Tektronix TBS1052B, TBS1052B EDU, TBS1072B, TBS1072B EDU, TBS1102B User Manual

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TBS1000B and TBS1000B-EDU Series Digital Storage Oscilloscopes

User Manual

*P077088602*

077-0886-02

TBS1000B and TBS1000B-EDU Series Digital Storage Oscilloscopes

User Manual

Revision A

www.tek.com

077-0886-02

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

OpenChoice™ is a registered trademark of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA

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

■

In North America, call 1-800-833-9200.

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Worldwide, visit www.tek.com to find contacts in your area.

Warranty

Tektronix warrants that the product will be free from defects in materials and workmanship for a period of five (5) years from the date of original purchase from an authorized Tektronix distributor. If the product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Batteries are excluded from this warranty. Parts, modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.

In order to obtain service under this warranty, Customer must notify Tektronix 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, shipping charges prepaid, and with a copy of customer proof of purchase. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated 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 incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO 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.

[W19 – 03AUG12]

Warranty

Tektronix warrants that the product will be free from defects in materials and workmanship for a period of one (1) year from the date of original purchase from an authorized Tektronix distributor. If the product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Batteries are excluded from this warranty. Parts, modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.

[W15 – 15AUG04]

Important safety information ............................................................................................................. vii

General safety summary ............................................................................................................... vii

Service safety summary .................................................................................................................. x

Terms in the manual ...................................................................................................................... xi

Terms on the product ..................................................................................................................... xi

Symbols on the product ................................................................................................................. xi

Compliance information ................................................................................................................... xiii

EMC compliance ......................................................................................................................... xiii

Safety compliance ....................................................................................................................... xiv

Environmental compliance ......................................................................................................... xvii

Getting started

General features .............................................................................................................................. 1

Installation ...................................................................................................................................... 2

Power cord ................................................................................................................................. 2

Power source ............................................................................................................................. 2

Security loop .............................................................................................................................. 3

Ventilation ................................................................................................................................. 3

Functional check ............................................................................................................................. 3

Probe safety .................................................................................................................................... 5

Manual probe compensation ........................................................................................................... 5

Probe attenuation setting ................................................................................................................ 6

Current probe scaling ...................................................................................................................... 7

Self calibration ................................................................................................................................ 7

Firmware updates through the internet ........................................................................................... 7

Check the version of your current firmware ............................................................................. 7

Check the version of the latest available firmware ................................................................... 8

If the latest available firmware is newer than that on your TBS1000B update your product

firmware ............................................................................................................................... 8

Operating basics

Display area .................................................................................................................................. 10

Message area ........................................................................................................................... 11

Using the menu system ................................................................................................................. 12

Vertical controls ........................................................................................................................... 12

Horizontal controls ....................................................................................................................... 13

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual i

Table of Contents

Trigger controls ............................................................................................................................ 14

Menu and control buttons ............................................................................................................. 15

Input connectors ........................................................................................................................... 16

Other front-panel items ................................................................................................................. 17

Understanding oscilloscope functions

Setting up the oscilloscope ........................................................................................................... 20

Using autoset ........................................................................................................................... 20

Using autorange ....................................................................................................................... 20

Saving a setup .......................................................................................................................... 20

Recalling a setup ..................................................................................................................... 20

Default setup ............................................................................................................................ 20

Triggering ..................................................................................................................................... 21

Source ...................................................................................................................................... 21

Types ....................................................................................................................................... 22

Modes ...................................................................................................................................... 22

Coupling .................................................................................................................................. 22

Position .................................................................................................................................... 22

Slope and level ........................................................................................................................ 22

Acquiring signals .......................................................................................................................... 23

Acquisition modes ................................................................................................................... 23

Time base ................................................................................................................................ 23

Scaling and positioning waveforms .............................................................................................. 24

Vertical scale and position ...................................................................................................... 24

Horizontal scale and position; pretrigger information ............................................................ 24

Taking measurements ................................................................................................................... 26

Graticule .................................................................................................................................. 26

Cursors ..................................................................................................................................... 26

Automatic ................................................................................................................................ 27

Application examples

Taking simple measurements ....................................................................................................... 30

Using autoset ........................................................................................................................... 30

Taking automatic measurements ............................................................................................. 31

Measuring two signals ............................................................................................................. 32

Using autorange to examine a series of test points ....................................................................... 33

Taking cursor measurements ........................................................................................................ 34

Measuring ring frequency and amplitude ................................................................................ 34

ii TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Measuring pulse width ............................................................................................................ 35

Measuring rise time ................................................................................................................. 36

Analyzing signal detail ................................................................................................................. 38

Looking at a noisy signal ......................................................................................................... 38

Separating the signal from noise ............................................................................................. 39

Capturing a Single-Shot signal ..................................................................................................... 39

Optimizing the acquisition ...................................................................................................... 40

Measuring propagation delay ....................................................................................................... 41

Triggering on a specific pulse width ............................................................................................ 42

Triggering on a video signal ......................................................................................................... 44

Triggering on video fields ....................................................................................................... 45

Triggering on video lines ........................................................................................................ 45

Using the zoom function to see waveform details .................................................................. 46

Analyzing a differential communication signal ............................................................................ 47

Viewing impedance changes in a network ................................................................................... 48

Data logging (non-EDU models only) .......................................................................................... 50

Limit testing (non-EDU models only) .......................................................................................... 51

Table of Contents

FFT

Setting up the Time-Domain waveform ....................................................................................... 53

Nyquist frequency ................................................................................................................... 54

Displaying the FFT spectrum ....................................................................................................... 55

Selecting an FFT window ............................................................................................................. 56

FFT aliasing ............................................................................................................................. 58

Eliminating aliases .................................................................................................................. 58

Magnifying and positioning an FFT spectrum ............................................................................. 59

Horizontal zoom and position ................................................................................................. 59

Vertical zoom and position ...................................................................................................... 59

Measuring an FFT spectrum using cursors ................................................................................... 59

USB flash drive and device ports

USB flash drive port ..................................................................................................................... 61

Flash drive initial read time ..................................................................................................... 62

Formatting a flash drive .......................................................................................................... 62

Flash drive capacities .............................................................................................................. 62

File management conventions ...................................................................................................... 63

Saving and recalling files with a USB flash drive ........................................................................ 64

Save image save setup and save waveform options ................................................................ 64

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual iii

Table of Contents

Recall setup and recall waveform options ............................................................................... 65

Using the save function of the Front-Panel save button ............................................................... 65

Saves all to files ....................................................................................................................... 65

Saves image to file .................................................................................................................. 67

USB device port ............................................................................................................................ 68

Installing the PC communications software on a PC ................................................................... 68

Connecting to a PC ....................................................................................................................... 69

Connecting to a GPIB system ....................................................................................................... 70

Command entry ............................................................................................................................ 71

Reference

Acquire ......................................................................................................................................... 73

Key points ................................................................................................................................ 73

Autorange ..................................................................................................................................... 76

Autoset .......................................................................................................................................... 78

Sine wave ................................................................................................................................ 79

Square wave or pulse ............................................................................................................... 79

Video signal ............................................................................................................................. 80

Enable (EDU models only) ..................................................................................................... 80

Counter ......................................................................................................................................... 81

Course (EDU models only) .......................................................................................................... 82

Create your course on a PC ..................................................................................................... 82

Load your course on your TBS1000B-EDU ........................................................................... 82

Run labs on your TBS1000B-EDU ......................................................................................... 83

Cursor ........................................................................................................................................... 84

Key points ................................................................................................................................ 85

Default setup ................................................................................................................................. 85

Display .......................................................................................................................................... 85

Key points ................................................................................................................................ 86

FFT ............................................................................................................................................... 87

Function ........................................................................................................................................ 88

Non-EDU models .................................................................................................................... 88

EDU models ............................................................................................................................ 89

Help .............................................................................................................................................. 89

Horizontal ..................................................................................................................................... 89

Knobs and buttons ................................................................................................................... 89

Key points ................................................................................................................................ 89

Math .............................................................................................................................................. 90

Key points ................................................................................................................................ 90

iv TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Measure ........................................................................................................................................ 91

Key points ................................................................................................................................ 91

Measurement gating ..................................................................................................................... 95

Menu off ....................................................................................................................................... 95

Print-Ready screenshots ............................................................................................................... 95

Reference menu ............................................................................................................................ 96

Save-Recall ................................................................................................................................... 96

Save all .................................................................................................................................... 97

Save image .............................................................................................................................. 97

Save setup ................................................................................................................................ 98

Save waveform ........................................................................................................................ 98

Recall setup ............................................................................................................................. 99

Recall waveform ...................................................................................................................... 99

Key points .............................................................................................................................. 100

Trend plot (non-EDU models only) ............................................................................................ 101

Trigger controls .......................................................................................................................... 102

Trigger types .......................................................................................................................... 102

Edge trigger ........................................................................................................................... 102

Key points .............................................................................................................................. 102

Video trigger .......................................................................................................................... 104

Key points .............................................................................................................................. 104

Pulse width trigger ................................................................................................................. 104

Key points .............................................................................................................................. 105

Trigger frequency readout ..................................................................................................... 105

Knobs and buttons ................................................................................................................. 106

Utility .......................................................................................................................................... 107

EDU-models .......................................................................................................................... 107

Non-EDU-models .................................................................................................................. 108

Key points .............................................................................................................................. 109

File utilities for the USB flash drive ..................................................................................... 110

Vertical controls ......................................................................................................................... 111

Channel vertical menus ......................................................................................................... 111

Knobs ..................................................................................................................................... 112

Key points .............................................................................................................................. 113

Zoom controls ............................................................................................................................. 113

Table of Contents

Specifications

Model overview .......................................................................................................................... 115

Vertical system – Analog channels ............................................................................................ 115

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual v

Table of Contents

Horizontal system — Analog channels ...................................................................................... 116

Input/Output ports ....................................................................................................................... 116

Data storage ................................................................................................................................ 117

Acquisition system ..................................................................................................................... 117

Trigger system ............................................................................................................................ 118

Waveform measurements ........................................................................................................... 118

Waveform math .......................................................................................................................... 119

Autoset ........................................................................................................................................ 119

Autorange ................................................................................................................................... 119

Frequency counter ...................................................................................................................... 120

Display system ............................................................................................................................ 120

Power source ............................................................................................................................... 121

Physical characteristics ............................................................................................................... 121

Environmental ............................................................................................................................ 122

TPP0051 TPP0101 and TPP0201 series 10X passive probes information

Connecting the probe to the oscilloscope ................................................................................... 123

Compensating the probe ............................................................................................................. 124

Connecting the probe to the circuit ............................................................................................. 125

Standard accessories ................................................................................................................... 125

Optional accessories ................................................................................................................... 127

Specifications .............................................................................................................................. 127

Performance graphs .................................................................................................................... 128

Safety summary .......................................................................................................................... 130

To avoid fire or personal injury ............................................................................................. 130

Safety terms and symbols terms in this manual. ................................................................... 130

Accessories and options

Cleaning

General care ................................................................................................................................ 137

Cleaning ...................................................................................................................................... 137

Default setup

Font licenses

vi TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Important safety information

This manual contains information and warnings that must be followed by the user for safe operation and to keep the product in a safe condition.

To safely perform service on this product, see the Service safety summary that follows the General safety summary.

General safety summary

Use the product only as specified. Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Carefully read all instructions. Retain these instructions for future reference.

This product shall be used in accordance with local and national codes.

For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition to the safety precautions specified in this manual.

The product is designed to be used by trained personnel only.

Only qualified personnel who are aware of the hazards involved should remove the cover for repair, maintenance, or adjustment.

Before use, always check the product with a known source to be sure it is operating correctly.

This product is not intended for detection of hazardous voltages.

Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.

While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component manuals for warnings and cautions related to operating the system.

When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual vii

Important safety information

To avoid fire or personal

injury

Use proper power cord. Use only the power cord specified for this product and

certified for the country of use. Do not use the provided power cord for other products.

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. Do not disable the power cord grounding connection.

Power disconnect. The power switch disconnects the product from the power source. See instructions for the location. Do not position the equipment so that it is difficult to disconnect the power switch; it must remain accessible to the user at all times to allow for quick disconnection if needed.

Connect and disconnect properly. Do not connect or disconnect probes or test leads while they are connected to a voltage source. Use only insulated voltage probes, test leads, and adapters supplied with the product, or indicated by Tektronix to be suitable for the product.

Observe all terminal ratings. To avoid fire or shock hazard, observe all rating and markings on the product. Consult the product manual for further ratings information before making connections to the product. Do not exceed the Measurement Category (CAT) rating and voltage or current rating of the lowest rated individual component of a product, probe, or accessory. Use caution when using 1:1 test leads because the probe tip voltage is directly transmitted to the product.

