Xg系列调整手册.pdf - 第28页
3 Basic adjustments 3- 6 1. Camer a parameter adjustments n NOTE When aligning the camera with the light adjuster plate, it will be easier to view the image on the vision monitor by setting the lighting levels to a plus …
3
Basic adjustments
3-5
1. Camera parameter adjustments
3
Move the moving camera to a position above the light adjuster plate.
1.Cancel emergency stop and press the [Axis] button on the [Unit]-[Conveyor] tab to
open the Move Axis window.
2.Use the arrow buttons to move the moving camera to a position above the light
adjuster plate, so that the light gray area of the light adjuster plate is displayed over
the entire vision monitor in the Move Axis window.
Move Axis window
Vision monitor
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Aligning the camera with the light adjuster plate
[Light] button
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3
Basic adjustments
3-6
1. Camera parameter adjustments
n
NOTE
When aligning the camera with the light adjuster plate, it will be easier to view the image on the vision monitor
by setting the lighting levels to a plus (+) value in the Mark Light window that opens with the [Light] button.
Mark Light window
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4
Start the adjustment utility.
After closing the Move Axis window, press the [Utilities] button to start the adjustment
utility. The adjustment utility menu window appears.
Adjustment utility menu window
[Moving Camera] button
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NOTE
For how to start the adjustment utility, see section 2.4 in Chapter 2.
3
Basic adjustments
3-7
1. Camera parameter adjustments
5
Press the [Moving Camera] button.
The moving camera adjustment dialog box appears as shown below.
Moving camera adjustment dialog box
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NOTE
Check that the adjustment conditions in the moving camera adjustment dialog box are set as follows.
Light : All
Black : 0 or blank (The black offset value will appear after measuring the black level in the next step.)
Speed : 60
6
Measure the moving camera black level.
Place a black plate (black case floppy disk, etc.) up against the bottom of the moving
camera lighting unit so that no ambient light penetrates into the lighting unit, and
then press the [Black Level Measurement] button.
[Black Level Measurement] button
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NOTE
A small amount of dark current is generated at the output of the CCD camera even if no light enters the CCD
(pitch black conditions). A black level measured here is used as an "offset value" for the dark current. This black
level may differ from camera to camera even between the machines of the same model.
After black level was measured
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CAUTION
Black levels are typically 8±5. If the measured black level is greatly outside the typical range,
the camera might be defective. Please contact our sales office or sales representative.