Sensores

XYZs of Oscilloscopes
Primer

Primer

Table of Contents
Introduction..................................................................... 4 Signal.Integrity. ..........................................................5.-.6 . The Significance of Signal Integrity ....................................5 Why is Signal Integrity a Problem? ....................................5 Viewing theAnalog Origins of Digital Signals .....................6 The.Oscilloscope. ....................................................7.-.12 . Understanding Waveforms and Waveform Measurements ..................................................................7 Types of Waves .................................................................8 Sine Waves.................................................................9 Square and Rectangular Waves...................................9 Sawtooth and Triangle Waves......................................9 Step and Pulse Shapes ...............................................9 Periodic and Non-periodic Signals ...............................9 Synchronous and Asynchronous Signals .....................9 Complex Waves........................................................10 Waveform Measurements ...............................................11 Frequency and Period ...............................................11 Voltage ......................................................................11 Amplitude ..................................................................11 Phase........................................................................11 Waveform Measurements with Digital Oscilloscopes..12 The.Types.of.Oscilloscopes...................................13.-.18 Digital Storage Oscilloscopes ..........................................13 Digital Phosphor Oscilloscopes .......................................15 Mixed Domain Oscilloscopes ..........................................17 Mixed Signal Oscilloscopes.............................................17 Digital Sampling Oscilloscopes........................................18

The.Systems.and.Controls.of.an.Oscilloscope.....19.-.32 Vertical System and Controls ..........................................20 Position and Volts per Division ...................................20 Input Coupling ...........................................................20Bandwidth Limit ........................................................20 Bandwidth Enhancement ..........................................21 Horizontal System and Controls ......................................21 Acquisition Controls ..................................................21 Acquisition Modes .....................................................21 Common horizontal controlsinclude:.........................21 Types of Acquisition Modes .......................................22 Starting and Stopping the Acquisition System ...........22 Sampling ...................................................................23 Sampling Controls .....................................................23 Real-time Sampling Method ......................................23 Equivalent-time SamplingMethod .............................25 Position and Seconds per Division.............................27 Time Base Selections ................................................27 Zoom/Pan .................................................................27 Search ......................................................................27 XY Mode...................................................................27 Z Axis ........................................................................27 XYZ Mode with DPO and XYZ Record Display ...........27 Trigger System and Controls ...........................................28 Trigger Position..........................................................30 Trigger Level and Slope .............................................30 Trigger Modes...