Chapter 8 Viewing Voyager PSD Data

The PSD Processing dialog box is displayed

(Figure 8-2)and lists all segments contained in the PSD

.DAT file in the order in which they were acquired with associated Mirror Ratios and Max Stitch Masses.

Column header

8

Figure 8-2 PSD Processing Dialog Box

The Max Stitch Mass is equal to the Precursor Mass times the Mirror Ratio. This value reflects the maximum mass of the segment that will be included in the composite spectrum. The mass range included in the segment is approximately 15 percent higher than the Max Stitch Mass. Optimum focus and resolution is achieved for fragment ions close to this mass.

8-4 Applied Biosystems