Tektronix THS3014, THS3024 Primary User

Download

THS3000 Series

ZZZ

Oscilloscopes

User Manual

*P077060700*

077-0607-00

THS3000 Series

ZZZ

Oscilloscopes

User Manual

www.tektronix.com

077-0607-00

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.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O. Box 5 0 0 Beaverto USA

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

n, OR 97077

In North America, call 1-800-833-9200. Worl dwid e, visi t www.tektronix.com to ﬁnd contacts in your area.

Warranty

Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment. If any such 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. Parts, modules and replacement products used by Tektronix for warranty work may be n the property of Tektronix.

ew or reconditioned to like new performance. All replaced parts, m odules and products become

In order to o 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, with shipping charges prepaid. 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 result b) to repair damage resulting from improper use or connection t o 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.

TRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

TEK 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.

[W4 – 15AUG04]

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration of

ing from attempts by personnel other than Tektronix representatives to install, repair or service the product;

Table of Contents

General Safety Summary ......................................................................................... vi

Preface .............................................................................................................. ix

Where To Find More Information ........................................................................... x

Terms Used In This Manual .................................................................................. x

Getting Started

Introduction ....................................................................................................... 1-1

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

Front Panel Navigation........................... ................................ ........................... 1-2

Initial Setup. . ..... . ..... . ..... . ..... . ..... . ..... . ... . . . .... . . .... . . .... . . .... . . .... . . .... . . .... . ..... . ..... . .. 1-9

Restore Factory Default Settings.................. .................................. ..................... 1-12

Tilt Stand, Hanging Hook, and Kensington® Lock.................................................... 1-13

Operating Basics

Operating Basics.................................................................................................. 2-1

Input Connections .... ................................ ................................ ....................... 2-1

About Floating Measurements ............................................................................. 2-2

Connect Probes and Leads......... ................................ ................................ ......... 2-4

Select an Input Channel ................................................................................... 2-12

Adjust the Probe Type Settings. . ..... . .... . ..... . ..... . ... . . ..... . ..... . .... . ..... . ..... . ... . . ..... . ..... 2-13

Display an Unknown Signal with Autoset or AutoRange™.......................................... 2-13

Automatic Measurements...................... .................................. ......................... 2-15

Stop the Display .... ................................ .................................. ..................... 2-18

Average, Persistence, and Glitch Capture . ..... ..... . ..... . ..... . .... . . .... . ..... . ..... . ... . . ..... . ..... 2-19

Acquire Waveforms ....................................................................................... 2-22

Pass-Fail Testing ........................................................................................... 2-30

Functional Overview

Recorder Functions............ .................................. ................................ ................. 3-1

Plot Measurements Over Time (TrendPlot™)................... ................................ ......... 3-1

Record Waveforms In Deep Memory (Scope Roll Mode) ............. ................................ . 3-3

Analyze Waveforms.............................................................................................. 3-6

Use Replay ................................................................................................... 3-6

Use Zoom..................................................................................................... 3-7

Use Cursors................................ ................................ ................................ ... 3-9

THS3000 Series Oscilloscopes User Manual i

Table of Contents

Trigger Functi

Save and Recall................................................................................................. 3-25

Troubleshooting................................................................................................. 3-33

Appendices

Appendix A:

Introduction.................................................................................................. A-1

General Speciﬁcations........................................ ................................ .............. A-1

Recorder Speciﬁcations .................... .................................. .............................. A-6

Zoom, Data Log, and Cursors Speciﬁcations...... ................................ ...................... A-6

Miscellaneous Speciﬁcations ................ .................................. ............................ A-7

Safety S

Probe Speciﬁcations .... ................................ .................................. ................ A-12

Appendix B: Connect The Instrument To A Computer ..................................................... B-1

USB Ports............................ .................................. ................................ ...... B-2

Install USB Drivers....................... ................................ .................................. B-3

Appendix C: Probe Compensation and Compatible Maximum Voltages ..................... ............ C-1

Compe

Compatible Probe Maximum Voltages ............................... .................................. .. C-3

Appendix D: Battery Pack.............................. ................................ ........................ D-1

Save Battery Life ........................................................................................... D-1

Charge the Batteries .................... .................................. ................................ .. D-2

Appendix E: Maintenance and Cleaning................ ................................ ...................... E-1

intaining the Instrument .............. ................................ .................................. E-1

Cleaning ..................................................................................................... E-1

Storage ... ................................ .................................. ................................ .. E-1

ons............................................................................................... 3-14

Speciﬁcations ...... .................................. ................................ ............ A-1

peciﬁcations ..................................................................................... A-10

nsate Voltage Probes ............................................................................... C-1

Index

ndex

ii THS3000 Series Oscilloscopes User Manual

List of Figures

Figure 1-1: Instrument front panel............. .................................. ............................... 1-3

Figure 1-2: Rising edge of square wave ..................................................................... 1-12

Figure 1-3: Tilt stand and location of Kensington® Lock .............. ................................ ... 1-13

Figure 1-4: How to use the hanging hook handle........................................................... 1-14

Figure 1-5: How to use the hanging strap handle........................................................... 1-15

Figure 2-1: Top panel input connectors ........................................................................ 2-1

Figure 2-2: Isolated input architecture ......................................................................... 2-2

Figure 2-3: Common-reference input architecture......................... .................................. . 2-3

Figure 2-4: Parasitic capacitance between probes, instrument, and environment...... ................... 2-5

Figure 2-5: Parasitic capacitance between analog and digital reference ................ ................... 2-6

Figure 2-6: Correct connection of reference leads........................... ................................ . 2-6

Figure 2-7: Wrong connection of reference leads............................................................. 2-7

Figure 2-8: Making voltage probe connections on four channels. ......... ................................. 2-8

Figure 2-9: Voltage probe connection using a ground spring............................... ................. 2-9

Figure 2-10: Connections using hook tips and alligator clip grounding.. . ..... . ..... . ..... . ... . . . .... . . . 2-10

Figure 2-11: Probe tip ground ring ........................................................................... 2-11

Figure 2-12: Display with Autoset .................. ................................ ......................... 2-14

Figure 2-13: Display with AutoRange™ ....................... ................................ ............. 2-15

Figure 2-14: Hz and V peak-peak as measurements................................. ....................... 2-17

Figure 2-15: Frozen (stopped) display .................. .................................. ................... 2-18

Figure 2-16: Live (running) display......... ................................ ................................. 2-19

Figure 2-17: Using persistence to observe dynamic signals .............. ................................. 2-21

Figure 2-18: FFT measurement ............................... .................................. ............. 2-27

Figure 3-1: RECORDER REPLAY main menu .. . ..... . ..... . ..... . .... . . .... . ..... . ..... . ..... . .... . ..... . . 3-1

Figure 3-2: TrendPlot™ measurement......................................................................... 3-2

Figure 3-3: Recording waveforms using Scope Roll Mode ................................................. 3-3

Figure 3-4: Zooming in on a Waveform ...... ................................ ................................. 3-8

Figure 3-5: Voltage measurement with horizontal cursors................................................. 3-10

Figure 3-6: Time measurement with vertical cursors....................................................... 3-12

Figure 3-7: Risetime measurement using cursors.............................. ............................. 3-13

Figure 3-8: Screen with all trigger information ............................................................. 3-17

Figure 3-9: Trigger delay or pretrigger view ........................... ................................ ..... 3-18

Figure 3-10: Making a single shot measurement .............. ................................ ............. 3-21

Figure 3-11: N-Event triggering .............................................................................. 3-22

Figure 3-12: Trigger on NTSC video signal ﬁeld 1........................................ ................. 3-23

Figure 3-13: Pulse width triggering .......................................................................... 3-24

THS3000 Series Oscilloscopes User Manual iii

Table of Contents

Figure A-1: Inp

Figure A-2: Maximum voltage between oscilloscope references, and between oscilloscope references and

earth ground ......... .................................. ................................ ..................... A-11

Figure B-1: Instrument USB connections .............. ................................ ...................... B-2

Figure C-1: Compensating voltage probes ................................................................... C-2

ut voltage versus frequency ................................................................. A-11

iv THS3000 Series Oscilloscopes User Manual

List of Tables

Table i: Product documentation................................................................................... x

Table 2 -1: C

Table 2-2: Pixel colors description ........................................................................... 2-30

Table 3-1: Trigger types ...................... ................................ ................................. 3-15

Table 3-2: Internal memory ................................................................................... 3-25

Table A-1: Record Length (Samples/points per input)...................... ................................ A-1

Table A-2: Oscilloscope Inputs . . ..... . ... . . ..... . ..... . ..... . ..... . .... . . .... . ..... . ..... . ..... . ..... . ..... . . A-2

Table A-3

Table A-4: Zoom, Data Log, and Cursors .................................................................... A-6

Table A-5: Display ...................... ................................ ................................ ........ A-7

Table A-6: Power .............................. ................................ ................................ .. A-7

Table A-7: Probe Calibration Output Signal ................. ................................ ................ A-8

Table A-8: Memory ............. ................................ ................................ ................ A-8

Table

Table A-10: Mechanical .. .................................. ................................ .................... A-9

Table A-11: Environmental......................................... .................................. .......... A-9

Table A-12: Safety speciﬁcations.................................. ................................ .......... A-10

Table A-13: THP0301 Voltage Probe ................. ................................ ...................... A-12

Table C-1: Compatible probe maximum voltages ......... ................................ .................. C-3

omparison of averaged versus nonaveraged waveforms ................... ................. 2-20

: Recorder............................................................................................. A-6

A-9: Interface Ports ...................................................................................... A-9

Table of Contents

THS3000 Series Oscilloscopes User Manual v

General Safety Summary

General Safet

To Avoid Fire or Personal

Injury

ySummary

Review the fo this product or any products connected to it.

To avoid pot

Only qualiﬁed personnel should perform service procedures.

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 r

Use proper power cord. Use only the power cord speciﬁed for this product and certiﬁed for the country of use.

Connect and disconnect properly. Do not connect or disconnect probes or test leads while they are connected to a voltage source.

Connect and disconnect properly. Connect the probe output to the measurement instrument 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 instrument.

llowing safety precautions to avoid injury and prevent damage to

ential hazards, use this product only as speciﬁed.

elated to operating the system.

Observe all terminal ratings. To avoid ﬁre or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings

ormation before making connections to the product.

inf

Do not apply a potential to any terminal, including the common terminal, that

ceeds the maximum ratingofthatterminal.

Power disconnect. The power cord disconnects the product from the power source.

notblockthepowercord;itmustremain accessible to the user at all times.

Do not operate without covers. Do not operate this product with covers or panels

emoved.

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

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

Replace batteries properly. Replace batteries only with the speciﬁed type and rating.

Use proper AC adapter. Use only the AC adapter speciﬁed for this product.

vi THS3000 Series Oscilloscopes User Manual

General Safety Summary

TermsinThisManual

Symbols and Terms on the

Product

Do not operate i

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry.

These terms

WAR NI NG . 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.

These terms may appear on the product:

DANGER the marking.

WARNI read the marking.

CAUT

n wet/damp conditions.

may appear in this manual:

indicates an injury hazard immediately accessible as you read

NG indicates an injury hazard not immediately accessible as you

ION indicates a hazard to property including the product.

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

THS3000 Series Oscilloscopes User Manual vii

General Safety Summary

viii THS3000 Series Oscilloscopes User Manual

Preface

This manual c THS3014 Handheld Oscilloscopes. It consists of the following chapters:

The Getting panel navigation, button menus, and provides installation instructions and a functional check procedure. (See page 1-1.)

The Operating Basics chapter provides information about operating the front panel, what functions each menu accesses, how to connect to inputs, and using the tilt and security features. (See page 2-1.)

The Functional Overview chapter provides an overview of how the various functions and features of the instrument operate. (See page 3-1.)

