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 an 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