Tektronix RT-Eye User manual

RT-EyeR Serial Compliance and Analysis
Quick Start User Manual

www.tektronix.com

071-1769-00

Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its suppliers and are protected by
United States copyright laws and international treaty provisions.

Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical
Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the Commercial Computer Software −
Restricted Rights clause at FAR 52.227-19, as applicable.

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

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

RT-Eye is a registered trademark of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc.
14200 SW Karl Braun Drive or P.O. Box 500
Beaverton, OR 97077 USA

For product information, sales, service, and technical support:

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

Warranty 9(b)

Tektronix warrants that the media on which this software product is furnished and the encoding of the programs on the media will be free
from defects in materials and workmanship for a period of three (3) months from the date of shipment. If any such medium or encoding
proves defective during the warranty period, Tektronix will provide a replacement in exchange for the defective medium. Except as to the
media on which this software product is furnished, this software product is provided as is" without warranty of any kind, either express or
implied. Tektronix does not warrant that the functions contained in this software product will meet Customer’s requirements or that the
operation of the programs will be uninterrupted or error-free.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period. If
Tektronix is unable to provide a replacement that is free from defects in materials and workmanship within a reasonable time thereafter,
Customer may terminate the license for this software product and return this software product and any associated materials for credit or
refund.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES,
EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPLACE DEFECTIVE MEDIA OR REFUND
CUSTOMER’S PAYMENT IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS
WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE
POSSIBILITY OF SUCH DAMAGES.

Table of Contents

General Safety Summary iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Started

Key Features 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Compliance Modules 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ensuring Compatibility 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimum Required System Configuration 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Other Requirements and Restrictions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Accessories 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the Application 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting to the Device Under Test 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Typical Probing Configurations 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Calibrating the Oscilloscope and Probes 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Basics

Starting the RT-Eye Application 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Defining Preferences 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hiding and Returning the RT-Eye Application 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimizing and Maximizing the RT-Eye Application 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Docking and Undocking the RT-Eye Application 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Sequencing Controls 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Exiting the RT-Eye Application 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RT-Eye Application User Interface and Menu Structure 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Locating the Application Directories 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the RT-Eye Software

Setting Up the Application 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Wizard 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing Plot Summaries 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing Plot Details 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Zoom 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Cursors 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using a Grid 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Exporting Plots to Files 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printing Plots 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing Results 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Creating a New Report 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Generating a Report 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printing a Report 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Saving a Report 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing or Printing a Saved Report 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing a Saved Report 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printing a Saved Report without Viewing 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Logging Worst Case Waveforms 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using MyTest 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Saving MyTest 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Running MyTest 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Measurements and Using Autoset 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Plots 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuring Plots 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reconfiguring Plots and Using the Bit Error Locator 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuring Measurements 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

RT-Eye Quick Start User Manual

i

Table of Contents

Choosing Probe Types and Measurement Sources 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Source 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ref Levels 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Smart Gating 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clock Recovery 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Jitter 58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Population 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Config 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting Limits 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing the Current Limits 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Editing the Currently Displayed Limit File 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing a Summary of the Limits 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Saving the Limits File 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Limits 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Application Examples

Creating a Custom Compliance Module with Pass/Fail Limits 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting the RT-EyeApplication 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Running the Setup Wizard 65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Viewing the Results 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Summary of Displayed Results 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using a Mask 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Defining a Limits Module 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Creating a Compliance Report 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using MyTest 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Index

ii

RT-Eye Quick Start User Manual

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 or Personal Injury

Connect and Disconnect Properly. Do not connect or disconnect probes or test leads while they are connected to a

voltage source.

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

qualified service personnel.

Symbols and Terms

Terms in this Manual. These terms may appear in this manual:

General Safety Summary

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 this 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 may appear on the product:

CAUTION

Refer to Help

RT-Eye Quick Start User Manual

iii

General Safety Summary

iv

RT-Eye Quick Start User Manual

Preface

This manual describes how to set up and use the RT-Eye Serial Data Compliance and Analysis Application. Only basic
operations, presented as task-oriented procedures, are covered. For more detailed information, such as theory, concepts,
or algorithms, refer to the RT-Eye online help. For information about using specific, industry-standard modules, refer to the
documentation provided with the module. See Documentation below for additional, related information.

