Intel DH87RL Technical product specification - Page 60
Reliability, Environmental
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Intel Desktop Board DH87RL Technical Product Specification 2.7 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using a parts count method. The calculation is based on the Telcordia SR-332, Issue 2; Method I Case 3 50% electrical stress, 55 ºC ambient. 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 MTBF for the Intel Desktop Board DH87RL is 356,510 hours. 2.8 Environmental Table 35 lists the environmental specifications for the board. Table 35. Environmental Specifications Parameter Specification Temperature Non-Operating -20 °C to +70 °C (Note) Operating 0 °C to +55 °C The operating temperature of the board may be determined by measuring the air temperature from within 1 inch of the edge of the chipset/PCH heatsink and 1 inch above the board, in a closed chassis, while the system is in operation. Shock Unpackaged 50 g trapezoidal waveform Velocity change of 170 inches/s² Packaged Half sine 2 millisecond Product Weight (pounds) Free Fall (inches) Velocity Change (inches/s²)