Tektronix TDSUSB2 Primary User

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TDSUSB2

ZZZ

Universal Serial Bus Measurements Package

Online Help

*P077001507*

077-0015-07

TDSUSB2 Universal Serial Bus Measurements Package

ZZZ

Online Help

www.tektronix.com

077-0015-07

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Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P. O . B o x 5 0 0 Beaverton, OR 97077 USA

For p roduct information, sales, service, and technical support:

In North America, call 1-800-833-9200. Worldwide, visit www.tektronix.com to ﬁnd contacts in your area.

Table of Contents

General Safety Summary

General Safety Summary .......................................................................................... 1

Introduction

Welcome to the TDSUSB2 Universal Serial Bus Measurements Package................................... 3

Online He

Printing from the Online Help..................................................................................... 5

Conventions.......... ................................ ................................ ............................... 5

Related Documentation ............................... ................................ ............................. 6

Feedback.................. ................................ .................................. ......................... 7

Getting Started

Introduction and Product Description ... ................................ ................................ ......... 9

Compatibility... . . .... ..... .... . .... ..... .... . .... ..... .... . .... ..... .... . .... ... . . .... . .... .... . .... . .... .... . .... . 10

Requirements and Restrictions................................................................................... 10

Accessories............................... .................................. ................................ ........ 10

Installation

Deskewing

lp and Related Documentation ......... ................................ ............................... 4

Setting up the Instrument to Take Measurements ... . .... ... . . .... . .... ..... .... . .... . .... .... . .... . .... .. 12

Installing the Application ... ..... .... . .... . .... .... . .... . .... ... . . .... . .... ..... .... . .... . .... ..... .... . .... . 12

Deskewing the Probes and Channels ............... ................................ ........................ 12

Deskewing Probes and Channels on the supported Instruments......................................... 13

Table of Contents

Operating Basics

About Basic Operations

About Basic Operations.............. .................................. ................................ ...... 19

Application Interface ......................................................................................... 19

Application Interface Menu Controls....................................................................... 20

Basic Instrument Functions

Using Basic Oscilloscope Functions.. . .... . .... . .... . .... ..... ..... .... . .... . .... . .... . .... ..... ..... .... . . 21

Minimizing and Maximizing the Application ................... .................................. ........ 21

Application Directories and File Names . ................................ .................................. 22

File Name Extensions ............ ................................ .................................. .......... 22

Returning to the Application ................................................................................ 23

Exiting the Application.... . .... .... . .... . .... ..... ... . . .... . .... . .... .... . .... . .... ..... .... . .... . .... . .... .. 23

Setting up the Software to take Measurements

Description of the Test Fixture .............................................................................. 23

Setting Up the Device Details .. . .... ... . . .... . .... .... . .... . .... .... . .... . .... .... . .... . .... .... . .... . .... .. 24

TDSUSB2 Universal Serial Bus Measurements Package i

Table of Contents

Setting Up the Software ..... ... . . .... . .... . .... ..... ..... .... . .... . .... ..... ..... .... . .... . .... . .... . .... .... 25

Setting Preferences . .... . .... ..... .... . .... . .... ... . . .... . .... . .... ..... .... . .... . .... ... . . .... . .... . .... ..... 25

Table of Measurements and Options...................... .................................. ................ 28

Selecting a Measurement ...................... ................................ .............................. 30

Signal Quality Check... . .... . .... ..... ... . . .... . .... . .... ..... ..... .... . .... . .... ..... ..... .... . .... . .... . ... 32

Inrush Current Check....... ................................ ................................ .................. 33

Droop Measurement.......................................................................................... 34

Receiver Sensitivity Measurement.......................................................................... 35

Chirp Measurement........................................................................................... 36

Monotonic Property .......................................................................................... 37

Conﬁguring a Measurement ................................................................................. 38

Conﬁgure Limits........ ................................ ................................ ...................... 38

Conﬁguring Signal Quality Measurements .... . .... . .... ... . . .... . .... ..... .... . .... . .... ..... .... . .... . .. 39

Conﬁguring Inrush Current Measurements ............ .................................. .................. 40

Conﬁguring Droop Measurements.......................................................................... 40

Conﬁguring Receiver Sensitivity Measurements.. ..... ... . . .... . .... . .... ... . . .... . .... . .... . .... .... . ... 41

Conﬁguring Chirp Measurement.. ................................ ................................ .......... 42

Conﬁguring Resume Measurement......................................................................... 44

Conﬁguring Suspend Measurement ........................................................................ 45

Conﬁguring Reset from Suspend Measurement ........................... ................................ 46

Conﬁguring Packet Parameter Measurement .............................................................. 46

Packet Parameter Measurement............................................................................. 48

Suspend Measurement ....................................................................................... 4

