Rigol MSO4000, DS4000 User Manual

RIGOL

User’s Guide

MSO4000/DS4000 Series Digital Oscilloscope

Oct. 2013

RIGOL Technologies, Inc.

RIGOL

I

Guaranty and Declaration

Copyright

© 2013 RIGOL Technologies, Inc. All Right s Re s erved.

Trademark Information

RIGOL is a registered trademark of RIGOL Technologies, Inc.

Publication Number

UGA15103-1110

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 for losses caused by either incidental o r consequenti al

in connection with the fu r nis hing , use or perfo rman ce of this manual as well as
any information contained.

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

rearranged without prior written approval of RIGOL.

Product Certification

RIGOL guar antees this pr oduct confo rms to the national and industrial standards in
China as well as the ISO9001: 2008 standard and the ISO14001: 2004 standar d.
Other international standard conformance certifications are in progress.

Contact Us

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

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II

Safety Requirement

General Safety Summary

Please review the following safety precautions carefully before putting the
instrument into operation so as to avoid any personal injuries or damages to the
instrument and any product connecte d to it. To prevent potential haza rds, please use
the instrument as specified in this manual.

Use Proper Power Cord.

Only use the power cord designed for the instrument and authorized for use within
the local country where the product is being used.

Ground The Instrument.

The instrument is grounded through the Protective Earth lead of the power cord. To
avoid ele ctric sh ock, it is e ssential to conne ct the ear th terminal of power co rd to the
Protective Earth terminal before any inputs or outputs.

Connect The Probe Properly.

Do not connect the ground lead to high voltage.

Observe All Terminal Ratings.

To avoid fire or shock hazard, observe all ratin gs and mark ers on the inst rument and
check your manual for more information about ratings before connecting.

Use Proper Overvoltage Protection.

Make sure that n o ov erv oltage (such as that produced by a thunderstorm) can reach
the product, or else the operator might expose to danger of electrical shock.

Do Not Operate Withou t Co v e rs.

Do not operate the instrument with covers or panels removed.

Change The Power Fuse.

If the power fuse needs to be changed, please return the instrument back to our
factory and the RIGOL authorized operator will change it for you.

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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 especially to circuits or accessories must be performed by RIGOL
authorized personnel.

Keep Well Ventilation.

Inadequate ventilation may cause increased temperature or damage 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 short circuiting t o the interi or of the device or electric shock, please
do not operate in a humid environment.

Do Not Operate in an Explosive Atmosphere.

In order t o a voi d da mage s to t he de vi ce or pers ona l injury, it is important to operate
the device away fr om an exp losive a tmosphere.

Keep Product Surfaces Clean and Dry.

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

Electrostatic Prevention.

Minimize electrostatic discharge to avoid damage induced by static discharges.
Always ground both the internal and external condu ctors of cables to neutralize static
before making connections.

Handling Safety.

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

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IV

CAUTION

indicates a potential dama ge to the inst rument or ot her property mi ght

Hazardous

Protective

Chassis

Test

Safety Terms and Symbols

Terms in this Ma n ual. The following terms may appear in this manual:

WARNING

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

Caution statements indicate conditions or practices that could result in
damage to this product o r other property.

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

DANGER
WARNING indicates an injury or hazard may occur.
CAUTION

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

indicates an injury or hazard may immediately happen.

occur.

Voltage

Safety
Warning

Earth
Terminal

Ground

MSO4000/DS4000 User’s Guide

Ground

RIGOL

V

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 zugelass ene u nd genehm igte
Netzkabel.

Erden des Gerätes.

Das Gerät ist durch den Schutzleiter im Netzkabel geerdet. Um Gefahren durch
elektrischen Schlag zu vermeiden , ist es unerlässlich, die Erdung durchzuführen. Erst
dann dürfen weitere Ein- oder Aus gä nge 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. Bef olgen Sie die Bedienun gsanleitung 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 nicht i m Fehlerfall

Wenn Sie am Gerät einen Defekt vermuten, sorgen Sie dafür, bevor Sie das Gerät
wieder betreiben, dass eine Untersuchu ng durch qual ifiziertes Kundendienstpersonal
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 betreiben

Zur Vermeidun g von Kurzschluß im Geräteinne ren und Stromschlag betreiben Sie das
Gerät bitte niemals in feuchter Umgebung.

Nicht in explosiver Atmosphäre betreiben

Zur Ve rm e idung von Person e n - u nd Sachs chä den ist es unumgä ngli ch, das Ger ät
ausschließlich fernab jedweder explosiven At mosphäre 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 der V erbindungsleitung, um st atische Aufladung zu entladen.

Sicherer Transport

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

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WARNING

Schäden oder den Tod von Personen zur Folge haben können.

CAUTION

Schäden am Gerät hervorrufen können.

DANGER

weist auf eine Verletzung ode r Gefäh r dun g hin, die s ofort
geschehen kann.

WARNING

weist auf eine Verletzung oder Gefäh rdung hin, die möglicherweise
nicht sofort geschehen.

CAUTION

bedeutet, dass eine mögliche Beschädigung des Instruments 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

Measurement Category

The MSO4000/DS4000 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 M AINS. Examples are me a s urements on circuits no t de rived from
MAINS, and specially protected (internal) MAINS derived circuits. In the latter case,
transient stresses are variable. For that reason, the transient limit capability of the
equipment is made known to the user.

Measurement category II is for measurements performed on circuits directly
connected to a low voltage installation. Examples are measurements on household
appliances, portable tools and similar equipment.

Measuremen t c ategory III is for measurements performed in building installations.
Examples are measurements on distribution boards, circuit-breakers, w iring,
including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed
installation, equipment for industrial use and Stationary motors with permanent
connection to a fixed installation.

Measurement category IV is for measurements performed at the source of a
low-voltage installation. Examples are electricity meters and measurements on
primary overcurr e n t prot ec ti on devices and ripple control units.

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WARNING

Ventilation Requirement

This oscilloscope uses f ans to force cooling. Please make su re t hat the ai r int ak e a nd
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 a temperature increase which can
damage the instrument. So please keep the instrument well ventilated
during operation and inspect the intake and fan regularly.

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X

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

To avoid short circuits or electric shock, please do not 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 a thunderstorm)
can reach the product, or else the operator might be exposed to the
danger of electric shock.

Installation (overvoltage) Categor y 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. An occasional
and temporary conductive environment may caused by condensation. Fo r example, a
general indoor environment.
Pollution degree 3: Conductive pollution occurs, or dry, non-conductive pollution
occurs which becomes conductive due to condensation. For example, a Sheltered
outdoor environment.
Pollution degree 4: Pollution that generates persistent conductivity through
conductive dust, rain, or snow. Fo r example, outdoor locations.

Safety Class

Class 1 – Grounded Product

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XII

General Care and Cleaning

General Care:

Do not store or leave the instrument at places where the instrument will be 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 loose dust on the outside of t he instrument with a lint - free cloth (with

mild detergent or water). When cleaning the LCD, take care to avoid scratching
it.

CAUTION

To avoid damage to th e instrument, do no t e x pose to corrosive liquids.

WARNING

To avoid injury resulting from short circuit, make sure the instrument is
completely dry before reconnecting it to a pow e r s ou r ce.

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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/E C on waste electrical
and electronic equipment (WEEE).

Product End-of-Life Handling

The equipment may contain substances that could b e harmf ul t o the envi ronm ent or
human health. In order to avoid release of such substances into 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

MSO4000/DS4000 Series Overview

MSO4000/DS4000 is a multifunctional and high performance digital oscilloscope
developed using of the RIGOL Ultra Vision chipset. MSO4000 series is a
high-performance mixed-signal oscilloscope which is optimized for the debugging in
embedded design and test areas that require simultaneous measurement of both
analog and digital signals. The MSO4000 provides superb specifications, convenient
functions, and easy-to-use design which help users fulfill their tasks (such as
measu rement and remote control) more quickly.

