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RIGOL

User’s Guide

DS2000A Series Digital Oscilloscope

Sept. 2013

RIGOL Technologies, Inc.

RIGOL

Guaranty and Declaration

Trademark Information

RIGOL is a registered trademark of RIGOL Technologies, Inc.

Publication Number

UGA16102-1112

Notices

 RIGOL products are protected by patent law in and outside of P.R.C.  RIGOL reserves the right to modify or change parts of or all the specifications

and pricing policies at company’s sole decision.

 Information in this publication replaces all previously corresponding material.  RIGOL shall not be liable f or losses caused by either inc idental or consequential

in connection with the furnishing, use or performance of this manual as well as any information contained.

 Any part of this document is forbidden to be copied or photocopied or

rearranged without prior written approval of RIGOL.

Product Certification

RIGOL guar antees this pr oduct confo rms to the national and i ndus trial s tandar ds in China as well as the ISO9001:2008 standard and the ISO14001:2004 standard. Other international standard conformance cert ification is in progress.

If you have any problem or requirement when using our products or this manual, please contact RIGOL. E-mail: service@rigol.com Websites: www.rigol.com

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Safety Requirement

General Safety Summary

Please review the following safety precautions carefully before putting the instrument into operation so as to avoid any personal injury or damage to the instrument and any p roduct connec ted to it. To prevent potential hazards, p lease use the instrument only specified by this manual.

Use Proper Power Cord.

Only the power cord designed for the instrument and authorized for use within the local country could be used.

Ground The Instrument.

The instrument is grounded through the Protective Earth lead of the power cord. To avoid electric shock, it is essent ial to connect the earth termina l of power c ord t o the Protective Earth terminal before any inputs or outputs.

Connect the Probe Correctly.

If a probe is used, do not connect the ground lead to high voltage since it has the isobaric electric potential as ground.

Observe All Terminal Ratings.

To avoid fire or s hock ha z ard , obs erve all r atings and m arkers on the i nst rument and check your manual for more information about ratings before connecting.

Use Proper Overvoltage Protection.

Make sure that no overvoltage (such as that caused by a thunderstorm) can reach the product, or else the operator might expose to danger of electrical shock.

Do Not Operate Without Covers.

Do not operate the instrument with covers or panels removed.

Do Not Insert Anything into the Holes of Fan.

Do not insert anything into the holes of the fan to avoid damaging the instrument.

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III

Use Proper Fuse.

Please use the specif ied fuses.

Avoid Circuit or Wire Exposure.

Do not touch exposed junctions and components when the unit is powered.

Do Not Operate With Suspected Failures.

If you suspect damage occurs to the instrument, have it inspected by qualified service personnel before further operations. Any maintenance, adjustment or replacement especial ly to circuits or accessories must be performed by RIGOL authorized personnel.

Keep Well Ventilation.

Inadequate ventilation may cause increasing of temperature or damages to the device. So please keep well ventilated and inspect the intake and fan regularly.

Do Not Operate in Wet Conditions.

In order to av oid s hort circuiting to the inte rior of the device or electric shock, please do not operate in a humid environment.

Do Not Operate in an Explosive Atmosphere.

In order to avoid damages to the device or personal injuries, it is important to operate the device away from an explosive atmosphere.

Keep Product Surfaces Clean an d Dry .

To avoid the influence of dust and/or moisture in air, please keep the surface of device clean and dry.

Electrostatic Prevention.

Operate in an electrostatic discharge protective area environment to avoid damages induced by static discharges. Always ground both the internal and external conductors of the cable t o rel ea se static before connecting.

Proper Use of Battery.

If a battery is supplied, it must not be exposed to high temperature or in contact with fire. Keep it out of the reach of children. Improper change of battery (note: lithium battery) may cause explosion. Use RIGOL specified battery only.

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DANGER

CAUTION

indicates potential damage to the instrument or other property might

Hazardous

Safety

Protective

Chassis

Test

Handling Safety.

Please handle with care during transportation to avoid damages to buttons, knob interfaces and other parts on the panels.

Safety Terms and Symbols

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

WARNING

Warning statements indicate the conditions or practices that could result in injury or loss of life.

CAUTION

Caution statements indicate the c onditions or p rac tices t hat could res ult in damage to this product or other property.

Terms Used on the Product. These terms may appear on the Product:

indicates an injury or hazard may immediately happen.

WARNING

Symbols Used on the Product. These symbols may appear on the product:

indicates an injury or hazard may be accessible potentially.

occur.

Voltage

Warning

Earth Terminal

Ground

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Allgemeine Sicherheits Informationen

Überprüfen Sie diefolgenden Sicherheitshinweise sorgfältigumPersonenschädenoderSchäden am Gerätundan damit verbundenen weiteren Gerätenzu vermeiden.Zur Vermeidung vonGefahren, nutzen Sie bitte das Gerät nur so, wiein diesem Handbuchangegeben.

Um Feuer oder Verletzungen zu vermeiden, verwenden Sie ein ordnungsgemäßes Netzkabel.

Verwenden Sie für dieses Gerät nur das für ihr Land zugelassene und genehmigte Netzkabel.

Erden des Gerätes.

Das Gerät ist durch den Schutzleiter im Netzkabel geerdet. Um Gefahren durch elektrischen Schlag zu verme iden, ist es unerläss lich, die Erdung durchzufüh ren. Erst dann dürfen weitere Ein- oder Ausgänge verbunden werden.

Anschluss einesTastkopfes.

Die Erdungsklemmen der Sonden sindauf dem gleichen Spannungspegel des Instruments geerdet. SchließenSie die Erdungsklemmen an keine hohe Spannung an.

Beachten Sie alle Anschlüsse.

Zur Vermeidung von Feuer oder Stromschlag, beachten Sie alle Bemerkungen und Markierungen auf dem Instrument. Befolgen Sie die Bed ienungsanleitung für weitere Informationen, bevor Sie weitere Anschlüsse an das Instrument legen.

Verwenden Sie einen geeigneten Überspannungsschutz

Stellen Sie sicher, daß keinerlei Überspannung (wie z.B. durch Gewitter verursacht) das Gerät erreichen kann. Andernfallsbestehtfür den Anwender die GefahreinesStromschlages.

Nicht ohne Abdeckung einschalten.

Betreiben Sie das Gerät nicht mit entfernten Gehäuse-Abdeckungen.

Betreiben Sie das Gerät nicht geöffnet

Der Betrieb mit offenen oder entfernten Gehäuseteilen ist nicht zulässig. Nichts in entsprechende Öffnungen stecken (Lüfter z.B.)

Passende Sicherung verwenden

Setzen Sie nur die spezifikationsgemäßen Sicherungen ein.

Vermeiden Sie ungeschützte Verbindungen

Berühren Sie keine unisolierten Verbindungen oder Baugruppen, während das Gerät

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in Betrieb ist.

Betreiben Sie das Gerät nic h t i m Fehlerfall

Wenn Sie am Gerät einen Defekt vermuten, sorgen Sie dafür, bevor Sie das Gerät wieder betreiben, dass e ine Untersuc hung durch qua lifiziertes Kund endienstpers onal durchgeführt wird.Jedwede Wartung, Einstellarbeiten oder Austausch von Teilen am Gerät, sowie am Zubehör dürfen nur von RIGOL autorisiertem Personal durchgeführt werden.

Belüftung sicherstellen

Unzureichende Belüftung kann zu Temperaturanstiegen und somit zu thermischen Schäden am Gerät führen. Stellen Sie deswegen die Belüftung sicher und kontrollieren regelmäßig Lüfter und Belüftungsöffnungen.

Nicht in feuc h te r Um g ebung betrei be n

Zur Verm eidung von K urzschluß im G eräteinneren und Stromschlag b etreiben Sie das Gerät bitte niemals in feuchter Umgebung.

Nicht in explosiver Atmosphäre betreiben

Zur Vermeidung von Personen- und Sachschäden ist es unumgänglich, das Gerät ausschließlich fernab jedweder explosiven Atmosphäre zu betreiben.

Geräteoberflächen sauber und trocken halten

Um den Einfluß von Staub und Feuchtigkeit aus der Luft auszuschließen, halten Sie bitte die Geräteoberflächen sauber und trocken.

Schutz gegen elektrostatische Entladung (ESD)

Sorgen Sie für eine elektrostatisch geschützte Umgebung, um somit Schäden und Funktionsstörungen durch ESD zu vermeiden. Erden Sie vor dem Anschluß immer Innen- und Außenleiter d er V erbindungs leitung, um s tatische Aufladung zu e ntladen.

Die richtige Verwendung desAkku.

Wenneine Batterieverwendet wird, vermeiden Sie hohe Temperaturen bzw. Feuer ausgesetzt werden.Bewahren Sie es außerhalbder Reichweitevon Kindern auf.UnsachgemäßeÄnderung derBatterie(Anmerkung:Lithium-Batterie)kann zu einer Explosion führen. VerwendenSie nur von RIGOLangegebenenAkkus.

Sicherer Transport

Transportieren Sie das Gerät sorgfältig (Verpackung!), um Schäden an Bedienelementen, Anschlüssen und anderen Teilen zu vermeiden.

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VII

WARNING

Schäden oder den Tod von Personen zur Folge haben können.

CAUTION

Schäden am Gerät hervorrufen können.

DANGER

weist auf eine Verletzung oder Gefährdung hin, die sofort geschehen kann.

WARNING

weist auf eine V erletzung ode r Gefährdung hin, d ie möglicherweis e nicht sofort geschehen.

CAUTION

bedeutet, dass eine mögliche Beschädigung des Ins truments oder anderer Gegenstände auftreten kann.

Sicherheits Begriffe und Symbole

Begriffe in diesem Guide. Diese Begriffe können in diesem Handbuch auftauchen:

Die Kennzeichnung WARNING beschreibt Gefahrenquellen die leibliche

Die Kennzeichnung Caution (Vorsicht) beschreibt Gefahrenquellen die

Begriffe auf dem Produkt. Diese Bedingungen können auf dem Produkt erscheinen:

Symbole auf dem Produkt. Diese Symbole können auf dem Produkt erscheinen:

GefährlicheS pannung

SicherheitsHinweis

Schutz-erde Gehäusemasse Erde

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VIII

WARNING

Measurement Category

DS2000A series digital oscilloscopes can make measurements in Measurement Category I.

This oscilloscope can only be used for measurements within its specified measurement categories.

Measurement Category Definitions

Measurement category I is for measurements performed on circuits not directly connected to MAINS. Examples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS derived circuits. In the latter case, transient stresses are variable; for that reason, the transient withstand capability of the equipment is made known to the user.

Measurement category II is for measurements performed on circuits directly connected to the low volta ge ins tallation. Exam ples are meas urements on household appliances, portable tools and similar equipment.

Measurement category III is fo r meas urements p erformed in the b uilding ins tallation. Examples are measurements on distribution boards, circuit-breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for industrial use and some other equipment, for example. Stationary motors with permanent connection to the fixed installation.

Measurement category IV is for measurements performed at the source of the low-voltage installation. Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units.

