Ocean Optics LIBS2500plus - Manual (Page 36)

3: Operation
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3. Click the Add Sample button. The Scan button now changes to a Sample button.
4. Set the number of averages you want to use, then click the Save Sample button.
5. Enter a library name for the saved sample.
6. Click the Correlate button. You should get a 1.
7. Click the Scan button. You should get a number very close to 1.
8. Save the new library using the Correlation menu.