Main feature s:

 500 MHz, 350 MHz, 200 MHz and 100 MHz bandwidth
 2 +16 chann el or 4 +16 channel MSO4000 series digital oscilloscope
 Dual-channel or 4-channel model DS 4000 series digital oscilloscope
 Analog channel sample rates up to 4 GSa/s, 140 Mpts maximum memory depth

(standard). Digital channel sample rates up to 1 GSa/s, 28 Mpts maximum
memory depth (per channel)

 110,000 wfms/s (digital channels are turned off) maximum waveform refresh

rate or 85,000 wfms/s (digital channels are turned on, dots displa y) maximum
waveform refresh rate

 Ultra Vision technology
 9.0 inch, WVGA (800*480) 160,000 color TFT LCD , wit h ultra-wide screen, vivid

picture, low power consumption and long service life

 Automatic probe identification
 Adjustable brightness of analog channel waveform
 Auto setting of waveform display (AUTO)
 Various trigger functions including multiple protocol triggers and supporting

digital channels as trigger source

 Support standard parallel decoding, multiple serial decoding options and mixed

decoding for analog and digital channels

 Auto measurements of 24 waveform parameters and measurement functions

with statistics

 Real-time waveform recording, waveform playback, record open (constant on)

and waveform analysis, supporting digital channels recor ding and play back

 Precise delayed sweep function
 Built-in FFT function

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 Built-in logic analyzer function
 Pass/Fail test function
 Multiple waveform math o peration functions
 Standard configuration i n t e rfaces: USB Device, dual US B Host, LAN and GPIB

(optional)

 Support USB storage device and printer
 Conforms to LXI-C instrument standards which enable quick, economic and

efficient creation and reconfig uratio n of test system

 Supports remote command control
 Embedded help enables easier information access
 Supports multiple languages and Chinese/English input
 Supports one-key measurement, storage and print
 Convenient digital channel grouping and operating functions

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XVI

Document Overview

1

Quick Star t

Provides information about preparations before using the instrument and a brief
introduction of the instrument.

To Set the Vertical System

2

Introduces the functions of the vertical system of the oscilloscope.

To Set the Horizontal System

3

Introduces the functions of the horizontal system of the oscilloscope.

To Set the Sample System

4

Introduces the functions of the sample system of the oscilloscope.

To Trigger the Oscilloscope

5

Introduces the trigger mode, trigger coupling, trigger holdoff, external trigger and
various trigger types of the oscilloscope.

To Make Measurements

6

Introduces how to make math oper a t i on, cursor and auto measurements.

Logic Analyzer

7

Introduces how to use the logic analyzer function.

Protocol Decoding

8

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

Reference Waveform

9

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

Pass/Fail Test

10

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

Waveform Record

11

Introduces how to analyze the input signal using waveform re co rding.

Display Control

12

Introduces how to control the display of the oscilloscope.

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Logo

Knob

Logo

Knob

Multi-function
Knob

Vertical Scale
Knob

Navigation
POSITION

Vertical Position
SCALE

Horizontal

Trigger Level
POSITION

Horizontal

13 Store and Recall

Introduces how to store and recall the measurement result and the setting of the
oscilloscope.

System Function Setting

14

Introduces ho w to set the remote interface and system-related functions.

Remote Control

15

Introduces how to control the oscilloscope remotely.

Troubleshooting

16

Introduces how to deal with common failures of the oscilloscope.

Specifications

17

Lists the specifications and general specifications of the oscilloscope.

Appendix

18

Provides common information such as options and accessories.

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 “Character Shading + Menu Word (Bold)”.
For example, Storage.
Operation steps: denoted by the arrow “”, for example, Storage  Storage.
Link: denoted by the format of “Blue Characters (Bold + Underline d)”. For example,

Stor e and Recall.

Knob:

MSO4000/DS4000 User’s Guide

HORIZONTAL

HORIZONTAL

Knob

Scale Knob

Position Knob

VERTICAL SCALE
VERTICAL

TRIGGER LEVEL

——

Knob

Knob

——

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Content Con v entions in this Manual:

This manual takes the MSO4054 for all examples and the descriptions here contains
the functions and performance of other models. The MSO4000 and DS4000 series
includes the following models:

Model

MSO4054 500MHz 4 250MHz 16
MSO4052 500MHz 2 250MHz 16
MSO4034 350MHz 4 250MHz 16
MSO4032
MSO4024
MSO4022
MSO4014 100MHz 4 250MHz 16
MSO4012 100MHz 2 250MHz 16
DS4054 500MHz 4
DS4052 500MHz 2
DS4034 350MHz 4
DS4032 350MHz 2
DS4024 200MHz 4
DS4022 200MHz
DS4014 100MHz
DS4012 100MHz

Analog
Bandwidth

350MHz
200MHz
200MHz

Analog
Channels

2
4
2

2
4
2

Digital
Channel
Bandwidth

250MHz
250MHz
250MHz

—— ——
—— ——
—— ——
—— ——
—— ——

——
——
——

Digital
Channels

16
16
16

——
——
——

Note: The content related to the logic analyzer (digital channels) in this document
only applies to MSO4000 mixed signal digital oscilloscope.

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Contents

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

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

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

Safety Terms and Symbols ....................................................................... IV

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

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

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

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

Working Enviro nment ............................................................................... X

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

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

MSO4000/DS4000 Seri es Over vie w ..................................................... XIV

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

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

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

Appearance and Dim ensions ................................................................... 1-3

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

To Remove the Cover ...................................................................... 1-4

To Adjust the Supporting Legs .......................................................... 1-5

To Connect to AC Power Supply ........................................................ 1-6

Power-on Inspection ....................................................................... 1-7

To Connect the Probe ...................................................................... 1-8

Function Inspection ......................................................................... 1-9

Probe Compensation ...................................................................... 1-11

To Connect the Logic Probe ............................................................ 1-12

Front Panel Overview ............................................................................ 1-13

Rear Panel Overview ............................................................................. 1-14

Front Panel Function Overview............................................................... 1-16

VERTICAL ..................................................................................... 1-16

HORIZONTAL ................................................................................ 1-17

TRIGGER ...................................................................................... 1-18

CLEAR .......................................................................................... 1-18

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AUTO ........................................................................................... 1-19

RUN/STOP .................................................................................... 1-19

SINGLE ......................................................................................... 1-19

Multi-function Knob ........................................................................ 1-20

Navigation Knob ............................................................................ 1-20

Default ......................................................................................... 1-21

Print ............................................................................................. 1-21

Function Keys ................................................................................ 1-21

Record .......................................................................................... 1-22

LOGIC ANALYZER .......................................................................... 1-23

User Interface ...................................................................................... 1-24

To Use the Security Lock ....................................................................... 1-29

To Use the Built-in Help System ............................................................. 1-30

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

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

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

Bandwidth Limit ..................................................................................... 2-4

Probe .................................................................................................... 2-5

Input Impe da nce ................................................................................... 2-7

Waveform Invert .................................................................................... 2-7

Vertical Scale ......................................................................................... 2-8

Vertical Expansion .................................................................................. 2-9

Amplitude Unit ....................................................................................... 2-9

Channel Label ...................................................................................... 2-10

Delay Calibration .................................................................................. 2-11

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 ........................................................................................ 3-5

Roll Mode ....................................................................................... 3-8

Horizontal Scale ..................................................................................... 3-9

Horizontal Reference ............................................................................ 3-10

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

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

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

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

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

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

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

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

LA Sample Rate ..................................................................................... 4-8

Memory Depth ...................................................................................... 4-9

Antialiasing .......................................................................................... 4-10

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

Trigger Sou rce ...................................................................................... 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 Trigger ................................................................................. 5-11

Runt Trigger .................................................................................. 5-13

Nth Edge Trigger............................................................................ 5-15

Slope Trigger ................................................................................. 5-17

Video Trigger ................................................................................. 5-20

Pattern Trigger .............................................................................. 5-22

RS232 Trigger ................................................................................ 5-24

I2C Trigger .................................................................................... 5-26

SPI Trigger .................................................................................... 5-29

CAN Trigger ................................................................................... 5-31

FlexRay Trigger .............................................................................. 5-34

USB Trigger ................................................................................... 5-36

Trigger Output Connector ...................................................................... 5-38

6 To Mak e Measurements ..................................................................... 6-1

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

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

Substraction ................................................................................... 6-3

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

Division .......................................................................................... 6-4

FFT ............................................................................................... 6-5

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Logic Operation ............................................................................... 6-8

Advanced Operation ....................................................................... 6-10

Auto Measurement ............................................................................... 6-13

Quick Measurement after AUTO ...................................................... 6-13

One-key Measurement of 24 Parameters .......................................... 6-14

Frequency Counter Measurement .................................................... 6-19

Measurement Setting ..................................................................... 6-20

To Clear the Measurement .............................................................. 6-22

All Measurement ............................................................................ 6-23

Statistic Function ........................................................................... 6-24

Measurement History ..................................................................... 6-25

Cursor Measurement ............................................................................ 6-26

Manual Mode ................................................................................ 6-27

Track Mode ................................................................................... 6-31

Auto Mode .................................................................................... 6-34

X-Y Mode ...................................................................................... 6-35

7 Logic Analyzer ................................................................................... 7-1

To Select the Logic Channel .................................................................... 7-2

To Turn on/off the Logic Channel ............................................................. 7-2

Group Setting ........................................................................................ 7-3

To Set the Waveform Size ....................................................................... 7-3

Automatic Arrangement Setting ............................................................... 7-4

