81
3.7 Reliability
The Mean Time Between Failures (MTBF) prediction is calculated using component and
subassembly random failure rates. The calculation is based on the Telcordia SR-332
Issue 2, Method I, Case 3, 55 ºC ambient. The MTBF prediction is used to estimate
repair rates and spare parts requirements. The MTBF for the board is 319,009 hours.
3.8 Environmental
Table 40 lists the environmental specifications for the N2800 Embedded Board that
contains the and Intel® NM10 Express Chipset.
Table 40. Embedded Board Environmental Specifications
Operating (ambient,
outside chassis)
Operating
(inside chassis)
50 g trapezoidal waveform
Velocity change of 170 inches/s²
Velocity Change (inches/s²)
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)
5 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
NOTE
Maximum operating temperatures based on fanless chassis configuration
(tests performed with Morex* T-1620 thin-mITX chassis).
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