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WARNING

Ventilation Requirement

This oscilloscope uses fan to force cooling. Please make sure that the air intake and exhaust areas are free from obstructions and have free air. When using the oscilloscope in a bench-top or rack setting, provide at least 10 cm clearance beside, above and behind the instrument for adequate ventilation.

Inadequate ventilation may cause temperature increase which would damage the instrument. So please keep the instrument well ventilated during operation and inspect the intake and fan regularly.

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o avoid short circuit i nside the i nstrument or electric shock, p lease d o not

WARNING

Working Environment

Temperature

Operating: 0℃ to +50℃ Non-operating: -40℃ to +70℃

Humidity

0℃ to +30℃: ≤95％ relative humidity +30℃ to +40℃: ≤75％ relative humidity +40℃ to +50℃: ≤45％ relative humidity

WARNING

T operate in humid environment.

Altitude

Operating: less than 3 km Non-operating: less than 15 km

Installation (overvoltage) Category

This product is powered by mains conforming to installation (overvoltage) category II.

Make sure that no overvoltage (such as that caused by thunderbolt) can reach the product, or else the operator might expose to danger of electric shock.

Installation (overvoltage) Category Definitions

Installation (overvoltage) category I refers to signal level which is applicable to equipment measurement terminals connected to the source circuit. In these terminals, precautions are done to limit the transient voltage to the corresponding low level. Installation (overvoltage) category II refers to the local power distribution level which is applicable to equipment connected to the AC line (AC power).

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Pollution Degree

Degree 2

Pollution Degree Definitions

Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has no influence. For example: a clean room or air-conditioned office environment. Pollution degree 2: Normally only dry, non-conductive pollution occurs. Occasionally a temporary conductivity caused by co n de n sati o n may o ccu r. For example: general indoor environment. Pollution degree 3: Conductive pollution occurs, or dry, non-conductive pollution occurs which becomes conductive due to condensation which is expected. For example: Sheltered outdoor environment. Pollution degree 4: Pollution that generates persistent conductivity through conductive dust, rain, or snow. For example: outdoor locations.

Safety Class

Class 1 – Grou n de d Pro duct

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XII

General Care and Cleaning

General Care:

Do not store or leave the instrume nt at places where the instrument will b e exposed to direct sunlight for long periods of time.

Cleaning:

Clean the instrument regularly according to its operating conditions. To clean the exterior surface:

1. Disconnect the instrument from all power sources.

2. Clean the l oose dust on the outs ide of the instrument with a lint- free cl oth (with

mild detergent or water). When cleaning the LCD, ta ke c a re to avoid scarifying it.

CAUTION

To avoid damages to the instrument, do not expose them to corrosive liquids.

WARNING

To avoid injury resulting from short circuit, make sure the instrument is completely dry before reco n n ect in g it to a power source.

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XIII

Environmental Consideratio ns

The following symbol indicates that this product complies with the applicable European Union requirements according to Directives 2002/ 96/EC on waste electrical and electronic equipment (WEEE).

Product End-of-Life Handling

The equipment may contain substances tha t could be harmful to the envi ronm ent or human health. In order to avoid release of suc h substances i nto the environment and harm to human health, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately. Please contact your local authorities for disposal or recycling information.

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XIV

DS2000A Series Overview

DS2000A is a high-performance digital oscillosco pe developed on the basis of the Ultra Vision technique. DS2000A, featuring rather deep memory depth, ultra-wide dynamic range, superb waveform capture rate and all-round trigger functions as well as hardware waveform record function and good display e ffect, is an invaluable debug instrument in various fields (such as communication, cosmonautics, defense, embedded system, computer, research and educa ti o n ) a n d is th e on e w i th the most complete functions and most outstanding specifications among the digital oscilloscopes with lower than 300 MHz bandwidth.

Main feature s:

 300MHz, 200 MHz, 100 MHz and 70 MHz bandwidth.  Ultra Vision technique.  2 GSa/s maximum r eal-time sample rate.  50,000 wfms/s (dots display) waveform captu re rate.  Real-time hardware waveform recording, waveform playback, record open

(constant on) and waveform analysis functions. Up to 65,000 frames of waveform can be recorded.

 56 Mpts maximum memory depth (option) and 14 Mpts standard memory

depth.

 256 degree gray scale display.  Low noise floor, 500 μV/div to 10 V/div ultra-wide vertical dynamic range.  8.0 inches, WVGA (800*480) 160,000 color TFT LCD, with ultra-wide screen,

vivid picture, low power consumption and long service life.

 Adjustable brightness of analog channel waveform.  Auto setting of waveform display (AUTO).  16 kinds of trigger functions including multiple protocol triggers.  Standard parallel decodi ng and multiple serial decoding options.  Auto measurements of 24 waveform parameters and measurement functions

with statistic.

 Precise delayed sweep function.  Built-in FFT function.  Pass/Fail test function.  Multiple waveform math operation functions.  Built-in dual-channel and 25 MHz signal generator function (only applicable to

DS2000A-S).

 Standard configuration inte rfaces: USB Device, USB Host, LAN and GPIB

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(optional).

 Support USB storage device and PictBrige printer.  Conform to LXI-C instrument standards. Enable quick, economic and efficient

creation and reconfiguration of test system.

 Support remote command control.  Embedded help enables easier information access.  Support multiple languages and Chinese/English input.  Novel and delicate industrial design and easier operation.

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XVI

1 Quick Star t

Provide information about preparations introduction of the instrument.

2 To Set the Vertical System

Introduce the functions of the vertical system of the osci lloscope.

3 To Set the Horizontal System

Introduce the functions of the horizontal system of the osci lloscope.

4 To Set the Sample System

Introduce the functions of the sample

5 To Trigger the Oscilloscope

Introduce the trigger mode, trigger coupling,

6 To Make Measurements

Introduce how to make math operation, measurement.

7 Protocol Decoding

Introduce how to decode the input signal using those common protocols.

8 Reference Waveform

Introduce how to compare the input waveform with the reference waveform.

9 Pass/Fail Test

Introduce how to monitor the input signal using the Pass/Fail test.

10 Waveform Record

Introduce how to analyze the input signal using waveform record.

11 Display Control

Introduce how to control the display of the oscilloscope.

12 Signal Source

Introduce how to use the built-in signal generator.

13 Store and Recall

Introduce how to store and recall the oscilloscope.

14 System Function Setting

Introduce how to set the remote interface and system-related functions.

15 Remote Control

Introduce how to control the oscilloscope

16 Troubleshooting

Introduce how to deal with common failures of the oscilloscope.

17 Specifications

Provide the specifications and general specifications of the oscilloscope.

18 Appendix

Provide common information such as options

Document Overview

before using the instrument and a brief

system of the osci lloscope.

trigger holdoff, external trigger and various trigger types of the oscillo scope.

cursor measurement and auto

measurement result and the setting of the

remotely.

and accessories.

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XVII

Logo

Knob

Logo

Knob

Multi-function

Vertical Scale

Navigation

Vertical Position

Horizontal

Trigger Level POSITION

Horizontal

Format Conventions in this Manual:

Front panel key: denoted by the format of “Text Box + Button Name (Bold)”, for example, Storage. Menu softkey: denoted by the format of “Charac te r Shading + Menu Word (Bold)”, for example, Storage. Operation steps: denoted by the arrow “”, for example, Storage  Storage. Cross reference: denoted by the format of “underscore + word (Blue and Bold), for example,

Store and Recall.

Knob:

HORIZONTAL SCALE

Knob Knob

Scale Knob

VERTICAL SCALE VERTICAL

POSITION TRIGGER LEVEL

Knob Knob

Knob

HORIZONTAL

Position Knob

Content Con v entions in this Man ual:

This manual takes DS 2302A -S for example and the d es criptions here ha ve cont ained all the functions and performances of other models. DS2000A series includes the following models:

Model

Analog Bandwidth

Channels

Channels of the Signal Generator

DS2072A 70 MHz 2 -DS2072A-S 70 MHz 2 2 DS2102A 100 MHz

2 -DS2102A-S 100 MHz 2 2 DS2202A 200 MHz 2 -DS2202A-S 200 MHz 2 2 DS2302A 300 MHz 2 -DS2302A-S 300 MHz 2 2

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XVIII

Contents

Guaranty and Declaration ......................................................................... I

Safety Requirement ................................................................................. II

General Safety Summary ............................................................................. II

Safety Terms and Symbo l s .......................................................................... IV

Allgemeine Sicherheits Informationen ........................................................... V

Sicherheits Begriffe und Symbole ............................................................... VII

Measurement Category ............................................................................. VIII

Ventilation Requirement .............................................................................. IX

Working Environment ...................................................................................X

General Care and Cleaning ......................................................................... XII

Environmental Considerations ................................................................... XIII

DS2000A Series Overview .................................................................... XIV

Document Overview ............................................................................. XVI

1 Quick Start ........................................................................................ 1-1

General Inspection .................................................................................... 1-2

Appearance and Dimensions ...................................................................... 1-3

To Prepare the Oscilloscope for Use ............................................................ 1-4

To Adjust the Supporting Legs ............................................................. 1-4

To Connect to Power Supply ................................................................ 1-4

Power-on Inspection ........................................................................... 1-5

To Connect the Probe ......................................................................... 1-5

Function Inspection ............................................................................ 1-6

Probe Compensation ........................................................................... 1-7

Front

Panel Overview ................................................................................. 1-8

Rear Panel Overview ................................................................................ 1-10

Front Panel Function Overview ................................................................. 1-12

VERTICAL ......................................................................................... 1-12

HORIZONTAL ................................................................................... 1-13

TRIGGER .......................................................................................... 1-14

CLEAR .............................................................................................. 1-14

RUN/STOP ........................................................................................ 1-14

SINGLE ............................................................................................ 1-15

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AUTO ............................................................................................... 1-15

Knob ................................................................................................ 1-16

Navigation Knob ............................................................................... 1-16

Menu ............................................................................................... 1-17

Source ............................................................................................. 1-18

Record ............................................................................................. 1-18

Print ................................................................................................ 1-19

User Interface ......................................................................................... 1-20

To Use the Security Lock .......................................................................... 1-24

To Use the Built-in Help System ............................................................... 1-25

2 To Set the Vertical System ................................................................. 2-1

To Enable the Channel ............................................................................... 2-2

Channel Coupling ...................................................................................... 2-3

Bandwidth Limit ........................................................................................ 2-3

Probe Ratio ............................................................................................... 2-4

Input Impedance....................................................................................... 2-4

Waveform Invert ....................................................................................... 2-5

Vertical Sca l e ............................................................................................ 2-5

Vertical Expansion ..................................................................................... 2-6

Amplitude Unit .......................................................................................... 2-6

Channel Label ........................................................................................... 2-7

Delay Calibration ....................................................................................... 2-8

3 To Set the Horizontal System ............................................................. 3-1

Delayed Sweep ......................................................................................... 3-2

Time Base Mode........................................................................................ 3-4

Y-T Mode ............................................................................................ 3-4

X-Y Mode ........................................................................................... 3-4

Roll Mode ........................................................................................... 3-7

