Tele Radio T24-01 Installation Instructions Manual page 101

ANNEX B: G L O SSARY
DC
Diagnostic Coverage
FIT
Failures in time (1 FIT = 1 failure per 10^9 hours)
HFT
Hardware Fault Tolerance
MTTF
Mean Time To Failure
PFH
Probability of Failure per Hour
PL
Performance level
SFF
Safety Failure Fraction
SIL
Safety Integrity Level
IM-PM-TX101-EN-v08
Installation instructions│ T24│ Annex B: Glossary
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