Agilent Technologies 3000 X-Series Instrukcja Obsługi Pobierz pdf (Strona 117)

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117

Agilent 3000 X-Series Oscilloscopes

Advanced Training Guide

Oscilloscope Bandwidth Tutorial

Defining Oscilloscope Bandwidth 117

Required Bandwidth for Analog Applications 118

Required Bandwidth for Digital Applications 119

Digital Clock Measurement Comparisons 122

Oscilloscopes have many different specifications that determine the

accuracy that signals can be captured and measured. But the primary

specification of an oscilloscope is its bandwidth. This tutorial on

oscilloscope bandwidth will provide you some helpful hints on how to

select an oscilloscope with the appropriate bandwidth for your digital and

analog applications. But first, let’s define oscilloscope bandwidth.

Defining Oscilloscope Bandwidth

All oscilloscopes exhibit a low-pass frequency response that rolls- off at

higher frequencies as shown in Figure 85. Most scopes with bandwidth

specifications of 1 GHz and below typically have what is called a Gaussian

frequency response. An oscilloscope Gaussian frequency response

approximates a single- pole low- pass filter.

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Agilent Technologies 3000 X-Series Instrukcja Obsługi Strona 117