Horizontal Scale ........................................................................................ 3-8

Horizontal Reference ................................................................................. 3-9

4 To Set the Sample System .................................................................. 4-1

Acquisition Mode ....................................................................................... 4-2

Normal ............................................................................................... 4-2

Average ............................................................................................. 4-2

Peak Detect ........................................................................................ 4-4

High Resolution .................................................................................. 4-4

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Sample Mode ............................................................................................ 4-5

Sample Rate ............................................................................................. 4-6

Memory Depth .......................................................................................... 4-8

Antialiasing ............................................................................................... 4-9

5 To Trigger the Oscilloscope ............................................................... 5-1

Trigger Source ........................................................................................... 5-2

Trigger Mode ............................................................................................. 5-3

Trigger Coupling ........................................................................................ 5-5

Trigger Holdoff .......................................................................................... 5-6

Noise Rejection ......................................................................................... 5-7

Trigger Type .............................................................................................. 5-8

Edge Trigger ....................................................................................... 5-9

Pulse Tr igger .................................................................................... 5-10

Runt Tr igger ..................................................................................... 5-12

Windows Trigger (Option) ................................................................. 5-14

Nth Edge Trigger (Option) ................................................................. 5-16

Slope Trigger .................................................................................... 5-18

Video Trigger (HDTV Option) ............................................................. 5-21

Pattern Trigger ................................................................................. 5-23

Delay Trigger (Option) ...................................................................... 5-25

TimeOut Trigger (Option) .................................................................. 5-27

Duration Trigger (Option) .................................................................. 5-29

Setup/Hold Trigger ........................................................................... 5-31

RS232 Trigger................................................................................... 5-33

I2C T rigger ....................................................................................... 5-35

SPI Trigger ....................................................................................... 5-38

USB Trigger (Option) ........................................................................ 5-40

Trigger Output Connector ........................................................................ 5-42

6 To Mak e Measurem ents ..................................................................... 6-1

Math Operation ......................................................................................... 6-2

Addition ............................................................................................. 6-2

Substraction ....................................................................................... 6-2

Multiplication ...................................................................................... 6-3

Division .............................................................................................. 6-3

FFT .................................................................................................... 6-4

Logic Operation .................................................................................. 6-7

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XXI

Advanced Operation ........................................................................... 6-9

Auto Measurement .................................................................................. 6-12

Quick Measurement after AUTO ........................................................ 6-12

One-key Measurement of 24 Parameters ........................................... 6-13

Frequency Counter Measurement ...................................................... 6-18

Measurement Setting ........................................................................ 6-19

To Clear the Measurement ................................................................ 6-21

All Measurement ............................................................................... 6-22

Statistic Function .............................................................................. 6-23

Measurement History ........................................................................ 6-24

Cursor Measurement ............................................................................... 6-24

Manual Mode .................................................................................... 6-24

Track Mode ...................................................................................... 6-28

Auto Mode ....................................................................................... 6-31

X-Y Mode ......................................................................................... 6-32

7 Protocol Decoding .............................................................................. 7-1

Parallel Decoding ....................................................................................... 7-2

RS232 Decoding (Option) .......................................................................... 7-5

I2C Decoding (Option) ............................................................................. 7-10

SPI Decoding (Option) ............................................................................. 7-13

8 Reference Waveform ......................................................................... 8-1

To Enable REF Function ............................................................................. 8-2

To Set the Color ........................................................................................ 8-3

To Select REF Source ................................................................................. 8-3

To Save to Internal Memor y ....................................................................... 8-3

To Adjust REF Waveform Display ................................................................ 8-4

To Export to Internal or External Memory ................................................... 8-4

To Import from Internal or External Memory ............................................... 8-4

9 Pass/Fail Test .................................................................................... 9-1

To Enable Pass/Fail Test ............................................................................. 9-2

To Select Source........................................................................................ 9-2

Mask Range .............................................................................................. 9-2

Test and Ouput ......................................................................................... 9-3

To Save the Test Mask ............................................................................... 9-4

To Load the Test Mask ............................................................................... 9-4

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10 Waveform Record .......................................................................... 10-1

Waveform Record .................................................................................... 10-2

Record Constant On ................................................................................ 10-4

Waveform Playback ................................................................................. 10-6

Waveform Analysis .................................................................................. 10-8

Analysis Based on Trace .................................................................. 10-12

Analy sis Based o n Pass/Fail Mask .................................................... 10-13

11 Display Control .............................................................................. 11-1

To Select the Display Type ....................................................................... 11-2

To Set the Persistence Time ..................................................................... 11-3

To Set the Waveform Intensity ................................................................. 11-5

To Set the Screen Grid ............................................................................. 11-5

To Set the Grid Brightness ....................................................................... 11-5

To Set the Menu Display .......................................................................... 11-5

12 Signal Source ................................................................................. 12-1

To Output Basic Waveform ....................................................................... 12-2

To Output Sine ................................................................................. 12-2

To Output Square ............................................................................. 12-4

To Output Ramp Waveform ............................................................... 12-4

To Output Pulse Waveform ................................................................ 12-5

To Output DC ................................................................................... 12-5

To Output Noise ............................................................................... 12-6

To Output Built-in Waveform .................................................................... 12-7

To Output Arbitrary Waveform ............................................................... 12-11

To Select Waveform ........................................................................ 12-13

To Create Waveform ....................................................................... 12-14

To Edit Waveform ........................................................................... 12-16

Modulation ............................................................................................ 12-17

13 Store and Recall ............................................................................ 13-1

Storage System ....................................................................................... 13-2

Storage Type ........................................................................................... 13-3

Internal Storage and Recall ...................................................................... 13-5

External Storage and Recall ..................................................................... 13-7

Disk Management .................................................................................. 13-10

To Select File Type .......................................................................... 13-11

To Create a New File or Folder ........................................................ 13-12

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To Delete a File or Folder ................................................................ 13-15

To Rename a File or Folder .............................................................. 13-16

To Clear the Local Memory .............................................................. 13-16

Factory ................................................................................................. 13-17

14 System Function Setting ................................................................ 14-1

Remote Interface Configuration ............................................................... 14-2

LAN Setting ...................................................................................... 14-2

USB Device ...................................................................................... 14-6

To Set the GPIB Address ................................................................... 14-6

System-related ........................................................................................ 14-7

Sound .............................................................................................. 14-7

Language ......................................................................................... 14-7

System Informat i on .......................................................................... 14-8

Power-off Recall ............................................................................... 14-8

System Time .................................................................................... 14-9

Screen ........................................................................................... 14-10

Self-calibration ............................................................................... 14-11

Aux Output .................................................................................... 14-12

Option Management ....................................................................... 14-13

15 Remote Control .............................................................................. 15-1

Remote Control via USB ........................................................................... 15-2

Remote Control via LAN ........................................................................... 15-6

Remote Control via GPIB ......................................................................... 15-9

16 Troubleshooting ............................................................................. 16-1

17 Specifications ................................................................................. 17-1

18 Appendix ........................................................................................ 18-1

Appendix A: Accessories an d Opt ions ....................................................... 18-1

Appendix B: Warranty .............................................................................. 18-3

Index ....................................................................................................... 1

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1 Quick Start RIGOL

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1 Quick Start

This chapter introduces the preparations when using the oscilloscope for the first time, the front panel, rear panel and user interface of t he oscilloscope as well as the using method of the built-in help syst em.

The contents of this chapter:

 General Inspection  Appearance and Dimensions  To Prepare the Oscilloscope for Use  Front Panel Overview  Rear Panel Overview  Front Panel Function Overview  User Interface  To Use the Security Lock  To Use the Built-in Help System

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General Inspection

1. Inspect the shipping container for damage.

Keep the damaged shipping container or cushioning material until the contents of the shipment have been checked for completeness and the instrument has passed both electrical and mechanical tests.

The consigner or carrier shall be liable for the damage to instrument resulting from shipment. RIGOL would not be responsible for free maintenance/rework or replacement of the unit.

2. Inspect the instrument.

In case of any damage, or defect, or failure, notify your RIGOL sales representative.

3. Check the Accessories

Please check the accessories according to the packing li st s . If the acces sories are incomplete or damaged, please contact your RIGOL sales representative.

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Appearance and Dimensions

Figure 1-1 Front View Unit: mm

Figure 1-2 Top View Unit: mm

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To Prepare the Oscilloscope for Use

To Adjust the Supporting Legs

Adjust the supporting legs properly to use them as stands to tilt the oscilloscope upwards for stable placement of the oscilloscope as well as better operation and observation.

Figure 1-3 To Adjust the Supporting Legs

To Connect to Power Supply

The power requirements of the oscilloscope are 100-240 V, 45-440 Hz. Please use the power cord supplied with th e ac ces sories to connect the oscillo s co pe to the

power source. At this point, the power key at the lower-left corner of the front panel is in breathing state.

Power Socket

Figure 1-4 To Connect to Power Supply

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Power-on Inspection

When the oscilloscope is energized, press the power key at the lower-left corner of the front panel to start the osci lloscope. D uring the start-up process, t he

oscilloscope performs a series of self-tests and you can hear the sound of relay switching. After the self-test, the “Current Options” dialog box will be displayed if your instrument currently installs the trial versions of opetions. From this dialog box you can view the types, names, versions and the time left of the options currently installed. The trial versions of the opetions will be provided when the instrument leaves factory and the time left is about 2000 minutes.

To Connect the Probe

RIGOL provides passive probes for the DS2000A series oscil l oscopes. For detailed technical information of the probes, please refer to the corresponding Probe User’s Guide. The following are the probes recommended for this oscilloscope.

Model Description

RP3300 350 MHz, passive probe, standard RP3500A 500 MHz, passive probe, optional

Connect the Probe:

1. Connect the BNC terminal of the probe to a channel BNC connector of the oscilloscope at the front panel.

2. Connect the ground al ligat or c lip of the p robe to the circuit gr ound terminal and connect the probe tip to the circuit point to be tested.

Figure 1-5 To Connect the Probe

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o avoid electric shock during the use of probe, please make sure that

Function Inspection

1. Press Storage  Default to restore the instrument to its default configuratio n.

2. Connect the ground alligator clip of the probe to the “Ground Terminal” under the probe compensation signal output terminal.

3. Use the probe to connect the input terminal of CH1 of the oscilloscope and the “Compensation Signal Output Terminal” of the probe.

Compensation Signal Output Terminal Ground Terminal

Figure 1-6 To Use the Compensation Signal

4. Press AUTO.

5. Observe the wav eform on the disp lay. In normal condition, the displa y should be a square waveform as shown in the figure below:

Figure 1-7 Square Waveform

6. Use the same method to test the other channels. If the square waveforms actually shown do not match that in the figure above, please perform

Compensation in the next section.

WARNING

T the insulated wire of the probe is in good condition and do not touch the metallic part of the probe when the probe is connected to high voltage source.

Probe

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Tip

probe compensation adjustment and can not be used for calibration.

