
Chapter 5 Optimizing Instrument Settings
5-48 PerSeptive Biosystems
5
Default Number of
Data Points/Bin
Size settings
The software uses the following default digitizer settings:
• Number of Data Points—100,000
• Bin size—Smallest possible Bin size to accommodate
the mass range selected.
Number of Data Points and Bin size are dependent
values, if you change one value the other changes. For
more information, see “Mass Range (Da)” on page 5-19.
Overriding
horizontal
digitizer settings
You can override the default digitizer settings:
1. In the Instrument Settings control page, click
Mode/Digitizer.
2. Click Linear or Reflector Digitizer, and select the
digitizer parameter to optimize:
• Number of Data Points—Allows you to select the
memory size available for sampling. Increasing
this value decreases the Bin size. Decreasing this
value increases the Bin size.
• Bin Size—Allows you to specify the Bin size
(nanoseconds). For information, see “Effects of
adjusting Bin size” on page 5-49.
3. Change the Bin size to improve resolution as needed:
NOTE: Setting the Bin size lower than the default calculated
by the system may result in a larger data file size.
Mode Digitizer Bin Size
Linear 1 nsec
NOTE: A Bin size setting below 1 nsec does
not typically improve observed mass
resolution in Linear mode
Reflector 0.5 or 1 nsec
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