Tektronix TDS5052, TDS5054, TDS5104 Service Manual

Service Manual

TDS5000 Series Digital Phosphor Oscilloscopes

071-1004-02

This document applies to firmware version 1.00 and above.

Warning

The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so. Refer to all safety summaries prior to performing service.

www.tektronix.com

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercede s 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 products that it ma nufactures and sells will be free from de fects in materials and workmanship for a period of one (1) year from the date of shipment. If t his product proves defective during its warranty period, Tektronix, at its option, will either repair the defective product without charge for parts and labor, or provide a replacement in exchange for the defective product.

This warranty applies only to products returned to the designated Tektronix de pot or the Tektronix authorized representative from which the product was originally purchased. For products returned to other locations, Customer will be assessed an applicable service charge. The preceding limitation shall not apply within the European Economic Area, where products may be returned for warranty service to the nearest designated service depot regardless of the place of purchase.

In order to obtain service under this warranty, Customer must provide the appli cable office of Tektronix or its authorized representative with notice of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix or its representative, with shipping charges prepaid. Tektronix or its representative shall pay for the return of the product to Custome r. Customer shall be responsible for paying any associated taxes or duties.

This warranty shall not apply to any defect, failure or damage caused by improper use or im proper or inadequate maintenance and care. Tektronix shall not be obliga ted to furnish service under this warranty:

a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or

service the product;

b) to repair damage resulting from improper use or connection to incompat ible equipment;

c) to repair any damage or malfunction caused by the use of non-Tektronix supplies or consumables;

d) to repair a product that has been modified or integra ted with other products when the effect of such

modification or integration increases the time or difficulty of servicing the product; or

e) to repair damage or malfunction resulting from failure to perform user maintenance and cleaning at the

frequency and as prescribed in the user manual (if applicable).

THE ABOVE WARRANTIES ARE GIVEN BY TEKTRONIX WITH RESPECT TO THIS 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 REPAIR OR REPLACE DEFECTIVE PRODUCTS 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.

Specifications

Operating Information

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

Service Safety Summary xi....................................

Preface xiii...................................................

Manual Structure xiii................................................

Manual Conventions xiii..............................................

Related Documentation xiv...........................................

Contacting Tektronix xv.............................................

Product and Feature Description 1--1....................................

Acquisition Features 1--2..........................................

Signal Processing Features 1--2.....................................

Display Features 1--3.............................................

Measurement Features 1--3.........................................

Trigger Features 1--3..............................................

Convenience Features 1--3.........................................

Specification Tables 1--4..............................................

Installation 2--1.....................................................

Before You Start 2--1.............................................

Environmental Considerations 2--1..................................

Connect the Peripherals 2--2........................................

Power On the Instrument 2--4.......................................

Powering Off the Oscilloscope 2--4..................................

Create an Emergency Startup Disk 2--4...............................

Software Installation 2--5..........................................

Operating Information 2--6............................................

Back Up User Files 2--6...........................................

User Interface Map 2--7...........................................

Front Panel I/O Map 2--8..........................................

Rear Panel I/O Map 2--8...........................................

Front Panel Controls Map 2--9......................................

Instrument Diagnostics 2--10........................................

Signal Path Compensation 2--10.....................................

Using the Online Help 2--11.........................................

TDS5000 Series Service Manual

Table of Contents

Theory of Operation

Logic Conventions 3--1...............................................

Module Overviews 3--1...............................................

Performance Verification

Conventions 4--2....................................................

Brief Procedures 4--5...........................................

Self Tests 4--5.......................................................

Functional Tests 4--6.................................................

Performance Tests 4--17.........................................

Prerequisites 4--17....................................................

Equipment Required 4--18..............................................

TDS5000 Test Record 4--20............................................

Signal Acquisition System Checks 4--23...................................

Time Base System Checks 4--38.........................................

Trigger System Checks 4--44............................................

Output Signal Checks 4--53.............................................

Sine Wave Generator Leveling Procedure 4--60.............................

General 3--1....................................................

Input Signal Path 3--1.............................................

Display Panel 3--2................................................

Front Panel 3--2..................................................

Side Panels 3--3..................................................

Power Supply 3--3................................................

Fans 3--3.......................................................

Printer 3--3.....................................................

Verify Internal Adjustment, Self Compensation, and Diagnostics 4--5.......

Verify All Input Channels 4--7......................................

Verify the Time Base 4--9..........................................

Verify the A (Main) and B (Delayed) Trigger Systems 4--11...............

Verify the File System 4--12.........................................

Verify the Internal Printer (Optional) 4--14.............................

Check DC Voltage Measurement Accuracy 4--23........................

Check Analog Bandwidth 4--27......................................

Check Delay Between Channels 4--32.................................

Check Channel Isolation (Crosstalk) 4--36.............................

Check Long-Term Sample Rate and Delay Time Accuracy 4--38...........

Check Delta Time Measurement Accuracy 4--41........................

Check Time Accuracy for Pulse, Glitch, Timeout, and Width Triggering 4--44.

Check Sensitivity, Edge Trigger, DC Coupled 4--48......................

Check Outputs — CH 3 Signal Out and Aux Trigger Out 4--53.............

Check Probe Compensation Output 4--56..............................

TDS5000 Series Service Manual

Adjustment Procedures

Maintenance

Table of Contents

Calibration Procedure 5--1......................................

Calibration Interval 5--1...........................................

Calibration Environment 5--1.......................................

Calibration Dependencies 5--1......................................

Calibration After Repair 5--1.......................................

Required Equipment 5--2..........................................

Overview of the Procedure 5--3.........................................

Instrumentation Setup 5--4.............................................

Calibration Program Installation and Execution 5--6........................

Calibration Program Operation 5--7.....................................

Commands 5--9...............................................

Calibration Command Group 5--9.......................................

Diagnostics Command Group 5--18......................................

Sample Calibration Program 5--37................................

Preventing ESD 6--1.................................................

Inspection and Cleaning 6 --2...........................................

General Care 6--2................................................

Interior Cleaning 6--2.............................................

Exterior Cleaning 6--2............................................

Removal and Installation Procedures 6--7.........................

Preparation 6-- 7.....................................................

Procedures for External Modules 6--9....................................

Procedures for Modules 6--18...........................................

Troubleshooting 6--41...........................................

Service Level 6--41...................................................

Check for Common Problems 6--41......................................

Equipment Required 6--43..............................................

Fault Isolation Procedure 6--43..........................................

PC Interface and PC Motherboard Diagnostics 6--48.........................

Firmware Updates 6--51................................................

After Repair 6--51....................................................

BIOS Error Messages 6--52.............................................

BIOS Beep Codes 6--54................................................

PC Interface LEDs 6--54...............................................

Troubleshooting Using Reset Circuits 6--55................................

Installing the PC Motherboard Serial Number 6--57..........................

Update/Restore the PC Motherboard CMOS 6--58...........................

Installing an Authorization Key 6--58.....................................

Hard Disk Drive Maintenance 6--58......................................

Repackaging Instructions 6--61...................................

Packaging 6--61......................................................

Shipping to the Service Center 6--61......................................

TDS5000 Series Service Manual

iii

Table of Contents

Options

Electrical Parts List Diagrams

Mechanical Parts List

Options 7--1........................................................

Accessories 7--3.....................................................

Symbols 9--1.......................................................

Parts Ordering Information 10--1.........................................

Module Servicing 10--1............................................

Using the Replaceable Parts List 10--2....................................

Abbreviations 10--2...............................................

Mfr. Code to Manufacturer Cross Index 10--3...........................

TDS5000 Series Service Manual

List of Figures

Table of Contents

Figure 2-- 1: Locations of peripheral connectors on the side panel 2-- 3..

Figure 2-- 2: On/Standby switch location 2-- 4.......................

Figure 2--3: User interface 2--7...................................

Figure 2-- 4: Locations of input/output connectors on the front panel 2-- 8

Figure 2--5: Locations of connectors on the rear panel 2--8...........

Figure 2--6: Front panel controls 2--9.............................

Figure 4-- 1: Toolbar and menu bar 4-- 3...........................

Figure 4--2: Universal test hookup for functional tests -- CH 1 shown 4--7

Figure 4-- 3: Channel button location 4 --7..........................

Figure 4--4: Setup for time base test 4--9...........................

Figure 4--5: Setup for trigger test 4--11.............................

Figure 4--6: Setup for the file system test 4--13.......................

Figure 4--7: Test page from the internal printer 4--15.................

Figure 4--8: Initial test hookup 4--24...............................

Figure 4--9: Measurement of DC accuracy at maximum offset

and position 4--26...........................................

Figure 4--10: Initial test hookup 4--28..............................

Figure 4--11: Optional initial test hookup 4--28......................

Figure 4--12: Measurement of an alog bandwid th 4--30................

Figure 4--13: Initial test hookup 4--33..............................

Figure 4--14: Measurement of chan nel delay 4--35...................

Figure 4--15: Initial test hookup 4--36..............................

Figure 4--16: Initial test hookup 4--38..............................

Figure 4--17: Measurement of accuracy -- long-term and delay time 4--40

Figure 4--18: Delta time accuracy test hookup 4--41..................

Figure 4--19: Initial test hookup 4--44..............................

Figure 4--20: Measurement of time accuracy for pulse and glitch

triggering 4--46.............................................

Figure 4--21: Initial test hookup 4--48..............................

Figure 4--22: Measurement of trigger sensitivity - 50 MHz results

shown 4--50................................................

Figure 4--23: Initial test hookup 4--53..............................

Figure 4--24: Measurement of main trigger ou t limits 4--55............

Figure 4--25: Initial test hookup 4--56..............................

Figure 4--26: Measurement of p robe compensator frequency 4--57......

TDS5000 Series Service Manual

Table of Contents

Figure 4-- 27: Subsequent test hookup 4-- 58.........................

Figure 4--28: Measurement of p robe compensator amplitude 4--59......

Figure 4-- 29: Sine wave generator leveling equipment setup

(Method A) 4--60............................................

Figure 4-- 30: Sine wave generator leveling equipment setup

(Method B) 4--62............................................

Figure 5--1: Calibration setup 5--4................................

Figure 6--1: Knob removal 6--10..................................

Figure 6--2: Trim removal 6--12...................................

Figure 6--3: Bottom cover removal 6--13............................

Figure 6--4: Right-side cover removal 6--14.........................

Figure 6--5: Printer frame removal 6--16...........................

Figure 6-- 6: Internal modules 6-- 17................................

Figure 6--7: Front-panel assembly removal 6--19.....................

Figure 6--8: J1 flex cable connector removal 6--20....................

Figure 6--9: Front panel board and keyboard removal 6--21...........

Figure 6--10: Display removal 6--23................................

Figure 6--11: Touch panel and Display assembly removal 6--24.........

Figure 6--12: Display adapter board removal 6--25...................

Figure 6--13: Power flex circuit removal 6--26.......................

Figure 6--14: Floppy disk drive assembly removal 6--27...............

Figure 6--15: Floppy disk drive removal 6--28.......................

Figure 6--16: CD/Hard disk drive assembly removal 6--29.............

Figure 6--17: Removing the CD drive or hard disk drive from the

bracket 6--30...............................................

Figure 6--18: Fan fastener removal 6--32...........................

Figure 6--19: Disconnecting the fan cables 6--33.....................

Figure 6-- 20: Power supply removal 6--34...........................

Figure 6--21: Motherboard removal 6--36...........................

Figure 6--22: PC interface board removal 6--38......................

Figure 6--23: Acquisition circuit board removal 6--40.................

Figure 6--24: Primary troubleshooting tree 6--44.....................

Figure 6--25: Location of jumpers and reset button 6--45..............

Figure 6--26: The PCI busses 6--55................................

Figure 6--27: Location of jumpers and reset button 6--55..............

Figure 6--28: PCI and AGP vid eo connectors 6--57...................

Figure 9--1: TDS5000 series block diagram 9--2.....................

TDS5000 Series Service Manual

Table of Contents

Figure 10--1: External parts 10--5.................................

Figure 10--2: Inner panels 10--7...................................

Figure 10--3: Modules 10--10......................................

Figure 10--4: Drives 10--12........................................

Figure 10--5: Acquisition assembly 10--14............................

Figure 10--6: Accessories 10--15....................................

TDS5000 Series Service Manual

vii

Table of Contents

List of Tables

Table 1--1: TDS5000 models 1--1.................................

Table 1--2: Channel input and vertical specifications 1-- 4............

T able 1--3: Horizontal and acquisition system specifications 1--11......

Table 1--4: Trigger specifications 1--13.............................

Table 1--5: Display specifications 1--16.............................

Table 1--6: Input/output port specifications 1-- 17....................

Table 1--7: Data storage specifications 1--18........................

Table 1--8: Power source specifications 1--19........................

T able 1--9: Mechanical specifications 1--19.........................

Table 1--10: Environmental specifications 1--20.....................

Table 1--11: Certifications and compliances 1--21....................

Table 2--1: Additional accessory connection information 2--2.........

Table 4--1: Test equipment 4--18..................................

T able 4--2: DC V oltage measurement accuracy 4--25.................

Table 4--3: Analog bandwidth 4--29...............................

Table 4--4: Delta time measurement 4--43..........................

Table 5--1: Calibration required for module replaced 5 --1...........

Table 5--2: Required equipment and materials 5-- 2.................

Table 5--3: GPIB devices required by test program 5--5.............

T able 5--4: CALibrate commands 5--9............................

Table 5--5: DIAgnostic Commands 5--18............................

T able 6--1: External inspection check list 6--3......................

T able 6--2: Internal inspection check list 6--4......................

Table 6--3: Tools required for module removal 6--8.................

Table 6--4: Failure symptoms and possible causes 6--41...............

Table 6--5: Power supply voltages 6 --46............................

Table 6--6: Acquisition board voltages 6--46........................

Table 6--7: Power-on diagnostic tests 6--48.........................

Table 6--8: Action required for module replaced 6-- 51................

Table 6--9: BIOS Error messages 6--52............................

T able 6--10: Beep codes 6--54.....................................

Table 7--1: Instrument options 7--1...............................

Table 7--2: Instrument upgrades 7-- 2.............................

T able 7--3: Standard accessories 7--3.............................

Table 7--4: Optional accessories 7--4..............................

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TDS5000 Series Service 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.

ToAvoidFireor

Personal Injury

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

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.

Do Not Operate Without Covers. Do not operate this product with covers or panels removed.

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.

Symbols and Terms

TDS5000 Series Service Manual

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.

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 symbols may appear on the product:

CAUTION

Refer to Manual

WARNING

High Voltage

Protective Ground

(Earth) Terminal

TDS5000 Series Service Manual

Service Safety Summary

Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service

procedures.

Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present.

Disconnect Power. To avoid electric shock, switch off the instrument power, then disconnect the power cord from the mains power.

Use Care When Servicing With Power On. Dangerous voltages or currents may exist in this product. Disconnect power and disconnect test leads before removing protective panels, soldering, or replacing components.

To avoid electric shock, do not touch exposed connections.

TDS5000 Series Service Manual

Service Safety Summary

xii

TDS5000 Series Service Manual

Preface

Manual Structure

Manual Conventions

This is the service manual for the TDS5000 Digital Oscilloscope products. Read this preface to learn how this manual is structured, what conventions it uses, and where you can find other information related to servicing this product. Read the Introduction following this preface for safety and other important background information needed before using this manual for servicing this product.

