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Troubleshooting
Voyager
Biospectrometry
Workstation User’s Guide 8-13
8
Poor signal-to-noise ratio
or sensitivity
(continued on next page)
Laser intensity too
high
Decrease laser intensity to
threshold by using the slider
controls in the Manual
Laser/Sample Positioning
control page.
Laser intensity too
low
Increase laser intensity by
using the slider controls in the
Manual Laser/Sample
Positioning control page.
Sample
contaminated
To test, mix the sample with a
standard of known sensitivity.
If the standard no longer
exhibits the expected
sensitivity, a contaminant in
the sample is affecting
sensitivity. Clean up sample.
See Section 3.1.5, Sample
Cleanup.
Not averaging
enough spectra
Average more spectra:
Manual Control mode
Collect more spectra
before stopping
acquisition
Automatic Control
mode—Increase number
of spectra to acquire
Matrix peaks are
saturating the
detector
Turn on Low Mass Gate to
suppress matrix peaks.
Table 8-1 Spectrum Troubleshooting (Continued)
Symptom Possible Cause Action
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