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Chapter 3 SCT 320 Operation 33
9. Click on the peak you will be monitoring for the alignment. This will display the data
cursor, which you can position at the top of the peak. Since the data cursor spans the
ROIs (graphs), you can use the data cursor as your vertical reference.
10. Slowly rotate the camera until the peaks align in all of the ROIs.
Alternatively, you can acquire an image, display the large data cursor, and compare the
vertical bar to the line shape on the screen. Rotate the detector until the line shape on the
screen is parallel with the vertical bar.
11. After completing the rotational alignment, click on the Stop button.
12. Re-tighten the four mounting plate screws.
13. Using a 9/64” hex wrench, remove the cover from the Micrometer Compartment.
14. Using a 3/32” hex wrench, loosen the micrometer locking set screw (see Figure 2-11).
15. Click on Run, and while continuously acquiring data, adjust the micrometer until you
maximize the intensity level and minimize the FWHM of a selected peak or peaks. Note
that the Peak Find function (for the graph selected by the cursor) is automatically turned
on to help you identify peaks and view FWHM widths.
Figure 3-4. Alignment Helper: Before and After Rotational Alignment
16. Tighten down the locking set screw.
17. Place the Micrometer Cover on the spectrograph. Replace and tighten all of the cover
screws.
18. Stop acquisition.