This manual is divided into chapters, which are made up of related subordinate topics. These topics can be cross referenced as sections.

Be sure to read the introductions to all procedures. These introductions provide important information needed to do the service correctly, safely, and efficiently.

This manual uses certain conventions that you should become familiar with before attempting service.

Modules

Replaceable Parts

Safety

Throughout this manual, any replaceable component, assembly, or part is referred to by the term module. A module is composed of electrical and mechanical assemblies, circuit cards, interconnecting cables, and user-accessible controls.

This manual refers to any field-replaceable assembly or mechanical part specifically by its name or generically as a replaceable part. In general, a replaceable part is any circuit board or assembly, such as the hard disk drive, or a mechanical part, such as the I/O port connectors, that is listed in the replaceable parts list of Chapter 10.

Symbols and terms related to safety appear in the Service Safety Summary found at the beginning of this manual.

TDS5000 Series Service Manual

xiii

Preface

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: support@t ektronix.com

1-800-833-9200, select option 3*

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.

TDS5000 Series Service Manual

Preface

xvi

TDS5000 Series Service Manual

Specifications

This chapter contains the specifications for the TDS5000 series Digital Phosphor Oscilloscopes. All specifications are guaranteed unless labeled “typical”. Typical specifications are provided for your convenience but are not guaranteed. Specifications that are marked with the n symbol are checked in chapter four, Performance Verification.

All specifications apply to all TDS5000 models unless noted otherwise. To meet specifications, the following conditions must be met:

H The oscilloscope must have been calibrated in an ambient temperature

between 20 °C and 30 °C.

H The oscilloscope must be operating within the environmental limits listed in

Table 1--10.

H The oscilloscope must be powered from a source that meets the specifica-

tions listed in Table 1--8.

H The oscilloscope must have been operating continuously for at least 20

minutes within the specified operating temperature range.

H You must perform the Signal Path Compensation procedure after the

20-minute warm-up period, and the ambient temperature must not change

more than 5 °C without first repeating the procedure. See Run the signal

path compensation routine on page 4--6 for instructions to perform this

procedure.

Product and Feature Description

The TDS5000 series Digital Phosphor Oscilloscope family consists of the models shown in Table 1--1.

Table 1- 1: TDS5000 models

Model

TDS5052 2 500 MHz 5 GS/s

TDS5054 4 500 MHz 5 GS/s

TDS5104 4 1GHz 5 GS/s

Number of channels

Bandwidth

Maximum sample rate (real time)

TDS5000 Series Service Manual

1- 1

Specifications

Acquisition Features

Separate Digitizers. Ensure accurate timing measurements with separate digitizers for each channel. Acquisition on multiple channels is always concurrent and supports full bandwidth for single-shot acquisitions on each channel. The digitizers can also be combined to yield a higher sample rate on a single channel.

Fast Acquisition. Acquire up to 100,000 waveforms per second to see rapidly changing signals or intermittent signal irregularities.

Long Record Lengths. Choose record lengths from 500 points to up to 100,000 points per channel (up 400,000 points on a single channel). Extend the maximum record length up to a maximum of 8,000,000 points with memory options.

Peak Detect Acquisition Mode. See pulses as narrow as 400 ps even at the slower time base settings. Peak detect helps you see noise and glitches in your signal.

Acquisition Control. Acquire continuously or set up to capture single shot acquisitions. Enable or disable optional acquisition features such as equivalent time or roll mode.

Horizontal Delay. Use delay when you want to acquire a signal at a significant time interval after the trigger point. Toggle delay on and off to quickly compare the signal at two different points in time.

Signal Processing

Features

Average, Envelope, and Hi Res Acquisition. Use Average acquisition mode to remove uncorrelated noise from your signal. Use Envelope to capture and display the maximum variation of the signal. Use Hi Res to increase vertical resolution for lower bandwidth signals.

Waveform Math. Set up simple math waveforms using the basic arithmetic functions including FFT, or create more advanced math waveforms using the optional math expression editor. Waveform expressions can even contain measurement results and other math waveforms.

Spectral Analysis. (Optional) Display spectral magnitude and phase waveforms based on your time-domain acquisitions. Control the oscilloscope using the traditional spectrum analyzer controls such as span and center frequency.

1- 2

TDS5000 Series Service Manual

Specifications

Display Features

Measurement Features

Color LCD Display. Identify and differentiate waveforms easily with color coding. Waveforms, readouts, and inputs are color matched to increase productivity and reduce operating errors.

Digital Phosphor. A Digital Phosphor Oscilloscope can clearly display intensity modulation in your signals. The oscilloscope automatically overlays subsequent acquisitions and then decays them to simulate the writing and decay of the phosphor in an analog oscilloscope CRT (cathode-ray tube). The feature results in an intensity-graded or color-graded waveform display that shows the information in the intensity modulation.

Fit to Screen. The Digital Phosphor technology performs the compression required to represent all record points on the screen, even at the maximum record length settings.

Zoom. To take advantage of the full resolution of the oscilloscope you can zoom in on a waveform to see the fine details. Both vertical and horizontal zoom functions are available.

Cursors. Use cursors to take simple voltage, time, and frequency measurements.

Trigger Features

Convenience Features

Automatic Measurements. Choose from a large palette of amplitude, time, and histogram measurements. You can customize the measurements by changing reference levels or by adding measurement gating.

Simple and Advanced Trigger Types. Choose simple edge trigger or choose from eight advanced trigger types to help you capture a specific signal fault or event.

Dual Triggers. Use the A (main) trigger system alone or add the B trigger to capture more complex events. You can use the A and B triggers together to set up a delay-by-time or delay-by-events trigger condition.

Autoset. Use Autoset to quickly set up the vertical, horizontal, and trigger controls for a usable display.

Touch Screen Interface. (Optional) You can operate all oscilloscope functions (except the power switch) from the touch screen interface. You can also install a mouse and keyboard to use the interface.

TDS5000 Series Service Manual

1- 3

Specifications

Toolbar or Menu Bar. You can choose a toolbar operating mode that is optimized for use with the touch screen, or a PC-style menu-bar operating mode that is optimized for use with a mouse.

Open Desktop. The oscilloscope is built on a Microsoft Windows software platform; the oscilloscope application program starts automatically when you apply power to the instrument. You can minimize the oscilloscope application and take full advantage of the built-in PC to run other applications. Moving waveform images and data into other applications is as simple as a copy/paste operation.

Dedicated Front Panel Controls. The front panel contains knobs and buttons to provide immediate access to the most common oscilloscope controls. Separate vertical controls are provided for each channel. The same functions are also available through the screen interface.

Data Storage and I/O. The oscilloscope has a removable hard disk drive, a floppy disk drive, and a CD-ROM reader or optional CD-R/W drive that can be used for storage and retrieval of data. The oscilloscope has GPIB, USB, Parallel. RS232, and Ethernet ports for input and output to other devices.

Specification Tables

Online Help. The oscilloscope has a complete online help system that covers all its features. The help system is context sensitive; help for the displayed control window is automatically shown if you touch the help button. Graphical aids in the help windows assist you in getting to the information you need. You can also access the help topics through a table of contents or index.

Table 1- 2: Channel input and vertical specifications

Characteristic Description

Input coupling DC, AC, and GND

Input channels Two or four, all identical

Input impedance, DC coupled 1MΩ ± 1.0% in parallel with 18 pF ±2pF

50 Ω ±2.5%

VSWR: TDS5052 and TDS5054: ≤1.6:1 typical from DC to 500 MHz TDS5104 ≤ 1.5:1 typical from DC to 1 GHz

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TDS5000 Series Service Manual

Table 1- 2: Channel input and vertical specifications (Cont .)

Characteristic Description

Maximum voltage at input BNC (1 MΩ)

150 V

CAT I, and ≤ 400 peak

RMS

For steady state sinusoidal waveforms, derate at 20 dB/decade above 200 kHz to 9 V above

Specifications

at 3 MHz and

RMS

Maximum voltage at input BNC

, ±30 V peak

RMS

(50 Ω)

n Differential delay at input BNC ≤ 100 ps between any two channels with the coupling

settings and with the same scale settings ≥ 10 mV/div

Deskew, typical ±75 ns

n Channel-to-channel crosstalk ≥ 100:1 at 100 MHz, and ≥ 30:1 at the rated bandwidth

for any two channels with the same scale and coupling settings

Digitizers 8-bit resolution, separate digitizers for each channel

sample simultaneously

Sensitivity range 1MΩ: 1 mV/div to 10 V/div, in a 1-2-5 sequence

50 Ω: 1 mV/div to 1 V/div, in a 1-2-5 sequence

Fine adjustment available with ≤1% resolution

n Analog bandwidth DC 50 Ω coupling, bandwidth limit set to Full, operating

ambient ≤30 °C, derated by 2.5 MHz/°C above 30 °C

SCALE range Bandwidth

TDS5052/TDS5054 1mV/divto1.99mV/div DC to 175 MHz

2mV/divto4.98mV/div DC to 300 MHz

5mV/divto1V/div DC to 500 MHz

TDS5000 Series Service Manual

TDS5104 1mV/divto1.99mV/div DC to 175 MHz

2mV/divto1V/div DC to 1 GHz

Analog bandwidth limit, typical Selectable between 20 MHz, 150 MHz, or Full

Lower frequency limit, AC coupled <10Hzfor1MΩ, reduced by a factor of ten when using

a 10X probe; <200 kHz for 50 Ω

1- 5

Specifications

Table 1- 2: Channel input and vertical specifications (Cont .)

Characteristic Description

Calculated rise time, typical DC 50 Ω coupling, bandwidth limit set to Full

SCALE range Rise time

TDS5052/TDS5054 1mV/divto1.99mV/div 2.29 ns

2mV/divto4.98mV/div 1.33 ns

5mV/divto1V/div 800 ps

TDS5104 1mV/divto1.99mV/div 2.29 ns

2mV/divto1V/div 400 ps

Step response settling errors, typi

Bandwidth limit set to Full

SCALE range and step amplitude

1 mV/div to 99.5 mV/div, with ≤ 2Vstep

100 mV/div to 1 V/div, with ≤ 20 V step

1.01 V/div to 10 V/div, with ≤ 200 V step

Settling error at time after step

20 ns: ≤ 0.5%

100 ns: ≤ 0.2%

20 ms: ≤ 0.1%

20 ns: ≤ 1.0%

100 ns: ≤ 0.5%

20 ms: ≤ 0.2%

20 ns: ≤ 1.0%

100 ns: ≤ 0.5%

20 ms: ≤ 0.2%

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TDS5000 Series Service Manual

Table 1- 2: Channel input and vertical specifications (Cont .)

Characteristic Description

Position range ± 5 divisions

Offset range 1MΩ coupling

SCALE range Offset range

1 mV/div to 99.5 mV/div ±1V

100 mV/div to 1V/div ±10 V

1.01 V/div to 10 V/div ±100 V

TDS5052/5054 50 Ω coupling

SCALE range Offset range

1 mV/div to 99.5 mV/div ±1V

100 mV/div to 1 V/div ±10 V

TDS5104 50 Ω coupling

SCALE range Offset range

Specifications

1mV/divto50mV/div ±0.5 V

50.5 mV/div to 99.5 mV/div ±0.25 V

100 mV/div to 500 mV/div ±5V

505 mV/div to 1 V/div ±2.5 V

Offset accuracy SCALE range Offset range

1mV/divto9.95mV/div ±[(0.2% ×| net offset |) +

1.5 mV + (0.1 div ×V/div setting)]

10 mV/div to 99.5 mV/div ±[(0.35% ×| net offset |) +

1.5 mV + (0.1 div ×V/div setting)]

100 mV/div to 1.0 V/div ±[(0.35% ×| net offset |) +

15 mV + (0.1 div ×V/div setting)]

1.01 V/div to 10 V/div ±[(0.25% ×| net offset |) + 150 mV + (0.1 div ×V/div setting]

At temperatures above 40 °C,

±[(0.75% ×| net offset |) + 150 mV + (0.1 div ×V/div setting)]

TDS5000 Series Service Manual

Offset accuracy where, net offset = offset -- ( posit ion × volts/division)

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Specifications

Table 1- 2: Channel input and vertical specifications (Cont .)

Characteristic Description

DC gain accuracy, Sample or Average acquisition mode

DC voltage measurement accuracy Measurement type DC accuracy (in volts)

±1.5% + 1.0% × |net offset /offset range|

TDS5104: ±3% + 1.0% × |net offset /offset range| for 2mV/div--3.98mV/div

Refer to Offset Range specifications

Sample acquisition mode, typical

Absolute measurement of any waveform point, and High, Low, Max, and Min measurements

Delta voltage measurement between any two points acquired under the same setup and ambient conditions, and all other automatic measurements

±[1.5% + 1.0% × |net offset /offset range|× |reading -- net offset| + offset accuracy + (0.13 div × V/div setting) + 0.6 mV]

TDS5104: 2 mV/div --

3.98 mV/div ±[1.5% + 3.0% × |net offset /offset range|× |reading -- net offset| + offset accuracy + 0.13 div ×V/div setting + 0.6 mV]

±[1.5% + 1.0% × |net offset /offset range|× |reading -- net offset| + (0.26 div × V/div setting) +

1.2 mV]

TDS5104: 2 mV/div --

3.98 mV/div ±[1.5% + 3.0% × |net offset /offset range|× |reading -- net offset| + 0.26 div ×V/div setting +1.2mV]

1- 8

where, net offset = offset -- ( posit ion × volts/division)

TDS5000 Series Service Manual

Table 1- 2: Channel input and vertical specifications (Cont .)

Characteristic Description

n Average acquisition mode (≥16 averages)

Absolute measurement of any waveform point, and High, Low, Max, and Min measurements

Delta voltage measurement between any two points acquired under the same setup and ambient conditions, and all other automatic measurements

where, net offset = offset -- ( posit ion × volts/division)

Specifications

±[1.5% + 1.0% × |net offset /offset range|× |reading -- net offset| + offset accuracy + 0.06 div × V/div]

TDS5104: 2 mV/div --

3.98 mV/div ±[1.5% + 3.0% × |net offset /offset range|× |reading -- net offset| + offset accuracy + 0.06 div × V/div]

±[1.5% + 1.0% × |net offset /offset range|× |reading -- net offset| + (0.1 div × V/div setting) +

0.3 mV]

TDS5104: 2 mV/div --

3.98 mV/div ±[1.5% + 3.0% × |net offset /offset range|× |reading -- net offset| +0.1div× V/div +0.3mV]

TDS5000 Series Service Manual

Nonlinearity, typical < 1 LSB differential, < 1 LSB integral, independently

based

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Specifications

Table 1- 2: Channel input and vertical specifications (Cont .)