To Set the Threshold .............................................................................. 7-4

To Use the Digital Bus ............................................................................ 7-5

To Set the Label ..................................................................................... 7-6

Delay Calibration .................................................................................... 7-6

8 Protocol Decoding ............................................................................. 8-1

Parallel Decoding ................................................................................... 8-2

RS232 Decodi n g (Option) ....................................................................... 8-5

I2C Decoding (Option) .......................................................................... 8-10

SPI Decoding (Option) .......................................................................... 8-13

CAN Decoding (Option) ......................................................................... 8-16

FlexRay Decoding (Option) .................................................................... 8-19

9 Reference Waveform ......................................................................... 9-1

To Enable REF Function .......................................................................... 9-2

To Set the Color ..................................................................................... 9-3

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To Select REF Source ............................................................................. 9-3

To Save to Internal Memory ................................................................... 9-3

To Adjust REF Waveform Display ............................................................. 9-4

To Export to Internal or External Memory ................................................ 9-4

To Import fro m In t e rnal or External Memory ............................................ 9-4

10 Pass/Fail Test ................................................................................ 10-1

To Enable Pass/Fail Test ........................................................................ 10-2

To Select Source................................................................................... 10-3

To Create Mask .................................................................................... 10-3

Test and Ouput .................................................................................... 10-4

To Save the Test Mask .......................................................................... 10-5

To Load the Test Mask .......................................................................... 10-5

11 Waveform Record .......................................................................... 11-1

Waveform Record ................................................................................. 11-2

Record Constant O n.............................................................................. 11-4

Waveform Playback .............................................................................. 11-5

Waveform Analysis ............................................................................... 11-7

Analysis Based on Trace ............................................................... 11-10

Analysis Based on Pass/Fail Mask................................................... 11-11

12 Display Control ............................................................................... 12-1

To Select the Display Type ..................................................................... 12-2

To Set the Persistence Time .................................................................. 12-3

To Set the Waveform Brightness ............................................................ 12-5

To Set the Screen Grid .......................................................................... 12-5

To Set the Grid Brightness ..................................................................... 12-5

To Set the Menu Display ........................................................................ 12-5

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

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

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

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

External Storage and Recall ................................................................... 13-8

Disk Management ............................................................................... 13-12

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

To Create a New File or Folder ...................................................... 13-14

To Delete a File or Folder .............................................................. 13-17

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To Rename a File or Folder ........................................................... 13-18

To Clear the Local Memory ........................................................... 13-18

Factory.............................................................................................. 13-19

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

Remote Int e rface 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

Self-test Information .................................................................... 14-10

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

Error Informa t ion ......................................................................... 14-11

Self-calibration ............................................................................ 14-12

Power Status ............................................................................... 14-13

External Trigger Impedance .......................................................... 14-13

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

Reference Clock ........................................................................... 14-15

Option Management .................................................................... 14-16

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 and Options ..................................................... 18-1

Append i x B: Warranty ........................................................................... 18-3

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

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1 Quick Start

This chapter introduces the oscilloscope, the front panel, rear panel and user
interface as well as the built-in help system.

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 ele ctrica l and mechanical tests.

The consigner or carrier shall be liable for the damage to instrument resulting
from shipment. RIGOL woul d n ot 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 l is t s. If t he acces sories
are incomplete or damaged, please con t act your RIGOL sales representative.

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Appearance and Dimensions

Figure 1-1 Front View Unit: mm

Figure 1-2 Side View Unit: mm

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To Prepare the Oscilloscope for Use

To Remove the Cover

Before using the oscilloscope, remove the front panel cover by grasping the tabs on
each side and pull them in the arrow directions as shown in the figure below.

Figure 1-3 To Remove the Cover

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To Adjust the Supporting Legs

For bette r observ at ion, a djust the supporting legs. Unfold or fold the supporting le gs
in the arrow directions as shown in the figures below.

Figure 1-4 To Adjust the Supporting Legs

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AC Power Input Terminal

To Connect to AC Power Supply

This oscilloscope accepts two kinds of AC power supplies: 100-127V, 45-440Hz and
100-240V, 45-65Hz. Please use the power cord supplied with the accessories to
connect the oscilloscope to the power source as shown in the figure b elow. Turn on
the power switch under the power plug. At this point, the oscilloscope is energized
and the power key

at the lower-left corner of the front panel will pulse.

Figure 1-5 To Connect to AC Power Supply

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Power-on Inspection

When the oscilloscope is energized, press the power key
corner of the front panel to start the oscilloscope. During the start-up process, the
oscilloscope performs a series of self-tests and you can hear the sounds of relay
switching. After the self-test is finished, the welcome screen is dis played and you can
view the Option Type, Option Name, Option Edition and the remaining trail time
available in the “Installed Options” pop-up dialog box on the screen if the trail
versions of options a re cu rrently installed on the inst rument. W hen the inst rument is
shipped, a trial version of all options are provided with about 2000 minutes of
on-time. Press Utility  System  SelfTestInfo to view the self-test results.

a t the low er-left

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To Connect the Probe

RIGOL provides passive and active probes for the MSO4000/DS4000 series
oscilloscopes. For detailed technical information, please refer to the corresponding
Probe User’s Guide. The following a re the pro bes rec ommended f or this oscillos cope.

Model Description

RP3500 500 MHz, passive probe, standard, auto detection
RP7150 1.5 GHz, active probe, optional, auto detection

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 probe tip to the circuit point to be tested and connect the ground
alligator clip of the probe to the circuit ground terminal.

Figure 1-6 To Connect the Probe

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Function Inspection

1. Press Default to restore the oscilloscope to its default configuration.

2. Connect the ground alligator cli p 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 1-7 To Use the Compensation Signal

4. Press AUTO.

5. Observe the wa vef orm o n the dis play. In normal condition, the display s houl d be
a square waveform as shown in the figure below:

Figure 1-8 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 “

Probe

Compensation” in the next section.

WARNING

To avoid electric shock, pl ease make su re that the insulate d wire o f the
probe is in good condition and do not touch the metallic part of the
probe when the probe is connected to a high vol t ag e source.

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Tip

probe compensation adjustment and can not be used for calibration.

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

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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-compensa ted or poorly
compensate d probes may increase measurement error. The probe compensation
procedures are as follows:

1. Perform steps 1, 2, 3 and 4 of “

2. Check the wavefor ms displayed and compare them with the following.

Over compensated Perfectly compensated Under compensated

Figure 1-9 Probe Compensation

3. Use a nonmetallic driver to adjust the variable capacitor on the probe until the
waveform displayed is as the “Perfectly compensated” in the figure above.

Function Inspection” in the previous section.

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To Connect the Logic Probe

RIGOL provides a logic probe for the MSO40 00 series digital oscilloscope. For
detailed technical information of the logic probe, please refer to the corresponding
logic probe User’s Guide.

Connect the logic probe single head to the digital channel input connector [LOGIC
D0-D15] at the front panel of the MSO4000 series digital oscilloscope. Note:
connect the logic probe adaptor to the corresponding branch header (called channel
group) before connecting the logic probe to the device under test.

Figure 1-10 To Connect the Logic Probe

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Front Panel Overview

1 2 3 4 5 6 7 8 9 10

11

12

13 14 15 16 17 18 19 20 21 22

Figure 1-11 Front Panel Overview

Table 1-1 Front Panel Description

No. Description No. Description

1 Menu 12 Record
2 LCD 13 Power Key
3 Multi-function Knob 14 USB HOST
4 Navigation Knob 15 Digital Channel Input Terminal
5 HORIZONTAL 16 Function Setting Menu Softkeys
6 CLEAR 17 VERTICAL
7 AUTO 18 Analog Channel Input Terminals
8 RUN/STOP 19 Function Menu Keys
9 SINGLE 20 TRIGGER
10 Default&Print 21 EXT TRIG Input Terminal
11

LOGIC ANALYZER

22 Probe Compensation Signal Output

Terminal/Ground Terminal

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Rear Panel Overview

1 2 3 4 5 6 7 8

Figure 1-12 Rear Panel Overview

1. Trig Out/Ca libration

Various kinds of signals can be output from this connector (press Utility 
AuxOutput to select the desired output type).

1) TrigOut: the oscill oscope sources a signal which has a frequency

proportional to the trigger rate of the instrument. Connect the signal to the
waveform display device and measure the frequency of the signal, the
measurement result is the same as the current capture rate.

2) Fast: the oscilloscope out puts a fast edge signal with 500 ps rise time which
can be used in the self-calibration of the oscilloscope.

3) GND: the oscilloscope ground voltage level.

4) PassFail: the oscilloscope outputs a TTL high level when a failed waveform

is detected and low level at the beginning of the next waveform. This signal
can be transmitted to other control system for easy view of the test result.