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

Do not float the common terminal above the rated voltage for that terminal.

Do not operate without covers. Do not operate this product with covers or panels removed, or with the case open. Hazardous voltage exposure is possible.

Avoid exposed circuitry. Do not touch exposed connections and components when power is present.

Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualified service personnel.

Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of the product, turn it off and disconnect the power cord. Clearly mark the product to prevent its further operation.

Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. Do not use probes or test leads if they are damaged, if there is exposed metal, or if a wear indicator shows.

Examine the exterior of the product before you use it. Look for cracks or missing pieces.

Use only specified replacement parts.

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

viii TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Important safety information

Wear eye protection. Wear eye protection if exposure to high-intensity rays or laser radiation exists.

Do not operate in wet/damp conditions. Be aware that condensation may occur if a unit is moved from a cold to a warm environment.

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry. Remove the input signals before you clean

the product.

Provide proper ventilation. Refer to the installation instructions in the manual for details on installing the product so it has proper ventilation.

Slots and openings are provided for ventilation and should never be covered or otherwise obstructed. Do not push objects into any of the openings.

Provide a safe working environment. Always place the product in a location convenient for viewing the display and indicators.

Avoid improper or prolonged use of keyboards, pointers, and button pads. Improper or prolonged keyboard or pointer use may result in serious injury.

Probes and test leads

Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries.

Before connecting probes or test leads, connect the power cord from the power connector to a properly grounded power outlet.

Keep fingers behind the protective barrier, protective finger guard, or tactile indicator on the probes.

Remove all probes, test leads and accessories that are not in use.

Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and adapters for any measurement.

Beware of high voltages. Understand the voltage ratings for the probe you are using and do not exceed those ratings. Two ratings are important to know and understand:

■

The maximum measurement voltage from the probe tip to the probe reference lead

■

The maximum floating voltage from the probe reference lead to earth ground

These two voltage ratings depend on the probe and your application. Refer to the Specifications section of the manual for more information.

WARNING. To prevent electrical shock, do not exceed the maximum measurement or maximum floating voltage for the oscilloscope input BNC connector, probe tip, or probe reference lead.

Connect and disconnect properly. Connect the probe output to the measurement product before connecting the probe to the circuit under test. Connect the probe reference lead to the circuit under test before connecting the probe input. Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement product.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual ix

Important safety information

Connect the probe reference lead to earth ground only.

Do not connect a current probe to any wire that carries voltages or frequencies above the current probe voltage rating.

Inspect the probe and accessories. Before each use, inspect probe and accessories for damage (cuts, tears, or defects in the probe body, accessories, or cable jacket). Do not use if damaged.

Ground-referenced oscilloscope use. Do not float the reference lead of this probe when using with ground-referenced oscilloscopes. The reference lead must be connected to earth potential (0 V).

Service safety summary

The Service safety summary section contains additional information required to safely perform service on the product. Only qualified personnel should perform service procedures. Read this Service safety summary and the General safety summary before performing any service procedures.

To avoid electric shock. Do not touch exposed connections.

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 product power and disconnect the power cord from the mains power before removing any covers or panels, or opening the case for servicing.

Use care when servicing with power on. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components.

Verify safety after repair. Always recheck ground continuity and mains dielectric strength after performing a repair.

x TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Important safety information

Terms in the manual

These terms may appear in this manual:

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

CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.

Terms on the product

These terms may appear on the product:

■

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

Symbols on the product

■

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

■

CAUTION indicates a hazard to property including the product.

When this symbol is marked on the product, be sure to consult the manual to find out the nature of the potential hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to ratings in the manual.)

The following symbols may appear on the product:

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual xi

Important safety information

xii TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Compliance information

This section lists the EMC (electromagnetic compliance), safety, and environmental standards with which the instrument complies.

EMC compliance

EC Declaration of

Conformity – EMC

Meets intent of Directive 2014/30/EU for Electromagnetic Compatibility. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities:

EN 61326-1, EN 61326-2-1. EMC requirements for electrical equipment for measurement, control, and laboratory use.

■

CISPR 11. Radiated and conducted emissions, Group 1, Class A

■

IEC 61000-4-2. Electrostatic discharge immunity

■

IEC 61000-4-3. RF electromagnetic field immunity

■

IEC 61000-4-4. Electrical fast transient / burst immunity

■

IEC 61000-4-5. Power line surge immunity

■

IEC 61000-4-6. Conducted RF immunity

■

IEC 61000-4-8. Power frequency magnetic field immunity test

■

IEC 61000-4-11. Voltage dips and interruptions immunity

1 2

EN 61000-3-2. AC power line harmonic emissions

EN 61000-3-3. Voltage changes, fluctuations, and flicker

This product is intended for use in nonresidential areas only. Use in residential areas may cause electromagnetic interference.

Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object.

For compliance with the EMC standards listed here, high quality shielded interface cables should be used.

The instrument will exhibit ≤ 3.0 division waveform displacement and ≤ 6.0 division increase in peak-to-peak noise when subjected to radiated interference per IEC 61000-4-3.

The instrument will exhibit ≤ 2.0 division waveform displacement and ≤ 4.0 division increase in peak-to-peak noise when subjected to conducted interference per IEC 61000-4-6.

Performance Criterion C applied at the 70%/25 cycle Voltage-Dip and the 0%/250 cycle Voltage-Interruption test levels (IEC 61000-4-11). If the instrument powers down upon a voltage dip or interruption, it will take longer than ten seconds to return to the previous operating state.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual xiii

Compliance information

EMC compliance

Australia / New Zealand

Declaration of Conformity

– EMC

FCC – EMC

Russian federation

Meets the intent of Directive 2004/108/EC for Electromagnetic Compatibility when it is used with the product(s) stated in the specifications table. Refer to the EMC specification published for the stated products. May not meet the intent of the directive if used with other products.

European Contact.

Complies with the EMC provision of the Radiocommunications Act per the following standard, in accordance with ACMA:

■

EN 61326-1 and EN 61326-2-1. Radiated and conducted emissions, Group 1, Class A.

Exempt from FCC 47 CFR, Part 15.

Safety compliance

EU declaration of

conformity – low voltage

This section lists the safety standards with which the product complies and other safety compliance information.

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

Low Voltage Directive 2014/35/EU.

■

EN 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

■

EN 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 2-030: Particular requirements for testing and measuring circuits.

■

EN 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test equipment.

xiv TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Compliance information

■

U.S. nationally recognized

testing laboratory listing

UL 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

■

UL 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 2-030: Particular requirements for testing and measuring circuits.

■

UL 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test equipment.

■

Canadian certification

CAN/CSA-C22.2 No. 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

■

CAN/CSA-C22.2 No. 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 2-030: Particular requirements for testing and measuring circuits.

■

CAN/CSA-C22.2 No. 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test equipment.

Additional compliances

Equipment type

Safety class

Safety certification of

plug-in or VXI modules

■

IEC 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

■

IEC 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 2-030: Particular requirements for testing and measuring circuits.

■

UL 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test equipment.

Test and measuring equipment.

Class 1 – grounded product.

The safety certification is valid only when installed in an appropriately approved (by a USA NRTL or a Canada Certified Organization) mainframe.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual xv

Compliance information

Pollution degree

description

Pollution degree

A measure of the contaminants that could occur in the environment around and within a product. Typically the internal environment inside a product is considered to be the same as the external. Products should be used only in the environment for which they are rated.

■

Pollution Degree 1. No pollution or only dry, nonconductive pollution occurs. Products in this category are generally encapsulated, hermetically sealed, or located in clean rooms.

■

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.

■

Pollution Degree 3. Conductive pollution, or dry, nonconductive pollution that becomes conductive due to condensation. These are sheltered locations where neither temperature nor humidity is controlled. The area is protected from direct sunshine, rain, or direct wind.

■

Pollution Degree 4. Pollution that generates persistent conductivity through conductive dust, rain, or snow. Typical outdoor locations.

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

Measurement and

overvoltage category

descriptions

Measurement terminals on this product may be rated for measuring mains voltages from one or more of the following categories (see specific ratings marked on the product and in the manual).

■

Measurement Category II. For measurements performed on circuits directly connected to the low-voltage installation.

■

Measurement Category III. For measurements performed in the building installation.

■

Measurement Category IV. For measurements performed at the source of low-voltage installation.

NOTE. Only mains power supply circuits have an overvoltage category rating. Only measurement circuits have a measurement category rating. Other circuits within the product do not have either rating.

xvi TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Compliance information

Mains overvoltage

Overvoltage Category II (as defined in IEC 61010-1)

category rating

Environmental compliance

This section provides information about the environmental impact of the product.

Product end-of-life

handling

Observe the following guidelines when recycling an instrument or component:

Equipment recycling. Production of this equipment required the extraction and use of natural resources. The equipment may contain substances that could be harmful to the environment or human health if improperly handled at the product’s end of life. To avoid release of such substances into the environment and to reduce the use of natural resources, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately.

This symbol indicates that this product complies with the applicable European Union requirements according to Directives 2012/19/EU and 2006/66/EC on waste electrical and electronic equipment (WEEE) and batteries. For information about recycling options, check the Tektronix Web site (www.tek.com/productrecycling).

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual xvii

Compliance information

xviii TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Getting started

General features

TBS1000B and TBS1000B-EDU Series Digital Storage Oscilloscopes are small, lightweight, benchtop instruments, which you can use to take ground-referenced measurements.

This chapter describes how to do the following tasks:

■

Install your product

■

Perform a brief functional check

■

Perform a probe check and compensate probes

■

Match your probe attenuation factor

■

Use the self calibration routine

NOTE. You can select a language to display on the screen after you power on the oscilloscope. At any time, you can access the Utility ► Language option to select a language.

Model Channels Bandwidth Sample rate Display

TBS1032B

TBS1052B-EDU 2 50 MHz 1 GS/s Color

TBS1052B 2 50 MHz 1 GS/s Color

TBS1072B-EDU 2 70 MHz 1 GS/s Color

TBS1072B 2 70 MHz 1 GS/s Color

TBS1102B-EDU 2 100 MHz 2 GS/s Color

TBS1102B 2 100 MHz 2 GS/s Color

TBS1152B-EDU 2 150 MHz 2 GS/s Color

TBS1152B 2 150 MHz 2 GS/s Color

TBS1202B-EDU 2 200 MHz 2 GS/s Color

TBS1202B 2 200 MHz 2 GS/s Color

■

2 30 MHz 500 MS/s Color

Context-sensitive help system

7-inch color LCD display

Educational courseware integrated in the instrument (EDU models only)

Limit tests, data logging, and trend plots (non-EDU models only)

Dual-channel independent counters

Available only in North America and Europe.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 1

Getting started

■

Selectable 20 MHz bandwidth limit

■

2,500 point record length for each channel

■

Autoset

■

Autoranging

■

Setup and waveform storage

■

USB Flash Drive port for file storage

■

PC communications through the USB Device port with OpenChoice PC Communications software

■

Connect to a GPIB controller through an optional TEK-USB-488 adapter

■

Cursors with readouts

■

Trigger frequency readout

■

34 automatic measurements — and measurement gating

■

Waveform averaging and peak detection

■

Math functions: +, -, and × operations

Installation

Power cord

Power source

■

Fast Fourier Transform (FFT)

■

Pulse Width trigger capability

■

Video trigger capability with line-selectable triggering

■

External trigger

■

Variable persistence display

■

User interface and help topics in 11 languages

■

Zoom feature

Use only the power cord provided with your oscilloscope. Appendix C: Accessories lists the standard and the optional accessories.

Use a power source that delivers 90 to 264 VAC 400 Hz power source, it must deliver 90 to 132 VAC

, 45 to 66 Hz. If you have a

RMS

, 360 to 440 Hz.

RMS

The product's maximum power consumption is 30 W.

2 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Getting started

Security loop

Ventilation

Use a standard laptop computer security lock, or thread a security cable through the built-in cable channel to secure your oscilloscope to your location.

Security cable channel Security lock hole Power cord

NOTE. The oscilloscope cools by convection. Keep two inches clear on the sides and top of the product to allow adequate air flow.

Functional check

Perform this functional check to verify that your oscilloscope is operating correctly.

1. Power on the oscilloscope.

2. Push the Default Setup button. The default Probe option attenuation setting

is 10X.

ON/OFF button

Default Setup button

3. Connect the TPP0051, TPP0101, or TP0201 probe to channel 1 on the oscilloscope. To do this, align the slot in the probe connector with the key on the channel 1 BNC, push to connect, and twist to the right to lock the probe in place.

4. Connect the probe tip and reference lead to the PROBE COMP terminals.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 3

Getting started

PROBE COMP

5. Push the Autoset button. Within a few seconds, you should see a square wave in the display of about 5 V peak-to-peak at 1 kHz.

