测量、控制和实验室用的电设备 电磁兼容性要求 第21部分：特殊要求 无电磁兼容防护场合用敏感性试验和测量设备的试验配置、工作条件和性能判据

Electrical equipment for measurement, control and laboratory use—EMC requirements—Part 21: Particular requirements—Test configurations, operational conditions and performance criteria for sensitive test and measurement equipment for EMC unprotected applic