User's Guide | Rigol DS2000 Series User`s guide

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User's Guide | Rigol DS2000 Series User`s guide | Manualzz
RIGOL
User’s Guide
DS2000 Series Digital Oscilloscope
Sept. 2012
RIGOL Technologies, Inc.
RIGOL
Guaranty and Declaration
Copyright
© 2012 RIGOL Technologies, Inc. All Rights Reserved.
Trademark Information
RIGOL is a registered trademark of RIGOL Technologies, Inc.
Publication Number
UGA13106-1110
Notices
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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 or consequential
in connection with the furnishing, use or performance of this manual as well as
any information contained.
Any part of this document is forbidden to be copied or photocopied or
rearranged without prior written approval of RIGOL.
Product Certification
RIGOL guarantees this product conforms to the national and industrial standards in
China as well as the ISO9001:2008 standard and the ISO14001:2004 standard.
Other international standard conformance certification is in progress.
Contact Us
If you have any problem or requirement when using our products, please contact
RIGOL Technologies, Inc. or your local distributors, or visit: www.rigol.com.
DS2000 User’s Guide
I
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Safety Requirement
General Safety Summary
Please review the following safety precautions carefully before putting the
instrument into operation so as to avoid any personal injuries or damages to the
instrument and any product connected to it. To prevent potential hazards, please use
the instrument only specified by this manual.
Use Proper Power Cord.
Only the power cord designed for the instrument and authorized by local country
could be used.
Ground The Instrument.
The instrument is grounded through the Protective Earth lead of the power cord. To
avoid electric shock, it is essential to connect the earth terminal of power cord to the
Protective Earth terminal before any inputs or outputs.
Connect the Probe Correctly.
Do not connect the ground lead to high voltage since it has the isobaric electric
potential as ground.
Observe All Terminal Ratings.
To avoid fire or shock hazard, observe all ratings and markers on the instrument and
check your manual for more information about ratings before connecting.
Use Proper Overvoltage Protection.
Make sure that no overvoltage (such as that caused by a thunderstorm) can reach
the product, or else the operator might expose to danger of electrical shock.
Do Not Operate Without Covers.
Do not operate the instrument with covers or panels removed.
Use Proper Fuse.
Please use the specified fuses.
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DS2000 User’s Guide
RIGOL
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 increasing of temperature or damages to the
device. So please keep well ventilated and inspect the intake and fan regularly.
Do Not Operate in Wet Conditions.
In order to avoid short circuiting to the interior of the device or electric shock, please
do not operate in a humid environment.
Do Not Operate in an Explosive Atmosphere.
In order to avoid damages to the device or personal injuries, it is important to
operate the device away from an explosive atmosphere.
Keep Product Surfaces Clean and Dry.
To avoid the influence of dust and/or moisture in air, please keep the surface of
device clean and dry.
Electrostatic Prevention.
Operate in an electrostatic discharge protective area environment to avoid damages
induced by static discharges. Always ground both the internal and external
conductors of the cable to release static before connecting.
Handling Safety
Please handle with care during transportation to avoid damages to buttons, knob
interfaces and other parts on the panels.
DS2000 User’s Guide
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Safety Terms and Symbols
Terms in this Manual. These terms may appear in this manual:
WARNING
Warning statements indicate the conditions or practices that could result in
injury or loss of life.
CAUTION
Caution statements indicate the conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the Product:
DANGER
WARNING
CAUTION
indicates an injury or hazard may immediately happen.
indicates an injury or hazard may be accessible potentially.
indicates a potential damage to the instrument or other property might
occur.
Symbols on the Product. These symbols may appear on the product:
Hazardous
Voltage
IV
Please Refer to
Manuals
Protective
Earth
Terminal
Chassis
Ground
Test
Ground
DS2000 User’s Guide
RIGOL
Measurement Category
Measurement Category
DS2000 series digital oscilloscopes can make measurements in Measurement
Category I.
WARNING
This oscilloscope can only be used for measurements within its specified
measurement categories.
Measurement Category Definitions
Measurement category I is for measurements performed on circuits not directly
connected to MAINS. Examples are measurements on circuits not derived from
MAINS, and specially protected (internal) MAINS derived circuits. In the latter case,
transient stresses are variable; for that reason, the transient withstand capability of
the equipment is made known to the user.
Measurement category II is for measurements performed on circuits directly
connected to the low voltage installation. Examples are measurements on household
appliances, portable tools and similar equipment.
Measurement category III is for measurements performed in the building installation.
Examples are measurements on distribution boards, circuit-breakers, wiring,
including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed
installation, and equipment for industrial use and some other equipment, for
example. Stationary motors with permanent connection to the fixed installation.
Measurement category IV is for measurements performed at the source of the
low-voltage installation. Examples are electricity meters and measurements on
primary overcurrent protection devices and ripple control units.
DS2000 User’s Guide
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RIGOL
Ventilation Requirement
This oscilloscope uses fan to force cooling. Please make sure that the air intake and
exhaust areas are free from obstructions and have free air. When using the
oscilloscope in a bench-top or rack setting, provide at least 10 cm clearance beside,
above and behind the instrument for adequate ventilation.
WARNING
Inadequate ventilation may cause temperature increase which would
damage the instrument. So please keep the instrument well ventilated
during operation and inspect the intake and fan regularly.
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DS2000 User’s Guide
RIGOL
Working Environment
Temperature
Operating: 0℃ to +50℃
Non-operating: -20℃ to +70℃
Humidity
Under +35℃: ≤90% relative humidity
+35℃ to +40℃: ≤60% relative humidity
WARNING
To avoid short circuit inside the instrument 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.
WARNING
Make sure that no overvoltage (such as that caused by thunderbolt) can
reach the product, or else the operator might expose to danger of electric
shock.
Installation (overvoltage) Category Definitions
Installation (overvoltage) category I refers to signal level which is applicable to
equipment measurement terminals connected to the source circuit. In these
terminals, precautions are done to limit the transient voltage to the corresponding
low level.
Installation (overvoltage) category II refers to the local power distribution level
which is applicable to equipment connected to the AC line (AC power).
DS2000 User’s Guide
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Pollution Degree
Degree 2
Pollution Degree Definitions
Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The
pollution has no influence. For example: a clean room or air-conditioned office
environment.
Pollution degree 2: Normally only dry, non-conductive pollution occurs. Occasionally
a temporary conductivity caused by condensation may occur. For example: general
indoor environment.
Pollution degree 3: Conductive pollution occurs, or dry, non-conductive pollution
occurs which becomes conductive due to condensation which is expected. For
example: Sheltered outdoor environment.
Pollution degree 4: Pollution that generates persistent conductivity through
conductive dust, rain, or snow. For example: outdoor locations.
Safety Class
Class 1 – Grounded Product
VIII
DS2000 User’s Guide
RIGOL
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 the instrument with a lint- free cloth (with
mild detergent or water). When cleaning the LCD, take care to avoid scarifying
it.
CAUTION
To avoid damages to the instrument, do not expose them to corrosive
liquids.
WARNING
To avoid injury resulting from short circuit, make sure the instrument is
completely dry before reconnecting it to a power source.
DS2000 User’s Guide
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Environmental Considerations
The following symbol indicates that this product complies with the applicable
European Union requirements according to Directives 2002/96/EC on waste electrical
and electronic equipment (WEEE).
Product End-of-Life Handling
The equipment may contain substances that could be harmful to the environment 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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DS2000 User’s Guide
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DS2000 Series Overview
DS2000 is a high-performance and low bandwidth digital oscilloscope developed on
the basis of the Ultra Vision technique. DS2000, featuring rather deep memory depth,
ultra-wide dynamic range, superb waveform capture rate and all-round trigger
functions as well as hardware waveform record function and good display effect, is
an invaluable debug instrument in various fields (such as communication,
cosmonautics, national defense, embedded system, computer, research and
education) and is the one with the most complete functions and most outstanding
specification among the digital oscilloscopes with lower than 200 MHz bandwidth.
Main features:
 200 MHz, 100 MHz and 70 MHz bandwidth.
 Ultra Vision technique.
 2 GSa/s maximum real-time sample rate.
 50,000 wfms/s (dots display) waveform capture rate.
 Real-time hardware waveform recording, waveform playback, record open
(constant on) and waveform analysis functions. Up to 65,000 frames of
waveform can be recorded.
 56 Mpts maximum memory depth (option) and 14 Mpts standard memory
depth.
 256 degree gray scale display.
 Low noise, 500 μV/div to 10 V/div ultra-wide vertical dynamic range.
 8.0 inches, WVGA (800*480) 160,000 color TFT LCD, with ultra-wide screen,
vivid picture, low power consumption and long service life.
 Adjustable brightness of analog channel waveform.
 Auto setting of waveform display (AUTO).
 16 kinds of trigger functions including multiple protocol triggers.
 Standard parallel decoding and multiple serial decoding options.
 Auto measurements of 24 waveform parameters and measurement functions
with statistic.
 Precise delayed sweep function.
 Built-in FFT function.
 Pass/Fail test function.
 Multiple waveform math operation functions.
 Standard configuration interfaces: USB Device, USB Host, LAN and GPIB
(optional).
 Support USB storage device and PictBrige printer.
DS2000 User’s Guide
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Conform to LXI-C instrument standards. Enable quick, economic and efficient
creation and reconfiguration of test system.
Support remote command control.
Embedded help enables easier information access.
Support multiple languages and Chinese/English input.
Novel and delicate industrial design and easier operation.
DS2000 User’s Guide
RIGOL
Document Overview
1 Quick Start
2 To Set the Vertical System
3 To Set the Horizontal System
4 To Set the Sample System
5 To Trigger the Oscilloscope
6 To Make Measurements
7 Protocol Decoding
8 Reference Waveform
9 Pass/Fail Test
10 Waveform Record
11 Display Control
12 Store and Recall
13 System Function Setting
14 Remote Control
15 Troubleshooting
16 Specifications
17 Appendix
DS2000 User’s Guide
Provide information about preparations
before using the instrument and a brief
introduction of the instrument.
Introduce the functions of the vertical
system of the oscilloscope.
Introduce the functions of the horizontal
system of the oscilloscope.
Introduce the functions of the sample
system of the oscilloscope.
Introduce the trigger mode, trigger coupling,
trigger holdoff, external trigger and various
trigger types of the oscilloscope.
Introduce how to make math operation,
cursor measurement and auto
measurement.
Introduce how to decode the input signal
using those common protocols.
Introduce how to compare the input
waveform with the reference waveform.
Introduce how to monitor the input signal
using the Pass/Fail test.
Introduce how to analyze the input signal
using waveform record.
Introduce how to control the display of the
oscilloscope.
Introduce how to store and recall the
measurement result and the setting of the
oscilloscope.
Introduce how to set the remote interface
and system-related functions.
Introduce how to control the oscilloscope
remotely.
Introduce how to deal with common failures
of the oscilloscope.
Provide the specifications and general
specifications of the oscilloscope.
Provide common information such as options
and accessories.
XIII
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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.
Knob:
Logo
HORIZONTAL
SCALE
HORIZONTAL
POSITION
Knob
Multi-function
Knob
Navigation
Knob
Horizontal
Scale Knob
Horizontal
Position Knob
Logo
VERTICAL
VERTICAL
POSITION
TRIGGER
SCALE
LEVEL
Knob
Vertical Scale
Knob
Vertical Position
Knob
Trigger Level
Knob
Content Conventions in this Manual:
This manual takes DS2202 for example and the descriptions here have contained all
the functions and performances of other models. DS2000 series includes the
following models:
Model
Analog Bandwidth
Channels
DS2072
70 MHz
2
DS2102
100 MHz
2
DS2202
200 MHz
2
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Contents
Guaranty and Declaration .......................................................................... I
Safety Requirement ................................................................................. II
General Safety Summary............................................................................ II
Safety Terms and Symbols .........................................................................IV
Measurement Category ............................................................................... V
Ventilation Requirement .............................................................................VI
Working Environment .............................................................................. VII
General Care and Cleaning .........................................................................IX
Environmental Considerations...................................................................... X
DS2000 Series Overview .......................................................................... XI
Document Overview .............................................................................. XIII
1 Quick Start .......................................................................................... 1-1
General Inspection .................................................................................. 1-2
Appearance and Dimensions .................................................................... 1-3
To Prepare the Oscilloscope for Use .......................................................... 1-4
To Adjust the Supporting Legs ........................................................... 1-4
To Connect to Power Supply .............................................................. 1-5
Power-on Inspection ......................................................................... 1-6
To Connect the Probe ........................................................................ 1-7
Function Inspection .......................................................................... 1-8
Probe Compensation ....................................................................... 1-10
Front Panel Overview ............................................................................. 1-11
Rear Panel Overview.............................................................................. 1-12
Front Panel Function Overview ............................................................... 1-14
VERTICAL ...................................................................................... 1-14
HORIZONTAL ................................................................................. 1-15
TRIGGER ....................................................................................... 1-16
CLEAR ........................................................................................... 1-16
RUN/STOP ..................................................................................... 1-16
SINGLE .......................................................................................... 1-17
AUTO ............................................................................................. 1-17
Knob.............................................................................................. 1-18
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Navigation Knob ............................................................................. 1-18
MENU ............................................................................................ 1-19
Record ........................................................................................... 1-20
Print .............................................................................................. 1-20
User Interface ....................................................................................... 1-21
To Use the Security Lock ........................................................................ 1-25
To Use the Built-in Help System .............................................................. 1-26
2 To Set the Vertical System...................................................................2-1
To Enable the Channel ............................................................................. 2-2
Channel Coupling .................................................................................... 2-3
Bandwidth Limit ...................................................................................... 2-3
Probe Ratio ............................................................................................. 2-4
Waveform Invert ..................................................................................... 2-5
Vertical Scale .......................................................................................... 2-5
Vertical Expansion ................................................................................... 2-6
Amplitude Unit ........................................................................................ 2-6
Channel Label ......................................................................................... 2-7
Delay Calibration ..................................................................................... 2-8
3 To Set the Horizontal System ..............................................................3-1
Delayed Sweep ....................................................................................... 3-2
Time Base Mode ..................................................................................... 3-4
Y-T Mode ......................................................................................... 3-4
X-Y Mode ......................................................................................... 3-5
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
Average ........................................................................................... 4-2
Peak Detect...................................................................................... 4-4
High Resolution ................................................................................ 4-4
Sample Mode .......................................................................................... 4-5
Sample Rate ........................................................................................... 4-6
Memory Depth ........................................................................................ 4-8
Antialiasing ........................................................................................... 4-10
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5 To Trigger the Oscilloscope ................................................................. 5-1
Trigger Source......................................................................................... 5-2
Trigger Mode........................................................................................... 5-3
Trigger Coupling ...................................................................................... 5-5
Trigger Holdoff ........................................................................................ 5-6
Noise Rejection ....................................................................................... 5-7
Trigger Type............................................................................................ 5-8
Edge Trigger..................................................................................... 5-9
Pulse Trigger .................................................................................. 5-11
Runt Trigger ................................................................................... 5-13
Windows Trigger (Option) ............................................................... 5-16
Nth Edge Trigger (Option) ............................................................... 5-18
Slope Trigger .................................................................................. 5-20
Video Trigger (HDTV Option) ........................................................... 5-23
Pattern Trigger ............................................................................... 5-25
Delay Trigger (Option)..................................................................... 5-27
TimeOut Trigger (Option) ................................................................ 5-29
Duration Trigger (Option) ................................................................ 5-31
Setup/Hold Trigger.......................................................................... 5-33
RS232 Trigger................................................................................. 5-35
I2C Trigger ..................................................................................... 5-37
SPI Trigger ..................................................................................... 5-40
USB Trigger (Option) ....................................................................... 5-42
Trigger Output Connector....................................................................... 5-44
6 To Make Measurements ...................................................................... 6-1
Math Operation ....................................................................................... 6-2
Addition ........................................................................................... 6-2
Substraction ..................................................................................... 6-3
Multiplication .................................................................................... 6-3
Division ............................................................................................ 6-4
FFT.................................................................................................. 6-5
Logic Operation ................................................................................ 6-8
Advanced Operation ........................................................................ 6-10
Auto Measurement ................................................................................ 6-13
Quick Measurement after AUTO ....................................................... 6-13
One-key Measurement of 24 Parameters .......................................... 6-15
Frequency Counter Measurement ..................................................... 6-21
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Measurement Setting ...................................................................... 6-22
To Clear the Measurement ............................................................... 6-24
All Measurement ............................................................................. 6-25
Statistic Function ............................................................................ 6-26
Measurement History ...................................................................... 6-27
Cursor Measurement ............................................................................. 6-28
Manual Mode.................................................................................. 6-29
Track Mode .................................................................................... 6-32
Auto Mode ..................................................................................... 6-35
7 Protocol Decoding ...............................................................................7-1
Parallel Decoding..................................................................................... 7-2
RS232 Decoding (Option) ........................................................................ 7-5
I2C Decoding (Option) ........................................................................... 7-10
SPI Decoding (Option) ........................................................................... 7-13
8 Reference Waveform ...........................................................................8-1
To Enable REF Function ........................................................................... 8-2
To Set the Color ...................................................................................... 8-3
To Select REF Source ............................................................................... 8-3
To Save to Internal Memory ..................................................................... 8-3
To Adjust REF Waveform Display .............................................................. 8-4
To Export to Internal or External Memory .................................................. 8-4
To Import from Internal or External Memory ............................................. 8-4
9 Pass/Fail Test ......................................................................................9-1
To Enable Pass/Fail Test ........................................................................... 9-2
To Select Source ..................................................................................... 9-2
Mask Range ............................................................................................ 9-2
Test and Ouput ....................................................................................... 9-3
To Save the Test Mask ............................................................................. 9-4
To Load the Test Mask ............................................................................. 9-5
10 Waveform Record ........................................................................... 10-1
Waveform Record .................................................................................. 10-2
Record Constant On .............................................................................. 10-4
Waveform Playback ............................................................................... 10-6
Waveform Analysis ................................................................................ 10-8
Analysis Based on Trace ................................................................ 10-12
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Analysis Based on Pass/Fail Mask ................................................... 10-13
11 Display Control ................................................................................ 11-1
To Select the Display Type ..................................................................... 11-2
To Set the Persistence Time ................................................................... 11-3
To Set the Waveform Intensity ............................................................... 11-5
To Set the Screen Grid ........................................................................... 11-5
To Set the Grid Brightness...................................................................... 11-5
To Set the Menu Display ........................................................................ 11-5
12 Store and Recall .............................................................................. 12-1
Storage System ..................................................................................... 12-2
Storage Type......................................................................................... 12-3
Internal Storage and Recall .................................................................... 12-5
External Storage and Recall.................................................................... 12-7
Disk Management................................................................................ 12-10
To Select File Type ........................................................................ 12-11
To Create a New File or Folder ....................................................... 12-12
To Delete a File or Folder............................................................... 12-15
To Rename a File or Folder ............................................................ 12-16
To Clear the Local Memory ............................................................ 12-16
Factory ............................................................................................... 12-17
13 System Function Setting ................................................................. 13-1
Remote Interface Configuration .............................................................. 13-2
LAN Setting .................................................................................... 13-2
USB Device .................................................................................... 13-6
To Set the GPIB Address ................................................................. 13-6
System-related ...................................................................................... 13-7
Sound ............................................................................................ 13-7
Language ....................................................................................... 13-7
System Information ........................................................................ 13-8
Power-off Recall.............................................................................. 13-8
System Time .................................................................................. 13-9
Screen ......................................................................................... 13-10
Self-calibration.............................................................................. 13-11
Aux Output .................................................................................. 13-12
Option Management ..................................................................... 13-13
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14 Remote Control............................................................................... 14-1
Remote Control via USB ......................................................................... 14-2
Remote Control via LAN ......................................................................... 14-6
Remote Control via GPIB........................................................................ 14-9
15 Troubleshooting.............................................................................. 15-1
16 Specifications ................................................................................. 16-1
17 Appendix ......................................................................................... 17-1
Appendix A: Accessories and Options ...................................................... 17-1
Appendix B: Warranty ............................................................................ 17-2
Appendix C: Any Question or Comment? ................................................. 17-3
Index ......................................................................................................... 1
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DS2000 User’s Guide
1 Quick Start
RIGOL
1 Quick Start
This chapter introduces the preparations when using the oscilloscope for the first
time, the front panel, rear panel and user interface of the oscilloscope as well as the
using method of the built-in help system.
The contents of this chapter:
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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
DS2000 User’s Guide
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1 Quick Start
General Inspection
1.
Inspect the shipping container for damage.
Keep the damaged shipping container or cushioning material until the contents
of the shipment have been checked for completeness and the instrument has
passed both electrical and mechanical tests.
The consigner or carrier shall be liable for the damage to instrument resulting
from shipment. RIGOL would not be responsible for free maintenance/rework
or replacement of the unit.
2.
Inspect the instrument.
In case of any damage, or defect, or failure, notify your RIGOL sales
representative.
3.
Check the Accessories
Please check the accessories according to the packing lists. If the accessories
are incomplete or damaged, please contact your RIGOL sales representative.
1-2
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1 Quick Start
Appearance and Dimensions
DS2000 User’s Guide
Figure 1-1 Front View
Unit: mm
Figure 1-2 Side View
Unit: mm
1-3
RIGOL
1 Quick Start
To Prepare the Oscilloscope for Use
To Adjust the Supporting Legs
Adjust the supporting legs properly to use them as stands to tilt the oscilloscope
upwards for stable placement of the oscilloscope as well as better operation and
observation.
Figure 1-3 To Adjust the Supporting Legs
1-4
DS2000 User’s Guide
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1 Quick Start
To Connect to Power Supply
The power requirements of DS2000 are 100-240 V, 45-440 Hz. Please use the power
cord supplied with the accessories to connect the oscilloscope to the power source.
At this point, the power key
at the lower-left corner of the front panel is in
breathing state.
Power Socket
Figure 1-4 To Connect to Power Source
DS2000 User’s Guide
1-5
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1 Quick Start
Power-on Inspection
When the oscilloscope is energized, press the power key
at the lower-left
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 sound of relay
switching. After the self-test is finished, the welcome screen is displayed and you can
view the Option Type, Option name, Option Edition and Left time of the option
currently installed in the “Installed Options” pop-up dialog box on the screen. When
the instrument is shipped, a trial version of the option is provided and the left time is
about 2000 minutes.
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1 Quick Start
To Connect the Probe
RIGOL provides passive probes for the DS2000 series oscilloscopes. For detailed
technical information of the probes, please refer to the corresponding Probe User’s
Guide. The following are the probes recommended for this oscilloscope.
Model
Description
RP3300
350 MHz, passive probe, standard
RP3500A
500 MHz, passive probe, optional
Connect the Probe:
1. Connect the BNC terminal of the probe to a channel BNC connector of the
oscilloscope at the front panel.
2. Connect the probe tip to the circuit point to be tested and connect the ground
alligator clip of the probe to the circuit ground terminal.
Figure 1-5 To Connect the Probe
DS2000 User’s Guide
1-7
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1 Quick Start
Function Inspection
1.
2.
3.
Press Storage  Default to restore the instrument to its default configuration.
Connect the ground alligator clip of the probe to the “Ground Terminal” under
the probe compensation signal output terminal.
Use the probe to connect the input terminal of CH1 of the oscilloscope and the
“Compensation Signal Output Terminal” of the probe.
Compensation Signal Output Terminal
Ground Terminal
Figure 1-6 To Use the Compensation Signal
4.
5.
Press AUTO.
Observe the waveform on the display. In normal condition, the display should be
a square waveform as shown in the figure below:
Figure 1-7 Square Waveform
6.
Use the same method to test the other channels. If the square waveforms
actually shown do not match that in the figure above, please perform “Probe
Compensation” in the next section.
WARNING
To avoid electric shock during the use of probe, please make sure that
the insulated wire of the probe is in good condition and do not touch
the metallic part of the probe when the probe is connected to high
voltage source.
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DS2000 User’s Guide
1 Quick Start
RIGOL
Tip
The signal output from the probe compensation connector can only be used for
probe compensation adjustment and can not be used for calibration.
DS2000 User’s Guide
1-9
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1 Quick Start
Probe Compensation
When the probes are used for the first time, you should compensate the probes to
match the input channels of the oscilloscope. Non-compensated or poorly
compensated probes may cause measurement inaccuracy or error. The probe
compensation procedures are as follows.
1.
2.
Perform steps 1, 2, 3 and 4 of “Function Inspection” in the previous section.
Check the waveforms displayed and compare them with the following.
Over compensated
Perfectly compensated
Under compensated
Figure 1-8 Probe Compensation
3.
1-10
Use a nonmetallic driver to adjust the low-frequency compensation adjustment
hole on the probe until the waveform displayed is as the “Perfectly
compensated” in the figure above.
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Front Panel Overview
1
2
11
12
13
3
14
15
16
4
5
17
6
7
18
19
8
9
10
20
Figure 1-9 Front Panel Overview
Table 1-1 Front Panel Description
No.
Description
No.
Description
1
Menu
11
Power Key
2
LCD
12
USB HOST
3
Multi-function Knob
13
HORIZONTAL
4
Function Menu Keys
14
Function Setting Menu Softkeys
5
Navigation Knob
15
VERTICAL
6
CLEAR
16
Analog Channel Input Area
7
AUTO
17
Waveform Record/Playback
8
RUN/STOP
18
TRIGGER
9
SINGLE
19
EXT TRIG Input Terminal
10
Help&Print
20
Probe Compensation Signal Output
Terminal/Ground Terminal
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Rear Panel Overview
1
7
6
2
5
3
4
Figure 1-10 Rear Panel Overview
1.
Handle
Pull up the handle vertically for easy carrying of the instrument. When you do
not need the handle, press it down.
2.
LAN
Connect the instrument to the network via this interface for remote control. This
oscilloscope conforms to the LXI-C class instrument standards and can quickly
build test system with other instruments.
3.
USB DEVICE
PictBridge printer or PC can be connected via this interface to print waveform
data or control the instrument using PC software.
4.
Trigger Out
The oscilloscope outputs a signal that can reflect the current capture rate of the
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oscilloscope at each trigger via this interface.
5.
Lock Hole
You can lock the instrument to a fixed location using the security lock (please
buy it yourself) via the lock hole.
6.
AC Power Socket
AC power input terminal. The power requirements of this oscilloscope are
100-240 V, 45-440 Hz, CAT II. Use the power cord provided with the accessories
to connect the instrument to AC power. Then, you can press the power key at
the front panel to start the instrument.
7.
Fuse
If a new fuse is required, please use the specified fuse (250V, T2A).
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1 Quick Start
Front Panel Function Overview
VERTICAL
CH1, CH2: analog input channels. The 2
channels are marked by different colors which
are also used to mark both the corresponding
waveforms 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.
MATH: press this key to open the math
operation menu under which add, subtract, multiply, divide, FFT, logic and advanced
operations are provided.
REF: press this key to enable the reference waveform function to compare the
waveform actually tested with the reference waveform to decide circuit failures.
POSITION: modify the vertical position of the current channel
Vertical
waveform. Turn clockwise to increase the position and turn counterclockwise to
decrease. During the modification, the waveform would move up and down and the
position message (e.g.
) at the lower-left corner of the screen
would change accordingly. Press down this knob to quickly reset the vertical position
to zero.
SCALE: modify the vertical scale of the current channel. Turn
VERTICAL
clockwise to decrease the scale and turn counterclockwise to increase. During the
modification, the amplitude of the waveform would enlarge or reduce and the scale
information (e.g.
) at the lower side of the screen would change
accordingly. Press down this knob to quickly switch the vertical scale adjustment
modes between “Coarse” and “Fine”.
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Decode1, Decode2: decoding function keys. Press the corresponding key to open
the decoding function menu. DS2000 supports parallel decoding and protocol
decodings.
HORIZONTAL
MENU: press this key to open the
horizontal control menu under which
to turn on or off the delayed sweep
function, switch between different
time base modes, switch between
“Coarse” and “Fine” adjustment of scale as well as modify the horizontal reference
setting.
SCALE: modify the horizontal time base. Turn clockwise to
HORIZONTAL
reduce the time base and turn counterclockwise to increase the time base. During
the modification, waveforms of all the channels will be displayed in expanded or
compressed mode and the time base message (e.g.
) at the upper side
of the screen would change accordingly. Press down this knob to quickly switch to
delayed sweep state.
POSITION: modify the trigger position. The trigger point
HORIZONTAL
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 (e.g.
) at the upper-right corner of
the screen would change accordingly. Press down this knob to quickly reset the
trigger position (or the delayed sweep position).
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TRIGGER
MODE: press this key to switch the trigger mode to
Auto, Normal or Single and the corresponding
state backlight of the current trigger mode would
be illuminated.
TRIGGER
LEVEL: modify the trigger level.
Turn clockwise to increase the level and turn
counterclockwise to reduce the level. During the
modification, the trigger level line would move up
and down and the value in the trigger level message box (e.g.
)
at the lower-left corner of the screen would change accordingly. Press down the
knob to quickly reset the trigger level to zero point.
MENU: press this key to open the trigger operation menu. This oscilloscope
provides various trigger types.
FORCE: in Normal and Single trigger modes, press this key to generate a trigger
signal forcefully.
CLEAR
Press this key to clear all the waveforms on the screen. If
the oscilloscope is in “RUN” state, new waveforms will
still be displayed.
RUN/STOP
Press this key to set the state of the oscilloscope to
“RUN” or “STOP”.
In “RUN” state, the key is illuminated in yellow.
In “STOP” state, the key is illuminated in red.
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SINGLE
Press this key to set the trigger mode to “Single”. In
single trigger mode, press FORCE to generate a trigger
signal immediately.
AUTO
Press this key to enable the waveform auto setting
function. The oscilloscope will automatically adjust the
vertical scale, horizontal time base and trigger mode
according to the input signal to realize optimum waveform
display. Note that auto setting requires that the frequency
of the signal under test should be no lower than 50 Hz, the
duty cycle be greater than 1% and the amplitude be at
least 20 mVpp. If the parameters exceed these limits,
“Auto failed!” would be displayed after pressing this key
and the quick parameter measurement menu might not be
displayed.
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1 Quick Start
Knob
Adjust waveform brightness:
In non-menu-operation mode (menu is hidden), turn this
knob to adjust the brightness of waveform display. The
adjustable range is from 0% to 100%. Turn clockwise to
increase the brightness and counterclockwise to reduce.
Press down this knob to reset the brightness to 50%.
You can also press Display  WaveIntensity and use
the knob to adjust the waveform brightness.
Multifunction Knob (the backlight goes on during operation):
In menu operation, press any menu softkey and turn the knob to switch the desired
submenu under this menu and then press down the knob to select the current
submenu. It can also be used to modify parameters and input filename.
Navigation Knob
This knob provides quick Adjust/Locate
function for numerical parameters with
relatively larger settable range. Turn
clockwise (counterclockwise) to
increase (reduce) the value. The inner
knob is used for fine adjustment and
the outer knob for coarse adjustment.
For example, this knob can be used to quickly locate the waveform frame (“Current
Frame” menu) to be played back in the waveform playback function. Similar menus
include trigger holdoff, pulse width setting, slope time etc.
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MENU
Measure: press this key to open the
measurement setting menu. You can set
the measurement setting, all measure,
statistic function etc.
Press MENU at the left of the screen
to open the measurement menus of 24 waveform parameters. Then, press down the
corresponding menu softkey to quickly realize one-key measurement and the
measurement result will be displayed at the bottom of the screen.
Acquire: press this key to enter the sample setting menu to set the acquisition
mode, memory depth and antialiasing function of the oscilloscope.
Storage: press this key to enter the file store and recall interface. The storable file
types include traces, waveforms, setups, picture and CSV. Internal and external
storage as well as disk management are also supported.
Cursor: press this key to enter the cursor measurement menu. The oscilloscope
provides three cursor modes: manual, track and auto.
Display: press this key to enter the display setting menu to set the display type,
persistence time, wave intensity, grid type, grid brightness and menu display time of
the 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.
Besides, some advanced functions (such as pass/fail test, waveform record and print
setting) are also supported.
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1 Quick Start
Record
Stop
Play/Pause Record
Record: press this key to start recording the waveform. The backlight is illuminated
in red. Besides, when record constant on (Open) is enabled, the backlight will also be
illuminated.
Play/Pause: in stop or pause state, press this key to play back the waveform and
press again to pause the play. The backlight is illuminated in yellow.
Stop: press this key to stop the waveform being recorded or being played back. The
backlight is illuminated in orange.
Print
Press this key to execute the print function or save the screen in the
USB storage device. If a PictBridge printer is currently connected
and the printer is in idle state, pressing this key will execute the
print function. If no printer but a USB storage device is currently
connected, pressing this key will save the screen to the USB storage
device in “.bmp” format (if the current storage type is picture, the
screen will be saved in the USB storage device in picture format).
When printer and USB storage device are connected at the same
time, the printer enjoys higher priority.
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User Interface
DS2000 provides 8.0 inches, WVGA (800*480) 160,000 color TFT LCD. What is worth
mentioning is that the 14-grid ultra-wide screen enables you to view “longer”
waveform.
1
2
3
4
5
6
12.CH1
12 垂直档位 13.CH2
13 垂直档位
14.消息框
14
7
8
15.通知区域
15
9
10
11
16.操作菜单
16
Figure 1-11 User Interface
1.
Auto Measurement Items
Provide 12 horizontal (HORIZONTAL) and 12 vertical (VERTICAL) measurement
parameters. Press the softkey at the left of the screen to activate the
corresponding measurement item. Press MENU continuously to switch between
the horizontal and vertical parameters.
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1 Quick Start
2.
Channel Label/Waveform
Different channels are marked by different colors and the color of the waveform
complies with the color of the channel.
3.
Status
Available states include RUN, STOP, T’D (triggered), WAIT and AUTO.
4.
Horizontal Time Base
 Represent the time per grid on the horizontal axis on the screen.
SCALE to modify this parameter. The range
 Use HORIZONTAL
available is from 2.000 ns to 1.000 ks.
5.
Sample Rate/Memory Depth
 Display the current sample rate and memory depth of the oscilloscope.
SCALE to modify this parameter.
 Use HORIZONTAL
6.
Waveform Memory
Provide the schematic diagram of the memory position of the waveform
currently on the screen.
waveform on the
screen
7.
Trigger Position
Display the trigger position of the waveform in the waveform memory and on
the screen.
8.
Trigger Position
POSITION to modify this parameter. Press down the
Use HORIZONTAL
knob to automatically set the parameter to zero.
9.
Trigger Type
Display the currently selected trigger type and trigger condition setting.
Different labels are displayed when different trigger types are selected.
represents triggering on the rising edge in “Edge” trigger.
For example:
10. Trigger Source
Display the trigger source currently selected (CH1, CH2, EXT, or AC Line).
Different labels are displayed when different trigger sources are selected and
the color of the trigger parameter area will change accordingly.
denotes that CH1 is selected as the trigger source.
For example:
11. Trigger Level
at the right of the screen is the trigger level label and the trigger level