2. Reference Clock

Provides a more precise sample clock signal for the oscilloscope. It can also

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1-15

synchronize two or more oscilloscope clocks.

3. Video Output

Through this interface, t he os cillosco pe can be connected to an external monito r
for clearer waveform display. Note that the display of the oscilloscope is still
operational when connected to an external monitor.

4. LAN

Through this interface, the oscilloscope can be connected to the local area
network for remote control.

5. USB DEVICE

Through this interface, t he oscilloscope can be co nnected to pri nter or PC to print
data waveforms or to control the oscilloscope using remote PC software.

6. USB HOST

Through this interface, the oscilloscope can be connected to printer or USB
storage device to print waveform dat a or store waveform files. GPIB interface
communication can be realized using the USB-GPIB interface con verter provide d
by RIGOL. Note that there is also a USB HOST interface at the front panel.

7. Lock Hole

Use a security lock (available separately) to lock the oscilloscope to a fixed
location.

8. AC Input/Switch

AC power input terminal. The power supply require ments of this oscillos cope are
100-127 V, 45-440 Hz and 100-240 V, 45-65 Hz. Please connect the oscilloscope
to AC power using the power cord provided with the accessories. Then, turn on
the AC power switch to energize the oscilloscope. Press the power ke y at the
front panel to start the oscilloscope.

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Front Panel Function Overview

VERTICAL

The MSO4000/DS4000 p ro vides in dependent ve rtic al cont rol systems f or each of the
four analog input channels.

 CH1, CH2, CH3, CH4: analog input channels. The four channels are marked

by differe nt colo rs which are als o use d to ma rk the c orrespon ding w ave forms on
the screen and the channel input connectors. Press any key to open the
corresponding channel menu and press again to turn off the channel.
AC: illuminated when AC channel coupling is enabled.
50: illuminated when the channel input impedance is 50Ω.
BW: illuminated when bandwidth limit is enabled.

 MATH: press this key to open the math operation menu under which (add,

subtract, multiply, divide) oper ati o ns, FFT opera tion, logic operation and
advanced operation are provided.

 REF: press this key to enable the reference waveform function to compare the

waveform actually tested with the referenc e wav eform.

 VERTICAL POSITION: vertical position knobs. During the modification,

the position label at the lowe r left corner of the sc reen would change accordingly.
Turn clockwise to increase the position and counterclockwise to decrease. Press
down the knob to quickly reset the vertical position.

 VERTICAL SCALE: vertical scale knobs. During the modification, the scale

label at the bottom of the screen would change accordingly. Turn clockwise to

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decrease the scale with a step of 5-2-1 and turn counterclockwise to increase
with a step of 1-2-5. Press down the knob to switch the vertical scale adjustment
mode between “Coarse” and “Fine”.

 Decode1 and Decode2: decoding function keys. Press the corresponding key

to open the decoding function menu. MSO4000/DS4000 supports parallel
decoding and p rotocol decoding (for more details, refer to “

Protocol

Decoding”).

HORIZONTAL

 MENU: press this key to open the horizo ntal control menu with which users can

turn on or off the delayed sweep function, switch between different time base
modes, switch between “Coarse” and “Fine” adjustments 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. During the
modification, waveforms of all the channels will be displayed in expanded or
compressed mode and the time base message (such as
upper side of the screen would change accordingly. Press down the knob to
quickly switch to delayed sweep state.

 HORIZONTAL

POSITION: modify the trigger position. The trigger po i n t

would move left or right relative to the center of the screen when you turn the
knob. During the modification, waveforms of all the channels would move left or
right and the trigger position message (such as
upper-right cor ner of the screen w ould change accor dingly . P ress down the knob
to quickly reset the trigger position (or the delayed sweep position).

) at the

) at the

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MODE: press this key to switch the trigger mode to Auto,

TRIGGER

Normal or Single and the state backlight of the current

trigger mode would be illuminated.

TRIGGER

clockwise to increase the level and turn counterclockwise
to reduce. During the modif ic ation, the trigger level line
moves up and down and the value in the trigger level

message box (such as
corner of the screen would change accordingly. Press
down the knob to quickly reset the trigger level to zero
point.

MENU: press this key to open the trigger o peration menu.
This oscilloscope provides various trigger types.

FORCE: in Normal and Single trigger modes, press this
key to generate a trigger signal forcefully.

50%: press this key to set the trigger level to the vertical
midpoint of the trigger signal amplitude.

LEVEL: modify the trigger level. Turn

CLEAR

Press this key to clear all the waveforms on the screen. If
the oscilloscope is in “RUN” state, waveforms will still be
displayed.

) at the lower-left

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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
according to the input s ignal to realize optimum w aveform
display. Besides, the quick parameter measurement
function is also provided (for more details, refer to “

Measurement after AUTO”).

Note: Auto setting requires that the frequency of the
signal under test should be no l ower t han 50 H z, the dut y
cycle be greater than 1% and the amplitude be at le ast 20
mVpp. If the parameters exceed these limits, “Can’t
detect any signal” would be displayed after pressing this
key and the quick parameter measurement menu might
not be displayed.

Quick

RUN/STOP

SINGLE

Press this key to set the state of the oscilloscope to
“RUN” or “STOP”. In “RUN” state, the key is illuminated in
yellow and red in “STOP” state.

Press this key to set the trigger mode to “Single”. In
single trigger mode, the oscilloscope generates a trigger
when the trigger conditions are met and then stops.

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Multi-function Knob

This knob can be used to adjust the value of the parameters, adjust the waveform
brightness and select the desired menu (the backlight turns on during operation).
 During parameter input, turn the knob clockwi s e to increase the p ar ameter and

count ercloc kwise to decreas e.

 When the menu is hidden, rotate the knob to adjust the waveform brightness.

The adjustable range is from 0% to 100%. Turn the knob clockwise to increase
the waveform brightness and counterclockwise to decrease. Press down the
knob to reset the wavef orm brightness to 50%. Use rs can also p ress Display 
WaveIntensity and then rotate the knob to adjust the waveform brightness.

 During menu operation , after p ressing a menu softkey, rotate the knob to switch

to the desired sub-menu under that menu and press down the knob to select
that sub-menu. In addition, the kno b can also be used to modif y para meters and
input filenames.

Navigation K n ob

This knob provides quick Adjust/Locate function for
numerical parameters with relatively larger settable
ranges. Turn th e kn ob clockwise (counterclockwise) to
increase (reduce) the value. Note that the inner knob is
used for fine adjustment and the outer knob for coarse
adjustment. The larger the rotati o n ampli tu d e of the
outer knob is, the fatster the change speed of the figure
will be. For example, this knob can be used to quickly
locate the waveform frame (Current Frame) to be
played back in waveform p layback. Similar menus
include trigger holdoff, pulse width setting, slope time
etc.

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Default

Press this key and then press OK to restore the oscil loscope

to its default configuration.

Print

Press this key to execute print function or save the screen
in the USB storage device. If the oscilloscope is currently
connected to a printer and the printer is in idle state, press
this key to execute print function. If no printer but a USB
storage device is currently connected, press this key to
save the screen to the USB storage device in “.bmp”
format. When printer and USB storage device are
connected at the same time, the printer enjoys higher
priority.

Function Keys

 Measure: press this key to enter the measurement setting menu.
 Acquire: press this key to enter the sample setting menu. Here, y ou can set the

acquisition mode, the memory depth, and the antialiasing function of the
oscilloscope.

 Storage: press this key to enter the file store and recall interface. The file types

available include traces, waveforms, setups, pict ure and CSV. This i nstrument
supports internal/external stora ge as well as disk management.

 Cursor: press this key to enter the cursor measurement menu. The oscilloscope

provides three cursor modes (manual, track a nd auto).

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Stop Play/Pause Record

 Display: press this key to enter the display setting menu to set the display t ype,

persistence time, wave intensity, grid type, grid brightness and menu display
time o f t he waveform.

 Utility: press this key to enter the system function setting menu to set the

system-related functions or parameters, such as I/O setting, sound and
language. The oscilloscope also supports some advanced functions such as
pass/fail test and print setting.

 Record: press this key to enter the waveform record menu to set the waveform

record and open (record constant on) mode.

 Help: press this key to open the help interface. For detailed info rmation, pleas e

refer to the introduction in “To Use the Built-in Help Syste m”.

Record

Play/Pause: in stop or pause state, press this key to play the recorded or paused

waveform and press again to pause the play. The backlight is illuminated in yellow.
Stop: press this key to stop the waveform in record or play back m ode. The backlight
is illuminated in orange.
Record: press this key to start recording the waveform. The backlight is illuminated
in red. Besides, the backlight will a lso be illuminate d when the open (record constant
on) mode is enabled.

