48
Figure 60. Scanning preview in Y-direction
If lines are not horizontal correct the rotation of the calibration block press ‘Stop’ and ‘Start Y-
Direction’.
Finally press ‘Save’-button to accept calibration. When calibration is saved the Z-Compensation
calculation can be enabled to the recipe in advanced parameters section.
2.4 Scanning
This section describes how to make the first scan of a new sample.
and
Proceed as follows:
1.
Select
Load Recipe
from the footer.
2.
Select the recipe called
Recipe
.
3.
Save the recipe with a new name, using the “Save as” button.
4.
Use the X and Y sliders or the Motor Control window to move the sensor approximately over the sample.
5.
Adjust the LED pulse width and use the full Z-range.
LED Pulse Width
depends on the reflectivity of the sample. The possible range is from 0 to 5000 µs.
Exposure is controlled with the LED pulse width. The width is given in microseconds and based on the sample
surface reflectivity. Typical values are shown below. In general, shiny and mirror-like surfaces require a short
pulse width and low-gloss surfaces a high pulse width.