value is displayed at the upper-right corner of the screen.
LEVEL to modify the trigger level, the trigger
 When using TRIGGER
.
level value will change with the up and down of
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Note: in slope trigger, runt trigger and windows trigger, there are two trigger
and
).
level labels (
12. CH1 Vertical Scale
 Display the voltage value per grid of CH1 waveform vertically.
SCALE to modify this parameter.
 Use VIRTICAL
 The following labels will be displayed according to the current channel
setting: channel coupling (e.g. ) and bandwidth limit (e.g. ).
13. CH2 Vertical Scale
 Display the voltage value per grid of CH2 waveform vertically.
SCALE to modify this parameter.
 Use VIRTICAL
 The following labels will be displayed according to the current channel
setting: channel coupling (e.g. ) and bandwidth limit (e.g. ).
14. Message Box
Display prompt messages.
15. Notification Area
Display system time, sound icon and USB storage device icon.
 System Time: displayed in “hh:mm (hour:minute)” format. When
printing or storing the waveform, the output file will contain this time
message. Press Utility  System  System Time to set through the
following format:
yyyy-mm-dd hh-mm-ss (year-month-date hour-minute-second)
will be displayed. Press Utility 
 Sound Icon: when sound is enabled,
Sound to enable or disable the sound.
 USB Storage device Icon: when a USB storage device is detected,
will
be displayed.
16. Operation MENU
Press any softkey to activate the corresponding menu. The following
symbols might be displayed in the menu:
at the front panel can be used to select parameter
Denote that
turns on when parameter selection is
items. The backlight of
valid.
Denote that
can be used to modify parameter values. The
turns on when parameter input is valid.
backlight of
Denote that you can use the Navigation Knob to quickly
adjust/locate parameters.
to adjust the parameter and then press
Denote that you can use
to select the parameter.
down
Denote that the current menu has several options.
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Denote that the current menu has a lower level menu.
Press this key to return to the previous menu.
Note: the following direction keys might appear in the grid at the lower-left
corner of the menu bar:
Denote that you can open the next page menu.
Denote that you can open the previous page menu.
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To Use the Security Lock
If needed, you can use the security lock (please buy it yourself) to lock the
oscilloscope to a fixed location. The method is as follows, 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.
Security Lock Hole
Figure 1-12 To Use the Security Lock
Note: please do not insert other articles into the security lock hole to avoid damaging
the instrument.
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1 Quick Start
To Use the Built-in Help System
The help system of this oscilloscope provides instructions for all the function keys
(including menu keys) at the 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 you can use “Button” or “Index” mode to select. The
right is “Help Display Area”.
Help Options
Help Display Area
Figure 1-13 Help Information
Button:
Default mode. In this mode, you can press the button (except the power key
and the menu page up/down key
/ ) or rotate the navigation
the knob
knob at the front panel directly to get the corresponding help information in the
“Help Display Area”.
to select “To Index” and then press the knob to switch to Index mode.
Use
,
Index:
to select the item that needs to get help (for example, “Band
In this mode, use
Width”). The item currently selected is displayed in brown. Press the knob to get the
corresponding help information in the “Help Display Area”.
to select “To Button” and then press the knob to switch to Button mode.
Use
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2 To Set the Vertical System
The contents of this chapter:










To Enable the Channel
Channel Coupling
Bandwidth Limit
Probe Ratio
Waveform Invert
Vertical Scale
Vertical Expansion
Amplitude Unit
Channel Label
Delay Calibration
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2 To Set the Vertical System
To Enable the Channel
DS2000 provides 2 analog input channels (CH1 and CH2) and provides independent
vertical control system for each channel. As the vertical system setting methods of
the 2 channels are completely the same, this chapter takes CH1 as an example to
introduce the setting method of the vertical system.
Connect a signal to the channel connector of any channel (for example, CH1) and
then press CH1 in the vertical control area (VERTICAL) at the front panel to enable
CH1.
Screen:
The channel setting menu is displayed at the right side of the screen and the channel
label at the bottom of the screen (as shown in the figure below) is highlighted. The
information displayed in the channel label is related to the current channel setting.
After the channel is turned on, modify the parameters such as the vertical scale, the
horizontal time base and the trigger mode according to the input signal to make the
waveform display easy to observe and measure.
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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 and AC components 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 blocked.
 When the coupling mode is “GND”: the DC and AC components of the signal
under test are both blocked.
Press CH1  Coupling and use
to select the desired coupling mode (the
default is DC). The current coupling mode is displayed in the channel label at the
bottom of the screen. You can also press Coupling continuously to switch the
coupling mode.
Bandwidth Limit
Set the bandwidth limit to reduce display noise. For example, the signal under test is
a pulse with high frequency oscillation.
 When bandwidth limit is disabled, the high frequency components of the signal
under test can pass the channel.
 Enable bandwidth limit and limit the bandwidth to 20 MHz or 100 MHz, the high
frequency components that exceed 20 MHz or 100 MHz are attenuated.
Note: for DS2102 and DS2072, the bandwidth limit can only be set to 20 MHz.
Press CH1  BW Limit and use
to enable or disable bandwidth limit (the
default is OFF). When bandwidth limit (20 MHz or 100 MHz) is enabled, the character
“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
Probe Ratio
You can set the probe attenuation ratio manually. The probe ratio values available
are as shown in the table below.
Table 2-1 Probe Attenuation Coefficient
Menu
0.01X
0.02X
0.05X
0.1X
0.2X
0.5X
1X
2X
5X
10X
20X
50X
100X
200X
500X
1000X
2-4
Attenuation coefficient
1:100
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
1000:1
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2 To Set the Vertical System
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 waveform invert.
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
) in the channel label at the
bottom of the screen will change accordingly during the adjustment. The adjustable
range of the vertical scale is related to the probe ratio currently set. By default, the
probe ratio is 1X and the adjustable range of the vertical scale is from 500 μV/div to
10 V/div.
Coarse adjustment (take counterclockwise as an example): set the vertical scale
in 1-2-5 step namely 500 μV/div, 1 mV/div, 2 mV/div, 5 mV/div, 10 mV/div…10
V/div.
 Fine adjustment: further adjust the vertical scale within a relatively smaller
range to improve vertical resolution. If the amplitude of the input waveform is a
little bit greater than the full scale under the current scale and the amplitude
would be a little bit lower if the next scale is used, fine adjustment can be used
to improve the amplitude of waveform display to view signal details.
SCALE to quickly switch between “Coarse”
Note: you can also press VERTICAL
and “Fine” adjustments.

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2 To Set the Vertical System
Vertical Expansion
SCALE to change the vertical scale of the analog
When using VERTICAL
channel, you can choose to expand or compress the signal vertically around the
center of the screen or the ground point of the signal.
Press Utility  System  VerticalExp to select “Center” or “Ground” and the
default is “Ground”.
 Center: when the vertical scale is modified, the waveform will expand or
compress around the center of the screen.
 Ground: when the vertical scale is modified, the waveform ground level will
remain at the same point on the screen and the waveform will expand or
compress around this point.
Amplitude Unit
Select the amplitude display unit for the current 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 select the desired unit and the default is V.
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2 To Set the Vertical System
Channel Label
You can modify the labels used to mark the analog channels (CH1 and CH2) at the
) by
left side of the screen. The label is the number of the channel (such as
default and the length of the label can not exceed 4 characters. Note: only English
input method can be used for this operation.
Press CH1 Label to enter the label modification interface as shown in the figure
below.
Name Input Area
For example, change “
Keyboard
” to “
Upper/Lower Case Switch
”.
Press Keyboard to select the “Keyboard” area. Select “Aa” using
to switch it to “aA”. Select “C” using
and press down
down
character. Use the same method to input “hn1”.
and press
to input the
To modify or delete the input character, press Name to select the “Name Input Area”
to select the character to be modified or deleted. Enter the desired
and use
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
Delay Calibration
When using an oscilloscope for actual measurement, the transmission delay of the
probe cable may bring relatively greater error (zero offset). DS2000 allows users to
set a delay time to calibrate the zero offset of the corresponding channel. Zero offset
is defined as the offset of the crossing point of the waveform and trigger level line
relative to the trigger position, as shown below.
Press CH1 Delay-Cal and use
to set the desired delay time. The range
available is from -100 ns to 100 ns.
Note: this parameter is related to the instrument model and the horizontal time base
currently set. For example, for 200 MHz models, when the horizontal time base is 5
ns, the step of delay time can be set to 0.1 ns; when the horizontal time base is 10 ns,
the step of delay time can be set to 0.2 ns; when the horizontal time base is 5 μs, the
step of delay time can be set to 100 ns; when the horizontal time base is greater than
or equal to 10 μs, the delay calibration is 0 and can not be adjusted.
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3 To Set the Horizontal System
The contents of this chapter:




Delayed Sweep
Time Base Mode
Horizontal Scale
Horizontal Reference
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3 To Set the Horizontal System
Delayed Sweep
Delayed sweep can be used to enlarge a length of waveform horizontally to view the
waveform details.
MENU
Press MENU in the horizontal control area (HORIZONTAL) at the front panel and
press Delayed to enable or disable delayed sweep. Note that to enable delayed
sweep, the current time base mode must be “Y-T” and the “Pass/Fail test” must be
disabled.
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3 To Set the Horizontal System
In delayed sweep mode, the screen is divided into two display areas as shown 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
POSITION to move the area left and right or turn
HORIZONTAL
SCALE to enlarge or reduce this area.
HORIZONTAL
The waveform after enlargement:
The waveform in the lower part of the screen is the horizontally expanded waveform.
Note: compared to the main time base, the delayed time base has increased the
waveform resolution (as shown in the figure above). The delayed time base should
be less than or equal to the main time base.
Tip
You can also press down HORIZONTAL
to directly switch to delayed sweep mode.
DS2000 User’s Guide
SCALE (delayed sweep shortcut key)
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3 To Set the Horizontal System
Time Base Mode
Press MENU in the horizontal control area (HORIZONTAL) at the front panel and
then press Time Base to select the time base mode of the oscilloscope and the
default is Y-T.
Y-T Mode
This mode is the main time base mode and is applicable to both of the input
channels.
In this mode, the Y axis represents voltage and the X axis represents time. Note that
only when this mode is enabled can “Delayed Sweep” be turned on.
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3 To Set the Horizontal System
X-Y Mode
In this mode, the oscilloscope changes the two channels from voltage-time display
mode to voltage-voltage display mode. Wherein, the X axis and Y axis tracks the
voltages of CH2 and CH1 respectively. The phase deviation between two signals with
the same frequency can be easily measured via Lissajous method. The figure below
shows the measurement schematic diagram of the phase deviation.
The signal must be
centered horizontally
IIII II
D
A
B
C
III IV
IV
III
According to sinθ=A/B or C/D (wherein, θ is the phase deviation angle between
the two channels and the definitions of A, B, C and D are as shown in the figure
above), the phase deviation angle is obtained, that is:
θ=±arcsin (A/B) or ±arcsin (C/D)
If the principal axis of the ellipse is within quadrant I and III, the phase deviation
angle obtained should be within 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 should be within quadrant II and III, namely within (π/2 to
π) or (π to 3π/2).
X-Y function can be used to measure the phase deviation occurred when the signal
under test passes through a circuit network. Connect the oscilloscope to the circuit to
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3 To Set the Horizontal System
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.
2.
3.
4.
3-6
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.
SCALE to ajdut the
Press AUTO and enable X-Y mode. Rotate Horizontal
sample rate properly to get better Lissajous figure for better observation and
measurement.
Roate VERTICAL
POSITION of CH1 and CH2 to display the signals at the
SCALE of CH1 and CH2 to make
center of the screen and roate VERTICAL
the signals easy to observe. At this point, the circle as shown in the figure below
should be displayed.
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°.
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Note:
 In Y-T mode, the oscilloscope could use any sample rate (within the guaranteed
range) to capture waveform. The maximum sample rate of X-Y mode is 1.0
GSa/s. Generally, reducing the sample rate properly could improve the display
effect of Lissajous figure.
 When X-Y mode is 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
POSITION, trigger control, memory
sweep, vector display, HORIZONTAL
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 functions of “Delay
and Phase” on page 6-17.
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3 To Set the Horizontal System
Roll Mode
In this mode, the waveform scrolls from the right to the left to update the display and
the waveform horizontal position and trigger control are not available. The range of
horizontal scale adjustment is from 200.0 ms to 1.000 ks.
Note: when Roll mode is enabled, “Delayed Sweep”, “Protocol Decoding”,
“Pass/Fail Test”, “Measurement Range”, “Waveform Record”, “To Set the
Persistence Time” and “To Trigger the Oscilloscope” are not available.
Slow Sweep
Another mode similar to Roll mode. When the horizontal time base is set to 200
ms/div or slower, the instrument enters “slow sweep” mode in which the instrument
first acquires the data at the left of the trigger point and then waits for trigger
event. After the trigger occurs, the instrument continues to finish the waveform at
the right of the trigger point. When slow sweep mode is used to observe low
frequency signal, it is recommended that the Channel Coupling is set to “DC”.
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3 To Set the Horizontal System
Horizontal Scale
Being similar to “Vertical Scale”, the horizontal scale can be adjusted in “Coarse” or
“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
counterclockwise to increase.
The scale information (such as
) at the upper left corner of the screen
will change accordingly during the adjustment. The range of horizontal scale
adjustment is from 2.000 ns to 1.000 ks.


