Amptek MCA8000D Schnellstart-Handbuch - Seite 5

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highlighted, or by using the Edit ROI button on the toolbar and then clicking and dragging across the

peak until it is highlighted.

3. Now click in the toolbar button "Calibrate" (F5) to open the calibration dialog box.

4. Move the dialog box such that both peaks are visible and then click the cursor into the first peak. The

peak should be highlighted and the Peak Information section on the right-hand information panel should

be filled in. If the peak is highlighted and there is no peak information, then the ROI is not marked

correctly. Try adjusting the start and end points of the ROI.

5. Click the Centroid button on the dialog box. This will enter the center position of the peak into the

Channel box. Then enter the energy of that peak into the Value box, e.g. 6.4, and click Add.

6. Now click the cursor into the second peak (it will highlight). Click on Centroid, enter the second energy,

e.g. 17.48, and click Add. There should now be two lines in the box.

7. In the Units box type in the energy units, e.g. keV.

8. Click OK. The scale should now be in energy. If it is not press F7, this toggles between calibrated units

and channels.

8. Save and load data

a. To save a data file, click the "File Save" icon or select Save As from the File menu. Data are saved in an

ASCII file format with a .mca extension which includes the counts in each channel, slow and fast counts, ROI

and calibration data, and the DPP configuration parameters. This file can be opened in notepad, Excel, etc.

b. To load a saved data file use the "File Open" icon. The ROI and Calibration data from a stored file can be

transferred to a spectrum being analyzed or can be automatically loaded when you open DPPMCA (View

menu -> Preferences-> General Tab).

c. To process the data using a different software package the .mca file can be opened as a text file. Alternately,

you can click "Ctrl-R" to copy the data to the Clipboard, then paste it where desired, e.g. in Excel.

d. To print a spectrum press "Ctrl-P" or the "Print" icon on the toolbar.

Amptek Inc.

MCA8000D Quick Start Guide Rev A0

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