The following table describes the shortcut menu commands in the Spectrum view (by right-clicking).

Parameter

Description

Reset Scaling

Resets the axes to the default intensity and mass ranges.

Copy to Clipboard

Copies a screen capture of the mass spectrum to the clipboard.

Pan

To use this tool, you must first zoom in on the spectrum. Then, you can select this tool to slide the spectrum back and forth along the x-axis by holding down the left mouse button and moving the mouse cursor.

Print

Sends a copy of the mass spectrum to the printer.

Show Absolutes

Changes the y-axis scale from percentages to ion flux (ions/s).

Display

  • Normalized: The y-axis scale of the mass spectrum normalizes so that the most intense peak equals 100.
  • Fixed: The y-axis scale of the mass spectrum does not change.
  • Creep: The y-axis scale of the mass spectrum automatically increases if the peak intensity increases, but does not decrease if the peak intensity decreases.


The following table defines the header information at the top of the real-time spectrum.

Header information

Description

# (scan number)

The scan count, which only resets to zero when you start data acquisition.

RT

The retention time (in minutes).

NL

The normalization level, which is a measure of the ion signal strength.

Scan setting

The detector type, polarity mode (+ or –), data type (profile or centroid), source type, scan type, and other settings.