6. Push the channel 1 menu button on the front panel twice to remove channel 1, push the channel 2 menu button to display channel 2, and repeat steps 3 through 5.

7. Check that the instruction passed the calibration tests. Push Utility ► - more

- page 1 of 2 (push more again on EDU models) ► System Status ► Misc..

Look for Calibration PASSED

Calibration: PASSED

4 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Probe safety

Getting started

Check and observe probe ratings before using probes.

A guard around the TPP0051, TPP0101, or TPP0201 probe body provides a finger barrier for protection from electric shock.

Finger guard

WARNING. To avoid electric shock when using the probe, keep fingers behind the guard on the probe body.

To avoid electric shock while using the probe, do not touch metallic portions of the probe head while it is connected to a voltage source.

Connect the probe to the oscilloscope, and connect the ground terminal to ground before you take any measurements.

Manual probe compensation

You can manually perform this adjustment to match your probe to the input channel.

1. Push the 1 ► Probe ► Voltage ► Attenuation option and select 10X. Connect the appropriate TPP0051, TPP0101, or TPP0201 probe to channel 1 on the oscilloscope. If you use the probe hook-tip, ensure a proper connection by firmly inserting the tip onto the probe.

2. Attach the probe tip to the PROBE COMP ~5V@1kHz terminal and the reference lead to the PROBE COMP chassis terminal. Display the channel, and then push the Autoset button.

PROBE COMP Autoset button

3. Check the shape of the displayed waveform.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 5

Getting started

Overcompensated

Undercompensated

Compensated correctly

4. If necessary, adjust your probe. Repeat if necessary.

Probe attenuation setting

Probes are available with various attenuation factors which affect the vertical scale of the signal.

Select the factor that matches the attenuation of your probe. For example, to match a probe set to 10X connected to CH 1, push the 1 ► Probe ► Voltage ► Attenuation option, and select 10X.

NOTE. The default setting for the Attenuation option is 10X.

If you change the Attenuation switch on a P2220 probe, you also need to change the oscilloscope Attenuation option to match. Switch settings are 1X and 10X.

Attenuation switch

NOTE. When the Attenuation switch is set to 1X, the P2220 probe limits the bandwidth of the oscilloscope to 6 MHz. To use the full bandwidth of the oscilloscope, be sure to set the switch to 10X.

6 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Getting started

Current probe scaling

Current probes provide a voltage signal proportional to the current. You need to set the oscilloscope to match the scale of your current probe. The default scale is 10 A/V.

For example, to set the scale for a current probe connected to channel 1, push the 1 ► Probe ► Current ► Scale option, and select an appropriate value.

Self calibration

The self calibration routine lets you optimize the oscilloscope signal path for maximum measurement accuracy. You can run the routine at any time but you should always run the routine if the ambient temperature changes by 5 °C (9 °F) or more. The routine takes about two minutes.

For accurate calibration, power on the oscilloscope and wait twenty minutes to ensure it is warmed up.

To compensate the signal path, disconnect any probes or cables from the input connectors. Then, access the Utility ► Do Self Cal option, and follow the directions on the screen.

Firmware updates through the internet

Update your TBS1000B’s firmware to take advantage of new features and bug fixes. You can use the Internet and a USB flash drive to update your oscilloscope. If you do not have access to the Internet, contact Tektronix for information on update procedures.

Check the version of your

current firmware

1. Power on the oscilloscope.

2. For the TBS1000B: Push Utility ► - more - page 1 of 2 ► System Status ► Misc..

For the TBS1000B-EDU: Push Utility ► - more - page 1 of 3 ►- more page 2 of 3 ► System Status ► Misc..

3. The oscilloscope displays the firmware version number.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 7

Getting started

Check the version of the latest available firmware

If the latest available

firmware is newer than

that on your TBS1000B

update your product

firmware

1. Open up a Web browser and go to www.tektronix.com/software.

2. Enter “TBS1000B” in the search box.

3. Scan the list of available software for the latest TBS1000B firmware. Check

the version number.

1. Download the latest firmware from www.tektronix.com/software to your PC. Unzip the files, if needed, and copy the designated firmware file into the root folder of a USB flash drive.

2. Insert the USB flash drive into the front-panel USB port on your oscilloscope.

3. Push Utility ► - more - page 1 of 2 ► File Utilities ► - more - page 1 of 2 ► Update Firmware ► Update Firmware

It takes several minutes to update the firmware. Your oscilloscope will prompt you when the update is complete. Do not remove the USB flash drive or power off the oscilloscope until the firmware update is complete.

8 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Operating basics

The front panel is divided into easy-to-use functional areas.

This chapter provides you with a quick overview of the controls and the information displayed on the screen.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 9

Operating basics

Display area

In addition to displaying waveforms, the display provides details about the waveform and the oscilloscope control settings.

NOTE. For details on displaying the FFT function, Displaying the FFT spectrum on page 55

The items shown below may appear in the display. Not all of these items are visible at any given time. Some readouts move outside the graticule area when menus are turned off.

1. The acquisition readout shows when an acquisition is running or stopped. Icons are:

Run: Acquisition enabled

Stop: Acquisitions not enabled.

2. The trigger position icon shows the trigger position in the acquisition. Turn the Horizontal Position knob to adjust the position of the marker.

3. The trigger status readout shows:

Armed: The oscilloscope is acquiring pretrigger data. All triggers are ignored in this state.

Ready: All pretrigger data has been acquired and the oscilloscope is ready to accept a trigger.

Trig’d: The oscilloscope has seen a trigger and is acquiring the posttrigger data.

Stop: The oscilloscope has stopped acquiring waveform data.

10 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Operating basics

Acq. Complete: The oscilloscope has completed a Single Sequence acquisition.

Auto: The oscilloscope is in auto mode and is acquiring waveforms in the absence of trigger.

Scan: The oscilloscope is acquiring and displaying waveform data continuously in scan mode.

4. The center graticule readout shows the time at the center graticule. The trigger time is zero.

5. The trigger level icon shows the Edge or Pulse Width trigger level on the waveform. The icon color corresponds to the trigger source color.

6. The trigger readout shows the trigger source, level, and frequency. Trigger readouts for other trigger types show other parameters.

Message area

7. The horizontal position/scale readout shows the main time base setting (adjust with the Horizontal Scale knob).

8. The channel readout shows the vertical scale factor (per division) for each channel. Adjust with the Vertical Scale knob for each channel.

9. The waveform baseline indicator shows the ground reference points (the zero-volt level) of a waveform (ignoring the effect of offset). The icon colors correspond to the waveform colors. If there is no marker, the channel is not displayed.

The oscilloscope displays a message area at the bottom of the screen that conveys the following types of helpful information:

■

Suggestion of what you might want to do next, such as when you push the Measure button and then the Ch1 button:

Use multipurpose purpose knob to select measurement type

■

Information about the action the oscilloscope performed, such as when you push the Default Setup button:

Default setup recalled

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 11

Operating basics

Using the menu system

When you push a front-panel button, the oscilloscope displays the corresponding menu on the right side of the screen. The menu shows the options that are available when you push the unlabeled option buttons directly to the right of the screen.

Vertical controls

Position (1 and 2). Positions a waveform vertically.

1 & 2 Menu. Displays the Vertical menu selections and toggles the display

of the channel waveform on and off.

Scale (1 & 2). Selects vertical scale factors.

12 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Operating basics

Horizontal controls

Position. Adjusts the horizontal position of all channel and math waveforms. The resolution of this control varies with the time base setting.

NOTE. To make a large adjustment to the horizontal position, turn the Horizontal Scale knob to a larger value, change the horizontal position, and then turn the Horizontal Scale knob back to the previous value.

NOTE. To set the horizontal position to zero, push the horizontal position knob.

Acquire. Displays the acquisition modes — Sample, Peak Detect, and Average.

Scale. Selects the horizontal time/division (scale factor).

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 13

Operating basics

Trigger controls

Trigger Menu. When it is pressed once, it displays the Trigger Menu. When it is kept pressed for more than 1.5 seconds, it will show the trigger view, meaning it will display the trigger waveform in place of the channel waveform. Use the trigger view to see how the trigger settings, such as coupling, affect the trigger signal. Releasing the button will stop the trigger view.

Level. When you use an Edge or Pulse trigger, the Level knob sets the amplitude level that the signal must cross to acquire a waveform. Push this knob to set the trigger level to the vertical midpoint between the peaks of the trigger signal (set to 50%).

Force Trig. Use this to complete the waveform acquisition whether or not the oscilloscope detects a trigger. This is useful for single sequence acquisitions and Normal trigger mode. (In Auto trigger mode, the oscilloscope automatically forces triggers periodically if it does not detect a trigger.)

14 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Menu and control buttons

Refer to the Reference chapter for detailed information on the menu and button controls.

Multipurpose Knob. The function is determined by the displayed menu or selected menu option. When active, the adjacent LED lights. The next table lists the functions.

Operating basics

Active menu or option Knob operation Description

Cursor Turn Scroll to position the selected cursor

Help Turn, push Highlights entries in the Index. Highlights links in

a topic. Push to select the highlighted item.

Math Turn, push Scroll to position and scale the Math waveform.

Scroll and push to select the operation.

FFT Turn, push Scroll and push to select source, window type

and zoom values

Measure Turn, push Scroll to highlight and push to select the type of

automatic measurement for each source

Turn Scroll to position the selected gating cursors

Save/Recall Turn, push Scroll to highlight and push to select the action

and file format. Scroll through the list of files.

Trigger Turn, push Scroll to highlight and push to select the trigger

type, source, slope, mode, coupling, polarity, sync, video standard, trigger when operation. Turn to set the trigger holdoff and pulse width values .

Utility Scroll, push Scroll to highlight and push to select

miscellaneous menu items. Turn to set the backlight value.

Vertical Scroll, push Scroll to highlight and push to select

miscellaneous menu items.

Zoom Scroll Scroll to change the scale and position of the

zoom window.

Save/Recall. Displays the Save/Recall Menu for setups and waveforms.

Measure. Displays the automated measurements menu.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 15

Operating basics

Acquire. Displays the Acquire Menu.

Ref. Displays the Reference Menu to quickly display and hide reference

waveforms stored in the oscilloscope non-volatile memory.

Utility. Displays the Utility Menu.

Cursor. Displays the Cursor Menu. Cursors remain visible (unless the Type

option is set to Off) after you leave the Cursor Menu but are not adjustable.

Help. Displays the Help Menu.

Default Setup. Recalls the factory setup.

Autoset. Automatically sets the oscilloscope controls to produce a usable display

of the input signals. When held for more than 1.5 seconds, displays the Autorange Menu, and activates or deactivates the autoranging function.

Single. (Single sequence) Acquires a single waveform and then stops.

Run/Stop. Continuously acquires waveforms or stops the acquisition.

Input connectors

Save.

1 and 2. Input connectors for waveform display.

Ext Trig. Input connector for an external trigger source. Use the Trigger Menu to

select the Ext, or Ext/5 trigger source. Push and hold the Trigger Menu button to see trigger view, which will show how the trigger settings affect the trigger signal, such as trigger coupling.

PROBE COMP. Probe compensation output and chassis reference. Use to electrically match a voltage probe to the oscilloscope input circuit. See Manual

probe compensation on page 5.

By default, performs the Save function to the USB flash drive.

16 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Operating basics

Other front-panel items

USB Flash Drive Port. Insert a USB flash drive for data storage or retrieval.

For flash drives with an LED, the LED blinks when saving data to or retrieving data from the drive. Wait until the LED stops blinking before you remove the drive.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 17

Operating basics

18 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Understanding oscilloscope functions

This chapter contains general information that you need to understand before you use an oscilloscope. To use your oscilloscope effectively, you need to learn about the following functions:

■

Setting up the oscilloscope

■

Triggering

■

Acquiring signals (waveforms)

■

Scaling and positioning waveforms

■

Measuring waveforms

The next figure shows a block diagram of the various functions of the oscilloscope and their relationships to each other.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 19

Understanding oscilloscope functions

Setting up the oscilloscope

You should become familiar with several functions that you may use often when operating your oscilloscope: Autoset, Autorange, saving a setup, and recalling a setup.

Using autoset

Using autorange

Saving a setup

Each time you push the Autoset button, the Autoset function obtains a stable waveform display for you. It automatically adjusts the vertical scale, horizontal scale and trigger settings. Autoset also displays several automatic measurements in the graticule area, depending on the signal type.

Autorange is a continuous function that you can enable or disable. The function adjusts setup values to track a signal when the signal exhibits large changes or when you physically move the probe to a different point. To use autorange, push the Autoset button for more than 1.5 seconds.

The oscilloscope saves the current setup if you wait five seconds after the last change before you power off the oscilloscope. The oscilloscope recalls this setup the next time you apply power.