Resume Measurement........ ................................ .................................. .............. 50

Reset from Suspend Measurement.......................................................................... 51

Reset from High Speed Measurement...................................................................... 52

Taking Measurements

Acquiring Data................................................................................................ 52

Control Menu Options ....................................................................................... 54

Viewing Results............................................................................................... 55

Report Generation

Generating Reports ........................................................................................... 59

Viewing Reports .. .................................. ................................ .......................... 61

TSV File Generator................... ................................ ................................ ........ 62

Saving and Recalling Setups

How to Save and Recall a Setup .. ................................ .................................. ........ 63

Saving a Setup ........ ................................ ................................ ........................ 64

Recalling a Saved Setup ... .... . .... . .... . .... . .... .... . .... . .... . .... . .... ..... ... . . .... . .... . .... ..... ... . . 65

Recalling the Default Setup. . .... ... . . .... . .... . .... ..... .... . .... . .... ... . . .... . .... . .... ..... .... . .... . .... 66

Recently Saved Setup .......... ................................ ................................ .............. 67

Recently Recalled Setup ..................................................................................... 67

ii TDSUSB2 Universal Serial Bus Measurements Package

Tutorial

Introduction to the Tutorial....................................................................................... 69

Starting the Application. .................................. ................................ ........................ 69

Recalling a .tsv File .. .... . .... . .... ..... .... . .... . .... .... . .... . .... ... . . .... . .... ..... .... . .... . .... ..... .... . ... 69

Taking a Full Speed Signal Quality Measurement . .... . .... . .... ..... ... . . .... . .... . .... .... . .... . .... ..... ... 70

Taking a Low Speed Inrush Current Measurement .. ................................ .......................... 71

Taking a High Speed Signal Quality Measurement...... ................................ ...................... 72

Taking a Low Speed Signal Quality Measurement . . .... .... . .... . .... . . .... . ..... . .... . ..... . .... . ..... . .... . 73

Application Examples

About Application Examples....................... ................................ .............................. 75

Full Speed Signal Quality Tests for Downstream Testing

Specifying the Equipment-Full Speed Signal Quality Downstream Tests.............................. 75

Typical Equipment Setup-Full Speed Signal Quality Downstream Tests . .... ..... .... . .... . .... .... . . 75

Selecting

Viewing Results-Full Speed Signal Quality Tests. .... .... . .... . .... .... . .... . .... .... . .... . .... .... . .... . 78

Generating Reports-Full Speed Signal Quality Tests ..................................................... 79

Droop Test for Ports of Hub

Specifying the Equipment-Low Speed Droop Tests ...................................................... 79

Typical Equipment Setup-Low Speed Droop Tests ............. .................................. ........ 79

Selecting and Conﬁguring Measurements-Droop Tests .................................................. 82

Viewing Results-Droop Tests................................................................................ 82

Generating Reports-Droop Tests ............................................................................ 83

Full Speed Signal Quality Tests for Upstream Testing

Specifying the Equipment-Full Speed Signal Quality Tests for Upstream Testing.................... 83

Typical Equipment Setup-Full Speed Signal Quality Tests for Upstream Testing... . .... .... . .... . ... 83

Selecting and Conﬁguring Measurements-Full Speed Signal Quality Tests for Upstream Testing.. 84

Viewing Results-Full Speed Signal Quality Tests for Upstream Testing .... . .... ..... ..... .... . .... . .. 86

Generating Reports-Full Speed Signal Quality Tests for Upstream Testing ..................... ...... 86

Inrush Current Test for a device

Specifying the Equipment-Full Speed Inrush Current Test .......... ................................ .... 86

Typical Equipment Setup-Inrush Current Test............................................................. 87

Selecting and Conﬁguring Measurements-Inrush Current Test.. ................................ ........ 89

Viewing Results-Inrush Current Test....................................................................... 89

Generating Reports-Inrush Current Test ................................................................... 90

View Inrush Measurements Report in CSV format ................... .................................. .. 91

High Speed Report in Tektronix Format ................................................................... 92

View Procedural Steps from the Application .............................................................. 92

View Waveform Plot for Signal Quality Check High Speed Devices. . .... . .... . .... . .... . .... . .... . ... 95

View Chirp Measurement Results .......................... ................................ ................ 96

Signal Quality Tests for High Speed Devices

Specifying the Equipment-Signal Quality Tests for High Speed Devices for Upstream Testing .... 96

and Conﬁguring Measurements-Full Speed Signal Quality Tests .... . .... .... . .... . .... ... . 76

Table of Contents

TDSUSB2 Universal Serial Bus Measurements Packa ge iii

Table of Contents

Typical Equipment Setup-Signal Quality Tests for High Speed Devices for Upstream Testing ... .. 97

