Voyager DP-263-S Betriebsanweisung Seite 427

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 612
  • Inhaltsverzeichnis
  • FEHLERBEHEBUNG
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 426
Acquiring PSD Data with Standard Instrument Settings (.BIC) Files
Voyager
Biospectrometry
Workstation User’s Guide 7-23
7
Size of segments
You can acquire segments of different sizes by varying the
Mirror Ratio setting. For example, you can set the first Mirror
Ratio to collect a 20 percent segment, then set the next Mirror
Ratio to collect a 10 percent segment. If you change the
default Decrement Ratio, fill-down subsequent existing rows,
and the Mirror Ratio values are automatically recalculated.
Fill-down is described in “Using the Fill Down function” on
page 7-30.
Default number of
segments
The standard instrument settings (.BIC) file provided,
Angiotensin_PSD.BIC, is set to acquire 10 segments with
the Mirror Ratios listed in “Default Mirror Ratio settings” on
page 7-22. These settings are adequate for many
applications.
You can add or delete segments, or change the Mirror Ratio
for a segment as needed.
Acquiring only
select segments
The PSD software allows complete flexibility in the way you
acquire and process PSD data. You are not required to
acquire a complete set of PSD segments. If you are interested
in specific fragment masses only, you can acquire only the
number of segments you are interested in by using Mirror
Ratio settings that focus the fragment ion masses of interest.
Hint: The best focusing conditions occur when the fragment
ion mass is equal to the Mirror Ratio multiplied by the
precursor ion mass (equal to the Max Stitch Mass).
When you type in a Mirror Ratio (described in Section 7.3.4,
Filling in the Segment List), observe the Max Stitch Mass
displayed. 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.)
Seitenansicht 426
1 2 ... 422 423 424 425 426 427 428 429 430 431 432 ... 611 612

Kommentare zu diesen Handbüchern

Keine Kommentare