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LA

1 Quick Start RIGOL

LOGIC ANALYZER



 LA_ : this knob can be used to reposition the digital

: press this key to enter the logic analyzer setting
interface. Y ou can enable or disable groups of channels or a
single channel, change the display size and the logic
threshold of the digital channels and group the 16 digital
channels and display them as a bus. You c an also set a
label for each digital channel.

channels. Press this knob to switch the digital channels
currently enabled. The selected number of the digital
channel (from small to large) will be highlighted in red.
Rotate the knob to move the digital channel to the desired
position and press this knob again to fix this channel.

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1-24

User Interface

The MSO4000/DS4000 oscilloscope features 9 inch, WVGA (800*480) 160,000 color
TFT LCD. The display also features a 14-grid ultra-wide screen view that enables you
to observe “longer” waveforms.

1 2 3 4 5 6 7 8 9 10 11 12

13 14 15 16 17 18 19 20

Figure 1-13 User Interface

1. Measurement Menu

Provide 12 horizontal (HORIZO NTAL) and 12 vertical (VERTICAL)
measurement parameters. Press the softkey at the left of the screen to
activate the corresponding measurement item.

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2. Analog Channel Label/Waveform

Each analog channel is col or c ode d t o match the input. For example, CH1 is
yellow and CH2 is light blue.

3. Digital Ch an n el Label/Waveform

The logic high levels of th e digital wa vefo rms are di splayed in blue, the lo gic
low levels are display ed in green whic h complies wit h the color of the digital
channel label and the edges are displayed in white. Both the label and the
waveform of the digital channel currently selected are displayed in red.

4. Status

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

5. Horizontal Time Base

 Represen t the tim e 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.

6. Sample Ra te/Memory Depth

 Displays the current sampl e rate and me mory depth of the oscilloscope.
 Use HORIZONTAL

SCALE to modify this parameter.

7. Waveform Memory

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

waveform on the

screen

8. Trigger Position

Displays the trigger posi t ion of the waveform.

9. Horizontal Position

Use HORIZONTAL

POSITION to modify this parameter. Press down

the knob to automatically set the parameter to 0.

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10. Trigger Type

Displays the currently selected trigger type and trigger condition setting. A
different label is displayed when a different trigger type is selected.
For example,

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

11. Trigger Source

Displays the trigger source (CH1 to CH4, EXT, EXT/5, AC Line or D0-D15)
currently selected. A different label is displayed when a different trigger
source is selected and the color of the trigger parameter area will change
accordingly.
For example,

de notes that CH1 is selected as the trigger source.

12. Trigger Level/Threshold

 The trigger level label

will be displayed at the right of the screen
when the trigger source is set to CH1 to CH4 and the trigger level value
is displayed at the upper-right corner of the screen.
Note: In runt trig ger a nd s lope t rigger, there are two trigger level la bels
(

and ). For detailed information, refer to “Vertical Window” on

page

5-14 and 5-18.

 When using TRIGGER

trigger level value will change with the up and down of

LEVEL to modify the trigger level, the

.

 There is no trigger level label displayed when the tri gger source is set to

D0-D15 and the trigger threshol d is displayed at the upper-right corner
of the screen.

13. CH1 Vertica l Sc a le

 Displays the voltage value per grid of the CH1 waveform.
 Use VIRTICAL

SCALE to modify this parameter.

 The following labels will be provided according to the current channel

setting: Channel Coupling

(such as in AC coupling), Bandwidth

Limit (such as when bandwidth limit is enabled) and Input
Impedance (such as when the input impedance is 50 Ω).

14. CH2 Vertica l Sc a le

 Displays the voltage value per grid of the CH2 waveform.
 Use VIRTICAL

SCALE to modify this parameter.

 The following labels will be provided according to the current channel

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1-27

setting: Channel Coupling (such as in AC coupling), Bandwidth

Limit (such as when bandwidth limit is enabled) and Input
Impedance (such a s when the input impedance is 50 Ω).

15. CH3 Vertical Sca le

 Displays the voltage value per grid of the CH3 waveform.
 Use VIRTICAL

SCALE to modify this parameter.

 The following labels will be provided according to the current channel

setting:

Channel Coupling (such as in AC coupling), Bandwidth
Limit (such as when bandwidth limit is enabled) and Input
Impedance (such a s when the input impedance is 50 Ω).

16. CH4 Vertica l Sc a le

 Displays the voltage value per grid of the CH4 waveform.
 Use VIRTICAL

SCALE to modify this parameter.

 The following labels will be provided according to the current channel

setting:

Channel Coupling (such as in AC coupling), Bandwidth
Limit (such as when bandwidth limit is enabled) and iInput
Impedance (such a s when the input impedance is 50 Ω).

17. Message Box

Displays prompt messages.

18. Digital Chann el Status Area

Displays the current state of the 16 di gital channels (D0 to D15 from right to
left). The digital channels currently enabled are displayed in green and the
digital channel currently selected is highlighted in red. Any digital channel
that is turned off will be grayed out in the Digital Channel Status Area.

19. Notification Area

Displays system time, sound icon and USB storage device ico n.
 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 the time in
the following format:
yyyy-mm-dd hh:mm:ss
(year-month-date hour:minute:second)

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RIGOL 1 Quick Start

1-28

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

Sound to turn the sound on or off.

 USB Storage Device Icon: when the oscilloscope detects a USB storage

device, is displayed.

20. Operation Menu

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

Denotes that
items. The backlight of

at the front panel can be used to select parameter

turns on when the parameter selection is
valid.
Denotes that can be used to modify a parameter value. The
backlight of

turns on when the parameter input is valid.
Denotes that you can use the navigation knob to quickly
adjust/locate parameters.
Denotes that users can rotate and then press down

to select the
desired parameter.
Denotes that the current menu has several opti on s .
Denotes that the current menu has a lower level menu.
Press this key to return to the previous menu.

Note: The following direction keys mig ht a ppear in t he grid at the lowe r-left
corner of the menu bar:

Denotes that you can open the next page menu.
Denotes that you can return to the previous page menu.

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1 Quick Start RIGOL

1-29

To Use the Security Lock

If needed, you can use a security lock (available separately) to secure the
oscilloscope to a fixed location. The method is as f ollows, align the lock with the lock
hole and plug it into the lock hole vertically, turn the key clockwise to lock the
oscilloscope and then pull the key out.

Figure 1-14 To Use the Security Lock

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

Security Lock Hole

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RIGOL 1 Quick Start

1-30

To Use the Built-in Help System

The help system of this oscilloscope provides instructions for all the function keys
(including menu keys) at t he front panel. Press Help to open the help interface and
press again to close the interface. The help interface mainly consists of two parts.
The left is “Help Options” and y ou can use “Button” or “Index” mode for selection.
The right is “Help Display Area”.

Help Options Help Display Area

Figure 1-15 Help Information

Button:

Default mode. In this mode, you can press the keys (ex cept the power key
knob
the corresponding help information of that key in the “Help Display Area”.
Use
mode.

Index:

In this mode, use
item currently selected is display ed with brown sh ading. Pre s s down the knob to get
the corresponding help information in the “Help Display Area”.
Use
mode.

a n d menu page up/ d own key / ) a t th e front panel directly to get

to select “To Index” and then press down the knob to switch to Index

to se lect th e desired item (for example, “Band Width”). The

to select “To Button” and then press down the knob to s w itch to Button

MSO4000/DS4000 User’s Guide

, the

2 To Set the Vertical System RIGOL

2-1

2 To Set the Vertical System

The contents of this chapter:

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

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RIGOL 2 To Set the Vertical System

2-2

To Enable the Analog Channel

The MSO4000/DS4000 provides four analog input channels (CH1 to CH4) and
provides independent vertical control system for each channel. As the vertical system
setting methods of the four channels are c ompletely the s ame, this c hapter uses CH1
as the example.

Connect a signal to the ch annel connect or of CH 1 and the n p ress CH1 in the vertical
control area (VERTICAL) at the fr ont pane l t o enable CH1. At this point:

Panel:
The backlight of this key turns on. If the corresponding function has been enabled,
the character “AC”, “50” or “BW” will also be illu minated. Note that the on /off state of
the key light of “AC”, “50” or “BW” is not controlle d by the on/off state of the ch annel.

Screen:

The channel setting menu is display ed at the ri ght side of the screen an d 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 paramete rs such as the vertical scale, the
horizontal time base and the trig ger mo de according to the input signal to make t he
waveform display easy to observe and measure.

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2 To Set the Vertical System RIGOL

2-3

Channel Coupling

Set the coupling mode to filter out the undesired signals. For example, the signal
under test is a square waveform with DC offset.
 When the coupling mode is “DC”: the DC a nd AC co mponents of the signal under

test can both pass the channel.

