Intel D95738-001US Manuale Utente

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Intel Desktop Board DG33TL Technical Product Specification 
58 
 
2.7 
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 used to estimate repair rates and spare parts requirements. 
The MTBF data is calculated from predicted data at 55 ºC.  The Desktop Board DG33TL 
MTBF is 218,279 hours. 
2.8 
Environmental 
Table 29 lists the environmental specifications for the board. 
Table 29. Desktop Board DG33TL Environmental Specifications 
Parameter Specification 
Temperature  
 Non-Operating  -40 
°C to +70 °C 
 Operating 
0 °C to +55 °C  
Shock  
 
Unpackaged 
50 g trapezoidal waveform 
 
Velocity change of 170 inches/second² 
 
Packaged 
Half sine 2 millisecond 
 
Product weight (pounds) 
Free fall (inches) 
Velocity change 
(inches/sec²) 
 <20 
36 
167 
 21-40 
30 
152 
 41-80 
24 
136 
 81-100 
18 
118 
Vibration  
 
Unpackaged 
5 Hz to 20 Hz:  0.01 g² Hz sloping up to 0.02 g² Hz 
 
20 Hz to 500 Hz:  0.02 g² Hz (flat) 
 
Packaged 
10 Hz to 40 Hz:  0.015 g² Hz (flat) 
 
40 Hz to 500 Hz:  0.015 g² Hz sloping down to 0.00015 g² Hz