You can use the Save/Recall Menu to save up to ten different setups.

You can also save setups to a USB flash drive. The oscilloscope accommodates a USB flash drive for removable data storage and retrieval. See USB flash drive

port on page 61.

Recalling a setup

Default setup

The oscilloscope can recall the last setup before the oscilloscope was powered off, any saved setups, or the default setup. See Save-Recall on page 96.

The oscilloscope is set up for normal operation when it is shipped from the factory. This is the default setup. To recall this setup, push the Default Setup button. To view the default settings, refer to Appendix D: Default Setup.

20 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Understanding oscilloscope functions

Triggering

The trigger determines when the oscilloscope starts to acquire data and to display a waveform. When a trigger is set up properly, the oscilloscope converts unstable displays or blank screens into meaningful waveforms.

Triggered waveform

For oscilloscope-specific descriptions, refer to the Operating Basics chapter. See

Trigger controls on page 14, and in the Reference chapter, see Trigger controls

on page 102.

When you push the Run/Stop or Single button to start an acquisition, the oscilloscope goes through the following steps:

1. Acquires enough data to fill the portion of the waveform record to the left of the trigger point. This is called the pretrigger.

2. Continues to acquire data while waiting for the trigger condition to occur.

3. Detects the trigger condition.

4. Continues to acquire data until the waveform record is full.

5. Displays the newly-acquired waveform.

NOTE. For Edge and Pulse triggers, the oscilloscope counts the rate at which trigger events occur to determine trigger frequency. The oscilloscope displays the frequency in the lower right corner of the screen.

Untriggered waveforms

Source

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 21

You can use the Trigger Source options to select the signal that the oscilloscope uses as a trigger. The source can be the AC power line (available only with Edge triggers), or any signal connected to a channel BNC or to the Ext Trig BNC.

Understanding oscilloscope functions

Types

Modes

Coupling

The oscilloscope provides three types of triggers: Edge, Video, and Pulse Width.

You can select the Auto or the Normal trigger mode to define how the oscilloscope acquires data when it does not detect a trigger condition. See Mode

options.

To perform a single sequence acquisition, push the Single button.

You can use the Trigger Coupling option to determine which part of the signal will pass to the trigger circuit. This can help you attain a stable display of the waveform.

To use trigger coupling, push the Trigger Menu button, select an Edge or Pulse trigger, and select a Coupling option.

NOTE. Trigger coupling affects only the signal passed to the trigger system. It does not affect the bandwidth or coupling of the signal displayed on the screen.

To view the conditioned signal being passed to the trigger circuit, enable trigger view by pushing and holding down the Trigger Menu button for more than

1.5 seconds.

Position

Slope and level

The horizontal position control establishes the time between the trigger and the screen center. Refer to Horizontal Scale and Position; Pretrigger Information for information on how to use this control to position the trigger. Horizontal scale

and position; pretrigger information on page 24

The Slope and Level controls help to define the trigger. The Slope option (Edge trigger type only) determines whether the oscilloscope finds the trigger point on the rising or the falling edge of a signal. The Trigger Level knob controls where on the edge the trigger point occurs.

Rising edge Falling edge

Trigger level can be adjusted vertically

Trigger can be rising or falling

22 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Understanding oscilloscope functions

Acquiring signals

When you acquire a signal, the oscilloscope converts it into a digital form and displays a waveform. The acquisition mode defines how the signal is digitized, and the time base setting affects the time span and level of detail in the acquisition.

Acquisition modes

Time base

There are three acquisition modes: Sample, Peak Detect, and Average.

Sample. In this acquisition mode, the oscilloscope samples the signal in evenly spaced intervals to construct the waveform. This mode accurately represents signals most of the time.

However, this mode does not acquire rapid variations in the signal that may occur between samples. This can result in aliasing, and may cause narrow pulses to be missed. In these cases, you should use the Peak Detect mode to acquire data. See

time-domain aliasing.

Peak Detect. In this acquisition mode, the oscilloscope finds the highest and lowest values of the input signal over each sample interval and uses these values to display the waveform. In this way, the oscilloscope can acquire and display narrow pulses, which may have otherwise been missed in Sample mode. Noise will appear to be higher in this mode.

Average. In this acquisition mode, the oscilloscope acquires several waveforms, averages them, and displays the resulting waveform. You can use this mode to reduce random noise.

The oscilloscope digitizes waveforms by acquiring the value of an input signal at discrete points. The time base allows you to control how often the values are digitized.

To adjust the time base to a horizontal scale that suits your purpose, use the Horizontal Scale knob.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 23

Understanding oscilloscope functions

Scaling and positioning waveforms

You can change the display of waveforms by adjusting the scale and position. When you change the scale, the waveform display will increase or decrease in size. When you change the position, the waveform will move up, down, right, or left.

The channel indicator (located on the left of the graticule) identifies each waveform on the display. The indicator points to the ground reference level of the waveform record.

You can view the display area and readouts. See Display area on page 10.

Vertical scale and position

Horizontal scale and

position; pretrigger

information

You can change the vertical position of waveforms by moving them up or down in the display. To compare data, you can align a waveform above another or you can align waveforms on top of each other.

You can change the vertical scale of a waveform. The waveform display will contract or expand relative to the ground reference level.

For oscilloscope-specific descriptions, see Vertical controls on page 12, and also in the Reference chapter, see Vertical controls on page 111.

You can adjust the Horizontal Position control to view waveform data before the trigger, after the trigger, or some of each. When you change the horizontal position of a waveform, you are actually changing the time between the trigger and the center of the display. (This appears to move the waveform to the right or left on the display.)

For example, if you want to find the cause of a glitch in your test circuit, you might trigger on the glitch and make the pretrigger period large enough to capture data before the glitch. You can then analyze the pretrigger data and perhaps find the cause of the glitch.

You change the horizontal scale of all the waveforms by turning the Horizontal Scale knob. For example, you might want to see just one cycle of a waveform to measure the overshoot on its rising edge.

The oscilloscope shows the horizontal scale as time per division in the scale readout. Since all active waveforms use the same time base, the oscilloscope only displays one value for all the active channels, except when you use zoom feature.

For oscilloscope-specific descriptions, see Position on page 22, and also in the Reference chapter, see Horizontal on page 89.

Time Domain Aliasing. Aliasing occurs when the oscilloscope does not sample the signal fast enough to construct an accurate waveform record. When this happens, the oscilloscope displays a waveform with a frequency lower than the actual input waveform, or triggers and displays an unstable waveform.

24 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Understanding oscilloscope functions

Actual high-frequency waveform

Apparent low-frequency waveform due to aliasing

Sample points

The oscilloscope accurately represents signals, but is limited by the probe bandwidth, the oscilloscope bandwidth, and the sample rate. To avoid aliasing, the oscilloscope must sample the signal more than twice as fast as the highest frequency component of the signal.

The highest frequency that the oscilloscope sampling rate can theoretically represent is the Nyquist frequency. The sample rate is called the Nyquist rate, and is twice the Nyquist frequency.

The oscilloscope maximum sample rates are at least ten times the bandwidth. These high sample rates help reduce the possibility of aliasing.

There are several ways to check for aliasing:

■

Turn the horizontal Scale knob to change the horizontal scale. If the shape of the waveform changes drastically, you may have aliasing.

■

Select the Peak Detect acquisition mode. This mode samples the highest and lowest values so that the oscilloscope can detect faster signals. If the shape of the waveform changes drastically, you may have aliasing. See Acquisition

modes on page 23.

■

If the trigger frequency is faster than the display information, you may have aliasing or a waveform that crosses the trigger level multiple times. Examining the waveform allows you to identify whether the shape of the signal is going to allow a single trigger crossing per cycle at the selected trigger level.

If multiple triggers are likely to occur, select a trigger level that will generate only a single trigger per cycle. If the trigger frequency is still faster than the display indicates, you may have aliasing.

If the trigger frequency is slower, this test is not useful.

■

If the signal you are viewing is also the trigger source, use the graticule or the cursors to estimate the frequency of the displayed waveform. Compare this to the Trigger Frequency readout in the lower right corner of the screen. If they differ by a large amount, you may have aliasing.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 25

Understanding oscilloscope functions

Taking measurements

The oscilloscope displays graphs of voltage versus time and can help you to measure the displayed waveform.

There are several ways to take measurements. You can use the graticule, the cursors, or an automated measurement.

Graticule

This method allows you to make a quick, visual estimate. For example, you might look at a waveform amplitude and determine that it is a little more than 100 mV.

You can take simple measurements by counting the major and minor graticule divisions involved and multiplying by the scale factor.

For example, if you counted five major vertical graticule divisions between the minimum and maximum values of a waveform and knew you had a scale factor of 100 mV/division, then you could calculate your peak-to-peak voltage as follows:

5 divisions x 100 mV/division = 500 mV

Cursor

Cursors

26 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

This method allows you to take measurements by moving the cursors, which always appear in pairs, and reading their numeric values from the display readouts. There are two types of cursors: Amplitude and Time.

When you use cursors, be sure to set Source to the waveform on the display that you want to measure.

You can use the cursors to define the measurement gating area, after you have turned on Measure Gating in the Measure menu. The oscilloscope will restrict the gated measurement you take to the data between the two cursors.

To use cursors, push the Cursor button.

Amplitude Cursors. Amplitude cursors appear as horizontal lines on the display and measure the vertical parameters. Amplitudes are referenced to the reference level. For the FFT function, these cursors measure magnitude.

Understanding oscilloscope functions

Time Cursors. Time cursors appear as vertical lines on the display and measure both horizontal and vertical parameters. Times are referenced to the trigger point. For the FFT function, these cursors measure frequency.

Time cursors also include a readout of the waveform amplitude at the point the waveform crosses the cursor.

Automatic

The Measure Menu can take up to six automatic measurements. When you take automatic measurements, the oscilloscope does all the calculating for you. Because the measurements use the waveform record points, they are more accurate than the graticule or cursor measurements.

Automatic measurements use readouts to show measurement results. These readouts are updated periodically as the oscilloscope acquires new data.

For measurement descriptions, refer to the Reference chapter. See Measure on page 91.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 27

Understanding oscilloscope functions

28 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

This section presents a series of application examples. These simplified examples highlight the features of the oscilloscope and give you ideas for using it to solve your own test problems.

■

Taking simple measurements

■

Using Autorange to examine a series of test points

■

Taking cursor measurements

■

Analyzing signal detail

■

Using Autoset

Using the Measure Menu to take automatic measurements

Measuring two signals and calculating gain

Measuring ring frequency and ring amplitude

Measuring pulse width

Measuring rise time

Looking at a noisy signal

■

Using the average function to separate a signal from noise

■

Capturing a single-shot signal

■

Optimizing the acquisition

■

Measuring propagation delay

■

Triggering on a pulse width

■

Triggering on a video signal

■

Triggering on video fields and video lines

■

Using the window function to see waveform details

■

Analyzing a differential communication signal using Math functions

■

Viewing impedance changes in a network using XY mode and persistence

■

Data logging (non-EDU models only)

■

Limit testing (non-EDU models only)

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 29

Application examples

Taking simple measurements

You need to see a signal in a circuit, but you do not know the amplitude or frequency of the signal. You want to quickly display the signal and measure the frequency, period, and peak-to-peak amplitude.

Using autoset

To quickly display a signal, follow these steps:

1. Push the 1 (channel 1 menu) button.

2. Push Probe ► Voltage ►Attenuation ► 10X.

3. If using P2220 probes, set their switches to 10X.

4. Connect the channel 1 probe tip to the signal. Connect the reference lead to

the circuit reference point.

5. Push the Autoset button.

The oscilloscope sets the vertical, horizontal, and trigger controls automatically. If you want to optimize the display of the waveform, you can manually adjust these controls.

NOTE. The oscilloscope displays relevant automatic measurements in the waveform area of the screen based on the signal type that is detected.

For oscilloscope-specific descriptions, refer to the Reference chapter, Autoset on page 78.

30 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

Taking automatic

measurements

The oscilloscope can take automatic measurements of most displayed signals.

NOTE. If a question mark (?) appears in the Value readout, the signal is outside the measurement range. Adjust the Vertical Scale knob (volts/division) of the appropriate channel to decrease the sensitivity or change the horizontal Scale setting (seconds/division).

To measure signal frequency, period, and peak-to-peak amplitude, rise time, and positive width, follow these steps:

1. Push the Measure button to see the Measure Menu.

2. Push the channel 1 or the 2 button. The measure menu appears to the left.

3. Turn the Multipurpose knob to highlight the desired measurement. Push the

knob to select the desired measurement. .

The Value readout displays the measurement and updates.

4. Push the channel 1 or 2 button to select another measurement. You can display up to six measurements on the screen at a time.

