Tektronix TDSDDM2 User manual

User Manual

TDSDDM2 Disk Drive Measurements Application

071-0815-01

This document supports software version 1.0.0 and above.

www.tektronix.com

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, Inc., P.O. Box 500, Beaverton, OR 97077

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY

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 a 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 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.

Getting Started

General Safety Summary ix.........................................

Preface xi........................................................

Related Documentation and Online Help xi..............................

Conventions xii....................................................

Contacting Tektronix xii..............................................

Product Description 1--1........................................

Compatibility 1--1...................................................

Requirements and Restrictions 1--2......................................

Updates Through the Web Site 1--2......................................

Accessories 1--3.....................................................

Installation 1--5...............................................

Applying a New Label 1--5............................................

Installing the Application 1--6..........................................

From the Compact Disc 1--7........................................

From Floppy Disks 1--7...........................................

Enabling the Application 1--8..........................................

Connecting to a System Under Test 1--8..................................

Primary Setup 1--9...............................................

Secondary Setup 1--10.............................................

Configuration 1--11.............................................

Setting Up the Oscilloscope Trigger 1--11..................................

Setting Up the Application Trigger 1--12...................................

Hysteresis 1--14......................................................

Configuring the Input Waveforms 1--16...................................

Operating Basics

Basic Operations 2--1..........................................

Application Interface 2--1.............................................

Using Basic Oscilloscope Functions 2--2..................................

Using Online Help 2--2............................................

Minimizing and Maximizing the Application 2--2.......................

Returning to the Application 2--3....................................

Application Directories and File Names 2--3...........................

Setting Up the Application 2--4.........................................

Selecting a Measurement 2--4.......................................

Configuring a Measurement 2--9....................................

Taking Measurements 2--15.............................................

Taking New Measurements 2--15.....................................

Localizing Measurements 2--16......................................

Analyzing the Results 2--16.............................................

Viewing Statistics 2--18.............................................

Viewing Plots 2--18................................................

Clearing Results 2--19..............................................

Saving the Results to a File 2--19.........................................

Logging Statistics 2--19............................................

TDSDDM2 Disk Drive Measurements Application User Manual

Table of Contents

Data Log File Format 2--20..........................................

Viewing a Data Log File 2--21...........................................

Saving and Recalling Setups 2--21........................................

Saving a Setup 2--22...............................................

Recalling a Saved Setup 2--23........................................

Recalling the Default Setup 2--24.....................................

Exiting the Application 2--24............................................

Tutorial 2--25..................................................

Setting Up the Oscilloscope 2--25........................................

Starting the Application 2--25...........................................

Recalling a Waveform File 2--26.........................................

Taking a TAA Measurement 2--27........................................

Saving the Results to a Data Log File 2--29.................................

Viewing a Data Log File 2--29...........................................

Stopping the Tutorial 2--31.............................................

Returning to the Tutorial 2--31...........................................

Application Examples 2--33......................................

Configuring a Measurement 2--34........................................

Specifying a Range of Sectors 2--34...................................

Specifying a Limit Test 2--34........................................

Specifying Gating 2--34............................................

Specifying Hysteresis 2--35..........................................

Specifying a Filter 2--35............................................

Using Reference Waveforms 2--35........................................

Measuring TAA 2--35..................................................

Measuring PW50 2--36................................................

Measuring Asperity 2--37...............................................

Measuring Overwrite 2--38.............................................

Measuring Resolution 2--40.............................................

Measuring Baseline Shift 2--40..........................................

Measuring NLTS 2--41.................................................

Measuring SNR 2--43..................................................

Creating and Viewing Track Profile Plots 2--45..............................

GPIB Program Example 2--49....................................

Guidelines 2--49......................................................

Program Example 2--49................................................

Reference

Menu Structure 3--1...........................................

Parameters 3--3...............................................

Measurements Menu 3--3..............................................

TAA/PW50 Menu 3--3............................................

NLTS/Other Menu 3--4............................................

Save/Recall Menu 3--6............................................

Minimize Menu 3--6..............................................

Inputs Menu 3--6....................................................

Inputs/Trigger Menu 3--6..........................................

Inputs Filters Menu 3--7...........................................

Inputs General Menu 3--7..........................................

