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3. OPERATING INSTRUCTIONS page 18
Model BM-286A
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.