Managing Files

1.6.2 Converting Data from

1

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.

Data Explorer™ Software User’s Guide

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