Characteristic Description

Effective bits, typical Sine wave input at the indicated frequency and pk-pk

amplitude, at 50 mV/division and 25 °C

Signal and input conditions Effective bits

TDS5052, TDS5054 1MHz,9.2div,5GS/s

sample rate, Sample acquisition mode

1MHz,9.2div,10MS/s sample rate, HiRes acquisition mode

500 MHz, 6.5 div, 5 GS/s sample rate, Sample acquisition mode

TDS5104 1MHz,9.2div,5GS/s

sample rate, Sample acquisition mode

1MHz,9.2div,10MS/s sample rate, HiRes acquisition mode

1GHz,6.5div,5GS/s sample rate, Sample acquisition mode

6.8 bits

9.1 bits

6.5 bits

6.6 bits

9.0 bits

4.7 bits

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TDS5000 Series Service Manual

Specifications

Table 1- 3: Horizontal and acquisition system specifications

Characteristic Description

Acquisition modes Sample, Peak detect, Hi Res, Average, and Envelope

Acquisition rate up to 100,000 waveforms per second in Fast Acquisition

mode

up to 130 waveforms per second with Fast Acquisition off

Minimum record length 500 points

Maximum record length Depends on the number of active channels and the

amount of memory installed

Standard 100,000 points (3 or 4 channels)

200,000 points (1 or 2 channels) 400,000 points (1 channel)

Option 1M installed 500,000 points (3 or 4 channels)

1,000,000 points (1 or 2 channels) 2,000,000 points (1 channel)

Option 2M installed 2,000,000 points (3 or 4 channels)

4,000,000 points (1 or 2 channels) 8,000,000 points (1 channel)

Real-time sample rate range Number of channels

acquired

1 1.25 S/s to 5 GS/s

2 1.25 S/s to 2.5 GS/s

3or4 1.25 S/s to 1.25 GS/s

Equivalent-time sample rate or interpolated waveform rate range

Seconds/division range 200 ps/div to 40 s/div

Horizontal delay range 16 ns to 250 s

n Long term sample rate and delay time accuracy

RMS aperture uncertainty, typical ≤ [3 ps + (0.1 ppm × record duration)]

2.5 GS/s to 250 GS/s

Equivalent-time acquisition can be enabled or disabled. When disabled, waveforms are interpolated at the fastest time base settings.

±15 ppm over any ≥ 1 ms interval

Sample rate range

TDS5000 Series Service Manual

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Specifications

Table 1- 3: Horizontal and acquisition system specifications (Cont.)

Characteristic Description

n Delta time measurement accuracy

For a single channel, with signal amplitude > 5 div, reference level set at 50%, interpolation set to sin(x)/x, volts/division set to ≥ 5 mV/div, with (displayed risetime)/(sample interval) ratio between 1.4 and 4, where sample interval = 1/(real-time sample rate)

Conditions Accuracy

Single shot signal, Sample or Hi Res acquisition mode, Full bandwidth

Average acquisition mode, ≥100 averages, Full bandwidth

± (15 ppm × | reading | +

0.3 sample intervals)

± (15 ppm × | reading | + 20 ps)

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TDS5000 Series Service Manual

Table 1- 4: Trigger specifications

Characteristic Description

Auxiliary trigger input resistance, typical

≥ 1.5 kΩ

Specifications

Maximum trigger input voltage, typical

n Edge Trigger Sensitivity Trigger Source Sensitivity

TDS5052, TDS5054 Any channel, DC coupled 0.35 div from DC t o

TDS5104 Any channel, DC coupled 0.35 div from DC t o

Edge trigger sensitivity, typical All sources, for vertical scale settings ≥10 mV/div and

±20 V (DC or peak AC)

50 MHz, increasing to 1 div at 500 MHz

Auxiliary input 400 mV from DC to

50 MHz, increasing to 750 mV at 100 MHz

50 MHz, increasing to 1 div at 1 GHz

Auxiliary input 400 mV from DC to

50 MHz, increasing to 750 mV at 100 MHz

≤1V/div

Trigger coupling Sensitivity

NOISE REJ 3×the DC-coupled limits

AC Same as DC-coupled limits

for frequencies ≥60 Hz, attenuates signals <60 Hz

TDS5000 Series Service Manual

HF REJ 1.5×the DC-coupled limits

from DC to 30 kHz, attenuates signals >30 kHz

LF REJ 1.5×the DC-coupled limits

for frequencies ≥80 kHz, attenuates signals <80 kHz

Advanced trigger sensitivity, typical For all trigger types except Edge, with vertical scale

settings ≥10 mV/div and ≤1V/div

1.0 div, from DC to 500 MHz

Event count sensitivity, typical For sequential trigger delayed by events, with vertical

scale settings ≥10 mV/div and ≤1V/div

1.0 div, from DC to 500 MHz

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Specifications

Table 1- 4: Trigger specifications (Cont.)

Characteristic Description

Trigger level or threshold range Trigger Source Sensitivity

Any channel ±10 divisions from center of

screen

Auxiliary input ±8V

Line fixedatzerovolts

Trigger level or threshold accuracy, typical

Set level to 50% function Operates with signals ≥30 Hz

Trigger position error, typical Edge trigger, DC coupling, for signals having a slew rate

Trigger jitter, typical σ = 8 ps RMS

B Event (Delayed) trigger Trigger After Time Trigger on nthEvent

Range Delay time = 16 ns to

Edge trigger, DC coupling, for signals having rise and fall times ≤20 ns

Trigger Source Accuracy

Any channel ± [(2% ×| setting -- net

offset | ) + (0.3 div × volts/ div setting) + offset accuracy]

Auxiliary Not calibrated or specified

where, net offset = offset -- ( posit ion × volts/division)

at the trigger point of ≥ 0.5 div/ns

Acquisition mode Error

Sample, Average ± (1 displayed point + 1ns)

Envelope ± (2 displayed points + 1ns)

Event count = 1 to 10

250 s

1- 14

Minimum time between arm (A Event) and trigger (B Event), typical

Minimum pulse width, typical

Maximum frequency, typical — B event frequency

2 ns from the end of the time period to the B trigger event

— B event width ≥1ns

2 ns between the A trigger event and the first B trigger event

≤500 MHz

TDS5000 Series Service Manual

Specifications

Table 1- 4: Trigger specifications (Cont.)

Characteristic Description

Advanced trigger timing For vertical scale settings ≥10 mV/div and ≤1V/div

Minimum recognizable event width or time

Glitch type Minimum glitch width = 1 ns 2 ns + 5% of glitch width

Runt or window type Minimum runt width = 2 ns 2ns

Runt or window type (time qualified)

Runt or window type (logic qualified)

Width type Minimum difference

Timeout type Minimum timeout time =

Transition type Minimum transition time =

Pattern type, typical Minimum time the pattern is

State type, typical Minimum true time before

Minimum runt width = 2 ns 8.5 ns + 5% of runt width

between upper and lower limits = 1 ns

1ns

600 ps

true = 1 ns

clock edge = 1 ns

Minimum true time after clock edge = 1 ns

Minimum re-arm time to recognize next event

setting

2 ns + 5% of upper limit setting

2 ns + 5% of timeout setting

8.5 ns + 5% of transition time setting

1ns

TDS5000 Series Service Manual

Setup/Hold type, typical Minimum clock pulse width

from active edge to inactive edge

3 ns + hold time setting 2ns

Setup and Hold parameters Limits

Setup time (time from data transition to clock edge)

Hold time (time from clock edge to data transition)

Setup time + Hold time (algebraic sum of the two settings)

Advanced trigger timer ranges Limits

Glitch type 1nsto1s

Runt or window type, wider than

1nsto1s

Minimum clock pulse width from inactive edge to active edge

--100 ns minimum +100 ns maximum

--1 ns minimum +102 ns maximum

+2 ns minimum +202 ns maximum

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Specifications

Table 1- 4: Trigger specifications (Cont.)

Characteristic Description

Runt or window type, time qualified

Width type 1nsto1s

Timeout type 1nsto1s

Transition type 1nsto1s

Pattern type 1nsto1s

Setup/Hold type Setup and Hold timers Limits

1nsto1s

Setup time (time from data transition to clock edge)

Hold time (time from clock edge to data transition)

Setup time + Hold time (algebraic sum of the two settings)

n Advanced trigger timer accuracy For Glitch, Timeout, or Width types

Time range Accuracy

1 ns to 500 ns ±(20% of setting + 0.5 ns)

520 ns to 1 s ±(0.01% of setting +

Trigger holdoff range 1.5 sto12s,

minimum resolution is 8 s for settings ≤1.2 ms

--100 ns to +100 ns

--1 ns to +100 ns

+2 ns to +200 ns

100 ns)

Table 1- 5: Display specifications

Characteristic Description

Display type 211.2 mm (W)× 158.4 mm (H), 264 mm (10.4 in)

diagonal, liquid crystal active-matrix color display

1- 16

Display resolution 640 horizontal × 480 vertical pixels

Pixel pitch 0.33 mm horizontal, 0.33 mm vertical

Contrast ratio, typical 150:1

Response time, typical 50 ms, black to white

Display refresh rate 59.94 frames per second

Displayed intensity levels Supports Windows SVGA high-color mode (16- or 24-bit)

TDS5000 Series Service Manual

Table 1- 6: Input/output port specifications

Characteristic Description

n Probe Compensator Output Front-panel terminals

Output voltage Frequency

Specifications

1.0 V (from base to top) ±

1 kHz ± 5%

1.0% into a ≥ 10 kΩ load

n Analog Signal Output amplitude Rear-panel BNC connector, provides a buffered version of

the signal that is attached to the channel 3 input

20 mV/div ± 20%intoa1MΩ load 10 mV/div ± 20% into a 50 Ω load

Analog Signal Output bandwidth,

100 MHz into a 50 Ω load

typical

n Auxiliary Output levels Rear-panel BNC connector, provides a TTL-compatible,

negative-polarity pulse for each A or B trigger (selectable)

high V

out

≥2.5 V into open circuit, ≥1.0 V into 50 Ω load

low (true)

out

≤0.7 V with ≤4masink, ≤0.25 V into 50 Ω load

Auxiliary Output pulse width, typical Pulse width varies, 1 s minimum

External Reference Input Rear-panel BNC connector

9.8 MHz to 10.2 MHz

200 mV p-p to 7 V p-p

>1.5 kΩ in series with ~10 nF DC blocking capacitor

TDS5000 Series Service Manual

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Specifications

Table 1- 6: Input/output port specifications (Cont.)

Characteristic Description

Side-panel I/O ports Ports located on the rear panel

Parallel port (IEEE 1284) DB-25 connector, supports the following modes:

-standard (output only) bidirectional (PS-2 compatible) bidirectional enhanced parallel port (IEEE 1284 standard, mode 1 or mode 2, v 1.7)

-bidirectional high-speed extended capabilities

Audio ports Miniature phone jacks for stereo microphone input and

stereo line output

USB port (2) Allows connection or disconnection of USB keyboard,

mouse and/or other devices while scope power is on

Keyboard port PS-2 compatible, oscilloscope power must be off to make

connection

Mouse port PS-2 compatible, oscilloscope power must be off to make

connection

LAN port RJ-45 connector, supports 10 base-T and 100 base-T

Serial port DB-9 COM1 port, uses NS16C550-compatible UARTS,

transfer speeds up to 115.2 kb/s

SVGA video port Upper video port, DB-15 female connector, connect a

second monitor to use dual-monitor display mode, supports Basic requirements of PC99 specifications

GPIB port IEEE 488.2 standard interface

Scope VGA video port Lower video port, DB-15 female connector, 31.6 kHz

sync, EIA RS-343A compliant, connect to show the oscilloscope display, including live waveforms, on an external monitor

Table 1- 7: Data storage specifications

Characteristic Description

CD-ROM Side-panel CD-ROM drive, read only. CD R/W optional

Floppy disk Front-panel 3.5 in floppy disk drive, 1.44 MB capacity

Hard disk Internal hard disk drive, ≥ 10 GB capacity

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TDS5000 Series Service Manual

Specifications

Table 1- 8: Power source specifications

Characteristic Description

Source voltage and frequency 100 to 240 V ±10%,47Hzto63Hz

Power consumption ≤220 Watts

Overvoltage Category Overvoltage Category II (as defined in IEC61010-1/A2)

Table 1- 9: Mechanical specifications

Characteristic Description

Weight

Benchtop configuration 22 lbs (10 kg) oscilloscope only

55 lbs (25 kg) when packaged for domestic shipment

Rackmount kit 4 lbs (1.8 kg) rackmount conversion kit

11 lbs (5 kg) kit packaged for domestic shipment

Dimensions

Benchtop configuration 11.2 in (284.5 mm) height,

12.8 in (325.1 mm) with feet extended

17.6 in (447 mm) width

11.35 in (288.3 mm) depth

Rackmount configuration (Option 1R)

Cooling Fan-forced air circulation with no air filter.

Required clearances Top 0in(0mm)

Construction material Chassis parts are constructed of aluminum alloy, front

10.5 in (267 mm) height 19 in (483 mm) width

11.35 in (288.3 mm) depth

Bottom 0.25 in minimum or

0 in (0 mm) when standing on the feet

Left side 3in(76mm)

Right side 0in[5in(126mm)required

to access CDROM]

Front 0in(0mm)

Rear 0in(0mm)

panel is constructed of plastic laminate, circuit boards are constructed of glass laminate, outer shell is molded and textured from a polycarbonate/ABS blend

TDS5000 Series Service Manual

1- 19

Specifications

Table 1- 10: Environmental specifications

Characteristic Description

Temperature

Operating +5 °Cto+45°C

Nonoperating -- 2 0 °Cto+60°C

Humidity

Operating 20% to 80% relative humidity with a maximum wet bulb

temperature of +29 °C at or below +45 °C, noncondensing

Upper limit derated to 30% relative humidity at +45 °C

Nonoperating With no diskette in floppy disk drive

5% to 90% relative humidity with a maximum wet bulb temperature of +29 °C at or below +60 °C, noncondensing

Upper limit derated to 20% relative humidity at +60 °C

Altitude

Operating 10,000 ft (3,048 m)

Nonoperating 40,000 ft (12, 190 m)

Random vibration

Operating 0.22 g

Nonoperating 2.28 g

from 5 Hz to 500 Hz, 10 minutes on each axis

RMS

from 5 Hz to 500 Hz, 10 minutes on each axis

RMS

Shock, nonoperating 30 g (11 ms hal f-sine wave or less)

1- 20

TDS5000 Series Service Manual

Table 1- 11: Certifications and compliances

Category Standards or description

Specifications

EC Declaration of Conformity -EMC

Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Union:

EN 61326 Emissions

EN 61326 Immunity

1, 3

1, 2, 4

Class A Radiated and Conducted Emissions

IEC 61000-4-2 Electrostatic Discharge Immunity

±4 kV contact discharge, ±8 kV air discharge, performance criterion B

IEC 61000-4-3 RF field immunity

3V/m,80MHzto1GHz, 80% amplitude modulated with a 1 kHz sinewave performance criterion A

IEC 61000-4-4 Electrical Fast Transient/Burst Immunity

1 kV on AC mains, 500 V on !/O cables, performance criterion C

IEC 61000-4-5 AC Surge Immunity

500 V differential mode, 1 kV common mode, performance criterion B

IEC 61000-4-6 RF Conducted Immunity

3 V, 150 kHz to 80 MHz, amplitude modulated with a 1 kHz sinewave, performance criterion A

IEC 61000-4-11 AC Mains Voltage Dips and Interruption Immunity

100% reduction for one cycle, performance criterion B

EN 61000-3-2 Power Harmonic Current Emissions

If interconnect cables are used, they must be low-EMI shielded cables such as the following Tektronix part numbers or their equivalents: 012-0991-01, 012-0991-02 or 012-0991-03 GPIB Cable; 012-1213-00 (or CA part number 0294-9) RS-232 Cable; 012-1214-00 Centronics Cable; or LCOM part number CTL3VGAMM-5 VGA Cable.