Measurem ents

Period Frequency Peak-Peak Minimum Maximum Mean Cycle Mean Cursor Mean RMS Cycle RMS Cycle RMS Rise Time

Measure Gating On / Off

Ch1

Ch2

Math

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 31

Application examples

Measuring two signals

If you are testing a piece of equipment and need to measure the gain of the audio amplifier, you will need an audio generator that can inject a test signal at the amplifier input. Connect two oscilloscope channels to the amplifier input and output as shown next. Measure both signal levels and use the measurements to calculate the gain.

MeasureGa ting On-Off

Ch1

Ch2

Math

To activate and display the signals connected to channel 1 and to channel 2, and select measurements for the two channels, follow these steps:

1. Push the Autoset button.

2. Push the Measure button to see the Measure Menu.

3. Push the Ch1 side menu. The pop-up menu of measurement types appears to

the left.

4. Turn the Multipurpose knob to highlight Peak-Peak.

5. Push the Multipurpose knob to select Peak-Peak. A check should appear

next to the menu item and the Peak-to-Peak measurement for channel 1 should appear towards the bottom of the display.

32 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

6. Push the Ch1 side menu. The pop-up menu of measurement types appears to the left. .

7. Turn the Multipurpose knob to highlight Peak-Peak.

8. Push the Multipurpose knob to select Peak-Peak. A check should appear

next to the menu item and the peak-to-peak for channel 2 should appear towards the bottom of the display.

9. Read the displayed peak-to-peak amplitudes for both channels.

10. To calculate the amplifier voltage gain, use these equations:

VoltageGain = output amplitude/input amplitude

VoltageGain (dB) = 20 × log 10 (VoltageGain)

Using autorange to examine a series of test points

Application examples

If you have a machine that is malfunctioning, you may need to find the frequency and RMS voltage of several test points, and compare these values to ideal values. You are not able to access front-panel controls since you need to use both hands when probing test points that are difficult to physically reach.

1. Push the 1 (channel 1 menu) button.

2. Push Probe ► Voltage ► Attenuation. Chose the attenuation of the probe

attached to channel 1 from the pop-out selectable list of values by turning and pushing the Multipurpose knob.

3. Push the Autoset button for more than 1.5 seconds to activate autoranging, and select the Vertical and Horizontal option.

4. Push the Measure button to see the Measure Menu.

5. Push Ch1.

6. Turn the Multipurpose knob to select Frequency.

7. Push Ch2.

8. Turn the Multipurpose knob to select Cycle RMS.

9. Attach the probe tip and reference lead to the first test point. Read the

frequency and cycle RMS measurements from the oscilloscope display and compare these to the ideal values.

10. Repeat the preceding step for each test point, until you find the malfunctioning component.

NOTE. When Autorange is active, each time you move the probe to another test point, the oscilloscope readjusts the horizontal scale, the vertical scale, and the trigger level, to give you a useful display.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 33

Application examples

Taking cursor measurements

You can use the cursors to quickly take time and amplitude measurements on a waveform.

Measuring ring frequency

and amplitude

To measure the ring frequency at the rising edge of a signal, follow these steps:

1. Push the Cursor front-panel button to see the Cursor Menu.

2. Push the Type side-menu button. A pop-out menu should appear showing a

scroll-able list of the available cursor types.

3. Turn the Multipurpose knob to highlight Time.

4. Push the Multipurpose knob to select Time.

5. Push the Source side-menu button. A pop-out menu should appear showing a

scroll-able list of the available sources.

6. Turn the Multipurpose knob to highlight Ch1.

7. Push the Multipurpose knob to select Ch1.

8. Push the Cursor 1 option button.

9. Turn the Multipurpose knob to place a cursor on the first peak of the ring.

10. Push the Cursor 2 option button.

11. Turn the Multipurpose knob to place a cursor on the second peak of the ring.

You can see the Δ (delta) time and frequency (the measured ring frequency) in the Cursor Menu.

Type Time

Source Ch1

Δt 540.0ns 1/Δt

1.852MHz ΔV 0.44V

Cursor1 180ns

1.40V

Cursor2 720ns

0.96V

12. Push the Type side-menu button. A pop-out menu should appear showing a scroll-able list of the available cursor types.

13. Turn the Multipurpose knob to highlight Amplitude.

14. Push the Multipurpose knob to select Amplitude.

34 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

15. Push the Cursor 1 option button.

16. Turn the Multipurpose knob to place a cursor on the first peak of the ring.

17. Push the Cursor 2 option button.

18. Turn the Multipurpose knob to place Cursor 2 on the lowest part of the ring.

You can see the amplitude of the ring in the Cursor Menu.

Type

Amplitude

Source Ch1

ΔV 640mV

Cursor 1

1.46V

Measuring pulse width

Cursor 2 820mV

If you are analyzing a pulse waveform and you want to know the width of the pulse, follow these steps:

1. Push the Cursor button to see the Cursor Menu.

2. Push the Type side-menu button. A pop-out menu should appear showing a

scroll-able list of the available cursor types.

3. Turn the Multipurpose knob to highlight Time.

4. Push the Multipurpose knob to select Time.

5. Push the Cursor 1 option button.

6. Turn the Multipurpose knob to place a cursor on the rising edge of the pulse.

7. Push the Cursor 2 option button.

8. Turn the Multipurpose knob to place a cursor on the falling edge of the

pulse.

You can see the following measurements in the Cursor Menu:

■

The time at Cursor 1, relative to the trigger.

■

The time at Cursor 2, relative to the trigger.

■

The Δ (delta) time, which is the pulse width measurement.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 35

Application examples

Type

Time

SourceCh1

Δt 500.0µs 1/Δt 2.000kHz ΔV 1.38V

Cursor 1

0.00s

0.98V

Cursor 2 500µs

-1.00V

NOTE. The Positive Width measurement is available as an automatic measurement in the Measure Menu. See Measure on page 91.

Measuring rise time

After measuring the pulse width, you decide that you need to check the rise time of the pulse. Typically, you measure rise time between the 10% and 90% levels of the waveform. To measure the rise time, follow these steps:

1. Turn the Horizontal Scale (seconds/division) knob to display the rising edge of the waveform.

2. Turn the Vertical Scale (volts/division) and Vertical Position knobs to set the waveform amplitude to about five divisions.

3. Push the 1 (channel 1 menu) button.

4. Push Volts/Div ► Fine.

5. Turn the Vertical Scale (volts/division) knob to set the waveform amplitude

to exactly five divisions.

6. Turn the Vertical Position knob to center the waveform; position the baseline of the waveform 2.5 divisions below the center graticule.

7. Push the Cursor button to see the Cursor Menu.

8. Push the Type side-menu button. A pop-out menu should appear showing a

scroll-able list of the available cursor types.

9. Turn the Multipurpose knob to highlight Time.

10. Push the Multipurpose knob to select Time.

11. Push the Source side-menu button. A pop-out menu should appear showing a

scroll-able list of the available sources.

12. Turn the Multipurpose knob to highlight Ch1.

13. Push the Multipurpose knob to select Ch1.

36 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

14. Push the Cursor 1 option button.

15. Turn the Multipurpose knob to place a cursor at the point where the

waveform crosses the second graticule line below center screen. This is the 10% level of the waveform.

16. Push the Cursor 2 option button.

17. Turn the Multipurpose knob to place a cursor at the point where the

waveform crosses the second graticule line above center screen. This is the 90% level of the waveform.

The Δt readout in the Cursor Menu is the rise time of the waveform.

5 divisions

Type

Time

Source Ch1

Δt 140.0ns 1/Δt

7.143MHz ΔV 2.08V

Cursor 1

-80.0ns

-1.02V

Cursor 2

60.0ns

1.06V

NOTE. The Rise Time measurement is available as an automatic measurement in the Measure Menu. See Measure on page 91.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 37

Application examples

Analyzing signal detail

You have a noisy signal displayed on the oscilloscope and you need to know more about it. You suspect that the signal contains much more detail than you can now see in the display.

Looking at a noisy signal

The signal appears noisy and you suspect that noise is causing problems in your circuit. To better analyze the noise, follow these steps:

1. Push the Acquire button to see the Acquire Menu.

2. Push the Peak Detect option button.

Peak detect emphasizes noise spikes and glitches in your signal, especially when the time base is set to a slow setting.

38 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

Separating the signal from

noise

Now you want to analyze the signal shape and ignore the noise. To reduce random noise in the oscilloscope display, follow these steps:

1. Push the Acquire button to see the Acquire Menu.

2. Push the Average option button.

3. Turn the Multipurpose knob to highlight different numbers of averages from

the pop-up menu. As you push the knob to select a different number, you can see the effects of varying the number of running averages on the waveform display.

Averaging reduces random noise and makes it easier to see detail in a signal. In the example below, a ring shows on the rising and falling edges of the signal when the noise is removed.

Capturing a Single-Shot signal

The reliability of a reed relay in a piece of equipment has been poor and you need to investigate the problem. You suspect that the relay contacts arc when the relay opens. The fastest that you can open and close the relay is about once per minute, so you need to capture the voltage across the relay as a single-shot acquisition.

To set up for a single-shot acquisition, follow these steps:

1. Turn the Vertical Scale (volts/division) and Horizontal Scale (seconds/ division) knobs to the appropriate ranges for the signal you expect to see.

2. Push the Acquire button to see the Acquire Menu.

3. Push the Peak Detect option button.

4. Push the Trigger Menu button to see the Trigger Menu.

5. Push Slope.

6. Turn the Multipurpose knob to highlight Rising from the pop-out menu.

Push the knob to select the choice

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 39

Application examples

7. Turn the front-panel Level knob to adjust the trigger level to a voltage midway between the open and closed voltages of the relay.

8. Push the Single button to start the acquisition.

When the relay opens, the oscilloscope triggers and captures the event.

Optimizing the acquisition

The initial acquisition shows the relay contact beginning to open at the trigger point. This is followed by a large spike that indicates contact bounce and inductance in the circuit. The inductance can cause contact arcing and premature relay failure.

You can use the vertical, horizontal, and trigger controls to optimize the settings before the next single-shot event is captured. When the next acquisition is captured with the new settings (push the Single button again), you can see that the contact bounces several times as it opens.

40 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Measuring propagation delay

You suspect that the memory timing in a microprocessor circuit is marginal. Set up the oscilloscope to measure the propagation delay between the chip-select signal and the data output of the memory device.

Application examples

Type

Time

Source Ch1

Δt 20.00ns 1/Δt

50.00MHz ΔV 0.28V

Cursor 1

50.0ns

-0.20V

Cursor 2

70.0ns

0.08V

To set up to measure propagation delay, follow these steps:

1. Push the Autoset button to trigger a stable display.

2. Adjust the horizontal and vertical controls to optimize the display.

3. Push the Cursor button to see the Cursor Menu.

4. Push the Type side-menu button. A pop-out menu should appear showing a

scroll-able list of the available cursor types.

5. Turn the Multipurpose knob to highlight Time.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 41

Application examples

6. Push the Multipurpose knob to select Time.

7. Push the Source side-menu button. A pop-out menu should appear showing a

scroll-able list of the available sources.

8. Turn the Multipurpose knob to highlight Ch1.

9. Push the Multipurpose knob to select Ch1.

10. Push the Cursor 1 option button.

11. Push the Cursor 1 option button.

12. Turn the Multipurpose knob to place a cursor on the active edge of the chip-

select signal.

13. Push the Cursor 2 option button.

14. Turn the Multipurpose knob to place the second cursor on the data output

transition.

The Δt readout in the Cursor Menu is the propagation delay between the waveforms. The readout is valid because the two waveforms have the same horizontal scale (seconds/division) setting.

Triggering on a specific pulse width

To set up a test for pulse width aberrations, follow these steps:

1. Push the Autoset button to trigger a stable display.

Push the single cycle option button in the Autoset Menu to view a single cycle of the signal, and to quickly take a Pulse Width measurement.

3. Push the Trigger Menu button to see the Trigger Menu.

4. Push Type.

5. Turn the Multipurpose knob to highlight Pulse from the pop-out menu. Push

the knob to select the choice

6. Push Source.

42 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

7. Turn the Multipurpose knob to highlight Ch1 from the pop-out menu. Push the knob to select the choice

8. Turn the trigger Level knob to set the trigger level near the bottom of the signal.

9. Push When ► = (equals).

10. Push Pulse Width.

11. Turn the Multipurpose knob to set the pulse width to the value reported by

the Pulse Width measurement in step 2.

12. Push More ► Mode ► Normal.

You can achieve a stable display with the oscilloscope triggering on normal pulses.

1. Push the When option button to select ≠, <, or >. If there are any aberrant pulses that meet the specified When condition, the oscilloscope triggers.

