Hitachi F 2500 Manual
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6 - 5 6.3 Scale Change The X and Y-axis scales of data can be changed. Click the (properties) button and select the Scale tab. Or right-click on the spectrum and select “Scale change.” Fig. 6-4 Scale Tab Enter values in the Maximum and Minimum columns for the X and Y axes. The initial values are those that have been saved. The above window contains the following setting items. (1) X Axis Enter minimum and maximum values for the X axis. (2) Y Axis...
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6 - 6 6.4 Change of Graph Axis The horizontal axis of a graph is changeable on a spectrum. Click the (properties) button and select the Scale tab. Fig. 6-5 Scale Tab (1) X Axis mode X-axis is indicated in either unit below. (a) nm Indicated in wavelength (nm). (b) Kcm-1 Indicated in wavenumber (Kcm-1, K = 1000). x・λ = 10000 (x: Kcm-1, λ: nm) 6.4 Change of Graph Axis
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6 - 7 6.5 Change of Spectral Line The line and color of a spectrum can be changed. Select the Lines/Points tab of Spectrum Properties. Upon clicking this tab, the window below appears. Fig. 6-6 Lines/Points Tab The following setting items are contained in this window. (1) Graph Select a spectrum for setting lines/points. (2) Display mode Data can be indicated in the following modes. • Lines • Points • Lines & Points (3) Line pattern...
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6 - 8 (5) Line color Use of the Color window enables you to change the color of spectral lines or points. There are 48 basic colors. By clicking the Define Custom Colors button, a smaller window is added on the right side of the Color window as shown in Fig. 6-7. And by clicking Define Custom Colors again, 16 colors are added. These colors are usable or the spectral lines and points. For defining the colors, entries can be made for Hue, Sat (saturation) and Lum (luminance),...
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6 - 9 6.6 Detection of Spectral Peaks The spectral peaks and valleys are detectable automatically. Select the Find Peaks command from the Data menu or click button, and a window as in Fig. 6-8 appears. Set Integration method, Threshold and Sensitivity. Fig. 6-8 (1) Integration method The following three methods are available and any one may be selected for the peak wavelength. But the area calculation result indicated in the peak table will vary with...
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6 - 10 6.7 Indication of Peak Wavelength on Spectrum Select the Properties (O) command from the Edit (E) menu or click the (properties) button on the Processing toolbar. The window in Fig. 6-9 will open. Fig. 6-9 Display Tab In the Comments under this tab, the following settings can be made. (1) None Only a spectrum is displayed. (2) Peak Number Peak No. is indicated on a spectrum. This number is the one indicated in the peak table. (3) Peak...
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6 - 11 (5) Valley wavelength Valley wavelength is indicated on a spectrum. This wavelength is the one indicated in the peak table. It can be printed. (6) Peak and Valley Number Peak and valley Nos. are indicated on a spectrum. These numbers are the ones indicated in the peak table. (7) Peak and valley wavelength Peak and valley wavelengths are indicated on a spectrum. These wavelengths are the ones indicated in the peak table. They can be printed....
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6 - 12 6.8 Smoothing of Spectrum Select the Smooth (S) command from the Data (D) menu or click the button. The window in Fig. 6-11 will open. Fig. 6-11 Set the following parameters on this window. (1) Function type Select a smoothing method from the following three. • Savitsky-Golay • Mean • Median (2) Smoothing order Set a smoothing order. Input range: 2 to 4 (3) Number of points Set the number of points to be used in calculation....
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6 - 13 6.9 Derivative Operation on Spectrum Select the Derivative (D) command from the Data (D) menu or click the button. The window in Fig. 6-12 will open. Fig. 6-12 (1) Derivative order Set a derivative order. Input range: 1 to 4 (2) Smoothing order Set a smoothing order. Input range: 2 to 4 (3) Number of points Set the number of points to be used in calculation. Input range: 5 to 101, Initial value: 15 (4) Overlay derivative...
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6 - 14 6.10 Overlaid Display of Spectra This function is convenient for comparison of two or more spectra. There are 3 methods selectable for this function. (1) Select the Overlay (O) command from the Data (D) menu. Fig. 6-13 Click the Insert button and a list of files that allow overlay is displayed. Select a file name and click the Open button. The selected sample name is added and displayed as in Fig. 6-14. Now click the Close button. Fig. 6-14...