Dell 3100 Spécifications Page 141

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Contact AFM
Basic Contact Mode AFM Operation
Rev. D Dimension 3100 Manual 121
8.1.5 Adjust Photodetector
1. Adjust the photodetector so that the red dot moves toward the center of the Dimension head
filter screen using the two photodetector adjustment knobs located on the side of the
Dimension head.
2. Verify that the red dot is centered and elliptical in shape in the Dimension head filter screen.
3. Set the Vertical Deflection to -2V.
8.1.6 Locate Tip
1. Select Stage > Locate Tip or click on the Locate Tip icon.
2. Center the tip end of the cantilever under the cross hairs using the two optics adjustment
knobs located left of the optical microscope objective.
3. Use the trackball with the bottom left button depressed to focus on the tip end of the
cantilever.
8.1.7 Focus Surface
1. Select Stage > Focus Surface or click on the Focus Surface icon.
2. Focus on the sample surface using the trackball with the bottom-left button depressed.
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