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

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This format is suitable for high resolution and gas phase spectra. This format is used by the Aldrich spectral library books and is very helpful for spectral interpretation. It is easier to see fine spectral details in this format than in other formats. Wavelength (µm) – In this format (see the following example) spectra are displayed in wavelength measured in micrometers (µm), and the default displayed spectral range for mid-IR data (4000 to 400 wavenumbers) is from 2.5 to 25 micrometers. Mid-IR spectra are generally hard to interpret when displayed in this format, because their peaks are displayed too close together. 170 Thermo Nicolet
Wavelength (nm) – In this format (see the example below) spectra are displayed in wavelength measured in nanometers (nm), and the default displayed spectral range for mid-IR data (4000 to 400 wavenumbers) is from 2500 to 25000 nanometers. Specifying how to stack spectra The options in the Stack Display box affect stacked spectra. Use Number Of Panes In Stack to specify the number of panes to display when you stack spectra using Stack Spectra in the View menu. Typically two panes are stacked for visually comparing spectra. This parameter is not available if Auto Stack Spectra is turned on. Turn on Auto Stack Spectra if you want the number of panes in a stack adjusted automatically to match the number of displayed (not hidden) spectra instead of using the number specified by Number Of Panes In Stack. This lets you see every displayed spectrum in the window without using the stack scroll bar. Keep in mind, however, that the panes become smaller as you add spectra to the window. Note You can specify how to stack spectra in newly created spectral windows by setting options in the Stack Display box in the Window options (available through Options in the Edit menu). See “Specifying how to stack spectra in new spectral windows” in the “Edit” chapter for details. ▲ See “Stacking or overlaying spectra” in this chapter and “Stacking spectra” in the “About the Display” chapter for more information on stacking spectra. OMNIC User’s <strong>Guide</strong> 171
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The information in this publication
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Peak area tool.....................
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Checking spectrometer performance a
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Process............................
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Selecting, editing or creating a re
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How to use this manual This manual
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• If you do not have the DS optio
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Note If you have the DS option, you
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Digital signature information in a
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There are several ways to enter the
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Note Some tutorials are available o
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Note If you are using Windows 2000
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Panes A pane is an area of the spec
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Displaying a list of spectrum title
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Displaying a different spectral reg
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Copying information to the Clipboar
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Note You can select all the display
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Next, hold down the Shift key and c
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Region tool Some OMNIC commands can
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You can position the annotation tex
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You can position the annotation by
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2. Click the Annotate button to the
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The corrected area is bordered by t
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2. Edit the label text if desired.
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Overlaying spectra lets you see sig
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When you hide a stacked spectrum, a
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If a pane containing a spectrum is
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46 Thermo Nicolet
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File Type Extension Comments Spectr
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The settings available in the Y Uni
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If Put Opened Spectrum In New Windo
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3. If the Save As dialog box appear
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2. Choose Save Group from the File
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2. Locate and select the desired fi
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Save a configuration This procedure
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A dialog box appears. 2. Type a use
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Note The Enable OMNIC Log-In comman
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Note If a spectrum has been pasted
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Delete files 1. Choose Delete Files
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When you cut a displayed stacked sp
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Pasting duplicate images of spectra
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Note The options you set using Opti
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File Type Initial Spectra Initial E
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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
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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
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When deciding whether to use this f
Page 130 and 131: Titling the experiment Bench featur
Page 132 and 133: The peak-to-peak intensity is the s
Page 134 and 135: • It helps prevent infrared energ
Page 136 and 137: Specifying the beamsplitter type If
Page 138 and 139: The parameter checks appear when yo
Page 140 and 141: The individual checks are described
Page 142 and 143: Fringes result when back reflection
Page 144 and 145: A beamsplitter, detector, source or
Page 146 and 147: Type the desired minimum peak-to-pe
Page 148 and 149: Setting Boxcar N-B* Weak N-B* Mediu
Page 150 and 151: As an example, for a standard DTGS
Page 152 and 153: If you have installed a Smart Acces
Page 154 and 155: • Install a 32-bit version of OMN
Page 156 and 157: • To save the settings in the cur
Page 158 and 159: The positive settings move your vie
Page 160 and 161: What happens during collection? The
Page 162 and 163: 3. Choose Collect Sample from the C
Page 164 and 165: Note To store the spectrum on the h
Page 166 and 167: Viewing the age of the background D
Page 168 and 169: If Preview Data Collection is turne
Page 170 and 171: If at any time the system condition
Page 172 and 173: Undo a display limit change Choose
Page 174 and 175: To specify this or do this... The n
Page 176 and 177: To remove the grid from a spectral
Page 178 and 179: Note You can display annotations ve
Page 182 and 183: Specifying the sampling information
Page 184 and 185: Stacked spectra Stacking spectra is
Page 186 and 187: Full Scale brings the highest data
Page 188 and 189: Match the Y-axis scale of a spectru
Page 190 and 191: Display spectra vertically offset 1
Page 192 and 193: Display spectra full scale automati
Page 194 and 195: Displaying and using a toolbar Use
Page 196 and 197: Converting spectra to absorbance Us
Page 198 and 199: The units are described in the next
Page 200 and 201: The photoacoustic value (PAS) at a
Page 202 and 203: Micrometers Select Micrometers to c
Page 204 and 205: 4. Choose OK. • If you selected K
Page 206 and 207: • To change the final format. You
Page 208 and 209: What is a baseline? A baseline cons
Page 210 and 211: Important Be careful not to introdu
Page 212 and 213: The X and Y values of the point app
Page 214 and 215: 8. When you are finished correcting
Page 216 and 217: Before searching an ATR spectrum ag
Page 218 and 219: • 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
Page 226 and 227: Subtracting a component or contamin
Page 228 and 229: 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
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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
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If you want to print the informatio
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When you are ready to start printin
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You can only add the spectrum to a
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3. If you want to reset the data co
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Follow these general steps to creat
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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
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Searching for text Click the Search
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Express dates on this tab in the fo
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5. To search for reports that conta
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Note When windows are tiled, they m
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atmospheric effects suppressing, 94
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status of, 148 time for, 115, 116,
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detector interface kit, 123 detecto
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finding peaks, 235 fingerprint regi
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special criteria for, 246 spectral
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OMNIC Atlµs default directory, 76
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Process options, 90 Protégé spect
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experiment, 114, 146 default direct
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detector, 127 filter for, 139 for c
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displaying, 14, 20, 39, 95 color fo
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text adding to report template, 297
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x X-axis, 14, 17 display limits, 17
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Thermonicolet Omnic Software User's Guide 6.1 (PDF) - Charles E ...

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