Focus the spectrometer

  1. FocusEnsure that the spectrum contains adequate signal as well as some reasonably sharp features that the alignment routine can use to focus (e.g., zero-loss peak or a low energy core-loss edge)

  2. Press the Tune GIF button to automatically focus the spectrometer

  3. Select a EELS Focus option to open a new Tuning dialog box

  4. To manually focus, click (...) and adjust the Energy Loss and Dispersion in the Filter State window

Focus the spectrometer