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3
OMNICxi Software Operation
Acquire and Analyze Data
Thermo Scientific
DXRxi User Guide
141
View Search Results for a Generated Profile Analysis
To view search results for a generated profile analysis
1. Use the
button at the top of the Analysis window to select the Raman
libraries to be searched.
2. Select the profile
in the
If you are searching MCR analysis results, select an MCR component thumbnail in the
profiles pane.
Table 33.
MCR profile settings
Profile Type
Description
Expected
components
Specifies the number of components that will be reported after the MCR
analysis. Enter the number of different components you expect to find in
the sample plus one (up to 32 components total). For example, if you
think your sample has 4 significant components, specify 5 components
in the software. The last component will show any residual information
that is unaccounted for.
Tip
: MCR requires a large amount of computer processing power and
speed. Depending on its capability, your computer may not be able to
calculate more than four or five components. We recommend starting
with a small number of components and increasing the number in
increments of one.
Limit spectral
range (min,
max)
Refines the spectral range used for the MCR analysis (for example to
ignore a high intensity peak or region that is not of interest). Enter
minimum and maximum X-axis values or use the tools in the spectral
pane to mark the start and end of the region used for the analysis.
Tip
: To zoom the spectrum, use the mouse to draw a box around the
region, then click inside the box. Right-click the spectral pane for more
display options.
Correct baseline
Applies a 4th order polynomial baseline correction to each spectrum in
the chemical image before performing the MCR analysis. It can be useful
for correcting any effects on the baseline curvature caused by the sample
response. Fluorescence is a good example.
Tip
: You can also apply a configurable
to your sample
data as it is acquired instead of this pre-processing correction.
APPLY
Starts the MCR analysis. The length of time for the analysis depends on
the number of specified components and the number of spectra in the
chemical image.
Summary of Contents for DXR xi
Page 12: ...1 Introducing the DXRxi Raman Imaging System Trademarks 6 DXRxi User Guide Thermo Scientific...
Page 14: ...2 DXRxi Microscope Operation 8 DXRxi User Guide Thermo Scientific...
Page 64: ...Safety Information 58 DXRxi User Guide Thermo Scientific Microscope Safety Labels or...
Page 65: ...Safety Information Thermo Scientific DXRxi User Guide 59...
Page 66: ...Safety Information 60 DXRxi User Guide Thermo Scientific...
Page 67: ...Safety Information Thermo Scientific DXRxi User Guide 61...
Page 68: ...Safety Information 62 DXRxi User Guide Thermo Scientific...
Page 166: ...3 OMNICxi Software Operation Acquire and Analyze Data 160 DXRxi User Guide Thermo Scientific...