Coarse (take counterclockwise as an example): set the horizontal scale in 1-2-5
step namely 2 ns, 5 ns, 10 ns…1.000 ks.
Fine: further adjust within smaller range.
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3 To Set the Horizontal System
Horizontal Reference
Horizontal reference is the reference position according to which the screen
waveform expands or 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 (HORIZONTAL) at the front panel to
select the desired reference mode and the default is “Center”.
1.
Center
When changing the horizontal time base, the waveform expands or compresses
horizontally around the center of the screen.
2.
Trig Pos
When changing the horizontal time base, the waveform expands or compresses
horizontally around the trigger point.
3.
User
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. For example, set the reference position to 150.
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4 To Set the Sample System
The contents of this chapter:





Acquisition Mode
Sample Mode
Sample Rate
Memory Depth
Antialiasing
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Acquisition Mode
The acquisition mode is used to control how to generate waveform points from
sample points.
Press Acquire  Acquisition in the function menu at the front panel and use
to select the desired acquisition mode (the default is normal), then press down the
knob to select this mode. You can also press Acquisition continuously to switch the
acquisition mode.
Acquire
Normal
In this mode, the oscilloscope samples the signal at equal time interval to rebuild the
waveform. For most of the waveforms, the best display effect can be obtained using
this mode.
Average
In this mode, the oscilloscope averages the waveforms from multiple samples to
reduce the random noise of the input signal and improve the vertical resolution. The
greater the number of averages is, the lower the noise will be and the higher the
vertical resolution will be but the slower the response of the displayed waveform to
the waveform changes will be.
The available range of the number of averages is from 2 to 8192 and the default is 2.
When “Average” mode is selected, press Averages and use
to set the desired
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number of averages as the power function of 2.
The Waveform before Average:
The Waveform after 256 Averages:
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4 To Set the Sample System
Peak Detect
In this mode, the oscilloscope acquires the maximum and minimum values of the
signal within the sample interval to get the envelope of the signal 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 display all the pulses with pulse widths at least as
wide as the sample period.
High Resolution
This mode uses a kind of ultra-sample technique to average the neighboring points
of the sample waveform to reduce the random noise on the input signal and generate
much smoother waveforms on the screen. This is generally used when the sample
rate of the digital converter is higher than the storage rate of the acquisition memory.
Note: “Average” and “High Res” modes use different averaging methods. The former
uses “Waveform Average” and the latter uses “Dot Average”.
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Sample Mode
This oscilloscope only supports real-time sample. In this mode, the oscilloscope
samples and displays waveform within a trigger event. The maximum real-time
sample rate of DS2000 is 2 GSa/s and the current sample rate is displayed under the
Sa Rate menu.
Tip
Press RUN/STOP to stop the sample, the oscilloscope will hold the last display. At
this point, you can still use the vertical control and horizontal control to pan and
zoom the waveform.
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Sample Rate
The sample rate of this oscilloscope is up to 2 GSa/s. Note that the sample rate is
displayed in the status bar at the upper side of the screen and in the Sa Rate menu
and can be changed by adjusting the horizontal time base (s/div) through
SCALE or modifying the memory depth.
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.
2.
Waveform Confusion: when the sample rate is lower than twice the actual
signal frequency (Nyquist Frequency), the frequency of the waveform rebuilt
from the sample data is lower than the actual signal frequency. The most
common aliasing is the jitter on fast edge.
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4 To Set the Sample System
3.
Waveform Leakage: when the sample rate is too low, the waveform rebuilt
from the sample data does not reflect all the actual signal information.
Pulse
disappeared
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4 To Set the Sample System
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. DS2000 provides up to 56 Mpts memory depth (option) and 14 Mpts
standard memory depth.
Trigger Point
T
Pre-sample
Delayed Sample
Memory Depth
The relation of memory depth, sample rate and waveform length fulfills the equation
below:
Memory depth = sample rate (Sa/s) × waveform length (s/div × div)
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 56MPoints (option). In “Auto”
mode, the oscilloscope selects the memory depth automatically according to the
current sample rate.
When CH1 and CH2 are enabled, the memory depths available include Auto, 7kPoints,
70kPoints, 700kPoints, 7MPoints and 28MPoints (option). In “Auto” mode, the
oscilloscope selects the memory depth automatically according to the current sample
rate.
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4 To Set the Sample System
Antialiasing
At slower sweep speed, the sample rate is reduced and a dedicated display algorithm
is used to minimize the possibility of aliasing.
Press Acquire  Anti-Aliasing to enable or disable the antialiasing function. By
default, antialiasing is disabled. The displayed waveforms will be more susceptible to
aliasing when this function is disabled.
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5 To Trigger the Oscilloscope
For trigger, you set certain trigger condition according to the requirement and when
a waveform in the waveform stream meets this condition, the oscilloscope captures
this waveform as well as the neighbouring part and displays them on the screen. For
digital oscilloscope, it displays waveform continuously no matter whether it is stably
triggered, but only stable trigger can ensures stable display. The trigger circuit
ensures that every time base sweep or acquisition starts from the input signal and
the user-defined trigger condition, namely every sweep is synchronous to the
acquisition and the waveforms acquired overlap to display stable waveform.
Trigger setting should be based on the features of the input signal, thus you need to
have some knowledge of the signal under test to quickly capture the desired
waveform. This oscilloscope provides abundant advanced trigger functions which can
help you to focus on the desired waveform details.
The contents of this chapter:







Trigger Source
Trigger Mode
Trigger Coupling
Trigger Holdoff
Noise Rejection
Trigger Type
Trigger Output Connector
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5 To Trigger the Oscilloscope
Trigger Source
Press MENU  Source in the trigger control area (TRIGGER) at the front panel to
select the desired trigger source. Siganls input from CH1/CH2 and the [EXT TRIG]
connector as well as the AC Line can all be used as trigger source.
MENU
Analog channel input:
Signals input from analog channels CH1 and CH2 can all be used as the trigger
source. No matter whether the input of the channel selected is enabled, the channel
can work normally.
External trigger input:
External trigger source can be used to connect external trigger signal to the EXT
TRIG channel when both of the two channels are sampling data. The trigger signal
(such as external clock and signal of the circuit to be tested) will be connected to
EXT trigger source via the [EXT TRIG] connector. You can set the trigger condition
within the range of trigger level (-4 V to +4 V).
AC line:
The trigger signal is obtained from the AC power input of the oscilloscope. This kind
of signals can be used to display the relationship between signal (such as illuminating
device) and power (power supply device). 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
Trigger Mode
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 is determined by the reference time point and
the delay setting. Note that the acquisition memory of the oscilloscope is a cyclic
buffer and the new data would overwrite the old data until the acquisition finishes.
Trigger Event
Pre-trigger Buffer
Post-trigger Buffer
Acquisition memory
Pre-trigger/Delayed trigger:
Acquire data before/after the trigger event. The trigger position is usually at the
horizontal center of the screen. In full-screen display, seven-grid pre-trigger and
delayed trigger information are displayed respectively. You can adjust the horizontal
POSITION to view more
position of the waveform through HORIZONTAL
pre-trigger information and delayed trigger information, through which the signal
information before/after the trigger (such as capture the glitch generated by the
circuit and analyze the pre-trigger data to find out the reasons for glitch) can be
obtained.
Press MODE in the trigger control area (TRIGGER) at the front panel or press
MENU  Sweep to select the desired trigger mode. The corresponding status light
of the mode currently selected turns on.
MODE
Auto
Nomal
Single
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5 To Trigger the Oscilloscope
Auto:
No matter whether the trigger condition is met, there is always waveform display. A
horizontal line is displayed when no signal is input.
In this mode, the oscilloscope operates by first filling the pre-trigger buffer. It starts
searching for a trigger after the pre-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 buffer and the first data put into the buffer
is first pushed out (First Input First Out, FIFO). When a trigger is found, the
pre-trigger buffer would contain the data acquired just before the trigger. If no
trigger is found, the oscilloscope will trigger forcefully. If forceful trigger is invalid, the
oscilloscope still displays waveform but the waveform is not stable; if forceful trigger
is valid, the oscilloscope displays stable waveform.
This trigger mode is applicable to low-repetitive-rate signals and unknown signal
levels. To display DC signals, you must use auto trigger mode.
Note: when the horizontal time base is set to 50 ms/div or greater, this trigger mode
allows the absence of trigger signal.
Normal:
Display waveform when the trigger condition is met; otherwise, the oscilloscope
holds the original waveform and waits for the next trigger.
In this mode, the oscilloscope fills the pre-trigger buffer first and then search for a
trigger while at the same time continues filling data. While searching for the trigger,
the oscilloscope overflows the pre-trigger buffer and the first data put into the buffer
is first pushed out (FIFO). When a trigger is found, the oscilloscope will fill the
post-trigger buffer and display the acquisition memory.
Use normal trigger mode for low-repetitive-rate signals or when auto trigger is not
required.
Note: in this mode, pressing FORCE can generate a trigger signal forcefully.
Single:
When this mode is selected, the backlight of SINGLE turns on. The oscilloscope
waits for a trigger and displays the waveform when the trigger condition is met and
then stops.
Note: in this mode, pressing FORCE can generate a trigger signal forcefully.
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Trigger Coupling
Trigger coupling decides which kind of components will be transmitted to the trigger
circuit. Please distinguish it with “Channel Coupling”.
 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 75 kHz).
 HF Reject: reject the high frequency components (higher than 75 kHz).
Press MENU  Setting  Coupling in the trigger control area (TRIGGER) at the
front panel to select the desired coupling type (the default is DC). Note that trigger
coupling is only valid in edge trigger.
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5 To Trigger the Oscilloscope
Trigger Holdoff
Trigger holdoff can be used to stably trigger the complex waveforms (such as pulse
series). Holdoff time is the amount of time that the oscilloscope waits before
re-arming the trigger circuitry. The oscilloscope will not trigger until the holdoff time
expires.
Trigger Position
Holdoff Time
Press MENU  Setting  Holdoff in the trigger control area (TRIGGER) at the
front panel and use
to modify the holdoff time (the default is 100 ns) until the
waveform triggers stably. The adjustable range of holdoff time is from 100 ns to 10 s.
Note that trigger holdoff is not available for Nth edge trigger, video trigger, RS232
trigger, I2C trigger, SPI trigger and USB trigger.
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Noise Rejection
Noise Rejection adds additional hysteresis to the trigger circuitry. Noise rejection
reduces the possibility of noise trigger but also reduces the trigger sensitivity;
therefore, a larger signal is required to trigger the oscilloscope.
Press MENU  Setting  Noise Reject in the trigger control area (TRIGGER) at
the front panel to enable or disable noise rejection.
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5 To Trigger the Oscilloscope
Trigger Type
DS2000 provides various trigger functions, including various serial bus triggers.
















5-8
Edge Trigger
Pulse Trigger
Runt Trigger
Windows Trigger (Option)
Nth Edge Trigger (Option)
Slope Trigger
Video Trigger (HDTV Option)
Pattern Trigger
Delay Trigger (Option)
TimeOut Trigger (Option)
Duration Trigger (Option)
Setup/Hold Trigger
RS232 Trigger
I2C Trigger
SPI Trigger
USB Trigger (Option)
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Edge Trigger
Trigger on the trigger threshold of the specified edge of the input signal.
Trigger Type:
Press Type to select “Edge”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1, CH2, EXT or AC Line as the Trigger Source. The
current trigger source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable 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 the rising edge of the input signal when the voltage level meets
the preset trigger level.

: trigger on the falling 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
voltage level meets the preset trigger level.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger coupling, trigger holdoff and
noise rejection) under this trigger type.
Trigger Level:
Trigger occurs only when the signal reaches the preset trigger level.
LEVEL to modify the level. An orange trigger level line and the
Use TRIGGER
trigger mark “ ” appear on the screen and move up and down with the rotation of
the knob, while at the same time, the trigger level value (such as
at the lower left corner of the screen also changes accordingly. When stopping
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5 To Trigger the Oscilloscope
turning the knob, the trigger level line and the trigger mark disappear in about 2 s.
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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 setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable 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.

: trigger when the positive pulse width of the input signal is lower than the
specified pulse width.

: trigger when the positive pulse width of the input signal is greater than
the specified lower limit of pulse width and lower than the upper limit of pulse
width.

: trigger when the negative pulse width of the input signal is greater than
the specified pulse width.

: trigger when the negative pulse width of the input signal is lower than
the specified pulse width.

: trigger when the negative pulse width of the input signal is greater than
the specified lower limit of pulse width and lower than the upper limit of pulse
width.
Pulse Width Setting:
In this oscilloscope, positive pulse width is defined as the time difference between
the two crossing points of the trigger level and positive pulse as shown in the figure
below.
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5 To Trigger the Oscilloscope
A
B
Trigger level
Positive
pulse width

,
,
or
, press
When the Pulse Condition is set to
Setting and use
to input the desired value. The range available is from 2 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 10 ns to 4 s. The range of the lower limit is from 2 ns to
3.99 s. Note that the lower limit of the pulse width must be lower than the upper
limit.
Trigger Mode:
Press Sweep to select the Trigger Mode (page 5-3) under this trigger type as auto,
normal or single. The corresponding status light of the current trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9.
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Runt Trigger
This trigger mode is used to trigger pulses that pass through one trigger level but
fails to pass through the other trigger level as shown in the figure below.
Trigger Type:
Press Type to select “Runt”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Pulse Polarity:
Press Polarity to select the pulse polarity of runt trigger.


: positive polarity. The instrument triggers on the positive runt pulse.
: negative polarity. The instrument triggers on the negative runt pulse.
Qualifier:
Press Qualifier to set the trigger conditions of runt trigger.
 None: do not set the trigger condition of runt trigger.
 >: trigger when the runt pulse width is greater than the lower limit of pulse
width. Press Lower Limit to set the minimum pulse width of runt trigger. The
range available is from 2 ns to 4 s.
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

5 To Trigger the Oscilloscope
<: trigger when the runt pulse width is lower than the upper limit of pulse width.
Press Upper Limit to set the maximum pulse width of runt trigger. The range
available is from 2 ns to 4 s.
<>: trigger when the runt pulse width is greater than the lower limit and lower
than the upper limit of pulse width. Press Upper Limit to set the maximum
pulse width of runt trigger and the range is from 10 ns to 4 s; press Lower
Limit to set the minimum pulse width of runt trigger and the range is from 2 ns
to 3.99 s.
Note: the lower limit of the pulse width must be lower than the upper limit.
Vertical Window:
Press Vertical to select the desired vertical window type. Note that under the “Runt
trigger” menu, you can press the trigger level knob continuously to switch among
different vertical window types.
You can select the boundary of the trigger level to be set and then use Trigger
LEVEL to adjust the trigger level. During the adjustment, two orange trigger level
and
) appear on the screen and move up and down
lines and trigger marks (
with the rotation of the knob. At the same time, the current trigger level values are
displayed at the lower left corner of the screen. The trigger level lines and trigger
marks disappear after you stop rotating the knob for 2 s.
The adjustment mode of the trigger level differs when different vertical window is
selected.

: only adjust the upper limit of the trigger level. During the adjustment,
the “Up Level” changes accordingly and “Low Level” remains unchanged.

: only adjust the lower limit of the trigger level. During the adjustment,
the “Low Level” changes accordingly and the “Up Level” remains unchanged.

: adjust the upper and lower limits of the trigger level at the same time.
During the adjustment, the “Up Level” and “Low Level” change accordingly.
Trigger Mode:
Press Sweep to select the Trigger Mode (page 5-3) under this trigger type as auto,
normal or single. The corresponding status light of the current trigger mode turns on.
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Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
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5 To Trigger the Oscilloscope
Windows Trigger (Option)
Windows trigger provides a high trigger level and a low trigger level. The instrument
triggers when the input signal passes through the high trigger level or the low trigger
level.
Trigger Type:
Press Type to select “Windows”. At this point, the trigger setting information as
shown in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable trigger.
Windows Type:
Press WndType to select the kind of edge of the input signal on which the
oscilloscope triggers.

: trigger on the rising edge of the input signal when the voltage level is
greater than the preset high trigger level.


: trigger on the falling edge of the input signal when the voltage level is
lower than the preset low trigger level.
: trigger on any edge of the input signal when the voltage level meets the
preset trigger level.
Trigger Position:
After selecting the windows type, press Position to further specify the time point of
trigger by selecting the trigger position.
 Enter: trigger when the trigger signal enters the specified trigger level range.
 Exit: trigger when the input signal exits the specified trigger level range.
 Time: used to specify the hold time of the input signal after entering the
specified trigger level range. The instrument triggers when the accumulated
hold time equals the windows time.
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Vertical Window:
Press Vertical to select the desired vertical window type. For detailed operation,
referto “Vertical Window” on page 5-14.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
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5 To Trigger the Oscilloscope
Nth Edge Trigger (Option)
Trigger on the nth edge that appears after the specified idle time, as shown in the
figure below.
Edge Type=
Edge Num=2
P1
M
P2
P3
P1/P2/P3<Idle Time<M
Trigger Type:
Press Type to select “Nth Edge”. At this point, the trigger setting information as
shown in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable trigger.
Edge Type:
Press Slope to select the kind of edge of the input signal on which the oscilloscope
triggers.

: trigger on the rising edge of the input signal when the voltage level meets
the specified trigger level.

: trigger on the falling edge of the input signal when the voltage level meets
the specified trigger level.
Idle Time:
Press Idle to set the idle time before the edge counting in Nth egde trigger. The
range available is from 16 ns to 4 s.
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Edge Number:
Press Edge to set the value of “N” in Nth edge trigger and the range available is from
1 to 65535.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameter (noise rejection) under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9.
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5 To Trigger the Oscilloscope
Slope Trigger
Trigger on the positive or negative slope of specified time.
Trigger Type:
Press Type to select “Slope”. At this point, the trigger setting information as shown
in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable trigger.
Slope Condition:
Press When to select the desired slope condition.

: trigger when the positive slope time of the input signal is greater than
the specified time.

: trigger when the positive slope time of the input signal is lower than the
specified time.

: trigger when the positive slope time of the input signal is greater than
the specified lower limit of time and lower than the specified upper limit of time.

: trigger when the negative slope time of the input signal is greater than
the specified time.

: trigger when the negative slope time of the input signal is lower than
the specified time.
: trigger when the negative slope time of the input signal is greater than

the specified lower limit of time and lower than the specified upper limit of time.
Time Setting:
In this oscilloscope, positive slope time is defined as the time difference between the
two crossing points of trigger level line A and B with the positive edge as shown in
the figure below.
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5 To Trigger the Oscilloscope
A
The upper limit of trigger level (Up Level)
B
The lower limit of trigger level (Low Level)
Positive
Slope time

,
,
or
,
When the Slope Condition is set to
press Time and use
to input the desired value. The range available is from
10 ns to 1 s.

When the Slope Condition is set to
or
, press Upper Limit
and Lower Limit and use
to input the desired values respectively. The
range of time upper limit is from 20 ns to 1 s. The range of the time lower limit is
from 10 ns to 999 ms. Note that the time lower limit must be lower than the
upper limit.
Vertical Window:
Press Vertical to select the desired vertical window. Note that under the “Slope”
trigger menu, you can also press down the trigger level knob continuously to switch
the vertical window.
You can select the boundaries of the trigger level and then use TRIGGER
LEVEL
to adjust the trigger level. During the adjustment, two orange trigger level lines and
and
) appear on the screen and move up and down with
two trigger marks (
the rotation of the knob, while at the same time, the trigger level value and the slope
value are displayed at the lower left corner of the screen. When stopping turning the
knob, the trigger level lines and trigger marks disappear in about 2 s. When the
or
, the current trigger level and slope
Slope Condition is set to
range will be displayed at the lower left corner of the screen.
SlewRate =
UpLevel− LowLevel
TimeSettingValue
SlewRate =
UpLevel − LowLevel UpLevel − LowLevel
~
TimeUpperLimit
TimeLowerLimit
The adjustment mode of the trigger level is different when different vertical window
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5 To Trigger the Oscilloscope
is selected.

: only adjust the upper limit of the trigger level. During the adjustment,
“UP Level” and “Slew Rate” change accordingly but “Low Level” remains
unchanged.

: only adjust the lower limit of the trigger level. During the adjustment,
“Low Level” and “Slew Rate” change accordingly but “UP Level” remains
unchanged.

: adjust the upper and lower limits of the trigger level at the same time.
During the adjustment, “UP Level” and “Low Level” change accordingly but
“Slew Rate” remains unchanged.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
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5 To Trigger the Oscilloscope
Video Trigger (HDTV Option)
Trigger on the standard video signal field or line of NTSC (National Television
Standards Committee), PAL (Phase Alternating Line), SECAM (sequential color with
memory) or HDTV (High Definition Television).
Trigger Type:
Press Type to select “Video”. At this point, the trigger setting information as shown
in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable trigger.
Video Polarity:
Press Polarity to select the desired video polarity. The polarities available are normal
polarity ( ) and inverted polarity (
).
Sync:
Press Sync to select the desired sync type.
 All Lines: trigger on all the horizontal sync pulses.
 Line Num: for NTSC and PAL/SECAM video standards, trigger on the specified
line in the odd or even field; for HDTV video standard, trigger on the specified
line. Note that when this sync trigger mode is selected, you can modify the line
number using
in the Line Num menu with a step of 1. The range of the line
number is from 1 to 525 (NTSC), 1 to 625 (PAL/SECAM), 1 to 525 (480P), 1 to
625 (576P), 1 to 750 (720P), 1 to 1125 (1080P) or 1 to 1125 (1080I).
 Odd field: trigger on the rising edge of the first ramp waveform pulse in the odd
field.
 Even field: trigger on the rising edge of the first ramp waveform pulse in the
even field.
Video Standard:
Press Standard to select the desired video standard.
 NTSC: the field frequency is 60 fields per second and the frame frequency is 30
frames per second. The TV sweep line is 525 with the even field goes first and
the odd field follows behind.
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


5 To Trigger the Oscilloscope
PAL: the frame frequency is 25 frames per second. The TV sweep line is 625
with the odd field goes first and the even field follows behind.
SECAM: the frame frequency is 25 frames per second. The sweep line is 625
with interlacing sweep.
HDTV: HDTV consists of 480P, 576P, 720P, 1080P and 1080I display formats.
The specified video standards are as follows:
480P
576P
720P
1080P
1080I
the frame frequency is 60 frames per second; the TV sweep
line is 525; line-by-line sweep; the line frequency is 31.5
kHz.
the frame frequency is 60 frames per second; the TV sweep
line is 625; line-by-line sweep.
the frame frequency is 60 frames per second; the TV sweep
line is 750; line-by-line sweep; the line frequency is 45 kHz;
the field frequencies available are 60 Hz, 50 Hz, 30 Hz, 25
Hz and 24 Hz.
the frame frequency is 60 frames per second; the TV sweep
line is 1125; line-by-line sweep; the field frequencies
available are 60 Hz, 50 Hz, 30 Hz, 25 Hz and 24 Hz.
the frame frequency is 25 to 30 frames per second; the TV
sweep line is 1125; interlacing sweep; the line frequency is
33.75 kHz; the field frequencies available are 30 Hz, 25 Hz
and 24 Hz.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameter (noise rejection) under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9.
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Pattern Trigger
Identify a trigger condition by looking for a specified pattern. This pattern is a logical
“AND” combination of the two channels. Each channel can have a value of high (H),
low (L) or don’t care (X). A rising or falling edge can be specified for one channel
included in the pattern. When an edge is specified, the oscilloscope will trigger at the
edge specified if the pattern set for the other channel is true (H or L). If no edge is
specified, the oscilloscope will trigger on the last edge that makes the pattern true. If
both the channels in the pattern are set to “Don’t Care”, the oscilloscope will not
trigger.
H
L
Trigger Type:
Press Type to select “Pattern”. At this point, the trigger setting information as shown
in the figure below is displayed at the upper right corner of the screen.
Channel Selection:
Press Source to select CH1 or CH2 as the channel source for H, L, X or edge
condition. The current signal source is displayed at the upper right corner of the
screen.
Pattern Setting:
Press Code to set the pattern of the current channel. At this point, the pattern
setting area (as shown in the figure below) is displayed at the bottom of the screen.



: set the pattern of the channel selected to “H”, namely the voltage level is
higher than the threshold level of the channel.
: set the pattern of the channel selected to “L”, namely the voltage level is
lower than the threshold level of the channel.
: set the pattern of the channel selected to “Don’t Care”, namely this channel is
not used as a part of the pattern. When both the channels in the pattern are set
to “Don’t Care”, the oscilloscope will not trigger.
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
5 To Trigger the Oscilloscope
or
: set the pattern to the rising or falling edge of the channel selected.
Note: only one rising or falling edge can be specified in the pattern. If one edge item
is currently defined and then another edge item is defined in another channel in the
pattern, the former edge item defined will be replaced by X.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9. Note that the trigger level of each
channel needs to be set respectively.
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5 To Trigger the Oscilloscope
Delay Trigger (Option)
Trigger when the time difference (△T) between the specified edges of source A and
source B meets the preset time limit, as shown in the figure below. Note that edge A
and edge B must be neighbouring edges.
Edge A=
Edge B=
Source A
Source B
T
Trigger Type:
Press Type to select “Delay”. At this point, the trigger setting information as shown
in the figure below is displayed at the upper right corner of the screen.
Source A:
Press SourceA to select CH1 or CH2 as the trigger source of signal source A.
Edge A:
Press EdgeA to selec the trigger edge type of signal source A in delay trigger. It can
be set to the rising edge or falling edge.
Source B:
Press SourceB to select CH1 or CH2 as the trigger source of signal source B.
Edge B:
Press EdgeB to select the trigger edge type of signal source B in delay trigger. It can
be set to the rising edge or falling edge.
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5 To Trigger the Oscilloscope
Delay Type:
Press DelayType to set the time limit condition of delay trigger.
 >: trigger when the time difference (△T) between the specified edges of source
A and source B is greater than the preset time limit. Press Time to set the delay
time in delay trigger and the range is from 2 ns to 4 s.
 <: trigger when the time difference (△T) between the specified edges of source
A and source B is lower than the preset time limit. Press Time to set the delay
time in delay trigger and the range is from 2 ns to 4 s.
 <>: trigger when the time difference (△T) between the specified edges of
source A and source B is greater than the lower limit of the preset time and
lower than the upper limit of the preset time. Press Upper Limit to set the
upper limit of the delay time in delay trigger and the range is from 12 ns to 4 s.
Press Lower Limit to set the lower limit of the delay time in delay trigger and
the range is from 2 ns to 3.99 s. Note that the time lower limit must be lower
than the time upper limit.
 ><: trigger when the time difference (△T) between the specified edges of
source A and source B is lower than the lower limit of the preset time or greater
than the upper limit of the preset time. Press Upper Limit to set the upper limit
of the delay time in delay trigger and the range is from 12 ns to 4 s. Press
Lower Limit to set the lower limit of the delay time in delay trigger and the
range is from 2 ns to 3.99 s. Note that the time lower limit must be lower than
the time 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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9.
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5 To Trigger the Oscilloscope
TimeOut Trigger (Option)
Trigger when the time interval (△T) from when the rising edge (or falling edge) of
the input signal passes through the trigger level to when the neighbouring falling
edge (or rising edge) passes through the trigger level is greater than the timeout
time set, as shown in the figure below.
T
Time Out< T
Time Out
Trigger Type:
Press Type to select “TimeOut”. At this point, the trigger setting information as
shown in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable trigger.
Edge Type:
Press Slope to select the type of the first edge of the input signal that passes
through the trigger level.