Documentation

To read about Use these documents

Preface

Installation, enabling an application,
software warranty and license agreement,
5 times free trial, downloading files from
the Tektronix site, available applications
and compatibility

Basic operations of the RT-Eye applica­tion

In-depth operation, user interface help,
GPIB commands, and measurement
algorithms

Other related documentation, such as
Method of Implementation (MOI) docu­ments and help files for specific com­pliance modules, Report Generator help,
and so on

*

To access the documentation that is installed on your instrument, click Start in the taskbar and select Programs > TekApplications.

Relevant Web Sites

Read the Optional Applications Software on a Windows­Based Oscilloscope Installation Manual.

Read the RT-Eye Serial Data Compliance and Analysis
Quick Start User Manual (this manual) provided in PDF
format on the Optional Applications Software on a
Windows-Based Oscilloscope CD.

Access the online help from the Help menu in the RT-Eye
application.

Read the relevant documents, provided in PDF files, on the

Optional Applications Software on a Windows-Based
Oscilloscope CD.

*

*

You may also find useful information about serial data standards on the following Web sites:

H www.Infinibandta.org

H www.pcisig.com

H www.T11.org

H www.tektronix.com/serial_data

RT-Eye Quick Start User Manual

v

Preface

Conventions Used in this Manual

The following icon is used throughout this manual:

Sequence

Step

1

The following conventions are used throughout the text of this manual:

H The terms RT-Eye application" or application" refer to the RT-Eye Serial Compliance and Analysis Application.

H The term oscilloscope" refers to any product on which this application runs.

H The term select" is a generic term that applies to the two mechanical methods of choosing an option: with a mouse or

with the Touch Screen.

H The term Compliance Module" refers to optional plug-in applications" from Tektronix used for compliance testing to

specific serial data standards.

H The term Limits Module" refers to a formatted text file used to specify user limits on mask geometry and measurement

boundary conditions for Pass/Fail testing.

H The term channel" is context dependent. It can refer to the transmit channel of the device under test or to an

oscilloscope channel.

H The term DUT" is an acronym for Device Under Test.

H User interface screen graphics are from a TDS6000 series oscilloscope; there may be minor differences in the displays

on other types of oscilloscopes.

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

between a menu and an option.

vi

RT-Eye Quick Start User Manual

Getting Started

This section contains information on key features, compliance modules, compatibility issues, installation, probing
configurations, and calibration.

Key Features

The RT-Eye Serial Compliance and Analysis Application is a software product that enhances the basic capabilities of some
Tektronix oscilloscopes that use Microsoft Windows operating systems. The RT-Eye application is a general analysis tool
that you can use to test, debug, and verify serial-data based designs.

You can use this application to do the following tasks:

H Select and configure many amplitude and timing measurements on serial data signals

H Quickly set up and take measurements using the Setup Wizard

H Select MyTest to execute a previously saved customized set of test conditions

H Conduct RT-Eye rendering and mask testing, Time Interval Error analysis, Rj/Dj (random jitter and deterministic jitter)

analysis, and display results as a Bathtub plot

Getting Started

H Display the results as eye diagram, histogram, spectrum, or bathtub curve plots

H Use the bit error locator feature to find mask failures on the waveform

H Perform Pass or Fail limits testing based on waveform masks and based on measurements that use Limits Modules

H Perform "plug-fest" level compliance tests for available compliance modules that test against a specific standard

H Save the statistical results to a file

H Save the worst case waveforms to files

H Generate reports

RT-Eye Quick Start User Manual

1

Getting Started

Using Compliance Modules

You can purchase separate compliance
modules for the RT-Eye application, such
as Infiniband, PCI Express, FB-DIMM,
and SAS. These are specific tools that
you can use to ensure that device designs
comply with specific serial data standards.
The compliance modules available to you
are listed in the Modules menu.

This manual only discusses the operation
of the Serial Analysis module. However,
the compliance modules may include
specific help files and PDF files of
Methods of Implementation (MOI) that
explain how to use the compliance
module.

Ensuring Compatibility

For information on oscilloscope and RT-Eye application compatibility, refer to the Optional Applications Software on
Windows Based Oscilloscopes Installation Manual, Tektronix part number 071-1078-xx, that shipped with your application.

2

RT-Eye Quick Start User Manual

Minimum Required System Configuration

To check whether you system meets the
minimum required system configuration,
do the following procedure:

1. Select File > Minimize to minimize the

TekScope application.

2. Select Start > Programs > TekAp-

plications > tdsRT-Eye > Readme,

note the minimum firmware version
that is required, and close the Readme
file.

