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Software User’s Guide 1-33
1
1.6.2 Converting Data from
Profile to Centroid (Mariner Data Only)
Overview You can convert an entire data file from profile to centroid
format. Centroid format files are smaller than profile format
files.
NOTE: Profile data is not automatically deleted when you
convert to centroid data. You can delete the profile data file
using Windows NT Explorer.
Before you begin If the file to convert is in .SPC format, confirm that the .SPC
and .CGM files are located in the same directory. For
information see “Before you begin” on page 1-31. If the
.SPC and .CGM files are not in the same directory, when
you open the.SPC file, a “Failed to open chromatogram
data” message is displayed.
Converting to
centroid
To convert from profile to centroid format:
1. Open or activate the .DAT or .SPC file to convert.
2. Select Convert from the File menu, then select Centroid.
The Save As dialog box is displayed. The software
appends a “-CT” suffix to the file name. This is the
default file name. You can enter a new file name for the
centroid file.
3. Click Save.
NOTE: The m/z range in a data file that is converted
from profile to centroid is determined by the peak
detection range set in Data Explorer, not the m/z range
in the original data file. For more information, see
Section 3.2, Peak Detection.