: start timing when the rising edge of the input signal passes through the
trigger level.


: start timing when the falling edge of the input signal passes through the
trigger level.
: start timing when any edge of the input signal passes through the trigger
level.
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5 To Trigger the Oscilloscope
Timeout Time:
Press TimeOut to set the timeout time of timeout trigger and the range is from 16
ns to 4 s.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9.
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5 To Trigger the Oscilloscope
Duration Trigger (Option)
Identify a trigger condition by looking for the duration of a specified pattern. This
pattern is a logical “AND” combination of the two channels. Each channel can have a
value of high (H), low (L) or don’t care (X). The instrument triggers when the
duration (△T) of this pattern meets the preset time, as shown in the figure below.
T
T
CH1=H
CH2=L
CH1
CH2
Trigger Type:
Press Type to select “Duration”. At this point, the trigger setting information as
shown in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the channel source of H, L or X. The current
signal source is displayed at the upper right corner of the screen.
Pattern Setting:
Press Code to set the pattern of the current channel. At this point, the pattern
setting area (as shown in the figure below) is displayed at the bottom of the screen.



: set the pattern of the channel selected to “H”, namely the voltage level is
higher than the threshold level of the channel.
: set the pattern of the channel selected to “L”, namely the voltage level is
lower than the threshold level of the channel.
: set the pattern of the channel selected to “Don’t Care”, namely this channel is
not used as a part of the pattern. When both the channels in the pattern are set
to “Don’t Care”, the oscilloscope will not trigger.
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5 To Trigger the Oscilloscope
Trigger Condition:
Press When to select the desired trigger condition.
 >: trigger when the duration of the pattern is greater than the preset time.
Press Time to set the duration of duration trigger and the range is from 2 ns to
4 s.
 <: trigger when the duration of the pattern is lower than the preset time. Press
Time to set the duration of duration trigger and the range is from 2 ns to 4 s.
 <>: trigger when the duration of the pattern is lower than the upper limit of the
preset time and greater than the lower limit of the preset time. Press Upper
Limit to set the upper limit of the duration of duration trigger and the range is
from 12 ns to 4 s. Press Lower Limit to set the lower limit of the duration of
duration trigger and the range is from 2 ns to 3.99 s. Note that the time lower
limit must be lower than the time 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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9. Note that the trigger level of each
channel needs to be set respectively.
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5 To Trigger the Oscilloscope
Setup/Hold Trigger
Trigger when the internal state of the setup or hold time relative to the clock edge is
changed by the logic data input, namely trigger when the setup time (△T1) is less
than the preset setup time or when the hold time (△T2) is less than the preset hold
time, as shown in the figure below.
T1
T1 is the setup time
T2
T2 is the hold time
Data Source
Clock Source
The edge type is
The data type is H
Trigger Type:
Press Type to select “Setup/Hold”. At this point, the trigger setting information as
shown in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press DataSrc and ClkSrc to set the data sources of the data line and clock line
respectively. They can be set to CH1 or CH2 and the current data sources are
displayed at the upper right corner of the screen.
Edge Type:
Press Slope to select the desired clock edge type and it can se set to the rising edge
or falling edge.
Data Type:
Press Pattern to set the effective pattern of the data signal to H (high level) or L
(low level).
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5 To Trigger the Oscilloscope
Setup Type:
Press SetupType to select the desired setup type.
 Setup: set the time that the data stays stable and constant before the clock
edge appears. Press Setup to set the setup time and the range is from 2 ns to 1
s.
 Hold: set the time that the data stays stable and constant after the clock edge
appears. Press Hold to set the hold time and the range is from 2 ns to 1 s.
 SetupHold: set the time that the data stays stable and constant before and
after the clock edge appears. Press Setup and Hold to set the setup time and
hold time respectively and the range is from 2 ns to 1 s.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
LEVEL to modify the level. For details, please refer to the
Use TRIGGER
description of “Trigger Level” on page 5-9.
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RS232 Trigger
Trigger according to the start frame, error frame, check error or data. Below is the
explanatory figure of RS232 protocol.
Trigger Type:
Press Type to select “RS232”. At this point, the trigger setting information as shown
in the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 or CH2 as the Trigger Source. The current trigger
source is displayed at the upper right corner of the screen.
Polarity
Press Polarity to select the polarity of date transmission. It can be set to “Normal”
or “Invert” and the default is normal.
Trigger Condition:
Press When to select the desired trigger condition.
 Start: trigger on the start frame position.
 Error: trigger when error frame is detected. After this trigger condition is
selected:
--press Stop Bit to select “1 bit” or “2 bit”;
--press Even-OddCheck to select “None”, “Odd Checkout” or “Even Checkout”.
The oscilloscope will determine error frame according to the preset parameters.
 Check Error: trigger when check error is detected. When this trigger condition is
selected, press Even-OddCheck to select “Odd Checkout” or “Even Checkout”.
The oscilloscope will determine check error according to the preset parameters.
 Data: trigger on the last bit of the preset data bits and even-odd check bits.
When this trigger condition is selected:
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5 To Trigger the Oscilloscope
--press Data Bits to select “5 bit”, “6 bit”, “7 bit” or “8 bit”;
--press Data and input the data value according to the setting in Data Bits and
the upper limits are 31, 63, 127 and 255 respectively.
Baud Rate:
Set the baud rate of data transmmision (equal to specifying a clock frequency). Press
Baud to set the desired baud rate to 2400 bps, 4800 bps, 9600 bps (default), 19200
bps, 38400 bps, 57600 bps, 115200 bps and user-defined. When “User” is selected,
press Setup and use
to set a more specific value from 1 to 900000 with an
adjustment step of 1 bps.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameter (noise rejection) under this trigger type.
Trigger Level:
Use TRIGGER
LEVEL to modify the level. For details, please refer to the
description of “Trigger Level” on page 5-9.
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I2C Trigger
Trigger on the start condition, restart, stop, missing acknowledgement or on the
read/write frame with specific device address and data value. In I2C trigger, you
need to specify the SCL and SDA data sources. The figure below shows the complete
data transmission of I2C bus.
Trigger Type:
Press Type to select “I2C”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press SCL and SDA to specify the data sources of SCL and SDA respectively. They
can be set to CH1 or CH2 and the current trigger sources are displayed at the upper
right corner of the screen.
Trigger Condition:
Press When to select the desired trigger condition.
 Start: trigger when SDA data transitions from high to low while SCL is high.
 Restart: trigger when another start condition occurs before a stop condition.
 Stop: trigger when SDA data transitions from low to high while SCL is high.
 Missing ACK: trigger when the SDA data is high during any acknowledgement of
SCL clock position.
 Address: trigger on the clock (SCL) edge corresponding to the byte of data (SDA)
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

5 To Trigger the Oscilloscope
behind the preset address (Write, Read or R/W direction). After this trigger
condition is selected:
--press AddrBits to select “7 bit”, “8 bit” or “10 bit”;
--press Address to set the address value according to the setting in AddrBits
and the ranges are from 0 to 127, 0 to 255 and 0 to 1023 respectively;
--press Direction to select “Read”, “Write” or “R/W” (note: when AddrBits is
set to “8 bit”, this setting is not available).
Data: the trigger searches for the control byte value on the data line (SDA)
following which there is a reading bit and an acknowledgement bit and then
searches for the specified data value. When this event occurs, the oscilloscope
will trigger on the clock edge of the acknowledgement bit behind the data byte.
After this trigger condition is selected:
--press Byte Length to set the length of the data and the range is from 1 to 5;
--press CurrentBit to select the desired data bit and the range is from 0 to
(Byte Length×8-1);
--press Data to set the data pattern of the current data bit to X, H or L.
--press AllBits to set the data pattern of all the data bits to the data pattern
specified in Data.
A&D: trigger when the “Address” and “Data” conditions are met at the same
time. After this trigger condition is selected:
--press AddrBits to select “7 bit” ,“8 bit” or “10 bit”;
--press Address to set the address value according to the setting in AddrBits
and the ranges are from 0 to 127, 0 to 255 and 0 to 1023 respectively;
--press Byte Length to set the length of the data and the range is from 1 to 5;
--press CurrentBit to select the desired data bit and the range is from 0 to
(Byte Length×8-1);
--press Data to set the data pattern of the current data bit to X, H or L.
--press AllBits to set the data pattern of all the data bits to the data pattern
specified in Data.
--press Direction to select “Read”, “Write” or “R/W” (note: when AddrBits is
set to “8 bit”, this setting is not available).
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 trigger mode turns on.
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Trigger Setting:
Press Setting to set the trigger parameter (noise rejection) under this trigger type.
Trigger Level:
Use TRIGGER
LEVEL to modify the trigger level of SCL or SDA channel. For
details, please refer to the description of “Trigger Level” on page 5-9.
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5 To Trigger the Oscilloscope
SPI Trigger
Trigger on the data pattern on the specified edge. When using SPI trigger, you need
to specify the SCL and SDA data sources. Below is the sequence chart of SPI bus data
transmission.
Processor 1[SPI Host]
Processor 2[SPI Slave]
SDOx
SDIx
Serial Data Line Buffer
(SPIxRXB)
Serial Data Line Buffer
(SPIxRXB)
SDIx
Shift Register
SPIxSR
Highest Bit
SDOx
Lowest Bit
Highest Bit
Lowest Bit
Serial Transmission Buffer
(SPIxTXB)
Serial Transmission Buffer
(SPIxTXB)
SPI Buffer
SPIxBUF
Shift Register
SPIxSR
SCKx
Serial Clock
SCKx
SPI Buffer
SPIxBUF
Trigger Type:
Press Type to select “SPI”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press SCL and SDA to specify the data sources of SCL and SDA respectively. They
can be set to CH1 or CH2 and the current trigger source is displayed at the upper
right corner of the screen.
Data Line Setting:
Set the instrument to trigger when the specified bit and length of data is transmitted
in the SDA.
 Press Data Bits to set the number of bits of the serial data character string. It
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


RIGOL
can be set to any integer between 4 and 32.
Press CurrentBit to set the number of the data bit and the range is from 0 to
(value sepecified in Data Bits – 1).
Press Data to set the value of the current bit to H, L or X.
Press AllBits to set all the data bits to the value specified in Data.
Trigger Condition:
The default trigger condition of this oscilloscope is timeout and you can not set it.
TimeOut:
Set the minimum time that the clock (SCL) signal must be idle before the oscilloscope
starts to search for the data (SDA) on which to trigger. Press TimeOut to set the
timeout value and the range is from 100 ns to 1 s.
Clock Edge:
Press Clock Edge to select the desired clock edge.

: sample the SDA data on the rising edge of the clock.

: sample the SDA data on the falling edge of the clock.
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 trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameter (noise rejection) under this trigger type.
Trigger Level:
Use TRIGGER
LEVEL to modify the level. For details, please refer to the
description of “Trigger Level” on page 5-9.
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5 To Trigger the Oscilloscope
USB Trigger (Option)
Trigger on the SOP, EOP, RC, Suspend and Exit Suspend of the data packet on the
differential USB data cable (D+ and D-). This trigger supports USB Low Speed and
Full Speed. The figure below shows the USB data transmission protocol.
Trigger Type:
Press Type to select “USB”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press D+ and D- to specify data sources for D+ and D- data cables respectively.
They can be set to CH1 or CH2 and the current trigger sources are displayed at the
upper right corner of the screen.
Signal Speed:
Press Speed to select “Low Speed” (1.5 Mb/s) or “Full Speed” (12 Mb/s).
Trigger Condition:
Press When to select the desired trigger condition.
 SOP: trigger at the sync bit at the start of the data packet (SOP).
 EOP: trigger at the end of the SEO portion of the EOP of the data packet.
 RC: trigger when SEO is greater than 10 ms.
 Suspend: trigger when the idle time of the bus is greater than 3 ms.
 ExitSuspend: trigger when the bus exits from idle state for more than 10 ms.
Trigger Mode:
Press Sweep to select the Trigger Mode (page 5-3) under this trigger type as auto,
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5 To Trigger the Oscilloscope
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normal or single. The corresponding status light of the current trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameter (noise rejection) under this trigger type.
Trigger Level:
Use TRIGGER
LEVEL to modify the level. For details, please refer to the
description of “Trigger Level” on page 5-9.
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5 To Trigger the Oscilloscope
Trigger Output Connector
The trigger output connector at the rear panel can output trigger signals determined
by the current setting.
Trigger Output Connector
Press Utility  AuxOutput to select “TrigOut”. When the oscilloscope is triggered,
it will output a trigger signal determined by the current trigger setting through the
[Trigger Out] connector.
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6 To Make Measurements
DS2000 can make math operation, cursor measurement and auto measurement on
sampled and displayed data.
The contents of this chapter:



Math Operation
Auto Measurement
Cursor Measurement
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6 To Make Measurements
Math Operation
DS2000 can realize various math operations (including: addition (A+B), subtraction
(A-B), multiplication (AxB), division (A÷B), FFT, logic operation and advanced
operation) of waveforms between channels. The results of math operation also
allows further measurement (for details, please refer to “Cursor Measurement”).
MATH
Press MATH  Operate in the vertical control area (VERTICAL) at the front panel
to select the desired operation function. The result of math operation is displayed on
the waveform marked with “M” on the screen.
Addition
Add the waveform voltage values of signal source A and B point by point and display
the results.
Press MATH  Operate to select “A+B”:
 Press Source A and Source B to select the desired channels (CH1 or CH2).

Press



Press
and use
to adjust the vertical scale of the operation results.
Press Invert to turn the inverted display of the operation results on or off.
HORIZONTAL
POSITION and HORIZONTAL
SCALE can also be
used to adjust the horizontal position and scale of the operation results.
6-2
and use
to adjust the vertical position of the operation results.
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Substraction
Subtract the waveform voltage values of signal source B from that of source A point
by point and display the results.
Press MATH  Operate to select “A-B”:
 Press Source A and Source B to select the desired channels (CH1 or CH2).

Press
and use
to adjust the vertical position of the operation results.



Press
and use
to adjust the vertical scale of the operation results.
Press Invert to turn the inverted display of the operation results on or off.
HORIZONTAL
POSITION and HORIZONTAL
SCALE can also be
used to adjust the horizontal position and scale of the operation results.
Multiplication
Multiply the waveform voltage values of signal source A and B point by point and
display the results.
Press MATH  Operate to select “A x B”:
 Press Source A and Source B to select the desired channels (CH1 or CH2).

Press
and use



Press
and use
to adjust the vertical scale of the operation results.
Press Invert to turn the inverted display of the operation results on or off.
HORIZONTAL
POSITION and HORIZONTAL
SCALE can also be
used to adjust the horizontal position and scale of the operation results.
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to adjust the vertical position of the operation results.
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6 To Make Measurements
Division
Divide the waveform voltage values of signal source A by that of source B point by
point and display the results. It can be used to analyze the multiple relationships of
waveforms in two channels. Note that when the voltage value of channel B is 0, the
result of the division is treated as 0.
Press MATH  Operate to select “A ÷ B”:
 Press Source A and Source B to select the desired channels (CH1 or CH2).

Press



Press
and use
to adjust the vertical scale of the operation results.
Press Invert to turn the inverted display of the operation results on or off.
HORIZONTAL
POSITION and HORIZONTAL
SCALE can also be
used to adjust the horizontal position and scale of the operation results.
6-4
and use
to adjust the vertical position of the operation results.
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6 To Make Measurements
FFT
FFT is used to quickly perform Fourier transform on specified signals and transform
time domain signals to frequency domain signals. FFT operation can facilitate the
following works:
 Measure harmonic components and distortion in the system
 Measure the characteristics of the noise in DC power
 Analyze vibration
Press MATH  Operate to select “FFT” and set the parameters of FFT operation.
Frequency Domain Waveform
Vertical Amplitude
Horizontal Scale
Time Domain Waveform
FFT Sample Rate Center Frequency
1.
Select Source
Press Source to select the desired channel (CH1 or CH2).
2.
Select Window Function
Spectral leakage can be considerably decreased when a window function is used.
DS2000 provides four kinds of FFT window functions which have different
characteristics and are applicable to measure different waveforms. You need to
select the window function according to different waveforms and their
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6 To Make Measurements
characteristics. Press Window to select the desired window function and the
default is “Rectangle”.
Table 6-1 Window Functions
3.
6-6
Waveforms Suitable for
Measurement
Transient or short pulse, the signal
levels before and after the
multiplication are basically the same;
Sine waveforms with the same
amplitude and rather similar
frequencies;
Wide band random noise with
relatively slowly changing waveform
spectrum.
Window
Characteristics
Rectangle
The best frequency
resolution;
the poorest amplitude
resolution;
similar to the situation
when no window is
multiplied.
Hanning
Better frequency
resolution;
poorer amplitude
resolution.
Sine, periodic and narrow band
random noise.
Hamming
A little bit better
frequency resolution
than Hanning
Transient or short pulse, the signal
levels before and after the
multiplication are rather different.
Blackman
The best amplitude
resolution;
the poorest frequency
resolution
Single frequency signal, search for
higher order harmonics.
Set the Display Mode
Press Display to select “Split” (default) or “Full Screen” display mode.
Split: the source channel and the FFT operation results are displayed separately.
The time domain and frequency domain signals are displayed clearly.
Full Screen: the source channel and the FFT operation results are displayed in
the same window to view the frequency spectrum more clearly and to perform
more precise measurement.
Note: in FFT mode and when MATH is the active channel, you can also press
SCALE to switch between “Split” and “Full Screen”.
HORIZONTAL
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6 To Make Measurements
4.
Set the Vertical Scale
In FFT measurement, the unit of the horizontal axis changes from time to
SCALE and HORIZONTAL
POSITION
frequency. Use HORIZONTAL
to set the scale and position of the horizontal axis respectively.
The unit of the vertical axis can be dB or Vrms which use logarithmic mode and
linear mode to display vertical amplitude respectively. If you need to display the
FFT frequency spectrum in a relatively larger dynamic range, dB is
recommended. Press Scale to select the desired unit and the default is Vrms.
Press
and
and use
to set the vertical position and amplitude of
the FFT frequency spectrum respectively.
Tips
Signals with DC components or deviation would cause error or deviation of the
FFT waveform components. To reduce the DC components, set the “Channel
Coupling” to “AC”.
To reduce the random noise and aliasing frequency components of repetitive or
single pulse, set the “Acquisition Mode” of the oscilloscope to “Average”.
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6 To Make Measurements
Logic Operation
Perform logic operation on the waveform voltage values of the specified sources
point by point and display the results. In operation, when the voltage value of the
source channel is greater than the threshold of the corresponding channel, it is
regarded as logic “1”; otherwise logic “0”. The following common logic operation
expressions are provided.
Table 6-2 Logic Operation
Operation
AND
OR
NOT
XOR
6-8
Description
The results of logic AND operation of two binary bits are as follows:
A
B
A AND B
0
0
0
0
1
0
1
0
0
1
1
1
The results of logic OR operation of two binary bits are as follows:
A
B
A OR B
0
0
0
0
1
1
1
0
1
1
1
1
The results of logic NOT operation of a binary bit are as follows:
A
NOT A
0
1
1
0
The results of logic XOR operation of two binary bits are as follows:
A
B
A XOR B
0
0
0
0
1
1
1
0
1
1
1
0
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Press MATH  Operate to select “Logic”:
 Press Log.Formula to select the desired operation expression and the default is
“AND”.
 Press Source A and Source B to select the desired channels (CH1 or CH2).

Press



Press
and use
to adjust the vertical scale of the operation results.
Press Invert to turn the inverted display of the operation results on or off.
Press Threshold A and use
to set the threshold of source A in logic
operation.
Press Threshold B and use
to set the threshold of source B in logic
operation.
POSITION and HORIZONTAL
SCALE can also be
HORIZONTAL
used to adjust the horizontal position and scale of the operation results.