The Appendix A: Speciﬁcations chapter includes electrical, environmental, physical speciﬁcations for the instrument, and certiﬁcations and compliances. (See page A-1.)

The Appendix B: Connect The Instrument to a Computer chapter provides procedures for connecting the instrument to a computer and installing USB drivers and OpenChoice™ Desktop software. (See page B-1.)

The Appendix C: Probe Calibration and Compatible Maximum Voltages chapter provides calibration and other probe information. (See page C-1.)

The Appendix D: Battery Pack chapter provides information about how to preserve battery life and charge the battery. (See page D-1.)

ontains operating information for the Tektronix THS3024 and

Started chapter brieﬂy describes features of the instrument, front

The Appendix E: Maintenance and Cleaning chapter describes how to take care of the instrument. (See page E-1.)

THS3000 Series Oscilloscopes User Manual ix

Preface

WhereToFindM

ore Information

You c a n ﬁnd more information about your instrument in the following documents. These documents can be found on the Tektronix Web site at www.tektron

ix.com/manuals, on the Product Documentation CD that shipped

with your instrument, or both.

Table i: Product documentation

To read about Use these documents

Compliance, safety, standard and optional equipment and accessor battery installation

Operation, conﬁguration, speciﬁcations, and instrument capabil

Performance veriﬁcation procedures

Declassiﬁcation and security Declassiﬁcation and Security Instructions available for download at www.tektronix.com/manuals

ies, power on and off,

ities

Installation and Safety Instructions available printed, on the Product Documentation CD that shipped with your instrument, and for download at www.tektronix.com/manuals.

User manual (this manual) available in English, German, French, Spanish, Italian, Portuguese, Russian, Korean, Japanese, Simpliﬁed Chinese, and Traditional Chinese on the Prod www.tektronix.com/manuals.

Performance Veriﬁcation manual available on the Product Documentation CD that shipped with your instrument, and for download at www.tektronix.com/manuals.

uct Documentation CD that shipped with your instrument and for download at

Terms Used In This Manual

ated, electrically ﬂoating. The terms “isolated” or “electrically ﬂoating” are

Isol

used in this manual to indicate a measurement in which the product input BNC is connected to a voltage different from earth ground.

Working voltage. Voltage ratings that are mentioned in the warnings in this manual are given as limits for “working voltage”. They represent V AC RMS

0-60 Hz) for AC sine wave applications and as V DC for D C applications.

x THS3000 Series Oscilloscopes User Manual

Getting Started

Introduction

Product Description

In addition to a product and feature description, this chapter covers the following topics:

How to perform a quick functional check, install and compensate passive probes, compensate the signal p ath, and set the time and date

How to u se the front panel and menu system

How to identify the instrument controls and connectors

This chapter provides information about instrument setup, menus, and basic functions. This introduction does not cover all of the capabilities of the instrument but gives basic examples to show how to use the menus and perform basic operations.

The Tektronix THS3024 and THS3014 Four Channel Handheld Oscilloscopes are rugged, handheld oscilloscopes ideal for the lab and ﬁeld.

General Features

Key Features

Four fully isolated input channels

Volts, Time, Frequency and Watts cursor measurements

Bright, high contrast QVGA color display

7 hour battery operation or external AC/DC adapter power

21 automatic measurements

Comprehensive data logging and analysis capabilities

USB 2.0 device and host s upport for exchanging images, waveforms, and settings

Tektronix OpenChoice® Desktop software for capturing screen images, waveforms, and settings

Autoset and Autoranging for quick setup and hands-free operation

200 MHz bandwidth (3024 model)

100 MHz bandwidth (3014 model)

5 GS/s maximum sampling rate (3024 model)

Waveform averaging and enveloping with hardware peak detection

Advanced pulse and video trigger capability

THS3000 Series Oscilloscopes User Manual 1–1

Introduction

Front Panel

Accessories

Navigation

For a list of sta section of the THS3000 Series Oscilloscopes Installation and Safety Instructions that shipped with your instrument. You can also ﬁnd an electronic copy on the Web at www.tektronix.com/manuals and on the product documentation CD that was shipped with your instrument.

When you press any front panel button, the associated menu, if there is one, will appear on the display screen.

To select a menu item. Press one of the four black buttons beneath the menu item you want to select. (See Figure 1-1.)

To navigate through a submenu. Use the up, down, right, and left arrow keys to navigate through submenus that may appear.

To select a submenu item. Press the Enter button.

To exit a menu. Press the related button again. For example, if you pressed

Acquire to access the Acquire menu, press the Acquire button again to exit the menu.

ndard, optional, and service accessories, please see the Accessories

To hide a menu. Press the Menu Off button to hide a menu. Press it again to view the same menu.

Highlighted white menu items. A menu item highlighted in white means that item is the current setting.

Highlighted black m enu items. A m enu item highlighted in black means that the selection cursor is on that item.

1–2 THS3000 Series Oscilloscopes User Manual

Introduction

Figure 1-1: Instrument front panel

The front panel allows you to conﬁgure the instrument, access SW version information, display language options, and instrument functions. In this section of the manual, you can review the menus for each button. The buttons are listed in alphabetical order.

Acquir

The Acquire button provides you access to acquisition parameters, such as

measurements, recorder features, and special acquisition modes.

The MEASURE submenu. In addition to waveforms, the instrument can also display four measurements (A, B, C, D) which a re independently selectable. Each measurement corresponds to any input (Ch 1, Ch 2, Ch 3, and Ch 4) combination, and you can select parameters for each measurement as follows:

For Measurements A-D

On: Ch1, Ch2, Ch3, Ch4

V: ac, dc, ac+dc, Peak (Max, Peak-Peak, Min)

A: ac or dc or ac+dc (100 μV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1V/A,10V/A,100V/A),Phase

Measurement: Hz, Rise time (cursors), Fall time (cursors), Pulse (width positive, width negative)

Decibels: Type (dBV, dBm 50 Ω,dBm600Ω), On (Vac, Vdc, Vac+dc)

THS3000 Series Oscilloscopes User Manual 1–3

Introduction

Duty Cycle: Pos

mAs (current): Sensitivity (100 μV/A, 1 mV/A, 100 mV/A, 400 mV/A, 1V/A,10V/A,100V/A)

The RECORDER REPLAY submenu. This submenu provides options for recording measurement data and screen images, and contains the following:

Trend Plot: Recorder Run/Stop, Options (Time of Day, From Start), View All, Normal, Exit Recorder

Scope Roll Mode: Recorder Run/Stop, Exit Recorder

Data Log Replay: Previous, Next, Play, Exit Replay

The ACQUIRE OPTIONS submenu. This submenu provides acquisition options and contains the following:

Glitch: On, Off

Memory: Short, Long

Average: Off, On (Average factor: 2, 4, 8, 64; Average: normal, smart)

Waveform: Normal, Per Normal, Display Envelope, Display Dot-join OFF), Mathematics (Function, Source A, Source B), Reference (On, Off, New, Recall, Pass/Fail Testing Off, Pass/Fail Testing Store Fail, Pass/Fail Testing Store Pass)

itive, Negative

sistence (Off, Short, Medium, Long, Inﬁnite, Display

Autoset (AutoRange)

Ch 1 – Ch 4

Pressing the Autoset button results in the automatic setup of all active channels for vertical, horizontal, and trigger systems. Press and hold the Autoset button to activate the AutoRange function. This function provides continuous auto setup of vertical, horizontal, and trigger systems that track signal changes. Neither the Autoset function nor the AutoRange function has a dedicated setup menu. You can change Autoset mode from the Utility>Options>Auto Set Adjust menu.

The Ch 1 and other channel buttons allow you to set probe input and probe parameters as follows:

The INPUT 1 menu. This menu allows you to turn Input 1 On and O

The COUPLING menu. This menu allows you to set input coupling to DC or AC.

The PROBE 1 submenu. This submenu allows you to set the probe type and

attenuation or sensitivity as follows:

ff.

1–4 THS3000 Series Oscilloscopes User Manual

Introduction

Cursors

Probe Type: Vol

Attenuation (Voltage): 1:1, 10:1, 100:1, 1000:1, 20:1, 200:1

Sensitivity (Current): 100 μV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1 V/A, 10 V/A, 100 V/A

Probe Calibration: Start Yes, Start No

The INPUT 1 O

bandwidth parameters and contains the following:

Polarity:

Bandwidth: Full, 20 kHz (HF reject), 20 MHz

The Cursors button a llows you to view and adjust cursors as follows:

The CURSOR submenu. This menu allows you to turn select from the following cursor types:

Normal, Inverted, Variable

tage, Current

PTIONS submenu. This submenu allows you to set the polarity and

׀ : Single vertical cursor

׀׀ : Two vertical cursors

= : Two horizontal cursors

: Rise time cursor

ll time cursor

:Fa

The MOVE submenu. Press the arrows keys to move the cursor(s) right, left, up, or down.

The T, 1/T, mVs, RMS submenu. This submenu allows you to select the units to

iew for the distance between the cursors. This menu option is only available

v when the double vertical cursor is selected:

T: time

1/T: 1/time or frequency

mVs: Millivolts per second

RMS: Root mean squared

THS3000 Series Oscilloscopes User Manual 1–5

Introduction

Enter

Level

Menu Off

Position (horizontal)

Position (vertical)

The AUTO/MANUA

adjust or manual adjust This menu is only available when the rise time or fall time cursor is selected.

The 1, 2, 3, 4, M, OFF submenu. This submenu allows you to select to which channel to apply the cursor or to turn the cursor off for a selected channel. Each number corresponds to the channel number.

Use the Enter button to select menu items.

The Level button allows you to adjust the trigger input level.

The Menu Off button allows you to hide any menu from the display. Press the button again to view

Use the Position horizontal button to move a waveform left or right along the display grid.

Use the Position verticalbuttontomoveawaveformupordownalongthe display grid.

L submenu. This submenu allows you to set the cursors to auto

the same menu.

Run/Stop

Save

Press the Run/Stop button to start and stop acquisition. When acquisition is running, the word RUN is displayed in the top right corner of the display screen outlined in green. When acquisition is stopped, the word STOP is displayed in the top right corner of the display screen outlined in red.

The Save button allows you to save, recall, copy, move, rename, and delete screens and setups to internal instrument memory or to the USB device as follows:

The SAVE menu. This menu allows you to select what to save where.

MEMORY: Select from INT (internal instrument memory) or USB (USB memory device).

SavetoINT(orUSB):SelecttosaveScreen+SetuporReplay+Setupto internal instrument memory or USB device.

The RECALL menu. This menu allows you to recall DATA or SETUP from internal or USB device m emory.

1–6 THS3000 Series Oscilloscopes User Manual

Introduction

Scale (horizontal)

The INT menu. Se

instrument memory. There is no submenu associated with this menu item.

The FILE OPTIONS menu. This menu allows you to do the following:

MEMORY: Select from INT (internal instrument memory) or USB (USB memory device).

COPY: Copy the highlighted ﬁle from internal memory to USB (or from USB to internal memory).

MOVE: Move the highlighted ﬁle from internal memory to USB (or from USB to internal memory).

RENAME: Rename the highlighted ﬁle.

DELETE: Delete the highlighted ﬁle.

SELECT ALL: This menu item allows you to select all saved ﬁles at once.

Use the Scale horizontal button to shrink or expand the horizontal scale of the display grid. The value is displayed in the right bottom portion of the display screen.

lect this menu item to capture a screen and setup to internal

Scale (vertical)

Single

Trigger

Use the Scale vertical button to shrink or expand the vertical scale of the display grid for the selected input channel. The value is displayed in the left bottom portion of the display screen.

Press the Single button for a single acquisition. There is no menu associated with this button.

The Tr igger button allows you to set various trigger parameters. The menu changes as shown here depending on whether trigger is set to automatic (ﬁrst menu) or manual (second menu). All other m enu items remain the same.