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

are blo cked.

 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. When “AC” is selected, the character “AC” below CH1 at the
front panel will be illuminated. You can also press Coupling continuously to switch
the coupling mode.

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RIGOL 2 To Set the Vertical System

2-4

Bandwidth Limit

Set the bandwidth limit to reduce display noise. For example, the signal under test is
a pulse with high frequency oscillations.
 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, 100 MHz or 200 M Hz,

the high frequency components that exceed 20 MHz, 100 MHz or 200 MH z are
attenuated.

Press CH1  BW Limit and use to enable or disable the bandwidth limit (the
default is OFF). When the bandwidth limit (20 MHz, 100 MHz or 200 MHz) is enabled,
the char acter “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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2 To Set the Vertical System RIGOL

2-5

0.01X

1000 X

1:100

1000:1

Probe

This oscilloscope supports normal passive probes and active differential probes. It
can automatically identify the type of the probe currently connected and the probe
ratio. Press CH1  Probe to open the probe operation menu.

1. ProbeType

Read the type of the probe currently connected as “Nor-Probe” or “DiffProbe”.
Note that when a 50 Ω “DiffProbe” is used, the
channel is set to “50 Ω” automatically.

 Normal Pr obe: such as RIGOL RP3500A.
 Differential Probe: such as RIGOL RP7150.

2. Ratio

For so me “Nor-Probe”s, the oscilloscope can identify the probe rat io
automatically. If not, press this softkey to select the corresponding probe ratio.
The values available are listed in the table below.

Table 2-1 Probe Attenuation Coefficient

Menu Attenuation coefficient

Input Impedance of the

0.02X

0.05X

0.1X

0.2X

0.5X
1X
2X
5X
10X

When “DiffProbe” is connected, the oscilloscope recognizes it automatically and the
following menus are added.

MSO4000/DS4000 User’s Guide

20 X

50 X
100 X
200 X
500 X

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

RIGOL 2 To Set the Vertical System

2-6

3. Front-End

RP7150 active probe provides “Single-end” and “Difference” probe heads. Press
this softkey to select the desired probe head.

4. Probe-Cal

Connect the differential p robe to the channel in put terminal (such as CH 1) of the
oscilloscope correctly, then connect the fast edge signal output from the [Trig
Out/Calibration] connector at the rear panel of the instrument to the probe
and CH2 respectivel y. At this point, press this softkey and the oscilloscope starts
to calibrate the probe.

Note: If the probe is connected to CH1, CH3 or CH4, the fast edge signal should
be connected to CH2; if the probe is connected to CH2, the fast edge signal
should be connected to CH1.

5. Probe Info

Press this softkey to view information ab out the probe, su ch as the manufa cturer,
model, serial number and the date of last calibration.

6. Bias Voltage

The oscilloscope provides a bias voltage for diffe rential probes. This bias voltag e
is used to adjust the input dynamic range of the probe amplifier to an
appropriate range to ensure accurate measurement of the signal under test.
Press this softkey and use the knob to adjust the bias voltage. The range i s from

-12V to +12V.

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2 To Set the Vertical System RIGOL

2-7

Input Impedance

To reduce the ci rcuit load caused by the interaction between the oscilloscope and the
circuit under test, the oscilloscope provides two input impedance modes: 1 MΩ
(default) and 50 Ω.
 1 MΩ: at this point, the input im pedance of the oscilloscope is v ery high an d the

current flows into the oscilloscope from the circuit under test can be ignored.

 50 Ω: match the oscilloscope with devices with 50 Ω output impedance.

Press CH1  Input to set the input imped ance of the oscilloscope. When “50 Ω” is
selected, the character “Ω” is displayed in the channel label at the bottom of the
screen.

Note that after the probe is aut omatically ide ntified, the input impedance will also be
automatically identified and you do not need to set it manually.

Waveform Invert

When waveform invert is enabled, the waveform display rotates 180 degree relative
to the ground potential. When waveform invert is disabled, the waveform display is
normal. Press CH1  Invert to enable or disable wave form in vert.

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RIGOL 2 To Set the Vertical System

2-8

Vertical Scale

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

Press CH1  Volts/Div to select 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
of the screen will chan ge accordingly during the adjustment. The adjustable range of

the vertical scale is relat ed to the current probe ratio. By default, the probe ratio is 1X
and the vertical scale range is from 1 mV/d i v t o 5 V/div.

 Coarse adjustment (take counter clockwise a s an example): s et the v ertical s cale

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

 Fine adjustment: enables fine adjustment to the vertical scale. If the amplitude

of the input waveform is a little bit greater than the full scale and the amplitude
would be a little bit lower if the next scale is used, fine adjustment can be used

to improve the ampl i t ude of waveform display to v i ew signal details.
Note: You can also press VERTICAL
and “Fine” adjustments.

SCALE to quickly switch between “Coarse”

) in the channel label a t the bottom

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2 To Set the Vertical System RIGOL

2-9

Vertical Expansion

When using VERTICAL
channel, you can choose to expand or compress the signal vertically arou nd 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.

SCALE to change the vertical scale of the analog

Amplitude Unit

Select the amplitude displ ay unit f or the cur rent channel. The available units are W, A,
V and U. When the unit is changed, the unit displayed in the channel label will
change accordingly.

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

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RIGOL 2 To Set the Vertical System

2-10

Channel Label

You can m odif y the labels used t o mark the analog c hannels (CH1 to CH 4) at t he 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 ch ar acters.

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

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

T o modif y or delete the input char acter, press Name to select the “Name Input Area”
and use

to se lect 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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2 To Set the Vertical System RIGOL

2-11

Delay Calibration

When using an oscilloscope for actual measurements, the transmission delay of the
probe cable may bring greater error (zero offset). The MSO4000/DS4000 allows
users to set a de lay time to c alibrate the zero offset of the co r respondi ng channel.
Zero offset is defined as the off set of the crossing point of the waveform and trigger
level line relative to the trigger position, as shown below.

Trigger Position

Trigger Level

Press CH1 Delay-Cal and use to select the desired delay time. The range
available is from -100 ns to 100 ns.
Note: This parameter is related to the current horizontal time base. For example,
when the horizontal time base is 5 us, the step of the delay time setting is 100 ns.
when the horizontal time base is 1 us, the step of the delay time setting is 20 ns.
when the horizontal time base is 500 ns, the step of the delay time setting is 10 ns.

MSO4000/DS4000 User’s Guide

Zero Offset

3 To Set the Horizontal System RIGOL

3-1

3 To Set the Horizontal System

The contents of this chapter:

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

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RIGOL 3 To Set the Horizontal System

3-2

Delayed Sweep

Delayed sweep can be use d to enla rge a len gth of waveform horizontally to view the
waveform details.

Press MENU in the horizontal control area (HORIZONTAL) and press Delayed to
enable or disable delayed sweep. Note that to enable delay ed sweep, the curre nt
time base mode must be “Y-T” and th e “Pass/Fail test” must be disabled.

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3 To Set the Horizontal System RIGOL

3-3

Tip

In delayed sweep mode, the screen is divided into t wo dis play a reas as show n in the
figure below.

The waveform before

enlargement

Main time base

Delayed Sweep
Time Base

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
HORIZONTAL

POSITION to move the area left and right or turn
SCALE to enlarge or reduce this area.

The waveform after enlargement:

The waveform in the l ower part of the screen is the h orizontally expande d wa veform.
Note that compared to the main tim e base, the delayed time base has increased
waveform resolution (as shown in the figure above).

Note: The delayed time base should be less than or equal to the main time base.

When the current channel is CH1 to CH4, you can also press down HORIZONTAL

SCALE (delayed sweep shortcut key) to directly switch to delayed sweep mode.

MSO4000/DS4000 User’s Guide

RIGOL 3 To Set the Horizontal System

3-4

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 CH1 to CH4.
In this mode, the Y a xis rep resents volta ge and the X axis represents ti me. Note that
only when this mode is enabled can

Delayed Sweep be tur ned on.

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3 To Set the Horizontal System RIGOL

3-5

X-Y Mode

In this mode, the oscilloscope automatically turns on all f our chan ne ls (CH1 to CH4)
and the screen is divided into two coordinate areas. X1 and Y1 track the vo ltages of
CH2 and CH1 and X2 and Y2 track the vo l t ages of CH4 and CH3.
The phase deviation between two signals with the same frequency can be easily
measured via the Lissajous method. The figure below shows the measurement
schematic diagram of the phase deviation.

The signal must be
centered horizontally

D

C

III IV

II I

II I

A

III IV

B

According to sin

θ=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 quadrant I and IV, namely within (0 to 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 within quadrant II and III, namely within (π/2 to
π) or (π to 3π/2).

