Ocean Optics SpectraSuite - Manual (Page 107)

7: Processing Menu Functions
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3. If more than one Absolute Irradiance graph is open, select the desired spectrometer by
highlighting it under Source.
4. Select the Observer from the drop-down list.
5. Use the default Steradians (1.0) or enter your own value. (If the steradians value is 1, then
candela = lumens).
The right section of the dialog box displays Observer Information in Detail or Graph form (Graph
form is shown below, Detail form is shown on the previous page).