The performance criteria for when the oscilloscope is subjected to the conditions described above are defined as follows: A—≤0.2 division waveform displacement or ≤0.4 division increase in peak-to-peak noise B — temporary, self-recoverable degradation or loss of performance is allowed, but no change of actual operating state or loss of stored data is allowed C — temporary loss of function is allowed provided that the function is self recoverable or can be restored by the operation of the controls

Radiated emissions may exceed the levels specified in EN 61326 when this oscilloscope is connected to a test object.

USB mouse and keyboard only, performance criterion C. Normal USB keyboard or mouse operation can be restored by unplugging and reconnecting the USB connector to the oscilloscope. If the USB mouse, front--panel controls, or touch screen do not respond, press the On/Standby switch for five seconds to cycle power.

FCC Radiated and conducted emissions do not exceed the levels specified in FCC47 CFR, Part 15,

Subpart B, for Class A equipment.

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Specifications

Table 1- 11: Certifications and compliances (cont.)

Category Standards or description

EC Declaration of Conformity -Low Voltage

U.S. Nationally Recognized Testing Laboratory Listing

Canadian Certification CAN/CSA C22.2, Safety requirements for electrical equipment for measurement,

Additional Compliance IEC61010-1/A2 Safety requirements for electrical equipment for measurement,

Installation (Overvoltage) Category

Pollution Degree A measure of the contaminates that could occur in the environment around and within a product.

Compliance was demonstrated to the following specification as listed in the Official Journal of the European Union:

Low Voltage Directive 73/23/EEC, amended by 93/68/EEC

EN 61010-1/A2:1995 Safety requirements for electrical equipment f or measurement

control and laboratory use.

UL3111-1, First Edition Standard for electrical measuring and test equi pment.

No. 1010.1-92 control, and laboratory use.

control, and laboratory use.

Terminals on this product may have different inst allation (overvoltage) category designati ons. The installation categories are:

CAT III Distribution-level mains (usually permanently connected). Equipment at this level is

typically in a fixed industrial location.

CAT II Local-level mains (wall sockets). Equipment at this level includes appliances, portable

tools, and similar products. Equipment is usually cord-connected.

CAT I Secondary (signal level) or battery operated circuits of electronic equipment.

Typically the internal environment inside a product is considered to be t he same as the external. Products should be used only in the environment for which they are rated.

Safety Certification Compliance

Equipment Type Test and measuring

Safety Class Class 1 (as defined in IEC 61010-1/A2) -- grounded product

Pollution Degree Pollution Degree 2 (as defined in IEC 61010-1/A2). Note: Rated for indoor use only.

Pollution Degree 2 Normally only dry, nonconductive pollution occurs. Occasionally a

temporary conductivity that is caused by condensation must be expected. This location is a typical office/home environment. Temporary condensation occurs only when the product is out of service.

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TDS5000 Series Service Manual

Operating Information

This chapter covers installation information and basic operation instructions.

Installation

The basic operating software is already installed on the hard disk. Refer to Software Installation on page 2--5 for instructions on reinstalling the software.

CAUTION. Be sure you have an emergency startup disk. You will need this disk if you ever have to reinstall the Windows operating system. Refer to Create an Emergency Startup Disk on page 2--4.

Before You Start

Environmental

Considerations

Verify that all parts and accessories for the oscilloscope are available. Use the graphical packing list that came with the oscilloscope to determine the necessary parts and accessories. You should also verify that the following items are available:

H the correct power cords

H the product-software CD set that includes installation copies of the software

installed on the oscilloscope

H all the accessories necessary to operate the oscilloscope

The oscilloscope is designed to operate on a bench or on a cart in the normal position (on the bottom feet). For proper cooling, at least three inches (7.62 cm) of clearance is required on the left side of the oscilloscope. If you operate the oscilloscope while it is resting on the rear feet, make sure that you properly route any cables coming out of the rear of the oscilloscope to avoid damaging them.

CAUTION. Keep the bottom and sides of the oscilloscope clear of obstructions to ensure proper cooling.

Tables 1--8 and 1--10 on pages 1--19 and 1--20 list the operating requirements for the oscilloscope. Power source, temperature, humidity, and altitude are listed.

TDS5000 Series Service Manual

2- 1

Operating Information

Connect the Peripherals

The peripheral connections are the same as those you would make on a personal computer. The connection points are shown in Figure 2--1 on page 2--3. See Table 2--1 for additional connection information.

Table 2- 1: Additional accessory connection information

Item Description

Monitor If you use a non-standard monitor, you may need to change the

the display settings to achieve the proper resolution for your monitor.

External Printer Connect the printer to the EPP (enhanced parallel port)

connector directly. If your printer has a DB-25 connector, use the adapter cable that came with your printer to connect to the EPP connector. For information on printer usage, see Printing Waveforms in your user oscilloscope manual.

Rackmount Refer to the TDS5000 Rackmount Installation Instructions for

information on installing the rackmount kit.

Other Refer to the Application release notes on your product CD set

for possible additional accessory installation information not covered in this manual.

NOTE. We recommend that you plug USB devices directly into the USB connectors on the oscilloscope chassis for improved reliability rather than connecting the devices serially in a chain. If your mouse locks up, disconnect and reconnect the USB connector to restore normal operation. If the oscilloscope front panel and/or touch screen do not respond, press the On/Standby switch for at least 5 seconds to cycle power.

2- 2

TDS5000 Series Service Manual

WARNING. Before installing accessories to connectors (mouse, keyboard, etc.), power off the oscilloscope. See Powering Off the Oscilloscope on page 2--4.

Description Icon/Label Locations

Keyboard ..............

Mouse..................

USB..................

Monitor (PC only, for dual display

operation) ......

Operating Information

Printer.............

RS-232..........

Network................

Audio MIC ............. ...

Audio line out...............

Audio line in ...............

GPIB........

Oscilloscope monitor (large-screen oscilloscope display). . .

Figure 2- 1: Locations of peripheral connect ors on the side panel

TDS5000 Series Service Manual

2- 3

Operating Information

Power On the Instrument

Switch

Follow these steps to power on the instrument.

CAUTION. Connect the keyboard, mouse, and other accessories before applying power to the product.

1. Connect the power cord.

2. If you have an external monitor, connect the power cord and power on the

monitor.

3. Press the On/Standby switch to power on the instrument (see Figure 2--2 for

the switch location).

4. Wait for the boot routine and low-level self test to complete.

Powering Off the

Oscilloscope

Create an Emergency

Startup Disk

Figure 2- 2: On/Standby switch location

The oscilloscope has a built-in soft power-off function that safely powers off the oscilloscope when you press the On/Standby switch.

To completely remove power to the instrument, press the On/Standby switch, and then remove the power cord from the rear panel.

Now that you have completed the basic installation process, you should create an emergency startup disk that you can use to restart your instrument in case of a major hardware or software failure. You should create this disk, and then store it in a safe place.

CAUTION. Create this disk and store it in a safe place. It may allow you to recover your Windows installation without rebuilding the entire instrument hard disk.

The emergency startup disk contains basic files to restart your instrument. It also contains files to check and format the hard disk.

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TDS5000 Series Service Manual

Operating Information

Follow these steps to create the emergency startup disk:

1. Minimize the oscilloscope application: select Minimize from the File menu.

2. Select the Windows Start button, point to Settings, and then click Control

Panel.

3. In the Control Panel, double-click Add/Remove Programs.

4. Click the Startup Disk tab.

5. Insert a floppy disk into the disk drive and follow the on-screen instructions

to create the startup disk.

Software Installation

This section describes how to install the system software found on the productsoftware CD that accompanies this product. The instrument ships with the product software installed, so only perform these procedures if reinstallation becomes necessary.

Software Release Notes. Read the software release notes README.TXT ASCII file on the product-software CD before performing installation procedures. This file contains additional installation and operation information that supercedes other product documentation.

To view the README.TXT file, open the Notepad Windows accessory and open the file on the product-software CD. After installation, you can also read the copy from a directory on the product:

C:\Program Files\Tds5000\ReadMe.txt

Operating System Restoration. Use the procedure that accompanies your

Operating System Restore CD should reinstalling system software become necessary.

The compact disc contains the files necessary to restore the Windows operating system and necessary drivers for the oscilloscope.

TDS5000 Series Service Manual

The Windows operating system and drivers are factory installed on the oscilloscope hard disk. The compact disc serves as a backup in the event that you have to rebuild the hard drive. You must restore the Windows operating system before you can install the oscilloscope firmware and other product software.

Application Installation. Use the procedures that accompany your Product Software CD should reinstalling the oscilloscope application software become

necessary.

The compact disc contains the files necessary to restore the oscilloscope application and other software for the oscilloscope.

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Operating Information

Software Lock for Upgrades. You can use the LockUpgrades utility to prevent users from installing unauthorized firmware upgrades on the instrument. This utility requires that a user enter a password before an upgrade can be installed. To use the utility, run the LockUpgrades.exe file, and follow the on-screen instructions. The LockUpgrades.exe file is in the following directory:

C:\Program Files\Tektronix\TekScope

NOTE. Using the Operating System Restore CD to reinstall the operating system resets the LockUpgrades utility to the default setting and allows firmware upgrades without password protection.

This section covers basic operation information so that you can operate and prepare to service the instrument.

Back Up User Files

You should always back up your user files on a regular basis. Use the Microsoft Backup tool to back up files stored on the hard disk. The Backup tool is located in the System Tools folder in the Accessories folder.

1. Minimize the oscilloscope application by selecting Minimize from the File

menu.

2. Select the Windows Start button, point to Programs, Accessories, System

Tools, and then click Backup.

3. Use the Microsoft Backup tool to select your backup media and to select the

files and folders that you want to back up. Use the online help for information on using the Backup tool. You can back up to the floppy drive, or to a third-party storage device over the printer port (side panel).

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TDS5000 Series Service Manual

Operating Information

User Interface Map

Menu Bar: Access to data I/O,

printing, online help system, and

oscilloscope functions here

Status Bar: Display of

acquisition status, mode, and

number of acquisitions; trigger

status; date; and time

Display: Live, reference, & math

waveforms display here, along

with cursors

Waveform Handle: Touch and drag

to change vertical position of

waveform. Touch the handle and

change the position and scale using

the multipurpose knobs

Controls Status: Quick reference to

vertical, horizontal, and trigger

selections, scale, and parameters

This section shows the main parts of the user interface.

Figure 2--3 shows the oscilloscope in the Menu bar mode. All features of the oscilloscope can be accessed through the menus using a mouse or the optional touch screen.

When the oscilloscope is in the Tool bar mode, most of the control windows can be accessed by touching buttons at the top of the display.

Buttons/Menu. Touch to toggle between tool-bar and menu-bar modes

Multipurpose Knob Readouts. Adjust

parameters controlled by multipurpose knobs

Readouts: Display cursor readouts and measurement readouts in this area, selectable from the menu bar or tool bar

If a control menu is displayed, these readouts move to the graticule area

Figure 2- 3: User interface

TDS5000 Series Service Manual

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Operating Information

Front Panel I/O Map

Rear Panel I/O Map

Figure 2--4 shows the input/output connectors and floppy disk drive location.

Front panel

Floppy disk drive

Auxiliary

trigger input

Probe comp output

Ground terminalChannel inputs

Figure 2- 4: Locations of input/output connectors on the front panel

Figure 2--5 shows the input/output connectors on the rear panel.

Rear panel

EXT REF

AUX OUT

SIGNAL OUT

scale and offset controlled

by CH3 controls

Figure 2- 5: Locations of connectors on t he rear panel

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TDS5000 Series Service Manual

Operating Information

Front Panel Controls Map

Many of the oscilloscope functions can be controlled directly from the front panel controls or in conjunction with the touch-screen interface.

Use these buttons to start and stop acquisition or start a single

acquisition sequence. The ARM, READY, and TRIG’D lights

Turn knob to adjust waveform intensity.

Press button to turn Fast Acquisition on or off.

Use these knobs and buttons to set the trigger parameters. Push

ADVANCED to display additional trigger functions.

Press to return settings to default values.

Horizontally scale, position, delay, and set record length

Press to automatically set up the vertical, horizontal, and trigger

controls based on selected channels.

show the acquisition status.

Press to turn cursors on or off.

Press to make a hard copy.

(resolution) of selected waveform.

Turn the multipurpose knobs to adjust parameters selected from

the screen interface. Press a Fine button to toggle between

normal and fine adjustment with its multipurpose knob.

Press to turn the touch screen on and off.

Press ZOOM to add a magnified graticule to the display. Press

Turn channel displays on and off. Vertically scale, position, or

HORIZ or VERT to select the axis to magnify.

change the input termination.

Figure 2- 6: Front panel controls

TDS5000 Series Service Manual

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Operating Information

Instrument Diagnostics

Do the following steps to verify the instrument passes the internal diagnostics.

1. Display the diagnostics menu:

H If the oscilloscope is in tool bar mode, touch the MENU button to put

the oscilloscope into the menu bar mode.

H Select Instrument Diagnostics . . . from the Utility menu.

2. Run the diagnostics.

H First disconnect any input signals from all four channels.

H Touch the Run button in the diagnostics control window.

3. Wait for the diagnostics to complete.

The internal diagnostics do an exhaustive verification of proper oscilloscope function. This verification may take several minutes to complete. When the verification is finished, the resulting status will appear in the diagnostics control window.

4. Verify that no failures are found. If any failures occur, use the “DIAG:RE-

SULTS:VERBOSE?” query for details on the errors.

Signal Path Compensation

Run the Signal Path Compensation.

NOTE. The oscilloscope must be warmed up to operating temperature. Signal Path Compensation is not valid until the oscilloscope Calibration Status reaches Temp status.

1. Select Instrument Calibration . . . from the Utility menu.

2. Verify that the instrument has had a twenty-minute warm-up before

continuing.

3. Touch the Calibrate button to start the routine.

4. Wait for the test to complete (the test may take several minutes to complete).

5. Verify that the word Pass appears under the Status label in the control

window.

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TDS5000 Series Service Manual

Operating Information

Using the Online Help

The user manual represents only part of the assistance available to you — the online help system, integrated as part of the oscilloscope user interface, provides quick-to-access support for operating this oscilloscope.

Two types of online help are available, the oscilloscope online help and the GPIB online programmer’s help. The oscilloscope online help provides information on all of the oscilloscope controls and procedures for doing typical tasks. The GPIB online programmer’s help is normally installed on a remote PC and provides information for controlling the oscilloscope via the GPIB. This section mainly discusses the online help for the oscilloscope.

Accessing Help in the Tool Bar Mode. When the oscilloscope is in the tool bar mode, touch the Help button in the upper right corner of the screen to display help on whatever control window is displayed. From within the Help window, you can access other help through tabs, links, or buttons. You can also touch the Help Topics button to display the standard Windows Contents, Index, and Find tabs.

Accessing Help in the Menu Bar Mode. When the oscilloscope is in the menu bar mode, you can access the help system from the drop-down help menu. Select Help on Window to display help on the current control window. Select Contents and Index to display the standard Windows Contents, Index, and Find tabs. You can also select other topics from the Help menu such as information on Technical Support or product specifications.

Moving the Help Topics to View the Oscilloscope Display. You may temporarily move any displayed help out of the way while you change control window settings. Touch the Minimize button in the help window to shrink the help window to a button that displays in the upper right corner of the display (with the label Restore Help). Touch the Restore Help button to restore the help window to its normal size.