View Menu 3--8.....................................................

TDSDDM2 Disk Drive Measurements Application User Manual

Appendices

Table of Contents

Plot Track Profile Menu 3--8...........................................

Log Statistics Menu 3--8..............................................

Help Menu 3--8.....................................................

Sequence Control Menu 3--9...........................................

Appendix A: Measurement Algorithms A--1........................

Oscilloscope Setup Guidelines A--1......................................

TAA Measurements A--1..............................................

TAA+ and TAA-- Measurements A--3.................................

PW50 Measurements A--3.............................................

PW50+ and PW50-- Measurements A--5..............................

NLTS Measurements A--6..............................................

NLTS Initial Measurement A--7......................................

NLTS 1st Adjacent Measurement A--7................................

NLTS 2nd Adjacent Measurement A--8................................

Other Measurements A--9..............................................

SNR Measurement A--9............................................

Asperity Measurement A--9.........................................

Overwrite Measurement A--10........................................

Resolution Measurement A--10.......................................

Baseline Shift Measurement A--11....................................

Snapshot Measurements A--12...........................................

Amplitude Asymmetry (Amplitude asym) A--13.........................

Timing Asymmetry

(Time asym) A--13..........................................

Time Peak-to-Trough (Time PT) and

Time Trough-to-Peak (Time TP) A--14..........................

Calculating Statistics A--14..............................................

Maximum Value A--14..............................................

Minimum Value A--14..............................................

Mean Value A--15.................................................

Standard Deviation Value A--15......................................

Appendix B: Track Profile Plots B--1..............................

Using Track Profiles B--1..............................................

About the Track Profile Reference Memory B--1............................

Appendix C: GPIB Command Syntax C--1.........................

Starting the Application C--2...........................................

VARIABLE:VALUE TDS COMMAND C--2..............................

Index

TDSDDM2 Disk Drive Measurements Application User Manual

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Table of Contents

List of Figures

Figure 1--1: TDSDDM2 Disk Drive Measurements Application 1--1....

Figure 1--2: TDS7000 series oscilloscope label location 1--6...........

Figure 1--3: TDS5000 series oscilloscope label location 1--6...........

Figure 1--4: Primary setup connections 1--9........................

Figure 1--5: Secondary setup connections 1--10......................

Figure 1--6: Spectral Control T tab for a TDS7104 oscilloscope 1--11....

Figure 1--7: Sector Trigger Mode default values 1--13................

Figure 1--8: One track 1--14......................................

Figure 1--9: Using hysteresis to avoid false identification of peaks 1--15..

Figure 1--10: Hysteresis option 1--15...............................

Figure 2--1: Application interface 2--1.............................

Figure 2--2: Returning to the application 2--3......................

Figure 2--3: TAA/PW50 Measurements menu 2--4...................

Figure 2--4: How to enter Limit Test option values 2--5..............

Figure 2--5: NLTS/Other Measurements menu 2--6..................

Figure 2--6: NLTS Parameter options 2--7.........................

Figure 2--7: How the application calculates the polynominal index 2--8.

Figure 2--8: SNR Parameter options 2--8..........................

Figure 2--9: Asperity Parameter options 2--9.......................

Figure 2--10: Inputs/Trigger menu 2--9............................

Figure 2--11: Inputs Filters menu 2--11.............................

Figure 2--12: Filter characteristics 2--12............................

Figure 2--13: Using both Highpass and Lowpass filters 2--12...........

Figure 2--14: Inputs General menu 2--14...........................

Figure 2--15: Sequence Control menu 2--15.........................

Figure 2--16: Results as statistics and as a Track Profile plot 2--17......

Figure 2--17: Example of viewing data in a .csv file 2--17..............

Figure 2--18: Plot Track Profile menu 2--18.........................

Figure 2--19: Log Statistics menu 2--19.............................

Figure 2--20: Log file directory 2--20...............................

Figure 2--21: Save/Recall Measurements menu 2--21.................

Figure 2--22: Save directory 2--22.................................

Figure 2--23: Recall directory 2--23................................

Figure 2--24: Exit menu 2--24.....................................

TDSDDM2 Disk Drive Measurements Application User Manual

Table of Contents

Figure 2--25: Starting the application 2--26.........................