and use
DS2000 User’s Guide
to adjust the vertical position of the operation results.
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6 To Make Measurements
Advanced Operation
DS2000 provides advanced operation function that allows users to define operation
functions. Press MATH  Operate  “Advanced”  Expression  “ON” and the
editing window as shown in the figure below is displayed.
to select any item in “Channel”, “Function”, “Variable”, “Operator” and
Turn
“Figure” (if they are currently available for selection), then press down the knob and
the item selected will de displayed in the entry box on the right of the “Expression”.
During the expression editing, you can press Delete to delete the character
currently at the left of the cursor and press Clear to delete all the characters in the
entry box at any time.
After finishing the expression editing, press Apply and the oscilloscope will operate
according to the expression you set and display the result. Note that, after Apply is
pressed, the Expression menu will be automatically set to “OFF” but the preset
expression will still be displayed at the bottom of the screen for your reference. You
can also press Invert to turn the inverted display of the operation results on or off.
The following are descriptions of the contents in the editing window.
1.
6-10
Expression
Here, it refers to the formulas formed by channel, function, variable, operator
and figure. The length of the expression is limited to 64 bytes.
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6 To Make Measurements
2.
Channel
You can select any channel (CH1 or CH2).
3.
Function
Please refer to the following table to get the functions of each function. Note
that the left brackets “(” here are only used to facilitate your entry and they are
not a part of the function names.
Table 6-3 Functions
4.
Name
Function
Intg(
Calculate the integral of the selected source. You can use
integral to measure the area under a waveform or the pulse
energy.
Diff(
Calculate the discrete time differentiate of the selected
source. You can use differentiate to measure the
instantaneous slope of a waveform.
Log(
Calculate the natural logarithm of the selected source (use
constant e (approximately 2.718282) as the base).
Exp(
Calculate the exponent of the selected source. For example,
Exp(A) means calculate the Ath power of e.
Sqrt(
Calculate the square root of the selected source.
Sine(
Calculate the sine value of the selected source.
Cosine(
Calculate the cosine value of the selected source.
Tangent(
Calculate the tangent value of the selected source.
Variable
Users can set the desired values of Variable1 and Variable2. Press Variable to
turn on the variable setting menu.
 Variable: press this softkey to select the variable to be set as “Variable1”
and “Variable2”.
 Step: press this softkey to set the step used when using the knob to modify
the “Mantissa”. The steps available are × 1, × 0.1, × 0.01, × 0.001 and ×
0.0001.
 Mantissa: press this softkey to set the number of significant digits of the
variable. After setting the “Step” and pressing this softkey, turn the knob to
modify this parameter. The range available is from -9.9999 to 9.9999.
 Exponent: press this softkey to set the numeric values of the exponents
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6 To Make Measurements
with 10 as the bottom number in the variables. The range is from -9 to 9.
For example, Variable1 is set to 6.1074×108 via the following settings.
Variable:
Variable1
Mantissa:
6.1074
Exponent:
8
5.
Operator
Please refer to the following table to get the functions of each operator.
Table 6-4 Operators
Operator
+
(
- *
/
)
<>
==
!(
Function
||
Arithmetic operators: add, subtract, multiply and divide
Parentheses: used to increase the priority of the operation
enclosed in the parentheses
<= >=
!=
&&
Relationship operators: lower than, greater than, lower
than or equal to, greater than or equal to, equal to, not
equal to
Logic operator: NOT, OR, AND
Note: in division operation, when the divisor is 0, the result of the division is
treated as 0.
6.
6-12
Figure
Select from figure 0 to 9, decimal point and character E. Wherein, character E
represents the nth power of 10. For example, 1.5E3 means 1.5×103.
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6 To Make Measurements
Auto Measurement
DS2000 provides auto measurements of 24 waveform parameters and the statistics
and analysis of the measurement results. What’s more, you can also use the
frequency counter to realize more precise frequency measurement.
MENU
Measure
Quick Measurement after AUTO
When the oscilloscope is correctly connected and has detected input signal, press
Auto to enable waveform auto setting function and open the following function
menu:
Single-period: measure the “Period” and “Frequency “of the
current signal within a single period and display the measurement
results at the bottom of the screen.
Multi-period: measure the “Period” and “Frequency “of the
current signal within multiple periods and display the
measurement results at the bottom of the screen.
Rise Time: measure the “Rise Time” of the current signal and
display the measurement result at the bottom of the screen.
Fall Time: measure the “Fall Time” of the current signal and
display the measurement result at the bottom of the screen.
Note: the AUTO function requires that the frequency of the signal under test should
be no lower than 50 Hz, the duty cycle be greater than 1% and the amplitude be at
least 20 mVpp. If the parameters of the signal under test exceed these limits, after
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6 To Make Measurements
this softkey is pressed, the quick parameter measurement items might not be
displayed in the pop-up menu.
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One-key Measurement of 24 Parameters
Press MENU at the left of the screen to turn on the measurement menu of the 24
parameters and then press the corresponding menu softkey to quickly realize
“One-key” measurement. The measurement result will be displayed at the bottom of
the screen.
The icons of time and voltage parameters in the measurement items and the
measurement results on the screen are always marked in the same color with the
channel (Measure  Source) currently used. But the delay and phase
measurement items are always marked in green. For example,
Parameter Icons:
Measurement Results:
Note: if the measurement result is displayed as “*****”, it means that there is no
signal input in the current source or the measurement result is not within the valid
range (too large or too small).
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6 To Make Measurements
Time Parameters
RiseTime
FallTime
90%
+Width
-Width
50%
10%
Period
1.
2.
3.
4.
5.
6.
7.
8.
6-16
Period: defined as the time between the middle threshold points of two
consecutive, like-polarity edges.
Frequency: defined as the reciprocal of period.
Rise Time: the time for the signal amplitude to rise from 10% to 90%.
Fall Time: the time for the signal amplitude to fall from 90% to 10%.
+ Width: the time difference between the 50% threshold of a rising edge to the
50% threshold of the next falling edge of the pulse.
- Width: the time difference between the 50% threshold of a falling edge to the
50% threshold of the next rising edge of the pulse.
+ Duty: the ratio of the positive pulse width to the period.
- Duty: the ratio of the negative pulse width to the period.
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6 To Make Measurements
Delay and Phase
Period
Source A
Delay
Source B
Source A and source B can be CH1 or CH2.
1.
Delay A→B : the time difference between the rising edges of source A and
2.
source B. Negative delay indicates that the selected rising edge of source A
occurred after the selected edge of source B.
Delay A→B : the time difference between the falling edges of source A and
3.
source B. Negative delay indicates that the selected edge of source A occurred
after the selected edge of source B.
Phase A→B : phase difference calculated according to “Delay A→B ” and the
4.
period of source A, expressed in degree.
Phase A→B : phase difference calculated according to “Delay A→B ” and the
period of source A, expressed in degree.
Phase =
Delay
× 360°
The Period of Source A
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Voltage Parameters
Overshoot
Vmax
Vtop
Vamp
Vpp
Vbase
Vmin
Preshoot
1.
2.
3.
4.
5.
6.
7.
Vmax: the voltage value from the highest point of the waveform to the GND.
Vmin: the voltage value from the lowest point of the waveform to the GND.
Vpp: the voltage value from the highest point to the lowest point of the
waveform.
Vtop: the voltage value from the flat top of the waveform to the GND.
Vbase: the voltage value from the flat base of the waveform to the GND.
Vamp: the voltage value from the top of the waveform to the base of the
waveform.
Vavg: the arithmetic average value on the whole waveform or on the gating
area.
∑x
Average =
8.
n , wherein, x i is the ith point being measured, n is the number
of points being measured.
Vrms: the root mean square value on the whole waveform or the gating area.
n
RMS =
9.
6-18
i
∑x
i =1
n
2
i
, where, x i is the ith point being measured, n is the number of
points being measured.
Overshoot: the ratio of the difference of the maximum value and top value of
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the waveform to the amplitude value.
10. Preshoot: the ratio of the difference of the minimum value and base value of
the waveform to the amplitude value.
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6 To Make Measurements
Other Parameters
1.
Area: the area of the whole waveform within the screen and the unit is
voltage-second. The area meadured above the zero reference (namely the
vertical offset) is positive and the area measured below the zero reference is
negative. The area measured is the algebraic sum of the area of the whole
waveform within the screen.
2.
Period Area: the area of the first period of waveform on the screen and
the unit is voltage-second. The area above the zero reference (namely the
vertical offset) is positive and the area below the zero reference is negative. The
area measured is the algeraic sum of the area of the whole period waveform.
Note that when the waveform on the screen is less than a period, the period
area measured is 0.
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Frequency Counter Measurement
The hardware frequency counter supplied with this oscilloscope can make more
precise measurement of the input signal frequency.
Press Measure  Counter to select CH1 or CH2 as the measurement source. The
measurement result is displayed at the upper right corner of the screen and you can
identify the current measurement source according to the color of the icon. The
following figure is the result of frequency measurement of the input signal of CH1.
Select “OFF” to disable the frequency counter measurement function.
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6 To Make Measurements
Measurement Setting
1.
Source Selection
Press Measure  Source to select the desired channel for measurement (CH1,
CH2 or MATH). The color of the parameter icons under MENU at the left of the
screen will change with the source selected.
2.
Measurement Range
Press Measure  Meas.Range  Meas.Range to select “Screen Region” or
“Cursor Region” for measurement. When “Cursor Region” is selected, two cursor
lines appear on the screen. At this point, press CursorA and CursorB and use
to adjust the position of the two cursor lines respectively so as to determine
the measurement range. Or, press CursorAB and use
to adjust the
positions of cursor A and cursor B at the same time. Note that you can press
continuously to switch between the cursors.
3.
Delayed Measurement Setting
Specify the source A and source B in the measurement items “Delay A→B ”
and “Delay A→B ”.
Press Measure  Meas.Setting  Type  “Delay” and then press SourceA
and SourceB to set the two channel sources (CH1 or CH2) of delayed
measurement respectively.
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4.
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Phase Measurement Setting
Specify the source A and source B in the measurement items “Phase A→B ”
and “Phase A→B ”.
Press Measure  Meas.Setting  Type  “Phase” and then press SourceA
and SourceB to set the two channel sources (CH1 or CH2) of phase
measurement respectively.
5.
Threshold Measurement Setting
Specify the vertical level (in percentage) being measured in the analog channel.
Measurements of all the time, delay and phase parameters will be influenced by
this setting.
Press Measure  Meas.Setting  Type  “Threshold” and then:
 Press Max and use
to set the maximum value of the measurement.
Reducing the maximum value to the current “Mid” will automatically reduce
the “Mid” to keep it lower than the maximum value. The default is 90% and
the range available is from 7% to 95%.
 Press Mid and use
to set the middle value of measurement. The middle
value is limited by the settings of “Max” and “Min”. The default is 50% and
the range available is from 6% to 94%.
 Press Min and use
to set the minimum value of the measurement.
Increasing the minimum value to the current “Mid” will automatically
increase the “Mid” to keep it higher than the minimum value. The default is
10% and the range available is from 5% to 93%.
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To Clear the Measurement
If you have currently enabled one or more items in the 24 measurement parameters,
you can “Delete” or “Recover” the first five parameters or “Delete” or “Recover” all
the measurement items enabled. Note that the first five parameters are determined
according to the order in which you turned them on and they will not change as you
delete one or more measurement items.
Press Measure  Clear  Item n to “Delete” or “Recover” the specified
measurement item. When one measurement item is deleted or recovered, the
measurement result at the bottom of the screen will move one-item left or right.
Press Measure  Clear  All Items to “Delete” or “Recover” all the measurement
items enabled.
Note: press and hold Measure to quickly clear or restore all the measurement items
enabled.
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All Measurement
All measurement could measure all the time and voltage parameters (each
measurement source has 20 items, measurements can be performed on CH1, CH2
and MATH at the same time) of the current measurement source and display the
results on the screen. Press Measure  Display All to enable or disable the all
measurement function. Press All Measure Source and use
to select the
channel(s) to be measured (CH1, CH2 and MATH).


When all measurement is enabled, “One-key” measurement is also valid.
“To Clear the Measurement” will not clear the results of all measurement.
All Measurement
One-key
Measurement
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Statistic Function
Make statistic and display the current, average, minimum (or standard deviation) and
maximum (or count) values of at most 5 measurement items that are turned on last.
Press Measure  Statistic to turn the statistic function on or off. When the
statistic function is enabled, press StatisSel to select “Extremum” or “Difference”
measurement. When “Extremum” is selected, minimum and maximum values are
displayed. When “Difference” is selected, standard deviation and count values are
displayed.
Extremum Measurement
Difference Measurement
Press Measure  Reset Statistic to clear the history data and make statistic
again.
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Measurement History
To view the history measurement data, press Measure MeasHistory 
MeasHistory  “ON”. The history data can be displayed in two modes:
 Graph: display the results of multiple measurements of at most 5 measurement
items that are turned on last in graph mode. The measurement points are
connected using linear interpolation.
 Table: display the results of the last 10 measurements of at most 5
measurement items that are turned on last in table mode.
Measurement History (Graph):
Measurement History (Table):
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Cursor Measurement
Cursors are the horizontal and vertical marks that can be used to measure the X axis
values (usually Time) and Y axis values (usually Voltage) on a selected waveform.
Please connect the signal to the oscilloscope and obtain stable display before using
cursor measurement. All the “Auto Measurement” parameters can be measured
through cursor measurement.
Press Cousor  Mode at the front panel and use
to select the desired cursor
mode (the default is “OFF”) and then press down the knob. The modes available are
“Manual”, “Track” and “Auto”.
Cursor
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6 To Make Measurements
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Manual Mode
In this mode, a pair of cursors will appear. You can adjust the cursors manually to
measure the X (or Y), X increment (or Y increment) between cursors and the
reciprocal of X increment on the waveform of the selected source (CH1, CH2 or
MATH).
Press Cousor  Mode  “Manual” to turn the manual cursor function on and the
measurement results will be displayed at the upper left corner of the screen in the
following mode.




The X or Y value at cursor A (CurA): X value takes the trigger position as
reference and Y value takes the channel GND as reference.
The X or Y value at cursor B (CurB): X value takes the trigger position as
reference and Y value takes the channel GND as reference.
The horizontal or vertical difference between cursor A and B (△X or △Y).
The reciprocal of the horizontal difference between cursor A and B (1/△X).
If needed, please refer to the following steps to modify the parameters of manual
cursor measurement.
1.
Select Cursor Type
Press Type to select “Time” or “Voltage”. The time cursors are a pair of vertical
dotted lines and are usually used to measure time parameters. The voltage
cursors are a pair of horizontal dotted lines and are usually used to measure
voltage parameters.
2.
Select Measurement Source
Press Source to select the waveform of the analog channels (CH1 or CH2) or
math operation results (MATH) for measurement. If “None” is selected, no
cursor will be displayed.
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3.
6 To Make Measurements
Select X (Y) Axis Unit
When the cursor type is “Time”, press Time Unit to select “s”, “Hz”, “°” or “%”.
 s: when this unit is selected, in the measurement results, CurA, CurB and
△X are in “s” and 1/△X is in “Hz”.
 Hz: when this unit is selected, in the measurement results, CurA, CurB and
△X are in “Hz” and 1/△X is in “s”.
 °: when this unit is selected, in the measurement results, CurA, CurB and
△X are in “°”. At this point, CurA, CurB and △X will change to “0°”, “360°”
and “360°” respectively when you press Set Cursor, no matter where
cursor A and B are currently located. At the same time, two cursor lines
(unmovable) appear on the screen as the reference positions.
 %: when this unit is selected, in the measurement results, CurA, CurB and
△X are in “%”. At this point, CurA, CurB and △X will change to “0%”,
“100%” and “100%” respectively when you press Set Cursor, no matter
where cursor A and B are currently located. At the same time, two cursor
lines (unmovable) appear on the screen as the reference positions.
When the cursor type is “Voltage”, press Vertical Unit to select “Source Unit” or
“%”.
 Source Unit: when this unit is selected, in the measurement results, the
units of CurA, CurB and △Y will be automatically set to the unit of the
current source.
 %: when this unit is selected, in the measurement results, CurA, CurB and
△X are in “%”. At this point, CurA, CurB and △X will change to “0%”,
“100%” and “100%” when you press Set Cursor, no matter where cursor
A and B are currently located. At the same time, two cursor lines
(unmovable) appear on the screen as the reference positions.
4.
6-30
Adjust the Cursor Position (note that under the same menu page, you
continuously to switch the current cursor)
can also press
 Adjust cursor A: press CursorA and use
to adjust the position of cursor
A. During the adjustment, the measurement result will change accordingly.
The adjustable range is limited within the screen.
 Adjust cursor B: press CursorB and use
to adjust the position of cursor
B. During the adjustment, the measurement result will change accordingly.
The adjustable range is limited within the screen.
 Adjust cursor A and B at the same time: press CursorAB and use
to
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6 To Make Measurements
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adjust the position of cursor A and B at the same time. During the
adjustment, the measurement results will change accordingly. The
adjustable range is limited within the screen.
5.
Measurement Example
Use manual cursor measurement to measure the period (△X) of a square
waveform and the result is 1 ms equaling the result from auto measurement.
Cursor
Measurement
Auto
Measurement
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6 To Make Measurements
Track Mode
In this mode, one or two pairs of cursors will appear. You can adjust the two pairs of
cursors (cursor A and cursor B) to measure the X and Y values on two different
sources respectively. The points being measured on cursor A and B are marked by an
orange rectangle and rhombus respectively. When the cursors are moved horizontally,
the marks will position on the waveform automatically. When the waveform is
expanded or compressed horizontally, the marks will track the points being marked
at the last adjustment of the cursors.
Press Cursor  Mode  “Track” to turn on the cursor track function and the
measurement results will be displayed at the upper left corner of the screen in the
following mode.







6-32
The X value at cursor A (A->X): take the trigger position as reference and “s” or
“Hz” (when measuring FFT waveform) as its unit.
The Y value at cursor A (A->Y): take the channel GND as reference and use the
same unit as the current source.
The X value at cursor B (B->X): take the trigger position as reference and “s” or
“Hz” (when measuring FFT waveform) as its unit.
The Y value at cursor B (B->Y): take the channel GND as reference and use the
same unit as the current source.
The horizontal difference between cursor A and B (△X).
The reciprocal of the horizontal difference between cursor A and B (1/△X).
The vertical difference between cursor A and B (△Y).
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If needed, please refer to the following steps to modify manual cursor track
measurement parameters.
1.
Select Measurement Source
Press Cursor A to select the waveform of analog channels (CH1 or CH2) or
math operation results (MATH) as the measurement source of cursor A (only
channels enabled are available). You can also select “None”, namely do not use
cursor A.
Press Cursor B to select the waveform of analog channels (CH1 or CH2) or
math operation results (MATH) as the measurement source of cursor B (only
channels enabled are available). You can also select “None”, namely do not use
cursor B.
2.
Adjust Cursor Position (note that under the same menu page, you can
continuously to switch the current cursor)
also press
 Adjust cursor A: press CursorA and use
to adjust the position of cursor
A. During the adjustment, the measurement result will change accordingly.
The adjustable range is limited within the screen.
 Adjust cursor B: press CursorB and use
to adjust the position of cursor
B. During the adjustment, the measurement result will change accordingly.
The adjustable range is limited within the screen.
 Adjust cursor A and B at the same time: press CursorAB and use
to
adjust the position of cursor A and B at the same time. During the
adjustment, the measurement results will change accordingly. The
adjustable range is limited within the screen.
Note: the vertical cursor will track the marked point (namely jumps up and down
with the transient change of the waveform). Thus, the Y value might change
even though you do not adjust the cursor.
3.
Measurement Example
Use cursor A and B to measure the waveforms of CH1 and CH2 respectively. You
would discover that the cursors would track the marked points when the
waveforms are expanded or compressed horizontally.
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6 To Make Measurements
Cursor Track (Before Horizontal Expansion):
Cursor Track (After Horizontal Expansion):
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Auto Mode
In this mode, one or more cursors will appear. You can use auto cursor measurement
to measure any of the 24 waveform parameters. Before using this mode, you need to
at least enable one auto measurement parameter and the number of cursors will
change with the measurement parameter enabled.
Press Cursor  Mode  “Auto” and the number of cursors displayed on the screen
is determined by the measurement parameter enabled (different measurement
parameter needs different number of cursors). Note that no cursor will be displayed
if no auto cursor measurement parameter is enabled or the measurement source has
no input. When the waveform is expanded or compressed horizontally, the cursor will
move accordingly.
If multiple measurement parameters are turned on later, you can use Meas.Para. to
switch among at most five measurement parameters that are turned on last and the
measurement parameter currently selected is high-lighted at the bottom of the
screen.
The following figure shows the auto measurement of the delay between two
channels.
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7 Protocol Decoding
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7 Protocol Decoding
Protocol analysis can be used by users to discover errors, debug hardware and
accelerate development easily, so as to guarantee quick and high-quality
accomplishment of projects. Protocol decoding is the basis of protocol analysis. Only
protocol analyses with correct protocol decoding are acceptable and only correct
protocol decoding can provide more error information. DS2000 provides two buses to
make common protocol decoding (including Parallel (standard), RS232 (option), I2C
(option) and SPI (option)) of the analog channels (CH1 or CH2). As the decoding
functions and setting methods of the two buses are the same, this chapter only takes
Decode1 for illustration.
To get the decoding option information, please refer to “Appendix A: Accessories
and Options” on page 17-1.
When you have ordered the decoding option, please refer to “Option
Management” on page 13-13 to activate corresponding option.
The contents of this chapter:




Parallel Decoding
RS232 Decoding (Option)
I2C Decoding (Option)
SPI Decoding (Option)
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7 Protocol Decoding
Parallel Decoding
Parallel bus consists of clock line and data line. As shown in the figure below, CLK is
the clock line, while Bit0 and Bit1 are the 0 bit and 1st bit on the data line
respectively.
CLK
Bit0
Bit1
The oscilloscope will sample the channel data on the rising edge, falling edge or the
rising&falling edges of the clock and judge each data point (logic “1” or logic “0”)
according to the preset threshold level.
Press Decode1  Decode to select “Parallel” and open the parallel decoding
function menu.
1.
Clock Line Setting (CLK)
Press CLKChannel to select any channel (CH1 or CH2) as the clock channel. If
“None” is selected, no clock channel is set.
Press Slope to set the oscilloscope to sample the channel data on the rising
edge (
), falling edge (
) or rising&falling edges (
). If no clock
channel is selected, the instrument will sample when the channel data jumps in
the decoding.
2.
Data Line Setting
 Set the bus bits
Press Bus Bits to set the data width of the parallel bus namely the number
of bits per frame. The default is 1 and the maximum is 20 bits (Bit0,
Bit1…Bit19).

7-2
Specify data channel for each bit.
First, press CurrentBit to select the bit that needs to specify channel. The
default is 0 and the range available is always 1 smaller than the bus bits. For
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7 Protocol Decoding
example, when the bus bits is 20, the range available is 0, 1…19.
Next, press Channel to specify a channel source for the bit currently
selected in CurrentBit.
3.
Analog Channel Threshold Setting
To judge logic “1” and logic “0” of the buses, you need to set a threshold for
each analog channel (CH1 and CH2). When the signal amplitude is greater than
the preset value, it is considered as “1”; otherwise “0”.
Threshold
Level
1
0
0
Press Threshold to turn the threshold setting menu on.
Channel
Select the channel (CH1 or CH2) that needs to set a
threshold.
TTL
Press this softkey to set the threshold of the specified channel
to TTL level immediately.
CMOS
Press this softkey to set the threshold of the specified channel
to CMOS level immediately.
ECL
Press this softkey to set the threshold of the specified channel
to ECL level immediately.
Threshold
Press this softkey and use
default is 0 V.
to set the threshold. The
Note: when the threshold selected is beyond the specified range, it will be
automatically limited within the range.
4.
Display-related Setting
Press Format to set the display format of the bus to Hex, Decimal, Binary or
ASCII.
Press Offset and use
to adjust the vertical display position of the bus.
Press BusStatus to turn the bus display on or off.
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5.
7 Protocol Decoding
Decoding Table
The decoding table displays the decoded data and the corresponding line
number and time in table format. It can be used to observe relatively longer
decoded data to solve the problem that some data could not be seen clearly on
the screen.
Press Event Table  Event Table to select “ON” (note that this operation is
only available when BusStatus is set to “ON”) to enter the decoding table
interface as shown in the figure below. The decoding table lists the decoded
data in time order. If an USB storage device is currently connected to the
instrument, press Export to export the data table to the external USB storage
device in CSV format.
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7 Protocol Decoding
RS232 Decoding (Option)
RS232 serial bus consists of the transmitting data line (TX) and the receiving data
line (RX).
Rx
Tx
DeviceB
DeviceA
Tx
Rx
The industry standard of RS232 uses “Negative Logic”, namely high level is logic “0”
and low level is logic “1”.
0
1
0
0
1 1
1
0
1
1
By default, RS232 uses LSB (Least Significant Bit) transmission sequence, namely
the lowest bit of the data is transmitted first. While for MSB (Most Significant Bit),
the highest bit of the data is transmitted first.
Endian (MSB)
Bit0
Endian (LSB)
Bit1
t
Bit2
Bit3
Bit4
Bit5
Bit6
Bit7
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
t
In RS232, baud rate is used to represent the transmitting rate (namely bits per
second) of the data. The commonly used baud rates include 2400 bps, 4800 bps,
9600 bps, 19200 bps, 38400 bps, 57600 bps and 115200 bps.
In RS232, you need to set the start bit, data bits, check bit (optional) and stop bit of
each frame of data.
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7 Protocol Decoding
Stop Bit
Check Bit
Start Bit
Data Bit
Start Bit: represent when the data starts outputting. Setting the Polarity is
equivalent to specifying the “Start Bit”.
Data Bits: represent the number of data bits actually contained in each frame of
data.
Check Bit: used to check the correctness of the data transmission.
 Odd Checkout: the number of “1” in the data bit and check bit is an odd. For
example, when 0x55 (01010101) is sent, a 1 needs to be filled in the check bit to
make the number of 1 be an odd.
 Even Checkout: the number of “1” in the data bit and check bit is an even. For
example, when 0x55 (01010101) is sent, a 0 should be filled in the check bit.
 None: there would not be check bit during the transmission.
Press Decode1  Decode to select “RS232” to open the RS232 decoding function
menu.
1.
TX and RX Channel Setting
Press TX to select any channel (CH1 or CH2) as the transmitting channel and
when “OFF” is selected, no transmitting channel is set. Use the same method
the set the RX channel. What’s more, you need to set the thresholds of the input
channels of TX and RX. Switch the menu page and press TXThreshold and
RXThreshold respectively to input the desired threshold values.
2.
Polarity Setting
Press Polarity to select “Normal” or “Invert” and the default is normal. The
oscilloscope will select the rising or falling edge as the start position during
decoding.
3.
Endian Setting
Press Endian to select “LSB” or “MSB” and the default is “LSB”.
4.
Baud Rate Setting
Press Baud to select the desired baud rate and the default is 9600 bps.
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5.
Data Packet Setting
As mentioned before, in RS232, you need to set the start bit, data bits, check bit
(optional) and stop bit of each frame of data. “Start Bit” is specified by the
“Polarity Setting”. The setting methods of other parameters are as follows.
 Press Data Bits to set the data width of each frame. It can be set to 5, 6, 7,
8 or 9 and the default is 8.
 Press Stop Bit to set the stop bit after each frame of data. It can be set to
1 bit, 1.5 bits or 2 bits.
 Press Even-OddCheck to set the even-odd check mode of the data
transmission. It can be set to None, Odd Checkout or Even Checkout.
 Press Packet to enable or disable the packet end. When packet end is
enabled, several data blocks are combined according to the packet end.
 Press PacketEnd to set the packet end during data transmission and it can
be set to 00 (NULL), 0A (LF), 0D (CR), 20 (SP) or FF.
6.
Display-related Setting
Press Format to set the display format of the bus to Hex, Decimal, Binary or
ASCII.
Press Offset and use
to adjust the vertical display position of the bus.
Press BusStatus to turn the bus display on or off.
7.
Decoding Table
The decoding table displays the decoded data, the corresponding line number,
time and error information on TX and RX data lines in table format. It can be
used to observe relatively longer decoded data to solve the problem that some
data could not be seen clearly on the screen. Note that when the RX channel is
turned off, the information of this data line will not be displayed in the decoding
table.
Press Event Table  Event Table to select “ON” (note that this operation is
only available when BusStatus is set to “ON”) to enter the decoding table
interface as shown in the figure below. The decoding table lists the decoded
data in time order. If error occurs during the decoding, the corresponding error
information is displayed. If a USB storage device is currently connected to the
instrument, press Export to export the data table to the external USB storage
device in CSV format.
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8.
7 Protocol Decoding
The Error Expression during Decoding
DS2000 makes full use of the resources such as color and view to express the
results of the protocol decoding effectively so as to let users find the desired
information quickly.
End Frame Error:
Errors generated when the end frame condition is not met. When the stop bit is
set to 1.5, red error mark (note that the red mark is displayed in different modes
according to the horizontal time base setting; when the horizontal time base is
relatively smaller,
is displayed; otherwise,
is displayed) will be displayed if
the stop bit is less than 1.5.
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Check Error:
When check bit error is detected during the decoding, red error mark will be
displayed. For example, when the transmitting terminal is set to none check and
the decoder is set to odd check, the following check error occurs.
(00000100, LSB)
The check bit detected is 1
Wherein, there are odd number (1) of 1 in the 8-bit data 00000100 and the
check bit should be 0; but the check bit detected on the TX is 1, thus check error
occurs.
After the decoder is set to none check, the decoding becomes normal.
Note that two error marks will be displayed when end frame error and check
error are detected at the same time.
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7 Protocol Decoding
I2C Decoding (Option)
I2C serial bus consists of the clock line (SCLK) and the data line (SDA).
Vcc
A2
SCLK
SDA
Device
A1
A0
Host
SCLK
SDA
SCLK: sample the SDA on the clock rising edge or falling edge.
SDA: denote the data channel.
Press Decode1  Decode to select “I2C” and open the I2C decoding function
menu.
1.
SCLK Setting
Press SCLK to select any channel (CH1 or CH2) as the clock channel.
Press SCLKThreshold to set the threshold of the clock channel.
2.
SDA Setting
Press SDA to select any channel (CH1 or CH2) as the data channel.
Press SDAThreshold to set the threshold of the data channel.
3.
Display-related Setting
Press Format to set the display format of the bus to Hex, Decimal, Binary or
ASCII.
Press Offset and use
to adjust the vertical display position of the bus.
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Press BusStatus to turn the bus display on or off.
4.
Decoding Table
The decoding table displays the decoded data, the corresponding line number,
time, data direction, ID and ACK information in table format.
Press Event Table  Event Table to select “ON” (note that this operation is
only available when BusStatus is set to “ON”) to enter the decoding table
interface as shown in the figure below. If a USB storage device is currently
connected to the instrument, you can export the data table to the external USB
storage device in CSV format.
5.
Error Expressions during Decoding
In I2C bus, the front part of each frame of data contains the address information
and blue patches are used to represent address ID. In the ID, “Write” is used to
represent writing address and “Read” is used to represent reading address.
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7 Protocol Decoding
When the ACK (ACKnowledge Character) is not met, the red error marks as
shown in the figure below will be displayed.
ACK=1
7-12
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7 Protocol Decoding
SPI Decoding (Option)
SPI serial bus consists of clock line (SCLK) and data line (SDA).
Host
SDA
Device
SDA
SCLK
SCLK
SCLK
SDA
SCLK: sample the SDA on the clock rising edge or falling edge.
SDA: denote the data channel.
Press Decode1  Decode to select “SPI” and open the SPI decoding function
menu.
1.
SCLK Setting
Press SCLK to enter the clock line setting interface.
 Press Channel to select any channel (CH1 or CH2) as the clock channel.
 Press Slope to set to sample the SDA on the rising or falling edge of the
SCLK.
 Press Threshold to set the threshold of the clock channel.
2.
SDA Setting
Press SDA to enter the SDA data line setting interface.
 Press Channel to select any channel (CH1 or CH2) as the data channel. If
“OFF” is seelcted, this data line will not be set.
 Press Polarity to set the polarity of the SDA data line to high or low.
 Press Threshold to set the threshold of the data channel.
3.
Data Bits Setting
Press Data Bits to set the number of bits of each frame of data. The range
available is from 4 to 32.
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7 Protocol Decoding
4.
Endian Setting
Press Endian to select “LSB” or “MSB” and the default is “MSB”.
5.
Display-related Setting
Press Format to set the display format of the bus to Hex, Decimal, Binary or
ASCII.
Press Offset and use
to adjust the vertical display position of the bus.
Press BusStatus to turn the bus display on or off.
6.
Decoding Table
The decoding table displays the decoded data, the corresponding line number,
time and error information on the data line in table format. It can be used to
observe relatively longer decoded data to solve the problem that some data
could not be seen clearly on the screen.
Press Event Table  Event Table to select “ON” (note that this operation is
only available when BusStatus is set to “ON”) to enter the decoding table
interface as shown in the figure below. If a USB storage device is currently
connected to the instrument, press Export to export the data table to the
external USB storage device in CSV format.
7.
7-14
Error Expressions during Decoding
When the clock for a frame in SPI is nout enough, the data is filled with red
patches. For example, when Data Bits is set to 7 and SCLK slope is set to rising
edge, decoding error will be generated.
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7 Protocol Decoding
Not
enough
for 7 bits
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8 Reference Waveform
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8 Reference Waveform
In actual testing process, the waveform being tested can be compared with the
reference waveform to judge the causes of failures.
The contents of this chapter:







