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Calibration Troubleshooting
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Software User’s Guide 9-11
9
Calibration returns an
invalid number of matches
When creating a reference
mass list in Manual or
Automatic calibration, the
software allows you to add
multiple items with the
same m/z value to the
calibration list box if any
other attribute of the
reference compound is
different (for example,
charge state or name).
Each mass in the list is
considered during
calibration.
Do not include multiple
entries with the same m/z
value in the Calibration
Reference file. See
Section 5.3.3, Creating or
Modifying a
Calibration Reference File
(.REF).
.REF file created with
Windows Notepad not
listed when you select
Reference file
Reference file does not
include .REF extension
Some applications
automatically append a
.TXT extension to file
names.
To name the file with a
.REF extension, include
the file name and
extension in
double-quotes in the Save
File dialog box, for
example “CAL.REF”.
Table 9-6 Calibration Troubleshooting—Mariner and Voyager (Continued)
Symptom Possible Cause Action