Over compensated Perfectly compensated Under compensated

The signal output from the probe compensation connector can only be used for

Probe Compensation

When the probes are used for the first time, you should compensate the probes to match the input channels of the oscilloscope. Non-compensated or poorly compensated probes may c ause measurement inaccuracy or error. The prob e compensation pro cedur e s are as follows.

1. Perform steps 1, 2, 3 and 4 of

2. Check the waveforms displayed and compare them with the following.

Figure 1-8 Probe Com pensation

3. Use a nonmetallic driver to adjust the low-frequency compensation adjustment hole on t he prob e until the wavef orm displa yed is as the “Perfectly compensated” in the figure above.

Function Inspection in the previous section.

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3 4 5 6 7 8 9 10 11

Front Panel Overview

1 2

12 13 14 15 16 17 18 19 20 21

Figure 1-9 Front Panel Overview

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[1]

Table 1-1 Front Panel Desc ript ion

No. Description No. Description

1 Menu 12 Power Key 2 LCD 13 USB HOST 3 Multi-function Knob 14 HORIZONTAL 4 Function Menu Keys 15 Function Setting Menu Softkeys 5 Signal Generator

16 VERTICAL 6 Navigation Knob 17 Analog Channel Input Area 7 CLEAR 18 Waveform Record/Playback 8 AUTO 19 TRIGGER 9 RUN/STOP 20 EXT TRIG Input Terminal 10

SINGLE

21 Probe Compensation Signal Output

Terminal/Ground Terminal

11 Help&Print -- --

[1]

Note

: Only applicable to DS2000A-S.

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Rear Panel Overview

1 2 3

4 5 6 7 8

Figure 1-10 Rear Panel Overview

1. Handle

Pull up the handle vertically for easy carrying of the instrument. When you do not need the handle, press it down.

2. LAN

Connect the instrument to the network via this interface f or remote control. This oscilloscope conforms to the LXI-C class instrument standards and can quickly build test system with other instruments.

3. USB DEVICE

PictBridge printer or PC can be connected via this interface to print waveform data or control the instrument using PC software or user-defined programming.

4. Fuse

If a new fuse is required, please use the specified fuse (250V, T2A).

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a) Turn off the instrument and remove the power cord. b) Insert a small straight s cre w driv er into the g roove at the p owe r s ocke t and

prize out the fuse seat gently.

c) T ake out the f use and replace it with a s pecified one. R eins tall the fuse s eat.

5. AC Power Socket

AC power input terminal. The power requirements of this oscilloscope are 100-240 V, 45-440 Hz. Use the power cord provided with t h e accesso ries to connect the instrument to AC power. Then, you can press the power key at the front panel to start the instrument.

6. Lock Hole

You can lock the instrument to a fixed location using the security lock (please buy it yourself) via the lock hole.

7. Trigger Out

The oscilloscope outputs a signal that can reflect the current c apture rate of the oscilloscope at each trigger via this interface. Connect this sig nal t o a waveform display device to measure the frequency of the signal and the measurement result should be the same with the current capture rate.

8. Signal Output

When the corresponding signal source 1 or signal source 2 is enabled, the current signal can be output to the analog channel output terminal of the oscilloscope or the external device connected via [Source 1] or [Source 2]. This function is only applicable to DS2000A-S.

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waveforms on the screen and the c hannel input

Front Panel Function Overview

VERTICAL

CH1, CH2: analog input channels. The 2

channels are marked by different colors which are also used to mark both the corresponding

connectors. Pres s any key to o pe n the corresponding channel me nu and p ress again t o turn off the channel.

MATH: press this key to open the math

operation menu under whi ch ad d, subtract, multiply , divide, FFT, logic and advanced operations are provided.

REF: press this key to enable the reference waveform function to compare the waveform actually tested with the reference waveform.

Vertical POSITION: modify the vertical position of the current channel waveform. Turn clockwise to increase the position and turn counterclockwise to decrease. During the modification, the waveform would move up and down and the

position message (e.g. ) at the lower-left corner of the screen would change accordingly. Press down this knob to quickly reset the vertical position to

zero.

VERTICAL SCALE: modify the vertical scale of the current channel. Turn clockwise to decrease the scale and turn counterclockwise to increase. During the modification, the amplitude of the waveform would enlarge or reduce and the scale

information (e.g. ) at the lower side of the screen would change accordingly. Press down this knob to quickly switch the vertical scale adjustment

modes between “Coars e” and “Fin e”.

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Decode1, Decode2: decoding function keys. Press the correspondin g key to open the decoding function menu. DS2000A supports parallel decoding and protocol decodings.

HORIZONTAL

MENU: press this key to open the

horizontal control menu under which to turn on or off the delayed sweep function, switch between different

time base modes, switch between “Coarse” and “Fine” adjustment of scale as well as modify the horizontal reference setting.

HORIZONTAL SCALE: modify the horizontal time base. Turn clockwise to reduce the time base and turn counterclockwise to increase the time base. During the modification, waveforms of all the channels will be displayed in expanded or

compressed mode and the time base me ssage (e.g. ) at the upper side of the screen would change accordingly. Press down this knob to quickly switch to

delayed sweep state.

HORIZONTAL POSITION: modify the horizontal position. The trigger point would move left or right relative to the center of the screen when you turn the knob. During the modificat ion, w avef orms of all the c hannels would mo ve left or right and

the horizontal position message (e.g. ) at the upper-right corner of the screen would change accordingly. Pressing down this knob will q uickly reset the

horizontal position (or the delayed sweep position).

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MODE

Press this k ey to clear all t he wavef orms on the sc reen. If still be displayed.

Press this key to set the state of the oscilloscope to

TRIGGER

: press this key to switch the trigger mode to Auto, Normal or Single and the corresponding state backlight of the current tr i gger mode would be illuminated.

TRIGGER LEVEL: modify the trigger level . Turn clockwise to increase the level and turn counterclockwise to reduce the level. During the modification, the trigger level line would move up

and down and the value in the trigger level message box (e.g. ) at the lower-left corner of the screen would change accordingly. Pressing down the knob

will quickly reset the trigger level to zero point.

MENU: press this key to open the trigger operation menu. This oscillos cope provides various trigger types.

FORCE: in Normal and Single trigger mode s, pres s this key to generate a trigger signal forcefully.

CLEAR

the oscilloscope is in “RUN” state, new waveforms will

RUN/STOP

“RUN” or “STOP”. In “RUN” state, the key is illuminated in yellow. In “STOP” state, the key is illuminated in red.

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according to the input signal t o realize optimum waveform

SINGLE

Press this key to set the trigger mode to “Single”. In single trigger mode, pres s FORCE to generate a trigger signal immediately.

AUTO

Press this key to enable the waveform auto setting function. The oscilloscope will automatically adjust the vertical scale, horizontal time base and trigger mode

display. Note that auto setting requires that the frequency of the signal under test s hould be no lower than 50 Hz, the duty cycle be greater than 1% and the amplit u de be at least 20 mVpp. If the parameters exceed these limits, “Auto failed！” would be displayed after pressing this key and the quick param eter meas urement menu m ight not b e displayed.

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Adjust waveform brightness:

For example, this knob ca n be used to quic kly loca te the w a vef orm fr ame (“ Current

Knob

In non-menu-operation mode (menu is hidden), turn this knob to adjust the brightness of waveform display. The adjustable range is from 0% to 100%. Turn clockwise to increase the brightness and counterclockwise to reduce.

Multifunction Knob (the backlight goes on during operation):

In menu operation, press any menu softkey and turn the knob to switch to the desired submenu under this menu and then press down the knob to select the current submenu. It can also be used to modify parameters and input filename. Besides, for DS2000A-S oscilloscope, when the current operation interface is signal generator, the numeric keyboard will be dis playe d when you press the corresponding menu key and press down the kn ob. At this point, you can us e t he knob to inp ut the desired parameter value and unit directly.

Pressing down this knob w ill reset the brightness to 50%. You ca n also press Display  WaveIntensity and use the knob to adjust the waveform brightness.

Navigation K n ob

This knob provides quick Adjust/L ocate function for numerical parameters with relatively larger settable range. Turn clockwise (counterclockwise) to increase (reduce) the value. The inner knob is used for fine adjustment and the oute r knob for coarse adjustment。

Frame” menu) to be played back in the waveform playback function. Similar menus include trigger holdoff, pulse width setting, slope time etc.

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Measure

Source

Press this key to enter the signal source setting interface. You can

Note: This function is only applicable to DS2000A-S.

turn onor off the outpts of the [Source1] and [Source2] connectors and set the par ameters of the output s ignal (such as the frequency, amplitude, offset and phase).

Record

Stop Play/Pause Record

Record: press this ke y to s ta rt rec ord ing th e w a v ef o rm. The bac klight is illuminated in red. Besides, when record constant on (Open) is enabled, the backlig ht will also be illuminated.

Play/Pause: in stop or pause state, press this key to play back the waveform and press again to pause the play. The backlight is illuminated in yellow.

Stop: press this key to stop the waveform being recorded or being played back. The backlight is illuminated in orange.

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Print

Press this k ey to execute the print f unction or save t he screen in the USB storage device. If a PictBridge printer is currently connected and the printer is in idle state, pressing this key will execute the print function. If no printer but a USB storage device is currently connected, pressing this key will save the screen to the U SB storage device in “.bmp” format. If the current storage type is picture, the screen will be saved in the USB storage device in the specified picture format (bmp, png, jpeg and ti ff). When printer and USB storage device are connected at the same time, the printer enjoys higher priority.

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User Interface

DS2000A provides 8.0 inches, WVGA (800*480) 160,000 color TFT LCD. What is worth mentioning is that the 14-grid ultra-wide screen enables you to view “longer” waveform.

1 2 3 4 5 6 7 8 9 10 11

12 13 14 15 16 17 18

Figure 1-11 User Interface

1. Auto Measurement Items

Provide 12 horizontal (HORIZONTAL) and 12 vertical (VERTICAL) measurement parameters. Press the softkey at the left of the screen to activate the corresponding measurement item. Press MENU continuously to switch b etween the horizontal and vertical parameters.

2. Channel Label/Waveform

Different channels are mar ked by dif f erent colors and the c ol or of the w a v e form

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screen

complies with the color of the channel.

3. Status

Available states include RUN, STOP, T’D (triggered), WAIT and AUTO.

4. Horizontal Time Base

 Represent the time per grid on the horizontal axis on the screen.  Use HORIZONTAL SCALE to modify this parameter. The range

available is from 1.000 ns to 1000 s (for 200 MHz bandwidth oscilloscope, the range is from 2.000 ns to 1000 s; for 100 MHz and 70 MHz bandwidth oscilloscopes, the range is from 5.000 ns to 1000 s).

5. Sample Rate/Memory Depth

 Display the current sample rate and memory depth of the oscilloscope.  Use HORIZONTAL SCALE to modify this parameter.

6. Waveform Memory

Provide the schematic diagram of the memory position of the waveform currently on the screen.

waveform on the

7. Trigger Position

Display the trigger position of the waveform in the waveform memory and on the screen.

8. Horizontal Position

Use HORIZONTAL POSITION to mo di fy thi s paramete r. Pressing down the knob will automatically set the parameter to zero.

