Edit MS Global Parameters (LC/MS)

In the Method Editor, set global MS method parameters that are used when you acquire data. The MS Global Parameters pane is the top pane in the Instrument Setup > SQ > Method section. It is visible when any of the Instrument Setup > SQ > Method sections are visible.

Select the Ion source, the Stop time, and more.

  1. If necessary, show the MS Global Parameters pane.

    1. Click Method.

      Ribbon_MethodLayout.jpg
    2. In the Acquisition Method window in the navigation pane, click Instrument Setup > SQ.

    3. In the navigation pane under Method, select any section.

  2. (optional) Select the Ion Source. The installed Ion Source is displayed next to the selection. You can edit and save a method with an ion source other than the installed source. However, you cannot download or run a method if the sources do not match. If you try to download or run the method, the Not Ready Text in the Instrument Status > SQ tab says "Ion source mismatch."

  3. Select or clear Time filter window (min). If selected, enter the peakwidth.

  4. Select the Stop time. Select either As pump/No limit or Limit (min).

  5. If you selected Limit (min), enter the time in minutes.

  6. Select the Tune file. If you select a Fast Scan tune file, then Fast scan is selected automatically.

See Also

Edit a method

Method > MS Global Parameters Pane