Selecting and Conﬁguring Measurements-Signal Quality Tests for High Speed Devices for Upstream

Viewing Results-Signal Quality Tests for High Speed Devices for Upstream Testing.. . . .... . .... . 101

Generating Reports-Signal Quality Tests for High Speed Devices for Upstream Testing... . .... . . 102

Packet Parameter Measurement

Specifying the Equipment-Packet Parameter Measurement ........................................... 102

Selecting and Conﬁguring Measurement-Packet Parameter Measurement .................. ........ 102

Viewing Results-Packet Parameter Measurement............................. .......................... 104

Generating Reports-Packet Parameter Measurement................................................... 105

Resume Measurement

Specifying the Equipment-Resume Measurement ................ ................................ ...... 108

Typical Equipment Setup-Resume Measurement ......... ................................ .............. 109

Selecting and Conﬁguring Measurement-Resume .................... .................................. 110

Viewing Results-Resume Measurement............................................ ...................... 111

Generating Reports-Resume Measurement.... ................................ .......................... 111

Reset from Suspend Measurement

Specifying the Equipment-Reset from Suspend Measurement ................ ........................ 113

Typical Equipment Setup-Reset from Suspend Measurement ........................... .............. 113

Selecting and Conﬁguring Measurement-Reset from Suspend Measurement ....................... 115

Viewing Results-Reset from Suspend Measurement ................................................... 115

Generating Reports-Reset from Suspend Measurement.............. ................................ .. 117

Suspend Measurement

Specifying the Equipment-Suspend Measurement...................................................... 118

Typical Equipment Setup-Suspend Measurement....................................................... 119

Selecting and Conﬁguring Measurement-Suspend Measurement ..................................... 120

Viewing Results-Suspend Measurement ................................................................. 120

Generating Reports-Suspend Measurement.............................................................. 122

Reset From High Speed Measurement

Specifying the Equipment-Reset from High Speed Measurement .................................... 123

Typical Equipment Setup-Reset from High Speed Measurement ........... .......................... 124

Selecting and Conﬁguring Measurement-Reset from High Speed Measurement ................... 126

Viewing Res

Generating Reports-Reset from High Speed Measurement ............................................ 128

Chirp Measurement

Specifying the Equipment-Chirp.... ................................ .................................. .... 129

Typical Equipment Setup-Chirp................................. ................................ .......... 130

Selecting and Conﬁguring Measurement-Chirp............. ................................ ............ 133

Viewing Results-Chirp ..................................................................................... 133

Generating Reports-Chirp ................................................................................. 135

View High Speed Measurement Plug-Fest Speciﬁc Format . ................................ .......... 138

View Full Speed Measurements Report in Plug-Fest Speciﬁc Format................................ 139

Testing....................................... .................................. ............................ 99

ults -Reset from High Speed Measurement............. ................................ .. 126

iv TDSUSB2 Universal Serial Bus Measurements Package

View Signal Quality Check Eye Diagram.. . .... . .... .... . .... . .... ..... .... . .... . .... ..... .... . .... . .... 140

View Signal Quality Check Waveform Plot . . .... . .... ... . . .... . .... ..... .... . .... . .... ..... .... . .... . .. 141

View the Report for Full Speed Measurements .............................................................. 142

View Inrush Results Details .................................. ................................ .................. 142

View Waveform Plot for Full Speed Signal Quality Check Measurements ..... .... . .... . .... ..... ... . . .. 143

View Signal Quality Check Details.. . .... . .... ..... ..... .... . .... . .... . .... ..... .... . .... . .... . .... . .... .... . . 143

View Eye Diagram for F

View Eye Diagram For High Speed Measurements ......................................................... 144

View Waveform Plot For High Speed Measurements ... ................................ .................... 145

View Signal Quality Check Results Details . . .... .... . .... . .... . .... . .... .... . .... . .... . .... . .... .... . .... . .. 146

View Sample Report File for Inrush Current Check ........................... .............................. 147

R-GPIB Commands

About the R-GPIB Program.. ................................ ................................ .................. 149

R-GPIB Reference Materials ................................................................................... 149

Introduction to R-GPIB command

Guidelines to R-GPIB Programming.......................................................................... 150

Launching the Application using R-GPIB .......... ................................ .......................... 150

Variable: Value Command...................................................................................... 151

Variable: Value TDSUSB2 Command Arguments and Queries- Application ............................ 151

Variable: Value TDSUSB2 Command Arguments and Queries- Sequencer.............................. 151

Variable: Value TDSUSB2 Command Arguments and Queries-Conﬁrm Waveform...... .............. 152

Variable: Value TDSUSB2 Command Arguments and Queries- Save/Recall ............................ 152