9. Trigger Type

Display the trigger type currently selected and trigger condition setting. Different labels are displayed when different trigger types are selected.

For example: represents triggering on the rising edge in “Edge” trigger.

10. Trigger Source

Display the trigger source currently selected (CH1, CH2, EXT, or AC Line). Different labels are displayed when different trigger sources are selected and the color of the trigger parameter area will change accordingly. For example: denotes that CH1 is selected as the trigger source.

11. Tri gger Level

 at the right of the screen is the trigger level label and the trigger level

value is displayed at the upper-right corner of the screen.

 When using TRIGGER LEVEL to modify the trigger level, the trigger

level value will change with the up and down of .

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Note: In slope trigger, runt trigger and windo ws tr i gge r, there are two trigger level labels ( and ).

12. CH1 Vertical Scale

 Display the voltage value per grid of CH1 waveform vertically.  Use VIRTICAL SCALE to modify this parameter.  The following labels will be displayed according to the current channel

setting: channel coupling (e.g. ), input impeda n ce ( e .g. ) and bandwidth limit (e.g. ).

13. CH2 Vertical Scale

 Display the voltage value per grid of CH2 w aveform vertically.  Use VIRTICAL SCALE to modify this parameter.  The following labels will be displayed according to the current channel

setting: channel coupling (e.g. ), input impedance (e.g. ) and bandwidth limit (e.g. ).

14. Source 1 Waveform

 Display the current waveform type in Src1 Setup.  When the impedance of the source is set to 50 Ω, is displayed at the

right of Source 1 Waveform.

 When modulation is turned on, is displayed at the right of Source 1

Waveform.

 Only applicable to DS2000A-S.

15. Source 2 Waveform

 Display the current waveform type in Src2 Setup.  When the impedance of the source is set to 50 Ω, is displayed at the

right of Source 2 Waveform.

 When modulation is turned on, is displayed at the right of Source 2

Waveform.

 Only applicable to DS2000A-S.

16. Message Box

Display prompt messages.

17. Notification Area

Display system time, sound icon and USB storage device icon.  System Time: displayed in “hh:mm (hour:minute)” format. When printing

or storing the waveform, the output file will contain this time message. Press Utility  System  System Time to set through the following format: yyyy-mm-dd hh-mm-ss (year-month-date hour-minute-second)

 Sound Icon: when sound is enabled, will be displayed. Press Utility 

Sound to enable or disable the sound.

 USB Storage device Icon: when a USB storage device is detected, will

be displayed.

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Denote that at the front panel can be used to select parameter items. The backlight of turns on when parameter selection is valid.

Denote that can be used to modify parameter values. The backlight of turns on when parameter input is valid.

Denote that can be used to modify parameters and the numeric

when parameter input is valid.

Denote that you can use the to quickly adjust/locate parameters.

Denote that you can use to adjust the parameter and then press down to select the parameter.

Denote that the current menu has several options.

Denote that the current menu has a lower level menu.

Press this key to return to the previous menu.

Note: The following direction keys might appear in the grid at the lower-left corner of the menu bar:

Denote that you can open the next page menu.

Denote that you can open the previous page menu.

18. Operation MENU

Press any softkey to activate the corresponding menu. The following symbols might be displayed in the menu:

keyboard with which you can input parameter values directly will be displayed when is pressed do wn . The backlight of turns on

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To Use the Security Lock

If needed, you can use the security lock (please buy it yourself) to lock the oscilloscope to a fixed locat ion. The me thod is as f oll ows, align the l ock with th e l ock hole and plug it into the lock hole vertically, turn the key clockwise to lock the oscilloscope and then pull the key out.

Figure 1-12 To Use the Security Lock

Note: Do not insert any other articles into the security lock hole to avoid damaging the instrument.

Security Lock Hole

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To Use the Built-in Help System

The help system of this oscilloscope provides instructions for all the function keys (including menu keys) at the f ront p anel . P res s Help to open the help interface and press again to close the inter face . The help interface mainly consists of two parts. The left is “Help Options” and you can use “Button” or “Index” mode to select. The right is “Help Display Area”.

Help Options Help Display Area

Figure 1-13 Help Information

Button:

Default mode. In this mode, you can press the button (except the pow e r key , the knob and th e men u page up/do w n key / ) or rotate the navigation knob at the front panel directly to get the corresponding help information in the “Help Display Area”. Use to select “To Index” and then press the knob to switch to Index mode.

Index:

In this mode, use to select the desired item (for example, “Band Width”). The item currently selected is displayed in brown. Press the knob to get the corresponding help information in the “Help Display Area”. Use to select “To Button” and then press the knob to switch to Button mode.

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2 To Set the Vertical System

The contents of this chapter:

 To Enable the Channel  Channel Coupling  Bandwidth Limit  Probe Ratio  Input Impedance  Waveform Invert  Vertical Scale  Vertical Expansion  Amplitude Unit  Channel Label  Delay Calibration

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To Enable the Channel

DS2000A provides 2 analog input c hannels (CH1 and CH2) and provides independent vertical control system for each channel. As the vertical system setting methods of the 2 channels are completely the same, this chapter takes CH1 as an example to introduce the setting method of the vertical system.

Connect a signal to the channel connector of any channel (for example, CH1) and then pre ss CH1 in the vertical control area (VERTICAL) at the front panel to enable CH1.

Screen:

The channel setting menu is disp layed at the right side of the screen and the channel label at the bottom of the screen (as shown in the figure below) is highlighted. The information displayed in the channel label is related to the current channel setting.

After the channel is turned on, modify the parameters such as the vertical scale, horizontal time base and trigger mode according to the input signal to make the waveform display easy to observe and measure.

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Channel Coupling

The undesired s ignals can be filtered out by s etting the coupling mode. For example, the signal under test is a square waveform with DC offset.  When the coupling m ode is “DC”: the DC and AC components of the sig nal under

test can both pass the channel.

 When the coupling mode is “AC”: the DC components of the signal under test

are blocked.

 When the coupling mode is “GND”: the DC and AC components of the signal

under test are both blocked.

Press CH1  Coupling and use to select the desired coupling mode (the default is DC). The current coupling mode is displayed in the channel label at the bottom of the screen. You can also pr ess Coupling continuously to switch the coupling mode.

Bandwidth Limit

Setting the bandwidth limit can reduce the display noise. For example, the signal under test is a pulse with high frequency oscillation.  When bandwidth limit is disabled, the high frequency components of the signal

under test can pass the channel.

 Enable bandwidth limit and limit the bandwidth to 20 MHz or 100 MHz (only

applicable to 200 MHz and 300 MHz oscilloscopes), the high frequency components that exceed 20 MHz or 100 MHz are attenuated.

Note: for DS2102 and DS2072, the bandwidth limit can only b e set to 20 MHz.

Press CH1  BW Limit and use to enable or disable bandwidth limit (the default is OFF). When bandwidth limit (20 MHz or 100 MHz) is e nabled, the cha racter “B” will be displayed in the channel label at the bottom of the screen. You can also press BW Limit continuously to switch between on and off of the bandwidth limit.

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0.01X

1000X

1:100

1000:1

Probe Ratio

You can set the probe attenuation ratio manually. The probe ratio values available are as shown in the table below.

Table 2-1 Probe Attenuation Coefficient

Menu Attenuation Coefficient

0.02X

0.05X

0.1X

0.2X

0.5X 1X 2X 5X

10X 20X

50X 100X 200X 500X

1:50 1:20 1:10

1:5 1:2 1:1 2:1

5:1 10:1 20:1 50:1

100:1 200:1 500:1

Input Impedance

This coscilloscope provides two input impedance modes (1 MΩ (default) and 50 Ω) to

reduce the circuit load c aus ed by the inte ract ion of t he oscill oscope and the circ uit to be tested.  1 MΩ: the input impedance of the oscilloscope is rather high and the current

flowing into the oscilloscope from the circuit under test can not be ignored.

 50 Ω: match the oscilloscope with a device with 50 Ω output impedance.

Press CH1  Input to set the inp ut impedance of the oscillos cope. When “50 Ω” is selected, “Ω” is displayed in the channel label at the bottom of the screen.

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Waveform Invert

When waveform invert is enabled, the waveform display rotates 180 degree relative to the ground potential. When waveform invert is disabled, the wav e fo rm display is normal. Press CH1  Invert to enable or disable waveform invert.

Vertical Scale

The vertical scale can be adjusted in “Coarse” or “Fine” mode.

Press CH1  Volts/Div to s elect the desired mode. Rotate VERTICAL SCALE to adjust the vertical scale (clockwise to reduce the scale and counterclockwise to increase).

The scale information (such as ) in the channel label at the bottom of the screen will change accordingly during the adjustment. The adjustable

range of the vertical scale is related to the probe ratio currently set. By default, the probe ratio is 1X and the adjustable range of the vertical scale is from 500 μV/div to 10 V/div.

 Coarse adjustment (take counterclockwise as an example): set the vertical scale

in 1-2-5 step namely 5 00 μV/div, 1 mV/div, 2 mV/div, 5 mV/div, 10 mV/div…10 V/div.

 Fine adjustment: further adjust the vertical scale within a relatively smaller

range to improve v e rtical r es olution. If the am plitud e of the input waveform is a little bit greater than the full scale under the current scale and the amplitude would be a little bit lower if the next scale is used, fine adjustment can be used

to improve the amplitude of waveform display to view signal details. Note: You can also press VERTICAL SCALE to quickly switch between “Coarse” and “Fine” adjustments.

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Vertical Expansion

When using VERTICAL SCALE to change the vertical scale of the analog channel, you can choose to expand or compress the signal vertically around the center of the screen or the ground point of the signal.

Press Utility  System  VerticalExp to select “Center” or “Ground” and the default is “Ground”.  Center: when the vertical scale is modified, the waveform will expand or

compress around the center of the screen.

 Ground: when the vertical scale is modified, the waveform ground level will

remain at the same point on the screen and the waveform will expand or compress around this point.

Amplitude Unit

Select the amplitude dis play unit f or the cur rent channel. The av ailable units a re W, A, V and U. When the unit is changed, the unit displayed in the channel label will change accordingly.

Press CH1  Unit to select the desired unit and the default is V.

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Channel Label

You can modify the labels used to mark the analog channels (CH1 and CH2) at the left side of the screen. The label is the number of the channel (such as ) by default and the length of the label can not exceed 4 characters. Note: Only English input method can be used for this operation.

Press CH1 Label to enter the label modification interface as shown in the figure below.

Name Input Area Keyboard Upper/Lower Case Switch

For example, change “ ” to “ ”.

Press Keyboard to select the “Keyboard” area. Select “Aa” using and press down to switch it to “

A”. Select “C” using and press down to input the

character. Use the same method to input “hn1”.

T o modify or delete the input character, press Name to select the “Name Input Area” and use to select the character to be modified or deleted. Enter the desired character or press Delete to delete the character selected.

After finishing the input, press OK to finish the modification and the channel label will change to “ ”.

