Scientific SMO2000X-E User manual

Digital Oscilloscope
SMO2000X-E
User Manual

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Copyright © Scientific All rights reserved.
This instrument contains proprietary information, no part of this manual may be
photocopied, reproduced or translated without any prior written consent.
Information in this manual supersedes all corresponding previous released material.
Scientific continues to improve products and reserves rights to amend part or all of the
specifications, procedures, equipment at any time without notice.
Ver_1.00/ 1020
Scientific Mes-Technik Pvt. Ltd
B-14 Industrial Estate, Pologround
Indore - 452015 (India)
Tel : [phone]/33
Fax: [phone]
Email : sa[email protected]
Website : www.scientificindia.com

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Contents
1. Introduction..........................................................................................................9
2. General Safety Summary.....................................................................................10
2.1 Safety Terms and Symbols ......................................................................12
2.2 Working Environment ..............................................................................12
2.3 Cooling Requirements..............................................................................13
2.4 AC Power.................................................................................................14
2.5 Power & Ground Connections ..................................................................14
2.6 Calibration................................................................................................14
2.7 Cleaning...................................................................................................15
2.8 Abnormal Conditions................................................................................ 15
3. Quick Start ..........................................................................................................16
3.1 General Inspection ...................................................................................17
3.2 Appearance and Dimensions ...................................................................18
3.3 Prepare for Using ....................................................................................19
3.3.1 Adjust the Supporting Legs.........................................................19
3.3.2 Connect the Power Supply .........................................................19
3.3.3 Power-on Inspection ..................................................................19
3.3.4 Connect the Probe .....................................................................20
3.3.5 Function Inspection ....................................................................20
3.4 Probe Compensation ...............................................................................21
3.5 Front Panel Overview...............................................................................22
3.6 Rear Panel Overview ..............................................................................23
3.7 Front Panel Function Overview ...............................................................24
3.7.1 Horizontal ..................................................................................24
3.7.2 Vertical ......................................................................................25
3.7.3 Trigger .......................................................................................26
3.7.4 Run Control ...............................................................................27
3.7.5 Universal Knob ...........................................................................28
3.7.6 Menu .........................................................................................29
3.8 Help ........................................................................................................31
3.9 User Interface ..........................................................................................32
3.10 Security Lock ...........................................................................................34
4. Vertical System .................................................................................................... 35
4.1 Enable the Channel .................................................................................36
4.2 Vertical Scale ..........................................................................................36
4.3 Vertical Position ......................................................................................37

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4.4 Coupling ..................................................................................................37
4.5 Bandwidth Limit .......................................................................................38
4.6 Probe .......................................................................................................38
4.7 Input Impedance ......................................................................................39
4.8 Unit .........................................................................................................39
4.9 Deskew ...................................................................................................39
4.10 Invert........................................................................................................39
4.11 Trace Visible/Hidden ...............................................................................40
5. Horizontal System ...............................................................................................41
5.1 Horizontal Scale ......................................................................................42
5.2 Trigger Delay ...........................................................................................42
5.3 Roll ..........................................................................................................42
5.4 Zoom .......................................................................................................43
6. Sample System .................................................................................................... 45
6.1 Run Control ............................................................................................. 46
6.2 Overview .................................................................................................47
6.2.1 Sampling Theory .......................................................................47
6.2.2 Sample Rate ..............................................................................47
6.2.3 Bandwidth and Sample Rate .....................................................48
6.3 Memory Depth..........................................................................................49
6.4 Sampling Mode ........................................................................................49
6.5 Interpolation Method ................................................................................49
6.6 Acquisition Mode......................................................................................51
6.6.1 Normal ....................................................................................... 51
6.6.2 Peak Detect ...............................................................................52
6.6.3 Average .....................................................................................54
6.6.4 Eres ...........................................................................................55
6.7 Horizontal Format ....................................................................................55
6.8 Sequence Mode ......................................................................................57
7. Trigger ................................................................................................................. 59
7.1 Trigger Source .........................................................................................60
7.2 Trigger Mode ...........................................................................................60
7.3 Trigger Level ...........................................................................................61
7.4 Trigger Coupling.......................................................................................62
7.5 Holdoff .....................................................................................................62
7.6 Noise Rejection .......................................................................................63
7.7 Trigger Type ............................................................................................65
7.7.1 Edge Trigger...............................................................................65

