Thermonicolet Omnic Software User's Guide 6.1 (PDF) - Charles E ...

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Region tool Some OMNIC commands can be used to operate on a region of a spectrum rather than on the entire spectrum. For example, you can use Blank to delete a spectral region that contains unwanted absorptions. To select a spectral region for these commands, use the region tool before choosing the command. You can also use the tool to measure the uncorrected area under peaks. The uncorrected area is measured from zero absorbance instead of the baseline. (In a transmittance spectrum, the uncorrected area is measured from 100% transmittance.) By using the Annotate button after area measurements, you can annotate peaks with their areas and then print the spectrum with these annotations. Note Note You can use Options in the Edit menu to specify the text orientation, font and number of decimal places for area annotations. See “View options” in the “Edit” chapter for details. ▲ You can measure the corrected area under a peaks by using the peak area tool. ▲ Selecting a spectral region – Follow these steps: 1. Select the spectrum that contains the region. 2. If necessary use the view finder or selection tool to display the entire region. 3. Select the region tool. 4. Point to where you want the region to start and press and hold down the mouse button. 5. While holding down the mouse button, move the pointer to where you want the region to end. Then release the mouse button. As you move the pointer, two vertical lines appear at the limits of the region. The X-axis limits and width of the region are displayed in the readout above the palette. When you release the mouse button, the region between the vertical lines is shaded to indicate that it is selected (see the example below). 28 Thermo Nicolet
As long as this region remains selected (shaded), it will be used by the next operation you perform that operates on a selected region. If you open another spectrum or select one by using the up or down arrow keys on the keyboard, the same region will be selected in that spectrum. At the top of each vertical line is a triangular handle that you can drag to the left or right to change the region limit. You can use the Annotate button to label the region with its uncorrected area (see the next procedure). Measuring the uncorrected area of a peak – Follow these steps: 1. Select the spectral region (peak region) that you want included in the area measurement. See the preceding procedure for instructions. When you release the mouse button, the portion of the shaded region that is under the peak is used to calculate the area. You can drag the triangular handles to make the region larger or smaller. You can start over by selecting a different region before clicking the Annotate button in the next step. (After you click the Annotate button, you will need to delete the annotation if you want to start over.) 2. Click the Annotate button to the right of the title box. Note The Annotate button is available only if Annotation is turned on in the Display Setup dialog box. ▲ The uncorrected area measurement appears as an annotation near the peak. OMNIC User’s <strong>Guide</strong> 29
Page 2 and 3: The information in this publication
Page 4 and 5: Peak area tool.....................
Page 6 and 7: Checking spectrometer performance a
Page 8 and 9: Process............................
Page 10 and 11: Selecting, editing or creating a re
Page 12 and 13: How to use this manual This manual
Page 14 and 15: • If you do not have the DS optio
Page 16 and 17: Note If you have the DS option, you
Page 18 and 19: Digital signature information in a
Page 20 and 21: There are several ways to enter the
Page 22 and 23: Note Some tutorials are available o
Page 24 and 25: Note If you are using Windows 2000
Page 26 and 27: Panes A pane is an area of the spec
Page 28 and 29: Displaying a list of spectrum title
Page 30 and 31: Displaying a different spectral reg
Page 32 and 33: Copying information to the Clipboar
Page 34 and 35: Note You can select all the display
Page 36 and 37: Next, hold down the Shift key and c
Page 40 and 41: You can position the annotation tex
Page 42 and 43: You can position the annotation by
Page 44 and 45: 2. Click the Annotate button to the
Page 46 and 47: The corrected area is bordered by t
Page 48 and 49: 2. Edit the label text if desired.