NOTE. The trigger frequency readout shows the frequency of events that the oscilloscope might consider to be a trigger, and may be less than the frequency of the input signal in Pulse Width trigger mode.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 43

Application examples

Triggering on a video signal

You are testing the video circuit in a piece of medical equipment and need to display the video output signal. The video output is an NTSC standard signal. Use the video trigger to obtain a stable display.

NOTE. Most video systems use 75 ohm cabling. The oscilloscope inputs do not properly terminate low impedance cabling. To avoid amplitude inaccuracy from improper loading and reflections, place a 75 ohm feedthrough terminator (Tektronix part number 011-0055-02 or equivalent) between the 75 ohm coaxial cable from the signal source and the oscilloscope BNC input.

44 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

Triggering on video fields

Automatic. To trigger on the video fields, follow these steps:

1. Push the Autoset button. When Autoset is complete, the oscilloscope

displays the video signal with sync on All Fields.

The oscilloscope sets the Standard option when you use the Autoset function.

2. Push the Odd Field or Even Field option buttons from the Autoset Menu to sync on odd or even fields only.

Manual. An alternative method requires more steps, but may be necessary depending on the video signal. To use the manual method, follow these steps:

1. Push the 1 (channel 1 menu) button.

2. Push Coupling ► AC.

3. Push the Trigger Menu button to see the Trigger Menu.

4. Push the top option button and select Video.

5. Push Source ► Ch1.

6. Push the Sync option button and select All Fields, Odd Field, or Even Field.

7. On page 2 of the side menu, push Standard ► NTSC.

8. Turn the Horizontal Scale (seconds/division) knob to see a complete field

across the screen.

Triggering on video lines

9. Turn the Vertical Scale (volts/division) knob to ensure that the entire video signal is visible on the screen.

Automatic. You can also look at the video lines in the field. To trigger on the video lines, follow these steps:

1. Push the Autoset button.

2. Push the top option button to select Line to sync on all lines. (The Autoset Menu includes All Lines and Line Number options.)

Manual. An alternative method requires more steps, but may be necessary

depending on the video signal. To use this method, follow these steps:

1. Push the Trigger Menu button to see the Trigger Menu.

2. Push the top option button and select Video.

3. Push the Sync option button and select All Lines or Line Number and turn the Multipurpose knob to set a specific line number.

4. Push Standard ► NTSC.

5. Turn the Horizontal Scale (seconds/division) knob to see a complete video

line across the screen.

6. Turn the Vertical Scale (volts/division) knob to ensure that the entire video signal is visible on the screen.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 45

Application examples

Incoming video signal

Using the zoom function

to see waveform details

You can use the zoom function to examine a specific portion of a waveform without changing the main display.

If you want to view the color burst in the previous waveform in more detail without changing the main display, follow these steps:

1. Push the Zoom front-panel button.

When pressing the Zoom button, the waveform display area will show original waveform (about ¼) and zoom in waveform (about ¾). And the menu area will keep the original menu. If both channels are turned on at the same time, there will be two zoom in waveforms at the top window.

2. Push the Scale side-menu button and turn the Multipurpose knob to change the zoom scale.

3. Push the Position side-menu button and turn the Multipurpose knob to change the zoom position.

4. Turn the horizontal Scale (seconds/division) knob and select 500 ns. This will be the seconds/division setting of the expanded view.

5. Turn the Horizontal Position knob to position the zoom window around the portion of the waveform that you want to expand.

46 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Analyzing a differential communication signal

You are having intermittent problems with a serial data communication link, and you suspect poor signal quality. Set up the oscilloscope to show you a snapshot of the serial data stream so you can verify the signal levels and transition times.

Because this is a differential signal, you use the Math function of the oscilloscope to view a better representation of the waveform.

Application examples

NOTE. Be sure to first compensate both probes. Differences in probe compensation appear as errors in the differential signal.

To activate the differential signals connected to channel 1 and to channel 2, follow these steps:

1. Push the 1 (channel 1 menu) button and set the Probe ► Voltage ► Attenuation option to 10X.

2. Push the 2 (channel 2 menu) button and set the Probe ► Voltage ► Attenuation option to 10X.

3. If using P2220 probes, set their switches to 10X.

4. Push the Autoset button.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 47

Application examples

5. Push the Math button to see the Math Menu.

6. Push the Operation option button and select -.

7. Push the Sources Ch1-Ch2 option button to display a new waveform that is

the difference between the displayed waveforms.

8. To adjust the vertical scale and position of the Math waveform, follow these steps:

a. Remove the channel 1 and channel 2 waveforms from the display.

b. Turn the channel 1 and channel 2 Vertical Scale and Vertical Position

knobs to adjust the vertical scale and position of the Math waveform.

For a more stable display, push the Single button to control the acquisition of the waveform. Each time you push the Single button, the oscilloscope acquires a snapshot of the digital data stream. You can use the cursors or automatic measurements to analyze the waveform, or you can store the waveform to analyze later.

Viewing impedance changes in a network

You have designed a circuit that needs to operate over a wide temperature range. You need to evaluate the change in impedance of the circuit as the ambient temperature is changed.

Connect the oscilloscope to monitor the input and output of the circuit and capture the changes that occur as you vary the temperature.

48 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Application examples

To view the input and output of the circuit in an XY display, follow these steps:

1. Push the 1 (channel 1 menu) button.

2. Push Probe ► Voltage ►Attenuation ► 10X.

3. Push the 2 (channel 2 menu) button.

4. Push Probe ► Voltage ► Attenuation ► 10X.

5. If using P2220 probes, set their switches to 10X.

6. Connect the channel 1 probe to the input of the network, and connect the

channel 2 probe to the output.

7. Push the Autoset button.

8. Turn the Vertical Scale (volts/division) knobs to display approximately the

same amplitude signals on each channel.

9. Push the Utility ► Display button to see the Display Menu.

10. Push Format ► XY.

The oscilloscope displays a Lissajous pattern representing the input and output characteristics of the circuit.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 49

Application examples

11. Turn the Vertical Scale and Vertical Position knobs to optimize the display.

12. Push Persist ► Infinite.

As you adjust the ambient temperature, the display persistence captures the changes in the characteristics of the circuit.

Data logging (non-EDU models only)

You can use the oscilloscope to record data from a source over time. You can configure the trigger conditions and direct the oscilloscope to save all the triggered waveform together with timing information over a defined time duration to a USB memory device.

The USB host port on the front panel supports data logging. You can set up the oscilloscope to save user- specified triggered waveforms to a USB device for up to 24 hours. You can also select the "Infinite" option for continuous waveform monitoring. In the infinite mode you can save your triggered waveforms to an external USB memory device without a duration limitation until the memory device is full. The oscilloscope will then guide you to insert another USB memory device to continue saving waveforms.

1. Configure the oscilloscope to use the desired trigger conditions to collect the data. Also, insert a USB memory device in the front-panel USB port.

2. Push the front-panel Function button.

3. Select Data Logging from the resulting side menu to bring up the data

logging menu.

4. Push the Source button to select the signal source to log data from. You can use either one of the input channels or the Math waveform.

5. Push the Duration button and turn and push the Multipurpose knob to select the duration for data logging. The selections range from 0.5 hour to 8 hours in 30 minute increments and from 8 hours to 24 hours in 60 minute increments. You can select Infinite to run data logging with no set time limit.

6. Push the Select Folder button to define where to store the collected information. The resulting menu choices will let you either select an existing folder or define a new folder. When done, push Back to return to the main data logging menu

7. Start the data acquisition, such as by pushing either the front-panel Single or Run/Stop button.

8. Push Data Logging from the side menu to select On. This enables the data

logging feature. Before turning on the data logging feature, you must first select the source, the time duration, and the folder, as defined in the steps above.

9. When the oscilloscope finishes the requested data logging operation, it displays a “Data logging completed” message and turns off the data logging feature.

50 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Limit testing (non-EDU models only)

You can use the oscilloscope to monitor an active input signal against a template and to output pass or fail results by judging whether the input signal is within the bounds of the template.

Use the limit test if you need a Pass/Fail test to determine if a signal is good. Set up the oscilloscope to automatically monitor a source signals and output Pass or Fail results by evaluating whether or not the acquired waveform falls within predefined boundaries. The limit test feature allows you to create templates based on one or two independent reference waveforms. If a failure is detected, a series of specific actions can be triggered.

1. Push the front-panel Function button.

2. Select Limit Test from the resulting side menu to bring up the limit testing

menu.

3. Select Source from the side menu to define the source of the waveform to compare against the limit test template.

4. Select Compare To to specify the limit test template against which to compare test signals sectioned with the Source menu item.

Application examples

5. Push Template Setup from the side menu to define the boundary to compare with the input source signals.

If you pushed Template Setup, you can create the template with specific horizontal and vertical tolerances. You can create them from channel 1, channel 2, or the Math waveform. On page 2 of the resulting menu you can push Display Template and toggle between On and Off to display or not a stored template. Push Back from page 2 to return to the top level of the limit test menu.

6. Push - more - page 1 of 2 to see the Action on Violation side-menu button. Select it and then select an action from the resulting side menu to describe what the oscilloscope will do after it detects a violation. You can select between Save Waveform and Save Image. Push Back to return to the top level of the limit test menu.

7. Push the Stop After button from page 2 of the top level of the limit test menu. Push the button with the same name on the resulting side menu. On the resulting pop-out menu, turn and push the Multipurpose knob to define the conditions that will stop limit testing. If you select Waveforms,

Violations, or Time, push the resulting side menu items and turn the Multipurpose knob to set the desired number of waveforms, number of

violations, or the time in seconds at which to stop. You can also choose

Manual to stop the testing manually.

8. Push the Run/Stop Test side-menu button from page 1 of the top level of the

limit test menu to toggle between starting and ending the limit test. After the test ends, the oscilloscope will display the test statistics on the lower-level corner of the screen. This includes the total number of cases tested, the number of cases passed, and the number of cases failed.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 51

Application examples

52 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

FFT

FFT converts a time-domain (YT) signal into its frequency components (spectrum). The oscilloscope can optionally display the source waveform at the same time as the FFT waveform. Use FFT for the following types of analysis:

■

Analyze harmonics in power lines

■

Measure harmonic content and distortion in systems

■

Characterize noise in DC power supplies

■

Test impulse response of filters and systems

■

Analyze vibration

To use FFT, you need to perform the following tasks:

■

Set up the source (time-domain) waveform

■

Display the FFT spectrum

■

Select a type of FFT window

■

Adjust the sample rate to display the fundamental frequency and harmonics without aliasing

■

Use cursors to measure the spectrum

Setting up the Time-Domain waveform

Before you use FFT, you need to set up the time-domain (YT) waveform. To do so, follow these steps:

1. Push Autoset to display a YT waveform.

2. Turn the Vertical Position knob to move the YT waveform to the center

vertically (zero divisions).

This ensures that the FFT will show a true DC value.

3. Turn the Horizontal Position knob to position the part of the YT waveform that you want to analyze in the center eight divisions of the screen.

The oscilloscope calculates the FFT spectrum using the center 2048 points of the time-domain waveform.

1. Turn the Vertical Scale (volts/division) knob to ensure that the entire waveform remains on the screen. The oscilloscope may display erroneous FFT results (by adding high frequency components) if the entire waveform is not visible.

2. Turn the Horizontal Scale (seconds/division) knob to provide the resolution you want in the FFT spectrum.

3. If possible, set the oscilloscope to display many signal cycles.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 53

FFT

If you turn the Horizontal Scale knob to select a faster setting (fewer cycles), the FFT spectrum shows a larger frequency range, and reduces the possibility of FFT aliasing. See FFT aliasing on page 58. However, the oscilloscope also displays less frequency resolution.

To set up the FFT display, follow these steps:

1. Push the FFT front-panel button to see the FFT side menu.

2. Push Source from the side menu.

3. Turn the Multipurpose knob to highlight the source channel. Push the knob

to select the channel.

NOTE. Trigger and position any transient or burst waveforms as closely as possible to the center of the screen.

Nyquist frequency

The highest frequency that any real-time digitizing oscilloscope can measure without errors is one-half the sample rate. This frequency is called the Nyquist frequency. Frequency information above the Nyquist frequency is undersampled, which causes FFT aliasing. See FFT aliasing on page 58.

The math function transforms the center 2048 points of the time-domain waveform into an FFT spectrum. The resulting FFT spectrum contains 1024 points that go from DC (0 Hz) to the Nyquist frequency.

Normally, the display compresses the FFT spectrum horizontally into 250 points, but you can use the FFT Zoom function to expand the FFT spectrum to more clearly see the frequency components at each of the 1024 data points in the FFT spectrum.

NOTE. The oscilloscope vertical response rolls off slowly above its bandwidth (30 MHz

, 50 MHz, 70 MHz, 100 MHz, 150 MHz or 200 MHz, depending on the model, or 20 MHz when the Bandwidth Limit option is ON). Therefore, the FFT spectrum can show valid frequency information higher than the oscilloscope bandwidth. However, the magnitude information near or above the bandwidth will not be accurate.

