Agilent Technologies E5500 Series Guide de l'utilisateur Page 79

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Preparing for Imaging 4
Agilent 5500 SPM User’s Guide 79
Inserting and Aligning the Detector
As mentioned earlier, the photodiode detector records changes in the
position of the laser spot as the cantilever passes over the sample
surface. As shown in Figure 54, the detector senses the lasers
movement between its four quadrants, reporting the AFM (vertical
deflection), LFM (lateral, or friction), and SUM signals.
Figure 54 Photodiode detector operation
To install the photodiode detector, insert it into the scanner until it stops
(Figure 55). Plug the detector cable into the Detector socket on the
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