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IEC 61842: Microphones and Earphones for Speech Communications - First Edition
Abstract: This standard applies to the microphone part and earphone part of handsets, headsets or earsets for speech communications, and also to the microphone units and earphone units of built-in handsets, headsets or earsets. The ...
IEC TR 60721-4-0: English -- Classification of Environmental Conditions - Part 4-0: Guidance for the Correlation and Transformation of Environmental Condition Classes of IEC 60721-3 to the Environmental Tests of IEC 60068 - Introduction - First Edition
Abstract: Scope and object
This part of IEC 60721 is a technical report dealing with the correlation and transformation of the conditions given in IEC 60721-3 to the environmental tests defined in IEC 60068-2. ...
This part of IEC 60721 is a technical report dealing with the correlation and transformation of the conditions given in IEC 60721-3 to the environmental tests defined in IEC 60068-2. ...
IEC 60721-3-7: English -- Classification of Environmental Conditions - Part 3-7: Classification of Groups of Environmental Parameters and Their Severities - Portable and Non-Stationary Use - Edition 2.1; Edition 2:1995 Consolidated with Amendment 1:1996
Abstract: This standard classifies groups of environmental parameters and their severities to which products are subjected during portable and non-stationary use, including periods of transfer, down time, maintenance and repair. ...