Importing a Spectrum

This section describes how to import a spectrum from an external file.

To Import a Spectrum from a Text File:

  1. Click File > Import spectrum from text file....
  2. Select the text file that contains the spectrum.
    Note: Several spectra may be in the same file, as one column per spectrum. See File Formats for more information.
  3. In the Spectrum Import window:
    1. Select the Spectrum Type according to the content of the file you are importing (see Spectrum Calculation Details for more information about the spectrum type).
      Tip: If you don’t know the type of the spectrum you are importing, select Unknown.
    2. Specify which column contains the vector of frequencies.
    3. Select the columns to import, and for each of them:
      • Verify the Unit, and edit it if needed.
      • Select the dB scale option only if the unit of this column is logarithmic.

  4. Finalize the import by clicking Import data .
A new window containing the imported spectra is created.