Vernier Spectro Pro - Manual (Page 40)

Spectro Pro Reference
42 Spectro Pro
Spectro Pro uses a range of points to calculate derivatives, tangent line
slopes, and smoothed data. You can set the number of points used for
these functions. The first setting affects the derivative( ) functions used
in column definitions as well as the drawing of tangent lines. The
second setting affects only the smooth( ) functions used in column
definitions.
In either case, a smaller number of points will make the functions more
responsive to small changes in the data, but larger numbers will reduce
noise.
The Enable Automatic Curve Fit option is checked by default.
Unchecking it will disable the Automatic Curve Fit function from the
Analyze menu and the Toolbar. Users may wish to disable automatic
curve fits to force students to perform manual curve fits instead.
All settings in the Options dialog are stored with an experiment file.
Selecting Calibrate brings up a dialog box that displays calibration
instructions for the particular mode in which data is being collected.
Options
Calibrate