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7.7.2 Slope Trigger.............................................................................. 66
7.7.3 Pulse Trigger ..............................................................................68
7.7.4 Video Trigger .............................................................................70
7.7.5 Window Trigger .........................................................................74
7.7.6 Interval Trigger ..........................................................................76
7.7.7 Dropout Trigger .........................................................................78
7.7.8 Runt Trigger ...............................................................................80
7.7.9 Pattern Trigger ...........................................................................82
8. Serial Trigger and Decode ..................................................................................84
8.1 I2C Trigger and Serial Decode ................................................................85
8.1.1 Setup for I2C Signals .................................................................85
8.1.2 I2C Trigger ................................................................................86
8.1.3 I2C Serial Decode ......................................................................89
8.2 SPI Trigger and Serial Decode ................................................................91
8.2.1 Setup for SPI Signals .................................................................91
8.2.2 SPI Trigger ................................................................................93
8.2.3 SPI Serial Decode .....................................................................94
8.3 UART Trigger and Serial Decode ............................................................95
8.3.1 Setup for UART Signals..............................................................95
8.3.2 UART Trigger ............................................................................96
8.3.3 UART Serial Decode ..................................................................97
8.4 CAN Trigger and Serial Decode ..............................................................100
8.4.1 Setup for CAN Signals ...............................................................100
8.4.2 CAN Trigger ...............................................................................100
8.4.3 CAN Serial Decode ....................................................................102
8.5 LIN Trigger and Serial Decode ................................................................104
8.5.1 Setup for LIN Signals.................................................................. 104
8.5.2 LIN Trigger ................................................................................104
8.5.3 LIN Serial Decode ......................................................................106
9. Reference Waveform ..........................................................................................109
9.1 Save REF Waveform to Internal Memory ................................................110
9.2 Display REF Waveform ...........................................................................110
9.3 Adjust REF Waveform .............................................................................110
9.4 Clear REF Waveform ..............................................................................111
10. Math ...................................................................................................................112
10.1 Units for Math Waveforms .......................................................................113
10.2 Math Operators .......................................................................................113
10.2.1 Addition or Subtraction ..............................................................113

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10.2.2 Multiplication and Division ..........................................................114
10.2.3 FFT Operation ...........................................................................115
10.2.4 Math Function Operation ...........................................................120
11. Cursors ...............................................................................................................124
11.1 X Cursors .................................................................................................124
11.2 Y Cursors ................................................................................................124
11.3 Make Cursor Measurements ...................................................................124
12. Measure .............................................................................................................126
12.1 Type of Measurements ............................................................................127
12.1.1 Voltage Measurements ..............................................................127
12.1.2 Time Measurements ..................................................................128
12.1.3 Delay Measurements..................................................................129
12.2 Automatic Measurement ..........................................................................129
12.3 All Measurement .....................................................................................131
12.4 Gate Measurement ..................................................................................131
12.5 Clear Measurement Parameters ..............................................................132
13. History ................................................................................................................ 133
14. Search ................................................................................................................ 135
14.1 Setting .....................................................................................................135
14.2 Results ....................................................................................................137
15. Navigate .............................................................................................................138
15.1 Time Navigate .........................................................................................138
15.2 History Frame Navigate ...........................................................................138
15.3 Search Event Navigate ............................................................................138
16. Display ................................................................................................................139
16.1 Display Type ...........................................................................................140
16.2 Color Display............................................................................................ 141
16.3 Persistence .............................................................................................142
16.4 Clear the Display .....................................................................................143
16.5 Grid Type ................................................................................................143
16.6 Intensity ...................................................................................................143
16.7 Grid Brightness .......................................................................................144
16.8 Transparence ..........................................................................................144
17. Save and Recall .................................................................................................145
17.1 Save Type ...............................................................................................146
17.2 Internal Save and Recall .........................................................................147
17.3 External Save and Recall ........................................................................148
17.4 Disk Management ...................................................................................150