Getting Started

1

3. Click TekScope.

2

3

RT-Eye Quick Start User Manual

3

Getting Started

4. Select Help > About TekScope0 in
the oscilloscope menu bar.

5. Verify that the firmware version is the
same or greater than that noted in
step 2.

4

Other minimum requirements are:

H Windows 2000 or Windows XP

operating system

H 850 MHz Processor

H 512 MB SDRAM

4

RT-Eye Quick Start User Manual

Getting Started

Other Requirements and Restrictions

MATLAB

The RT-Eye installer also installs the Sun Java Run-Time Environment (JRE) and the Mathworks MATLAB Run-Time
Server. The MATLAB server is dedicated to the RT-Eye application and cannot be used for other purposes.

Do not close the MATLAB Server icon in
the oscilloscope task bar. The application
will close the MATLAB sever when you
exit the application.

Oscilloscope

A maximum sampling rate with interpolation is often necessary to ensure accurate results. Be sure to consider the
following differences in sampling rates before taking measurements:

H The TDS6604 oscilloscopes sample at 20 GS/s on two channels and at 10 GS/s on four channels.

H The TDS6000B oscilloscopes sample at 20 GS/s on two and four channels.

H The TDS6000C oscilloscopes sample at 40 GS/s on two channels and 20 GS/s on four channels.

H The TDS7404 oscilloscopes sample at 20 GS/s on one channel and at 10 GS/s on two channels.

H The TDS7000B oscilloscopes sample at 20 GS/s on one channel, 10 GS/s on two channels, and 5 GS/s on four

channels.

When the Record Length of the oscilloscope is set to 4 M or less, the application can take all measurements. The RT-Eye
application can take a TIE measurement on a record length up to 20 M.

Keyboard

You will need to use a keyboard to enter new names for some file save operations.

Using Accessories

There are no standard accessories for this product.

Installing the Application

For information on how to install the RT-Eye application, refer to the Optional Applications Software on Windows Based
Oscilloscopes Installation Manual that shipped with your application. This manual contains the following information:

H Checking for available applications, compatible oscilloscopes, and relevant software and firmware version numbers

H Using the five-time free trials for applications

H Applying labels for a newly authorized option installation keys

H Installing application software

H Enabling applications

H Downloading updates from the Tektronix Web site

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5

Getting Started

Connecting to the Device Under Test

You can use any compatible probes to connect between the device under test (DUT) and oscilloscope.

WARNING. To avoid electrical shock and equipment damage, refer to the General Safety Summary at the beginning of
this manual and the safety summaries in your oscilloscope and probe user manuals.

Power off the device under test before you attach probes. Do not touch exposed conductors except with the properly rated
probe tips. Refer to your probe manual for proper use.

To ensure that the bandwidth is adequate
for rise time measurements, your probe
and oscilloscope combination must have
a system bandwidth greater than 1.5
times the bit rate that you are measuring.
This ensures that the bandwidth is
adequate for most measurements, since
most of the energy in high-speed serial
data signals is contained in the first and
third harmonics. To ensure accurate
risetime measurements, 2.5 times the bit
rate (5th harmonic) is required.

Typical Probing Configurations

There are four typical probing configurations for serial data links: two for pseudo differential waveforms and two for true
differential waveforms. The method that you use to set up your measurement channel(s) depends on your application and
what you want to measure.

H Two TCA-to-SMA adapters (single

ended)

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RT-Eye Quick Start User Manual

H One P73XX SMA differential probe

H Two P72XX single-ended or P73XX

differential probes

Getting Started

H One P73XX differential probe

NOTE. You must deskew the probes when using two channels to perform pseudo-differential measurements. Use the
proper deskew fixture and procedure as described in the user manual or online help of your oscilloscope.

The RT-Eye application relies on upsampled, deskewed data from the oscilloscope to conduct math operations for
differential and common mode waveform measurements. Upsampling prior to deskew is required to ensure accurate
measurements.

For more information about probes, refer to Choosing the Probe Configuration in the RT-Eye Serial Compliance and
Analysis Online Help.

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Getting Started

Calibrating the Oscilloscope and Probes

NOTE. To ensure accurate results, calibrate the oscilloscope and probes before you run tests. Refer to your oscilloscope
and probe documentation for additional information.

1. Click Utilities > Instrument Calibra­tion to begin calibrating the oscillo-

scope for signal path compensation.

2. Click Calibrate.

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3. After the SPC compensation finishes

(verify that the Status is Pass), select

Vertical > Probe Cal0.

