Ocean Optics OOIIrrad-C - Manual (Page 49)

Chapter 5
Calibration
Overview
During the calibration process, the following files are written to the disk:
• chX.cal – A calibration file that contains the relationship between counts read and actual energy
in .
Select Calibrate from the menu bar to calibrate your spectrometer for the following measurements:
• Absolute Irradiance
• Relative Irradiance
• Color
Note
Be aware that the range of the calibration lamp extends lower than the range of the
spectrometer (for example, the range of the LS-1-CAL Calibration Light Source is 300 –
1050 nm). Therefore, avoid measuring below the spectrometer range to improve the
quality of your results.
Calibrating Absolute Irradiance
Irradiance is the amount of light present on a particular area, such as the fiber’s cross-section at its tip, a
cosine corrector’s surface, or the integrating sphere’s surface (measures the total optical output of a light
source inserted into the integrating sphere).
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