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17.4.1 Create a New File or Folder .......................................................150
17.4.2 Delete a File or Folder ...............................................................151
17.4.3 Rename a File or Folder ............................................................151
18. Digital Channels (Option) .................................................................................... 153
18.1 Connect the Digital Probes ......................................................................154
18.2 Acquire Digital Waveform.........................................................................154
18.3 Digital Channels Height ...........................................................................154
18.4 Digital Channels Position .........................................................................156
18.5 Single Digital Channel .............................................................................156
18.6 All Digital Channels .................................................................................156
18.7 Logic Threshold .......................................................................................156
18.8 Digital Bus ...............................................................................................157
18.9 Deskew ...................................................................................................158
18.10 System Setting .........................................................................................158
18.10.1 System Status ...........................................................................158
18.10.2 Update .......................................................................................159
18.11 Remove Device .......................................................................................160
19. System Function Setting ..................................................................................... 161
19.1 View System Status .................................................................................162
19.2 Perform Self Cal ......................................................................................163
19.3 Quick-Cal ................................................................................................164
19.4 Language .................................................................................................164
19.5 Pass/Fail Test .........................................................................................164
19.5.1 Set and Perform Pass/Fail Test .................................................165
19.5.2 Save and Recall Test Mask .......................................................166
19.6 Arbitrary Waveform Generator(Option) ....................................................168
19.6.1 Output ........................................................................................168
19.6.2 Wave .........................................................................................168
19.6.3 Setting .......................................................................................171
19.6.4 Systems .....................................................................................172
19.6.5 Remove Device .........................................................................173
19.7 IO Set ......................................................................................................173
19.7.1 USB Device ................................................................................173
19.7.2 LAN ...........................................................................................174
19.7.3 WLAN (Option) ..........................................................................175
19.8 Web Server .............................................................................................176
19.9 Update Firmware and Configuration ........................................................177
19.10 Do Self-Test ............................................................................................178

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19.10.1 Screen Test ...............................................................................178
19.10.2 Keyboard Test ...........................................................................179
19.10.3 LED Test ...................................................................................180
19.11 Screen Saver ...........................................................................................181
19.12 Reference Position................................................................................... 182
19.13 Power On Line ........................................................................................182
19.14 Option Management ................................................................................182
20. Bode Plot II .........................................................................................................185
20.1 Perform Bode Plot ...................................................................................185
20.2 Setting .....................................................................................................185
20.3 Example ..................................................................................................189
20.3.1 Simple Sweep Operation ........................................................... 189
20.3.2 Vari-level Sweep Operation .......................................................190
21. Factory Setup ......................................................................................................194
22. Troubleshooting ..................................................................................................195
23. Service & Maintenance ....................................................................................... 197
24. Warranty Conditions ...........................................................................................198

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1 Introduction
This user manual includes important safety and installation information related to the
SMO2000X-E series oscilloscopes and includes simple tutorials for basic operation of the
oscilloscope.
The series includes the following models: Model Analog Bandwidth
SMO2202X-E 200 MHz bandwidth, 2-channel, 2 GSa/s Sample rate
SMO2352X-E 350 MHz bandwidth, 2-channel, 2 GSa/s Sample rate

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2 General Safety Summary
Carefully read the following safety precautions to avoid any personal injury or damage to the
instrument and any products connected to it. To avoid potential hazards, please use the
instrument as specified.
Use Proper Power Line
Only the power cord designed for the instrument and authorized by the local country should
be used.
Ground the Instrument
The instrument is grounded through the protective earth conductor of the power line. To avoid
electric shock, please make sure the instrument is grounded correctly before connecting its
input or output terminals.
Connect the Signal Wire Correctly
The potential of the signal wire is equal to the earth, so do not connect the signal wire to a
high voltage.
Look Over All Terminals Ratings
To avoid fire or electric shock, please look over all ratings and read the instructions for the
instrument. Before connecting the instrument, please read the manual carefully to gain more
information about important ratings.
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.
Electrostatic Prevention
Operate in an electrostatic discharge protective area environment to avoid damages induced
by static discharge. Always ground both the internal and external conductors of the cable to
release static before connecting.
Keep Well Ventilation
Inadequate ventilation may cause an increasing in operating temperature, which will
eventually damage the instrument. So, keep well ventilation and inspect the intake and fan
regularly.
Avoid Circuit or Components Exposed
Do not touch exposed contacts or components when the power is on.
Use proper Fuse
Use only the specified fuse.
Do Not Operate Without Covers
Do not operate the instrument with covers or panels removed.