Variable: Value TDSUSB2 Command Arguments and Queries- Report Generation .................... 153

Variable: Value TDSUSB2 Command Argume

Sample Program ................................................................................................. 157

Table of Contents

ull Speed Signal Quality Check Measurements ................. ................ 144

s............................................................................ 149

nts and Queries- Results ................................. 153

Reference

Shortcut Keys .................. ................................ .................................. ................ 165

USB2.0 Speciﬁcations .. ................................ .................................. ...................... 165

Error Codes and Warnings........................................ ................................ .............. 168

Settings for the supported Instruments .. . . .... . .... . .... ... . . .... . .... . .... . .... .... . .... . .... . .... . .... .... . . 176

Parameters

About Application Parameters ............................................................................ 183

File Menus

File Menu Parameters ................................................................................. 184

Save and Recall Menu Parameters ............................. .................................. .... 184

Preferences Parameters................................................................................ 185

Measurement Menus

Measurement Menus................................................................................... 185

Measurement Parameters ..................... .................................. ...................... 185

Conﬁgure Menus

TDSUSB2 Universal Serial Bus Measurements Packa ge v

Table of Contents

Results Menu

Utilities Menus

Help Menu

Control Menu

Measurement Algorithms

About Measurement Algorithms .................................. ................................ ........ 192

Cross-Over Voltage for Low Speed and Full Speed Signals ......................... .................. 193

Cross-Over Voltage for High-Spe

Signal Rate ............ ................................ ................................ ...................... 196

EOP Width Calculation .................................................................................... 197

Consecutive and Paired Jitter .... . .... . .... . .... . .... . .... . .... .... . .... . .... . .... . .... . .... . .... ... . . .... . 197

Eye Diagram .............. .................................. ................................ ................ 199

Eye Violation................................................................................................ 199

Inrush Current............................................................................................... 199

Droop Test ................................................................................................... 20

Receiver Sensitivity Test................................................................................... 202

Chirp Test for a Device..................................................................................... 203

Host Chirp Test.............................................................................................. 203

Monotonic Property Test......................... ................................ .......................... 204

Rising Edge Rate.......... ................................ .................................. ................ 204

Falling Edge Rate .... . .... . .... . .... .... . .... . .... . .... . .... .... . .... . .... . .... . .... .... . .... . .... . .... . .... 205

Packet Parameter............................................................................................ 205

Resume....................................................................................................... 206

Suspend ...................................................................................................... 207

Reset from Suspend ...................... ................................ ................................ .. 208

Reset from High Speed..................................................................................... 209

Equipment Setup for Tests

Conﬁgure Menu .............................. ................................ .......................... 187

Conﬁgure Signal Quality Measurements Parameters .... ..... ..... .... . .... . .... . .... . .... . .... . .. 187

Conﬁgure Inrush Current Measurement Parameters ............................................... 188

Conﬁgure Droop Test Parameters........................ .................................. .......... 189

Conﬁgure Receiver Sensitivity ... . .... ..... .... . .... . .... . .... ..... .... . .... . .... . .... ..... .... . .... . 189

Conﬁgure Suspend, Reset from High Speed, Resume, Reset from Suspend .................... 189

Conﬁgure Packet Parameter .......................................................................... 190

Conﬁgure Chirp ........................................................................................ 190

Results Menus.......................................................................................... 191

Utilities Menus .... . .... . .... . .... . .... . .... . .... . .... ..... ..... ..... ..... .... . .... . .... . .... . .... . .... . 191

Deskew.................. ................................ .................................. .............. 191

Report Generator Menu Parameters ............... ................................ .................. 191

TSV File Generator Menu Parameters................................... ............................ 192

Help Menu .......................... ................................ .................................. .. 192

Control Menu Parameters... ................................ ................................ .......... 192

ed Signals......................................... .................... 194

vi TDSUSB2 Universal Serial Bus Measurements Package

Glossary

Glossary .................... ................................ ................................ ...................... 233

Table of Contents

Low Speed Downstream Signal Quality Host Equipment Setup ... . .... . .... ... . . .... . .... ... . . .... . . 209

Low Speed Signal Quality for HUB Downstream . . .... ..... ..... .... . .... . .... . .... . .... .... . .... . .... 210

Full Speed Sig

Full Speed Downstream Host Equipment Setup ........................ ................................ 212

Full Speed Upstream Signal Quality Setup . ..... .... . .... . .... . .... . .... ..... ..... .... . .... . .... . .... . .. 213

High Speed Device Signal Quality Setup .... . .... . .... .... . .... . .... .... . .... . .... ..... .... . .... . .... ... 215

Chirp Test Equipment Setup........................... ................................ .................... 215

