ROCHESTER ECE 111 - Lecture Notes - XYZs of Oscilloscopes

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XYZs of Oscilloscopesoscilloscopeswww.tektronix.com1Table of ContentsIntroduction ....................................................................3Signal IntegrityThe Significance of Signal Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Why is Signal Integrity a Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Viewing the Analog Origins of Digital Signals . . . . . . . . . . . . . . . . . . . . . . . . . . .5The OscilloscopeUnderstanding Waveforms and Waveform Measurements . . . . . . . . . . . . . . . . . .6Types of Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Sine Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Square and Rectangular Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Sawtooth and Triangle Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Step and Pulse Shapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Periodic and Non-periodic Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Synchronous and Asynchronous Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Complex Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Waveform Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Frequency and Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Waveform Measurements with Digital Oscilloscopes . . . . . . . . . . . . . . . . . .10The Types of OscilloscopesAnalog Oscilloscopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Digital Oscilloscopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Digital Storage Oscilloscopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Digital Phosphor Oscilloscopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15Digital Sampling Oscilloscopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17The Systems and Controls of an OscilloscopeVertical System and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Position and Volts per Division . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Input Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Bandwidth Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Alternate and Chop Display Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Horizontal System and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21Acquisition Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21Acquisition Modes . . . …


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