Agilent Technologies InfiniiVision 3000 X- Series Einrichtungshandbuch



Agilent 3000 X-Series

Oscilloscopes

Advanced Training Guide

Lab guide and tutorial for making advanced

oscilloscope measurements using an Agilent

3000 X-Series oscilloscope with the DSOXEDK

training kit.

Notices

The copyright on this instructional material

grants you permission to reprint, modify,

and distribute in whole or in part the docu-

ment for the purpose of training on Agilent

test equipment.

Manual Part Number

75010-97011

Edition

June 15, 2011

Available in electronic format only

Agilent Technologies, Inc.

1900 Garden of the Gods Road

Colorado Springs, CO 80907 USA

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Safety Notices

CAUTION

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3000 X-Series Oscilloscopes Advanced Training Guide 3

Contents

1 Getting Started

Lab Guide—At a Glance 5

Front Panel Overview 6

Run Control 7

Waveform Controls 7

Horizontal Controls 8

Vertical Controls 9

Trigger Controls 9

Tools Controls 10

2 Oscilloscope Familiarization Labs

Lab #1: Using Cursors and Automatic Parametric Measurements 12

Lab #2: Using Zoom Display to Perform Gated Measurements 19

Lab #3: Using Waveform Math 23

Lab #4: Using Peak Detect Acquisition Mode 27

Lab #5: Using Segmented Memory Acquisition Mode 30

Lab #6: Using Mask Test 35

3 Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs

Lab #7: Triggering on a Digital Burst using Trigger Holdoff 40

Lab #8: Triggering on Unique Pulses and Glitches using “Pulse-width” Trigger 44

Lab #9: Triggering on the Nth Pulse within a Burst using “Nth Edge Burst” Trigger 48

Lab #10: Triggering on and Searching for Edge Speed Violations 50

Lab #11: Triggering on and Searching for Runt Pulses 56

Lab #12: Triggering on Setup & Hold Time Violations 61

Lab #13: Triggering on a Qualified Burst using “Edge then Edge” Trigger 64

Lab #14: Triggering on Logic Patterns using the MSO’s Digital Channels 66

4 Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs

Lab #15: Decoding, Triggering, and Searching on I2C Serial Bus Signals 72

4 3000 X-Series Oscilloscopes Advanced Training Guide

Lab #16: Decoding, Triggering, and Searching on SPI Serial Bus Signals 79

Lab #17: Decoding, Triggering, and Searching on RS232/UART Serial Bus Signals 85

Lab #18: Decoding, Triggering, and Searching on CAN Serial Bus Signals 93

Lab #19: Decoding, Triggering, and Searching on LIN Serial Bus Signals 99

Lab #20: Decoding, Triggering, and Searching on I2S Serial Bus Signals 105

A Oscilloscope Block Diagram and Theory of Operation

DSO Block Diagram 112

ADC Block 112

Attenuator Block 113

DC Offset Block 113

Amplifier Block 113

Trigger Comparator and Trigger Logic Blocks 114

Timebase and Acquisition Memory Blocks 114

Display DSP Block 115

B Oscilloscope Bandwidth Tutorial

Defining Oscilloscope Bandwidth 117

Required Bandwidth for Analog Applications 118

Required Bandwidth for Digital Applications 119

Rule of Thumb 119

Step 1: Determine fastest actual edge speeds 120

Step 2: Calculate fknee 120

Step 3: Calculate scope bandwidth 120

Example 121

Digital Clock Measurement Comparisons 122

C Related Agilent Literature

Index

5

Agilent 3000 X-Series Oscilloscopes

Advanced Training Guide

Getting Started

Lab Guide—At a Glance 5

Front Panel Overview 6

Lab Guide—At a Glance

This advanced oscilloscope training guide and tutorial is intended to be

used with Agilent Technologies InfiniiVision 3000 X- Series oscilloscopes

(DSO and MSO models) that are licensed with the Oscilloscope Education

Training Kit (DSOXEDK). When licensed with this training kit,

3000 X- Series oscilloscopes are able to generate a broad range of built- in

training signals.

The built- in training signals can be probed by simply connecting a

standard 10:1 passive probe between channel- 1’s input BNC and the front

panel terminal labeled “Demo 1”, and another probe between channel- 2’s

input BNC and the terminal labeled “Demo 2” as shown on the next page.

To turn on specific training signals for each of the labs documented in this

training guide, simply:

1Press the scope’s front panel [Help] key.