Receiver Sensitivity Setup . .... . .... . .... ... . . .... . .... . .... . .... .... . .... . .... . .... . .... .... . .... . .... . ... 217

Inrush set

Resume Test Equipment Setup .......................... ................................ .................. 219

Reset from Suspend Test Equipment Setup.............................. ................................ 220

Suspend Test Equipment Setup............................................................................ 221

Reset from High Speed Test Equipment Setup ............................ .............................. 222

Packet Parameter Test Equipment Setup................................................................. 223

nal Quality HUB Downstream Setup. .... . .... .... . .... . .... ... . . .... . .... .... . .... . .... 211

up.................. ................................ ................................ ................ 217

Index

TDSUSB2 Universal Serial Bus Measurements Packa ge vii

Table of Contents

viii TDSUSB2 Universal Serial Bus Measurements Package

General Safety Summary General Safety Summary

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as speciﬁed.

Only qualiﬁed personnel should perform service procedures. While using this product, you may need to access other parts of the system.

Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system .

To avoid Fire and Personal Injury

Use Proper Power Cord. Use only the power cord speciﬁed for this product and certiﬁed for the country

of use.

Connect

connecting the probe to the circuit under test. Disconnect the probe input and the probe ground from the circuit under test before disconnecting the probe from the measurement oscilloscope.

Ground the Product. This product is indirectly grounded through the grounding conductor of the

mainframe power cord. To avoid electric shock, the grounding conductor must be connected to earth groun is properly grounded.

Observe All Terminal Ratings. To a void ﬁre or shock hazard, observe all ratings and markings on the

product. Consult the product manual for further ratings information before making connections to the product.

Use Proper AC Adapter. Use only the AC adapter speciﬁed for this product.

Use Proper Fuse. Use only the fuse type and rating speciﬁed for this product.

Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected

yqualiﬁed service personnel.

Do Not Operate in Wet/Damp Conditions.

and Disconnect Properly. Connect the probe output to the measurement oscilloscope before

d. Before making connections to the input or output terminals of the product, ensure that the product

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

TDSUSB2 Universal Serial Bus Measurements Packa ge 1

General Safety Summary General Safety Summary

Terms in this Manual

These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in damage to t his product

or other property.

Terms on the Product

These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the marking.

WARNING indicates an injury hazard not immediately accessible as you read the marking.

CAUTION

indicates a hazard to property including the product.

Symbols on the Product

The following symbol(s) may appear on the product:

2 TDSUSB2 Universal Serial Bus Measurements Package

Introduction Welcome to the TDSUSB2 Universal Serial Bus Measurements P ackage

Welcome to the TDSUSB2 Universal Serial Bus Measurements Package

TDSUSB2 Universal Serial Bus Measurements Package is a Sun Java-based application that runs on the supported instruments connected to a PC. You can use the application software with the compliance test ﬁxture to take the following measurements:

Signal Quality

Inrush

Droop

supported by the test ﬁxture only)

Drop (

Receiver Sensitivity

Impedance Measurement using Time Domain Reﬂectometry (TDR), supported by the application

only with the test ﬁxture

Chirp measurements

Packet Parameter

Resume

Reset from Suspend

eset from High Speed

Suspend

The application runs on the oscilloscope and displays on the lower part of the screen. The oscilloscope application runs on the upper part of the screen.

TDSUSB2 Universal Serial Bus Measurements Packa ge 3

Introduction Online Help and Related Documentation

What do you want to do?

Online Help and Related Documentation (see page 4)

Introduction and Product Description (see page 9)

Installing the Application (see page 12)

TIP. To return to the Table of Contents, select Help Topics from the Help Topic Menu.

Online Help and Related Documentation

You can access the information on how to operate the application and the oscilloscope through the following related documents and online help.

Click Start > Programs > TekApplications > TDSUSB2 > Help to access the Online Help.

Click St version of the Online Help.

Click S Test procedure.

Click Test procedure.

Clic Test procedure.

Clic Reference Card.

art > Programs > TekApplications > TDSUSB2 > Help (PDF Version) to access the PDF

tart > Programs > TekApplications > TDSUSB2 > Host Test Procedure to access the Host

Start > Programs > TekApplications > TDSUSB2 > Hub Test Procedure to access the Hub

k Start > Programs > TekApplications > TDSUSB2 > Device Test Procedure to access the Device

k Start > Programs > TekApplications > TDSUSB2 > Quick Reference Card to access the Quick

Printing from the Online Help

Some online help topics have color in the examples of the displayed application. If you want to print this type of topic on a monochrome printer, some information may not print because of certain colors. Instead, you Online Help. You can ﬁnd the ﬁle in the Documents directory o n the Optional Applications Software on Windows-Based Oscilloscopes DVD.Theﬁgures of application menus in the PDF ﬁle are gray scale and all of the information prints.

should print the topic from the PDF (portable document format) ﬁle that corresponds to the

Conventions

Online help uses the following conventions:

Refers to the software p art of the TDSUSB2 Universal Serial Bus Measurements Package as the

TDSUSB2 application or as the application.