Available only in North America and Europe.

54 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Displaying the FFT spectrum

Push the FFT button to display the FFT side menu. Use the options to select the Source channel, Window algorithm, and FFT Zoom factor. You can display only one FFT spectrum at a time.

FFT option Settings Comments

Source On/Off On, Off Selects whether the screen displays the source waveform at the

same time as it displays the FFT waveform

Source Ch1, Ch2 Selects the channel used as the FFT source

Window Hanning, Flattop, Rectangular Selects the FFT window type; See Selecting an FFT window on

page 56.

FFT Zoom X1, X2, X5, X10 Changes the horizontal magnification of the FFT display; See

Magnifying and positioning an FFT spectrum on page 59.

FFT

1. Frequency at the center graticule line.

2. Vertical scale in dB per division (0 dB = 1 V

RMS

3. Horizontal scale in frequency per division.

4. Sample rate in number of samples per second.

5. FFT window type.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 55

FFT

Selecting an FFT window

Windows reduce spectral leakage in the FFT spectrum. The FFT assumes that the YT waveform repeats forever. With an integral number of cycles (1, 2, 3, ...), the YT waveform starts and ends at the same amplitude and there are no discontinuities in the signal shape.

A non-integral number of cycles in the YT waveform causes the signal start and end points to be at different amplitudes. The transitions between the start and end points cause discontinuities in the signal that introduce high-frequency transients.

Applying a window to the YT waveform changes the waveform so that the start and stop values are close to each other, reducing the discontinuities.

56 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

FFT

The FFT function includes three FFT Window options. There is a trade-off between frequency resolution and amplitude accuracy with each type of window. What you want to measure and your source signal characteristics will help you to determine which window to use.

Window Measure Characteristics

Hanning Periodic waveforms Better frequency, poorer magnitude accuracy

than Flattop

Flattop Periodic waveforms Better magnitude, poorer frequency accuracy

than Hanning

Rectangular Pulses or transients Special-purpose window for waveforms that do

not have discontinuities. This is essentially the same as no window

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 57

FFT

FFT aliasing

Problems occur when the oscilloscope acquires a time-domain waveform containing frequency components that are greater than the Nyquist frequency. See Nyquist frequency on page 54. The frequency components that are above the Nyquist frequency are undersampled, appearing as lower frequency components that "fold back" around the Nyquist frequency. These incorrect components are called aliases.

Eliminating aliases

To eliminate aliases, try the following remedies:

■

Turn the Horizontal Scale (seconds/division) knob to set the sample rate to a faster setting. Since you increase the Nyquist frequency as you increase the sample rate, the aliased frequency components appear at their proper frequency. If too many frequency components are shown on the screen, you can use the FFT Zoom option to magnify the FFT spectrum.

■

If you do not need to view frequency components above 20 MHz, set the Bandwidth Limit option to On.

■

Put an external filter on the source signal to bandwidth limit the source waveform to frequencies below that of the Nyquist frequency.

■

Recognize and ignore the aliased frequencies.

■

Use zoom controls and the cursors to magnify and measure the FFT spectrum.

58 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Magnifying and positioning an FFT spectrum

You can magnify and use cursors to take measurements on the FFT spectrum. The oscilloscope includes an FFT Zoom option to magnify horizontally. To magnify vertically, you can use the vertical controls.

FFT

Horizontal zoom and

position

Vertical zoom and position

The FFT Zoom option lets you horizontally magnify the FFT spectrum without changing the sample rate. Zoom factors are X1 (default), X2, X5, and X10. At zoom factor X1, and with the waveform centered in the graticule, the left graticule line is at 0 Hz and the right graticule line is at the Nyquist frequency.

When you change the zoom factor, the FFT spectrum is magnified about the center graticule line. In other words, the axis of horizontal magnification is the center graticule line.

Turn the Horizontal Position knob clockwise to move the FFT spectrum to the right. Push the knob to position the center of the spectrum at the center of the graticule.

The channel vertical knobs become vertical zoom and position controls for their respective channels when displaying the FFT spectrum.

Turn the Vertical Position knob clockwise to move the spectrum up for the source channel.

Measuring an FFT spectrum using cursors

You can take two measurements on FFT spectrums: magnitude (in dB), and frequency (in Hz). Magnitude is referenced to 0 dB, where 0 dB equals 1 V

You can use the cursors to take measurements at any zoom factor. To do so, follow these steps:

1. Push the Cursor button to see the cursor side menu.

2. Push Source ► FFT.

3. Push the Type option button and use the Multipurpose knob to select Magnitude or Frequency.

4. Select Cursor 1 or Cursor 2.

5. Use the Multipurpose knob to move the selected cursor.

Use horizontal cursors to measure magnitude and vertical cursors to measure frequency. The options display the delta between the two cursors, the value at cursor 1 position, and the value at cursor 2 position. Delta is the absolute value of cursor 1 minus cursor 2.

RMS

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 59

FFT

Magnitude cursors Frequency cursors

You can also take a frequency measurement without using the cursors. To do so, turn the Horizontal Position knob to position a frequency component on the center graticule line and read the frequency at the top right of the display.

60 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

USB flash drive and device ports

This chapter describes how to use the Universal Serial Bus (USB) ports on the oscilloscope to do the following tasks:

■

Save and recall waveform data or setup data, or save a screen image

■

Transfer waveform data, setup data, or a screen image to a PC

■

Control the oscilloscope with remote commands

To use the PC Communications software, launch and refer to the online help from the software.

USB flash drive port

The front of the oscilloscope has a USB Flash Drive port to accommodate a USB flash drive for file storage. The oscilloscope can save data to and retrieve data from the flash drive.

USB Flash Drive port

NOTE. The oscilloscope can only support flash drives with a storage capacity of 64 GB or less.

To connect a USB flash drive, follow these steps:

1. Align the USB flash drive with the USB Flash Drive port on the oscilloscope. Flash drives are shaped for proper installation.

2. Insert the flash drive into the port until the drive is fully inserted.

For flash drives with an LED, the drive "blinks" while the oscilloscope writes data to or reads data from the drive. The oscilloscope also displays a clock symbol to indicate when the flash drive is active.

After a file is saved or retrieved, the LED on the drive (if any) stops blinking, and the oscilloscope removes the clock. A hint line also displays to notify you that the save or recall operation is complete.

To remove a USB flash drive, wait until the LED on the drive (if any) stops blinking or until the hint line appears that says the operation is complete, grab the edge of the drive, and extract the drive from the port.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 61

USB flash drive and device ports

Flash drive initial read

time

Formatting a flash drive

Flash drive capacities

The oscilloscope reads the internal structure of a USB flash drive each time you install a drive. The time to complete the read depends on the size of the flash drive, how the drive is formatted, and the number of files stored on the drive.

NOTE. To significantly shorten the initial read time of 64 MB and larger USB flash drives, format the drive on your PC.

The Format function deletes all data on the USB flash drive. To format a flash drive, follow these steps:

1. Insert a USB flash drive into the Flash Drive port on the front of the oscilloscope.

2. Push the Utility button to see the Utility Menu.

3. Push File Utilities ► More ► Format.

4. Select Yes to format the flash drive.

The oscilloscope can store the following types and number of files per 1 MB of USB flash drive memory:

■

5 Save All operations; See Saves all to files on page 65 and Save all on page 97.

■

16 screen image files (capacity depends on the image format); See Saves

image to file on page 67 and Save image on page 97.

■

250 oscilloscope setting (.SET) files; See Save setup on page 98.

■

18 waveform (.CSV) files; See Save waveform on page 98.

62 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

USB flash drive and device ports

File management conventions

The oscilloscope uses the following file management conventions for data storage:

■

The oscilloscope checks for available space on the USB flash drive before writing files, and displays a warning message if there is not enough memory available.

■

The term “folder” refers to a directory location on the USB flash drive.

■

The default location for the file save or file recall functions is the current folder.

■

/usb0/ is the root folder.

■

The oscilloscope resets the current folder to /usb0/ when you power on the oscilloscope, or when you insert a USB flash drive after the oscilloscope is powered on.

■

File names can have one to eight characters, followed by a period, and then followed with an extension of one to three characters.

■

The oscilloscope displays long file names created on PC operating systems with the shortened file name from the operating system.

■

File names are case insensitive and are displayed in upper case.

You can use the File Utilities menu to do the following tasks:

■

List the contents of the current folder

■

Select a file or folder

■

Navigate to other folders

■

Create, rename, and delete files and folders

■

Format the USB flash drive

See File utilities for the USB flash drive on page 110.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 63

USB flash drive and device ports

Saving and recalling files with a USB flash drive

There are two ways to operate the USB flash drive for file storage:

■

through the Save/Recall menu

■

through the alternative Save function of the front-panel Save button

You can use the following Save/Recall menu options to write data to or retrieve data from a USB flash drive:

■

Save Image

■

Save Setup

■

Save Waveform

■

Recall Setup

■

Recall Waveform

NOTE. The front-panel Save button can be used as a save button for quick storage of files to a flash drive. For information on how to save many files at once, or images one after another, refer to Using the Save Functions of the Front-Panel Save button. See Using the save function of the Front-Panel save

button on page 65.

Save image save setup

and save waveform

options

You can save a screen image, the oscilloscope settings, or waveform data to a file on the USB flash drive through the Save/Recall menu.

Each save option operates in a similar way. As an example, to save a screen image file to a flash drive, follow these steps:

1. Insert a USB flash drive into the USB Flash Drive port.

2. Push Utility ► Options ► Printer Setup and set the following options:

Option Settings Description

Ink Saver On, Off Saves the screen image on a white

background when you select On

Layout Portrait, Landscape Orients the screen shot

3. Access the screen you want to save.

4. Push the Save/Recall front-panel button.

5. Select the Action ► Save Image ► Save option.

The oscilloscope saves the screen image in the current folder and automatically generates the file name. See Save-Recall on page 96.

64 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

USB flash drive and device ports

Recall setup and recall

waveform options

You can recall the oscilloscope settings or waveform data from a file on the USB flash drive through the Save/Recall menu.

Each recall option operates in a similar way. As an example, to recall a waveform file from a USB flash drive, follow these steps:

1. Insert the USB flash drive that contains the desired waveform file into the USB Flash Drive port on the front of the oscilloscope.

2. Push the Save/Recall front panel button.

3. Select the Action ► Recall Waveform ► Select File option.

You can use the Change Folder option to navigate to another folder on the flash drive.

4. Turn the Multipurpose knob to select the waveform file to recall.

The name of the file in the Recall option changes as you scroll.

5. Select the To option and specify which reference memory location to recall the waveform to (RefA or RefB).

6. Push the Recall FnnnnCHx.CSV option button, where FnnnnCHx.CSV is the name of the waveform file.

NOTE. For folders on the flash drive that contain one waveform file, select the

Save/Recall ► Action ►Recall Waveform ► To option and specify the reference memory location to recall the waveform to. The name of the file appears in the Recall option. See Save-Recall on page 96.

Using the save function of the Front-Panel save button

You can set the front-panel save button to write data to the USB flash drive as an alternative function. To set the function of the button to save data, access the following options:

■

Save/Recall ► Action - Save All

■

Utility ► - more - page 1 of 2 ►Options ► Printer Setup

Saves all to files

The Saves All to Files option lets you save the current oscilloscope information to files on the USB flash drive. A single Saves All to Files action uses less than 700 kB of space on the flash drive.

Before you can save data to the USB flash drive, you need to change the front-

panel Save button to the alternative Save function. To do so, select the Save/ Recall ► Save All ► Print Button ► Saves All to Files option.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 65

USB flash drive and device ports

To save all the oscilloscope files to a USB flash drive, follow these steps:

1. Insert a USB flash drive into the USB Flash Drive port.

2. To change the folder designated as the current folder, push the Select Folder

option button.

The oscilloscope creates a new folder within the current folder each time you push the front panel Save button, and automatically generates the folder name.

3. Set up the oscilloscope to capture your data.

Push the Save button.

The oscilloscope creates a new folder on the flash drive and saves the screen image, waveform data, and setup data in separate files in that new folder, using the current oscilloscope and file format settings. The oscilloscope names the folder ALLnnnn. See Save-Recall on page 96.

To see a list of the files created by the Saves All To Files function, access the Utility ►File Utilities menu.

Source File name

Ch(x) FnnnnCHx.CSV, where nnnn is an automatically-generated number, and

x is the channel number

Math FnnnnMTH.CSV

Ref(x) FnnnnRFx.CSV, where x is the reference memory letter

Screen Image FnnnnTEK.???, where ??? is the current file format

Settings FnnnnTEK.SET

File type Contents and uses

.CSV Contains ASCII text strings that list the time

(relative to the trigger) and amplitude values for each of the 2500 waveform data points; you can import .CSV files into many spreadsheet and math analysis applications.

