本标准规定了可更换电子模块电磁干扰（发射和敏感性）特性控制的接口和相关验证要求。此类设备仅作为其他子系统或系统的组成部分使用，不得单独使用。本标准最适用于具有以下特征的项目:插入设备机架或机架的可拆卸/可更换电子电路卡模块，主要通过与背板直接接口的边缘连接器进行电气互连，以及从背板电源获得的电源输入。本标准不应直接适用于可作为独立系统或子系统单独使用的设备（通过线束与子系统的其他盒子相连的单独盒子），或整个系统平台。假设机架/机架设备及其全套REMs在某些配置下按照设备EMI标准（如MIL）进行测试- STD-461E。本标准最适用于REM鉴定比使用新REM重新鉴定机架/机架设备更有效的情况。

This standard establishes interface and associated verification requirements for the control of the electromagnetic interference (emission and susceptibility) characteristics of replaceable electronic modules. Such equipment is used only as an integral part of other subsystems or systems, and may not be used independently. This standard is best suited for items that have the following features: removable/replaceable electronic circuit card modules that plug into an equipment rack or frame, with electrical interconnections primarily through edge connectors that interface directly with a backplane, and electrical power input derived from the backplane power sources. This standard should not be directly applied to equipment that can be used independently as a stand-alone system or subsystem (separate box intra-connected by a wire harness to other boxes of a subsystem), or to entire system platforms. It is assumed that the rack/frame equipment with its full complement of REMs is tested in some configuration to an equipment EMI standard such as MIL-STD-461E. This standard is best suited for situations where the qualification of the REM is more effective than requalification of the rack/frame equipment with the new REM.