
LS 6000 Scintillation System User’s Manual
PN 247971-F
6-23
Isotope/DPM Libraries
Setting Up A Quench Curve
6
1. From the Main Menu, highlight “Isotope/DPM Libraries” and press SELECT. The Main
Editing Window displays two prompts: Setup and Review Isotopes and Setup and
Review DPM Quench Curves.
2. Highlight “Set Up and Review DPM Quench Curves” and press SELECT. The Main
Editing Window displays two prompts: Normal Quench Curves and Low Level Quench
Curves.
3. Highlight “Normal Quench Curves” if the quench curve to delete is stored in the
Standard DPM Library. Highlight “Low Level Quench Curves” if the quench curve to
delete is stored in the Low Level DPM Library. Press SELECT. The Main Editing
Window displays two prompts: Setup Quench Curves and Review/Edit/Delete Quench
Curves.
4. Highlight “Review/Edit/Delete Quench Curves” and press SELECT. The menu shown in
Figure 6.14 is displayed.
5. Highlight “Select Quench Curve” and choose the quench curve to delete.
6. Before you delete a quench curve, you may want to save a printout of the curve. To print
the quench curve, highlight “Add or Delete Quench/Efficiency Pairs” and press SELECT.
With the menu shown in Figure 6.16 displayed, press START. When the quench curve is
printed, press PREVIOUS MENU to display the menu shown in Figure 6.14 again.
7. Highlight “Delete Entire Curve”.
NOTE Before proceeding, ensure that the curve selected and displayed next to “Select Quench Curve:” is the
curve you want to delete. Once the delete action is taken, all the parameters for this curve are lost.
NOTE A curve deleted accidentally can be restored, point by point, from the printout of the original quench
correlation table, if available. Refer to Manual Entry of Quench Curves Section 6 for information on manually
entering a quench curve.
Once you are assured this is the correct quench curve, press DELETE. The curve is deleted.
8. If no further editing is required, highlight “Review/Edit Complete” and press SELECT. If
you are finished using the DPM Library, press MAIN MENU.
Manual Entry of Quench Curves
A quench curve that is no longer stored in the DPM Library can be re-entered If a printout or
other record of the quench curve (H#’s or IC#’s and efficiencies) is available. The curve is
entered by adding each data point and quench monitor value. Five to ten points may be
added.
To manually enter a quench curve:
1. Follow steps 1-12 given in Counting the Standards Section 6, Counting the Standards.
2. Press the Down Cursor Arrow key to display the menu shown in Figure 6.11. Highlight
“Enter Quench Curve Manually” and press SELECT. The menu shown in Figure 6.16 is
displayed. All values are zero.
3. To enter points to the quench curve, type in the H# or IC# value and the % Efficiency for
each point you wish to add. For dual and triple label quench curves, enter values for Eff-
1, Eff-2 and Eff-3. Press ENTER after each value is typed in. Use the Cursor Arrow keys
to move to the next entry. A maximum often points for each quench curve may be
stored.
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