When steps require a sequence of selections using the application interface, the ">" delimiter marks

each transition between a menu and an option. For example, one of the steps to recall a setup ﬁle

would appear as File > Recall.

Unit under test (UUT) refers to the USB2.0 device under test, hub under test, host under test, and

port under test.

SOF refers to the Start of Frames exchanged between the host controller and the device when the

device is connected to the host and enumerated by the test mode software.

TDSUSB2 Universal Serial Bus Measurements Package 5

Introduction Related Documentation

Feedback

Tektronix values your feedback on our products. To help us serve you better, please send us your suggestions, ideas, or comments about your oscilloscope.

Direct your feedback via email to

techsupport@tektronix.com or FAX at (503) 627-5695

and include the following information. Please be as speciﬁc as possible.

General information:

Instrumen

Probes used

Your name, company, mailing address, phone number, FAX number

Please indicate if you would like to be contacted by Tektronix about your suggestion or comments

Application speciﬁc information:

Software version number

Descri

If possible, save the oscilloscope and application setup ﬁles as .set ﬁles

If possible, save the waveform on which you are performing the measurement as a .wfm ﬁle

Once you have gathered this information, you can contact technical support by phone or through e-mail. If using e-mail, be sure to enter in t he subject line "TDSUSB2 Problem," and attach the .set and .wfm ﬁles.

TIP. To include screen shots from the oscilloscope menu bar, select File> Export Setup> Image tab or File

ve > Screen Capture. Save the screen shot in the default directory or you can choose a directory of

>Sa your choice. If you want the screen shots in color, select Edit> Copy setup> Images tab or select File > Save > Screen Capture and select Options to get the Screen Capture Save Option dialog box. Select the Color, Full Screen and the Normal option buttons. Select Copy. Copy the picture to any Paint editor software. You can then attach the ﬁle to your email (depending on the capabilities of your email editor).

t model number and hardware options, if any

ption of the problem such that technical support can duplicate the problem

TDSUSB2 Universal Serial Bus Measurements Packa ge 7

Introduction Feedback

8 TDSUSB2 Universal Serial Bus Measurements Package

Getting Started Introduction and Product Description

Introduction and Product Description

The TDSUSB2 Universal Serial Bus Measurements package, consists of a Java-based application and a comprehensive test ﬁxture. You can use the application software with the compliance test ﬁxture to take the followin

Signal Quality

Inrush

Droop

Drop (supported by the test ﬁxture only)

Receiver Sensitivity

g measurements:

Impedanc

only with the test ﬁxture

Chirp me

Packet Parameter

Resume

Reset from Suspend

Reset from High Speed

Suspend

pplication performs tests that measure the test signals for USB2.0 compliance, displays eye diagrams

The a and plots, displays the results as a summary or as details, and generates reports in different formats.

e Measurement using Time Domain Reﬂectometry (TDR), supported by the application

asurements

What do you want to do?

Accessories (see page 10)

Compatibility (see page 10)

equirements and Restrictions

Installing the Application (see page 12)

(see page 10)

TDSUSB2 Universal Serial Bus Measurements Packa ge 9

Getting Started Compatibility

Compatibility

For information on oscilloscope compatibility1, refer to the Optional Applications Software on Windows-Based Oscilloscopes Installation Manual, Tektronix part number 071-1888-XX. The manual is

also availab should be at least ± 8 volts. For High Speed testing, the dynamic range should be ± 2 volts.

For a current

le as a PDF ﬁle. The dynamic range of the probes used for Low Speed and Full Speed testing

list of compatible instruments, see the Software and Drivers category on the Tektronix Web site.

Requirements and Restrictions

You must install Java Run-Time Environment V1.4.2_02 on the supported oscilloscope.

The application uses the Math1 channel for Low Speed, Full Speed, and Single-ended High Speed Signal Quality modes of operation. You will lose any information that you have stored in the Math1 channel.

You cannot restore the oscilloscope settings if you select File > Exit from the application.

Accessories

The application include s the following standard accessories:

Optional Application Software on Windows-Based Instruments DVD

Optional Application Software on Windows-Based Instruments Installation Manual

TDSU

TDSUSBF USB2.0 Compliance Test Fixture Instructions

TDSUSBF USB2.0 Compliance Test Fixture (Revision B)

Optional Accessories:

Signal Source (for Receiver Sensitivity Tests):

DTG5334 or DTG5274 or DTG5078 with a DTGM 21 Output module-Data G enerator

AWG5 000 ser ies (AWG 500 2) or AWG7000 series

TDSUSBF USB2.0 Compliance Test Fixture (Revision B)

X5 attenuators required when using AWG models.

