHOPHOS XG 5 Service routines...
Page 433: ...ORTHOPHOS XG 6 Repair...
Page 436: ...59 38 399 D3352 6 4 D3352 076 01 13 02 07 2008 Tab6...
Page 530: ...59 38 399 D3352 6 98 D3352 076 01 13 02 07 2008 6 21 Replacing cables Tabs 6...
Page 531: ...ORTHOPHOS XG 7 Maintenance...
Page 577: ...b 59 38 399 D3352 D3352 076 01 13 02 07 2008...