如果所有的措施都不能避免RF干扰进入测试输入端，那么就可能需要在设备的输入通路上进行外部滤波，如图3 - 7所示。

If all else fails to prevent rf interference from being introduced into the input, external filtering of the device input paths may be required, as shown in Figure 3-7.

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包括测试系统整体方案设计，外部设备设计组合，将虚拟技术融合到设计中等。

Include test system whole project design, peripheral equipment design team proper, blend virtual technology in to the design.

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