描述了混响室或搅拌室对屏蔽衰减的测量，该室几乎适用于任何类型的微波元件，并且没有理论上的频率上限。由于测试设备的尺寸，它仅限于低频，这取决于频率，并且只是几种测量衰减的方法之一。就本标准而言，微波组件的示例包括波导、移相器、双工器/复用器、功率分配器/组合器等。

Describes the measurement of screening attenuation by the reverberation, or stirred, chamber, suitable for virtually any type of microwave component and having no theoretical upper frequency limit. It is only limited toward low frequencies due to the size of the test equipment, which is frequency dependent and is only one of several methods of measuring sreening attenuation. For the purpose of this standard, examples of microwave components are waveguides, phase shifters, diplexers/multiplexers, power dividers/combiners, etc.