User`s guide

Chapter 6 Acquiring Mass Spectra
6-44 PerSeptive Biosystems
6
During
acquisition
During acquisition:
• Laser is adjusted, sample position is adjusted, and
Spectrum Acceptance Criteria are applied to each search
pattern position in a spectrum. For more information, see
“Spectrum Accumulation” on page 5-33, and
Section 6.6.5, Process that Occurs During Acquisition in
Automatic Mode.
• Each spectrum is saved or accumulated as determined
by the conditions selected in Spectrum Accumulation in
the Automatic Control dialog box. For more information,
see, Section 6.6.6, Process that Occurs
when Accumulating Spectra from Multiple Search Pattern
Positions.
• Information about the acquisition is displayed in the
Automated Control tab of the Output window.
6.6.4 Search Pattern Files
This section describes:
• Search pattern files
• Units in search pattern files
• Default search pattern file
• Spiral search pattern file
• Search pattern for custom plates
• Selecting an .SP file
• Creating a search pattern file
Search pattern
files
A search pattern file determines the path that the laser follows
when scanning the selected Active Position using Automatic
Control Mode. You specify the search pattern file to use in the
Automatic Control Settings of the Instrument Settings control
page. See Section 5.2.3, Automatic Control Dialog Box, for
more information.
You can create customized search pattern files or use the
DEFAULT.SP or SPIRAL.SP files provided (for 100-position
plates).