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Delay Calibration

When using an oscilloscope for actual measurement, the transmission delay of the probe cable may bring relatively greater error (zero offset). DS2000A allows users to set a delay time to calibrate the zero offset of the corresponding channel. Zero offset is defined as the offset of the crossing point of the waveform and trigger level line relative to the trigger position, as shown in the figure below.

Press CH1 Delay-Cal and use to set the desired delay time. The range available is from -200 ns to 200 ns. Note: This parameter is related to the instrument model and the current horizontal scale setting. The larger the horizontal scaleis, the larger the scale will be.

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3 To Set the Horizontal System

The contents of this chapter:

 Delayed Sweep  Time Base Mode  Horizontal Scale  Horizontal Reference

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enlargement

Delayed Sweep

Delayed sweep can be us ed to enla rge a leng th of waveform horizontally t o view the waveform details.

Press MENU in the horizontal control area (HORIZONTAL) at the front panel and press Delayed to enable or disable delayed sweep. Note that to enable delayed sweep, the current time base mode must be “Y-T” and the “Pass/Fail test” must be disabled.

In delayed sweep mode, the screen is divided into two display areas as shown in the figure below.

Main time

base

Delayed Sweep Time Base

The waveform before

The waveform after enlargement

The waveform before enlargement:

The waveform in the area that has not been covered by the subtransparent blue in the upper part of the screen is the waveform before enlargement. You can turn

HORIZONTAL POSITION HORIZONTAL SCALE

to move the area left and right or turn

to enlarge or reduce this area.

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Tip

to directly switch to delayed sweep mo de.

The waveform after enlargement:

The waveform in the l ower part of the screen is the h orizontally expand ed wa veform. Note: Compared to the main time base, the delayed time base has increased the waveform resolution (as shown in the figure above). The delayed time base should be less than or equal to the main time base.

You can also press down HORIZONTAL SCALE (delayed sweep shortcut key)

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The signal must be

Time Base Mode

Press MENU in the horizontal control area (HORIZONTAL) at the front panel and then press Time Base to select the time base mode of the oscilloscope and the default is Y-T.

Y-T Mode

This mode is the main time base mode and is applicable to both of the input channels. In this mode, the Y a xis rep resents volt age and the X axis represents time. Note that only when this mode is enabled can

X-Y Mode

Delayed Sweep be turned on.

In this mode, the oscilloscope changes the two channels from voltage-time display mode to voltage-voltage display mode. Wherein, the X axis and Y axis tracks the voltages of CH2 and CH1 respectively. The phase deviation between two s ignals with the same frequency can be easily measured via Lissajous method. The figure below shows the measurement schematic diagram of the phase deviation.

centered horizontally

II I

III IV

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According to sinθ=A/B or C/D (wherein, θ is the phase deviation angle between the two channels and the definitions of A, B, C and D are as shown in the figure above), the phase deviation angle is obtained, that is:

θ=±arcsin (A/B) or ±arcsin( C/ D)

If the principal axis of the ellipse is within quadrant I and III, the phase deviation angle obtained should be within quadr ant I and IV, namely within (0 t o π/2) or (3π/2 to 2π). If the principal axis of the ellipse is within quadrant II and IV, the phase deviation angle obtained s hould be wit hin quad r ant II and II I, name ly within (π/2 to π) or (π to 3π/2).

X-Y function can be used to measure the phase deviation occurred when the signal under test passes through a c ircuit network. Connect the oscilloscope to the circuit to monitor the input and output signals of the circuit.

Application example: measure the phase deviation of the input signals of two channels.

Method 1: Use Lissajous method

1. Connect a sine signal to CH1 and then connect a sine signal with the same

frequency and amplitude but a 90° phase deviation to CH2.

2. Press AUTO and enable X -Y mode. Rotate Horizontal SCALE to ajdust the

sample rate properly to get better Lissajous figure for better observation and

measurement.

3. Roate VERTICAL POSITION of CH1 and CH2 to display the signals at the

center of the screen and roate VERTICAL SCALE

of CH1 and CH2 to make the signals easy to observe. At this point, the circle as shown in the fig ure b elow should be displayed.

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4. As shown in the figure abo v e, t he dis tances from the c ros sing points of a xis an d the circle to the origin of the coordinates are approximately equal. Thus, the phase deviation angle

θ=±arcsin1=90°.

Note:

 In Y -T mode, the oscilloscope could use any sa mpl e rate (wit hin the guaranteed

range) to capture waveform. The maximum samp l e rate of X-Y mode is 1.0 GSa/s. Generally, reducing the sample rate properly could improve the display effect of Lissajous figure.

 When X-Y mode is enabl e d,

Delayed Sweep will be disabled automatically.

 The following functions are not available in X-Y mode:

Auto measure, cursor measure, math operation, reference waveform, delayed sweep, vector display, HORIZONTAL POSITION

, trigger c on t rol, memory

depth, acquisition mo de , Pass/Fail test and waveform record.

Method 2: Use the shortcut measurement function

Please refer to “Phase A→B ” and “Phase A→B ” measurement functions of “Delay and Phase” in page

6-15.

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Slow Sweep

s, the instrument continues to finish the wa veform at the rig ht

signal, it is recommended that the Channel Coupling is set to “DC”.

Roll Mode

In this mode, the waveform s crolls from the right to the left to update the display and the waveform horizontal position and trigger control are not available. The range of horizontal scale adjustment is from 200.0 ms to 1000 s.

Note: When Roll mode is enabled,

Pass/ Fail Test, Measurement Range, Waveform Record, To Set the Persistence Time and To Trigger the Oscilloscope are not available.

Another mode similar to R oll m ode. When the ho rizo ntal tim e base is s et to 200 ms or slower, the instrument enters “slow sweep” mode in which the instrument first acquires the data at the left of the trigger point and then waits for trigger event. After the trigger occur of the trigger point. When slow sweep mode is used to observe low frequency

Delayed Sweep, Protocol Decoding,

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Horizontal Scale

Being similar to “Fine” mode.

Press MENU  ScaleAdjust in the horizontal control area (HORIZONTAL) at the front panel to select the desired mode. Turn HORIZONTAL SCALE to ad j ust the horizontal scale. Turn clockwise to reduce the horizontal scale and turn counterclockwise to increase.

The scale information (s uch as ) at the upper left corner of the screen will change accordingly during the adjustment. The range of horizontal scale

adjustment is from 1.000 ns to 1000 s (for 200 MHz bandwidth oscilloscope, the range is from 2.000 ns to 1000s; for 100 MHz and 75 MHz bandwidth oscil l o sc opes, the range is from 5.000 ns to 1000 s).

 Coarse (take counterclockwise as an example): set the horizontal scale in 1-2-5

step namely 1 ns、2 ns、5 ns、10 ns…1.000 ks.

 Fine: further adjust within smaller range.

Vertical Scale, the horizontal scale can be adjusted in “Coarse” or

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Horizontal Reference

Horizontal reference is the reference position according to which the screen waveform expands or compresses horizontally when ad justing HORIZONTAL

SCALE. In Y-T mode (this function is not a vailable in X -Y mode and Roll mode), press MENU  HorRef in the horiz onta l c ontrol a rea (HO RIZ ONTAL) at the front panel to

select the desired reference mode and the default is “Center”.

1. Center

When changing the ho riz o nt al t ime base, the waveform expands or compres ses horizontally around the center of the screen.

2. Trig Pos

When changing the horiz o nt al t im e b ase, the waveform e xpand s or compresses horizontally around the trigger point.

3. User

When changing the ho riz o nt al t im e b ase, the waveform e xpand s or compresses horizontally around the user-defined reference position. In the horizontal direction, the screen can display a maximum of 700 points with the leftmost as 350 and the rightmost as -350. For example, set the reference position to 150.

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4 To Set the Sample System

The contents of this chapter:

 Acquisition Mode  Sample Mode  Sample Rate  Memory Depth  Antialiasing

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Acquisition Mode

The acquisition mode is used to control how to generate waveform points from sample points.

Press Acquire  Acquisition in the function menu at the front panel and use to select the desired acquisition mode (the default is normal), then press down the knob to select this m ode. You can also press Acquisition continuously to s witch the acquisition mode.

Normal

In this mode, the oscilloscope s ampl es the sig nal at eq ual time int erval to reb uild t he wavef orm. For mos t of the wa veforms, the best display e ffect can be obtained using this mode.

Average

In this mode, the oscilloscope averages the waveforms from multiple samples to reduce the rand om noise of the input signal and improve t he vertical resolution. The greater the number of averages is, the lower the noise will be and the higher the vertical resolution will be but the slower the response of the displayed waveform to the waveform changes will be.

The available rang e of the number of ave rages i s from 2 to 8192 a nd the def ault is 2. When “Average” mode is selected, press Averages and use to set the desired number of averages as the power function of 2.

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The Waveform before Average:

The Waveform after 256 Averages:

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Peak Detect

In this mode, the oscilloscope acquires the maximum and minimum values of the signal within the samp le interval to g et the envelop e of the sig nal or the narrow pulse of the signal that mi g ht b e lost. In this mode, sig nal confusion can be prev ent ed but the noise displayed would be larger.

In this mode, the oscilloscope can displa y all t he pulses with pulse widths at least as wide as the sample period.

High Resolution

This mode uses a kind of ultra-sample technique to average the neighboring points of the sample w aveform to reduce the random n oise on the input signal a nd generate much smoother waveforms on the screen. This is generally used when the sample rate of the digital converter is higher than the stor age rate of the acquisit ion memory.

Note: “Average” and “High Res” modes use different averaging methods. The former uses “Multi-sample Average” and the latter uses “Single Sample Average”.

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Tip

to stop the sample, the oscilloscope will hold the las t disp lay. At

zoom the waveform.

Sample Mode

This oscilloscope only supports real-time sample. In this mode, the oscilloscope samples and displays waveform within a trigger event. The maximum real-time sample rate of DS2000A is 2 GSa/s and the current sample rate is displayed under the Sa Rate menu.

Press RUN/STOP this point, you can still use the vertical control and horizontal control to pan and

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Sample Rate

The sample rate of this oscilloscope is up to 2 GSa/s. Note that the sample rate is displayed in the status bar at the upper side of the screen and in the Sa Rate menu and can be changed by adjusting the horizontal time base (s/div) through HORIZONTAL SCALE

The influence on the waveform when the sample rate is too low:

1. Waveform Distortion: when the sample rate is too low, some waveform details are lost and the waveform displayed is rather different from the actual signal.

or modifying the Memory Depth.

2. Waveform Confusion: when the sample rate is lower than twice the actual

signal frequency (Nyquist Frequency), the frequency of the waveform rebuilt from the sample da ta is lower than the actual signal frequency. The most common aliasing is the jitter on fast edge.

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3. Waveform Leakage: when the sample rate is too low, the waveform rebuilt from the sample data does not reflect all the actual signal information.

Pulse disappeared

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Trigger Point

Pre-sample

Delayed Sample

Memory Depth

Memory depth refers to the number of waveform points that the oscilloscope can store in a single trigger sample and it reflects the storage ability of the sample memory. DS2000A provides up to 56 Mpts memory depth (option) an d 14 Mpts standard memory depth.

