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Oscilloscope Introduction

Oscilloscope Introduction

BW(Bandwidth) on oscilloscope

示波器所需带宽=被测信号的最高频率成分*5

带宽: 示波器模拟前端的模拟带宽,它的大小直接决定了对信号测量能力的高低,示波器测得正弦波的幅度,不低于真实正弦波信号 3dB幅度时的最高频率,也称-3dB 截止频率点,随着信号频率增加,示波器对信号的准确显示能力都会下降。

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