To
To
To
To
To
To
To
Enable REF Function
Set the Color
Select REF Source
Save to Internal Memory
Adjust REF Waveform Display
Export to Internal or External Memory
Import from Internal or External Memory
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8 Reference Waveform
To Enable REF Function
Press REF in the vertical control area (VERTICAL) at the front panel to enable the
REF function. Note that when the time base is in X-Y mode, REF function can not be
enabled.
REF
DS2000 provides 10 reference waveform channels. Press Channel and use
to
)
set the desired reference channel to on or off and a channel icon (for example,
of the channel enabled will be display at the left side of the screen grid.
When the REF function is enabled, you can select different color for each reference
waveform, set the source of each reference channel, adjust the vertical scale and
position of the reference waveform and save the reference waveform to internal or
external memory as well as recall it when needed. For details, please refer to the
introductions below.
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8 Reference Waveform
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To Set the Color
DS2000 series oscilloscope provides five colors (gray, green, light blue, magenta and
orange) to mark the reference waveforms of different channels in order to distinguish
them.
Press Current and use
to select any of the reference channels (Ref1-Ref10)
enabled. Then, press Color to specify a different color for the reference waveform of
that channel. The corresponding icon at the left of the channel currently selected will
.
be filled with the specified color, for example,
To Select REF Source
Press Current and use
to select any of the reference channels (Ref1 to Ref10)
enabled and then press Source to specify a reference source (CH1, CH2 or MATH)
for this channel.
To Save to Internal Memory
Press Save to save the waveform (screen region) in the specified source to internal
memory as reference waveform and display it on the screen. Note that this operation
only saves the reference waveform in the volatile memory and the waveform will be
cleared at power-off.
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8 Reference Waveform
To Adjust REF Waveform Display
To adjust the reference waveform specified in Current:
Press REF to enable the REF function. Then, press
vertical position of the reference waveform and press
vertical scale of the reference waveform.
and use
to adjust the
and use
to adjust the
Press Reset and the reference waveform returns to the position where the source
channel waveform is located when the Save operation was executed.
To Export to Internal or External Memory
Users can also save the reference waveform to the internal Flash memory or external
USB storage device. The file format of the reference waveform is “*.ref”. At most 10
reference files (LocalREF0.ref to LocalREF9.ref) can be saved inside the instrument.
Press Export to enter the file store interface. Please refer to the relative descriptions
in “Store and Recall” to save the reference waveform to internal or external
memory.
To Import from Internal or External Memory
Users can also import the reference waveform stored in the internal Flash memory or
external USB storage device to the internal memory.
Press Import to enter the file recall interface. Please refer to the relative
descriptions in “Store and Recall” to import the reference waveform to the internal
memory of the instrument.
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9 Pass/Fail Test
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9 Pass/Fail Test
Monitor the change of the signal by judging whether the input signal is within the
mask created. The test results can be displayed on the screen as well as be declared
through the system sound or the pulse signal output from the [Trigger Out]
connector at the rear panel.
The contents of this chapter:






To Enable Pass/Fail Test
To Select Source
Mask Range
Test and Ouput
To Save the Test Mask
To Load the Test Mask
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9 Pass/Fail Test
To Enable Pass/Fail Test
Press Utility  Pass/Fail  Enable Test to select “ON”. Note that when the time
base is in X-Y mode, the Pass/Fail test function can not be enabled.
Utility
To start testing, press Enable Test and select “ON”. Then, press Operate to select
“ ” to start testing and select “■” to stop testing.
You can select the signal source, set the test mask range, create mask as well as
save and load the test mask. For details, please refer to the following introductions.
To Select Source
Press Source to select the channel (CH1 or CH2) to be tested and only channels
enabled can be selected. During the test, the oscilloscope will judge whether each
frame of waveform in the source complies with the current test mask and those
waveforms pass through the mask area (blue area) is considered as failed.
Mask Range
Users can define their desired test masks.
Press MaskRange  MaskRange to select “Screen Region” or “Cursor Region” for
test. When “Cursor Region” is selected, two gray cursor lines appear on the screen.
At this point, press Cursor A and Cursor B; then, use
to adjust the positions of
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the two cursor lines respectively. Or, press CursorAB and use
to adjust the
positions of cursor A and curcor B at the same time. Note that you can press down
continuously to switch the current cursor.
Press X Mask and Y Mask, rotate
and the mask lines appear on the screen as
shown in the figure below. Press Create Mask to apply the mask currently created.
The horizontal and vertical adjustment ranges are 0.02 div to 4.0 div and 0.03 div to
4.0 div respectively.
Test and Ouput
Before the test, you can use the following method to set the output mode of the test
results.
Press Msg Display to select “ON” or “OFF”. When “ON” is selected, the test results
will be displayed at the upper right corner of the screen.
Press Stop On Outp to select “ON” or “OFF”.
 ON: when failed waveforms are detected, the oscilloscope will stop the test and
enter the “STOP” state. At this point, the results of the test remain the same on
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
9 Pass/Fail Test
the screen (if display is turned on) and only one pulse is output from the
[Trigger Out] connector (if enabled) at the rear panel.
OFF: the oscilloscope will continue with the test even though failed waveforms
are detected. The test results on the screen will update continuously and a pulse
will be output from the [Trigger Out] connector at the rear panel each time a
failed waveform is detected.
Press Output to select “Fail” or “Fail+
”.

Fail: when failed waveforms are detected, there are display and output but the
beeper does not sound.

Fail+
: when failed waveforms are detected, there are display and output and
the beeper sounds (not related to the on/off state of the sound).
Press AuxOutput to quickly turn “ON” or “OFF” the output of test results from the
[Trigger Out] connector at the rear panel. You can also press Utility 
AuxOutput and select “PassFail” to set this output.
To Save the Test Mask
Users can save the current test mask to the internal Flash memory or external USB
storage device. The file format of the test mask file is “*.pf”. The internal memory
can store at most 10 test mask files (LocalPF.pf).
Press Save to enter the file store interface. Please refer to the relative descriptions in
“Store and Recall” to save the test mask file to the internal or external memory.
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To Load the Test Mask
Users can also load the test mask files (*.pf) stored in the internal Flash memory or
external USB storage device to the internal memory.
Press Load to enter the file recall interface. Please refer to the relative descriptions
in “Store and Recall” to load the test masks to the internal memory of the
instrument.
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10 Waveform Record
Waveform record can record the waveforms of the input channels (CH1 and CH2). In
record constant on (open) mode, the oscilloscope can record the input waveform
contimuously until users press RUN/STOP. Waveform playback and analysis can
provide better waveform analysis effect. (Note: the horizontal time base must be set
to Y-T mode during waveform record.)
The contents of this chapter:




Waveform Record
Record Constant On
Waveform Playback
Waveform Analysis
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10 Waveform Record
Waveform Record
Waveforms from both the channels currently turned on will be recorded during
waveform record.
Utility
Navigation Knob (Playback)
Waveform Record
Play/Pause (Playback)
Stop Recording
(Playback)/OFF
Press Utility  Record  Mode and use
waveform record operation menu.
to select “Record” to open the
1.
End Frame
Press End Frame and use
to set the desired number of frames to be
recorded. The number of frames available is related to the memory depth
currently selected.
2.
Record Operation
Waveform recod can be realized via the menu or the shortcut buttons at the
front panel.
Menu
Press Operate and select
“●” to start recoding.
When the record is
finished, “●” changes to
“■” automatically. You
can also select “■”
manually.
10-2
Front Panel
Press
; the backlight goes on (in red) and
starts to flash, indicating that the record is
started.
When the recod is finished,
automatically and
can also press
goes off
goes on (in orange). You
directly.
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10 Waveform Record
3.
Interval
Set the time interval between the frames in waveform record and the range
available is from 100 ns to 10 s.
4.
Total Frames
The menu shows the maximum number of frames that can be recorded
currently.
As the capacity of the waveform memory is fixed, the more the number of points
each frame of waveform has, the less the number of waveform frames can be
recorded. Thus, the maximum end frame of waveform record is decided by the
“Memory Depth” currently selected. Please refer to the instruction in “Memory
Depth” to select the desired memory depth.
Table 10-1 Memory Depth and Total Frames
Memory Depth
Maximum End Frame
Auto
65000
14 k points
8128
140 k points
508
1.4M points
63
14M points
7
56M points
2
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10 Waveform Record
Record Constant On
DS2000 provides record “Open” (record constant on) mode for waveform record.
When this mode is enabled, the oscilloscope records the waveform continuously
according to the current memory depth. The length of waveform recorded is limited
by the memory depth and the waveform data recorded before will be overwritten by
the waveform currently recorded. In this mode, the other oscilloscope operations
(except “Pass/Fail Test” as well as “Acquisition Mode”, “Sample Mode”,
“Sample Rate” and “Memory Depth” in the sample system setting and “Time
Base Mode” in the horizontal system setting) are not affected.
Press Utility  Record  Mode and use
waveform record key
to select “Open”. At this point, the
at the front panel turns red and the oscilloscope records
the waveform continuously according to the current memory depth. The oscilloscope
stops recording until users press RUN/STOP and at this point, users can play back
or analyze the waveform.
In constant on mode, the oscilloscope can capture the accidental abnormal signals
during the adjustment. Following is an application example of the record constant on
mode. Use DS2000 (CH1) to observe a pulse which might contain runt pulses.
1.
10-4
Connect the pulse under test to CH1 of the oscilloscope. Adjust the oscilloscope
to make it trigger stably.
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2.
Enable record constant on mode.
3.
Press RUN/STOP to stop the record.
4.
Analyze the waveform recorded using waveform analysis and as shown in the
figure below, the runt pulses are captured.
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10 Waveform Record
Waveform Playback
Waveform playback can play back the waveforms currently recorded. Press Utility
 Record  Mode and use
to select “Play back”. At this point, the information
as shown in the figure below is displayed at the upper right corner of the screen,
indicating the specific frame currently displayed on the screen. During the playback,
this value would change continuously.
Please refer to the following descriptions to set the playback parameters.
1.
Play Mode
Press this softkey to set the playback mode to cycle or single.
: cycle playback. Play from the start frame to the end frame and then

repeat until you stop it manually.

: single playback. Play from the start frame to the end frame and
then stop.
2.
Interval
Press this softkey and use
to set the time interval of playback. The range
availbale is from 100 ns to 10 s and the default is 100 ns.
3.
Start Frame
to set the start frame of playbak. The default is 1
Press this softkey and use
and the maximum is the maximum number of frames recorded.
4.
Current Frame
or the navigation knob (large scale adjustment)
Press this softkey and use
to set the current frame. By default, the current frame is the same with the end
frame. The setting range of current frame is related to the start frame and end
frame settings. During the setting, the screen will display the corresponding
waveform of the current frame synchronously, namely manual playback.
If you perform the playback operation after setting this parameter, this menu will
be adjusted to the Start Frame value automatically and will change
continuously during the playback process.
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5.
End Frame
to set the end frame of the playback. The default
Press this softkey and use
is the total number of frames of the waveform recorded.
6.
Playback Operation
Waveform playback can be realized through the menu or the shortcut buttons
at the front panel.
Menu
Press Operate and select
“
” to start playing back.
Front Panel
Press
; the backlight goes on (in yellow),
indicating that the playback is started.
7.
Press Operate and select
“ ” to pause the playback.
Press
Press Operate and select
“■” to stop the playback.
Press
again to pause the playback.
to stop the playback.
Time Tag
The time tag is used to display the absolute recording time of each frame of the
waveform currently recorded. Press Time Tag to enable or disable the time tag
function. When it is enabled, the time tag information is displayed at the upper
right corner of the screen as shown in the figure below.
T0: display the absolute starting time of the waveform record in
“Hour:Minute:Second Month Date” format.
△T: display the recording time deviation of the current waveform relative to the
first frame of waveform. This value changes accordingly during the waveform
playback process.
Tip
During waveform playback, RUN/STOP can be used to switch between
playback and pause. Each time SINGLE is pressed, the Current Frame
moves one frame forward.
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10 Waveform Record
Waveform Analysis
This function is used to analyze the recorded waveform. Press Utility Record 
Mode and use
to select “Analyze” to open the waveform analysis menu. At this
point, the screen is divided into two display areas as shown in the figure below.
Settings and Results
Templet Display
Current Frame
Please refer to the following explanations to set the waveform analysis parameters.
1.
Analyze
Press Analyze to select the desired analysis mode.
 Trace: perform analysis on the basis of the templet selected by users. For
detailed information, refer to “Analysis Based on Trace”.
 Pass/Fail: perform analysis on the basis of the Pass/Fail mask created by
users. For detailed information, refer to “Analysis Based on Pass/Fail
Mask”.
2.
Source
Press Source to select the channel (CH1 or CH2) to be analyzed. Note that only
channels currently enabled can be selected.
3.
Start
Press Satrt to enable waveform analysis. Note that during the analysis process,
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the progress bar is displayed and the parameters can not be modified. After the
analysis finishes, the analysis results of “Error Frames”, “Current Error” and
“CurFrame Diff” are displayed; at the same time, the first error frame is located
as shown in the figure below. At this point, the next error frame, the previous
error frame as well as every frame in this waveform analysis can be located
using the corresponding softkeys.
Error Frames:
The total number of error frames discovered in this analysis. The number of
error frames is related to the error frame threshold currently set.
Current Error:
The order number of the error frame lately located in all the error frames when
locating every data frame in this analysis.
CurFrame Diff:
During the analysis based on trace, the oscilloscope compares each frame with
the templet to compute the difference value and normalizes each value using
the maximum one; then, compares the normalized value of each frame with the
threshold selected to judge whether the frame is an error frame. “CurFrame
Diff” (relative difference) is the normalized value of the difference between the
current frame and templet.
During the analysis based on pass/fail mask, the oscilloscope compares each
frame with the mask to compute the difference value and recognizes the frame
whose difference value is equal to or larger than the threshold selected as an
error frame and the corresponding “CurFrame Diff” is 100%; otherwise, the
frame is juged as correct and the “CurFrame Diff” is 0%. Note that there are
only two “CurFrame Diff” values (100% and 0%) under the analysis based on
pass/fail mask.
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10 Waveform Record
4.
Cancel
During the analysis, users can press Cancel to stop the analysis and press Start
again to restart the analysis.
5.
Previous
After the waveform analysis finishes, pressing Previous can locate the error
frame previous to the current error frame. Pressing RUN/STOP can also
perform the operation.
6.
Next
After the waveform analysis finishes, pressing Next can locate the error frame
following the current error frame. Pressing SINGLE can also perform the
operation.
7.
Current Frame
Press Current Frame to adjust the data frame currently displayed and the
adjustable range is from 1 to the total number of frames in this waveform
analysis. Using the navigation knob can also perform the operation.
8.
Setup
Press Setup to open the more detailed setting menu.
 Screen Start: press this key to set the start point of waveform analysis and
the range is from 5 to 685. The start point must be less than the “Screen
End - 10” currently set.
 Screen End: press this key to set the end point of waveform analysis and
the range is from 15 to 695. The end point must be greater than the
“Screen Start + 10” currently set.
 Start Frame: press this key to set the start frame of waveform analysis and
the default is the first frame.
 End Frame: press this key to set the end frame of waveform analysis and
the default is the last frame.
 Threshold: press this key to set the threshold of waveform analysis and the
range is from 1% to 99%. The threshold is used to judge whether the frame
is an error frame. A frame is recognize as an error one if the (relative)
difference value between the frame and the templet is equal to or larger
than the threshold currently set.
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Time Tag
The time tag is used to display the absolute recording time of each frame of the
waveform currently recorded. Press Time Tag to enable or disable the time tag
function. When it is enabled, the time tag information is displayed at the upper
right corner of the screen as shown in the figure below.
T0: display the absolute starting time of the waveform record in
“Hour:Minute:Second Month Date” format.
△T: display the recording time deviation of the current waveform relative to the
first frame of waveform.
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10 Waveform Record
Analysis Based on Trace
Press Analyze and select “Trace”. Then, set the templet used in analysis based on
trace through the method below.
1.
Trace
Press Trace to select the creation method of analysis templet.
 Current Frame: select the current frame as the analysis templet.
 Average: select the average of the current data frame as the analysis
templet.
2.
Setup Template
Press Setup Template to configure the template immediately. After the
analysis starts, the oscilloscope compares each frame with the templet and
determines whether error frame exists according to the threshold currently set.
3.
Template Display
Press TemplateDisp to enable or disable template display.
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Analysis Based on Pass/Fail Mask
Press Analyze and select “Pass/Fail”. Then, set the templet used in analysis based
on Pass/Fail mask through the method below.
Press MaskRange to open the following setting menus.
1.
Mask Range
Press this softkey to select “Screen Region” or “Cursor Region” for the analysis
(the default is “Screen Region”). When “Cursor Region” is selected, two gray
cursor lines appear on the screen. At this point, press Cursor A and Cursor B;
to adjust the positions of the two cursor lines respectively to
then, use
determine the analysis range. Or, press CursorAB and use
to adjust the
positions of cursor A and curcor B at the same time. Note that you can press
continuously to switch the current cursor.
down
2.
X Mask
to adjust the horizontal threshold and the range
Press this softkey and use
is from 0.02 div to 4.00 div. During the adjustment, two curves would be
displayed to show the outline of the current mask as shown in the figure below.
Outline of the Current Mask
3.
Y Mask
to adjust the vertical threshold and the range is
Press this softkey and use
from 0.03 div to 4.00 div. During the adjustment, two curves would be displayed
to show the outline of the current mask.
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4.
10 Waveform Record
Create Mask
Mask is the templet used in waveform analysis. Press Create Mask to
immediately apply the mask (X Mask and Y Mask) currently created.
Users can store the current test mask into the internal Flash memory or external USB
storage device or load the test mask file (*.pf) stored in the internal Flash memory or
external USB storage device into the internal memory.
Press Save to enter the file store interface. Store the test mask file to internal or
external memory by referring to the introduction in “Store and Recall”.
Press Load to enter the file recall interface. Load the test mask into the internal
memory of the instrument by referring to the introduction in “Store and Recall”.
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11 Display Control
You can set the type, persistence time and brightness of waveform display as well as
the grid type, grid brightness of the screen display and the menu display time.
The contents of this chapter:






To
To
To
To
To
To
Select the Display Type
Set the Persistence Time
Set the Waveform Intensity
Set the Screen Grid
Set the Grid Brightness
Set the Menu Display
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11 Display Control
To Select the Display Type
Display
Press Display  Type to set the waveform display mode to “Vectors” or “Dots”.


11-2
Vectors: the sample points are connected by lines and displayed. Normally, this
mode can provide the most vivid waveform to view the steep edge of the
waveform (such as square waveform).
Dots: display the sample points directly. You can directly view each sample point
and use the cursor to measure the X and Y values of the sample point.
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To Set the Persistence Time
Press Display  Persis.Time to set the persistence time of the oscilloscope to Min,
specific values (from 50 ms to 20 s) or Infinite.
In the following part, a frequency sweep signal of the sine waveform is used to
demonstrate the waveform effects in different persistence times.
1.
Min
Enable to view waveform changing in high refresh rate.
2.
Specific Values
Enable to observe glitch that changes relatively slowly or glitch with low
occurrence probability. The persistence time can be set to 50 ms, 100 ms, 200
ms, 500 ms, 1 s, 2 s, 5 s, 10 s or 20 s.
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3.
11-4
11 Display Control
Infinite
In this mode, the oscilloscope displays the waveform newly acquired without
clearing the waveforms acquired formerly. The waveforms acquired formerly will
be displayed in relatively low-brightness color and the waveform newly acquired
will be displayed in normal brightness and color. Infinite persistence can be used
to measure noise and jitter and to capture incidental events.
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To Set the Waveform Intensity
Press Display  WaveIntensity or turn
when the menu is hidden to adjust
the waveform brightness of the analog channel. The default is 50% and the range
available is from 0% to 100%.
To Set the Screen Grid
Press Display  Grid to set the screen grid type.