.SET Contains an ASCII text string listing of the

oscilloscope settings; refer to the TBS1000B,

TDS2000C and TPS2000 Series Digital Oscilloscopes Programmer Manual to decode

strings.

Screen images Import files into spreadsheet and word

processing applications; type of image file depends on the application.

NOTE. The oscilloscope stores these settings until you change them, even if you push the Default Setup button.

66 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

USB flash drive and device ports

Saves image to file

This option lets you save the oscilloscope screen image to a file named TEKnnnn.???, where the .??? is the current Saves Image to File format. The next table lists the file formats.

File format Extension Comments

BMP BMP This bitmap format uses a lossless algorithm,

and is compatible with most word processing and spreadsheet programs; this is the default.

JPEG JPG This bitmap format uses a lossy compression

algorithm, and is commonly used by digital cameras and by other digital photographic applications.

Before you can save data to the USB flash drive, you must change the Save button to the alternative Save function. To do so, select the Save/Recall ► Save All ► Print Button ► Saves Image to File option.

To save a screen image to a USB flash drive, follow these steps:

1. Insert a USB flash drive into the USB Flash Drive port.

2. To change the folder designated as the current folder, push the Select Folder

option button.

3. Access the screen you want to save.

Push the front-panel Save button.

The oscilloscope saves the screen image and automatically generates the file name.

To see a list of the files created by the Save Image To File function, you can access the Utility ► File Utilities menu.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 67

USB flash drive and device ports

USB device port

You can use a USB cable to connect the oscilloscope to a PC. The USB Device port is on the rear of the oscilloscope.

USB Device port

Installing the PC communications software on a PC

Before you connect the oscilloscope to a PC with Tektronix OpenChoice PC Communications Software, you must download that software from www.tektronix.com/software and install it on your PC.

CAUTION.

software, the PC will not recognize the oscilloscope. The PC will label the oscilloscope as an Unknown Device and not communicate with the oscilloscope. To avoid this, install the software on your PC before you connect the oscilloscope to your PC.

NOTE.

software.

Software for your oscilloscope is available through the Software finder on the Tektronix web site.

To install the PC Communications software, follow these steps:

1. Run the OpenChoice Desktop software on the PC. The InstallShield wizard

If you connect the oscilloscope to your PC before you install the

Be sure you have installed the latest version of PC Communications

appears on the screen.

2. Follow the on-screen directions.

3. Exit the InstallShield wizard.

68 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

USB flash drive and device ports

Connecting to a PC

After you install the software on your PC, you can connect the oscilloscope to the PC.

NOTE. You must install the software before you connect the oscilloscope to the PC. See Installing the PC communications software on a PC on page 68.

To connect the oscilloscope to the PC, follow these steps:

1. Power on the oscilloscope.

2. Insert one end of a USB cable into the USB Device port on the back of the

oscilloscope.

3. Power on the PC.

4. Insert the other end of the cable into the desired USB port on a PC.

5. If a Found New Hardware message appears, follow the on-screen directions

for the Found New Hardware wizard.

Do NOT search for the hardware to install on the web.

6. For a Windows XP systems, follow these steps:

a. When prompted, select the option that tells Windows NOT to connect to

Windows Update, and click Next.

b. In the next window, you should see that you are installing software for a

USB Test and Measurement Device. If you do not see USB Test and Measurement Device software, the OpenChoice Desktop software is not properly installed.

c. Select the option that installs the software automatically (the

recommended option) and click Next.

Windows will install the driver for your oscilloscope.

d. If you do not see the USB Test and Measurement Device in step c, or if

Windows cannot find the software driver, the OpenChoice Desktop software is not properly installed.

In these situations, click Cancel to exit the Found New Hardware wizard. Do NOT allow the wizard to finish.

Unplug the USB cable from your oscilloscope and install the OpenChoice Desktop software.

Reconnect your oscilloscope to the PC and follow steps 6a, 6b, 6c, and 6d.

e. Click Finish.

f. If a dialog labeled Test and Measurement Device appears, select what

you would like Windows to do, and click OK.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 69

USB flash drive and device ports

7. For Windows 2000 systems:

a. When prompted, select the option that tells Windows to display a list of

known drivers and click Next.

b. In the next window, select USB Test and Measurement Device. If you do

not see a USB Test and Measurement Device selection, the OpenChoice Desktop software is not properly installed.

c. In the next window, click Next to allow Windows to install the driver for

your oscilloscope.

Windows will install the driver for your oscilloscope.

d. If you do not see the USB Test and Measurement Device in step b, or if

Windows cannot find the software driver, the software is not properly installed.

In these situations, click Cancel to exit the Found New Hardware wizard. Do NOT allow the wizard to finish.

Unplug the USB cable from your oscilloscope, and install the software.

8. When prompted, click Finish.

9. If Windows asks you to insert a CD, click Cancel.

10. Run the PC Communications software on your PC.

11. If the oscilloscope and PC do not communicate, refer to the PC

Communications online help and documentation.

Connecting to a GPIB system

If you want to communicate between the oscilloscope and a GPIB system, use a TEK-USB-488 adapter and follow these steps:

1. Connect the oscilloscope to a TEK-USB-488 adapter with a USB cable.

The Accessories appendix has information on how to order an adapter. See

Accessories and options on page 133.

2. Connect the TEK-USB-488 adapter to your GPIB system with a GPIB cable.

3. Push the Utility ► Options ► GPIB Setup ► Address option button to

select the appropriate address for the adapter, or use the multipurpose knob. The default GPIB address is 1.

Reconnect your oscilloscope to the PC and follow steps 7a, 7b, and 7c.

4. Run your GPIB software on your GPIB system.

5. If the oscilloscope and your GPIB system do not communicate, refer to the

information on the software for your GPIB system, and to the user manual for the TEK-USB-488 adapter to resolve the problem.

70 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

USB flash drive and device ports

Command entry

NOTE. For command information, refer to the TBS1000B, TDS2000C and TPS2000 Series Digital Oscilloscopes Programmer Manual, 077-0444-XX. You can download manuals at www.tektronix.com/manuals.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 71

USB flash drive and device ports

72 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Reference

Acquire

This chapter describes the menus and operating details associated with each front-panel menu button or control.

Push the Acquire button to set acquisition parameters.

Options Settings Comments

Sample Use to acquire and accurately display most

waveforms; this is the default mode

Peak Detect Use to detect glitches and reduce the possibility

of aliasing

Average Use to reduce random or uncorrelated noise in

the signal display; the number of averages is selectable

Averages 4, 16, 64, 128 Select number of averages

Key points

If you probe a noisy square wave signal that contains intermittent, narrow glitches, the waveform displayed will vary depending on the acquisition mode you choose.

Sample Peak Detect Average

Sample. Use Sample acquisition mode to acquire 2500 points and display them at the horizontal scale (seconds/division) setting. Sample mode is the default mode.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 73

Reference

Sample acquisition intervals (2500)

• = Sample points

Sample mode acquires a single sample point in each interval.

The oscilloscope samples at the following rates:

■

Maximum of 2 GS/s for 100 MHz, 150, and 200 MHz models

■

Maximum of 1 GS/s for 50 MHz and 70 MHz models

■

Maximum of 500 MS/s for 30 MHz

model

At 100 ns and faster settings, this sample rate does not acquire 2500 points. In this case, a Digital Signal Processor interpolates points between the sampled points to make a 2500 point waveform record.

Peak Detect. Use Peak Detect acquisition mode to detect glitches as narrow as 10 ns and to limit the possibility of aliasing. This mode is effective when at the horizontal scale setting of 5 ms/division or slower.

Peak Detect acquisition intervals (1250)

• = Sample points displayed

Peak Detect mode displays the highest and lowest acquired voltage in each interval.

NOTE. If you set the horizontal scale (seconds/division) setting to 2.5 ms/div or faster, the acquisition mode changes to Sample because the sample rate is fast enough that Peak Detect is not necessary. The oscilloscope does not display a message to tell you that the mode was changed to Sample.

Available only in North America and Europe.

74 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Reference

When there is enough waveform noise, a typical peak detect display shows large black areas. The oscilloscope displays this area with diagonal lines to improve display performance.

Typical peak detect display

TBS1000B peak detect display

Average. Use Average acquisition mode to reduce random or uncorrelated noise in the signal you want to display. Data is acquired in sample mode, then a number of waveforms are averaged together.

Select the number of acquisitions (4, 16, 64, or 128) to average for the waveform.

Run/Stop Button. Push the Run/Stop button when you want the oscilloscope to continuously acquire waveforms. Push the button again to stop the acquisition.

Single Button. Push the Single (single sequence) button when you want the oscilloscope to acquire a single waveform and then stop. Each time you push the Single button, the oscilloscope begins to acquire another waveform. After the oscilloscope detects a trigger it completes the acquisition and stops.

Acquisition mode Single button

Sample, Peak Detect Sequence is complete when one acquisition is acquired

Average Sequence is complete when the defined number of acquisitions is

reached; See Acquire on page 73.

Scan Mode Display. You can use the Horizontal Scan acquisition mode (also called Roll mode) to continuously monitor signals that change slowly. The oscilloscope displays waveform updates from the left to the right of the screen and erases old points as it displays new points. A moving, one-division-wide blank section of the screen separates the new waveform points from the old.

The oscilloscope changes to the Scan acquisition mode when you turn the Horizontal Scale knob to 100 ms/div or slower, and select the Auto Mode option in the Trigger Menu.

To disable Scan mode, push the Trigger Menu button and set the Mode option to Normal.

Stopping the Acquisition. While the acquisition is running, the waveform display is live. Stopping the acquisition (when you push the Run/Stop button) freezes the display. In either mode, the waveform display can be scaled or positioned with the vertical and horizontal controls.

TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 75

Reference

Autorange

When you hold the Autoset button for more than 1.5 seconds, the oscilloscope activates or deactivates the Autorange function.

This function automatically adjusts setup values to track a signal. If the signal changes, the setup continues to track the signal. When you power on the oscilloscope, autoranging is always inactive.

Options Comment

Autoranging Activates or deactivates the Autorange function

Vertical and Horizontal Tracks and adjusts both axes

Vertical Only Tracks and adjusts the Vertical scale; does not change the horizontal

settings

Horizontal Only Tracks and adjusts the Horizontal scale; does not change the vertical

settings

Undo Autoranging Causes the oscilloscope to recall the previous setup

The following conditions cause autorange to adjust settings:

■

Too many or too few waveform periods for a clear display of the trigger source (except when in Vertical Only)

■

Waveform amplitude too large or too small (except when in Horizontal Only)

■

Ideal trigger level changes

When you push the Autoset button for more than 1.5 seconds, the oscilloscope enters the autorange mode and adjusts controls to produce a usable display of the input signal.

Function Setting

Acquire mode Sample

Display format YT

Display persist Off

Horizontal position Adjusted

Horizontal view Main

Run/Stop RUN

Horizontal scale (seconds/division) Adjusted

Trigger coupling DC

Trigger holdoff Minimum

Trigger level Adjusted

Trigger mode Edge

Vertical bandwidth Full

Vertical BW limit Off

Vertical coupling DC

76 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Tektronix TBS1052B, TBS1052B EDU, TBS1072B, TBS1072B EDU, TBS1102B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Important safety information

General safety summary

Service safety summary

Terms in the manual

Terms on the product

Symbols on the product

Compliance information

EMC compliance

Safety compliance

Environmental compliance

Getting started

General features

Installation

Power cord

Power source

Security loop

Ventilation

Functional check

Probe safety

Manual probe compensation

Probe attenuation setting

Current probe scaling

Self calibration

Firmware updates through the internet

Check the version of the latest available firmware

Operating basics

Display area

Message area

Using the menu system

Vertical controls

Horizontal controls

Trigger controls

Menu and control buttons

Input connectors

Other front-panel items

Understanding oscilloscope functions

Setting up the oscilloscope

Using autoset

Using autorange

Saving a setup

Recalling a setup

Default setup

Triggering

Source

Types

Modes

Coupling

Position

Slope and level

Acquiring signals

Acquisition modes

Time base

Scaling and positioning waveforms

Vertical scale and position

Taking measurements

Graticule

Cursors

Automatic

Application examples

Taking simple measurements

Using autoset

Measuring two signals

Using autorange to examine a series of test points

Taking cursor measurements

Measuring pulse width

Measuring rise time

Analyzing signal detail

Looking at a noisy signal

Capturing a Single-Shot signal

Optimizing the acquisition

Measuring propagation delay

Triggering on a specific pulse width

Triggering on a video signal

Triggering on video fields

Triggering on video lines