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Operating Information

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TDS5000 Series Service Manual

Theory of Operation

This section describes the electrical operation of the oscilloscope. Figure 9--1 on page 9--2 shows the module interconnections.

Logic Conventions

The oscilloscope contains many digital logic circuits. This manual refers to these circuits with standard logic symbols and terms. Unless otherwise stated, all logic functions are described using the positive-logic convention: the more positive of the two logic levels is the high (1) state, and the more negative level is the low (0) state. Signal states may also be described as “true” meaning their active state or “false” meaning their nonactive state. The specific voltages that constitute a high or low state vary among the electronic devices.

Module Overviews

Module overviews describe the basic operation of each functional circuit block asshowninFigure9--1onpage9--2.

General

Input Signal Path

A PC motherboard and microprocessor system controls the oscilloscope. The oscilloscope features a VGA resolution flat-panel display, an optional transparent touch screen, and a front-panel with direct access to commonly used oscilloscope functions. You can also use the oscilloscope with a mouse pointing device or keyboard.

A signal enters the oscilloscope through a direct coaxial connection to the input connector, or a probe connected to the front panel.

Acquisition Board. The acquisition board conditions the input signals, samples them, converts them to digital signals, and controls the acquisition process under direction of the processor system. The acquisition system includes the multisource trigger, acquisition timebase, and acquisition-mode generation and control circuitry. The acquisition board is located in the bottom compartment of the oscilloscope. Two or four vertical channels are accommodated. All channels feature a Tekprobe Level 2 interface for additional front-end signal conditioning functions like high input-impedance real-time probes.

Processor System. The processor system uses a microprocessor that controls the acquisition system of the oscilloscope. The basic configuration supports two or

TDS5000 Series Service Manual

3- 1

Theory of Operation

four input channels labeled Ch 1 through Ch 4, provides an external trigger input, a trigger output, a Ch 3 signal output, and a probe compensation output.

Each acquisition channel is equipped with a processor that connects to the PAI (Processor Acquisition Interface), which in turn communicates with the microprocessor over the PCI bus.

Display Panel

Front Panel

Waveforms and menus are displayed on a 10.4 inch, color, active-matrix LCD (liquid crystal display) with an optional integral touch panel.

Display System. Text and waveforms are processed by different parts of the display circuitry. The display system (display adapter board and inverter board) sends the text and waveform information to the display panel.

Touch Panel (Optional). The display board sends information from the touch panel to the processor. Any changes in settings are reported to the processor system.

The PC motherboard reads the front-panel switches and encoders. Any changes in their settings are reported to the processor system. The PC motherboard also turns the LEDs on and off.

Menu Switches. Front-panel menu switches are also read by the PC motherboard. The touch screen processor sends any changes in menu selections to the processor system. The ON/STBY switch passes through the PC Interface board to the PC motherboard. The PC motherboard creates the signal sent to the power supply to toggle power.

3- 2

Floppy Drive. The floppy drive provides access to stored waveform data and

software to customize your oscilloscope.

PC Interface Board. The PC Interface board provides fast access to the Acquisition board and the display system. The PC motherboard reads the front-panel switches and encoders and implements any changes requested by their settings. The PC Interface board provides a GPIB interface through a side panel connector.

PC Motherboard. The PC motherboard provides standard Windows functionality and I/O port interfaces to the rear panel.

TDS5000 Series Service Manual

Theory of Operation

Side Panels

Power Supply

The hard drive and CD-ROM provide access to stored waveform data and software to customize your oscilloscope with your measurement needs. The GPIB port allows for external control of the oscilloscope.

You can make hardcopies on the GPIB, RS-232, and Centronics ports. The PC Interface board includes a VGA connector for an external monitor to display the oscilloscope screen.

The PC motherboard has two USB ports and one serial port on the side panel. A microphone input and earphone output exist on the PC motherboard. The Ethernet connector is RJ-45. Keyboard and mouse are both PS/2.

The power supply is a switching power converter with active power factor control. It supplies power to all of the circuitry in the oscilloscope.

The ON/STBY switch, located on the front panel, controls all of the power to the oscilloscope except for part of the circuitry in the standby power supply.

The power supply sends a Good signal to the processor system when the power supply voltages are within specifications.

Power is distributed through the PC Interface board and the Disk Drive Adapter board connectors.

Fans

Printer

The fan assembly provides forced air cooling for the oscilloscope. The fans are controlled by the microprocessor.

The optional internal thermal printer allows for quick hard copies of the screen display. The printer receives power and USB signals from the PC Interface board.

TDS5000 Series Service Manual

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Theory of Operation

3- 4

TDS5000 Series Service Manual

Performance Verification

Two types of Performance V erification procedures can be performed on this product: Brief Procedures and Performance Tests. You may not need to perform all of these procedures, depending on what you want to accomplish.

H To rapidly confirm that the oscilloscope functions and was adjusted properly,

just perform the brief procedures under Self Tests, which begin on page 4--5.

Advantages: These procedures are quick to do, require no external equipment or signal sources, and perform extensive functional and accuracy testing to provide high confidence that the oscilloscope will perform properly. They can be used as a quick check before making a series of important measurements.

H To further check functionality, first perform the Self Tests just mentioned;

then do the brief procedures under Functional Tests that begin on page 4--6.

Advantages: These procedures require minimal additional time to perform, require no additional equipment other than a 10X probe such as a P5050, and more completely test the internal hardware of the oscilloscope. They can be used to quickly determine if the oscilloscope is suitable for putting into service, such as when it is first received.

H If more extensive confirmation of performance is desired, do the Perform-

ance Tests, beginning on page 4--17, after doing the Functional and Self Tests

mentioned above.

Advantages: These procedures add direct checking of the warranted specifications that are marked with the n symbol. These procedures are fairly quick to execute but require specific test equipment. (See Table 4--1: Test equipment on page 4--18).

If you are not familiar with operating this oscilloscope, read the oscilloscope reference or user manuals or explore the online help.

TDS5000 Series Service Manual

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Performance Verification

Conventions

Throughout these procedures the following conventions apply:

H Each test procedure uses the following general format:

Title of Test

Equipment Required

Prerequisites

Procedure

H Each procedure consists of as many steps, substeps, and subparts as required

to do the test. Steps, substeps, and subparts are sequenced as follows:

1. First Step

a. First Substep

H First Subpart

H Second Subpart

b. Second Substep

2. Second Step

H In steps and substeps, the lead-in statement in italics instructs you what to

do, while the instructions that follow tell you how to do it, as in the example step below:

Initialize the oscilloscope: Push the front-panel DEFAULT SETUP button.

H Where instructed to use a control in the display or a front-panel button or

knob, the name of the control, button, or knob appears in boldface type. Where instructed to make or verify a setting, the value of the setting also appears in boldface type.

STOP.TheSTOP notation at the left is accompanied by information you must read to do the procedure properly.

H The term “toolbar” refers to a row of buttons at the top of the display. The

term “menu bar” refers to a row of menus at the top of the display. Y ou can switch between toolbar and menu bar operating modes by pushing the button near the top right corner of the display. See Figure 4--1.

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TDS5000 Series Service Manual

Performance Verification

Toolbar

Click here to change to

menu bar mode

Menu bar

Click here to change to

touchbar mode

Figure 4- 1: Toolbar and menu bar

H The procedures assume you have connected a mouse to the oscilloscope so

you can click on the screen controls. If you have not connected a mouse, you can use the optional touch screen to operate all the screen controls.

TDS5000 Series Service Manual

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Performance Verification

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TDS5000 Series Service Manual

Brief Procedures

Self Tests

The Self Tests use internal routines to confirm basic functionality and proper adjustment. No test equipment is required to do these test procedures.

The Functional Tests utilize the probe-compensation output at the front panel as a test-signal source for further verifying that the oscilloscope functions properly. A 10X probe, such as a P5050, is required to do these test procedures.

This procedure uses internal routines to verify that the oscilloscope functions and was adjusted properly. No test equipment or hookups are required.

Verify Internal Adjustment,

Self Compensation, and

Diagnostics

Equipment required

Prerequisites Power on the oscilloscope and allow a 20 minute warm-up before doing

1. Verify that internal diagnostics pass: Do the following substeps to verify

passing of internal diagnostics.

a. Display the System diagnostics menu:

H If the oscilloscope is in toolbar mode, click the MENU button to put

the oscilloscope into menu bar mode.

H Pull down the Utility menu and select Instrument Diagnostics. . . .

This displays the diagnostics control window.

b. Run the System Diagnostics:

H First disconnect all input signals from the instrument.

H Click the Run button in the diagnostics control window.

c. Wait: The internal diagnostics do an exhaustive verification of proper

oscilloscope function. This verification may take several minutes. When the verification is finished, the resulting status will appear in the diagnostics control window.

None

this procedure.

TDS5000 Series Service Manual

d. Verify that no failures are found and reported on-screen. All tests should

pass. If any failures occur, use the “DIAG:RESULTS:VERBOSE?” query for details on the errors.

4- 5

Brief Procedures

e. Run the signal-path compensation routine:

H Pull down the Utilities menu and select Instrument Calibra-

tion.... This displays the instrument calibration control window.

NOTE. Signal Path Compensation is not valid until the oscilloscope reaches a valid temperature. Calibration Status must be Pass.

H Click the Calibrate button to start the routine.

f. Wait: Signal-path compensation may take ten minutes to run.

g. Confirm signal-path compensation returns passed status: Verify that the

word Pass appears in the instrument calibration control window.

2. Return to regular service: Click the Close button to exit the instrument

calibration control window.

Functional Tests

The purpose of these procedures is to confirm that the oscilloscope functions properly. The only equipment required is a 10X probe, such as a P5050, and to check the file system, a 3.5 inch, 720 K or 1.44 Mbyte, formatted floppy disk.

STOP. These procedures verify functions; that is, they verify that the oscilloscope features operate. They do not verify that they operate within limits.

Therefore, when the instructions in the functional tests that follow call for you to verify that a signal appears on-screen “that is about five divisions in amplitude” or “has a period of about six horizontal divisions,” etc., do NOT interpret the quantities given as limits. Operation within limits is checked in Performance Tests, which begin on page 4--17.

STOP. DO NOT make changes to the front-panel settings that are not called out in the procedures. Each verification procedure will require you to set the oscilloscope to certain default settings before verifying functions. If you make changes to these settings, other than those called out in the procedure, you may obtain invalid results. In this case, just redo the procedure from step 1.

4- 6

When you are instructed to press a front-panel or screen button, the button may already be selected (its label will be highlighted). If this is the case, it is not necessary to press the button.

TDS5000 Series Service Manual

Brief Procedures

Verify All Input Channels

Equipment required

Prerequisites None

One 10X oscilloscope probe, such as Tektronix P5050

1. Initialize the oscilloscope: Push the front-panel DEFAULT S ETUP button.

2. Hook up the signal source: Connect the probe to the probe compensation

connector and the channel input that you want to test (beginning with CH 1) as shown in Figure 4--2.

TDS5000 oscilloscope

Probe from PROBE COMPENSATION output to CH 1 input

Figure 4- 2: Universal test hookup f or functional tests - CH 1 shown

3. Turn off all channels:If any of the front-panel channel buttons are lighted,

push those buttons to turn off the displayed channels. See Figure 4--3.

Channel buttons

Figure 4- 3: Channel button location

4. Select the channel to test: Push the channel button for the channel you are

currently testing. The button lights and the channel display comes on.

TDS5000 Series Service Manual

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Brief Procedures

5. Set up the oscilloscope: Push the front panel AUTOSET button. This sets

the horizontal and vertical scale for a usable display and sets the trigger source to the channel you are testing.

6. Verify that the channel is operational: Confirm that the following statements

are true.

H The vertical scale readout for the channel under test shows a setting of

500 mV, and a square-wave probe-compensation signal about 2 divisions in amplitude is on-screen.

H The front-panel vertical POSITION knob (for the channel you are

testing) moves the signal up and down the screen when rotated.

H Turning the vertical SCALE knob counterclockwise (for the channel you

are testing) decreases the amplitude of the waveform on-screen, turning the knob clockwise increases the amplitude, and returning the knob to 500 mV returns the amplitude to about 2 divisions.

7. Verify that the channel acquires in all acquisition modes: Pull down the

Horiz/Acq menu to select Horizontal/Acquisition Setup. . . . Click the

Acquisition tab in the control window that displays. Click each of the five

acquisition modes and confirm that the following statements are true.

H Sample mode displays an actively acquiring waveform on-screen. (Note

that there is a small amount of noise present on the square wave).

H Peak Detect mode displays an actively acquiring waveform on-screen

with the noise present in Sample mode “peak detected.”

H Hi Res mode displays an actively acquiring waveform on-screen with the

noise that was present in Sample mode reduced.

H Average mode displays an actively acquiring waveform on-screen with

the noise reduced.

H Envelope mode displays an actively acquiring waveform on-screen with

the noise displayed.

8. Test all channels: Repeat steps 2 through 7 until all input channels are verified.

9. Remove the test hookup: Disconnect the probe from the channel input and the probe compensation output.

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TDS5000 Series Service Manual

Brief Procedures

Verify the Time Base

Equipment required

Prerequisites None

One 10X oscilloscope probe, such as Tektronix P5050

1. Initialize the oscilloscope:Push the front-panel DEFAULT SETUP button.

2. Hook up the signal source: Connect the probe to the probe compensation

output and to the CH 1 input as shown in Figure 4--4.

TDS5000 oscilloscope

Probe from PROBE COMPENSATION output to CH 1 input

Figure 4- 4: Setup for time base test

3. Set up the oscilloscope: Push the front panel AUTOSET button.

4. Set the time base: Set the horizontal SCALE to 200 s/div. The time-base

readout is displayed at the bottom of the graticule.

5. Verify that the time base operates: Confirm the following statements.

H One period of the square-wave probe-compensation signal is about five

horizontal divisions on-screen for the 200 s/div horizontal scale setting.

H Rotating the horizontal SCALE knob clockwise expands the waveform

on-screen (more horizontal divisions per waveform period), counterclockwise rotation contracts it, and returning the horizontal scale to 200 s/div returns the period to about five divisions.

H The horizontal POSITION knob positions the signal left and right

on-screen when rotated.

6. Verify horizontal delay:

a. Center a rising edge on screen:

H Set the horizontal POSITION knob so that the rising edge where the

waveform is triggered is lined up with the center horizontal graticule.

TDS5000 Series Service Manual

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Brief Procedures

H Change the horizontal SCALE to 20 s/div. The rising edge of the

waveform should remain near the center graticule and the falling edge should be off screen.

b. Turn on and set horizontal delay:

H Pull down the Horiz/Acq menu to select Horizontal/Acquisition

Setup. . . .

H Click the Horizontal tab in the control window that displays.

H Click the Delay Mode button to turn delay on.

H Double click the Horiz Delay control in the control window to

display the pop-up keypad. Click the keypad buttons to set the horizontal delay to 500 s andthenclicktheENTER key.

c. Verify the waveform: Verify that a falling edge of the waveform is within

a few divisions of center screen.

d. Adjust the horizontal delay: Rotate the upper multipurpose knob to

change the horizontal delay setting. Verify that the falling edge shifts horizontally. Rotate the front-panel horizontal POSITION knob. Verify that this knob has the same effect (it also adjusts delay, but only when delay mode is on).

e. Verify the delay toggle function:

H Rotate the front-panel horizontal POSITION knob to center the

falling edge horizontally on the screen.