AUTO LEVEL. (Automatic setting only) Select automatic setting of trigger levels.

AUTO TRIG. (Manual setting only) Select from one of four programmed trigger

conditions or enable the instrument to generate a trigger if a real trigger does not occur.

SLOPE. Select to trigger on the rising edge (

), falling edge ( ), or either ( ).

The TRIGGER OPTIONS menu. This menu allows you to select for the following trigger types and parameters:

THS3000 Series Oscilloscopes User Manual 1–7

Introduction

Automatic Auto

Trigger Conditions: Update (Auto, Normal, Single Shot), Trigger Filter (Off,

Noise Reject, HF Reject), NEvent (Off, On)

Video on 1 (channel 1 only): Polarity (Positive, Negative), Signal type (PAL, NTSC, PALPIus, SECAM, Non interlaced)

Pulse Width on 1 (channel 1 only): Pulses (positive, negative), Condition (<t, >t, =t (±10%), ≠t (±10%), Update (On Trigger, Single Shot)

The FIELD menu. (Available for Video trigger only) You can select from Field 1 or 2 to trigger either on the ﬁrst half of the frame (odd, ﬁeld 1) or on the second half of the frame (even, ﬁeld 2).

The ALL LINES menu. (Available for Video trigger only) Press this menu item to trigger on all line synchronization pulses (horizontal synchronization).

The LINE NR menu. (Available for Video trigger only) Press this menu item to enable the LINE NR option and use the Vertical Position button to view a speciﬁc video line in more detail.

The WIDTH menu. (Available for Pulse Width trigger only) Press the Vertical Position button to adjust the pulse width.

Level: Select from > 15 Hz or > 1 Hz

Utility

The CONDITION menu. (Available for Pulse Width trigger only) Press this menu

item to select the condition for trigger: >t, <t, or Off.

The Utility button allows you to access battery options, language options, version and calibration information and display brightness and contrast:

The OPTIONS menu. This submenu allows you to set the probe type and attenuation or sensitivity as follows:

Auto Set Adjust: Search for signals above a speciﬁed Hz threshold, Input coupling (Set to DC, Unchanged), Display glitches (Set to On, Unchang

Battery Save Options: Instrument Auto-Off (5 minutes, 30 minutes, Disabled), Display Auto-Off (30 seconds, 5 minutes, Disabled)

Date Adjust: Year, Month, D ay, Format (DD/MM/YY, MM/DD/YY)

Time Adjust: Hours, Minutes, Seconds

Factory Default: Select Yes or No

The LANGUAGE menu. This submenu allows you to select the language in which you want user messages to be displayed. Choose from English, French, German,

ed)

1–8 THS3000 Series Oscilloscopes User Manual

Introduction

Initial Setup

Zoom

Spanish, Portu Russian, and Korean.

The VERSION & CAL menu. This submenu allows you to view instrument information including model and serial number, software version, and calibration date. You can also access information on battery level, status total capacity, time to empty, and battery serial number.

The CONTRAST and LIGHT menu. This menu item allows you to adjust display contrast and to dim the display. Use the right or left arrow keys to dim the display. Use the up and down arrow keys to a djust display contrast.

Press the Zoom buttontozoominonaspeciﬁed segment of a waveform. The menu allows you to access the following:

GLITCH: Select on or off.

ZOOM: Adjust the zoom using the up and down arrow keys.

ZOOM ON/OFF: Select on or off.

guese, Italian, Japanese, Simpliﬁed Chinese, Traditional Chinese,

Battery Power

The following procedures describe how to power your instrument, turn it on and off, quickly verify that your instrument is powering on and functioning correctly, compensate passive probes using the built-in compensation signal and set the time and date.

You should perform all initial setup procedures the ﬁrsttimeyouusethe instrument.

You should perform the probe compensation procedure whenever you attach a passive probe for the ﬁrst time to any input channel.

This instrument can be powered by the THSBAT, a 10.8 V custom UL recognized Li-ion battery pack. See the instructions that come with the battery for installation information. You can also ﬁnd those instructions on the Tektronix Web site at www.tektronix.com/manuals.

Before using the battery, read the THS3014 and THS3024 Four Channel Handheld Oscilloscopes Installation and Safety Instructions tha your instrument for important battery related safety information. This manual can also be found on the Tektronix Web site at www.tektronix.com/manuals.

WAR NI NG . Fire can cause personal injury and/or property damage. To prevent

risk of ﬁre, do not use any battery but the battery Tektronix shipped with this product. Only use the THSBAT battery pack with this product.

t shipped with

THS3000 Series Oscilloscopes User Manual 1–9

Introduction

External Power

Power-On

This instrumen (Tektronix part number 119-7900-00). This instrument can only be safely operated using this particular AC power adapter.

Use the supplied power cord with the adapter. For a list of available power cords, see the THS3000 Series Oscilloscopes Installation and Safety Instructions that shipped with your instrument. It can be also be found on the Tektronix Web site at www.tektronix.com/manuals.

Refer to the Speciﬁcations section of this manual for additional information on electrical speciﬁca tions. (See page A-1.)

WARNING. Fire can cause personal injury and/or property damage. To prevent

risk of ﬁr provided by Tektronix with this instrument.

1. If you a power source, check that the AC power adapter is connected to the instrument and that the adapter is connected to a power cord that is plugged into a properly grounded power outlet.

2. Press the power button on the instrument front panel and the instrument will turn on. A power plug icon should appear in the upper right portion of the display showing that the instrument is powered from the AC adapter.

t can also be powered externally with an AC power adapter

e, do not use any AC adapter with this product other than the AC adapter

re using a battery pack, go to s tep 2. If you are using an external

Power-Off

1. Press the power button on the instrument front panel to turn the instrument off.

2. To remove power completely, disconnect the AC adapter from the side panel

of the instrument (or remove the battery).

1–10 THS3000 Series Oscilloscopes User Manual

Introduction

Functional Check

After you have i quick functional check to verify that your instrument is operating correctly. See the THS3000 Series Oscilloscopes Installation and Safety Instructions for battery installation and power information.

Perform this adjustment to match your probe to the input channel. This should be done whenever you attach a passive probe for the ﬁrst time to any input channel. The calibration consists of a high frequency adjustment and a DC calibration for 10:1 probes and 100:1 probes. Yo u can also read more about probe calibration. (See page C

1. Press the power button on the front panel to turn on the instrument.

2. After a few seconds, you should see a colored trace on the display screen. The

color of the trace corresponds to the color of the channel input button on the fron

3. Connect a voltage probe to the Ch 1 input BNC on the instrument top panel. The col button and the color of the probe.

4. Attac

NOTE. Connect the probe tip to the smallest metal connector (on the top) and the

reference lead to the larger metal connector (on the bottom).

h the probe tip and reference lead to the probe calibration connector

located above the USB port on the left side of the instrument.

nstalled the battery or connected external power, perform this

-1, Probe Compensation and Compatible Maximum Voltages .)

t panel.

or at the base of each BNC matches the color of the associated channel

5. Press the Ch 1 button to view the menu.

6. Select PROBE 1 and then use the arrow keys and the Enter button to choose

the appropriate attenuation from the menu.

7. Return to the PROBE 1 menu and select PROBE CAL.

elect Ye s .

8.S

9. You will see the rising edge of a square wave on the display (approximately

00 Hz). This is the signal used to calibrate the probe. (See Figure 1-2.) (See

5 page C-1, Probe Compensation and Compatible Maximum Voltages.)

THS3000 Series Oscilloscopes User Manual 1–11

Introduction

Resto

Figure 1-2

10. Adjust th

11. Select Continue and instrument will respond that the calibration is complete

12. Select Close.

13. Repeat steps 3 through 12 on all remaining channels.

: Rising edge of square wave

and the c

re Factory Default Settings

To reset the instrument to the factory default settings, do the following:

1. Press the power button o n the front panel to turn on the instrument.

2. Press the Utility button.

3. Select Options.

4. Pre

5. Press the Enter button.

6. Select Ye s when prompted to clear all memories and go back to factory

ss the down arrow key and navigate to Factory Default.

defaults.

e probe as needed.

alibration signal will be removed.

7. When the process is complete, the User Options menu will be displayed again. Select Close to exit the menu.

1–12 THS3000 Series Oscilloscopes User Manual

Introduction

Tilt Stand, Ha

Kensington® Lock

nging Hook, and Kensington® Lock

Tilt Stand

This instrument has a built-in tilt stand that folds out and folds back into place when not in use. For benchtop use, pull the portion of the tilt stand nearest to thebaseofth Figure 1-3.)

This instrument has a security slot compatible with a Kensington® lock. The Kensingto against thefts of opportunity. Locking cables are often available at laptop computer accessory dealers and other such stores. (See Figure 1-3.)

e instrument up and away from the instrument until it locks. (See

n Security Slot along with a locking cable provides physical security

Figure 1-3: Tilt stand and location of Kensington® Lock

THS3000 Series Oscilloscopes User Manual 1–13

Introduction

Hanging Hook

To hang the inst can attach a hook handle (optional accessory). To attach the hook handle, close the tilt stand, screw the hook handle into the back of the instrument, and then hang the instrument where needed. (See Figure 1-4.)

rument from a cabinet door, separation wall, or ladder rung, you

Figure 1-4: How to use the hanging hook handle

1–14 THS3000 Series Oscilloscopes User Manual

Introduction

Hanging Strap

You can also han the hanging strap handle. To attach the hanging strap to the instrument, thread it through the bars on the top right and left sides of the instrument and secure the ends as shown in the following ﬁ gure. You can now hang the instrument as needed. (See Figure 1-5.)

g the instrument from a door handle or similar object using

Figure 1-5: How to use the hanging strap handle

THS3000 Series Oscilloscopes User Manual 1–15

Introduction

1–16 THS3000 Series Oscilloscopes User Manual

Operating Basics

Input Connect

ions

BNC Connectors

Unterminated BNC Inputs

The top panel of the instrument has four safety BNC jack signal inputs. The color at the base of each BNC input corresponds to the color of the related channel buttononth measurements with each input. (See Figure 2-1.)

NOTE. Read the important safety information about taking ﬂoating measurements.

(See page 2-2.)

The instrument BNC reference connection is made on the inside of the BNC connector. The black bayonet on the outside of the BNC connectors does not provide electrical contact. For a good connection, make sure your probe or cable connector is pushed on and twist locked. Replace cables or probes that have worn co

The black bayonet on the outside of the BNC input connectors does not shield the connector input from unwanted electrical noise from nearby circuits. Connect a50Ω establishing a “No Signal” baseline c ondition.

e front panel. Isolated input architecture allows independent ﬂoating

nnectors.

terminator or a BNC shorting plug to the input BNC connector when

Figure 2-1: Top panel input connectors

THS3000 Series Oscilloscopes User Manual 2–1

Operating Basics

About Floating Measurements

You can use the independently ﬂoating isolated inputs to m easure signals that are independently ﬂoating from each other. The instrument has independently ﬂoating isolated inputs. Each input section (1, 2, 3, and 4) has its own signal input and its own reference input. The reference input of each input section is electrically isolated fr

The isolated input architecture of this instrument offers the following advantages:

Simultaneous measurement of independently ﬂoating signals.

Additional safety. Because the commons are not directly connected, the chance of causing a short circuit when measuring multiple signals is greatly reduced.

Additional safety. When measuring in systems with multiple grounds, the ground currents induced are kept to a minimum.

om the reference inputs of the other input sections. (See Figure 2-2.)

Figure 2-2: Isolated input a rchitecture

2–2 THS3000 Series Oscilloscopes User Manual

Operating Basics

Many handheld o shares a common reference for the oscilloscope channels. (See Figure 2-3.) With this architecture, all input signals must have the same voltage reference when you take any multi-channel measurements.

scilloscope products have the architecture shown below, which

2-3: Common-reference input architecture

Figure

Most b the insulated case. Without differential preampliﬁers or external signal isolators, bench-top oscilloscopes are not suitable for taking ﬂoating measurements.

