Agilent Technologies U1840A Medalist sj5000, Руководство по оборудованию

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Camera and Lighting Calibration
7
Agilent U1840A Medalist sj5000 Hardware Manual 7-17
Lens Foreign Body Check
To check that the lens and camera are free from dirt, do the
following:
1
Place a gray card upside down (white side up) in the
conveyor, and jog the camera over it.
2
Set the aperture to F16.
3
If some dirt can be seen on the scre0en, jog the camera
slightly to the left or right.
• If the dirt is still in the same position on the screen, then
either the lens or the camera is dirty.
• If the dirt disappears when the camera is jogged, then the
dirt is on the white side of the gray card.
4
Use a lint-free cloth to clean the dirt from the lens or camera.
5
Set the aperture back to F5.6 when finished.