4. Connect the probe calibration signal to

the probe.

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RT-Eye Quick Start User Manual

5. Click Calibrate Probe.

Getting Started

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RT-Eye Quick Start User Manual

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Getting Started

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RT-Eye Quick Start User Manual

Operating Basics

Starting the RT-Eye Application

1. Start the application:

H For non-B or non-C model

oscilloscopes, select File > Run
Application > RT-Eye Serial
Compliance and Analysis.

H For B and C model oscilloscopes,

select App > RT-Eye Serial
Compliance and Analysis.

Operating Basics

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1

The RT-Eye application displays in the
lower half of the screen.

2. If the RT-Eye Welcome dialog box dis-

plays, click Cancel.

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Operating Basics

Defining Preferences

You can set some preferences that will
help you use the application more
efficiently. To set the preferences:

1. Select File > Preferences0.

The Preferences dialog window
displays.

2. Check the preferences to:

H Display a Welcome dialog window

each time that you start the
application that allows you to run
either MyTest or the Wizard

H Display the Autoset Summary

dialog window each time you
select Autoset.

H Enable high-performance eye

rendering. When selected, only
segments of the waveform
surrounding the worst-case eye
violations are rendered. The
resulting eye typically contains
10,000 to 12,000 unit intervals
(UIs) for statistical validity but
results in faster display of the eye
diagrams. If this selection is not
checked, then all the UIs in the
record are rendered, resulting in
increased fidelity of the eye
diagram, but reduced
measurement throughput.

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3. Click:

H Apply to apply your selections

and leave the dialog window open

H Cancel to discard your changes

and close the dialog window

H OK to accept your changes and

close the dialog window

RT-Eye Quick Start User Manual

Hiding and Returning the RT-Eye Application

Operating Basics

1. Click the Hide icon to minimize the

RT-Eye application and maximize the
oscilloscope display.

2. To display the RT-Eye application

again:

H For non-B or non-C model

oscilloscopes, click the App
button.

H For B and C model oscilloscopes,

select App > Restore
Application.

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Operating Basics

Minimizing and Maximizing the RT-Eye Application

1. To minimize the application, select File
> Minimize.

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2. To maximize the application, click the
RT-Eye icon in the task bar.

If you expanded the TekScope application
full screen after minimizing the RT-Eye
application, you can maximize the RT-Eye
application by performing the following
step:

3. To maximize the RT-Eye application
again:

H For non-B or non-C model

oscilloscopes, click the App
button.

H For B and C model oscilloscopes,

select App > Restore
Application.

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RT-Eye Quick Start User Manual

Docking and Undocking the RT-Eye Application

1. To undock the RT-Eye application, se-

lect File > Undock.

2. Click and drag the RT-Eye title bar to

position the application anywhere on
screen or on a second monitor, if used.

Operating Basics

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3. To dock the RT-Eye application, select

File > Dock.

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Operating Basics

Using the Sequencing Controls

Sequencing is the steps to acquire waveform information, determine if the information is usable for the measurement, take
the measurement, and display the results. (Before starting sequencing, you must set up the application properly.)

There are three sequencing modes:

H Single RunProcesses a single waveform, and then halts. If the waveform source is a live channel, a new waveform

is acquired using the current trigger settings of the oscilloscope

H Single No AcqProcesses a single waveform, and then halts. If the waveform source is a live channel, the

measurements are performed on the currently displayed waveform without retriggering

H Free RunContinuously acquires waveforms and sequences until you select the Stop command button; results and

any plots are updated one or more times per measurement cycle

The sequencing controls consist of the
following:

1. Clear ResultsClears previously taken
measurements.

2. ModeSelects one of three modes:
Single Run, Single No Acq, or Free
Run.

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3. StartBegins the sequencing steps.

4. StopStops the sequencing.

For example, if you selected Free Run
as the mode, you can click Stop to end
the sequencing. If you selected Single
Run or Single No Acq, it is not neces­sary to click Stop.

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RT-Eye Quick Start User Manual

Exiting the RT-Eye Application

1. Select File > Exit or click the Close

icon.

The Exit RT-Eye dialog box opens.

Operating Basics

1

2. Check Save MyTest if you want to

save your last test configuration so that
it can be recalled the next time you
open the RT-Eye application.

3. Click:

H Yes to exit the RT-Eye application

and restore your oscilloscope
settings to their state prior to
starting RT-Eye.

H No to exit without restoring the

oscilloscope settings.

H Cancel to return to the RT-Eye

application.

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