Agilent Technologies U1840A Medalist sj5000 Hardware Manual page 99

Lens Foreign Body Check
Agilent U1840A Medalist sj5000 Hardware Manual
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.
Camera and Lighting Calibration
7
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