Festo SBOC-M-R1B-H, Руководство пользователя

Страница: 64 / 88

4. Commissioning
4-14
Festo GDCS-SBOC-EN en 1602a
4.5.1 Setting the optics
In order to achieve good recordings, you must make the fol­
lowing settings dependent on the object/motif and the re­
spective recording conditions:
– Focus the object
– Set the aperture
– Set the exposure time, amplification and image quality
with the FCT software package.
A test image, e.g. a so-called Siemens star, is often used for
setting and checking the sharpness. For this purpose the
camera is aimed at the test picture and the test picture is
then focused.
Appendix A.3 shows a Siemens star which you can use as a
test picture.
The Siemens star is a circle with alternate white and black
segments. The segments run to the centre but do not overlap.
Cameras cannot reproduce optimally the centre of such a test
picture.
An unsharp range will be visible, the so-called grey ring. The
smaller the grey ring, the better the lens is focused.