SB2 Universal Serial Bus Measurements Package Reference

10 TDSUSB2 Universal Serial Bus Measurements Package

Getting Started Accessories

Voltage Probes:

HP62481, P6330- High Bandwidth Differential Probe

H P6245 or P6243- High Bandwidth Single-ended Active Probe

The P6248 probe is approved for compliance testing, higher performance differential probes may be used for design applications. It is recommended to have an attenuation of divide by 1 for better results.

For DPO7000 series:

TDP1500 or TDP3500

TAP1500

P6248, P6330, or P6245 (these require TPA-BNC Adapter on DPO7000 series models)

2SMAcabl

es with SMA connectors for single-ended HS Signal Quality measurements

Current Probes:

TCP0030

TCP202

(requires TPA-BNC Adapter on DPO7000 series models)

TDR Measurements (for I mpedance Measurement test):

Tektronix DSA8000 Sampling Oscilloscope with Time Domain Reﬂectometer (TDR) Sampling

Module

Deskew Fixture: for supported instrument-Probe Calibration and Deskew Fixture, Tektronix part number (067-0405-XX)

6-inch AB Cable with USB-IF compliance logo tag

NOTE. Any references to standard cable or standard length of cable in all TDSUSB manuals refers to "6-inch AB Cable (standard USB cable with USB-IF compliance logo tag)", and references to USB cablerefersto"1-metreUSBcable”.

TDSUSB2 Universal Serial Bus Measurements Packa ge 11

Getting Started Setting up the Instrument to Take Measurements

Setting up the Instrument to Take Measurements

To set up the oscilloscope, follow these steps:

1. You must power on the oscilloscope for twenty minutes before you can start to take measurements.

2. You must run the compensation signal path on the oscilloscope.

3. You must make sure that the default factory setup is recalled before you start using the application in

the oscilloscope. To do so, push the recall default setup button on the front-panel of the oscilloscope to recall the default factory settings.

4. You should always use calibrated probes and degauss the current probes.

Recommended Instruments and Probes

Forinformationonrecommendedinstrumentsandprobes,refertotheOptional Application Software on Windows-Based Oscilloscopes Installation Manual.

Installing the Application

Refer to the Optional Applications Software on Windows-Based Instruments Installation Manual for the following information:

Installing an application

Applying a new label

Enabling an application

nloading updates from the Tektronix Web site

Dow

You ca n ﬁnd a PDF (portable document format) ﬁle of this document in the Documents directory on the

tional Applications Software on Windows-Based Instruments DVD. The DVD booklet only contains

information on installing the application from the DVD and on how to apply a new label.

Deskewing the Probes and Channels

To ensure accurate measurements, you must des kew the probes before you take measurements from your unit under test. The deskew process is where the oscilloscope adjusts the relative delay between the signals to accurately time correlate the displayed waveforms.

The application includes an automated deskew utility that you can use to deskew any pair of oscilloscope channels.

12 TDSUSB2 Universal Serial Bus Measurements Package

Getting Started Deskewing Probes and Channels on the supported Instruments

NOTE. It is recommend that you use the deskew ﬁxture speciﬁed in the accessories section to perform deskew. The deskew source can be the built-in probe compensation signal in the oscilloscope or an external sign

NOTE. The oscilloscope has a deskew range of 50 n s.

al source.

Deskewing Probes and Channels on the supported Instruments

To deskew probes and channels on the supported instruments, follow these steps:

1. Connect the probes to Ch1 and Ch2 on the oscilloscope.

2. Connect the probe compensation signal to the deskew ﬁxture. You can use the probe compensation

signal from the oscilloscope as the source for the deskew ﬁxture.

3. Follow the on-screen prompts for the deskew operation with an external source.

The following ﬁgure shows signals before performing the deskew procedure with a single edge.

TDSUSB2 Universal Serial Bus Measurements Packa ge 13

Getting Started Deskewing Probes and Channels on the supported Instruments

4. To start the application from a supported oscilloscope, select File > Run Application > USB2.0 Test Package from the menu bar of the oscilloscope.

5. Select Utilities> Deskew.

6. Set the channel Source in the From area to Ch1. The Source waveform is the reference point to which

the remaining channels are deskewed.

7. Set the channel Source in the To area to Ch2, to deskew the channel.

8. Select the Reference Level for Ch1 and set the reference value. The reference level is the percentage

level of the waveform from which to take the edges to deskew.

9. Select the Reference Level in the To area for Ch2 and set the reference value.

10. Select the Hysteresis in the From area for Ch1. Hysteresis

level in the waveform.

