Sigma BM-286A service manual Troubleshooting, Appendix Warranty Glossary Formulas

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