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Chapter 4
4.4
Environmental Specifications
4.4.1
Temperature
Operating (with appropriate airflow):
®
•
Non operating:
®
Note:
The maximum operating temperature is the maximum measurable temperature on any spot on a module's
1
surface. You must maintain the temperature according to the above specification.
4.4.2
Humidity
Operating:
®
Non operating:
®
4.5
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) : tbd
®
Note:
Fans usually shipped with Kontron Embedded Modules GmbH products have 50,000-hour typical operating life.
The above estimates assume no fan, but a passive heat sinking arrangement. Estimated RTC battery life (as
opposed to battery failures) is not accounted for in the above figures and need to be considered for
separately. Battery life depends on both temperature and operating conditions. When the Kontron unit has
external power; the only battery drain is from leakage paths.
Kontron User's Guide MOPSlcdLX
Maximum operating temperature: 0 to +60 °C
-10 to +85 °C
10% to 90% (non condensing)
5% to 95% (non condensing)
11
Specifications
(1)
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