Intel D865GRH D865GRH_TechProdSpec. - Page 93

Reliability, 14 Environmental

Page 93 highlights

Technical Reference 2.13 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 D865GRH MTBF is 97,390 hours. 2.14 Environmental Table 44 lists the environmental specifications for the Desktop Board D865GRH. Table 44. Desktop Board D865GRH 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/second Packaged Half sine 2 millisecond Product Weight (pounds) Free Fall (inches) Velocity Change (inches/sec)

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Technical Reference
93
2.13 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
º
C.
The Desktop Board D865GRH MTBF
is 97,390 hours.
2.14 Environmental
Table 44 lists the environmental specifications for the Desktop Board D865GRH.
Table 44.
Desktop Board D865GRH 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/second
Packaged
Half sine 2 millisecond
Product Weight (pounds)
Free Fall (inches)
Velocity Change (inches/sec)
<20
36
167
21-40
30
152
41-80
24
136
81-100
18
118
Vibration
Unpackaged
5 Hz to 20 Hz:
0.01 g
²
Hz sloping up to 0.02 g
²
Hz
20 Hz to 500 Hz:
0.02 g
²
Hz (flat)
Packaged
10 Hz to 40 Hz:
0.015 g
²
Hz (flat)
40 Hz to 500 Hz:
0.015 g
²
Hz sloping down to 0.00015 g
²
Hz