Environmental conditions and environmental testing

Equipment engineering features, such as construction and production technology are determining factors for the stability of telecommunications equipment. Internationally accepted IEC test methods are available for environmental testing, and now there are special standardized environmental classes and test programs according to the different classes for telecommunications equipment. Developed by ETSI EE1 and recommended for conformance testing. This coordination of the classes and test methods with given severities gives appropriate tools for test engineers to get acceptable proof of the products´ ability to survive (transportation, storage) and to operate under specified environmental conditions, as environmental testing belongs to the type approval procedure. This paper gives an overview of the application of the environmental and equipment engineering standards, together with examples of HTC PKI requirements, type approval procedure and laboratory test results