CAPINTEC, INC. CAPTUS
®
4000e
13-14 MCA August 15
Note: It is recommended that the Save as type: is not changed from Counting Setup Files
(*.csu)
The MCA settings stored in the file will be the Counting Method, Counting Time/Counts and
defined ROIs.
Recall Counting Setup
To retrieve stored counting setup, select Load Previous Counting Setup from the Load
Previous button on the menu bar. A dialog box similar to the Load Spectrum dialog box will
appear (as shown in
Figure 13-14), but the file extension will be .csu.
Select the desired settings file from the list. The default folder is C:\Captus4000e\Data. To
load a spectrum from a different folder, browse to the desired location, and then select the
file name. To load the settings, select the Open button.
Restore Current Settings
To reset all settings back to the stored settings from the latest Autocalibration, select
Restore Current Settings from the Load Previous button on the menu bar. All settings will
be restored to the values that were stored during the previous Autocalibration.
PRINTING MCA DATA
To print an MCA spectrum report, select the Print button on Figure 13-1 MCA Main Screen.
The printout will contain the spectrum shown on the screen, with ID information, date and
time of acquisition, real and live times, gain, voltage, and detector settings. For each active
ROI, total counts and total count rate, as well as starting and ending channels, integral
counts, and peak centroid channel will be printed.
CUSTOMIZING MCA SETTINGS
The MCA module provides full control over MCA settings used to acquire a spectrum. The
initial settings, determined in Autocalibration, are automatically transferred to the MCA
module, so that the 1024 channels are calibrated at about 2 keV/channel. However, these
can be changed using the following procedures.
Note: When the MCA mode is exited, the automatic calibration settings are restored. This is
to assure correct definition of any ROIs used in the clinical modules of the CAPTUS
®
4000e.
To alter the automatic calibration settings, select the Calibration button from the menu bar
located at the top of Figure 13-1 MCA Main Screen. The Calibration Settings frame will
appear in the MCA Main Screen as shown in Figure 13-16.
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