示波器探头对测量结果的影响分析

用示波器和探头对信号进行测量,是对信号进行分析和采样的手段之一.随着被测信号频率的提高,示波器和探头构成的这个测量系统中存在的寄生参数将给被测波形引入很大的失真,如何选用合适的探头与示波器匹配,将测量误差减到最小,是必须解决的问题,只有深刻理解了这些寄生参数对测量波形的影响,在测试中才可以采用适当的防范步骤,保证最大的测量精度.

Analysis of Oscilloscope Probe Effect on Measurement

Measuring signals with an oscilloscope and its probes is one of signal analyzing and sampling means. As increment of signal frequency to be measured, the spurious parameters existing in the measuring system composed by the oscilloscope and probe will introduce serious distortion for the measured waveform. How to select a suitable probe matched with the oscilloscope so as to minimize the measurement error is a problem needed to be solved. If we understand how these spurious parameters affect the measurement waveform, can we take suitable measures in measuring so as to ensure the maximum measurement accuracy.