公开(公告)号：US4607216A

公开(公告)日：1986-08-19

申请号：US654132

申请日：1984-09-25

申请人： Takahiro Yamaguchi ,  Masayuki Ogawa ,  Toshiharu Kasahara

发明人： Takahiro Yamaguchi ,  Masayuki Ogawa ,  Toshiharu Kasahara

IPC分类号： G01R27/28 ,  G01R23/16

CPC分类号： G01R23/16

摘要： A frequency range of measurement is divided into a plurality of regions. For each region a test signal suitable for measurement of the region is generated independently, and the test signal is supplied to a device under test. The output of the device under test is converted by an AD converter into a digital signal, which is then subjected to fast Fourier transform. For each region the sensitivity of the AD converter is set for optimal conversion of the signal level at its input side by the converter, and then the fast Fourier transform is carried out. On the basis of the sensitivity set for one of the regions, the magnitude of the fast Fourier transform output in each of the other regions is corrected according to the sensitivities set for the other regions.

摘要翻译： 测量的频率范围被分成多个区域。 对于每个区域，独立地生成适合于该区域的测量的测试信号，并且将测试信号提供给被测设备。 被测器件的输出由AD转换器转换为数字信号，然后进行快速傅里叶变换。 对于每个区域，AD转换器的灵敏度被设置用于通过转换器在其输入侧的信号电平的最佳转换，然后执行快速傅里叶变换。 基于为一个区域设置的灵敏度，根据为其他区域设置的灵敏度来校正每个其他区域中的快速傅里叶变换输出的幅度。