BNC 970 Portable Multi-Channel Analyzer (MCA) - Manual (Page 29)

Model 970 Instruction Manual 26
If the Allow Edit box is selected, the controls for editing the found peaks are enabled.
When Double Click Adds Peak is selected, double clicking on a portion of the spectrum will
add a “found peak.” This new peak is treated the same as the others found by the
computerized search, and this method of adding “found peaks” may be used instead of, or as
a supplement to, the computerized search.
The arrow buttons below Selected Peak change the currently selected found peak, which is
indicated by the displayed number, and highlighted in fuchsia in the Spectrum Display. Data
that is displayed and edits that are made will apply only to the currently selected found peak.
Values of Left Edge, and Right Edge for the Centroid, can be altered by using the single and
double arrow buttons. The single arrow buttons will move the relevant value up or down the
spectrum by one channel, and the double arrow buttons will move the relevant value up or
down the spectrum by 10 channels. The current value will be displayed (in keV) in the
associated gray box.
Finally, the Kill Peak button will permanently delete the currently selected found peak
(whether found by the computer search or manually assigned).
ROI-Based
This displays the ROI-Based Quantitative Analysis Panel.
Clicking the ROI Analysis button performs an ROI-by-ROI analysis of the currently displayed
spectrum, and calculates the activities for each ROI. A summary of this data is displayed for
each ROI. Change the currently selected ROI (indicated by fuchsia on the Spectrum
Display
) by clicking the arrow buttons.
Clicking the Report… button displays the detailed results of the ROI-based Quantitative
Analysis. From the “report” screen, this data can be viewed, printed, or saved. Note: The
contents of this report and the use of the report screen are discussed in detail in other
portions of this manual.