The Full Spectrum data-collection mode can only be used with Spectrometers. In Full Spectrum mode Intensity, Absorbance, or Transmittance is measured as a function of wavelength. Select one of Intensity, Absorbance or Wavelength in the Spectrometer dialog.
You have the option to Store Latest Run Every n Samples. A non-zero entry here will cause Logger Pro to store a run as a complete data set, and then continue to collect additional spectra. In this way a temporal history of the spectrum can be studied. However, please note that there is no time-stamp associated with each spectrum. Also, note that it is easy to create a large amount of data this way, since each data set may contain thousands of wavelengths. To view a particular spectrum, choose Show Data Set or Hide Data Set from the Data menu.