For oscilloscopes with isolated inputs, references are not connected together inside the instrument. Therefore, each reference of the used inputs must be connected to a reference voltage. Independently ﬂoating isolated inputs are still coupled by parasitic capacitance. This can occur between the input references and the environment, and between the input references mutually. For this reason, you sho reference of an input is connected to a high speed and/or high voltage signal, you should be aware of parasitic capacitance. (See Figure 2-4 on page 2-5.)

NOTE. The input channels are electrically isolated from the USB ports and from

the power adapter input.

ench-top oscilloscopes share the architecture shown above, but without

uld connect the references to a system ground or another stable voltage. If the

THS3000 Series Oscilloscopes User Manual 2–3

Operating Basics

Connect Probe

s and Leads

Beware of High Voltages

You can connect voltage probes and test leads to any or all of the BNC connectors. When using voltage probes, match the color of the probe with the color at the base of the BNC con glance. Following are some examples of how to connect probes and leads.

WARNING. To prevent electrical shock, do not exceed the measurement or ﬂoating

voltage ratings for the instrument input BNC connector, probe tip, or probe reference lead.

Understand the voltage ratings for the probes you are using and do not exceed those ratings. The following voltage ratings are important to know and understand:

The maximum measurement voltage from the probe tip and BNC signal to the probe reference lead

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

The maximum measurement voltage from the probe tip and BNC shell to earth ground

nector to make it easy to see which channel you are using at a

These voltage ratings depend on the probe and your application. Refer to the

Speciﬁcations section in this manual for more information. (See page A-12, Probe Speciﬁcations.)

See the instruction sheet that shipped with your probes for more probe safety information.

RNING. To avoid electric shock, do not use probes that require a ground

connection, such as the Tektronix P5200 High Voltage Differential Probe, with the THS3000 Series Oscilloscopes. The P5200 High Voltage Differential Probe requires an instrument with grounded inputs and the TH3000 Series Oscilloscopes have ﬂoating inputs (isolated inputs).

2–4 THS3000 Series Oscilloscopes User Manual

Operating Basics

Attach the Reference

Leads Correctly

If you are using reference lead for each channel directly to your circuit. These attachments are required because the channels are electrically isolated; they do not share a common chassis connection. Use the shortest possible reference lead with each probe to maintain good signal ﬁdelity.

The probe reference lead presents a higher capacitive load to the circuit-under-test than the probe tip. When taking a ﬂoating measurement between two nodes of a circuit, attach the probe reference lead to the lowest impedance or least dynamic of the two n

Parasitic capacitance between probes, instrument, and environment. Parasitic capacitance can occur between the input references and the environment. For this reason, you should connect the references to a system ground or another stable voltage. If the reference of an input is connected to a high speed and/or high voltage

signal, you should be aware of parasitic capacitance. (See Figure 2-4.)

all four of the instrument channels, you must attach the probe

odes.

ure 2 -4: Parasitic capacitance between probes, instrument, and environment

Fig

THS3000 Series Oscilloscopes User Manual 2–5

Operating Basics

Parasitic capa

can occur between the input references mutually. For example, between an analog and digital reference. For this reason, you should connect the references to a system ground or another stable voltage. If the reference of an input is connected to a high speed and/or high voltage signal, you should be aware of parasitic capacitance. (See Figure 2-5.)

citance between analog and digital reference. Parasitic capacitance

Figure 2-5: Parasitic capacitance between analog and digital reference

This is the correct way to connect reference leads. (See Figure 2-6.)

Figure 2-6: Correct connection of reference leads

2–6 THS3000 Series Oscilloscopes User Manual

Operating Basics

This is a the wro reference lead 4 can be transmitted by parasitic capacitance to the analog input ampliﬁer. (SeeFigure2-7.)

Figure 2-7: Wrong connection of reference leads

ng way to connect reference leads. Noise that is picked up by

THS3000 Series Oscilloscopes User Manual 2–7

Operating Basics

Make Voltage Probe

Connections

To make measure the channel 1 input, the blue voltage probe to the channel 2 input, the magenta voltage probe to the channel 3 input, and the green voltage probe to the channel 4 input. Connect the short ground lead of each voltage probe to its own reference potential. (See Figure 2-8.)

ments on four channels, connect the yellow voltage probe to

Figure 2-8: Making voltage probe connections on four channels.

NOTE.

match the probe to the input channel of the instrument. (See page C-1, Probe Compensation and Compatible Maximum Voltages.)

For an accurate indication of the measured signal, it is necessary to

2–8 THS3000 Series Oscilloscopes User Manual

Operating Basics

Connections With Probe

Accessories

The following i attachments.

Connection using a ground spring. The following image shows a voltage probe connection using a ground spring.

WAR NI NG . To avoid electrical shock or ﬁre, do not connect the ground spring to

voltages higher than 30 Vrms from earth ground.

mages show several different types of probe accessories and their

Figure 2-9: Voltage probe connection using a g round spring

THS3000 Series Oscilloscopes User Manual 2–9

Operating Basics

Connections Us

as shown in the following image, making sure to reapply the insulation sleeve over the probe tip when the hook tip is not in use to avoid electrical shock. (See Figure 2-10.)

WARNING. To avoid electrical shock, reapply the insulation sleeve over the

probe tip when the hook clip is not used. This also avoids the risk of accidently interconne connected. (See Figure 2-8.)

ing Hook Tips and Alligator Clip Grounding. Connect the probes

cting the reference contact of multiple probes when ground leads are

Figure 2-10: Connections using hook tips and alligator clip grounding

WARNING. To avoid electrical shock use an insulation sleeve if you use the probes

without the probe tip or the ground spring.

2–10 THS3000 Series Oscilloscopes User Manual

Operating Basics

Connections wi

present on the ground ring near the probe tip. The ground ring is shown here.

WAR NI NG . To avoid electrical shock, always use the insulation sleeve or the

probe tip when using the probe reference (ground) lead. The voltage applied to the reference lead is also present on the ground ring near the probe tip. (See Figure 2-11.)

Figure 2

-11: Probe tip ground ring

th a ground lead. The voltage applied to the reference lead is also

THS3000 Series Oscilloscopes User Manual 2–11

Operating Basics

Select an Inpu

nPositionandScale

Assig

to Multiple Channels

t Channel

After you have connected probes to the desired inputs, you will want to select an input channel and set the parameters for that channel. To select a channel, do the follow

1. Press one of the channel buttons to display the associated input menu and to turn the i

2. Coupling is DC by default. Select AC coupling if you want to observe a small AC signal t will be visible in the lower left portion of the display screen.

NOTE. Autoset can affect how coupling functions. For more information, read

about the Autoset feature. (See page 2-13, Display an Unknown Signal with Autoset or AutoRange™.)

3. Press the function button to select Input Options and select the desired attenuation and bandwidth settings. Read m ore about attenuation and bandwidth settings. (See page 2-22, Acquire Waveforms.)

If the channel button is illuminated, the horizontal and vertical Position and Scale buttons are assigned to the indicated channel.

ing:

nput on.

hat rides on a DC signal. When AC coupling is active, the 1~ icon

To assign the Position and Scale buttons to multiple channels, do the following:

1. Press and hold the Ch 1 button.

2. Press another one or more channel buttons in sequence.

lease the Ch 1 button.

3. Re

All pressed buttons are now illuminated. The Position and Scale buttons now

pply to all active channels.

To deactivate this feature, press a single channel button.

2–12 THS3000 Series Oscilloscopes User Manual

Operating Basics

Adjust the Pro

be Type Settings

To obtain correct measurement results, the instrument probe type settings must correspond to the connected probe types. To select the Channel 1 probe setting, do the follow

1. Press the Ch 1 button to display the input menu.

2. Select PROBE 1 from the menu.

3. Select Voltage or Current from the Probe Type submenu.

4. Select the attenuation settings (for voltage probes) or the sensitivity settings

(for current probes) needed for your application.

5. Press the Menu Off button to remove the menu from the display screen.

ing:

Display an Unknown Signal with Autoset or AutoRange™

The Autoset and AutoRange™ features let the instrument d isplay complex, unknown signals automatically. The Autoset function provides a one time setup of the vertical, horizontal and trigger systems of the instrument. The Autoranging function provides continuous auto setup of vertical, horizontal, and trigger systems that track signal changes. When the signal changes, the setup is automatically adjusted to maintain the best display result. This feature is useful for quickly checking several signals.

Enable Autoset

There are several steps to enabling the Autoset feature. The ﬁrst involves setting the Autoset parameters as follows:

1. Press the Utility button.

2. Select Options.

3. Check that the Auto Set Adjust menu item is highlighted black, and then press Enter.

4. Select the frequency range:

If the frequency range is set to 15 Hz and up, the Autoset function responds more quickly at this range because the instrument is instructed not to analyze low frequency signal components.

THS3000 Series Oscilloscopes User Manual 2–13

Operating Basics

If the frequenc analyze low frequency components for automatic triggering.

5. Select Unchan retains the coupling setting as it is set in the channel button menu of the active input.

6. Select Unchanged or Set to o n under Display glitches. Selecting the former retains the glitch setting as it is set in the Acquire > ACQUIRE OPTIONS menu.

7. Exit the menu.

NOTE. The Autoset option for the signal frequency is similar to the automatic

trigger option for the signal frequency. However, the Autoset option determines the behavior of the Autoset function and effects show only when you press the Autoset

The second involves enabling Autoset as follows:

1. Press the Autoset button. AUTOSET will appear in the top right portion of

The waveform identiﬁer (1, 2, 3, or 4) is visible on the right side of the screen. The zero icon (-) beneath the waveform identiﬁer on the left side of the screen identiﬁes the ground level of the waveform. (See Figure 2-12.)

button.

the display screen showing you that Autoset is now active.

yrangeissetto1 Hz and up, the instrument is instructed to

ged or Set to DC under Input coupling. Selecting the former

Figure 2-12: Display with Autoset

2–14 THS3000 Series Oscilloscopes User Manual

Operating Basics

Enable AutoRange™

To enable the Au AUTORANGE appears in the top right corner of the display screen. The values showing across the bottom of the display screen show range and trigger information.

toRange™ feature, press and hold the Autoset button until

Figure 2-13: Display with AutoRange™

Automatic Measurements

This instrument offers a wide range of automatic measurements. In addition to the waveforms, the instrument can also display measurements: MEASURE A, B, C, D. These measurements are selectable independently and can be done on the

channel 1, 2, 3, or 4 input.

THS3000 Series Oscilloscopes User Manual 2–15

Operating Basics

Choose a Frequency

Measurement for Chann el

View a Hz and V Peak-Peak

Measurement

To choose a freq

1. Press the Ch 1 button to turn the input on.

uency measurement for channel 1, do the following:

2. Press the Acquire button to view the menu.

3. Select MEASURE.

4. Use the function button under MEASURE A B C D to select the measure to be displayed. For example, you can select A.

5. Use the arrow keys to select on Ch 1 to assign the measurement to that

channel and select the measurement parameters. Select Hz for frequency.

To choose also a Peak-Peak measurement for channel 2 as a second reading, do the following after ﬁnishing the previous procedure:

1. Press the Ch 2 button to turn the input on.

2. Press the Acquire button and select MEASURE

3. Press the function button to select MEASURE B.

4. Select on Ch2 using the arrow keys and then press the Enter button.

5. Select Peak using the arrow keys and then press the Enter button.

6. Select Peak-Peak.

2–16 THS3000 Series Oscilloscopes User Manual

Operating Basics

The display now the Hz measurement. The character size will be reduced when more then two readings are on. (See Figure 2-14.)

Figure 2

-14: Hz and V peak-peak as measurements

shows two measurements and the top left of the screen shows

NOTE. You can set the parameters for all four measurements and assign those to

any of the four channels while the MEASURE menu is open.