: turn the background grid and coordinate on.
: turn the background grid off.
: turn the background grid and coordinate off.
To Set the Grid Brightness
Press Display  Brightness to set the brightness of the screen grid. Turn
to
adjust the grid brightness. The default is 50% and the range available is from 0% to
100%.
To Set the Menu Display
Press Display  Menu Display to set the menu display time. The menu will hold
for a specified period of time after the last button-pressing action and then is hidden.
The display time can be set to 1 s, 2 s, 5 s, 10 s, 20 s or Infinite (the menu will not be
hidden).
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12 Store and Recall
Users can save the current settings, waveforms, and screen image of the
oscilloscope in internal memory or external USB mass storage device (such as USB
storage device) in various formats and recall the stored settings or waveforms when
needed.
The contents of this chapter:






Storage System
Storage Type
Internal Storage and Recall
External Storage and Recall
Disk Management
Factory
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12 Store and Recall
Storage System
Press Storage to enter the store and recall setting interface.
Storage
Insert the USB storage device
This oscilloscope provides a USB Host interface at the front panel to connect USB
storage device for external storage. The USB storage device connected is marked as
“Disk D”. The internal memory (Local Disk) of the instrument can store 10 setting
files, 10 reference waveform files and 10 mask files of the Pass/Fail test. Below is the
disk selecting interface.
Table 12-1 Probable Icons
Icon
12-2
Description
Icon
Description
Return to the previous disk
management interface
Waveform File
Local Disk Memory
JPEG File
External USB Storage Device
Pass/Fail Mask File
Folder
PNG File
Return to the previous folder.
Waveform Record File
Unknown File
Reference Waveform File
Bitmap File
Setting File
CSV File
Trace File
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Storage Type
Press Storage  Storage to select the desired storage type. The default is “Traces”.
The storage and recall descriptions of each type are as follows.
1.
Traces
Save the waveform data in external memory in “*.trc” format. The data of all the
channels turned on can be saved in the same file. At recall, the data will be
displayed on the screen directly.
2.
Waveforms
Save the waveform data in external memory in “*.wfm” format. The stored files
contain the waveform data of the two analog channels and the main setting
information of the oscilloscope and all the data can be recalled.
3.
Setups
Save the settings of the oscilloscope in internal or external memory in “*.stp”
format. At most 10 setting files (from LocalSetup0.stp to LocalSetup9.stp) can
be stored in internal memory. The stored settings can be recalled.
4.
Picture
Save the screen image in external memory in “*.bmp”, “*.png”, “*.jpeg” or
“*.tiff” format. You can specify the file name and saving directory and save the
corresponding parameter file (*.txt) under the same directory using the same
file name. The recall of image and parameter files is not supported.
After seleting this type:
Press Pic Type to select the desired storage format.
Press Para.Save to enable or disable the parameter save function.
One-key Bitmap Saving
After a USB storage device is connected, press
at the front panel to
quickly save the current screen image under the root directory of the USB
storage device in bitmap format.
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5.
12 Store and Recall
CSV
Save the waveform data displayed on the screen or of the specified channels in
external memory in a single “*.csv” file. You can specify the file name and the
saving directory and save the corresponding parameter file (*.txt) under the
same directory using the same file name. The recall of CVS and parameter files
is not supported.
After selecting this type:
Press DataDepth to select “Displayed” or “Maximum”. After selecting
“Maximum”, press Channel to select the desired channel (note that only
channels currently enabled can be selected).
Press Para.Save to enable or disable the parameter save function.
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12 Store and Recall
Internal Storage and Recall
Internal storage and recall support “Setups” in Storage. In the following part, the
storage and recall method and procedures are introduced.
1.
Save the specified oscilloscope setting in internal memory.
1) Connect the signal to the oscilloscope and obtain stable display.
2) Press Storage  Storage to select “Setups” and press Save to turn on the
interface as shown in Figure a. use
to select “Local Disk” (the characters
to open the local disk (Figure b).
turn green) and press down
Figure a
3) As shown in Figure b, the local disk can store at most 10 setting files. Use
to select the desired storage position, Save is illuminated and then press
the softkey to execute the saving operation. If the current position contains
a file, the original file can be overwritten or be delected by pressing Delete.
to select
and then press down
to return to the previous
Use
directory.
Figure b
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12 Store and Recall
Note: in internal storage, New File and New Folder are not available.
2.
Load the specified type of file in internal memory.
1) Press Storage  Storage to select “Setups” and then press Load to turn
on the interface as shown in Figure c. Use
to select “Local Disk” and
to open the local disk (Figure d).
then press down
2) As shown in Figure d, use
Load to load the file selected.
Figure c
to select the desired file to load and press
Figure d
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12 Store and Recall
External Storage and Recall
Before using external storage and recall, make sure that the USB storage device is
connected correctly. External storage supports all the types of files in Storage but in
recall, “Picture” and “CSV” are not supported.
1.
Save the specified type of file in the external USB storage device.
1) Connect the signal to the oscilloscope and obtain stable display.
2) Press Storage  Storage to select “CSV” and press Save to turn on the
interface as shown in Figure e. Use
to select “Disk D” and press down
to open the USB storage device (Figure f).
Figure e
to select the desired storage position. The file
3) As shown in Figure f, use
can be stored under the root directory or in a certain folder under the root
directory of the USB storage device.
Figure f
4) After the storage position is selected, press New File to turn on the
interface as shown in Figure g. Refer to the descriptions in “To Create a
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12 Store and Recall
New File or Folder” to create a new file name.
Figure g
5) Press OK to execute the saving operation.
2.
Load the specified type of file in the external USB storage device.
1) Press Storage  Storage to select “Traces” and then press Load to turn
on the interface as shown in Figure h. Use
to select “Disk D” and press
to open the USB storage device (Figure i).
down
Figure h
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12 Store and Recall
2) As shown in Figure i, use
to select the desired file to load and then press
Load to load the selected file.
Figure i
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12 Store and Recall
Disk Management
Press Storage  Disk.Manage to turn on the disk management interface as
shown in the figure below and use
to select the desired disk. The disk currently
to open the disk selected.
selected is displayed in green and press down
Execute the following operations through the disk management menu:
 To Select File Type
 To Create a New File or Folder
 To Delete a File or Folder
 To Rename a File or Folder
 To Clear the Local Memory
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To Select File Type
Except the file types in Storage, the oscilloscope can also display, save or read some
files for advanced applications such as mask file of the Pass/Fail test (*.pf),
waveform record file (*.rec), upgrade file (.rgl), parameter file (*.txt) and reference
waveform file (*.ref).
Press Storage  Disk.Manage  File Type to select the desired file type. The
default is “*.*”. Under the current directory, only files of which the suffix of the file
name matches with the file type selected will be displayed in the current disk.
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To Create a New File or Folder
This operation is only valid in external storage. Before using external disk, make sure
that the USB storage device is connected correctly.
First, press Storage  Disk.Manage and use
to select and open the external
disk (“Disk D”). Then, select the desired file type and select the desired directory
under which to create a new file or folder. The default is the root directory of the USB
storage device.
Then, press New File or New Folder to turn on the interface as shown in the figure
below.
This oscilloscope supports Chinese/English input method. The file name or folder
name can contain letters, numbers, underscores, spaces and Chinese characters and
the length of the characters is limited to 64 bytes. The following part introduces how
to input a file name or folder name using Chinese/English input method.
Operation Tip
During the name input, use the menu softkeys to select different operation areas,
then turn
to select the desired content and press down
to input the content
selected.
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12 Store and Recall
English Input Method
For example, create a file or folder with the name “Filename”.
1.
Press Keyboard.
1) Use
to select English input method “En” and uppercase input state “aA”.
2) Use
to input the letter “F”. If the input is wrong, press Delete to delete
the character input.
to select lowercase input state “Aa”.
3) Use
to input the remaining letters “ilename”.
4) Use
Name Input Area
2.
3.
Keyboard
Upper-lower Case Switch
Input Method Switch
During the name input, you can press Name to select the “Name Input Area”
and use
to move the cursor, then press Delete to delete the characters on
the left of the cursor one by one.
After finishing the input, press OK and the oscilloscope will create a folder or a
specified type of file with this name under the current directory.
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12 Store and Recall
Chinese Input Method
For example, create a file or folder with the name “文件名”.
1.
Press Keyboard.
1) Use
to select Chinese input method “中”. Note that Chinese is added in
the menu items at the right of the screen.
2) Use
to input the pinyin “wen”. If the input is wrong, press Delete to
delete the pinyin input. After “wen” is input, a series of Chinese characters
appear in the “Chinese Chraracter Selecting Area”.
3) Press Chinese and use
to select and input “文”.
4) Use the same method to input “件” and “名”.
Pinyin Input Area
Chinese Character Selecting Area
Name Input Area
Keyboard
Input Method Switch
Upper-lower Case Switch
2.
During the name input, you can press Name to select the “Name Input Area”
and then press Delete to delete the Chinese characters on the left of the cursor
one by one.
3.
After finishing the input, press OK and the oscilloscope will create a folder or a
specified type of file with this name under the current directory.
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12 Store and Recall
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To Delete a File or Folder
Folder operation is valid only in external storage. Before using the external disk,
make sure that the USB storage device is connected correctly.
1. Delete a file in internal memory.
1) Press Storage  Disk.Manage and use
to select and open the local
disk (“local Disk”).
2) Press File Type to select the desired type of file to delete (note that the file
types of internal storage include “*.stp”, “*.ref” and “*.pf”).
3) Use
to select the desired file to delete.
4) Press Delete to delete the file selected.
2. Delete a file or folder in external memory.
Press Storage  Disk.Manage and use
to select and open the external
disk (“Disk D”). Use
to select the file (or folder) to be deleted and then press
Delete to delete the selected file (or folder).
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12 Store and Recall
To Rename a File or Folder
Rename operation is valid only in external storage. Before using the external disk,
make sure that the USB storage device is connected correctly.
Press Storage  Disk.Manage and use
to select and open the external disk
(“Disk D”). Use
to select the desired file or folder to rename and then press
Rename to turn on the rename interface. For specific operations, please refer to the
descriptions in “To Create a New File or Folder”.
To Clear the Local Memory
Press Storage  Disk.Manage and select “Local Disk”, then turn to the next menu
page and press SecurityClear  OK to delete all the files stored in the local
memory. At the same time, the instrument will be resotred to the default setting.
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12 Store and Recall
Factory
Press Storage Default to return the oscilloscope to its factory state (refer to the
table below).
Table 12-2 Factory
Parameter
Factory
Horizontal Setting (HORIZONTAL)
Vertical Setting (VERTICAL)
Acquisition Setting (Acquire)
Trigger Setting (TRIGGER)
Display Setting (Display)
Cursor Setting (Cursor)
Storage Setting (Storage)
Utility Function Setting (Utility)
Math Operation Setting (MATHOperation)
Protocol Decoding (Decode 1, Decode 2)
Reference Waveform Setting (REF)
Horizontal Setting (HORIZONTAL)
Horizontal Time Base
1 μs
Horizontal Offset
0s
Delayed Sweep
OFF
Time Base Type
Y-T
Time Base Scale
Coarse
Horizontal Reference
The Center of the Screen
Vertical Setting (VERTICAL)
Vertical Scale
1V
Vertical Offset
0V
CH1 Switch
ON
CH2 Switch
ON
Channel Coupling
DC
Bandwidth Limit
OFF
Probe Ratio
1X
Channel Invert
OFF
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12 Store and Recall
Amplitude Scale
Coarse
Channel Unit
V
Acquisition Setting (Acquire)
Acquisition Mode
Normal
Sampling Mode
Real Time
Memory Depth
Auto
Anti-Aliasing
OFF
Trigger Setting (TRIGGER)
Trigger Type
Edge
Source
CH1
Slope
Rising Edge
Trigger Mode
Auto
Trigger Coupling
DC
Trigger Holdoff
100 ns
Noise Reject
OFF
Display Setting (Display)
Display Type
Vectors
Persistence Time
Min
Waveform Intensity
50%
Screen Grid
Brightness
50%
Menu Display
Infinite
Cursor Setting (Cursor)
Mode
OFF
Manual
Cursor Type
X
Source
CH1
Time Unit
s
CurA
-4*1μs
CurB
4*1μs
Track
Cursor A
12-18
CH1
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12 Store and Recall
Cursor B
CH1
CurA
-4*1 μs
CurB
4*1 μs
Storage Setting (Storage)
Storage Type
Traces
Utility Function Setting (Utility)
I/O Setting
Network
Configuration Mode
DHCP, Auto IP
USB Device
Computer
Sound
Sound
OFF
Pass/Fail Test
Enable Test
OFF
Source
CH1
Operate
OFF
X Mask
0.24 div
Y Mask
0.38 div
Message Display
OFF
Stop On Output
OFF
Output
Fail
Waveform Record
Mode
OFF
Record
End Frame
4064
Operate
OFF
Interval
100 ns
Total Frames
4064
Playback
Operate
OFF
Play Mode
Single
Interval
100 ns
Start Frame
1
Time Tag
OFF
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12 Store and Recall
Analyze
Analysis Mode
Trace
Source
CH1
Trace Mode
Current Frame
Current Frame
1
Templet Display
ON
Time Tag
OFF
System Setting
Vertical Expansion
Ground
Screen Saver
Default
Screen Saver Time
OFF
Aux
TrigOut
Math Operation Setting (MATHOperation)
Operate
OFF
A+B
Source A
CH1
Source B
CH1
Invert
OFF
Vertical Scale
2V
A-B
Source A
CH1
Source B
CH1
Invert
OFF
Vertical Scale
2V
A*B
Source A
CH1
Source B
CH1
Vertical Invert
OFF
Scale
2U
A/B
Source A
CH1
Source B
CH1
Invert
OFF
Vertical Scale
2U
FFT
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12 Store and Recall
Source
CH1
Window Function
Rectangle
Display
Split
Scale
dB
Vertical Scale
20 dB
Horizontal Scale
2.5 MHz/div
Sample Rate
100 MSa/s
Logic Operation
Expression
AND
Source A
CH1
Source B
CH1
Invert
OFF
Vertical Scale
1U
Threshold A
0V
Threshold B
0V
Advanced Operation
Expression
OFF
Expression
CH1+CH2
Vertical Scale
2V
Protocol Decoding (Decode 1, Decode 2)
Decoding Type
Parallel
BUS Status
OFF
Format
Hex
Offset
0
Threshold
0
Parallel
Clock Channel
None
Slope
Rising Edge
Bus Bits
1
Current Bit
0
Channel
CH1
RS232
TX
CH1
RX
CH2
Polarity
Normal
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12 Store and Recall
Endian
LSB
Baud
9600 bps
Data Bits
8
Stop Bit
1
Even-Odd Check
None
Packet
OFF
Packet End
00 (NULL)
I2C
SCLK
CH1
SDA
CH2
SPI
SCLK Channel
CH1
SCLK Slope
Rising Edge
SDA Channel
CH2
SDA Polarity
Low
Reference Waveform Setting (REF)
Channel Setting
REF1
Current Channel
REF1
Source
CH1
Color
Gray
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13 System Function Setting
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13 System Function Setting
The contents of this chapter:


Remote Interface Configuration
System-related
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13 System Function Setting
Remote Interface Configuration
DS2000 can communicate with PC via LAN, USB and GPIB (with the USB-GPIB
interface converter provided by RIGOL) buses. Please refer to the introduction
below to configure the corresponding interface before using the remote interfaces.
LAN Setting
Press Utility  IO Setting  LAN Set to turn on the LAN setting interface. You
can view the network connection status and configure the network parameters.
Network Status
Current IP
Config Type
MAC Address
VISA Address
IP Config Type
Status
Network Status
Connect the oscilloscope to your local area network using the network cable. The
network hole of the oscilloscope is at the rear panel. The oscilloscope will give
different prompts according to the current network connection status.
 Net Config Success!
 Acquire IP…
 IP Conflict!
 Unconnected!
 DHCP Fail!
 Read Status Fail!
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IP Configuration Type (DHCP)
The configuration type of the IP address can be DHCP, auto IP or static IP. In
different IP configuration type, the configuration mode of the network parameters
(such as the IP address) is different.
Press Config Mode and use
to select “DHCP”. Then press down
to select
this type. When DHPC type is valid, the DHCP server in the current network will
assign the network parameters (such as the IP address) for the oscilloscope.
IP Configuration Type (Auto IP)
Press Config Mode and use
to select “Auto IP”. Then press down
to select
this type. When the auto IP type is valid, disable DHCP manually, Gate and DNS are
added to the right side of the screen and users can define the gateway and DNS
server address of the oscilloscope. In auto IP mode, the oscilloscope will get the IP
address ranging from 169.254.0.1 to 169.254.255.254 and the subnet mask
255.255.0.0 automatically according to the current network configuration.
IP Configuration Type (Static IP)
Press Config Mode and use
to select “Static IP”. Then press down
to select
this type. When this type is valid, disable DHCP and auto IP manually, IP Address,
Mask, Gate and DNS are added to the right of the screen. At this point, users can
define their own network parameters (such as the IP address) of the oscilloscope.
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1.
13 System Function Setting
Set the IP Address
The format of IP address is nnn.nnn.nnn.nnn; wherein, the range of the first
nnn is from 0 to 223 (except 127) and the ranges of the other three nnn are
from 0 to 255. You are recommended to ask your network administrator for an
IP address available.
Press IP Address and use
to input the desired IP address. This setting will
be saved in the non-volatile memory and if Power-off Recall is set to “Last”,
DHCP and Auto IP will be “Off” and the oscilloscope will load the preset IP
address automatically at the next power-on.
2.
Set the Subnet Mask.
The format of the subnet mask is nnn.nnn.nnn.nnn; wherein, the range of the
nnn is from 0 to 255. You are recommended to ask your network administrator
for a subnet mask available.
Press Mask and use
to input the desired subnet mask. This setting will be
saved in the non-volatile memory and if Power-off Recall is set to “Last”,
DHCP and Auto IP will be “Off” and the oscilloscope will load the preset subnet
mask automatically at the next power-on.
Set the Gate
You can set this paramter In Auto IP and Static IP mode.
The format of the gate is nnn.nnn.nnn.nnn; wherein, the range of the first nnn is
from 0 to 223 (except 127) and the ranges of the other three nnn are from 0 to 255.
You are recommended to ask your network administrator for a gate address
available.
Press Gate and use
to input the desired gate address. This setting will be saved
in the non-volatile memory and if Power-off Recall is set to “Last”, DHCP and
Auto IP will be “Off” and the oscilloscope will load the preset gate address
automatically at the next power-on.
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13 System Function Setting
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Set the Domain Name Server
You can set this paramter In Auto IP and Static IP mode.
The address format of the domain name server is nnn.nnn.nnn.nnn; wherein, the
range of the first nnn is from 0 to 223 (except 127) and the ranges of the other three
nnn are from 0 to 255. You are recommended to ask your network administrator for
an address available.
press DNS and use
to input the desired address. Generally, users do not need to
set the DNS, therefore this parameter setting can be ignored.
Tips


When the three IP configuration types are all turned on, the priority of the
parameter configuration from high to low is “DHCP”, “Auto IP” and “Static IP”.
The three IP configuration types can not be all turned off at the same time.
Apply the Network Parameter Setting
Press Apply to validate the current network parameter setting.
Initialize the Network Parameters
Press Initialize to return the network parameters to the default state.
MAC Address
For each oscilloscope, the MAC address is unique. When attributing IP address for
the oscilloscope, the MAC address is usually used to identify the instrument.
VISA Address
Display the VISA address currently used by the oscilloscope.
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13 System Function Setting
USB Device
This oscilloscope can communicate with PC or PictBridge printer via the USB Device
interface at the rear panel. You need to set the oscilloscope to make it match with
different device types.
Press Utility  IO Setting  USB Device and use
device type.


to select the desired
Computer: in this type, the oscilloscope can communicate with the PC.
PictBridge: in this type, the oscilloscope can communicate with the PictBridge
printer.
To Set the GPIB Address
When using the GPIB mode to control the oscilloscope, you need to extend a GPIB
interface for the oscilloscope using the USB-GPIB interface converter (need to be
ordered separately).
To set the GPIB address of this interface, press Utility  IO Setting  GPIB and
use
to input the desired address. The default is 1 and the range is from 1 to 30.
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13 System Function Setting
System-related
Sound
When the sound is enabled, you can hear the sound of the beeper when you press a
function key or a menu softkey or when the prompt message pops up.
Press Utility  Sound to select
sound is turned on, a trumpet icon
(on) or
(off). The default is off. When the
will be displayed at the lower right corner of
the screen.
Language
This oscilloscope supports multiple language menus, Chinese/English help and
prompt messages.
Press Utility  Language and use
to select the desired language. Then press
down
to select the language. The languages currently available are Simplified
Chinese, Traditional Chinese and English.
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13 System Function Setting
System Information
Press Utility  System  System Info to view the version information of your
oscilloscope. The system information contains the following contents as shown in the
figure below.
Power-off Recall
You can set the system configuration to be recalled when the oscilloscope is powered
on again after power-off.
Press Utility  System  Power On to select “Last” (default) or “Default”.
 Last: return to the setting of the system at last power-off.
 Default: return to the factory setting of the system.
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13 System Function Setting
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System Time
The system time is displayed at the lower right corner of the screen in “hh:mm
(hour:minute)” format. When printing or storing a waveform, the file output will
contain this time information.
Press Utility  System  System Time  System Time to turn on the setting
interface as follows.
In the figure, the item in green (such as 2012) is the item that can be modified
to modify and press down
to complete the input. The order of
currently. Use
time modifications is: year (2012) → month (03) → date (23) → hour (14) →
minute (47)→ second (24). The setting range of each item conforms to the
convention:
 Year: 2011 to 2099
 Month: 01-12
 Date: 01-31 (28, 29 or 30)
 Hour: 00 to 23
 Minute: 00 to 59
 Second: 00 to 59
Press Apply to put the current setting into effect. The time at the lower right corner
of the screen will be updated.
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13 System Function Setting
Screen
When the oscilloscope enters the idle state and holds for a certain period of time, the
screen saver program will be enabled.
Press Utility  System  Screen to open the screen saver setting menu.
“Default” means using the icon RIGOL as the screen saver icon.
Press Time to select the screen saver time. When “OFF” is selected, the screen saver
program is disabled. The screen saver time can be set to 1 min, 2 min, 5 min, 15 min,
30 min, 45 min, 60 min, 2 hour or 5 hour.
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13 System Function Setting
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Self-calibration
The self-calibration program can quickly make the oscilloscope reach the best
working state to get the most precise measurement values. You can perform
self-calibration at any time especially when the change of the environment
temperature is up to or more than 5 ℃. Make sure that the oscilloscope has been
warmed up or operated for more than 30 minutes before the self-calibration.
Disconnect all the input channels and then press Utility  Self-Cal and the
self-calibration interface as shown in the figure below is displayed.
Press Start and the oscilloscope will start to execute the self-calibration program.
Press Exit to give up the self-calibration operation at any time and return to the
previous menu.
Note: most of the keys are disabled during the self-calibration.
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13 System Function Setting
Aux Output
Users can set the type of the signal output from the [Trigger Out] connector at the
rear panel.
Press Utility  AuxOutput to select the desired output type.
1.
TrigOut
After this type is selected, the oscilloscope outputs a signal that can reflect the
current capture rate of the oscilloscope at each trigger.
2.
PassFail
After this type is selected, the oscilloscope will output a pulse signal when failed
waveforms are detected. This signal can be connected to other control systems
to conveniently view the test results.
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13 System Function Setting
Option Management
This oscilloscope provides multiple options to fulfill your measurement requirements.
Please contact your RIGOL sales representative or RIGOL technical support to
order the corresponding options. You can view the options currently installed on the
oscilloscope or activate the newly bought option serial number through this menu.
Press Utility  Options  Installed to view the options currently installed on the
oscilloscope. Press Setup to enter the serial number activation operation menu.

