CAPINTEC, INC. CAPRAC
®
-t
9-18 TESTS April 2021
To repeat the MDA Background measurement, touch the MEASURE button.
To discard the MDA Background measurement results, touch the CANCEL button.
Figure 9-12 MDA Test Screen will re-appear.
To save the MDA Background measurement results, touch the ACCEPT button. The
screen will appear similar to Figure 9-15 MDA Test Screen after Background
Measurement with the Measure Background: field box populated with the measured
Background.
Select Nuclide
Note: Only nuclides that have Efficiency data entered into the system can be
selected for the MDA Test. Reference CHAPTER 6: WELL COUNTER
INITIALIZATION; SECTION: EFFICIENCIES DATA for information on
Efficiency data.
To select a nuclide for the MDA Test, touch the Nuclide: field box. The Select
Nuclide screen will appear.
The screen displays a listing of nuclides stored in the CAPRAC
®
-t’s memory (both
default and user added nuclides) that have an Efficiency value assigned to them – 10
at a time. Reference the Appendix for a complete listing of the nuclides included in
the CAPRAC
®
-t’s memory.
The nuclide list is in alphabetical order. The length of the list will vary depending on
which nuclides have an Efficiency value assigned to them. The number of pages (or
screens) will be shown in the upper right corner of the screen indicating the length of
the list. To scroll through the list, touch the DOWN ARROW (▼) button. The next
group of 10 nuclides will be displayed and the UP ARROW (▲) button will appear
allowing the user to scroll up in the list.
To cancel any changes and return to Figure 9-12 MDA Test Screen, touch the
CANCEL button.
To select a nuclide in the list, touch the desired nuclide. The entire line for the
selected nuclide will become highlighted. (If necessary, scroll the list until the desired
nuclide is displayed.) Once a nuclide is selected from the list, an ACCEPT button will
appear. Touch the ACCEPT button to save the selected nuclide. Figure 9-15 MDA
Test Screen after Background Measurement will appear with the selected nuclide in
the Nuclide: field box.
Precision Factor
The Precision Factor (standard deviations) used in the calculation must be input. The
default Precision Factor is 3.00.
Note: The allowable range is 1.00-9.00 standard deviations.
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