数字器件和设备用噪声抑制片.第3部分:噪声抑制片的参数特性

[中文适用范围]： IEC 62333 的这一部分提供了频率范围为 30 MHz 至 30 GHz 的数字设备和设备的电磁噪声抑制片 (NSS) 的参数表征。为制造商和用户技术数据中使用的噪声抑制片@的属性的统一表示提供了指导。 NSS 在源头抑制噪声，而不是吸收远处的噪声。因此，NSS 与自由空间中使用的射频波吸收器不同。本标准满足 NSS 制造商和用户的以下目的： ?C 帮助用户理解目录中公布的技术数据； ?C 它指导用户为每个应用选择最优选的 NSS； ?C 为制造商在新开发的NSS中建立绩效衡量基准； ?C 保持NSS及应用产品的高可靠性。本标准给出的数值是相关NSS参数（性能）的典型值。 NSS 测试的目的是对材料进行基准测试。对特定设备性能值的预测并不总是那么容易，甚至是不可能的。每项详细的材料和 NSS 规格均应由用户和制造商达成一致。 [外文原描述]： IEC 62333-3:2010 provides characterization of parameters for electromagnetic noise suppression sheet (NSS) for digital devices and equipment used in a frequency range between 30 MHz to 30 GHz. Guidance is given for uniform presentation of the properties of noise suppression sheet, intended for use in manufacturers and users technical data. NSS suppresses noise at its source, rather than absorbing noise at a distance. Therefore NSS is distinguished from RF wave absorbers used in free space. This standard addresses the following purposes of NSS manufacturers and users: - it assists users in understanding the published technical data in catalogues; - it guides users in selecting the most preferable NSS for each application; - it establishes measurement benchmarking for manufacturers of performance in new development of NSS; and - it maintains high reliability of NSS and applied products. The numerical values given in this standard are typical values of parameters (properties) of the related NSS. The purpose of NSS testing is the benchmarking of materials. Predictions of specific device performance values are not always easy or even possible. Every detailed material and NSS specification should be agreed between the user and the manufacturer.