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四、扫描电路在利用示波器观察各种信号电压时,除了将信号电压直接或通过放大器加于示波管的Y轴偏转板上外,同时必须在X轴偏转板间另加一与时间成线性关系的扫描电压,这样才能在荧光屏上将信号电压显示出来.由扫描电压非线性所引起的波形畸变,并不亚于Y轴放大器的畸变.因此,线性是扫描电压的一个重要质量指标,特别在近代电子示波器中,对信号电压的瞬态变化过程需要进行定性和定量测定时更见重要.
Fourth, the scanning circuit When using the oscilloscope to observe a variety of signal voltage, in addition to the signal voltage directly or through the amplifier added to the Y-axis deflection tube of the oscilloscope, at the same time must be between the X-axis deflection plates plus a linear time The relationship between the scan voltage, so that the signal can be displayed on the screen voltage waveform caused by the non-linear scanning voltage waveform distortion, and no less than the Y-axis amplifier distortion.Therefore, the linear scan voltage is an important quality indicators, in particular In modern electronic oscilloscopes, it is even more important to conduct qualitative and quantitative measurements of the transient changes in signal voltage.