Voyager DP-263-S Guía de usuario Pagina 605

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Index
Voyager
Biospectrometry
Workstation User’s Guide Index-33
I
D
E
X
N
SET file, Sequence Control Panel
creating 6-67
defaults used if none specified 6-71
description 6-62
selecting 6-71
Shots/Spectrum
description 5-19
does not match number of times
laser fires 5-19
for maximum mass accuracy 6-6
impact on signal-to-noise 5-40
improving signal-to-noise ratio 5-79
incorrect number 8-19
maximum number 5-19, 5-79
maximum number, overriding with
manual accumulation 5-79
troubleshooting 8-19
Shutting down
computer 2-48
mass spectrometer 2-49
Side panel, Voyager-DE and
Voyager-DE PRO
mass spectrometer 2-8
Signal
flat 8-7, 8-9, H-20
intensity in PSD mode 7-38
offscale 5-59
saturated 5-59, 8-9, H-13
suppression 5-60
with high salt concentration 7-38
Signal intensity
see also Intensity, signal
and accurate mass
measurement 6-25
criteria used in automatic laser
intensity adjustment 6-41
Signal, saturated
causes signal suppression in other
mass regions 5-60
checking 6-16
decreasing laser intensity to
correct 5-59
number of counts 5-59, 6-16
Signal-to-noise ratio
and accurate mass
measurement 6-25
and laser threshold H-11
and resolution H-8
automatic spectrum
evaluation 6-41
calculating during acquisition 6-32
calculating for live data 6-32
criteria used in automatic laser
intensity adjustment 6-41,
6-42
filtering during acquisition 6-41,
6-42
high mass ions 6-5
impact of changing instrument
settings parameters 6-24
improving H-18
labels not displayed 6-33, 8-20
labels not displayed for all
peaks 6-33
mass range used to determine
signal 6-41
parameters affecting in Continuous
Extraction mode H-11
results 6-33
thin film matrices 6-5
troubleshooting 8-13, 8-14
Signal-to-noise ratio, optimizing
Accelerating Voltage 5-77
accumulating spectra 5-75
Guide Wire Voltage% 5-78
Low Mass Gate 5-79
overview 5-75
parameters affecting 5-76
Shots/Spectrum 5-40, 5-79
Signatec digitizer, see Digitizer
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