
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
Kommentare zu diesen Handbüchern