3. OPERATING INSTRUCTIONS page 18
The actual formula used to determine minimum scan time is derived from the RDA formula found in Appendix C. Formulas.
The specific alarm level uses the initial "quick weight" x 0.9 to determine the alarm level used for scan time calculations. This provides a safety margin in the calculations.
The final alarm level comparison is based on the more accurate weight normalized to count time.
NOTE:
The minimum count time calculation is disabled if N*Sigma alarm type is selected. If N*Sigma alarm type is selected in conjunction with a "0" count time, the count time will automatically be set to 30 seconds.
Count Display:
Selects the method used for displaying counts on the screen and in the reports. The background counts will always be displayed in counts/second. The count display options only control the display after a scan.
The available options are:
1.Total counts per scan: Displays total counts per scan time.
2.Net counts per scan: Displays counts per scan time above background.
3.Total counts per second: Displays total counts per second.
4.Net counts per second: Displays counts per second above background.
MCA Data:
MCA data is an optional entry feature.
Model