MSO4000/DS4000 User’s Guide

RIGOL 3 To Set the Horizontal System

3-6

The X-Y function can be used to measure the phase deviation when the signal under
test passes through a circuit 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. Then, press XY1 to select “On”.

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

SCALE to make the signals easy

to observe. At this point, the circle as shown in the figure below should be
displayed.

4. As shown in the figure above, the distances from the crossing points of axis and
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 sample rate (within the guaranteed

range) to ca pture the waveform. The maximum sample rate of X-Y mode is 2. 0
GSa/s. Generally, reducing the sample rate can impr o v e the display ed Lissajous
figure.

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3 To Set the Horizontal System RIGOL

3-7

 When X-Y mode is enabled, 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 control, memory

depth, acquisition mode, Pass/Fail test and waveform record.

Method 2: Use the shortcut measurement function

Please refer to “Phase A→B ” and “Phase A→B ” measurement fun ctions of “Delay
and Phase” on page

6-16.

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RIGOL 3 To Set the Horizontal System

3-8

hen the horizontal time base is set to 200

Roll Mode

In this mode, the waveform scrolls f r om the right to the left, much like a strip chart.
This is useful fo r viewing slower signals a s the si gnal i s “drawn out” on the display as
time elapses. The waveform horizontal position and tri gger controls are not available.
The range of horizontal scale adjustment is from 200.0 ms to 50.00 s.

Note: When the Roll mode is enabled, “
“

Pass/Fail Test”, “Measurement Range”, “Waveform Record”, “To Set the

Persistence Time”, “To Trigger the Oscilloscope” and “Logic Analyzer” are

not available.

Slow Sweep

Another mode similar t o the Roll mode. W
ms/div or slower , the instrument enters “slow sweep” mode in which the instrument
fi r s t acq u ires the data to the left of the trigger point and then waits for trigger
event. After the trigger occurs, the instrument continues to finish the waveform at
the right of the trigger point. When the slow sweep mode is used to observe low
frequency signal, it is recommended that the

Delayed Sweep”, “Protocol Decoding”,

Channel Coupling is set to “DC”.

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3 To Set the Horizontal System RIGOL

3-9

Horizontal Scale

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 adjust the
horizontal scale. Turn clockwise to reduce the horizontal scale and turn
countercloc kwi se to increase.

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

The scale information (such as
will change accordingly during the adjustment . The range of horizontal scale

adjustment is from 1.00 0 ns to 1000 s.

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

step namely 1 ns, 2 ns, 5 ns…1000 ns.

 Fine: higher resolution steps allow fine adjustment of horizontal scale.

) at the upper left corner of the screen

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RIGOL 3 To Set the Horizontal System

3-10

Horizontal Reference

The horizontal reference is the reference position according to which the screen
waveform expands and compresses horizontally when adjusting HORIZONTAL

SCALE. In Y-T mode (this function is not available in X-Y mode and Roll mode), press
MENU  HorRef in the horizontal control area (HO RIZONTAL) to select the des ired

reference mode and the default is “Center”.

1． The Center of the Screen

When changing the horizontal time base, the waveform expands or compress es
horizontally around th e center of the screen.

2． Trigger Position

When changing the horizontal time base, the waveform expands or compresses
horizontally around the trigger point.

3． User-defined

When changing the horizontal time base, the waveform expands 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.

MSO4000/DS4000 User’s Guide

4 To Set the Sample System RIGOL

4-1

4 To Set the Sample System

The contents of this chapter:

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

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RIGOL 4 To Set the Sample System

4-2

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 mode. You can also press Acquisition continuously to switch t he
acquisition mode.

Normal

In this mode, the oscilloscope sam ples the signal at equal time int erval to re build th e
waveform. For most of the waveforms, the best display effect can be obtained using
this mode.

Average

In this mode, the oscilloscope averages the wavef orms from multiple samples to
reduce the random noise of the i nput signal and im prove the v ertical resolution. More
averages can lower the noise and may increase the vertical resolution but it will slow
the overall response of the displayed waveform to input changes.

The available ran ge of the number of ave rages is 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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4 To Set the Sample System RIGOL

4-3

The Waveform before Average:

The Waveform after 256 Averages:

MSO4000/DS4000 User’s Guide

RIGOL 4 To Set the Sample System

4-4

Peak Detect

In this mode, the oscilloscope acquires the maximum and minimum values of the
signal w ithin the sample in terval to get the env elope or the narrow pulse of the signal
that might be lost. In this mode, signal confusion can be prevented but the noise
displayed would be larger.

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

High Resolution

This mode uses an over-sample technique to average the neighboring points of the
sample waveform. This reduces the random noise on the input signal and generates
a much smoother waveform on the screen. This is generally used when the sample
rate of the digital converter is hi gher than the st orage r ate of the a cquisition memory.

Note: “Average” and “High Res” modes use dif fe rent a ver agi ng me tho ds. The former
uses “Waveform Average” and the latter uses “Single-sample Average”.

MSO4000/DS4000 User’s Guide

4 To Set the Sample System RIGOL

4-5

Tip

to stop the sample, the oscill osc o pe will hold the last display. At

zoom the waveform.

Sample Mode

This oscilloscope only supports real-ti me sampling. In this mode, the oscilloscope
samples and displays waveforms within a trigger event. The maximum real-time
sample rate of MSO4000/DS4000 is 4 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

MSO4000/DS4000 User’s Guide

RIGOL 4 To Set the Sample System

4-6

t

/Δ

1

Rate Sample =

Sample Rate

Sample refers to the process that the oscilloscope converts analog signals to digital
signals at a certain time interval and stores the data in order. Sampl e ra t e i s t he
reciprocal of the time interval.

The analog channels sample rate of this oscilloscope is up to 4 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 ch anged by adjusting the horizontal time base (s/div)
through HORIZONTAL

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.

SCALE or modifying the “Memory Depth”.

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4-7

2. Waveform Confusion: when the sample rate is lower than twice the actual
signal frequency (Nyquist Frequency), the frequency of the wave form rebuilt
from the sample data is lower than the actual signal frequency. The most
common aliasing is the jitter on a fast edge.

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

MSO4000/DS4000 User’s Guide

RIGOL 4 To Set the Sample System

4-8

LA Sample Rate

LA sampling ref ers t o the process t hat the oscillosco pe sa mples the compare d digital
signal at a certain time interval. LA sample rate is the reciprocal of the interval. For
example, the oscilloscope with 1 GHz LA sample rate samples digital signals every 1
ns. T he digital signal ment ioned here refers to the signal generated by comparing the
input signal with the threshold spe cified by users. The input signal is ju dged a s logi c
high level when its amplitude g reater than the th reshold a nd lo gic low le vel w hen its
amplitude is lower than the threshold.

The digital channels sample rate of this oscilloscope is up to 1 GSa/s (per channel).
Note that the LA sample rate is displayed in the La SaRate menu and can be
changed by a djusting the horizontal time base (s/div) through HORIZONTAL
SCALE or modifying the “Memory Depth”.

MSO4000/DS4000 User’s Guide

4 To Set the Sample System RIGOL

4-9

T

Trigger Point

Pre-

sample

Delayed Sample

Memory Depth

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. MSO4000/DS4000 provides up to 140 M points memory depth.

The relation of memory depth, sample rate and wa ve form len gth ful fills the equation
below:

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

Thus, higher memory depth can en s ure higher sample rate.

Press Acquire  Mem Depth, 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 140MPoints. In “Auto” mode, the
oscilloscope selects the memory depth automati cally accordin g to the current sa mple
rate.

When dual channels are enabled (CH1 and CH2 or CH3 and CH4), the memory
depths available include Auto, 7kPoints, 70kPoints, 700kPoints, 7MPoints and
70MPoints. In “ Auto” mode, the oscillosco pe selects the memory de pth automatically
according to the current sample rate.

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Antialiasing

At slower sweep speeds, 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, antialiasing is disa bled. The dis played wa veforms w ill be mo re susceptible to
aliasing when this function is disabled.

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5-1

5 To Trigger the Oscilloscope

The trigger system of an oscilloscope allows users to tailor data collection an d isolate
particular events by providing a flexible control system to “select” certain events
(rising edge, falling edge, etc.).You can set a trigger condition according to the
requirement and when a wavef orm in the wa veform st ream meets this con dition, the
oscilloscope captures this waveform as well as the neighbouring part and then
displays the captured waveforms on the screen. The oscilloscope samples waveform
data continuously, but only a stable trigger can guarantee stable waveform displays.
The trigger circuit guarantees that each sweep or sample starts from the trigger
condition defined by the user. Each sweep and sample are synchronous and the
waveforms acquired overlap to display the stable waveform.