Figure 2--26: Oscilloscope reference waveform setup 2--26............

Figure 2--27: Waveform directory to recall reference waveforms 2--27...

Figure 2--28: Inputs/Trigger menu setup 2--27.......................

Figure 2--29: Taking a measurement 2--28..........................

Figure 2--30: TAA lesson: statistical results 2--28....................

Figure 2--31: Log Statistics menu with default file name 2--29..........

Figure 2--32: Log file with default file name 2--30....................

Figure 2--33: TAA.csv file viewed in Wordpad 2--30..................

Figure 2--34: PW50 measurement results example 2--36...............

Figure 2--35: Asperity measurement results example 2--37.............

Figure 2--36: Overwrite measurement, PASS 1 example 2--39..........

Figure 2--37: Overwrite measurement results, PASS 2 example 2--39....

Figure 2--38: Baseline Shift measurement results example 2--41........

Figure 2--39: NLTS measurement results example 2--43..............

Figure 2--40: SNR measurement results example 2--45................

Figure 2--41: Track Profile plot example 2--46......................

Figure 2--42: Track Profile plot with cursors 2--47...................

TDSDDM2 Disk Drive Measurements Application User Manual

Table of Contents

List of Tables

Table 1--1: Compatible oscilloscopes 1--1..........................

Table 1--2: Primary setup channel assignments 1--9.................

Table 1--3: Default channel assignments 1--16.......................

Table 2--1: Application interface items 2--2........................

Table 2--2: Default directory names 2--3..........................

Table 2--3: File name extensions 2--3.............................

Table 2--4: TAA/PW50 measurements options 2--4..................

Table 2--5: Limit Test options 2--5...............................

Table 2--6: Limit Test entry methods 2--5.........................

Table 2--7: NLTS/Other Measurements options 2--6.................

Table 2--8: NLTS Parameter options 2--7..........................

Table 2--9: SNR Parameter options 2--8...........................

Table 2--10: Trigger options 2--10.................................

Table 2--11: Filters options 2--11..................................

Table 2--12: General options 2--14................................

Table 2--13: Sequence Control menu 2--15..........................

Table 2--14: Plot Track Profile options 2--18........................

Table 2--15: Log Statistics options 2--20...........................

Table 2--16: Save/Recall Measurements options 2--22................

Table 2--17: Waveform files and application examples 2--33...........

Table 3--1: TAA/PW50 Limit Test area parameters 3--4.............

Table 3--2: NLTS/Other Limit Test area parameters 3--4............

Table 3--3: NLTS Parameters area 3--5...........................

Table 3--4: SNR Parameters area 3--5............................

Table 3--5: Asperity Parameter area 3--6..........................

Table 3--6: Save/Recall Measurements menu parameters 3--6.........

Table 3--7: Input Channels area parameters 3--6...................

Table 3--8: Trigger area parameters 3--7..........................

Table 3--9: Filter 1 and Filter 2 areas parameters 3--7...............

Table 3--10: General menu parameters 3--7........................

Table 3--11: Plot Track Profile menu parameters 3--8...............

Table 3--12: Log Statistics menu parameters 3--8...................

Table 3--13: Sequence Control menu parameters 3--9...............

TDSDDM2 Disk Drive Measurements Application User Manual

Table of Contents

Table C--1: VARIABLE:VALUE TDS COMMAND arguments

and queries C--2...........................................

Table C--2: Measurement results queries C--5......................

Table C--3: Results returned by measurements C--7.................

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Table of Contents

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TDSDDM2 Disk Drive Measurements Application 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.

Ground the Product. This product is grounded through the grounding conductor of the power cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly grounded.

Observe All Terminal Ratings. To avoid 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.

Connect the ground lead of the probe to earth ground only.

Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.

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

Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present.

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

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

Provide Proper Ventilation. Refer to the manual’s installation instructions for

details on installing the product so it has proper ventilation.

TDSDDM2 Disk Drive Measurements Application User Manual

General Safety Summary

Symbols and Terms

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 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 Manual WARNING

High Voltage

Protective Ground

(Earth) Terminal

TDSDDM2 Disk Drive Measurements Application User Manual

Preface

This manual contains operating information for the TDSDDM2 Disk Drive Measurements Application. The manual consists of the following chapters:

H The Getting Started chapter briefly describes the TDSDDM2 Disk Drive

Measurements Application, lists oscilloscope compatibility, and provides installation instructions.