The relation of memory de pth, sa mple ra te and w avef orm length f ulfills the equation below:

Memory depth = sample rate (Sa/s) × waveform length (s/div × div)

Therefore, under the same timebase scale, higher memory depth can ensure higher sample rate.

Press Acquire  Mem Dep th, use to switch to the desired memory depth (the default is auto) and then press down the knob to select the option. You can also press Mem Depth continuously to switch the memory depth.

When a single channel is enabled, the memory depths available include Auto, 14kPoints, 140kPoints, 1.4MPoints, 14MPoints and 56MPoints (option). In “Auto” mode, the oscilloscope selects the memory depth a uto mat ic al l y according to the current sample rate.

When CH1 and CH2 are enabled, the memory dep ths availab le include Auto, 7kPoints,

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70kPoints, 700kPoints, 7MPoints and 28MPoints (option). In “Auto” mode, the oscilloscope selects the m emory depth aut omatically acc ording to the current sample rate.

Antialiasing

At slower sweep speed, the sample rate is reduced and a dedicated display algorithm is used to minimize the possibility of aliasing.

Press Acquire  Anti_Aliasing to enable or disable the antialiasing function. By default, ant ialiasing is disabled. The displayed waveforms will be more susceptible to aliasing when this function is disabled.

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5 To Trigger the Oscilloscope

For trigger, you set cer ta i n tr i gger condition according to the requirement and when a waveform in the waveform stream meets this condition, the oscilloscope captures this wavef orm as well as the neighb ouring p art and displays them on the sc reen. For digital oscilloscope, it displays waveform continuously no matter whether it is stably triggered, but only stable trigger can ensures stable display. The trigger circuit ensures that every time base sweep or acquisition starts from the input signal and the user-defined trigger condition, namely every sweep is synchronous to the acquisition and the waveforms acquired overlap to display stable waveform.

T rigger setting should be based on the features of the input signal, thus you n eed to have some knowledge of the signal under test to quickly capture the desired waveform. This oscilloscope provides abundant adv anced trigger func tions which can help you to focus on the desired waveform details.

The contents of this chapter:

 Trigger Source  Trigger Mode  Trigger Coupling  Trigger Holdoff  Noise Rejectio  Trigger Type  Trigger Output Connector

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Trigger Source

Press MENU  Source in the trigger control area (TRIGGER) at the front panel to select the desired trigger source. Siganls input from CH1/CH2 and the [EXT TRIG] connector as well as the AC Line can all be used as trigger sou rce.

Analog channel input:

Signals input from analog channels CH1 and CH 2 can all be used as the trigger source. No matt er w he the r the input of the channe l s elected is enabled, the c hannel can work normally.

External trigger input:

External trigger source can be used to connect external trigger signal to the EXT TRIG channel when both of the two channels are sampling data. The trigger sig nal (such as external clock and signal of the circuit to be tested) will be connected to EXT trigger s ource via the [EXT TRIG] connector. You can set the trigger condition within the range of trigger level (-4 V to +4 V).

AC line:

The trigger signal is obtained from the AC power input of the oscilloscope. This kind of signal source can be used to display the relationship between signal (such as illuminating device) and p ower ( power s upply d evic e). For example, to stably trigger the waveform output from the transformer of a transformer substation, which is mainly used in related measurement of the power industry.

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Trigger Mode

Trigger mode affects the way in which the oscilloscope searches for the trigger. The following is the schematic diagram of the acquis ition mem ory. As shown in the fig ure below, the position of the trigger ev ent is determined by the reference time point and the delay setting. Note that the acquisition memory of the oscilloscope is a cyclic buffer and the new data would overwrite the old data until the acquisition finishes.

Pre-trigger Buffer Post-trigger Buffer

Acquisition memory

Pre-trigger/Delayed trigger:

Acquire data before/after the trigger event. The trigger position is usually at the horizontal center of the screen. In full-screen display, seven-grid pre-trigger and delayed trigger informati on are displayed r espectively. You can adjust the horizontal position of the waveform through HORIZONTAL POSITION pre-trigger information and delayed trigger information, through which the signal information before/after the trigger (such as capture the glitch generated by the circuit and analyze the pre-trigger data to find out the reasons for glitch) can be obtained.

Press MODE in the trigger control area (TRIGGER) at the front panel or press MENU  Sweep to s elect the desired trigger mode. The corresponding st atus light of the mode currently selected turns on.

Auto:

No matter whether the trigger condition is met, there is always waveform display. A horizontal line is displayed when no signal is input. In this mode, the oscilloscope operates by first filling the pre-trigger buffer. It starts searching for a trigger after the pre-t rigger buf fe r is filled and c ontinue s t o flo w data through this buffer while it searches for the trigger. While searching for the trigger,

Trigger Event

to view more

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the oscillos cope ov erflow s t he pre-t rigger b uffer and the first d ata put into the buf fer is first p ushed out (First Input First Out, FIFO). When a trigger is found, the pre-trigger buffer would contain the data acquired just before the trigger. If no trigger is found, the oscilloscop e will trigger forcef ully. If forceful trigger is invalid, the oscilloscope still displays waveform but the wa v efor m is not s tab le; if forceful trigger is valid, the oscilloscope displays stable waveform. This trigger mode is applicable to low-repetitive-rate signals and unknown signal levels. To display DC signals, you must use a uto trigger mode. Note: When the horizontal time base is set to 50 ms/div or greater, this trigger mode allows the absence of trigger signal.

Normal:

Display waveform when the trigger condition is met; otherwise, the oscilloscope holds the original waveform and waits for the next trigger. In this mode, the oscilloscope fills the pre-trigger buffer first and then search for a trigger while at the same time continues filling data. While searching for the trigger, the oscillos cope ov erflow s t he pre-trigger buffer and the first da ta put into the buf fer is first pushed out (FIFO). When a trigger is found, the oscilloscope will fill the post-trigger buffer and display the acquisition memory. Use normal trigger mode for low-repetitive-rate signals or when auto trigger is not required. Note: In this mode, pressing FORCE can generate a trigger signal forcefully.

Single:

When this mode is selected, the backlight of SINGLE turns on. The oscilloscope waits for a trigger and displays the waveform when the trigger condition is met and then stops. Note: In this mode, pressing FORCE can generate a trigger signal forcefully.

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Trigger Coupling

Trigger coupling decid es whi ch kind of components will b e transmitted to the trigger circuit. Please distinguish it with

 DC: allow DC and AC components into the trigger path.  AC: block all the DC components and attenuate signals lower than 8 Hz.  LF Reject: block the DC compone n ts an d r e j e ct t h e lo w fr e qu en cy components

(lower than 75 kHz).

 HF Reject: reject the high frequency components (higher than 75 kHz).

Press MENU  Setting  Coupling in the trigger control area (TRIGGER) at the front panel to select the desired coupling type (the default is DC). Note that trigger coupling is only valid in edge trigger.

Channel Coupling.

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Trigger Position

Trigger Holdoff

Trigger holdoff can be used to stably trigger the complex waveforms (such as pulse series). Holdoff time is the amount of time that the oscilloscope waits before re-arming the trigger circuitry. The oscilloscope will not trigger until the holdoff time expires.

Holdoff Time

Press MENU  Setting  Holdoff in the trigger control area (TRIGGER) at the front panel and use to modify the holdoff time (the default is 100 ns) until the waveform triggers stably. The adjustable rang e of holdoff time is from 100 ns to 10 s. Note that trigger hol doff is not available for Nth edge trigger, v i deo trigger, RS232 trigger, I 2 C trigger, SPI trigger an d US B tr i gge r.

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Noise Rejection

Noise Rejection adds additional hysteresis to the trigger circuitry. Noise rejection reduces the possibility of noise trigger but also reduces the trigger sensitivity; therefore, a larger signal is required to trigger the oscilloscope.

Press MENU  Setting  Noise Reject in the trigger control area (TRIGGER) at the front panel to enable or disable noise rejection.

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Trigger Type

DS2000A provides various trigger functions, including various serial bus triggers.

 Edge Trigger  Pulse Trigger  Runt Trigger  Windows Trigger (Option)  Nth Edge Trigger  Slope Trigger  Video Trigger (HDTV Option)  Pattern Trigger  Delay Trigger (Option)  TimeOut Trigger (Option)  Duration Trigger (Option)  Setup/Hold Trigger  RS232 Trigger  I2C Trigger  SPI Trigger  USB Trigger (Option)

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Edge Trigger

Trigger on the trigger thr eshold of the specified edge of the input signal.

Trigger Type:

Press Type to select “Edge”. At t his point, the trigger set ting information as shown in the figure below is displayed at the upper right corner of the screen.

Source Selection:

Press Source to select CH1, CH2, EXT or AC Line as the Trigger Source. The current trigger source is displayed at the upper right corner of the screen. Note: Select channel with signal input as trigger source to obtain stable tri gger.

Edge Type:

Press Slope to select the kind of edge of the input signal on which the oscilloscope triggers. The curre n t e dge type is displayed at th e upper right corner of the screen.

 : trigger on the rising edge of the inp ut s ignal when the voltag e leve l mee ts

the preset trigger level.

 : trigger on t he fal ling ed ge of the inp ut s ignal when the v oltage le vel m eets

the preset trigger level.

 : trigger on the rising and falling edges of the input signal when the

voltage level meets the preset trigger level.

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigg er type as auto, normal or single. The corresp onding status light o f the current trigg er mode tu rns on.

Trigger Setting:

Press Setting to set the trigger parameters (trigger coupling, trigger hol doff and noise rejection) under this trigger type.

Trigger Level:

Trigger occurs only when the signal reaches the preset trigger level. Use TRIGGER LEVEL to modify the level. An orange trigger level line and the

trigger mark “ ” appear on the screen and m o ve up and down with t he rotation of the knob, while at the same time, the trigger level value (such as ) at the

lower left corner of the screen also changes accordingly. When stopping turning the

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knob, the trigger level line and the trigger mark disappea r i n a bout 2 s.

Pulse Trigger

Trigger on the positive or negative pulse with a specified width.

Trigger Type:

Press Type to select “Pulse”. At this point, the trigger s etting informat ion as shown in the figure below is displayed at the upper right corner of the screen.

Source Selection:

Press Source to select CH1 or CH2 as the Trigger Source. The current trigger source is displayed at the upper right corner of the screen. Note: Select channel with signal input as trigger source to obtain stable tr i gger.

Pulse Condition: Press When to select the desired pulse condition.

 : trigger when the positive pulse width of the input signal is great er than

the specified pulse width.

 : trigger when the positive puls e width of the input s ignal is lower than t he

specified pulse width.

 : trigger when the positive pulse width of the input signal is great er than

the specified lower limit of pulse width and lower than the upper limit of pulse width.

 : trigger when the neg ativ e pulse width of the inp ut signal is greater tha n

the specified pulse width.

 : trigger when the negative pulse width of the input signal is lower than

the specified pulse width.

 : trigger when the neg ativ e pulse width of the inp ut signal i s greater tha n

the specified lower limit of pulse width and lower than the upper limit of pulse width.