H Change the horizontal SCALE to 40 ns/div. The falling edge of the

waveform should remain near the center graticule. If not, readjust the delay setting to center the falling edge.

H Push the front-panel DELAY button several times to toggle delay off

and on and back off again. Verify that the display switches quickly between two different points in time (the rising and falling edges of this signal).

7. Remove the test hookup: Disconnect the probe from the channel input and the probe compensation output.

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TDS5000 Series Service Manual

Brief Procedures

Verify the A (Main) and B

(Delayed) Trigger Systems

Equipment required

Prerequisites None

One 10X oscilloscope probe, such as Tektronix P5050

1. Initialize the oscilloscope: Push the front-panel DEFAULT S ETUP button.

2. Hook up the signal source: Connect the probe to the probe compensation

output and to the CH 1 input as shown in Figure 4--5.

TDS5000 oscilloscope

Probe from PROBE COMPENSATION output to CH 1 input

Figure 4- 5: Setup for trigger test

3. Set up the oscilloscope: Push the front-panel AUTOSET button.

4. Verify that the main trigger system operates: Confirm that the following

statements are true.

H The trigger level readout for the A (main) trigger system changes with

the trigger-LEVEL knob.

H The trigger-LEVEL knob can trigger and untrigger the square-wave

signal as you rotate it. (Leave the signal untriggered).

H Pushing the front-panel trigger LEVEL knob sets the trigger level to the

50% amplitude point of the signal and triggers the signal that you just left untriggered. (Leave the signal triggered.)

TDS5000 Series Service Manual

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Brief Procedures

5. Verify that the delayed trigger system operates:

a. Set up the delayed trigger:

H Pull down the Trig menu and select A — B Trigger Sequence. . . .

This displays the A→B Sequence tab of the trigger setup control window.

H Click the Trig After Time button under A Then B.

H Click the B Trig Level control in the control window.

H Set the Trigger MODE to NORM.

b. Confirm that the following statements are true:

H The trigger-level readout for the B trigger system changes as you

turn the lower multipurpose knob.

H As you rotate the lower multipurpose knob, the square-wave

probe-compensation signal can become triggered and untriggered. (Leave the signal triggered.)

Verify the File System

c. Verify the delayed trigger counter:

H Double click the Trig Delay control to pop up a numeric keypad for

that control.

H Click on the keypad to enter a trigger delay time of 1 second and

then click Enter.

H Verify that the trigger TRIG’D indicator on the front panel flashes

about once every second as the waveform is updated on-screen.

6. Remove the test hookup: Disconnect the probe from the channel input and the probe compensation output.

Equipment required

Prerequisites None

One 10X oscilloscope probe, such as Tektronix P5050

One 720 K or 1.44 Mbyte, 3.5 inch DOS-compatible formatted disk.

1. Initialize the oscilloscope:Push the front-panel DEFAULT SETUP button.

2. Hook up the signal source: Connect the probe to the probe compensation

output and the CH 1 input as shown in Figure 4--6.

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TDS5000 Series Service Manual

Brief Procedures

TDS5000 oscilloscope

Probe from PROBE COMPENSATION output to CH 1 input

Figure 4- 6: Setup for the file syst em test

3. Insert the test disk: Insert the floppy disk in the floppy disk drive at the top

of the front panel.

4. Set up the oscilloscope: Push the front panel AUTOSET button.

5. Set the time base: Set the horizontal SCALE to 1ms/div. The time-base

readout is displayed at the bottom of the graticule.

6. Save the settings:

a. Pull down the File menu to select Instrument Setup. . . . This displays

the instrument setups control window.

b. Click the Save button under Save settings to file in the control window.

This displays a familiar Windows dialog box for choosing a destination directory naming the file.

c. In the Save Instrument Setups As dialog box, select the 3

/2Floppy (A:)

icon in the Save in: drop-down list to set the save destination to the floppy disk.

d. Note the default file name and then click the Save buttontosavethe

setup to the default file name.

7. Change the settings again: Set the horizontal SCALE to 200 s/div.

8. Verify the file system works:

a. Click the Recall Setups tab in the control window.

b. Click the Recall button under Recall settings from file in the control

window. This displays a familiar Windows dialog box for locating the settings file that you want to recall.

TDS5000 Series Service Manual

c. In the Recall Save Instrument Setups From dialog box, select the 3

Floppy (A:) icon in the Look in: drop-down list.

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Brief Procedures

d. Locate and then double click in the dialog box on the setup file that you

previously stored.

e. Verify that the oscilloscope retrieved the saved setup from the disk. Do

this by noticing the horizontal S CALE is again 1 ms and the waveform shows ten cycles just as it did when you saved the setup.

9. Remove the test hookup:

a. Disconnect the probe from the channel input and the probe compensation

output.

b. Remove the floppy disk from the floppy disk drive.

Verify the Internal Printer

(Optional)

Equipment required

Prerequisites None

Integrated Thermal Printer (Option 1P)

1. From the Windows desktop, open the Control Panel.

2. Open the Printers file.

3. Right-click on the Integrated Thermal Printer icon and select Properties.

4. Click on the General tab.

5. Click Print Test Page.

6. Verify that the test page advances through the printer and prints clearly.

Refer to Figure 4--7 on page 4--15 for a sample of the test page.

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TDS5000 Series Service Manual

Brief Procedures

Figure 4- 7: Test page from the internal printer

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Brief Procedures

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TDS5000 Series Service Manual

Performance Tests

This section contains a collection of manual procedures for checking that the TDS5000 Series Oscilloscopes perform as warranted. The preceding procedures are faster to complete, and should be done first if you intend to perform the performance tests.

The procedures are arranged in four logical groupings: Signal Acquisition System

Checks, Time Base System Checks, Triggering System Checks,andOutput Ports Checks. They check all the characteristics that are designated as checked in Specifications. (The characteristics that are checked appear with a n in Specifications).

STOP. These procedures extend the confidence level provided by the basic procedures described on page 4--5. The basic procedures should be done first, then these procedures performed if desired.

Prerequisites

The tests in this section comprise an extensive, valid confirmation of performance and functionality when the following requirements are met:

H The cabinet must be installed on the oscilloscope.

H You must have performed and passed the procedures under Self Tests, found

on page 4--5, and those under Functional Tests, found on page 4--6.

H A signal-path compensation must have been done within the recommended

calibration interval and at a temperature within ±5 _C of the present operating temperature. (If at the time you did the prerequisite Self Tests, the temperature was within the limits just stated, consider this prerequisite met).

H The oscilloscope must have been last adjusted at an ambient temperature

between +20 _C and +30 _C, must have been operating for a warm-up period of at least 20 minutes, and must be operating at an ambient temperature as listed in Table 1--10. (The warm-up requirement is usually met in the course of meeting the Self Tests and Functional Tests prerequisites listed above).

TDS5000 Series Service Manual

4- 17

Performance Tests

Equipment Required

Table 4- 1: Test equipment

Item number and description

The procedures starting on page 4--23 use external, traceable signal sources to directly check warranted characteristics. Table 4--1 lists the required equipment.

Minimum requirements Example Purpose

1. Attenuator,10X (two required)

Ratio: 10X; impedance 50 Ω; connectors: female BNC input, male BNC

Tektronix part number 011-0059-02

output

2. Attenuator, 5X Ratio: 5X; impedance 50 Ω; connec-

tors: female BNC input, male BNC

Tektronix part number 011-0060-02

output

3. Adapter, BNC female-toClip Leads

4. Terminator, 50 Ω Impedance 50 Ω; connectors: female

5. Cable, Precision 50 Ω Coaxial (three required)

6. Connector, Dual-Banana (two required)

BNC female-to-Clip Leads Tektronix part number

013-0076-00

Tektronix part number

BNC input, male BNC output

50 Ω, 36 in, male-to-male BNC connectors

011-0049-01

Tektronix part number 012-0482-00

Female BNC-to-dual banana Tektronix part number

103-0090-00

7. Connector, BNC “T” Male BNC-to-dual femal e BNC Tektronix part number

103-0030-00

8. Coupler, Dual-Input Female BNC-to-dual male BNC Tektronix part number

067-0525-02

9. Probe, 10X A P5050, P6243, or P6245 probe

Tektronix part number P5050 or P6245

10. Floppy disk 3.5 inch, 720 K or 1.44 Mbyte,

DOS-compatible floppy disk

11. Generator, DC Calibration

Variable amplitude to ±104 V; accuracy to 0.1%

12. Generator, Calibration 500 mV square wave calibrator

Standard IBM PC-compatible disk

Wavetek 9500

amplitude; accuracy to 0.25%

13. Generator, Time Mark (optional)

Variable marker frequency from 10 ms to 10 ns; accuracy within 2 ppm

14. Generator, Sine Wave 250 kHz to at least 500 MHz (higher

Wavetek 9500

for higher-bandwidth oscilloscopes). Variable amplitude from 60 mV to 2V

into 50 Ω. Frequency error

p-p

>2.0%

15. Meter, Level and Power Sensor

Frequency range: 10 MHz to the oscilloscope bandwidth. Amplitude range: 6 mV

p-p

to2V

p-p

Wavetek 9500

Signal Attenuation

Signal Coupling for Probe Compensator Output Check

Signal Termination for Channel Delay Test

Signal Interconnection

Various Accuracy Tests

Checking Trigger Sensitivity

Checking Delay Between Channels

Signal Interconnection

Checking File System Basic Functionality

Checking DC Offset, Gain, and Measurement Accuracy

To check accuracy of Signal Out

Checking Sample-Rate and Delay-time Accuracy

Checking Analog Bandwidth, Trigger Sensitivity, Samplerate, External Clock, and Delay-Time Accuracy

Checking Analog Bandwidth and Trigger Sensitivity

4- 18

TDS5000 Series Service Manual

Performance Tests

Table 4- 1: Test equipment (Cont.)

Item number and description

16. Splitter, Power Frequency range: DC to 4 GHz.

Wavetek 9500

Tracking: >2.0%

17. Adapter (three required) SMA female-to-female Tektronix part number 015-1012-00

18. Adapter (three required) SMA male-to-female BNC Tektronix part number 015-1018-00

19. Pulse Generator 250 MHz, ≤1 ns rise time, 5 V out Wavetek 9500

20. Cable, Coaxial

(two required)

50 Ω, 20 in, male-to-male SMA connectors

Tektronix part number 174-1427-00

1,2

21. Adapter (four required) Male N-to-female BNC Tektronix part number 103-0045-00

22. Adapter Female N-to-male BNC Tektronix part number 103-0058-00

23. Adapter SMA “T”, male to 2 SMA female Tektronix part number 015-1016-00

24. Adapter SMA female to BNC male Tektronix part number 015-0572-00

25. Adapter BNC male to female elbow Tektronix part number 103-0031-00

26. Adapter BNC female to clip lead Tektronix part number 013--0076--00

27. Terminator Short circuit, SMA connector Tektronix part number 015-1021-00

28. Attenuator, 2X Ratio: 2X; impedance 50 Ω; connec-

tors: female BNC input, male BNC

Tektronix part number 011-0069-02

output

29. Mouse or keyboard Tektronix part numbers: 119-6298-xx (mouse) 119-6297-xx (keyboard)

Wavetek 9500 with option 100 and an output head (9520, 9530, or 9550) appropriate for the bandwidth of the oscilloscope being tested.

For Delta Time Measurement Accuracy, use a Wavetek 9500 or a pulse generator with a rise time as shown in Table 4- 4 on page 4- 43.

Warning: The P6243 and P6245 probes that may be used with this oscilloscope provide an extremely low loading capacitance (<1 pF) to ensure the best possible signal reproduction. These probes should not be used to measure signals exceeding ±8 V, or errors in signal measurement will be observed. Above 40 V, damage to the probe may result. To make measurements beyond ±8 V, use either the P5050 probe (good to 500 V), or refer to the catalog for a recommended probe.

PurposeExampleMinimum requirements

Checking Analog Bandwidth

Checking the delay between channels

UsedtoTestDeltaTime Measurement Accuracy

Checking Analog Bandwidth

UsedtoTestDeltaTime Measurement Accuracy

Used to Test Probe Compensation Output

UsedtoTestDeltaTime Measurement Accuracy

Used to input test selections

TDS5000 Series Service Manual

4- 19

Performance Tests

TDS5000 Test Record

Photocopy this table and use it to record the performance test results for your TDS5000 Series Oscilloscope.

TDS 5000 Test Record

Instrument Serial Number: Certif icate Number: Temperature: RH %: Date of Calibration: Technician:

TDS5000 performance test Minimum Incoming Outgoing Maximum

DC voltage measurement accuracy (averaged)

CH1 5 mV Vert scale setting,

--5 Div position setting, +1 V offset

CH1 5 mV Vert scale setting,

+5 Div position setting, --1 V offset

CH1 200 mV Vert scale setting,

--5 Div position setting, +10 V offset

CH1 200 mV Vert scale setting,

+5 Div position setting, --10 V offset

CH1 1.01 V Vert scale setting,

--5 Div position setting, +10 V offset

CH1 1.01 V Vert scale setting,

+5 Div position setting, --10 V offset

CH2 5 mV Vert scale setting,

--5 Div position setting, +1 V offset

CH2 5 mV Vert scale setting,

+5 Div position setting, --1 V offset

CH2 200 mV Vert scale setting,

--5 Div position setting, +10 V offset

CH2 200 mV Vert scale setting,

+5 Div position setting, --10 V offset

CH2 1.01 V Vert scale setting,

--5 Div position setting, +10 V offset

CH2 1.01 V Vert scale setting,

+5 Div position setting, --10 V offset

CH3 5 mV Vert scale setting,

--5 Div position setting, +1 V offset

CH3 5 mV Vert scale setting,

+5 Div position setting, --1 V offset

CH3 200 mV Vert scale setting,

--5 Div position setting, +10 V offset

+ 1.0353 V __________ __________ + 1.0447 V

-- 1.0447 V __________ __________ -- 1.0353 V

+ 11.4989 V __________ __________ + 11.7011 V

-- 11.7011 V __________ __________ -- 11.4989 V

+ 17.602 V __________ __________ + 18.398 V

-- 18.398 V __________ __________ -- 17.602 V

+ 1.0353 V __________ __________ + 1.0447 V

-- 1.0447 V __________ __________ -- 1.0353 V

+ 11.4989 V __________ __________ + 11.7011 V

-- 11.7011 V __________ __________ -- 11.4989 V

+ 17.602 V __________ __________ + 18.398 V

-- 18.398 V __________ __________ -- 17.602 V

+ 1.0353 V __________ __________ + 1.0447 V

-- 1.0447 V __________ __________ -- 1.0353 V

+ 11.4989 V __________ __________ + 11.7011 V

4- 20

TDS5000 Series Service Manual

TDS 5000 Test Record (cont.)

