利用射频附件进行低频测试谈

• 作 者: Joel M.Goldberg
• 出 处: 电子设计技术
• 发表日期: 1997年08期
• 关键词: 衰减器 视频测试 无线电频率 微波检测 测试装置 测试设备 音频设备 输出电平 信号电平 低频信号

你也许认为射频(RF)和微波检测与众不同,与音频或视频测试毫不相干,它们需要特种波导和昂贵的测试设备。然而,事实并非如此。因为无线电频率几乎能够达到DC(直流),诸如衰减器和转换器等很多同轴射频和微波附件也能够达到DC,所以,你能够在你的低频测试装置中使用这些射频附件。

You might think that radio frequency (RF) and microwave detection are different and have nothing to do with audio or video testing, which require special waveguides and expensive test equipment. However, it is not. Because radio frequency can reach almost DC (DC), many coaxial RF and microwave accessories such as attenuators and converters can also reach DC, so you can use these RF accessories in your low frequency test set.