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Distortion measurement for FM transmission paths - using residual HF components of test signal applied to several selectors corresp. to discrete frequency values
Distortion measurement for FM transmission paths - using residual HF components of test signal applied to several selectors corresp. to discrete frequency values
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机译:FM传输路径的失真测量-使用施加到多个选择器的测试信号的残留HF分量对应。离散频率值
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摘要
A distortion measurement unit for f.m. transmission paths using the intermodulation method has a receiver in which the reference signal frequency is automatically tuned to the transmitted measurement frequency. The transmitted signal contains a 1.f. sweep signal and a higher frequency measurement signal. Residual h.f. components of the test signal are applied to several selectors each corresp. to a possible discrete frequency value, which generate switching signals to select the relevant reference oscillator frequency according to the signal frequencies occurring.
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