Kontron COMe Ref.Carrier-i T10 - Manual (Page 11)

COMe Reference Carrier-i Type 10 / Specification
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3.5 Environmental Specification
Ambient temperature
» Operating: -40°C to +85 °C 1
» Non-operating: -40 to +85 °C
Humidity
» Operating: 10% to 90% (non condensing)
» Non operating: 5% to 95% (non condensing)
3.6 MTBF
The following MTBF (Mean Time Between Failures) values were calculated using a combination of manufacturer‟s test
data, if the data was available, and a Bellcore calculation for the remaining parts. The Bellcore calculation used is
“Method 1 Case 1”. In that particular method the components are assumed to be operating at a 50 % stress level in a
40° C ambient environment and the system is assumed to have not been burned in. Manufacturer‟s data has been
used wherever possible. The manufacturer‟s data, when used, is specified at 50° C, so in that sense the following
results are slightly conservative. The MTBF values shown below are for a 40° C in an office or telecommunications
environment. Higher temperatures and other environmental stresses (extreme altitude, vibration, salt water
exposure, etc.) lower MTBF values.
» System MTBF: tbd hours
1 The whole carrier board was designed to accomplish industrial temperature range. This was not possible for all
connectors and chips. Following devices have a different temperature rating:
» Audio Codec: -20°C to +85°C
» DVI Connector: 0°C to 60°C