Vatech A9 (PHT-30CSS)
Technical manual
VDH-TeM-098
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3.4. CT sensor: Dark calibration
As a dark acquisition step, check the operation of the sensor and the dark level through the
acquired dark.
※
Dark standard value
Min
Max
Median value
700
2300
1. Run the C:\VCaptureSW\Acquisition\CBCT\WidePANO\VACAP.exe file.
2. Send [SPM_ARCT], [SPM_CSON], [SPM_FIPM_0001], [SPM_FISS_0001], [SPM_FISM_0001],
[SPM_COLM_00010] commands to the command window to set the CT sensor and collimator.
Command
Function
[SPM_ARCT]
CT mode
[SPM_CSON]
CT sensor power on
[SPM_FISS_0001]
Normal Mode : 4x4 binning & High gain
[SPM_FIPM_0001]
Sensor size setting
[SPM_FISM_0001]
Sensor clock (1:External, 0: Internal)
[SPM_COLM_0010]
1T Cu + AL filter location (4 Point)
If 1T Cu + Al Filter is not all covered, send the
[SPM_CBST_XXXX] command to adjust.
3. Click the
Dark
button to acquire an image.
4. Check if it is a normal dark image through the maximum and minimum standard of the median
value.
5. Check if it satisfies the Dark standard value, and if not, replace the sensor because it is
defective.
Dark acquisition
Command window
