3 Specifications
Kontron User's Guide ETX CD 16
3.4.1 Temperature
Operating: (with Kontron Embedded Modules heat-spreader plate assembly):
® Ambient temperature: 0°C to 60°C
® Maximum heatspreader-plate temperature: 0°C tp 60°C (*)
Non-operating:
® -30°C to 85°C
See the Thermal Management chapter for additional information.
Note: *The maximum operating temperature with the heatspreader plat e is the maximum measurable temperature
on any spot on the heatspreader’s surface. You must maintain the temperature according to the above
specification.
Operating (without Kontron Embedded Modules heat-spreader plate assembly):
® Maximum operating temperature: 0°C to 60°C (**)
Non operating:
® -30° to +85°C
See the Thermal Management chapter for additional information.
Note: **The maximum operating temperature is the maximum measurable temperature on any spot on a module’s
surface. You must maintain the temperature according to the above specification.
3.4.2 Humidity
® Operating: 10% to 90% (non condensing)
® Non operating: 5% to 95% (non condensing)
3.5 MTBF The following MTBF (Mean Time Between Failure) 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 (hours) : 109418