Voyager DP-263-S Guida Utente Pagina 289

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Optimizing Instrument Settings Parameters
Voyager
Biospectrometry
Workstation User’s Guide 5-59
5
If the spectrum you obtain is not acceptable,
increase or decrease the laser again in 50 to
100-step increments or decrements and reacquire.
If you pass the optimum laser setting, increase or
decrease using a setting that is midway between
the previous two step increments or decrements.
Signal saturation
If the laser intensity is too high, the signal may be saturated
(Figure 5-16). A saturated peak can be determined by:
Figure 5-16 Signal Saturated at High Laser Intensity
Display
Signal is saturated if it
exceeds
Spectrum window 64,000 counts
Oscilloscope (in 1 V full
scale range )
5 screen-grid-line
divisions in the 200 mV
mode
10 screen-grid-line
divisions in the 100 mV
mode
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