11. Select the Hysteresis in the To area for Ch2 and set the hysteresis value.

elect the Slope, Rise or Fall, on which to perform the deskew operation.

12.S

13. Select the number of edges used for deskew.

(see page 18) helps to ignore the noise

14 TDSUSB2 Universal Serial Bus Measurements Package

Getting Started Deskewing Probes and Channels on the supported Instruments

14. To start the deskew utility, select Utilities> Perform Deskew and conﬁrm the operation.

15. Without changing the From: Ch1 channel, deskew the remaining channels.

The next ﬁgure shows the results after performing the deskew operation with a single edge. The reference level is set to 50% for Ch1 and Ch2, the hysteresis is set to 5%, the number of edges is set to 1, and the slope is set to the rising edge.

NOTE. The probe compensation signals varies from 0.8to1volt(forallsupportedTDSinstruments) and from 0.3 traditional oscilloscope. Set the Reference level and the Hysteresis level appropriately so that the Ref level is at the middle of the swing on the signal.

5 to 1 volt (for all supported DPO instruments) rather than swinging from 0 to 1 volt in a

To perform the deskew operation with an external source, follow these steps:

1. Co

2. Connect an external source to the deskew ﬁxture.

3. Follow the instructions of the Probe Calibration and Deskew ﬁxture (Tektronix part number:

TDSUSB2 Universal Serial Bus Measurements Packa ge 15

nnect the probes to Ch1 and Ch2 on the oscilloscope.

067-0405-xx) to make the connections.

Getting Started Deskewing Probes and Channels on the supported Instruments

4. Set up the oscilloscope as follows:

Use the Horizontal Scale knob to set the oscilloscope to an acquisition rate so that there are two or more samples on the deskew edge.

Use the Ve rtical Scale and Position knobs to adjust the signals to ﬁll the display without missing any part of the signals.

Set the Record Length so that there are more samples for the edges in the acquisition. It is recommended that you set the record length to 25000 points.

5. To start the application from a supported oscilloscope, select File > Run Application > USB2.0 Test Package from the menu bar of the oscilloscope.

6. Select Utilities > Deskew.

7. Set the channel Source in the From area to Ch1. The remaining channels are deskewed to the Source

waveform, which is the reference point.

8. Set the channel Source in the To area to Ch2, the channel to be deskewed.

9. Select the Reference Level for Ch1. The reference level is the percentage level of the waveform from

whichtotaketheedgestodeskew.

10. Select the Reference Level in the To a r ea for Ch2 and set the reference value.

11. Selec

12. Sele

13. Select the Slope, Rise or Fall, on which to perform the deskew operation.

14. Select the number of edges used for deskew.

15. To start the deskew utility, select Utilities> Perform Deskew and conﬁrm the operation.

16. Without changing the From: Ch1 channel, deskew the remaining channels.

17. The setup is an acquisition of a square signal at 100 KHz, with the Record length set to 25000 points to

t the Hysteresis in the From area for Ch1. Hysteresis

level in the waveform.

ct the Hysteresis in the To area for Ch2 and set the hysteresis value.

achieve the sample resolution of 1.6 ns.

The next ﬁgure shows an example of a deskew setup.

(see page 18) helps to ignore the noise

16 TDSUSB2 Universal Serial Bus Measurements Package

Getting Started Deskewing Probes and Channels on the supported Instruments

18. Set the Reference levels for Ch1 and Ch2 in the application to 50%, the hysteresis to 10%, the number of edges to 4, and the type to rising edge.

The next ﬁgure shows the display after performing the deskew for the multiple edge.

TDSUSB2 Universal Serial Bus Measurements Packa ge 17

Getting Started Deskewing Probes and Channels on the supported Instruments

19. The zoomed section of the waveform available on the lower part of the screen shows the results of the deskew operation clearly. You will see that after performing the deskew operation, the skew is automa

tically removed.

Hysteresis

Hysteresis indicates the noise level in the waveform.

18 TDSUSB2 Universal Serial Bus Measurements Package

+ 222 hidden pages

Tektronix TDSUSB2 Primary User

Specifications and Main Features

Frequently Asked Questions

User Manual

General Safety Summary General Safety Summary

General Safety Summary

Introduction Welcome to the TDSUSB2 Universal Serial Bus Measurements P ackage

Welcome to the TDSUSB2 Universal Serial Bus Measurements Package

Online Help and Related Documentation

Printing from the Online Help

Conventions

Related Documentation

Feedback

Getting Started Introduction and Product Description

Introduction and Product Description

Compatibility

Requirements and Restrictions

Accessories

Setting up the Instrument to Take Measurements

Installing the Application

Deskewing the Probes and Channels

Deskewing Probes and Channels on the supported Instruments