Instrument Serial Number: Certif icate Number: Temperature: RH %: Date of Calibration: Technician:

TDS5000 performance test MaximumOutgoingIncomingMinimum

Performance Tests

CH3 200 mV Vert scale setting,

+5 Div position setting, --10 V offset

CH3 1.01 V Vert scale setting,

--5 Div position setting, +10 V offset

CH3 1.01 V Vert scale setting,

+5 Div position setting, --10 V offset

CH4 5 mV Vert scale setting,

--5 Div position setting, +1 V offset

CH4 5 mV Vert scale setting,

+5 Div position setting, --1 V offset

CH4 200 mV Vert scale setting,

--5 Div position setting, +10 V offset

CH4 200 mV Vert scale setting,

+5 Div position setting, --10 V offset

CH4 1.01 V Vert scale setting,

--5 Div position setting, +10 V offset

CH4 1.01 V Vert scale setting,

+5 Div position setting, --10 V offset

Analog bandwidth

CH1 100 mV 424 mV __________ __________ N/A

CH2 100 mV 424 mV __________ __________ N/A

CH3 100 mV 424 mV __________ __________ N/A

CH4 100 mV 424 mV __________ __________ N/A

Delay between channels N/A __________ __________ 100 ps

Channel isolation 100 MHz

CH 1 CH 2 CH 3 CH 4

full bandwidth

CH 1 CH 2 CH 3 CH 4

Time base system

Long term sample rate and delay time accuracy @ 100 ns/10.0 ms

-- 11.7011 V __________ __________ -- 11.4989 V

+ 17.602 V __________ __________ + 18.398 V

-- 18.398 V __________ __________ -- 17.602 V

+ 1.0353 V __________ __________ + 1.0447 V

-- 1.0447 V __________ __________ -- 1.0353 V

+ 11.4989 V __________ __________ + 11.7011 V

-- 11.7011 V __________ __________ -- 11.4989 V

+ 17.602 V __________ __________ + 18.398 V

-- 18.398 V __________ __________ -- 17.602 V

N/A N/A N/A N/A

--1.5 divisions __________ __________ +1.5 divisions

__________ __________ __________ __________

__________ __________ __________ __

0.08 divisions

0.16 divisions

TDS5000 Series Service Manual

4- 21

Performance Tests

TDS 5000 Test Record (cont.)

Instrument Serial Number: Certif icate Number: Temperature: RH %: Date of Calibration: Technician:

TDS5000 performance test MaximumOutgoingIncomingMinimum

Delta time measurement N/A Pass/Fail

Trigger system accuracy

Time accuracy for pulse, glitch, timeout, and Width, Hor. scale ≤ 1 s

Lower Limit Upper Limit

Time accuracy for pulse, glitch, timeout, and width, Hor. scale > 1 s

Lower Limit Upper Limit

CH1 trigger sensitivity, 50 MHz Pass/Fail __________ __________ Pass/Fail

CH1 delayed trigger sensitivity, 50 MHz Pass/Fail __________ __________ Pass/Fail

CH1 AUX trigger input, 50 MHz Pass/Fail __________ __________ Pass/Fail

CH1 trigger sensitivity, full bandwidth Pass/Fail __________ __________ Pass/Fail

CH1 delayed trigger sensitivity, full bandwidth Pass/Fail __________ __________ Pass/Fail

CH1 AUX trigger input, 100 MHz Pass/Fail __________ __________ Pass/Fail

Output signal checks

Auxiliary trigger output, open circuit

High Low

Auxiliary trigger output, 50 Ω

High Low

Analog signal output, 1 MΩ p-p ≥ 80 mV __________ __________ p-p ≤ 120 mV

Analog signal output, 50 Ω p-p ≥ 44 mV __________ __________ p-p ≤ 66 mV

Probe compensation output signal

Frequency 950 Hz __________ __________ 1.050 kHz

Voltage (difference) 990 mV __________ __________ 1010 mV

3.5 ns

1.9 s

High ≥ 2.5 V __________

High ≥ 1.0 V __________

__________ __________

__________

__________ __________

6.5 ns

2.1 s

Low ≤ 0.7 V

Low ≤ 0.25 V

4- 22

TDS5000 Series Service Manual

Signal Acquisition System Checks

These procedures check those characteristics that relate to the signal-acquisition system and are listed as checked under Warranted Characteristics in Specifica- tions. Refer to Table 4--1 on page 4--18 for test equipment specifications.

NOTE. References to Ch 3 and Ch 4 apply to the TDS5054 and TDS5104 models only.

Check DC Voltage

Measurement Accuracy

WARNING. The generator is capable of outputting dangerous voltages. Be sure to set the DC calibration generator to off or 0 volts before connecting, disconnecting, and/or moving the test hookup during the performance of this procedure. Also, check that the calibrator does not have shorting straps installed between the DC and sense outputs or grounds.

Performance Tests

Equipment required

Prerequisites The oscilloscope must meet the prerequisites listed on page 4--17

1. Install the test hookup and preset the instrument controls:

a. Hook up the test-signal source:

H Set the output of a DC calibration generator to off or 0 volts.

H Connect the output of a DC calibration generator through a

dual-banana connector followed by a 50 Ω precision coaxial cable to one side of a BNC T connector. See Figure 4--8.

H Connect the Sense output of the generator through a second

dual-banana connector followed by a 50 Ω precision coaxial cable to the other side of the BNC T connector. Now connect the BNC T connector to CH 1. See Figure 4--8.

Two dual-banana connectors (Item 6)

One BNC T connector (Item 7)

One DC calibration generator (Item 11)

Two precision 50 Ω coaxial cables (Item 5)

TDS5000 Series Service Manual

4- 23

Performance Tests

Output Sense

DC Calibrator

Dual banana to

BNC adapters

50 Ω coaxial cables

Figure 4- 8: Initial t est hookup

b. Initialize the oscilloscope: Press DEFAULT SETUP.

c. Modify the default settings:

TDS5000 oscilloscope

BNC T

connector

H From the tool bar, click Horiz and select the Acquisition tab.

H Click Average and set the number of averages to 16.

2. Confirm input channels are within limits for DC accuracy at maximum offset

and position: Do the following substeps — test CH 1 first, skipping substep 2a since CH 1 is already selected from step 1.

a. Select an unchecked channel:

H From the tool bar, click MEAS and then Clear to remove the

previous measurement.

H Press the Vertical button of the channel just confirmed to remove the

channel from the display.

H Press the front-panel Vertical button that corresponds to the channel

you are to confirm.

H Set the generator output to 0 V.

H Move the test hookup to the channel you selected.

b. Turn on the measurement Mean for the channel:

H From the tool bar, click MEAS and select the Ampl tab, and then

click Mean to measure the mean of the current channel.

4- 24

H Press Close.

TDS5000 Series Service Manual

Performance Tests

c. Set the vertical scale: Set the vertical SCALE to one of the settings

listed in Table 4--2 that is not yet checked. (Start with the first setting listed).

Table 4- 2: DC Voltage measurement accuracy

Scale setting

5mV -- 5 +1 V +1.040 V +1.0353 V to +1.0447 V

200 mV -- 5 +10 V +11.6 V +11.4989 V to +11.7011 V

1.01 V -- 5 +10 V +18 V +17.602 V to +18.398 V

Position setting (Divs)

+5 -- 1 V --1.040 V --1.0447 V to --1.0353 V

+5 -- 1 0 V -- 11 . 6 V --11.7011 V to --11.4989 V

+5 -- 1 0 V -- 1 8 V --18.398 V to --17.602 V

Offset setting

Generator setting

Accuracy limits

d. Display the test signal:

H From the tool bar click VERT, and then click Position.

H Use the keypad to set vertical position to --5 divisions (press CLR,

5, -- ,andthenENTER, on the keypad). The baseline level will move off screen.

H Click Offset.

H Use the keypad to set vertical offset to the positive-polarity setting

listed in the table for the current vertical scale setting. The baseline level will remain off screen.

TDS5000 Series Service Manual

H Set the generator to the level and polarity indicated in the table for

the vertical scale, position, and offset settings you have made. The DC test level should appear on the screen. (If it doesn’t return, the DC accuracy check has failed for the current vertical scale setting of the current channel).

e. Measure the test signal: Press Close. Read the measurement results at

the Mean measurement readout. See Figure 4--9.

4- 25

Performance Tests

measurement called

mean and read the

Turn on the

results here.

Figure 4- 9: Measurement of DC accuracy at m aximum offset and position

f. Check against limits:

H CHECK that the Mean readout on the screen is within the limits

listed for the current vertical scale and position/offset/generator settings. Enter value on test record.

H Repeat substep d, reversing the polarity of the position, offset, and

generator settings as is listed in the Table 4--2 on page 4--25.

H CHECK that the Mean measurement readout on the screen is within

the limits listed for the current vertical scale setting and position/offset/generator settings. Enter value on test record.

H Repeat substeps c through f until all vertical scale settings, listed in

Table 4--2, are checked for the channel under test.

g. Test all channels: Repeat substeps a through f for all channels.

3. Disconnect the hookup:

a. Set the generator output to 0 V.

b. Disconnect the cable from the generator output at the input connector of

the channel last tested.

4- 26

TDS5000 Series Service Manual

Performance Tests

Check Analog Bandwidth

Equipment required

Prerequisites See page 4--17

One sine wave generator (Item 14)

One level meter and power sensor (Item 15)

One power divider (Item 16)

One female N to male BNC adapter (Item 22)

Four male N to female BNC adapters (Item 21)

Two 50 Ω precision cables (Item 5)

Attenuators (Items 1 and 2)

Optional: One high-frequency leveled sine wave generator and its leveling head - replaces items 14, 15, 16, 21, and 22

1. Install the test hookup and preset the instrument controls:

a. Initialize the oscilloscope:

H Press DEFAULT SETUP.

b. Modify the default settings:

H Turn the horizontal SCALE knob to 40 ns.

H From the tool bar, click Horiz and select the Acquisition tab.

H Click Average and set the number of averages to 16.

H Click Equivalent Time Auto.

H From the tool bar, click MEAS. Click Setup Ref Levs; then click

the Determine Base, Top From Min-Max button.

NOTE. The sine wave generator output amplitude must be leveled to within

0.35 db of the reference frequency (10 MHz) through the bandwidth frequency listed in Table 4--3 on page 4--29. The 0.35 db requirement is necessary to ensure a bandwidth that meets Tektronix specifications.

You can perform bandwidth Performance Verification using an unleveled sine wave generator (with amplitude error < 0.35 db). Under these conditions, the bandwidth PV is subject to the flatness errors associated with the generator used.

Refer to the Sine Wave Generator Leveling Procedure on page 4--60 if your sine wave generator does not have automatic output amplitude leveling.

TDS5000 Series Service Manual

4- 27

Performance Tests

c. Hook up the test-signal source: Connect the sine wave output of a

leveled sine wave generator to CH 1. Set the output of the generator to a reference frequency of 10 MHz or less. See Figure 4--10. For the optional setup using a leveled sine wave generator with a leveling head, see Figure 4--11 and, if using this optional setup with the example Tektronix SG504, set the generator output to 6 MHz.

Sine Wave

Generator

Output

50 Ω coaxial cable

Figure 4- 10: Initial t est hookup

High Frequency Sine

Wave Generator

Output

TDS5000 oscilloscope

Leveling head

4- 28

50 Ω coaxial cables

Figure 4- 11: Optional initial test hookup

2. Confirm the input channels are within limits for analog bandwidth: Do the following substeps — test CH 1 first, skipping substeps a and b since CH 1

is already set up for testing from step 1.

a. Select an unchecked channel:

H From the tool bar, click MEAS and then Clear to remove the

previous measurement.

H Press the Vertical button of the channel just confirmed to remove

the channel from the display.

TDS5000 Series Service Manual

Performance Tests

(

)

H Press the front-panel Vertical button that corresponds to the channel

you are to confirm.

H Move the leveling output of the sine wave generator to the channel

you selected.

b. Match the trigger source to the channel selected:

H Press the Trigger SOURCE button until the source that corresponds

to the channel you are to confirm is on.

c. Set its input impedance:

H From the button bar, click the VERT button and select the tab for

the channel you are to confirm. Click the Termination 50 Ω button.

d. Set the vertical scale: Set the vertical SCALE that corresponds to the

channel you are to confirm to one of the settings listed in Table 4--3 not yet checked. (Start with the 100 mV setting).

e. Set the triggering coupling:

H Click the Coupling DC button.

Table 4- 3: Analog bandwidth

Reference Vertical scale

1mV 6mV 1ns 175 MHz 175 MHz ≥4.24 mV

2mV 12 mV 1ns 300 MHz 1GHz ≥8.48 mV

5mV 30 mV 1ns 500 MHz 1GHz ≥21.2 mV

10 mV 60 mV 1ns 500 MHz 1GHz ≥42.4 mV

20 mV 120 mV 1ns 500 MHz 1GHz ≥84.8 mV

50 mV 300 mV 1ns 500 MHz 1GHz ≥212 mV

100 mV 600 mV 1ns 500 MHz 1GHz ≥424 mV

200 mV 1.2 V 1ns 500 MHz 1GHz ≥848 mV

500 mV 3V

1V 6V

If your generator cannot output 6 divisions of amplitude, determine its maximum output at the Test frequency, and use this for the reference amplitude. The - 3 db limit can be calculated as: 0.707 × reference amplitude.

amplitude

6divisions

Horizontal scale

1ns 500 MHz 1GHz ≥2.12 V

1ns 500 MHz 1GHz ≥4.24 V

Test frequency

TDS5052 TDS5054

TDS5104

- 3 db Limits

f. Display the test signal: Do the following subparts to first display the

reference signal and then the test signal.

TDS5000 Series Service Manual

4- 29

Performance Tests

H From the button bar click MEAS; then select the Time tab.

H Click the Freq button to measure the frequency of the current

channel.

H Select the Ampl tab. Click the Pk-Pk button.

H Click Close button.

H Set the generator output so the CHx Pk-Pk readout equals the

reference amplitude in Table 4--3 that corresponds to the vertical scale set in substep d.

H Press the front-panel PUSH TO SET 50% as necessary to trigger a

stable display. At full bandwidth, you may also want to make small, manual adjustments to the trigger level. You can use the Trigger LEVEL knob to do this. (Full bandwidth varies with TDS model as isshowninTable4--3).

g. Measure the test signal:

H Set the frequency of the generator, as shown on the screen, to the test

frequency in Table 4--3 that corresponds to the vertical scale set in substep d. See Figure 4--12.

H Set the horizontal SCALE to the horizontal scale setting in

Table 4--3 that corresponds to the vertical scale set in substep d. Press PUSH TO SET 50% as necessary to trigger the signal.

H Read the results at the CHx Pk-Pk readout, which will automatically

measure the amplitude of the test signal. See Figure 4--12.

Set the generator

(reference) frequency

to the test frequency

from Table 4--3.

Read results.

Set the horizontal scale

from Table 4--3.

4- 30

Figure 4- 12: Measurement of analog bandwidth

TDS5000 Series Service Manual

Performance Tests

h. Check against limits:

H CHECK that the Pk-Pk readout on the screen is within the limits

listed in Table 4--3 for the current vertical scale setting.

H Enter voltage on the test record.

H When finished checking, set the horizontal SCALE back to the

50 ns setting.

STOP. Checking the bandwidth of each channel at all vertical scale settings is time consuming and unnecessary. You can skip checking the remaining vertical scale settings in Table 4--3 (that is, skip the following substep, i) if this oscilloscope has performed as follows:

H Passed the 100 mV vertical scale setting just checked in this

procedure.

H Passed the Verify Internal Adjustment, Self Compensation, and

Diagnostics procedure found under Self Tests on page 4--5.

NOTE. Passing the signal path compensation confirms the signal path for all vertical scale settings for all channels. Passing the internal diagnostics ensures that the factory-set adjustment constants that control the bandwidth for each vertical scale setting have not changed.

i. Check remaining vertical scale settings against limits (optional):

H If desired, finish checking the remaining vertical scale settings for

the channel under test by repeating substeps d through h for each of the remaining scale settings listed in Table 4--3 for the channel under test.