Editor: press this softkey to turn on the serial number input interface as shown
to select the characters on the virtual keyboard and
in the figure below. Use
press down the knob to input the character.
Serial Number Input Area



Character Selecting Area
Backspace: press this softkey to delete the characters in the “Serial Number
Input Area” from the right to the left.
Clear: press this softkey to clear all the characters in the “Serial Number Input
Area”.
Apply: press this softkey and the oscilloscope will activate the corresponding
option using the serial number currently input.
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14 Remote Control
RIGOL
14 Remote Control
The oscilloscope can be controlled remotely mainly through the following two
methods.
User-defined programming
Users can program and control the oscilloscope by using the SCPI (Standard
Commands for Programmable Instruments) commands. For more information about
the commands and programming, refer to the Programming Guide.
Use PC software provided by RIGOL or other manufacturers
Users can use the PC software Ultra Sigma of RIGOL, Measurement &
Automation Explorer of NI (National Instruments Corporation) or Agilent IO
Libraries Suite of Agilent (Agilent Technologies, Inc.) to send commands to
control the oscilloscope remotely.
This oscilloscope can communicate with PC through USB, LAN and GPIB (with the
USB-GPIB interface converter provided by RIGOL) instrument buses. This chapter
will give a detailed introduction of how to use Ultra Sigma to control DS2000
remotely through various interfaces. For the Ultra Sigma software, please contact
RIGOL salesmen or technical support.
The contents of this chapter:



Remote Control via USB
Remote Control via LAN
Remote Control via GPIB
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14 Remote Control
Remote Control via USB
1.
Connect the device
Connect the oscilloscope (USB DEVICE) with your PC using a USB cable.
2.
Install the USB driver
This oscilloscope is a USBTMC device. Assuming that your PC has already been
installed with Ultra Sigma, after you connect the oscilloscope to the PC and
turn both on for the first time (the oscilloscope is automatically configured to
USB interface), the New Hardware Wizard as shown in the figure below is
displayed on the PC. Please install the “USB Test and Measurement Device”
driver following the directions in the wizard. The steps are as follows.
1
2
14-2
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14 Remote Control
3
4
5
6
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14 Remote Control
7
3.
Search device resource
Start up the Ultra Sigma and the software will automatically search for the
oscilloscope resources currently connected to the PC. You can also click
to search the resources. During the search, the status bar of the
software is as shown in the figure below.
14-4
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14 Remote Control
RIGOL
4.
View the device resource
The resources found will appear under the “RIGOL Online Resource” directory
and the model number and USB interface information of the instrument will also
be displayed as shown in the figure below.
5.
Communication test
Right click the resource name
“DS2202 (USB0::0x1AB1::0x04B0::DS2A0000000001::INSTR)” to select
“SCPI Panel Control” to turn on the remote command control panel (as shown in
the figure below) through which you can send commands and read data.
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14 Remote Control
Remote Control via LAN
1.
Connect the device
Connect the oscilloscope to your LAN using a network cable.
2.
Configure network parameters
Configure the network parameters of the oscilloscope according to the
description in “LAN Setting”.
3.
Search device resource
Start up the Ultra Sigma and click
figure below is displayed. Click
. The window as shown in the
(as shown in Figure (a)) and the
software searches for the oscilloscope resources currently connected to the LAN
and the resources found are displayed at the right of the window. As shown in
to add it.
Figure (b), select the desired resource name and click
Note that if you want to remove the unwanted resource, select the resource
name and click
(as shown in Figure (c)).
Figure (a)
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RIGOL
Figure (b)
Figure (c)
4.
View device resource
The resources found will appear under the “RIGOL Online Resource” directory as
shown in the figure below.
5.
Communication test
Right click the resource name “DS2202 (TCPIP::172.16.3.183::INSTR)” to select
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14 Remote Control
“SCPI Panel Control” to turn on the remote command control panel (as shown in
the figure below) through which you can send commands and read data.
6.
14-8
Load LXI webpage
As this oscilloscope conforms to LXI-C standards, you can load LXI webpage
through Ultra Sigma (right-click the resource name and select LXI-Web; or
directly input the IP address in the browser). Various important information
about the oscilloscope (including the model number, manufacturer, serial
number, description, MAC address and IP address) will be displayed on the
webpage as shown in the figure below.
DS2000 User’s Guide
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14 Remote Control
Remote Control via GPIB
1.
Connect the device
Use the USB to GPIB interface converter to extend a GPIB interface for the
oscilloscope. Then connect the oscilloscope to your PC using a GPIB cable.
2.
Install the driver of GPIB card
Install the driver of the GPIB card which has been connected to the PC correctly.
3.
Set the GPIB address
Set the GPIB address of the oscilloscope according to the description in “To Set
the GPIB Address”.
4.
Search device resource
Start up the Ultra Sigma and click
to open the panel as shown in
the figure below. Click “Search” and the software will search the GPIB
instrument resources connected to the PC. The device resources will be
displayed on the right side of the panel.
If resources can not be found automatically:
 Select the GPIB card address of the PC from the comboBox of “GPIB::” and
select the GPIB address set in the oscilloscope from the comboBox of
“::INSTR”.
 Click “Test” to check whether the GPIB communication works normally; if
not, please follow the corresponding prompt messages to solve the
problem.
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14 Remote Control
5.
View device resource
Click “OK” to return back to the main interface of Ultra Sigma. The resources
found will appear under the “RIGOL Online Resource” directory.
6.
Communication Test
Right-click the resource name “DS2202 (GPIB0::18::INSTR)” to select “SCPI
Panel Control” to turn on the remote command control panel through which you
can send commands and read data as shown in the figure below.
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15 Troubleshooting
RIGOL
15 Troubleshooting
The commonly encountered failures and their solutions are listed below. When you
encounter those problems, please solve them following the corresponding steps. If
the problem remains still, please contact RIGOL and provide your device
information (Utility  System  System Info).
1.
The screen is still dark (no display) after power on:
(1) Check whether the power is correctly connected.
(2) Check whether the power switch is really on.
(3) Check whether the fuse is burned out. If the fuse needs to be changed,
please use the specified fuse.
(4) Restart the instrument after finishing the above inspections.
(5) If it still does not work correctly, please contact RIGOL.
2.
The signal is sampled but no waveform of the signal is displayed:
(1) Check whether the probe is correctly connected to the signal connecting
wire.
(2) Check whether the signal connecting wire is correctly connected to the BNC
(namely channel connector).
(3) Check whether the probe is correctly connected to the item to be tested.
(4) Check whether there are signals generated from the item to be tested (you
can connect the probe compensation signal to the problematic channel to
determine which has problem, the channel or the item to be tested).
(5) Resample the signal.
3.
The tested voltage amplitude is greater or lower than the actual value
(note that this problem usually occurs when probe is used):
Check whether the attenuation coefficient of the channel complies with the
attenuation ratio of the probe.
4.
There is waveform display but not stable:
(1) Check the trigger signal source: check whether the Source item at the
trigger panel complies with the signal channel actually used.
(2) Check the trigger type: general signals should use “Edge” trigger and video
DS2000 User’s Guide
15-1
RIGOL
15 Troubleshooting
signal should use “Video” trigger. Only when the proper trigger type is used,
can the waveform be displayed stably.
(3) Change the trigger holdoff setting.
5.
No display after pressing RUN/STOP:
Check whether the MODE at the trigger panel (TRIGGER) is on “Normal” or
“Single” and whether the trigger level exceeds the waveform range. If yes, set
the trigger level to the middle or set the MODE to “Auto”.
Note: using AUTO could automatically finish the above setting.
6.
The display of waveform is ladder-like:
(1) The horizontal time base might be too low. Increase the horizontal time
base to increase the horizontal resolution and improve the display.
(2) If the display Type is “Vectors”, the lines between the sample points may
cause ladder-like display. Set Type to “Dots” to solve the problem.
7.
Fail to connect PC or PictBridge printer through USB:
Check the IO Setting in Utility to make sure whether the setting in USB
Device matches the device currently connected. If needed, restart the
oscilloscope.
8.
The USB storage device can not be recognized:
(1) Check whether the USB storage device can work normally.
(2) Make sure that the USB storage device being used is flash storage type.
This oscilloscope does not support hardware storage type.
(3) Make sure whether the capacity of the USB storage device is too large. It is
recommended that the capacity of the USB storage device being used with
this oscilloscope is no larger than 8 GBytes.
(4) Restart the instrument and then insert the USB storage device to check it.
(5) If the USB storage device still can not be used normally, please contact
RIGOL.
15-2
DS2000 User’s Guide
RIGOL
16 Specifications
16 Specifications
All the specifications are guaranteed except the parameters marked with “Typical”
and the oscilloscope needs to operate for more than 30 minutes under the specified
operation temperature.
Sample
Sample Mode
Real-time Sample
Real Time Sample
Rate
2 GSa/s (single-channel)
1 Gsa/s (dual-channel)
Peak Detect
500 ps (single-channel)
1 ns (dual-channel)
Averaging
After both the channels finish N samples at the same time, N
can be 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096
or 8192.
High Resolution
12 bits of resolution when ≥5 μs/div @ 1 GSa/s (or ≥10
μs/div @ 500 MSa/s).
Memory Depth
single-channel: Auto, 14k pts, 140k pts, 1.4M pts, 14M pts
and 56M pts (option) are available
dual-channel: Auto, 7k pts, 70k pts, 700k pts, 7M pts and
28M pts (option) are available
Input
Number of Channels
Two channels
Input Coupling
DC, AC or GND
Input Impedance
(1 MΩ±1%) || (16 pF±3 pF)
Probe Attenuation
Coefficient
0.01X to 1000X, in 1-2-5 step
Maximum Input
Voltage (1MΩ)
Maximum Input Voltage of the Analog Channel
CAT I 300 Vrms, CAT II 100 Vrms,
DS2000 User’s Guide
16-1
RIGOL
16 Specifications
Transient Overvoltage 1000 Vpk
with RP2200 10:1 probe: CAT II
with RP3300 10:1 probe: CAT II
with RP3500 10:1 probe: CAT II
with RP5600 10:1 probe: CAT II
300
300
300
300
Vrms
Vrms
Vrms
Vrms
Horizontal
Timebase Scale
DS2202: 2.000 ns/div to 1.000 ks/div
DS2102/DS2072: 5.000 ns/div to 1.000 ks/div
Timebase Accuracy1
≤ ± 25 ppm
Clock Drift
≤ ± 5 ppm/year
Max Delay Range
Pre-trigger (negative delay): ≥1 screen width
Post-trigger (positive delay): 1 s to 100,000 s
Timebase Mode
Y-T, X-Y, Roll, Delayed Sweep
Number of XYs
1
Waveform Capture
Rate2
50,000 wfms/s (dots display)
Vertical
Bandwidth (-3dB)
DS2202: DC to 200 MHz
DS2102: DC to 100 MHz
DS2072: DC to 70 MHz
Single-shot
Bandwidth
DS2202: DC to 200 MHz
DS2102: DC to 100 MHz
DS2072: DC to 70 MHz
Vertical Resolution
8bit
Vertical Scale
500 μV/div to 10 V/div
Offset Range
500 μV /div to 50 mV/div: ± 2 V
51 mV/div to 200 mV/div: ± 10 V
205 mV/div to 2 V/div: ± 50 V
2.05 V/div to 10 V/div: ± 100 V
Bandwidth Limit1
DS2202: 20 MHz/100 MHz
16-2
DS2000 User’s Guide
RIGOL
16 Specifications
DS2102: 20 MHz
DS2072: 20 MHz
Low Frequency
Response
(AC Coupling, -3dB)
≤5 Hz (on BNC)
Calculated Rise
Time1
DS2202: 1.8 ns
DS2102: 3.5 ns
DS2072: 5 ns
DC Gain Accuracy
±2% full scale
DC Offset Accuracy
±0.1 div ± 2 mV ± 1% offset value
Channel to Channel
Isolation
DC to maximum bandwidth: >40 dB
Trigger
Trigger Level Range
Internal
± 5 div from center of the screen
EXT
±4V
Trigger Mode
Auto, Normal, Single
Holdoff Range
100 ns to 10 s
High Frequency
Rejection1
75 kHz
Low Frequency
Rejection1
75 kHz
Trigger Sensitivity
1 div (below 10 mV or noise rejection is enabled)
0.3 div (above 10 mV and noise rejection is disabled)
Edge Trigger
Edge Type
Rising, Falling, Rising&Falling
Pulse Trigger
Pulse Condition
Positive Pulse Width (greater than, lower than, within
specific interval)
Negative Pulse Width (greater than, lower than, within
specific interval)
Pulse Width Range
2 ns to 4 s
Runt Trigger
Pulse Width
DS2000 User’s Guide
None, >, <, <>
16-3
RIGOL
16 Specifications
Condition
Pulse Polarity
Positive, Negative
Pulse Width Range
2 ns to 4 s
Windows Trigger (Option)
Windows Type
Rising, Falling, Rising&Falling
Trigger Position
Enter, Exit, Time
Windows Time
16 ns to 4 s
Nth Edge Trigger (Option)
Edge Type
Rising, Falling
Idle Time
16 ns to 10 s
Edge Number
1 to 65535
Slope Trigger
Slope Condition
Positive Slope (greater than, lower than, within specific
interval)
Negative Slope (greater than, lower than, within specific
interval)
Time Setting
2 ns to 4 s
Video Trigger (HDTV Option)
Signal Standard
Support standard NTSC, PAL and SECAM broadcasting
standards; support 480P, 576P, 720P, 1080P and 1080I HDTV
standards
Pattern Trigger
Pattern Setting
H, L, X, Rising, Falling
Delay Trigger (Option)
Edge Type
Rising, Falling
Delay Type
>, <, <>, ><
Delay Time
2 ns to 4 s
TimeOut Trigger (Option)
Edge Type
Rising, Falling, Rising&Falling
Timeout time
16 ns to 4 s
Duration Trigger (Option)
Pattern
H, L, X
Trigger Condition
>, <, <>
Duration Time
2 ns to 4 s
Setup/Hold Trigger
Edge Type
16-4
Rising, Falling
DS2000 User’s Guide
RIGOL
16 Specifications
Data Type
H, L
Setup Time
2 ns to 1 s
Hold Time
2 ns to 1 s
RS232/UART Trigger
Polarity
Normal, Invert
Trigger Condition
Start, Error, Check Error, Data
Baud Rate
2400 bps, 4800 bps, 9600 bps, 19200 bps, 38400 bps, 57600
bps, 115200 bps, User
Data Bits
5 bit, 6 bit, 7 bit, 8 bit
I2C Trigger
Trigger Condition
Start, Restart, Stop, Missing ACK, Address, Data, A&D
Address Bits
7 bit, 8 bit, 10 bit
Address Range
0 to 127, 0 to 255, 0 to 1023
Byte Length
1 to 5
SPI Trigger
Trigger Condition
Timeout
Timeout Value
100 ns to 1 s
Data Bits
4 bit to 32 bit
Data Line Setting
H, L, X
USB Trigger (Option)
Signal Speed
Low Speed, Full Speed
Trigger condition
SOP, EOP, RC, Suspend, Exit Suspend
Measure
Cursor
Manual Mode
Auto Measurement
DS2000 User’s Guide
Voltage Deviation between Cursors (△V)
Time Deviation between Cursors (△T)
Reciprocal of △T (Hz) (1/△T)
Track Mode
Voltage and Time Values of the Waveform
Point
Auto Mode
Allow to display cursors during auto
measurement
Measurements of Maximum, Minimum, Peak-Peak Value, Top
Value, Bottom Value, Amplitude, Average, Mean Square
Root, Overshoot, Pre-shoot, Area, Period Area, Frequency,
16-5
RIGOL
16 Specifications
Period, Rise Time, Fall Time, Positive Pulse Width, Negative
Pulse Width, Positive Duty Cycle, Negative Duty Cycle, Delay
AB , Delay AB , Phase AB , Phase AB
Number of
Measurements
Display 5 measurements at the same time.
Measurement
Range
Screen or cursor.
Measurement
Statistic
Average, Max, Min, Standard Deviation, Number of
Measurements
Frequency Counter
Hardware 6 bits frequency counter
(channels are selectable)
Math Operation
Waveform
Operation
A+B, A-B, A×B, A/B, FFT, Editable Advanced Operation, Logic
Operation
FFT Window
Function
Rectangle, Hanning, Blackman, Hamming
FFT Display
Split, Full Screen
FFT Vertical
Scale
Linear Vrms, dBV rms
Logic
Operation
AND, OR, NOT, XOR
Math Function
Intg, Diff, Log, Exp, Sqrt, Sine, Cosine, Tangent
Number of
Buses for
Decoding
2
Decoding Type
Parallel (standard), RS232/UART (option), I2C (option) , SPI
(option)
Display
Display Type
8.0 inches (203 mm) TFT LCD display
Display Resolution
800 Horizontal ×RGB×480 Vertical Pixel
16-6
DS2000 User’s Guide
RIGOL
16 Specifications
Display Color
160,000 Color (TFT)
Persistence Time
Min, 50ms, 100ms, 200ms, 500ms, 1 s, 2 s, 5 s, 10 s, 20 s,
Infinite
Display Type
Dots, Vectors
Real-time Clock
Time and Date (user adjustable)
I/O
Standard Ports
USB HOST (support USB-GPIB), USB DEVICE, LAN, Aux
Output (TrigOut/PassFail)
Printer Compatibility
PictBridge
General Specifications
Probe Compensation Output
Output Voltage1
1
Frequency
About 3 V, peak-peak
1 kHz
Power
Power Voltage
100 to 240 V, 45 to 440 Hz
Power
Maximum 50 W
Fuse
2 A, T Degree, 250 V
Environment
Temperature Range
O perating: 0 ℃ to + 50 ℃
Non-operating: -20 ℃ to + 70 ℃
Cooling Method
Humidity Range
fan cooling
Under +35 ℃: ≤90% Relative Humidity
+35 ℃ to +50 ℃: ≤60% Relative Humidity
Altitude
Operating: under 3,000 meters
Non-operating: under 15,000 meters
Physical Characteristics
Size3
Width×Height×Depth = 361.6 mm× 179.6 mm×130.8
mm
Weight4
Package Excluded
3.9 kg ± 0.2 kg
Package Included
4.5 kg ± 0.5 kg
DS2000 User’s Guide
16-7
RIGOL
16 Specifications
Calibration Interval
The recommended calibration interval is one year.
Regulatory Information
Electromagnetic
Compatibility
2004/108/EC
Execution standard EN 61326-1:2006 EN 61326-2-1:2006
Safety
UL 61010-1:2004; CAN/CSA-C22.2 NO. 61010-1-2004;
EN 61010-1:2001; IEC 61010-1:2001
1
Typical.
2
Maximum value. 20 ns, single-channel mode, dots display, auto memory depth.
3
Supporting legs and handle folded, knob height included.
4
Standard configuration.
16-8
DS2000 User’s Guide
RIGOL
17 Appendix
17 Appendix
Appendix A: Accessories and Options
Description
DS2202 (200 MHz, dual-channel)
DS2102 (100 MHz, dual-channel)
Model
DS2072 (70 MHz, dual-channel)
Power Cord conforming to
the standard of the country
USB Cable
2 Passive Probes (350 MHz)
Standard
Accessories Quick Guide
Accessories
Resource CD (include User’s
Guide and application
software)
Passive Probe (500 MHz)
Optional
Accessories Rack Mount Kit
Memory
56Mpts (single channel)/
Depth
28Mpts (dual-channel)
Options
Windows trigger, Nth edge
Advanced
trigger, HDTV trigger, delay
Trigger
Options
trigger,
timeout
trigger,
Options
duration trigger, USB trigger
Decoding
Options
RS232/UART decoding kit
I2C decoding kit
SPI decoding kit
Order Number
DS2202
DS2102
DS2072
CB-USB-150
RP3300
RP3500A
RM-DS-2
MEM-DS2
AT-DS2
SD-DS2
Note: all the options or accessories can be ordered from you local RIGOL Office.
DS2000 User’s Guide
17-1
RIGOL
17 Appendix
Appendix B: Warranty
RIGOL warrants that its products mainframe and accessories will be free from
defects in materials and workmanship within the warranty period.
If a product is proven to be defective within the respective period, RIGOL
guarantees the free replacement or repair of products which are approved defective.
To get repair service, please contact with your nearest RIGOL sales and service
office.
RIGOL does not provide any other warranty items except the one being provided by
this summary and the warranty statement. The warranty items include but not being
subjected to the hint guarantee items related to tradable characteristic and any
particular purpose. RIGOL will not take any responsibility in cases regarding to
indirect, particular and ensuing damage.
17-2
DS2000 User’s Guide
17 Appendix
RIGOL
Appendix C: Any Question or Comment?
If you have any question or comment on our document, please mail to:
[email protected]
DS2000 User’s Guide
17-3
Index
RIGOL
Index
- Duty ...................................... 6-16
- Width .................................... 6-16
+ Duty ..................................... 6-16
+ Width ................................... 6-16
Acquisition Mode ......................... 4-2
Addition ..................................... 6-2
AND ........................................... 6-8
Antialiasing ................................. 4-9
Auto IP .................................... 13-3
Auto Mode................................ 6-35
Aux Output ..............................13-12
Average ..................................... 4-2
Bandwidth Limit .......................... 2-3
Blackman ................................... 6-6
Center...................................... 3-10
Channel Coupling ........................ 2-3
Channel Label ............................. 2-7
CSV ......................................... 12-4
Cursor ...................................... 6-28
Decoding Table ........................... 7-4
Delay ....................................... 6-17
Delay Calibration ......................... 2-8
Delay Trigger ............................ 5-27
Delayed Sweep ........................... 3-2
DHCP ....................................... 13-3
Division ...................................... 6-4
Domain Name Server ................ 13-5
Dots......................................... 11-2
Duration Trigger........................ 5-31
Edge Trigger ............................... 5-9
Edge Type .................................. 5-9
Expression ................................ 6-10
Factory ....................................12-17
Fall Time .................................. 6-16
DS2000 User’s Guide
FFT ............................................ 6-5
Frequency ................................ 6-16
Frequency Counter .................... 6-21
Gate ......................................... 13-4
Hamming.................................... 6-6
Hanning ..................................... 6-6
High Resolution ........................... 4-4
Horizontal Reference ................. 3-10
Horizontal Scale .......................... 3-9
I2C Decoding ............................ 7-10
IP Address ................................ 13-4
MAC ......................................... 13-5
Manual Mode ............................ 6-29
Memory Depth ............................ 4-8
Multiplication .............................. 6-3
Network Status ......................... 13-2
Normal ....................................... 4-2
NOT ........................................... 6-8
Nth Edge Trigger ....................... 5-18
Operator ................................... 6-12
OR ............................................. 6-8
Overshoot ................................. 6-18
Parallel Decoding......................... 7-2
Pattern Setting ................. 5-25, 5-31
Pattern Trigger .......................... 5-25
Peak Detect ................................ 4-4
Period ...................................... 6-16
Persistence Time ....................... 11-3
Picture...................................... 12-3
Preshoot ................................... 6-19
Pulse Condition ......................... 5-11
Pulse Trigger ............................. 5-11
Pulse Width Setting ................... 5-11
Record Constant On .................. 10-4
1
RIGOL
Rectangle ................................... 6-6
Rise Time ..................................6-16
Roll ............................................ 3-8
RS232 Decoding ......................... 7-5
Runt Trigger ..............................5-13
Sample Rate ............................... 4-6
Setup/Hold Trigger .....................5-33
Setups ......................................12-3
Slope Condition .........................5-20
Slope Trigger .............................5-20
SPI Decoding .............................7-13
Static IP ....................................13-3
Subnet Mask..............................13-4
Substraction ............................... 6-3
Sync .........................................5-23
Threshold ..................................6-23
Time Setting ..............................5-20
TimeOut Trigger ........................5-29
Traces .......................................12-3
Track Mode................................6-32
Trig Pos .....................................3-10
Trigger Coupling ......................... 5-5
Trigger Holdoff ........................... 5-6
Trigger Level .............................. 5-9
Trigger Mode .............................. 5-3
Trigger Source ............................ 5-2
USB ..........................................13-6
Vamp ........................................6-18
2
Index
Variable .................................... 6-11
Vavg ........................................ 6-18
Vbase ....................................... 6-18
Vectors ..................................... 11-2
Vertical Expansion ....................... 2-6
Vertical Scale .............................. 2-5
Vertical Window ........................ 5-21
Video Polarity ............................ 5-23
Video Standard ......................... 5-23
Video Trigger ............................ 5-23
VISA ........................................ 13-5
Vmax ....................................... 6-18
Vmin ........................................ 6-18
Vpp .......................................... 6-18
Vrms ........................................ 6-18
Vtop ......................................... 6-18
Waveform Analysis .................... 10-8
Waveform Confusion ................... 4-6
Waveform Distortion .................... 4-6
Waveform Invert ......................... 2-5
Waveform Leakage ...................... 4-7
Waveform Playback ................... 10-6
Waveform Record ...................... 10-2
Waveforms ............................... 12-3
Window Function ........................ 6-5
XOR ........................................... 6-8
X-Y ............................................. 3-5
Y-T ............................................. 3-4
DS2000 User’s Guide

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