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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 SCIENTIFIC authorized personnel.
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 the device
clean and dry.
Handling Safety
Please handle with care during transportation to avoid damaging buttons, knob interfaces and
other parts on the panels.
Only probe assemblies which meet the manufacturer’s specifications shall be used.
When using probe assemblies, the probe assemblies shall be insulated from the measured
circuits by double or reinforced insulation.
Do not position the equipment so that it is difficult to disconnect an attached device (detachable
plug).
If the equipment is used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.

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2.1 Safety Terms and Symbols
When the following symbols or terms appear on the front or rear panel of the instrument or in
this manual, they indicate special care in terms of safety.
This symbol is used where caution is required. Refer to the accompanying
information or documents in order to protect against personal injury or damage
to the instrument.
This symbol warns of a potential risk of shock hazard.
This symbol is used to denote the measurement ground connection.
This symbol is used to denote a safety ground connection.
This symbol shows that the switch is an On/Standby switch. When it is pressed,
the scope’s state switches between Operation and Standby. This switch does
not disconnect the device's power supply. To completely power off the
scope, the power cord must be unplugged from the AC socket after the
oscilloscope is in the standby state.
This symbol is used to represent an alternating current, or "AC".
CAUTION The "CAUTION" symbol indicates a potential hazard. It calls attention to a
procedure, practice or condition which may be dangerous if not followed. Do
not proceed until its conditions are fully understood and met.
WARNING The "WARNING" symbol indicates a potential hazard. It calls attention to a
procedure, practice or condition which, if not followed, could possibly cause
bodily injury or death. If a WARNING is indicated, do not proceed until the
safety conditions are fully understood and met.
2.2 Working Environment
This instrument is intended for indoor use and should be operated in a clean, dry environment
Temperature
Operating: 0 ℃to +40 ℃
Non-operation: -20 ℃to +60 ℃
Humidity
Operating: 85% RH, 40 ℃, 24 hours
Non-operating: 85% RH, 65 ℃, 24 hours

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Altitude
Operating: ≤3,000 m
Non-operating: ≤15,266 m
Note:Direct sunlight, radiators, and other heat sources should be taken into account when
assessing the ambient temperature.
WARNING: Do not operate the oscilloscope in an explosive atmosphere or wet and
damp conditions.
The design of the instrument has been verified to conform to EN 61010-1 safety standard per
the following limits:
•Installation (overvoltage) Category: II (Mains Supply Connector)
•Degree of Pollution: II
•Degree of Protection: IP20
Note: Installation (Overvoltage) Category II refers to the local distribution level, which is
applicable to equipment connected to the mains supply (AC power source).
Degree of Pollution II refers to a working environment which is dry and non-conductive
pollution occurs. Occasional temporary conductivity caused by condensation is expected.
WARNING: Protect the display touch screen of the scope from excessive impact.
CAUTION: Do not exceed the maximum specified front panel terminal (CH1, CH2,
CH3, CH4, EXT) voltage levels. Refer to Specifications for more details.
CAUTION: Do not connect or disconnect probes or test leads while they are connected
to a voltage source.
2.3 Cooling Requirement s
This instrument relies on forced air cooling with internal fans and ventilation openings. Care
must be taken to avoid restricting the airflow around the apertures (fan holes) at each side of
the scope. To ensure adequate ventilation it is required to leave a 15 cm (6 inch) minimum
gap around the sides of the instrument.
CAUTION: Do not block the ventilation holes located on both sides of the scope.
CAUTION: Do not allow any foreign matter to enter the scope through the ventilation
holes, etc.