H Before doing substep f, click the Clear button to remove the

previous channel measurements.

H When doing substep f, skip the subparts that turn on the CHx Pk-Pk

measurement until you check a new channel.

H Install/remove attenuators between the generator leveling head and

the channel input as needed to obtain the six division reference signals listed in the table.

j. Test all channels: Repeat substeps a through h for all channels.

TDS5000 Series Service Manual

3. Disconnect the hookup: Disconnect the test hook up from the input

connector of the channel last tested.

4- 31

Performance Tests

Check Delay Between

Channels

Equipment required

Prerequisites See page 4--17

One sine wave generator (Item 14)

Three precision 50 Ω coaxial cables (Item 5)

One power divider (Item 16) or dual input coupler (item 8)

3 SMA female to female adapter connector (Item 17)

3 SMA male-to-female BNC adapter connector (Item 18)

STOP. DO NOT use the vertical position knob to reposition any channel while doing this check. T o do so invalidates the test.

1. Install the test hookup and preset the instrument controls:

a. Initialize the front panel: Press the DEFAULT SETUP button.

b. Modify the initialized front-panel control settings:

H Do not adjust the vertical position of any channel during this

procedure.

H From the toolbar, click the V ert button.

H Set the termination of each channel to 50 Ω by selecting each

channel tab and clicking the Termination 50 Ω button.

H Set the horizontal SCALE to 400 ps.

H From the tool bar, click Horiz and select the Acquisition tab.

H Click Average and set the number of averages to 16.

4- 32

TDS5000 Series Service Manual

Performance Tests

c. Hook up the test-signal source:

H Connect the sine wave output of a sine wave generator to a 50 Ω

precision coaxial cable.

H Connect the cable to either a coupler, or

a power divider and two 50 Ω precision coaxial cables, as shown in Figure 4--13. (See note below).

NOTE. To ensure that you do not introduce errors in the delay measurements, use cables that have a delay difference of less than 10 ps between each other.

You can check the variance in delay between cables by connecting the cables to CH 1 and CH 2. and, using the Vbarcursors, measure the delay. Reverse the cables and repeat the measurement. Divide the difference between the two delay measurements by 2. If the result is less than 10 ps, you can proceed with the test.

H Connect the coupler or cables to CH 1 and CH 2. See F igure 4--13.

TDS5000 oscilloscope

Sine Wave

Generator

Output

50 Ω precision coaxial cables

Power divider

Male SMA to Female BNC

SMA femaleto-female

3places

Figure 4- 13: Initial t est hookup

2. Confirm all four channels are within limits for channel delay:

TDS5000 Series Service Manual

a. Set up the generator: Set the generator frequency to 250 MHz and the

amplitude for six to eight divisions in CH 1.

Hint: As you are adjusting the generator amplitude, push PUSH TO SET 50% frequently to speed up the updating of the waveform amplitude on the screen.

4- 33

Performance Tests

b. Set the horizontal SCALE to 200 ps.

c. Save a CH 2 waveform: Press the CH 2 Vertical button. From the button

bar, click the Refs button and select the Ref 2 tab. Click the Save Wfm to Ref2 Save button.

d. Save CH 3 waveform:

H Move the coupler or cable from CH 2 to CH 3, so that CH 1 and

CH 3 are driven. Press the Vertical CH 2 buttontoturnoffCH 2,

and press the Vertical CH 3 buttontoturnonCH 3. Select the Ref 3 tab and click the Ch Channel 3 button. Click the Save Wfm to Ref3

Save button.

e. Display all test signals:

H Press the CH 3 Vertical button to remove CH 3 from the display.

H Display the live waveform. Move the coupler or cable from CH 3 to

CH 4, so that CH 1 and CH 4 are driven. Press the Vertical CH 4 button to display. See Figure 4--14 on page 4--35.

H Display the reference waveforms. To do this, click the Ref 3 Display

Off button to toggle it to On and display the reference. Select the Ref 2 tab and click the Display Off button to toggle it to On. You

may notice their overlapping waveform handle icons. See Figure 4--14 on page 4--35. Click on Close.

f. Measure the test signal:

H Locate the time reference points for these waveforms. Do this by

first identifying the point where the rising edge of the left-most waveform crosses the center horizontal graticule line. Next, note the corresponding time reference point for the right-most waveform. See Figure 4--14 on page 4--35.

H Press CURSORS and select the V Bars Cursors Type.

H Click the Close button.

H Align one V bar cursor to the time reference point of the left-most

waveform edge and the other cursor to the time reference point of the right-most waveform edge by rotating the multipurpose knobs (if necessary, press the FINE buttons). See Figure 4--14 on page 4--35.

H Read the measurement results at the ∆:

cursor readout on the screen.

4- 34

TDS5000 Series Service Manual

Performance Tests

Display the waveforms.

Locate the time reference

points for these waveforms.

Align each cursor to the time

reference points

Figure 4- 14: Measurement of channel delay

g. Check against limits: CHECK that the cursor readout on the screen is

≤100 ps.

h. Enter the time on the test record.

Read results.

TDS5000 Series Service Manual

3. Disconnect the hookup: Disconnect the coupler or cables from the input

connectors of the channels.

4- 35

Performance Tests

Check Channel Isolation

(Crosstalk)

Equipment required

Prerequisites See page 4--17

Leveled

Sine Wave

Generator

One leveled sine-wave generator (Item 14)

One 50 Ω, precision coaxial cable (Item 5)

TDS5000 oscilloscope

Output

50 Ω precision coaxial cable

Figure 4- 15: Initial t est hookup

1. Install the test hookup and preset the instrument controls:

a. Hook up the test-signal source: Connect, through a 50 Ω precision

coaxial cable, the output of the generator to CH 1 (see Figure 4--15).

b. Initialize the oscilloscope: Press the DEFAULT SETUP button.

c. Modify the initialized control settings:

H Turn on all vertical channels (press the Vertical button of any off

channels: CH 1, CH 2, and, if equipped, CH 3, and CH 4).

H From the button bar, click the Vert button. Set the termination of

each channel to 50 Ω by selecting each channel tab and clicking its Termination 50 Ω button.

H SettheVerticalSCALEofCH1,CH2,CH3,andCH4to100 mV.

H Set the Trigger SOURCE to CH 1.

H Set the Horizontal SCALE 20 ns.

H Click the Close button.

2. Check channel isolation against limits:

a. Display the test signal: Set the generator frequency to 100 MHz and

adjust the output level for an 8-division display.

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TDS5000 Series Service Manual

Performance Tests

b. Check — Amplitude of each trace other than CH 1 is 0.08 division or

less (discount trace width). Enter amplitude on the test record.

c. Move the signal to the CH 2 input connector, and change the Trigger

SOURCE to CH 2.

d. Check — Amplitude of each trace other than CH 2 is 0.08 division or

less (discount trace width). Enter amplitude on the test record.

e. Move the signal to the CH 3 input connector, and change the Trigger

SOURCE to CH 3. (TDS5054 or TDS5104) If you are checking a TDS5052, proceed to step i.

f. Check — Amplitude of each trace other than CH 3 is 0.08 division or

less (discount trace width). Enter amplitude on the test record.

g. Move the signal to the CH 4 input connector, and change the Trigger

SOURCE to CH 4. (TDS5054 or TDS5104)

h. Check — Amplitude of each trace other than CH 4 is 0.08 division or

less (discount trace width). Enter amplitude on the test record.

i. Move the signal to the CH 1 input connector, and change the Trigger

SOURCE to CH 1.

j. Set the generator output frequency to 500 MHz for the TDS5054 or

1 GHz for the TDS5104. Set the generator output level for an 8-division display.

k. Check — Amplitude of each trace other than CH 1 is 0.16 division or

less (discount trace width). Enter amplitude on the test record.

l. Move the signal to the CH 2 input connector, and change the Trigger

SOURCE to CH 2.

m. Check — Amplitude of each trace other than CH 2 is 0.16 division or

less (discount trace width). Enter amplitude on the test record.

n. Move the signal to the CH 3 input connector, and change the Trigger

SOURCE to CH 3. (TDS5054 or TDS5104)

o. Check — Amplitude of each trace other than CH 3 is 0.16 division or

less (discount trace width). Enter amplitude on the test record.

p. Move the signal to the CH 4 input connector, and change the Trigger

SOURCE to CH 4. (TDS5054 or TDS5104)

TDS5000 Series Service Manual

q. Check — Amplitude of each trace other than CH 4 is 0.16 division or

less (discount trace width). Enter amplitude on the test record.

3. Disconnect the hookup: Disconnect the cable from the generator output at

the input connector of the channel.

4- 37

Performance Tests

Time Base System Checks

These procedures check those characteristics that relate to the time base system and are listed as checked under Warranted Characteristics in Specifications.

Check Long-Term Sample

Rate and Delay Time

Accuracy

Equipment required

Prerequisites See page 4--17

Time Mark or

Sine Wave

Generator

One time-mark generator (Item 13), or Sine wave generator (Item 14)

One 50 Ω, precision coaxial cable (Item 5)

TDS5000 oscilloscope

Output

50 Ω coaxial cable

Figure 4- 16: Initial t est hookup

1. Install the test hookup and preset the instrument controls:

4- 38

a. Hook up the test-signal source: Connect, through a 50 Ω precision

coaxial cable, the output of the generator to CH 1 (see Figure 4--16).

H If using a time-mark generator, set the output for 10 ms markers.

H If using a sine wave generator, set the output for 1.2 V and 500 kHz.

b. Initialize the oscilloscope: Press the DEFAULT SETUP button.

c. Modify the initialized front-panel control settings:

H Set the V ertical SCALE to 200 mV (or 500 mV with the optional

Tektronix TG501A Time Mark Generator).

H Set the Horizontal SCALE to 200 ns.

H From the button bar, click the Vert button. Click the Termination

50 Ω button.

H Press PUSH TO SET 50%.

TDS5000 Series Service Manual

H Click the Close button.

H Use the Vertical POSITION knob to center the test signal on the

screen.

H Press the Trigger MODE button to toggle it to NORMAL.

2. Confirm the time base is within limits for accuracies:

a. Measure the test signal:

H If using a time-mark generator, align the trigger T to the center

vertical graticule line by adjusting the Horizontal POSITION.See Figure 4--17 on page 4--40.

H If using a sine wave generator, align the rising edge of the sine wave

on the center graticule crosshairs by adjusting the Horizontal POSITION.

H From the button bar, click the Horiz button and select the HOR-

IZONTAL tab.

Performance Tests

H Press the Horizontal DELAY Mode button to toggle it on. See

Figure 4--17 on page 4--40.

H Set the delay time to 10 ms. (Do this by clicking Horiz Delay and

on the keypad press 10, then m followed by ENTER).

b. Check long-term sample rate and delay time accuracies against limits:

H CHECK that the rising edge of the marker (or sine wave) crosses

the center horizontal graticule line at a point within ±1.5 divisions of the center graticule. See Figure 4--17 on page 4--40.

H Enter the number of divisions on the test record.

TDS5000 Series Service Manual

4- 39

Performance Tests

Align the trigger T

to the center

graticule line.

Check long-term

sample rates and

delay time accuracies

against limits.

Set horizontal mode.

Set horizontal scale

and delayed time.

Figure 4- 17: Measurement of accuracy - long -term and delay time

3. Disconnect the hookup: Disconnect the cable from the generator output at the input connector of CH 1.

4- 40

TDS5000 Series Service Manual

Performance Tests

Check Delta Time

Measurement Accuracy

Equipment required

One 50 Ω, precision coaxial cable (Item 5)

One Connector, BNC “T”, male BNC-to-dual female BNC (Item 7)

One Pulse Generator, Wavetek 9500 or equivalent (Item 19)

Two 50 Ω, coaxial cable, male-to-male SMA connectors (Item 20)

One SMA female to BNC male connector (Item 24)

One BNC elbow connector (Item 25)

One SMA “T”, male to two SMA female connectors (Item 23)

Two SMA terminator connectors, short circuit (Item 27)

One 2X attenuator, 50 Ω, female BNC-to- male BNC (Item 29)

Prerequisites See page 4--17

This procedure checks the “sample rate” portion of the Delta Time Measurement Accuracy as listed in Specifications. The previous procedure, Check Long-Term Sample Rate and Delay Time Accuracy, on page 4--38, verified the “PPM” portion of the delta time specification.

1. Install the test hookup and preset the instrument controls:

a. Initialize the oscilloscope: Press the DEFAULT SETUP button.

b. Hook up the pulse generator as shown in Figure 4--18.

TDS5000 oscilloscope

Pulse

Generator

Output

20I 50 Ω cable

BNC 90° female

to male adapter

BNC T

50 Ω cable

2X attenuator

connector

BNC to SMA

adapter

Figure 4- 18: Delta time accuracy test hookup

SMA T connector

20I 50 Ω cable

SMA male

to male

SMA male

to male

SMA short

TDS5000 Series Service Manual

4- 41

Performance Tests

H Set the pulse generator output for a positive-going pulse with a

280 ps -- 800 ps rise-time, as shown in Table 4--4 on page 4--43, and

for the fastest possible rep rate (at least 1 kHz).

H Set the pulse generator output for about 500 mV. (This amplitude

can be adjusted later to get a 5-division pulse on the screen.)

c. Modify the initialized front-panel control settings:

H From the button bar, click the Vert button. Set the termination of the

channel to 50 Ω by selecting the channel tab and clicking the Termination 50 Ω button

H Press AUTOSET. You may see both positive and negative pulses.

Adjust the Trigger LEVEL knob so the trigger level is about 50% of the rising edge of the positive pulse.

H From the button bar, click the Horiz button and select the Acquisi-

tion tab. Press the Equivalent Time Off (Real Time Only) button.

H Set the horizontal SCALE to 5 or 10 ns/division. The pulse width

should be about 6ns.

H Adjust pulse amplitude and oscilloscope vertical scale and position

as necessary to obtain about 5 divisions of the positive pulse.

d. Set up for statistics measurements:

H Re-adjust the Trigger LEVEL knob so the trigger level is about 50%

of the rising edge of the positive pulse.

H Press RUN/STOP button to freeze the display.

H Click MEAS and select the Time tab to bring up the Time Measure-

ments menu.

H Click the Positive Width button.

H Click Setup Statistics. Click the Measurement Statistics All button

andthenclickReset to reset the statistics.

H Click Weight n=. On the keypad press 1000, then ENTER. Click

Setup.

H Click Setup Ref Levs and set Mid Ref to 50%. Click Close.

H Press the RUN/STOP button to start the acquisitions.

H Wait about 30 seconds.

4- 42

H Press RUN/STOP

button to freeze the display.

H Record the all statistics values.

TDS5000 Series Service Manual

Tektronix TDS5052, TDS5054, TDS5104 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY

Table of Contents

List of Figures

List of Tables

General Safety Summary

Service Safety Summary

Preface

Manual Structure

Manual Conventions

Related Documentation

Contacting Tektronix

Specifications

Product and Feature Description

Specification Tables

Operating Information

Installation

Operating Information

Theory of Operation

Logic Conventions

Module Overviews

Performance Verification

Conventions

Brief Procedures

Self Tests

Functional Tests

Performance Tests

Prerequisites

Equipment Required

TDS5000 Test Record

Signal Acquisition System Checks

Time Base System Checks