H The Operating Basics chapter covers basic operating principles of the

application and includes a tutorial that teaches you how to set up the application to acquire a waveform, take measurements, and view the results.

The Application Examples section includes examples of tests and measurements to give you ideas on how to solve your own measurement problems.

To show you how to operate the application using GPIB commands, this chapter also contains a simple GPIB program.

H The Reference chapter includes a diagram of the menu structure and

descriptions of parameters.

H The Measurement Algorithms appendix contains information on measure-

ment guidelines and on how the application takes the measurements.

H The Track Profile Plots appendix contains information about using track

profile plots.

H The GPIB Command Syntax appendix contains a list of arguments and values

that you can use with the GPIB commands and their associated parameters.

Conventions

You can find a portable document format (PDF) file of the installation manual in the Documents directory on the Optional Applications Software on Windows-

Based Oscilloscopes Installation CD--ROM.

IDEMA Standard. The International Disk Drive Equipment and Materials Association (IDEMA) 1995 Standards Binder, section T for Test Methods, is the

source document for test criteria used by theTDSDDM2 application. Polynomials must be valid according to the 1995 IDEMA “white paper.”

This manual uses the following conventions:

H This manual refers to the TDSDDM2 Disk Drive Measurements Application

as the TDSDDM2 application or as the application.

H This manual refers to any product on which this application will run as an

oscilloscope

H When steps require that you make 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 Measururements>Save/Recall>Recall.

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TDSDDM2 Disk Drive Measurements Application User Manual

Contacting Tektronix

Preface

Phone 1-800-833-9200*

Address Tektronix, Inc.

Department or name (if known) 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA

Web site www.tektronix.com

Sales support 1-800-833-9200, select option 1*

Service support 1-800-833-9200, select option 2*

Technical support Email: techsupport@tektronix.com

1-800-833-9200, select option 3* 1-503-627-2400

6:00 a.m. -- 5:00 p.m. Pacific time

* This phone number is toll free in North America. After office hours, please leave a

voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices.

TDSDDM2 Disk Drive Measurements Application User Manual

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Preface

xiv

TDSDDM2 Disk Drive Measurements Application User Manual

Getting Started

Product Description

The TDSDDM2 Disk Drive Measurements Application is a Java-based application that enhances basic capabilities of some Tektronix oscilloscopes.

The application provides disk drive measurements, can display the results as statistics or as a plot, and can save the results to a data log file.

Figure 1--1 shows an example of statistical results for a TAA measurement in the application part of the display (lower half) and a Track Profile plot of those results in the oscilloscope part of the display (upper half).

Figure 1- 1: TDSDDM2 Disk Drive Measurements Application

Compatibility

The Disk Drive Measurements Application is compatible with several TDS7000 series oscilloscopes. Table 1--1 lists the oscilloscopes and firmware version numbers.

Table 1- 1: Compatible oscilloscopes

Model number* Firmware version

TDS7054 and TDS7104 1.2.0 or above

TDS7404 1.3.0 or above

TDS7254 1.3.1 and above

TDS5054 and TDS5104 1.0.0 or above

* For a current list, see the Software and Drivers category on www.tektronix.com.

TDSDDM2 Disk Drive Measurements Application User Manual

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Product Description

Requirements and Restrictions

The SunT Java Run-time Environment V1.2.2 or above must be installed on the oscilloscope to operate the TDSDDM2 application.

The TDSDDM2 application does not support hard disk drives that mark the beginning of a track by the absence of a sector pulse.

NOTE. This application may be compatible with future models of oscilloscopes that have different specifications. If this occurs, menus or options that are unavailable will appear dim if they are beyond the acquisition capability of the oscilloscope.

Updates Through the Web Site

You can find information about this and other applications at the Tektronix Inc. web site, www.tektronix.com. Check this site for application updates and for other free applications.

To install an application update, you will need to download it from the Tektronix web site to the oscilloscope hard disk.

NOTE. More information about changes to the application or installation is in a

Readme.txt file on the web site. You should read it before you continue.