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2.4 AC Power
The instrument operates with a single-phase, 100 to 240 Vrms (+/-10%) AC power at 50/60
Hz (+/-5%), or single-phase 100 - 120 Vrms (+/-10%) AC power at 400Hz (+/-5%).
No manual voltage selection is required because the instrument automatically adapts to line
voltage.
Depending on the type and number of options and accessories (probes, PC port plug-in, etc.),
the instrument can consume up to 100 W of power.
Note: The instrument automatically adapts to the AC line input within the following ranges:
Voltage Range: 90 - 264 Vrms 90 - 132 Vrms
Frequency Range: 47 - 63 Hz 380 - 420 Hz
2.5 Power and ground connections
The instrument includes a grounded cord set containing a molded three-terminal polarized
plug and a standard IEC320 (Type C13) connector for making line voltage and safety ground
connection. The AC inlet ground terminal is connected directly to the frame of the instrument.
For adequate protection against electrical shock hazard, the power cord plug must be inserted
into a mating AC outlet containing a safety ground contact. Use only the power cord specified
for this instrument and certified for the country of use.
Warning: Electrical Shock Hazard!
Any interruption of the protective ground conductor within or outside of the scope or
disconnection of the safety ground terminal creates a hazardous situation.
Intentional interruption is prohibited.
The position of the oscilloscope should allow easy access to the socket. To make the
oscilloscope completely power off, unplug the instrument power cord from the AC socket. The
power cord should be unplugged from the AC outlet if the scope is not to be used for an
extended period of time.
CAUTION: The outer shells of the front panel terminals (CH1, CH2, CH3, CH4, EXT)
are connected to the instrument’s chassis and therefore to the safety ground.
2.6 Calibration
The recommended calibration interval is one year. Calibration should be only performed by
qualified personnel.

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2.7 Cleaning
Clean only the exterior of the instrument, using a damp, soft cloth. Do not use chemicals or
abrasive elements. Under no circumstances allow moisture to penetrate the instrument. To
avoid electrical shock, unplug the power cord from the AC outlet before cleaning.
Warning: Electrical Shock Hazard!
No operator serviceable parts inside. Do not remove covers.
Refer servicing to qualified personnel
2.8 Abnormal Conditions
Only operate the instrument for the purposes specified by the manufacturer.
Do not operate the scope if there are any visible signs of damage or if it has been subjected
to severe transport stresses.
If you suspect the scope’s protection has been impaired, disconnect the power cord and
secure the instrument against any unintended operation.
Proper use of the instrument requires reading and understanding all of the instructions and
labels.
Warning: Any use of the scope in a manner not specified by the manufacturer may
impair the instrument’s safety protection. This instrument should not be directly
connected to human subjects or used for patient monitoring.

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3 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.
The contents of this chapter:
•General Inspection
•Appearance and Dimensions
•Prepare for Using
•Front Panel Overview
•Rear Panel Overview
•Front Panel Function Overview
•Help
•User Interface
•Security Lock

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3.1 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. is not responsible for free maintenance/rework or replacement of the unit.
2. Inspect the instrument.
In case of any damage, or defect, or failure, notify us at [e-mail] or
our sales representative.
3. Check the Accessories.
Please check the accessories according to the packing lists. If the accessories are
incomplete or damaged, please contact us at [e-mail] or our sales
representative.

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3.2 Appearance and Dimensions
Figure 1 Front View
Figure 2 Top View

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3.3 Prepare for Using
3.3.1 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 3 Adjust the Supporting Legs
3.3.2 Connect the Power Supply
The power requirements of the oscilloscope are 100-240 Vrms, 50/60Hz or 100-120 Vrms,
440 Hz. Please use the power cord supplied with the instrument to connect the oscilloscope
to the power source.
Figure 4 Connect the Power Supply
3.3.3 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.

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3.3.4 Connect the Probe
Connect the BNC terminal of the probe to a channel BNC connector of the oscilloscope at the
front panel.
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.
3.3.5 Function Inspection
1. Press the Default button on the front panel to restore the instrument to its default
configuration.
2. Connect the ground alligator clip of the probe to the “Ground Terminal” under the probe
compensation signal output terminal.
Compensation Signal
3. Use the probe to connect the input terminal of CH1 of the oscilloscope and the
“Compensation Signal Output Terminal” of the probe.
4. Press the Auto Setup.
5. Observe the waveform on the display. In normal operating conditions, the display should
be a square waveform as shown in the figure below:
Figure 5 Functional Inspection