THS3000 Series Oscilloscopes User Manual 2–17

Operating Basics

Stop the Displ

You can freeze the display (all measurements and waveforms) at any time by pressing the Run/Stop button until STOP appears in red in the top right portion of the displa

yscreenandtheRun/Stop button is illuminated. (See Figure 2-15.)

Figure 2-15: Frozen (stopped) display

Press the Run/Stop button again to unfreeze the display. RUN will appear in green in the top right portion of the display. (See Figure 2-16.)

. RUN will only appear on the screen if the trigger is set to MANUAL

NOTE

from the Trigger button menu.

2–18 THS3000 Series Oscilloscopes User Manual

Figure 2-16: Live (running) display

Operating Basics

Average, Persistence, and Glitch Capture

Use the average functions to smooth waveforms by suppressing random or

elated noise in the waveform without loss of bandwidth. Waveform samples

uncorr with and without smoothing are shown here. (See Table 2-1.)

Smooth a Waveform With

ging

Avera

To smooth a waveform using averaging, do the following:

1. Press the Acquire button.

2. Select ACQUIRE OPTIONS.

3. Press the right arrow key to navigate to Average and black-highlight On...

4. Press the Enter button.

5. Sel

ect average factor Average 64. This averages the outcomes of 64

acquisitions.

THS3000 Series Oscilloscopes User Manual 2–19

Operating Basics

6. Select Normal o

Normal averaging. In the normal average mod waveform distort the averaged wave shape, and do not show up on screen clearly. When a signal really changes, for instance when you are probing, it takes some time before the new wave shape is stable.

Smart averaging. Smart averaging allows you to quickly probe. Incidental waveform changes, like a line ﬂyback in video, show up on screen instantly.

Table 2-1: Comparison of averaged versus nonaveraged waveforms

Waveform with Averaging Waveform with no averaging

r Smart average.

e, occasional deviations in a

Use Persistence, Envelope,

and Dot-Join to Display

Waveforms

You can use persistence to observe dynamic signals. (See Figure 2-17.)

1. Open the ACQUIRE OPTIONS menu.

2. From the Waveform submenu, black-highlight Persistence... and press the Enter button.

3. From the Digital Persistence and Display submenus, you can select the

following:

Select Short, Medium, Long,orInﬁnite to observe dynamic waveforms

like on an analog oscilloscope.

Select Off and Display Envelope to see the upper and lower boundaries of

dynamic waveforms (envelope mode).

Select Display Dot-join OFF to display measured samples only. Dot

join off may be useful when measuring for example modulated signals or video signals.

Select Display Normal to turn the envelope mode off and the dot-join

function on.

2–20 THS3000 Series Oscilloscopes User Manual

Figure 2-17: Using persistence to observe dynamic signals

Operating Basics

Glitche

To capture glitches on a waveform, do the following:

1. Open the ACQUIRE OPTIONS menu.

2. Select Glitch On.

3. Press

You can use this function to display events (glitches or other asynchronous wavef you can display HF modulated waveforms.

When off. In the 2 mV/div range, you can manually set glitch detect on.

CLOSE to exit the menu.

orms) of 8 ns (due to ADC’s with 125 MS/s sampling speed) or wider, or

you select the 2 mV/div range, glitch detect will automatically be turned

THS3000 Series Oscilloscopes User Manual 2–21

Operating Basics

Suppress High Frequ ency

Noise

Acquire Waveforms

Turning glitch Averaging will suppress the noise even more:

1. Open the ACQUI

2. Select Glitch Off.

3. Select Average On to open the Average menu

4. Select Av era ge 8.

You can read more about averaging and how to use it. (See page 2-19, Smooth a Waveform With Averaging.)

NOTE. Glitch capture and average do not affect bandwidth. Further noise

suppression is possible with bandwidth limiting ﬁlters. (See page 2-24, Adjust Bandwidth to Smooth Waveforms.)

Before the instrument can display a signal, the signal must pass through the input channel where it is scaled and digitized. Each channel has a dedicated input ampliﬁer and digitizer. Each channel produces a stream of digital data from which the instrument extracts waveform records. You can set a variety of signal acquisition parameters as described in this section.

detect off will suppress the high frequency noise on a waveform.

RE OPTIONS menu.

cquisition Speed and

Set A

Waveform Memory Depth

To set the acquisition speed, do the following:

1. Press the Acquire button.

2. Select ACQUIRE OPTIONS.

ttheMemory to one of the following:

3. Se

Short: For faster trace update rate; shortest record length, decreased zoom

ate.

Long: Maximum waveform detail; 10,000 samples per trace record length,

aximum zoom rate, lower trace update rate.

2–22 THS3000 Series Oscilloscopes User Manual

Operating Basics

Reverse the Attenuation of

the Displayed Waveform

Variable Input Sensitivity

You may want to r a negative-going waveform is displayed as a positive-going waveform which may provide a more meaningful view. An inverted display is identiﬁed by an inversed trace identiﬁer ( below the waveform. To invert a waveform, do the following for whichever input channel you are using:

1. Press the desired channel button.

2. Select the INPUT OPTIONS submenu.

3. Select Inverted for the Attenuator setting.

4. Exit the menu.

The varia continuously. For example, to set the amplitude of a reference signal to exactly 6 divisions.

The input sensitivity of a range can be increased up to 2.5 times, for example between 10 mV/div and 4 mV/div in the 10 mV/div range.

NOTE. Variable input sensitivity is not available in the Mathematics functions

(+, –, x, and FFT).

ble input sensitivity allows you to adjust any input sensitivity

everse the attenuation of a displayed waveform. For example,

) at the right of the waveform, and in the status line

To use the variable input sensitivity, do the following for whichever input channel you are using:

1. Press the Autoset button. The word AUTOSET will appear in the top right portion of the display screen until the autoset is complete.

NOTE. The autoset will turn off the variable input sensitivity. You can now select

the required input range. Keep in mind that the sensitivity will increase when

u start adjusting the variable s ensitivity (the displayed trace amplitude will

yo increase).

2. Press the channel button for the desired input to open the input menu.

3. Select INPUT OPTIONS.

4. Select Va riab l e attenuation.

THS3000 Series Oscilloscopes User Manual 2–23

Operating Basics

5. Exit the menu. You will see the channel number and Va r in the left bottom portion of the display screen.

NOTE. Selecting Variable will turn off cursors and automatic input ranging. Press

the Vertic

al Position buttons to increase or decrease sensitivity.

Adjust Bandwidth to

Smooth Wa

veforms

You can use bandwidth ﬁlters to suppress high frequency noise on waveforms by

g the working bandwidth to 20 kHz or 20 MHz. The application of ﬁlters

limitin will smooth the displayed waveform. For the same reason, it will also improve triggering on the waveform.

To us e th e HF reject ﬁlter on a desired input channel, do the following:

1. Press

2. Select INPUT OPTIONS.

3. Select the 20 kHz (HF reject) bandwidth.

NOTE. To suppress noise without loss of bandwidth, use the average function or

turn off Display Glitches. (See page 2-19, Smooth a Waveform With Averaging.)

the channel button for the active input to view the menu.

Using Mathematics

Functions +, –, x, XY-mode

2–24 THS3000 Series Oscilloscopes User Manual

You can add (+), subtract ( -), or multiply (x) two waveforms. The instrument will display the mathematical result wa veform and the source waveforms.

The XY-mode provides a plot with one input on the vertical axis and the second input on the horizontal a xis.

The Mathematics functions perform a point-to-point operation on the involved waveforms.

Operating Basics

To use a Mathe ma

1. Press the Acquire button.

2. Select ACQUIRE OPTIONS.

3. Select Mathematics from the Waveform options.

4. Select a function and then a channel for an A and B source.

tics function, do the following:

5. Once you have selected the function and sources, a new menu will appear and you should select from the options that menu provides. The menu varies by function as follows:

+, - :

XY-Mode:

FFT:

NOTE. The sensitivity range of the mathematical result is equal to the sensitivity

range of the least sensitive input divided by the scale factor.

THS3000 Series Oscilloscopes User Manual 2–25

Operating Basics

Using Mathematics

Function Spectrum (FFT)

The spectrum fu waveform(s) in the input trace color. It performs an FFT (Fast Fourier Transform) to transform the amplitude waveform from the time domain into the frequency domain.

To reduce the effect of side-lobes (leakage) it is recommended to use Auto windowing. This will automatically adapt the part of the waveform that is analyzed to a complete number of cycles.

Selecting Hanning, Hamming, or no windowing results in a faster update, but also in more leakage.

Check that the entire waveform amplitude remains on the screen.

To use the FFT function, do the following:

1. Press the Acquire button.

2. Select A

3. Select Mathematics from the Waveform options.

nction shows the spectral content of the input 1, 2, 3, or 4

CQUIRE OPTIONS.

2–26 THS3000 Series Oscilloscopes User Manual

Operating Basics

4. Select functio

5. Check that FFT shows at the top right of the display screen that appears.

(See Figure 2-18.)

If LOW AMPL shows, a spectrum measurement cannot be done because the waveform amplitude is too low.

If WRONG TB shows, the time base setting does not enable the instrument to display an FFT result. It is either too slow, which can result in aliasing, or t oo fast, which results in less than one signal p eriod on the screen.

n FFT and then Source channel and a Window type.

Figure 2-18: FFT measurement

6. Once you have selected the Function, Source, and Window settings, a new menu will appear at the bottom of the display screen.

elect the input on which you want to perform the FFT by pressing the

7.S

function button under the INPUT menu item.

THS3000 Series Oscilloscopes User Manual 2–27

Operating Basics

Compare Waveforms

8. Set the vertica pressing the function button under that menu item.

9. You can turn th or OFF under the FFT menu item.

Youcandisplayaﬁxed reference waveform with the actual waveform for comparison.

To create a reference waveform and to display it with the actual waveform, do the following:

1. Press the Acquire button.

2. Select ACQUIRE OPTIONS.

l amplitude scale to logarithmic (LOG)orlinear(LINEAR)by

e FFT display on and off (toggle function) by selecting ON

2–28 THS3000 Series Oscilloscopes User Manual

Operating Basics

3. Select Referen

4. Select On under Reference to display the reference waveform. The reference

waveform can be:

the last used reference waveform (if not available, no reference waveform

will be shown)

the envelope waveform (if the persistence function Envelope is on)

ce from the Waveform options.

5. Or, select Recall… to recall a saved waveform (or waveform envelope) from

memory and use it as a reference waveform.

6. Or, select New… to open the NEW REFERENCE menu and select the width of an additional envelope to be added to the momentary waveform.

7. Press Enter to store the momentary waveform and display it permanently for reference. The display screen also shows the actual waveform.

NOTE. To recall a saved waveform from memory and use it as a reference

waveform, read about recalling screens with associated setups. (See page 3-28.)

Reading a reference waveform with an envelope. Following is an example of a reference waveform with an additional envelope of ±2 pixels. 1 vertical pixel

THS3000 Series Oscilloscopes User Manual 2–29

Operating Basics

Pass-Fail Testing

on the display i

s 0.04 × range/div. 1 horizontal pixel on the display is 0.0333

× range/div.

Table 2-2:

Pixel colo

black pixels

gray pixels ± 2 pixels envelope

You can u

Pixel colors description

Descripti

basic wav

eform

se a reference waveform as a test template for the actual waveform. If at least one sample of a waveform is outside the test template, the failed or passed scope screen will be stored. Up to 100 screens can be stored. If the memory is full, the ﬁrst screen will be deleted in favor of the new screen to be stored.

The most appropriate reference waveform for the Pass Fail test is a waveform envelope.

To use the Pass-Fail function using a waveform envelope, do the following:

1. Display a reference waveform as described in the previous section Comparing

Waveforms. (See page 2-28.)