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Pulse Width Setting:

In this oscilloscope, positive pulse width is defined as the time difference between the two crossing points of the trigger level and positive pulse as shown in the figure below.

Trigger level

Positive

pulse width

 When the Pulse Condition is set to , , or , p ress

Setting and use to input the desired value. The ran ge availab le is from 2 ns

to 4 s.

 When the Pulse Condition is set to or , pr ess Upper Limit

and Lower Limit and use to input the desired values respectively. The range of the upper limit is from 10 ns to 4 s. The range of the lower limit is from 2 ns to 3.99 s. Note that the lower limit of the pulse width must be lower than the upper limit.

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigg er type as auto, normal or single. The corresponding status light of t he current trigger mode turns on.

Trigger Setting:

Press Setting to set the trigger parameters (trigger holdoff and noise rejection) under this trigger type.

Trigger Level:

Use TRIGGER LEVEL to modify the level. For details, please refer to the description of

Trigger Level on page 5-9.

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Runt Trigger

This trigger mode is used to trigger pulses that pass through one trigger level but fails to pass through the other trigger level as shown in the figure below.

Trigger Type:

Press Type to select “Runt”. At this point, the trigger set ting inf ormation as shown in the figure below is displayed at the upper right corner of the screen.

Source Selection:

Press Source to select CH1 or CH2 as the Trigger Source. The current trigger source is displayed at the upper right corner of the screen.

Pulse Polarity: Press Polarity to select the pulse polarity of runt trigger.

 : positive polarity. The instrument triggers on the positive runt pulse.  : negative polarity. The instrument triggers on the negative runt pulse.

Qualifier: Press Qualifier to set the trigger conditions of runt trigger.

 None: do not set the trigger condition of runt trigger.  >: trigger when the runt pulse width is greater than the lower limit of pulse

width. Press Lower Limit to set the minimum pulse width of runt trigger. The range available is from 2 ns to 4 s.

 <: trigger when the runt pulse width is lower than th e upper limit of pulse width.

Press Upper Limit to set the maximum pulse width of runt trigger. The range

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available is from 2 ns to 4 s.

 <>: trigger when the run t p ulse width is greater than the lower limit and lower

than the upper limit of pulse width. Press Upper Limit to set the maxi mu m pulse width of runt trigger and the range is from 10 ns to 4 s; pre s s Lower Limit to s et the m inim um puls e wid th of runt trigg er a nd the ra nge is f rom 2 ns to 3.99 s. Note: The lower limit of the pulse width must be lower than the upper limit.

Vertical Window:

Press Vertical to select the desired vertical window type. Note that under the “Runt trigger” menu, you can press the trigger level knob continuously to switch among different vertical window types. You can select the boundary of the trigger level to be set and then use Trigger LEVEL to adjust the trigger level. During the adjustment, two orange trigger level lines and trigger marks ( and ) appear on the screen and move up and down with the rotation of the knob. At the same time, the current trigger level values are displayed at the lower left corner of the screen. The trigger level lines and trigger marks disappear after you stop rotating the knob for about 2 s.

The adjustment mode of the trigger level differs when different vertical window is selected.

 : only adjust the upper limit of the trigger level. During the adjustment,

the “Up Level” changes accordingly and “Low Level” remains unchanged.

 : only adjust the lower limit of the trigger level. During the adjustment,

the “Low Level” changes accordingly and the “Up Level” remains unchanged.

 : adjust the upper and lower limits of the trigger level at the same time.

During the adjustment, the “Up Level” and “Low Level” change accordingly.

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigg er type as auto, normal or single. The corresponding status light of t he current trigger mode turns on.

Trigger Setting:

Press Setting to set the trigger parameters (trigger holdoff and noise rejection) under this trigger type.

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Windows Trigger (Option)

Windows trigger provides a hig h t rigge r level and a l ow trigg er lev el. The inst rument triggers when the input signal pas ses through the high trigger level or the low trigger level.

Trigger Type:

Press Type to select “Windows”. At this point, the trigger setting information as shown in the figure below is displayed at the upper right corner of the screen.

Source Selection:

Windows Type:

Press WndType to select the kind of edge of the input signal on which the oscilloscope triggers.

 : trigger on the rising edge of the input signal when the voltage level is

greater than the preset high trigger level.

 : trigger on the falling edge of the input signal when the voltage level is

lower than the preset low trigger level.

 : trigger on any edge of the input signal when the voltage level meets the

preset trigger level.

Trigger Position:

After selecting the windows type, press Position to further s pec ify the tim e point of trigger by selectin g th e t r igger position.

 Enter: trigger when the trigger signal enters the specified trigger level range.  Exit: trigger when the input signal exits the specified trigger level range.  Time: used to specify the hold time of the input signal after entering the

specified trigger le vel range. The instrument triggers when the accumulated hold time equals the windows time.

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Vertical Window:

Press Vertical to select the desired vertical w in dow type. For detai l e d o peration , referto

Vertical Window:

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigg er type as auto, normal or single. The corresponding status light of t he current trigger mode turns on.

Trigger Setting:

Press Setting to set the trigger parameters (trigger holdoff and noise rejection) under this trigger type.

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P3M

P1/P2/P3<Idle Time<M

Edge Type=

Edge Num=2

Nth Edge Trig ger (Option)

Trigger on the nth edge that appears after the specified idle time, as shown in the figure below.

Trigger Type:

Press Type to select “Nth Edge”. At this point, the trigger setting information as shown in the figure below is displayed at the upper right corner of the screen.

Source Selection:

Edge Type:

Press Slope to select the kind of edge of the input signal on which the oscilloscope triggers.

 : trigger on the rising ed ge of the input s igna l when the v oltage lev el mee ts

the specified trigger level.

 : trigger on the f alling edge of the input signal whe n t he voltag e level meets

the specified trigger level.

Idle Time:

Press Idle to set the idle time before the edge counting in Nth egde trigger. The range available is from 16 ns to 4 s.

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Edge Number:

Press Edge to set the v alue of “N” in Nth edge trigg er and the range av ailable is from 1 to 65535.

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigg er type as auto, normal or single. The corresponding status light of t he current trigger mode turns on.

Trigger Setting: Press Setting to set the trigger parameter (noise rejection) under this trigger type.

Trigger Level:

Use TRIGGER LEVEL to modify the level. For details, please refer to the description of

Trigger Level on page 5-9.

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Slope Trigger

Trigger on the positive or negative slope of specified time.

Trigger Type:

Press Type to select “Slope”. At this point, the trigger setting information as shown in the figure below is displayed at the upper right corner of the screen.

Source Selection:

Slope Condition: Press When to select the desired slope condition.

 : trigger when the positive slope time of the input signal is greater than

the specified time.

 : trigger when the positive slope time of the input signal is lower than

the specified time.

 : trigger when the positive slope time of the input signal is greater than

the specified lower limit of time and lower than the specified upper lim it of time.

 : trigger when the negative slope ti me of the input signal is greater t han

the specified time.

 : trigger when the negative slope time of the input signal is lower than

the specified time.

 : trigger when the negative slope ti me of the input signal is greater t han

the specified lower limit of time and lower than the specified upper lim it of time.

Time Setting:

In this oscilloscope, positive sl ope time is defined as the t ime dif ference be tween t he two crossing points of trigger level line A and B with the positive edge as shown in the figure on the next page.

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gValueTimeSettin

LowLevelUpLevel

SlewRate

−

imitTimeLowerL

LowLevelUpLevel

imitTimeUpperL

LowLevelUpLevel

SlewRate

−−

The upper limit of trigger level (Up Level)

The lower limit of trigger level (Low Level)

Positive

Slope time

 When the Slope Condition is set to , , or ,

press Time and use to input the desired value. The range available is from 10 ns to 1 s.

 When the Slope Condition is set to or , press Upper Limit

and Lower Limit and use to input the desired values respectively. The range of time upper limit i s from 20 ns to 1 s . The r ange of the time lowe r limit i s from 10 ns to 999 ms. Note that the time lower limit must be lower than the upper limit.

Vertical Window:

Press Vertical to select the desired vertical window. Note that under the “Slope” trigger menu, you can also press down the trigger level knob continuously to switch the vertical window. You can select the boundaries of the trigger level and then use TRIGGER LEVEL to adjust the trigger level. During the adjustment, two orange trigger level lines and two trigger marks ( and ) appear on the screen and move up and down with the rotation of the knob, while at the same time, the trigger level value and the slope value are displayed at the lower left corner of the screen. When stopping turning the knob, the trigger level lines and trigger marks disappear in

about 2 s. When the Slope Condition is set t o or , the current trigger level and slope range will be displayed at the lower left corner of the screen.

The adjustment mode of the trigger level is different when different vertical window is selected.

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 : only adjust the upper limit of the trigger level. During the adjustment,

“UP Level” and “Slew Rate” change acc o rdingly but “Low Level” remains unchanged.

 : only adjust the lower limit of the trigger level. During the adjustment,

“Low Level” and “Sle w Rate” change accordingly bu t “UP Level” remains unchanged.

 : adjust the upper and lower limits of the trigger level at the same time.

During the adjustment, “UP Level” and “Low Level” change accordin gly bu t “Slew Rate” remains unchanged.

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigg er type as auto, normal or single. The corresponding status light of the current trigger mode tu rns on.

Trigger Setting:

Press Setting to set the trigger parameters (trigger holdoff and noise rejection) under this trigger type.

DS2000A User’s Guide

Rigol DS2072A, DS2072A-S, DS2102A, DS2102A-S, DS2202A User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Guaranty and Declaration

Safety Requirement

General Safety Summary

Safety Terms and Symbols

Allgemeine Sicherheits Informationen

Sicherheits Begriffe und Symbole

Measurement Category

Ventilation Requirement

Working Environment

General Care and Cleaning

Environmental Consideratio ns

DS2000A Series Overview

Document Overview

General Inspection

Appearance and Dimensions

To Prepare the Oscilloscope for Use

To Adjust the Supporting Legs

To Connect to Power Supply

Power-on Inspection

To Connect the Probe

Function Inspection

Probe Compensation

Front Panel Overview

Rear Panel Overview

Front Panel Function Overview

VERTICAL

HORIZONTAL

TRIGGER

CLEAR

RUN/STOP

SINGLE

AUTO

Knob

Navigation K n ob

Menu

Source

Record

Print

User Interface

To Use the Security Lock

To Use the Built-in Help System

To Enable the Channel

Channel Coupling

Bandwidth Limit

Probe Ratio

Input Impedance

Waveform Invert

Vertical Scale

Vertical Expansion

Amplitude Unit

Channel Label

Delay Calibration

Delayed Sweep

Time Base Mode

Y-T Mode

X-Y Mode

Roll Mode

Horizontal Scale

Horizontal Reference

Acquisition Mode

Normal

Average

Peak Detect

High Resolution

Sample Mode

Sample Rate

Memory Depth

Antialiasing

Trigger Source

Trigger Mode

Trigger Coupling

Trigger Holdoff

Noise Rejection

Trigger Type

Edge Trigger

Pulse Trigger