To download an application from the web site, follow these steps:

1. Access www.tektronix.com/Software & Drivers/Oscilloscopes.

2. Scroll through the files to the application that you want, select the file, and

download it to your hard disk drive. If necessary, unzip the file.

If your oscilloscope is connected to a network, you do not need to follow the

remaining steps.

3. If your oscilloscope is not connected to a network, copy the application from

the hard disk to blank, DOS-formatted floppy disks.

NOTE. To ensure that the files were downloaded successfully, always unzip the files on a hard disk before copying them to floppy disks.

1- 2

4. To install the application, refer to From Floppy Disks procedure on page 1--7.

TDSDDM2 Disk Drive Measurements Application User Manual

Accessories

Product Description

There are no standard accessories for this product other than this manual.

To connect the Read Signal input to an oscilloscope channel, Tektronix Differential Probes are recommended, such as the P6247 or P6248 probe for TDS7054 and TDS7104 oscilloscopes, or the P7330 probe for a TDS7404 oscilloscope.

TDSDDM2 Disk Drive Measurements Application User Manual

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Product Description

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TDSDDM2 Disk Drive Measurements Application User Manual

Installation

This section contains information on the following tasks:

H Applying a new label

H Installing the TDSDDM2 application

H Enabling the application

H Connecting to a system under test

NOTE.TheOptional Applications Software on Windows-Based Oscilloscopes Installation Manual contains up-to-date information and procedures. Since

installation procedures may be different for the TDS7000 series and other oscilloscopes, be sure to check this manual before you install the software.

You can find a portable document format (PDF) file of the installation manual in the Documents directory on the Optional Applications Software on Windows-

Based Oscilloscopes Installation CD--ROM.

Applying a New Label

If you receive a newer version of this application, or purchase an application that did not exist when you bought your oscilloscope, you need to apply a new label to the rear panel of the oscilloscope. The label contains important information, such as the serial number of the oscilloscope, options purchased for that serial number, and an authorized Option Installation Key number. Each label is unique.

Figure NO TAG shows where to apply the new label on the back of a TDS7000 series oscilloscope.

Figure 1--3 shows where to apply the new label on the back of a TDS5000 series oscilloscope.

TDSDDM2 Disk Drive Measurements Application User Manual

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Installation

Label location

Figure 1- 2: TDS7000 series oscilloscope label location

Label location

Figure 1- 3: TDS5000 series oscilloscope label location

Installing the Application

Normally, the TDSDDM2 application resides on the hard disk drive of your oscilloscope. However, you may still need to install the application software for the following reasons:

H You receive an application introduced after you received your oscilloscope

H Youhavetorebuildtheharddrive

NOTE. To operate the TDSDDM2 application, the Java Run-time Environment (JRE) V1.2.2 or above must be installed on your oscilloscope.

If the JRE is not installed, a message displays when you try to start the application. If the message appears, reinstall the JRE from the optional applications compact disc (CD).

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TDSDDM2 Disk Drive Measurements Application User Manual

Installation

From the Compact Disc

To install the TDSDDM2 application from the optional applications software CD for your instrument, follow these steps:

1. If the keyboard is not installed, connect it to the oscilloscope rear panel (the optional-accessory keyboard plugs into the USB connector).

2. Power on the oscilloscope to start Windows.

3. Install the optional applications software CD in the CD-ROM reader on the

rear-panel of the oscilloscope.

4. Select the My Computer icon.

5. In the Exploring -- My Computer window, select the D: (CD-ROM) drive.

6. The Java Run-time Environment software must be installed before you can

install optional application software. If the Java Run-time Environment software is already installed, skip to step 7; otherwise, follow these steps:

a. Select the Jre directory.

b. Select the .exe file in the Jre directory.

c. Accept all default settings recommended by the install program.

7. Select the Tdsddm2 directory.

From Floppy Disks

8. Select the Setup.exe file to start the install program.

9. Follow the instructions given by the install program. The oscilloscope must

reboot to complete the installation process.

To install the TDSDDM2 application from floppy disk, follow these steps:

1. Power on the oscilloscope to start Windows.

2. Insert disk #1 in the floppy disk drive.

3. Select the My Computer icon.

4. In the Exploring -- My Computer window, select the A: (3 1/2 Floppy) drive.

NOTE. Additional information about the application or installation is located in a Readme.txt file on the floppy disk. Read the file before you continue.