2. From the Acquire button ACQUIRE OPTIONS menu, select Reference.

lect one of the following options from the Pass Fail Testing menu:

3. Se

Store “Fail”: Each screen with samples outside the reference will be

ored.

Store “Pass”: Each screen with no samples outside the reference will

estored.

Off: No screens will be stored.

Each time a screen is stored you will hear a beep. You can read more about how to analyze stored screens using replay, zoom, and cursors. (See page 3-6, Analyze Wavef orms .)

2–30 THS3000 Series Oscilloscopes User Manual

Functional Overview

Recorder Functions

This chapter provides a step-by-step introduction to the recorder functions of the instrument. The introduction gives examples to show how to use the menus and perform basic operations.

Access the RECORDER REPLAY.. menu by ﬁrst pressing the Acquire button. From the RECORDER REPLAY.. menu, you can now choose from the recorder functions.

Figure 3-1: RECORDER REPLAY main menu

Plot Measurements Over Time (TrendPlot™)

Use the TrendPlot™ function to plot a graph of measurements as a function of time. When simultaneously plotting two readings, the screen area is split into two sections of four divisions each. When simultaneously plotting three or four readings, the screen area is split into th ree or four sections of two divisions each.

To start a trend plot, do the following:

1. Make an automatic measurement. The following steps will then plot that information. (See page 2-15, Automatic Measurements.)

2. Select RECORDER REPLAY.. from the Acquire button menu.

3. Select TREND PLOT.

NOTE. If autoranging is not on, you will be asked if you would like to turn it on

before plotting. Select YES if you expect wide changes to the input signal.

5. Observe that the word RECORDING is showing in the right top portion of the display screen. From t he menu that appears, you can select a reference (Time of Day or From Start) from the OPTIONS.. menu. You can also select to view all data in memory (VIEW ALL) or just the twelve most recently recorded divisions (NORMAL).

6. Select STOP under the RECORDER menu item to stop plotting.

7. Observe that the recorded time from start appears at the bottom of the display

screen. The present reading appears on the top of the display screen. The

THS3000 Series Oscilloscopes User Manual 3–1

Recorder Functions

following disp (See Figure 3-2.)

NOTE. Read more about analyzing waveform using cursors. (See page 3-9.)

8. To turn off the TrendPlot™ display, select EXIT RECORDER.

lay shows a trend plot with cursors enabled for measurement.

Figure 3-2: TrendPlot™ measurement

The instrument continuously records the digital readings of the measurements and

ays these as a graph. The TrendPlot™ graph moves from right to left like

displ a paper chart recorder.

the instrument is in automatic mode, automatic vertical scaling is used

When to ﬁtthegraphonthescreen.

NOTE. Whentherecordermemoryisfull,anautomatic compression algorithm is

used to compress all samples into half of the memory without loss of transients. The other half of the recorder memory is free again to continue recording.

3–2 THS3000 Series Oscilloscopes User Manual

Recorder Functions

Record Wavefo

Start Scope Roll Mode

rmsInDeepMemory(ScopeRollMode)

The SCOPE ROLL MODE function logs a long waveform of each active input. Use this function to monitor waveforms such as motion control signals or the power-on eve fast transients are captured. Because of the deep memory, recording can be done for more than one day. This function is similar to the roll mode in many d igital sampling oscilloscopes, but has deeper memory and better functionality.

To record the channel 1 and channel 2 waveform, do the following:

1. Apply sig

2. Select RECORDER REPLAY.. from the Acquire button menu.

3. Select SCOPE ROLL MODE.

4. The waveform moves across the screen from right to left like on a normal

chart recorder. Observe that the screen displays the time from start at the top and the status at the bottom of the screen, which includes the time/div setting and th

5. Press the function button under the RECORDER menu item and select STOP t

nt of an Uninterruptable Power Supply (UPS). During recording,

nals to the channel 1 and channel 2 inputs.

e total timespan that ﬁts the memory. (See Figure 3-3.)

ostoprecordingwhenyouareready.

Figure 3-3: Recording waveforms using Scope Roll Mode

THS3000 Series Oscilloscopes User Manual 3–3

Recorder Functions

Use Single Sweep Mode

UseTriggeringtoStartor

Stop Scope Roll Mode

You can use the r when the deep memory is full. To activate single sweep mode, do the following:

1. Set up the instrument as in the previous procedure. (See page 3-3, Start Scope Roll Mode.)

2. Select OPTIONS from the SCOPEROLLMODEmenu.

3. Use the right arrow to highlight Single Sweep mode and press the Enter

button.

4. Press the function button under the RECORDER menu item and select RUN to begin recording in single sweep mode.

To record an electrical event that causes a fault, it might be useful to start or stop recording on a trigger signal:

ecorder Single Sweep mode to automatically stop recording

Start on trigger to start recording; recording stops when the deep memory is full.

Stop on trigger to stop recording.

Stop when untriggered to continue recording if a next trigger comes within

1 division in vi

To set up the instrument to start or stop recording on a trigger signal, do the following:

1. Set up the instrument as in the Start Scope Roll Mode procedure. (See page 3-3.)

2. Select OPTIONS from the SCOPEROLLMODEmenu.

3. Use the right arrow to highlight on Trigger mode and press the Enter button.

4. Select on of the conditions from the STARTSINGLESWEEPON TRIGGERING menu.

ew all mode.

3–4 THS3000 Series Oscilloscopes User Manual

Recorder Functions

Samples are con twelve recorded divisions are displayed on the screen. Use View All to display the full memory contents.

NOTE. You can learn more about Single Shot triggering. (See page 3-20.)

tinuously saved in deep memory during recording. The last

THS3000 Series Oscilloscopes User Manual 3–5

Analyze Waveforms

Analyze Wavef

Use Replay

orms

You can u s e t h waveform analyses. These functions can be used with one or more of the primary functions: Acquire, TrendPlot™, or Data Log Replay.

It is possible to combine two or three analysis functions. A typical application using these functions is:

First replay the last screens to ﬁnd the screen of special interest.

Then zoom i

Finally, make measurements using the cursors.

When you are in acquire mode, the instrument automatically stores the 100 most

screens. Records are captured and frozen when you press the Run/Stop

recent button. You can also use the Replay function to store and view signals even if you did not press Run/Stop.

Use the options in the DATA LOG REPLAY menu to review stored screens.

e Replay, Zoom, and Cursors analysis functions to perform detailed

n on the signal event.

Replay an Acquired Screen

To review a speciﬁc stored screen, do the following:

1. Press the Acquire button.

2. Select the RECORDER REPLAY.. menu option.

3. Select DATA LOG REPLAY.

4. Select Next or Previous to scroll through the stored screens until you ﬁnd

the one you want.

5. Observe that the top portion of the DATA LOG REPLAY menu (shown in step 4) displays a replay bar with a screen number and related time stamp. The replay bar represents all 100 stored screens in memory. The represents the picture being displayed on the screen. If the bar is partly white, the memory is not completely ﬁlled with 100 screens.

icon

3–6 THS3000 Series Oscilloscopes User Manual

Analyze Waveforms

Replay All Acquired

Screens

Turn Off the Replay

Function

You can also rep To replay all acquired screens, do the following:

1. Press the Acquire button.

2. Select the RECORDER REPLAY.. menu option.

3. Select DATA LOG REPLAY to view the replay menu.

4. Select Play to start play of all stored screens, from oldest to newest.

NOTE. Once you have selected to play all screens, the instrument will continue

to repeat play until you select Stop or Exit Replay.

5. Select Stop when you come to the screen of interest. You can now use the zoom and cursor functions to study the signal in more detail.

Select EXIT REPLAY to turn off the replay function. A warning notice will appear stating that all replay data will be lost. This means you will not be able to return to access the data again without saving it ﬁrst by pressing the Save button. Select YES.

lay all of the stored screens in sequence, from oldest to newest.

Capturing 100 Trigger

Events Automatically

Use Zoom

When you use the instrument in triggered mode, 100 trigger event screens are captured. By combining the trigger possibilities with the capability of capturing 100 screens for later replay, you can leave the instrument unattended to capture intermittent signal anomalies. This way you could use Pulse Triggering to trigger and capture 100 intermittent glitches or you could capture 100 UPS startups.

NOTE. You can read more about triggering and trigger setup. (See page 3-14,

Trigger Functions.)

Use the Zoom function to obtain a more detailed view of a waveform. To zoom in on a waveform, do the following:

1. Press the Zoom

2. Press the up and down arrow keys (or horizontal Scale key) to enlarge

(decrease the time/div) and shrink (increase the time/div) the waveform, respectively. Press the right and left arrow keys (or the horizontal Position

button.

THS3000 Series Oscilloscopes User Manual 3–7

Analyze Waveforms

key) to move the shows the position of the zoomed part in relation to the total waveform.

Observe that the bottom of the waveform area displays the zoom ratio, position bar, and time/div. The zoom range depends on the amount of data samples stored in memory. (See Figure 3-4.)

waveform to the right or left of the screen. The position bar

Figure 3-4: Zooming in on a Waveform

NOTE. To turn off the Zoom function, select OFF under the ZOOM item of the

menu.

3–8 THS3000 Series Oscilloscopes User Manual

Use Cursors

Analyze Waveforms

Cursors allow you to make precise digital measurements on waveforms. This can be done on live waveforms, recorded waveforms, and on saved waveforms.

Use Horizont

al Cursors on

a Waveform

To use the cursors for a voltage measurement, do the following:

1. Press the Cursors button

2. Select the = cursors. The cursor type options are:

׀ :Singlev

׀׀ : Two vertical cursors

= : Two horizontal cursors

: Rise time cursor

: Fall time cursor

3. Press the function key under the MOVE menu item to highlight the upper cursor (if it is not already highlighted).

4. Use t

5. Press the function key under the MOVE menu item to highlight the lower

6. Use the up and down arrow keys to position the lower cursor.

he up and down arrow keys to position the upper cursor.

or.

curs

ertical cursor

TE. Even when the key labels are not displayed at the bottom of the screen,

you still can use the arrow keys. This allows full control of both cursors while having a full screen view.

7. Use the cursors to measure the amplitude, high or low value, or overshoot of the waveform.

This screen shows the voltage difference between the two cursors and the voltage at the cursors. (See Figure 3-5.)

THS3000 Series Oscilloscopes User Manual 3–9

Analyze Waveforms

Figure 3-5: Voltage measurement with horizontal cursors

Use Vert

ical Cursors on a

Waveform

To use the cursors for a time measurement (T, 1/T), for a mVs-mAs-mWs measurement, or for an RMS measurement of the trace section between the cursors, do the following:

1. Press the Cursors button

2. Select the ׀׀ cursors. The cursor type options are:

׀ : Single vertical cursor

׀׀ : Two vertical cursors

= :Tw

o horizontal cursors

: Rise time cursor

: Fall time cursor

3–10 THS3000 Series Oscilloscopes User Manual

Analyze Waveforms

3. Select T (time)

T: time

1/T: 1/time or frequency

mVs: Millivolts per second

NOTE. This option varies depending on the probe type you have selected in

the channel button Probe menu. Other options include mAs (milliamperes per second are using the Mathematical function x and the probe type for one channel is voltage and another channel is current. If you are taking cursor measurements while using mathematical functions +, -,orx, no measurement will be available if the input 1 and 2 measurement units are different. If you are using the mathematical function FFT, you must activate cursors from the Cursor button m can read more about using the Mathematical functions. (See page 2-24.)

4. Press the function key under the MOVE menu item to highlight the left cursor (if it

enu. You can then turn cursors on and off from the FFT menu. You

RMS:Ro

is not already highlighted).

for the measurement type. The measurement type options are:

) for current probes, and mWs (milliwatts per second) when you

ot mean squared

5. Use t

6. Press the function key under the MOVE menu item to highlight the right

7. Use the left and right arrow keys to position the right cursor.

you still can use the arrow keys. This allows full control of both cursors while having a full screen view.

