Agilent Technologies U1840A Medalist sj5000, Hardware Manual

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7-6 Agilent U1840A Medalist sj5000 Hardware Manual
7
Camera and Lighting Calibration
Auto-Scaling
The purpose of auto-scaling is to ensure an accurate
determination of pixel size for measurement and for scaling
inspection algorithms. Once set, camera scaling should not need
to be adjusted. If a different scaling is required raise or lower
the camera, re-focus, and then perform auto scaling.
1
Load a board in the sj5000.
2
Pick a fiducial on the board whose presence score is above
900. (Refer to the
Engineering Manual for details on fiducial
training.)
3
From the
Tools
menu click the
Camera
folder.
4
Click
Automatic
in the Scaling area.
The gantry will start moving in the X and Y directions and
locate the fiducial for each position it goes to. This allows the
determination of the physical pixel size of the system.
NOTE
Always ensure the camera is well focused before scaling.