If you are updating the application, the Readme.txt file on the Tektronix w eb site supercedes the Readme.txt file on the floppy disk.

5. Select the Setup.exe file to start the install program.

6. Follow the on-screen instructions.

TDSDDM2 Disk Drive Measurements Application User Manual

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Installation

7. When the installation is complete, the oscilloscope will restart. You need to

Enabling the Application

You will need to enter the authorized Option Installation Key to enable the application. The key is specific to the serialized oscilloscope and options for which it was purchased.

NOTE. Do not enter this key until all application software that you have purchased has been installed.

To enter the key number, follow these steps:

Wait until after the floppy disk drive LED has gone out to remove each floppy disk and insert another.

remove the final floppy disk when prompted.

1. If the oscilloscope powered on in the toolbar mode (default), select the Menu button (upper right corner of the display) to put the oscilloscope into menu-bar mode. In menu-bar mode you should see a PC-style menu across the top of the display.

2. Go to the Utility menu in the menu bar and select Option Installation.

3. Follow the on-screen instructions to enter the alphanumeric key number

exactly as it is printed on the rear-panel label. Figure NO TAG on page NO TAGNO TAG shows the location of the label on the back of the oscilloscope.

Connecting to a System Under Test

For best signal accuracy, you should use one differential probe and two standard probes. For connection to the Read signal, use a differential probe, such as the Tektronix P6247 or P6248 probe for TDS7054 and TDS7104 oscilloscopes, or the P7330 probe for a TDS7404 oscilloscope. For connection to the Index and Sector signals, use standard oscilloscope probes, such as the P6139A passive probe or P6243 active probe for TDS7054 and TDS7104 oscilloscopes, or the P7240 active probe for a TDS7404 oscilloscope.

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TDSDDM2 Disk Drive Measurements Application User Manual

Installation

Table 1--2 shows the default channel-to-signal assignments. You can change the channel assignments to match your configuration.

Table 1- 2: Primary setup channel assignments

Channel Description

Ch 1 Read signal from the disk drive preamp channel

Ch 2 Read Gate signal (optional)

Ch 3 Sector pulse, marking the beginning of the sector on the track

Ch 4 Index pulse, marking the beginning of the track

NOTE. The TDSDDM2 application does not support disk drives that mark the beginning of a track by the absence of a sector pulse. For this case, a timeout trigger setup is needed to identify the beginning of the track.

There are two connection configurations, primary and secondary.

Primary Setup

WARNING. To avoid electric shock, you must ensure that power is removed from the SUT before attaching a probe to it. Do not touch exposed conductors except with the properly rated probe tips. Refer to the probe manual for proper use.

Power down the SUT before connecting probes to it.

Use the primary setup if you want the oscilloscope to control the disk measurements. The primary setup is used for most configurations. Connect the disk drive to the oscilloscope as shown in Figure 1--4.

Test oscilloscope

Disk drive

CH 1 CH 4

CH 3

Index signal (standard probe)

Sector signal (standard probe)

Read signal (differential probe)

Figure 1- 4: Primary setup connections

TDSDDM2 Disk Drive Measurements Application User Manual

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Installation

Secondary Setup

When using the secondary setup, you must specifically program the test measurement control sequences. Refer to the GPIB Program Example section andtothe GPIB Command Syntax appendix in this manual for more information on how to control the application with a GPIB program.

Connect the disk drive to the oscilloscope as shown in Figure 1--5.

Test oscilloscope

Disk drive

CH 1 CH 2

Read Gate signal (standard probe)

Read signal (differential probe)

Figure 1- 5: Secondary setup connections

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TDSDDM2 Disk Drive Measurements Application User Manual

+ 110 hidden pages

Tektronix TDSDDM2 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY

Table of Contents

List of Figures

List of Tables

General Safety Summary

Preface

Related Documentation and Online Help

Conventions

Contacting Tektronix

Product Description

Compatibility

Requirements and Restrictions

Updates Through the Web Site

Accessories

Installation

Applying a New Label

Installing the Application

Enabling the Application

Connecting to a System Under Test