8. Use the cursors to measure the time and voltage differences.

This screen shows the time difference between the two cursors and the voltage difference between the two markers. (See Figure 3-6.)

he left and right arrow keys to position the left cursor.

sor.

cur

TE. Even when the key labels are not displayed at the bottom of the screen,

THS3000 Series Oscilloscopes User Manual 3–11

Analyze Waveforms

Figure 3-6: Time measurement with vertical cursors

UseRisetimeorFalltime

Cursors on a Waveform

The steps to measure either rise time or fall time are similar. To measure rise time using cursors, do the following:

1. Press the Cursors button

2. Select the

׀ : Single vertical cursor

׀׀ : Two vertical cursors

= : Two horizontal cursors

: Rise time cursor

: Fall time cursor

3. If MANUAL is not already highlighted, press the function key under the AUTO/MANUAL menu item to highlight MANUAL.

NOTE. Select AUTO to automatically complete steps 4 through 7.

4. Press the function key under the MOVE menu item to highlight the upper cursor (if it is not already highlighted).

cursor. The cursor type options are:

5. Use the up and down a rrow keys to position the upper cursor to 100% of the trace height. A marker is shown at 90%.

3–12 THS3000 Series Oscilloscopes User Manual

Analyze Waveforms

6. Press the funct cursor.

7. Use the up and d trace height. A marker is shown at 10%.

NOTE. Even when the key labels are not displayed at the bottom of the screen,

you still can use the arrow keys. This allows full control of both cursors while having a full screen view.

8. Use the cursors to measure the amplitude, high or low value, or overshoot of the waveform.

This screen shows the risetime measurement from 10%-90% of the trace amplitude. (See Figure 3-7.)

ion key under the MOVE menu item to highlight the lower

own arrow keys to position the lower cursor to 0% of the

ure 3-7: Risetime measurement using cursors

Fig

THS3000 Series Oscilloscopes User Manual 3–13

Trigger Functions

About this Chapter

Trigger Event

Trigger Modes

This chapter provides an introduction to the trigger functions of the instrument. Triggering tells the instrument when to begin displaying the waveform. You can use fully automatic triggering, take control of one or more main trigger functions, or you can use dedicated trigger functions to capture special waveforms.

The trigger event establishes the time-reference point in the waveform record. All waveform record data is located in time with respect to that point. The instrument continuously acquires and retains enough sample points to ﬁll the pretrigger portion of the waveform record. That is the part of the waveform that is displayed before, or to the left of, the triggering event on screen. When a trigger event occurs, the instrument is acquiring samples to build the posttrigger portion of the waveform record, that is, the part displayed after or to the right of the trigger event. After a trigger is recognized, the instrument will not accept another trigger until the acquisition is complete.

The trigger mode determines how the instrument behaves in the absence of a trigger event. You can use the following settings for updating the trigger condition by pressing the Tri gge r button and then selecting TRIGGER OPTIONS and then TRIGGER CONDITIONS.

Automatic Auto Level trigger mode enables the instrument to set the trigger level automatically and track with changes in signal amplitude.

Normal trigger mode enables the instrument to acquire a waveform only when it is triggered. If no trigger occurs, the last waveform record acquired remains on the display. If no last waveform exists, no waveform is displayed.

Auto trigger m ode enables the instrument to acquire a waveform even if a trigger does not occur. Auto mode u is started, and the pretrigger information is obtained. If a trigger event is not detected before the timer times out, the instrument forces a trigger. The length of time it waits for a trigger event depends on the time base setting.

Auto mode, when forcing triggers in the absence of valid triggering events, does not synchronize the waveform on the display. T he waveform will appear to move across the screen. If valid triggers occur, the display will become stable.

Single Shot trigger mode allows you to set the instrument to capture (an stop) only one trigger event by pressing the front panel Single button. You can also stop single shot triggering by selecting a different trigger mode in the Trigger > TRIGGER OPTIONS > Trigger Conditions menu.

Read the Getting Started section for a complete description of the Trigger button menu. (See page 1-2, Front Panel Navigation.)

ses a timer that starts when the acquisition

3–14 THS3000 Series Oscilloscopes User Manual

Trigger Functions

Trigger Filter

Trigger ﬁlteri

ng determines what part of the signal is passed to the trigger circuit.

Edge triggering can use both available ﬁlter type s: Noise Reject and HF Reject.

Following are

some typical trigger applications:

Use the AutoRange™ function to have full automatic triggering and stable display of m

ost waveforms.

If the signal is unstable or has a very low frequency, you can control the trigger lev

el, slope, and trigger delay for a better view of the signal. (See

next section.)

For dedica

ted applications, use one of the three manual trigger functions:

Edge triggering

Video triggering

Pulse Width triggering

Choose a Trigger Type

You can select from the following trigger types:

Table 3-1: Trigger types

Trigger type Trigger conditions

Edge

Pulse width Trigger on pulses that are less than, greater than,

Trigger on a rising, falling, or either rising or falling edges, as deﬁned by the slope control. Filter choices are HF Reject and Noise Reject.

Edge triggers are the simplest and most commonly used trigger type, with both analog and digital signals. An edge trigger event occurs when the trigger source passes through a speciﬁed voltage level in the speciﬁed direction.

equal to, or not equal to a speciﬁed time. You can trigger on positive or negative pulses. Pulse width triggers are primarily used on digital signals.

THS3000 Series Oscilloscopes User Manual 3–15

Trigger Functions

Table 3-1: Trigger types (cont.)

Trigger type Trigger conditions

Video

Rise/Fall time Trigger on rise and fall times. Trigger on pulse

Trigger on speciﬁed ﬁelds or lines of a composite video signal. Only composite signal formats are supported.

Trigger on NTSC, PAL, PALPIus, SECAM, or non interlaced signals.

edges that traverse between two thresholds at faster or slower rates than the speciﬁed time.

pulse edges as positive (

Specify

) or either ( ).

(

) or negative

Set Trigger L evel and Slope

The AutoRange™ function enables hands-off triggering to display complex unknow

n signals. To manually optimize trigger level and slope, do the following:

1. Press the Autoset button to perform an auto set. When the process is ete, RUN will appear at the top right of the display screen. This will

compl ensure a stable display of most any signal.

2. Pres

stheTrigger button.

3. Select to trigger on either the positive slope or negative slope of the chosen

eform. If you select dual slope triggering (

wav

) the instrument triggers on

both the positive slope and negative slope.

4. If MANUAL is not already highlighted, press the function key under that

menu item to highlight it.

5. Adjust the trigger level using the Trigger Level buttons.

3–16 THS3000 Series Oscilloscopes User Manual

Figure 3-8: Screen with all trigger information

Trigger Functions

rigger Delay or

Set T

Pretrigger

In the following screen, observe the trigger icon position, trigger level, and slope.

At the bottom of the screen the trigger parameters are displayed. For example,

means that channel 1 is used as the trigger source with a positive slope.

When a valid trigger signal is found, the trigger button will be lit and the trigger parameters appear in white.

When no trigger is found, the trigger parameters appear in gray, and the button backlight will be off.

You can begin to display the waveform some time before or after the trigger point is detected using pretrigger (negative delay) or trigger delay, respectively. Initially, you will see a h alf screen (6 divisions) of negative delay.

Set trigger delay. Hold down the horizontal Position left button until the trigger icon moves to the new trigger position and changes to include arrows, like this:

. This icon indicates that you have selected a trigger delay. Moving the trigger icon to the right on the display gives you a pretrigger view. This allows you to see what happened before the trigger event, or what caused the trigger.

In case of a trigger delay, the status at the bottom of the display screen will change to include an arrow denoting the delay. For example:

that indicates the trigger

This means that channel 1 is used as the trigger source with a positive slope. The

9.20 ms indicates the (positive) delay between trigger point and waveform display.

THS3000 Series Oscilloscopes User Manual 3–17

Trigger Functions

Set Automatic Trigger

When a valid tri parameters appear in white.

When no trigge backlight will be off.

The followi example of a pretrigger view of 8 divisions (bottom). (See Figure 3-9.)

Figure 3-9: Trigger delay or pretrigger view

In the trigger menu, you can change settings for automatic triggering as follows:

1. Press t

gger signal is found, the trigger button will be lit and the trigger

r is found, the trigger parameters appear in gray, and the button

ng image shows an example of a trigger delay of 500 ms (top) and an

he Trigger button.

2. Select TRIGGER OPTIONS from the menu.

3. Select Automatic Auto Level.

4. Select the trigger threshold: > 15 Hz or > 1 Hz. If the frequency range of the

automatic triggering is set to >15 Hz, the Autoset function responds more quickly because the instrument is instructed not to analyze low frequency signal components. However, when you measure frequencies lower than

Hz, you need to select > 1 Hz to analyze low frequency components for

15 automatic triggering.

3–18 THS3000 Series Oscilloscopes User Manual

5. Exit the menu.

Trigger Functions

Trigger on Edges

If the signal is unstable, complex, or has a very low frequency, use edge triggering to obtain ful waveform, do the following:

1. Press the Trigger button.

2. Select TRIGGER OPTIONS.

3. Select Trigger Conditions.

4. Select one of the following. In most cases, it is advised to use the Auto mode:

5. Select Off for the Trigger Filter and press the Enter button.

l manual trigger control. To trigger on the rising edge of the Ch 1

Auto: the instrument will update the screen even if there are no triggers.

A trace always appears on the scree n.

Normal: the instrument needs a trigger to display a waveform. Use this

mode to update the screen only when valid triggers occur.

Single Shot: the instrument waits for a trigger. After receiving a trigger,

the waveform is displayed and the instrument stops acquisition until the Single button or Run/Stop button is pressed. The single shot trigger is enabledbypressingtheSingle button or from the Tr igg er > TRIGGER

OPTIONS > Trigger Conditions menu.

6. The menu that now appears at the bottom of the display screen allows you to

select speciﬁc edge trigger settings: trigger channel, slope, and level. Adjust these settings as desired.

THS3000 Series Oscilloscopes User Manual 3–19

Trigger Functions

Trigger on nois

noisy waveforms, you can use a trigger ﬁlter, as follows:

1. Press the Trig

2. Select TRIGGER OPTIONS.

3. Select Trigger Conditions.

4. Select a trigger ﬁlter:

Noise Reject: an increased trigger gap will be applied

HF Reject: HF noise on the (internal) trigger signal will be suppressed

NOTE. You can also smooth noisy waveforms without changing bandwidth. (See

page 2-19, Smooth a Waveform With Averaging.)

Single shot trigger. To make a single shot measurement, do the following:

1. Press the Trigger button.

2. Select

3. Select Trigger Conditions.

y waveforms. To reduce jitter on the screen when triggering on

ger button.

TRIGGER OPTIONS.

4. Sel

5. Press the Single button to set the instrument to trigger again. The word RUN

3–20 THS3000 Series Oscilloscopes User Manual

ect Single Shot.ThewordSINGLE will appear in the top right portion of the display screen indicating that the instrument is waiting for a trigger. As soon as it receives a trigger, the waveform is displayed and the instrument is set to stop. This is indicated by the word STOP in the top right portion of the screen. (See Figure 3-10.)

will appear in the top right portion of the screen when the instrument is set trigger again.

Figure 3-10: Making a single shot measurement

Trigger Functions

NOTE. Th

Replay function to look at all the stored single shots. (See page 3-6, Use Replay.)

N-Even

n-event burst waveforms. Each next trigger is generated after the waveform has crossed the trigger level N times in the direction that complies with the selected trigger slope.

To select N-Event triggering, do the following:

1. Press the Trigger button.

2. Sel

3. Select Trigger Conditions.

e instrument stores all single shots in the replay memory. Use the

t trigger. N-Event triggering enables you to create a stable picture of

ect TRIGGER OPTIONS.

elect Normal or Auto for update, check that the trigger ﬁlter is set to Off,

4.S

and then select On for the NEvent.

