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Vig390s Motherboard Manual V1.0
115
Other Information
Reliability
The mean time between failures (MTBF) prediction is calculated using component
and subassembly random failure rates. The calculation is based on the Bellcore
Reliability Prediction Procedure, TR-NWT-000332, Issue 4, September 1991.
The MTBF prediction is for:
• Redesigning the motherboard for alternate components if failure rates
exceed reliability expectations.
• Estimating repair rates and spare parts requirements.
MTBF data is calculated from predicted data @ 55 °C.
The MTBF prediction for the motherboard is 112,977. 7547 hours.
Temperature
Table 85: Temperature
Temperature Specification
Non-operating
-40°C to +70°C
Operating
0°C to +55°C