Page 50 and 51: Overlaying spectra lets you see sig
Page 52 and 53: When you hide a stacked spectrum, a
Page 54 and 55: If a pane containing a spectrum is
Page 56 and 57: 46 Thermo Nicolet
Page 58 and 59: File Type Extension Comments Spectr
Page 60 and 61: The settings available in the Y Uni
Page 62 and 63: If Put Opened Spectrum In New Windo
Page 64 and 65: 3. If the Save As dialog box appear
Page 66 and 67: 2. Choose Save Group from the File
Page 68 and 69: 2. Locate and select the desired fi
Page 70 and 71: Save a configuration This procedure
Page 72 and 73: A dialog box appears. 2. Type a use
Page 74 and 75: Note The Enable OMNIC Log-In comman
Page 76 and 77: Note If a spectrum has been pasted
Page 78 and 79: Delete files 1. Choose Delete Files
Page 80 and 81: When you cut a displayed stacked sp
Page 82 and 83: Pasting duplicate images of spectra
Page 84 and 85: Note The options you set using Opti
Page 86 and 87: File Type Initial Spectra Initial E
Page 88 and 89:
Normalize the spectra of standards
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In the upper-left corner of the dia
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Type Annotation Axis Labels Axis Nu
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Specifying how to print axes The op
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Text Type Annotation Axis Labels Ax
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Note If you have turned off Prompt
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Setting Smart Purge The Smart Purge
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Specifying how to list peaks found
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4. Collect a sample spectrum with n
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To specify or do this... The X-axis
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Turn on Display All Annotation if y
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Item Company Name Spectrum Title Da
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Preventing the overwriting of files
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State Enabled Disabled Hidden Descr
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6. If you disabled or hid the Save
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5. Specify the size of the toolbar
Page 120 and 121:
Note You can create an image for a
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The experiment you select also sets
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Note The experiment you select also
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Note If you are studying samples th
Page 128 and 129:
When deciding whether to use this f
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Titling the experiment Bench featur
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The peak-to-peak intensity is the s
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• It helps prevent infrared energ
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Specifying the beamsplitter type If
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The parameter checks appear when yo
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The individual checks are described
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Fringes result when back reflection
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A beamsplitter, detector, source or
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Type the desired minimum peak-to-pe
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Setting Boxcar N-B* Weak N-B* Mediu
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As an example, for a standard DTGS
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If you have installed a Smart Acces
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• Install a 32-bit version of OMN
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• To save the settings in the cur
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The positive settings move your vie
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What happens during collection? The
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3. Choose Collect Sample from the C
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Note To store the spectrum on the h
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Viewing the age of the background D
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If Preview Data Collection is turne
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If at any time the system condition
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Undo a display limit change Choose
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To specify this or do this... The n
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To remove the grid from a spectral
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Note You can display annotations ve
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This format is suitable for high re
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Specifying the sampling information
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Stacked spectra Stacking spectra is
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Full Scale brings the highest data
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Match the Y-axis scale of a spectru
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Display spectra vertically offset 1
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Display spectra full scale automati
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Displaying and using a toolbar Use
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Converting spectra to absorbance Us
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The units are described in the next
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The photoacoustic value (PAS) at a
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Micrometers Select Micrometers to c
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4. Choose OK. • If you selected K
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• To change the final format. You
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What is a baseline? A baseline cons
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Important Be careful not to introdu
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The X and Y values of the point app
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8. When you are finished correcting
Page 216 and 217:
Before searching an ATR spectrum ag
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• A spectrum includes the region
Page 220 and 221:
Replacing a spectral region with a
Page 222 and 223:
Subtracting spectra Use Subtract in
Page 224 and 225:
2. Choose Subtract from the Process
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Subtracting a component or contamin
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Note If negative peaks appear in th
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3. Select the desired number of smo
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Converting spectra to their first o
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Multiplying a spectrum by a number
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Symbol Meaning Examples / Divide. A
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• To change the factor using the
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Here is the normalized spectrum: In
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Normalize the scale of spectra 1. S
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Example libraries The following sec
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Click the Print button in the Find
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6. To display or remove the Y-axis
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3. Choose Average from the Process
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Range of Y values versus X value Pe
Page 254 and 255:
4. If you are not using the search
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Using extended search The Extended
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When you perform the search, the ex
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All the QC libraries and library gr
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Set up a spectral search (The proce
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7. Specify the number of found libr
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5. Specify the spectral regions to
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Search a spectral library 1. Use Li
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If you did not use the search exper
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To print the search expert’s comm
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Color-coded titles of the spectrum
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To print the spectrum and functiona
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You can choose Overlay Spectra from
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Working with libraries Click the Li
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Once a library is created, you can
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3. Click the name of the user libra
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A copy of the spectrum is placed in
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• If you are adding more than one
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3. Click the name of the library. T
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9. Choose Search. The search result
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The kinds of information displayed
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2. Click the Create/Edit Structures
Page 298 and 299:
If you want to print the informatio
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When you are ready to start printin
Page 302 and 303:
You can only add the spectrum to a
Page 304 and 305:
3. If you want to reset the data co
Page 306 and 307:
Follow these general steps to creat
Page 308 and 309:
Type Spectrum Comments Spectrum Cus
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3. Specify the item type by selecti
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5. Choose Preview/Print Report from
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4. If the item type is Spectral Win
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The page number of the currently di
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7. Close the Report Template window
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Adding a report to a notebook Use A
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To view a report notebook, use View
Page 324 and 325:
Searching for text Click the Search
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Express dates on this tab in the fo
Page 328 and 329:
5. To search for reports that conta
Page 330 and 331:
Note When windows are tiled, they m
Page 332 and 333:
atmospheric effects suppressing, 94
Page 334 and 335:
status of, 148 time for, 115, 116,
Page 336 and 337:
detector interface kit, 123 detecto
Page 338 and 339:
finding peaks, 235 fingerprint regi
Page 340 and 341:
special criteria for, 246 spectral
Page 342 and 343:
OMNIC Atlµs default directory, 76
Page 344 and 345:
Process options, 90 Protégé spect
Page 346 and 347:
experiment, 114, 146 default direct
Page 348 and 349:
detector, 127 filter for, 139 for c
Page 350 and 351:
displaying, 14, 20, 39, 95 color fo
Page 352 and 353:
text adding to report template, 297
Page 354:
x X-axis, 14, 17 display limits, 17
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