THS3000 Series Oscilloscopes User Manual 3–21

Trigger Functions

5. Press the funct right and left arrow keys to select the number of events.

6. Press the Tr igg er Le vel buttons to adjust the trigger level.

This screen

shows an N-Event trigger in which N=3. (See Figure 3-11.)

ion button under the NEVENT menu item and then use the

Trigger On Video Signals

Figure 3-11: N-Event triggering

To trigger on a video signal, ﬁrst select the standard of the video signal you are going to measure, as follows:

1. Press the Trigger button.

2. Sel

3. Select Video on and press the Enter button.

4. Select a video standard, for example NTSC, and the polarity. Select positive

ect TRIGGER OPTIONS.

polarity for video signals with negative going sync pulses. If you select

n-interlaced, a scan rate menu will appear.

3–22 THS3000 Series Oscilloscopes User Manual

Trigger Functions

5. Adjust trigger video settings as needed in the menu that appears. For example, to trigger on either the ﬁrst half of a frame (Field 1, odd) or the second half of a frame (Field 2, even), select that ﬁeld from the FIELD menu and the signal part of that ﬁeld will be displayed. (See Figure 3-12.)

Select ALL LINES to trigger on all line synchronization pulses (horizontal synchronization). The signal of one line is displayed on the screen and the screen is updated with the signal of the next line immediately after the instrument triggers on the horizontal synchronization pulse.

To view a speciﬁc video line in more detail, you can select the line number by pressing the function button under the LINE NR. menu and then using the up and down arrow keys to select the line number. The signal of the selected line will display on the screen. The screen will be continuously updated with the signal of that line.

Figure 3-12: Trigger on NTSC video signal ﬁeld 1

Trigger On Pulses

THS3000 Series Oscilloscopes User Manual 3–23

Use pulse width triggering to isolate and display speciﬁc pulses that you can qualify by time, such as glitches, missing pulses, bursts, or signal dropouts.

Trigger Functions

Detect narrow p

shorter than 5 ms, do the following:

1. Press the Trig

2. Select TRIGGER OPTIONS.

3. Select Pulse Width on and press the Enter button.

4. Select the positive pulse icon (

5. Select the =t (±10%) condition.

6. Select On Trigger for update. The instrument is now prepared to trigger on

narrow pulses only. A new menu will appear from which you can further deﬁne settings.

In this screen, the pulse width was set to 4.80 μs. All positive pulses equal to

4.80 μs are displayed. (See Figure 3-13.)

ulses. To set the instrument to trigger on narrow positive pulses

ger button.

gure 3-13: Pulse width triggering

NOTE. The instrument stores all triggered screens in the replay memory. For

example, if you set up your triggering for glitches, you can capture 100 glitches with time stamps. Read more in the Replay section. (See page 3-6, Use Replay.)

3–24 THS3000 Series Oscilloscopes User Manual

Save and Recall

Save and Recal

TheSaveandR you to do the following:

Save screen memory. The instrument has 15 ‘screen and setup’ memories, 2 ‘record and setup’ memories, and 1 ‘screen image’ memory. (See Table 3-2.)

Save and recall up to 256 screens and setups to a USB memory device.

Name saved

Recall screens and recordings to analyze the screen image at a later date.

Recall a setup to continue a m easurement with the recalled operating conﬁguration.

NOTE. S

aved data are stored in non-volatile Flash memory. Not saved instrument data are stored in RAM memory and will be kept at least 30 seconds when the battery is removed when no power is supplied through the power adapter.

Table 3-2: Internal memory

ecall functions, both accessed from the Save button menu, allow

s and setups to internal memory and recall them again from

screens and setups according to your own preferences.

Mode Memory locations

30x 10x 9x

SCOPE ROLL MODE

DATA LOG RECORD

TREND PLOT

n persistence mode the most recently written trace will be saved, not all

Setup + 1 screen Setup + 100

—

replay screens

Setup + record data

Setup + trend plot data

Screen image

persistence traces.

n the displayed ﬁle list of stored screens and setups the following symbols are

I used:

setup + 1 screen

setup + replay screens/record data

setup + trendplot data

screen image (image

X.bmp)

THS3000 Series Oscilloscopes User Manual 3–25

Save and Recall

Save Screens with

Associated Setups

To save a screen

1. Press the Save button. Once the menu appears, the display screen will be frozen.

2. Select SAVE....

3. Select the target memory: INT (internal memory) or USB (USB device).

Observe the number of available and used memory locations.

4. Select Screen + Setup and press the Enter button.

6. Select EDIT NAME if you want to rename the ﬁle from SCOPE 1.

+ setup, do the following:

7. Use the arrow keys to select a letter, number, or character. Use the function keys under PREV # and NEXT # to move the cursor to the next letter in the name to change that letter.

8. Select NAME OK to save the new name and return to the previous menu.

9. Observe that the ﬁle name and OK SAVE are selected (black highlighted). Press the Enter button to save the screen + setup.

10. Press the Run/Stop buttontoresumemeasurements.

3–26 THS3000 Series Oscilloscopes User Manual

Save and Recall

Save Screens in .bmp

Format (Print Screen)

What to do when a

available, a m essage pops up that proposes to you to overwrite the oldest data set. Do one of the following:

If you do not want to overwrite the oldest data set, press the function 3 button (NO).

If you want to overwrite the oldest data set, press the function 4 button (YES).

NOTE. The record + setup memory locations store more than just what is visible

on the screen. In TrendPlot or Scope Record mode, the full recording is saved. In scope mode you can save all 100 replay screens in a single record + setup memory location. You can see what you can store for the various instrument modes. (See Table 3-2.)

To save a TrendPlot press STOP ﬁrst.

1. Press the Save button. Once the menu appears, the display screen will be frozen.

2. Press the function 3 button under the camera icon. The ﬁle is saved using a ﬁxed name (IMAGE) and a serial number, for example IMAGE004.bmp.

ll memories are in use. If no free memory locations are

Delete Screens with

Associated Setups

NOTE. If no free memory locations are available, a message pops up that proposes

to you to overwrite the oldest data set. Do one of the following:

If you do not want to overwrite the oldest data set, press the function 3 button (NO).

If you want to overwrite the oldest d a

3. Select FILE OPTIONS... to view the saved .bmp ﬁle.

4. Press the Run/Stop button to resume measurements.

To delete a screen and associated setup, do the following:

1. Press the Save button. Once the menu appears, the display screen will be frozen.

2. Select FILE OPTIONS....

3. Select the target memory: INT (internal memory) or USB (USB device).

ta set, press the function 4 button (YES).

THS3000 Series Oscilloscopes User Manual 3–27

Save and Recall

4. Use the down arr

5. Press the right arrow to move to the ﬁle name list, and then use the down

arrow key to hi

6. Press the Enter button.

ow key to highlight DELETE.

ghlight the ﬁle you want to delete.

Recall Screens with

Associated Setups

7. A message will appear asking if you want to delete the selected ﬁle. Select YES to delete the ﬁle. Select NO to return to the ﬁle list menu.

8. After the item is deleted, the ﬁle list menu will be displayed again. Observe

that the ﬁle you chose to delete is no longer listed. Select CLOSE to exit the menu.

9. Press the Run/Stop buttontoresumemeasurements.

ecall a screen + setup, do the following:

To r

1. Press the Save button. Once the menu appears, the display screen will be

zen.

fro

2. Select RECALL.

3. Select the target memory: INT (internal memory) or USB (USB device).

3–28 THS3000 Series Oscilloscopes User Manual

Save and Recall

4. Use the up or dow

5. Press the up and down arrow keys to select the ﬁle you want to recall and then select VIEW.

6. A message will appear asking if you want to continue to view mode, as data

on the display screen will be lost. Select YES to view the saved ﬁle.

n arrow key to highlight DATA and press the Enter button.

all a Setup

Rec

Conﬁguration

7. Observe that the recalled waveform is displayed and that STOP appears on the screen.

8. Press the Run/Stop button to exit view mode and resume measurements.

NOTE. Learn about how to recall a screen as a reference waveform to compare it

to measured waveform. (See page 2-28, Compare Waveforms.)

To recall a setup conﬁguration, do the following:

1. Press the Save button. Once the menu appears, the display screen will be frozen.

2. Select RECALL.

3. Select the target memory: INT (internal memory) or USB (USB device).

4. Use the up or down arrow key to highlight SETUP and press the Enter button.

5. Press the up and down arrow keys to select the ﬁle you want to recall and

then select VIEW.

THS3000 Series Oscilloscopes User Manual 3–29

Save and Recall

View Stored Screens

6. A message will a on the display screen will be lost. Select YES to recall the selected setup.

7. Observe that t screen.

8. Press the Ru the recalled operating conﬁguration.

To scroll through the memories while looking at the stored screens, do the following

1. Press the Save button. Once the menu appears, the display screen will be

2. Select RECALL.

3. Select the target memory: INT (internal memory) or USB (USB device).

4. Press the Enter button.

5. Highlight any ﬁle.

frozen.

ppear asking if you want to continue to view mode, as data

he recalled setup is displayed and that STOP appears on the

n/Stop button to exit view mode and resume measurements in

6. Select VIEW.

7. Ames

8. Use the up and down arrow keys to scroll through all stored screens.

9. Select the function 3 button to save the screen to internal memory or a USB

10. Press the Run/Stop button to exit view mode and resume measurements.

NOTE. The replay screens of a saved record + setup cannot be viewed while the

instrument is in VIEW mode. Only the screen at the instant of saving can be reviewed in this way. To see all replay screens, recall them from memory using the RECALL option. (See page 3-28, Recall Screens with Associated Setups.)

sage will appear asking if you want to continue to view mode, as data on the display screen will be lost. Select YES to view the ﬁle and open the viewer menu.

device (if connected).

3–30 THS3000 Series Oscilloscopes User Manual

Save and Recall

Rename S tored Screens

and Setup Files

To re name a stor

1. Press the Save button. Once the menu appears, the display screen will be frozen.

2. Select FILE OPTIONS....

3. Select the target memory: INT (internal memory) or USB (USB device).

4. Use the down arrow key to highlight RENAME.

5. Press the Enter button.

6. Use the down arrow key to highlight the ﬁle you want to rename, and then

press the Enter button.

ed screen + setup ﬁle, do the following:

7. Use the arrow keys to select a letter, number, or character. Use the function keys under PREV # and NEXT # to move the cursor to the next letter in the name to change that letter.

8. Select NAME OK to save the new name and return to the previous menu.

9. Press the Run/Stop button to exit the Save menu and resume measurements.

THS3000 Series Oscilloscopes User Manual 3–31

Save and Recall

Copy or Move Stored

Screens and Setup Files

You can copy or m USB device to internal memory by doing the following:

1. Press the Save frozen.

2. Select FILE

3. Select the target memory: INT (internal memory) or USB (USB device).

4. Use the down arrow key to highlight COPY or MOVE.

NOTE. When you select to move a ﬁle, a copy of that ﬁle will be made and saved

to the alt copy a ﬁle, the source ﬁle will remain in the same location and a copy will be saved to the alternate location.

5. Use the down arrow key to highlight the ﬁleyouwanttocopyormove,and

ernate location and the source ﬁle will be deleted. When you select to

Press the Enter button.

then press the Enter button.

ove a ﬁle from internal memory to a USB device or from a

button. Once the menu appears, the display screen will be

OPTIONS....

6. When the copy or move process is complete, the menu will reappear and you

ill see the moved copy is moved or the copied ﬁle is now in both memory

w locations.

7. Press the Run/Stop buttontoexittheSave menu and resume measurements.

3–32 THS3000 Series Oscilloscopes User Manual

Tektronix THS3014, THS3024 Primary User

Specifications and Main Features

Frequently Asked Questions

User Manual