ISO 11452-7:2003规定了直接射频功率注入试验，用于测定乘用车和商用车的电子部件对窄带电磁能产生的电气干扰的抗扰度，而不考虑推进系统（例如火花点火发动机、柴油发动机、电动机）。该测试方法涉及向DUT（被测设备）提供差模激励，适用于除射频接地之外的所有DUT引线。该方法适用于0.25 MHz至500 MHz的频率范围，可用于预测车辆环境中辐射和传导射频能量（包括传导瞬态射频能量）的兼容性，尤其适用于隔离DUT内的敏感电路和评估潜在解决方案。

ISO 11452-7:2003 specifies a direct RF power injection test for determining the immunity of electronic components of passenger cars and commercial vehicles to electrical disturbances from narrowband electromagnetic energy, regardless of the propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The test method, which involves providing differential mode excitation to the DUT (device under test), is applicable to all DUT leads except RF Ground. Applicable over the frequency range 0,25 MHz to 500 MHz, the method can be used to predict the compatibility in the vehicle environment with respect to radiated and conducted RF energy, including conducted transient RF energy, and is especially useful as a means of isolating the susceptible circuits within a DUT and evaluating potential solutions.