2Press the Training Signals sofkey.

3Turn the Entry knob to select the appropriate training signal.

4Press the Output softkey to enable the training signal output on the

Demo terminal(s).

6 3000 X-Series Oscilloscopes Advanced Training Guide

1Getting Started

If you not familiar with the Agilent InfiniiVision 3000 X- Series

oscilloscope, first look over the main sections of the front panel as

illustrated on the following pages, and then begin with Chapter 2,

“Oscilloscope Familiarization Labs,” starting on page 11.

Once you have become familiar with using the basic functions of the

oscilloscope, you can then skip to particular labs of interest. Each

hands- on lab can be considered as a standalone lab exercise because each

begins with a default setup. In other words, successive labs do not build

on the previous lab. They can be completed in any order of preference.

Front Panel Overview

For instant help on any topic, press and hold any key, softkey, or knob.

Getting Started 1

3000 X-Series Oscilloscopes Advanced Training Guide 7

Run Control

When the oscilloscope is turned on, or if [Auto Scale] is pressed, the

acquisition will be set to [Run]. At any time you may [Stop] the acquisition

process to examine a signal in detail or to save it.

•The [Default Setup] key on the front panel sets the oscilloscope to the

default configuration.

Because the oscilloscope may have been used in a variety of

applications by a variety of people, it is a good measurement procedure

to put the oscilloscope in a known starting mode (Default Setup). This

makes it easy to duplicate measurements because no special conditions

are set.

•The [Auto Scale] key on the front panel automatically configures the

oscilloscope by analyzing all active channels, turning them on and

setting the timebase, V/div, and trigger conditions for an initial display.

•Press the [Single] key to make a single acquisition and stop the

acquisition process.

Waveform Controls

•The [Acquire] key on the front panel lets you set the oscilloscope data

acquisition modes.

•The [Display] key on the front panel lets you set the waveform

persistence options and the grid type and grid intensity.

8 3000 X-Series Oscilloscopes Advanced Training Guide

1Getting Started

•The [Intensity] key and the Entry knob lets you set the desired

signal brightness.

Horizontal Controls

aTurn the large knob in the Horizontal control section clockwise and

counter- clockwise to control the time/div setting of the horizontal

axis.

Observe the changes in the displayed signal. The current timebase

setting is displayed at the top of the display on the status line.

bTurn the small knob in the horizontal control section to move the

trigger point (solid orange triangle) from the reference point (hollow

orange triangle).

cPress the [Horiz] key to display the Horizontal menu. Note the various

Time Modes of Normal, Roll, and XY. Also notice the Zoom mode

softkey.

dPress the (zoom) key to quickly turn on the zoom mode. This

split- screen mode shows the big picture on top and an expanded

view on the bottom. Turn the large timebase knob counter- clockwise

to make the window on top larger.

Getting Started 1

3000 X-Series Oscilloscopes Advanced Training Guide 9

Vertical Controls

•Turn the large knobs in the Vertical section to control the V/div setting

for each analog channel. The V/div setting is displayed in the upper left

hand corner of the status line at the top of the display.

Color coding matches analog channel inputs, vertical control knobs, and

waveform colors.

•Press the [1] key to display the channel 1 menu. Press again to turn the

channel on and off.

•Turn the small knobs to control the vertical offset position of the

waveform, moving the ground level up or down.

Trigger Controls

•Turn the Trigger Level knob to move the trigger level up and down. The

trigger level is displayed while it is adjusted. If the trigger level is above

or below the signal and the oscilloscope is in Auto trigger mode, the

oscilloscope will force a trigger and display an acquisition (waveform).

Auto trigger mode is useful when unsure of the exact waveform because

forced acquisitions are displayed, making it easy to better configure the

oscilloscope’s settings and trigger level.

•Press the [Mode/Coupling] key in the Trigger controls section to view the

Trigger Mode and Coupling Menu selections and to set trigger holdoff.

10 3000 X-Series Oscilloscopes Advanced Training Guide

1Getting Started

•Press and hold the Mode softkey to read the built- in help about the

Auto and Normal trigger modes.

Tools Controls

•Press the [Utility] key to access the I/O ports, file explorer, options,

service information, and the “Quick Action” key function settings.

•Press the [Quick Action] key to perform one of the quick action functions

that can be mapped to this key.

•Press the [Analyze] key to set trigger levels, measurement threshold

levels, video trigger auto setup and display, or the mask testing

application options.

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