ISO 20711:2017规定了仪器的光学、机械、化学和电气性能或性能数据对环境影响的耐受性方面应满足的要求，因此确定了应用的地理和技术领域。它适用于消费者伸缩系统和配件，如狩猎和运动产品。 ISO 9022相关部分规定的环境试验方法适用于不同的应用领域，以确定仪器在各自应用领域的适用性。 ISO 20711:2017是仪器标准中环境要求和环境试验规范的基础。 如有必要，可在仪器标准中修改这些要求和试验。 ISO 20711:2017未涉及仪器从制造商运输至用户期间的包装要求。 注:本文件所理解的性能和性能特征的标称值由制造商提供的规范、交货技术条款和仪器标准预先确定。

ISO 20711:2017 specifies requirements to be met with regard to resistance of the optical, mechanical, chemical and electrical properties or performance data of instruments to environmental influences and hence determines geographical and technical areas of application. It applies to consumer telescopic systems and accessories, such as hunting and sporting products. Environmental test methods as specified in relevant parts of ISO 9022 are assigned to the various areas of application for the purpose of ascertaining the suitability of the instruments in their respective area of application. ISO 20711:2017 is the basis for the specification of environmental requirements and environmental tests in instrument standards. If necessary, these requirements and tests can be amended in the instrument standards. ISO 20711:2017 does not deal with the requirements to be met by the packaging of the instrument during transport from the manufacturer to the user. NOTE Nominal values of properties and performance characteristics as understood by this document are predetermined by specifications provided by the manufacturer, technical terms of delivery and instrument standards.