SIGMA BM-286A User Manual
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6. TROUBLESHOOTING ......................................................................................................... 39
6.1. DIAGNOSTIC AIDS ................................................................................................ 39
6.2. FAULT ISOLATION................................................................................................ 40
6.3. COMPUTERS........................................................................................................... 41
6.4. SIGNAL INTERFACE ASSEMBLY AND DETECTORS ..................................... 41
APPENDIX .................................................................................................................................. 42
A. WARRANTY .......................................................................................................................... 42
B. GLOSSARY ............................................................................................................................ 43
C. FORMULAS ........................................................................................................................... 45
C.1. ACTIVITY FROM COUNTS .................................................................................. 45
C.2. EFFICIENCY ........................................................................................................... 45
C.3. N*SIGMA ALARM LEVEL ................................................................................... 45
C.4. RELIABLE DETECTABLE ACTIVITY (RDA) FORMULA................................ 46
C.5. SIGNAL TO BACKGROUND RATIO................................................................... 46
C.6. VARIANCE.............................................................................................................. 47
D. CONFIGURATION TRACKING SHEET.......................................................................... 48
E. PARTS ..................................................................................................................................... 49
E.1. RECOMMENDED SPARE PARTS ........................................................................ 49
E.2. SPARE PARTS ORDERING INFORMATION...................................................... 49
F. DRAWINGS ............................................................................................................................ 50