The trigger setting should be based on the features of the input signal, thus you nee d
to have some knowledge of the signal under test to quickly capture the desired
waveform. This os cilloscope provides abundant adv anced trigger f unctions which can
help you to focus on the waveform details of interest.

The contents of this chapter:

 Trigger Source
 Trigger Mode
 Trigger Coupling
 Trigger Holdoff
 Noise Rejection
 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 to CH4, the [EXT TRIG]
and [LOGIC D0-D15] connectors as well as the AC Line can all be used as trigger
source.

Analog channel input:

Signals input fr om analog channels CH 1 to CH4 can all be used as the trigger sou rce .
No matter whether the input of the channel selecte d is enabled, the channel can
work normally.

External trigger input:

External trigger source can be used to trigger on the fifth channel when all the four
channels are sampling data. The trigger signal (such as external clock and signal of
the circuit to be tested) should be connected to EXT or EXT/5 trigger source via the
[EXT TRIG] connector. You can set the trigger condition wit hin the r ange of trigger
level (-0.8 V to +0.8 V).

Digital ch an n e l in p ut:

Signals input from digital channels D0 to D15 can all be used as the trigger source.
No matter whether the input of the channel selected is enabled, the channel can
work normally.

AC line:

The trigger signal is obtai n e d from the AC power i nput of the oscilloscope. This kind
of signals can be used to display the relationship between the signal (suc h as
illuminating device) and power (power supply devic 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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5 To Trigger the Oscilloscope RIGOL

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Trigger Mode

The trigger mode affects the way in which the oscilloscope searches for the trigger.
The following is the schematic diagram of the acquisition memory. As shown in the
figure below, the position of the trigger event in the acquisition memory is
determined by the reference time point and the delay setting.

Pre-trigger Buffer Post-trigger Buffer

Acquisition memory

Pre-trigger/Delayed trigger:

This area is where you can view data acquired before/after the trigger event. The
trigger position is usually at the hori zontal center of the screen. In full-screen display,
seven-grid pre-trigger and delayed trigger information are displayed respectively.
You can adjust the horizontal position through HORIZONTAL
view more pre-trigger information, th rough 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 select the desired trigger mode. The corresponding stat us light
of the mode currently selected turns on.

Auto:

This trigger mode automatically triggers regardless of whether the trigger condition
is met. A horizontal line is displayed when there is no input signal.
In this mode, the oscilloscope operates by first filling the pre-trigger buffer. It starts
searching for a trigger after the pre-trigger buffer is filled and continues to flow data
through this buffer while it searches for the trigger. While searching for the trigger,
the oscilloscope overflows the pre-trigger buff er and the first data put into the buffer
is first pushed out (FIFO). When a trigger is found, the pre-trigger buffer contains

Trigger Event

POSITION to

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5-4

the data acquired just before the trigger. If no trigger is found, the oscilloscope will
force a trigger. If the forced trigger is in v alid , the osc illoscope s till dis plays w av efo rm
but th e wav eform will not be stable. If the forced trigger is valid, the oscilloscope
displays a stable wav eform.
This trigger mode is applicable to low-repetitive-rate signals and unknown signal
levels. To display DC signals, you must use auto trigger mode.
Note: When the horiz ontal time base is set to 50 ms/div or greater , thi s t rigge r m ode
allows the absence of trigger signal.

Normal:

Displays a waveform when the trigger condition is met. Otherwise, the oscillosc ope
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 oscilloscope overflows the pre-trigger buff er and the first data put into the buffer
is fir st pushed out (FIFO). When a trigger is found, the oscilloscope will fill the
post-trigger buffer and display the a cquisitio n mem o ry.
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 forced trigger s ignal.

Single:

When this mode is selected, the backlight of the SINGLE key turns on. The
oscilloscope waits for a trigger an d displa ys the wa ve form whe n the trigger c ondition
is met and then stops.
Note: In this mode, pressing FORCE can generate a forced trigger signal.

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Trigger Coupling

The trigger coupling setting determines the type of signal components that will be
transmitted to the trigger circuit. This is similar to the settings of “Channel

Coupling” but is specific to the triggered signal only.

 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 components and reject the low frequency components

(lower than 5 kHz).

 HF reject: reject the high frequency components (higher than 50 kHz).

Press MENU  Setting  Coupling in the trigger control area (TRIGGER) at the
front panel to select the desired coupling type (the defa u l t is DC).

Note: Trigger coupling is invalid in the video trigger mode.

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Trigger Position

Trigger Holdoff

Trigger holdoff can be used to stabilize the display of complex waveforms (such as
pulse series). The holdoff ti me is the delay bef ore 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 holdoff time has a range from 100 ns to 10 s.

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Noise Rejection

Noise rejecti on minimizes the possibility of triggering on a noise signal reducing the
trigger sensitivity. This decrease in sensitivity does require a greater amplitude
waveform to trigger the oscilloscope.

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

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Trigger Type

The MSO4000/DS4000 pro vides various tri gger functions, in cluding various serial bus
triggers.

 Edge Trigger
 Pulse Trigger
 Runt Trigger
 Nth Edge Trigger
 Slope Trigger
 Video Trigger
 Pattern Trigger
 RS232 Trigger
 I2C Trigger
 SPI Trigger
 CAN Trigger
 FlexRay Trigger
 USB Trigger

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Edge Trigger

The edge trigger configures the instrument to capture data when the rising or falli ng
edge of the input signal passes the threshold (trigger) voltage setting.

Trigger Type:

Press Type to select “Edge”. At this point, the trigge r setting inf ormation as shown i n
the fi g ure below is displayed at the upper right corner of the screen.

Source Selection:

Press Source to select CH1 to CH4, EXT, EXT/5 or AC Line as the Trigger Source.
The current trigger source is displayed at the upper right corner of the screen.
Note: Select the channel with the signal input as the trigger source to obtain stable
trigger.

Edge Type:

Press Slope to select the kind of edge of the input signal on which the oscilloscope
triggers. The current edge type is displayed at the upper right corner of the screen.

 : trigger on t he rising edge of the input signal when the voltage level meets

the preset Trigger Level.



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

Trigger Mode:

Press Sweep to select the Trigger Mode (page 5-3) under this trigger type as auto,
normal or single. The correspondin g status light o f the current tri gger mode turns on.

Trigger Setting:

Press Setting to set the trigger p aramete r s ( trigger coupling, trigg e r hol do ff and
noise rejection) under this trigger type.

Trigger Level:

Use TRIGGER
trigger mark “
the knob, while at the same time, the trigger level value (such as

: trigger on the f alling e dge of the inp ut signal when the v oltage level meets

the preset Trigger Level.

voltage level meets the preset Trigger Level.

LEVEL to modify the level. An orange trigger level line and the

” appear on the screen and move up and down with the rotation of

) at

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5-10

the lower left corner of the screen also changes accordingly. The trigger level line
and the trigger mark will disappear in about 2 seconds if no input (rotation) is
detected.

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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 sett ing information as s hown in
the fi g ure below is displayed at the upper right corner of the screen.

Source Selection:

Press Source to select CH1 to CH4, EXT or D0-D15 as the Trigger Source. The
current trigger source is displayed at the upper right corner of the screen.
Note: Select the channel with the signal input as the trigger source to obtain stable
trigger.

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

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

the specified Pulse Width Setting.











: trigger when the positive pulse wi dth of the input si gnal is lower than the

specified Pulse Width Setting.

: trigger when the positive pulse width of the input signal is greater than
the specified Lower Limit of Pulse Width and lowe r than the Upper Limit of Pul se
Width.

: trigger when the negativ e pulse wi dth of the in put s ignal is great er tha n
the sp ecified Pulse Width Setting.

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

the specified Pulse Width Setting.

: trigger when the negativ e pulse wi dth of the in put s ignal is great er tha n
the specified Lower Limit of Pulse Width and lower t han the Upper Limit of Pul se
Width.

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Positive

A

B

Pulse Width Setting:

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

pulse width

 When the Pulse Condition is set to

, , or , press
Setting and use to input the desired value. The range av ailable is fr om 4 ns
to 4 s.

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

Lower Limit and use to input the desired values respectively. The range of

the upper limit is from 12 ns to 4 s. The range of the lower limit is from 4 ns to

3.99 s. Note that the lowe r limit of the pulse width m ust be lowe r than the upper
limit.

Trigger Mode:

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

Trigger Setting:

Press Setting to set the trigger parameters (trigger coupli n g, tr i gger holdoff and
noise rejection) under this trigger type.

Trigger Level:

Use TRIGGER LEVEL to modify the l e ve l. For details, please refer to the
description of “

Trigger Level” on page 5-9.

MSO4000/DS4000 User’s Guide