
Chapter 7 PSD Analysis
7-32 PerSeptive Biosystems
7
7.3.5 Acquiring and Saving PSD Segments
This section includes:
•Overview
• Acquiring PSD segments
• Selecting and acquiring a segment
• During acquisition
• Changing settings
• Accumulating or saving the segment
• Selecting and acquiring remaining segments
• Reacquring a segment
• Stopping the experiment
Overview
When you start acquiring in PSD mode, the software
automatically opens a PSD experiment. When a PSD
experiment is open:
• You cannot change instrument settings, to ensure that all
PSD segments are acquired under the same conditions
• All spectra that you save are placed in one .DAT file (no
.DAT file is created until you save a segment)
When you save the first PSD segment, the software creates a
PSD .DAT file. During a PSD acquisition, the PSD .DAT file
remains open and you can acquire multiple segment traces,
accumulate or discard traces, and save traces. Each time you
save a trace, it is appended to the currently open PSD .DAT
file. At the end of the acquisition, you stop the experiment,
which closes the PSD .DAT file and makes it available for
viewing in the Data Explorer software.
NOTE: In the Data Explorer software, you cannot view the
PSD .DAT file you are currently acquiring until you stop the
experiment. The PSD .DAT file is open and not available for
viewing while the experiment is running.
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