Scientific SMO1000U User manual

Digital Oscilloscope
SMO1000E/SMO1000U
User Manual

Scientific
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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/ 0523
Scientific Mes-Technik Pvt. Ltd
B-14 Industrial Estate, Pologround
Indore - 452015 (India)
Tel : [phone]/33
Email : [e-mail]
Website : www.scientificindia.com

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Table of Content
1. Safety Information................................................................................................... 9
1.1 General Safety Summary.............................................................................. 9
1.2 Safety Terms and Symbols ........................................................................... 11
1.3 Measurement Category................................................................................. 12
1.4 Working Environment ................................................................................... 13
1.5 Ventilation Requirement................................................................................ 14
1.6 General Care and Cleaning .......................................................................... 14
2. Document Overview .............................................................................................. 15
3. Quick Start...................................................................................................................... 16
3.1 Appearance and Dimensions ........................................................................ 17
3.2 Prepare the Oscilloscope for Use.................................................................. 18
3.2.1 Adjust the Supporting Legs ................................................................. 19
3.2.2 Connect to Power Supply.................................................................... 19
3.2.3 Power-on Inspection............................................................................ 20
3.2.4 Connect the Probe .............................................................................. 20
3.2.5 Function Inspection ............................................................................. 20
3.2.6 Probe Compensation........................................................................... 21
3.3 Front Panel Overview..................................................................................... 23
3.4 Rear Panel Overview ..................................................................................... 26
3.5 Front Panel Function Overview ...................................................................... 29
3.5.1 Horizontal............................................................................................ 29
3.5.2 Vertical ................................................................................................ 30
3.5.3 Trigger................................................................................................. 31
3.5.4 Run Control......................................................................................... 32
3.5.5 Universal Knob.................................................................................... 33
3.5.6 Menu................................................................................................... 34
3.6 Help .............................................................................................................. 36
3.7 User Interface ............................................................................................... 37
3.8 Security Lock ................................................................................................ 39
4. Vertical System...................................................................................................... 40
4.1 Enable the Channel ...................................................................................... 41
4.2 Adjust Vertical Scale ..................................................................................... 42
4.3 Adjust Vertical Position ................................................................................. 43
4.4 Channel Coupling ......................................................................................... 43
4.5 Bandwidth Limit............................................................................................. 44

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4.6 Probe Attenuation Factor .............................................................................. 44
4.7 Amplitude Unit .............................................................................................. 45
4.8 Deskew......................................................................................................... 45
4.9 Invert a Waveform......................................................................................... 45
4.10 Trace Visible/Hidden................................................................................... 45
4.11 Label........................................................................................................... 46
5. Horizontal System ................................................................................................. 47
5.1 Horizontal Scale............................................................................................ 48
5.2 Horizontal Delay............................................................................................ 48
5.3 Roll mode...................................................................................................... 48
5.4 Zoom Function.............................................................................................. 49
6. Sample System ..................................................................................................... 51
6.1 Run Control................................................................................................... 52
6.2 Overview of Sampling ................................................................................... 52
6.2.1 Sampling Theory .................................................................................. 52
6.2.2 Sample Rate ........................................................................................ 53
6.2.3 Oscilloscope Bandwidth and Sample Rate ........................................... 54
6.3 Memory Depth .............................................................................................. 55
6.4 Sampling Mode............................................................................................. 56
6.5 Waveform Interpolation Method .................................................................... 56
6.6 Acquisition Mode........................................................................................... 58
6.6.1 Normal ................................................................................................. 58
6.6.2 Peak Detect.......................................................................................... 59
6.6.3 Average................................................................................................ 60
6.6.4 Eres...................................................................................................... 61
6.7 Horizontal Format ......................................................................................... 62
6.8 Use Sequence Mode .................................................................................... 63
7. Trigger .................................................................................................................. 65
7.1 Trigger Source .............................................................................................. 67
7.2 Trigger Mode ................................................................................................ 68
7.3 Trigger Level................................................................................................. 69
7.4 Trigger Coupling ........................................................................................... 70
7.5 Trigger Holdoff .............................................................................................. 71
7.6 Noise Rejection............................................................................................. 72
7.7 Trigger Type ................................................................................................. 74
7.7.1 Edge Trigger ........................................................................................ 75
7.7.2 Slope Trigger........................................................................................ 76

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7.7.3 Pulse Trigger........................................................................................ 78
7.7.4 Video Trigger........................................................................................ 80
7.7.5 Window Trigger .................................................................................... 83
7.7.6 Interval Trigger ..................................................................................... 86
7.7.7 DropOut Trigger ................................................................................... 88
7.7.8 Runt Trigger ......................................................................................... 91
7.7.9 Pattern Trigger ..................................................................................... 93
8. Serial trigger and decode....................................................................................... 95
8.1 I2C Trigger and Serial Decode...................................................................... 96
8.1.1 Setup for I2C Signals............................................................................ 96
8.1.2 I2C Triggering ...................................................................................... 97
8.1.3 I2C Serial Decode ............................................................................. 100
8.2 SPI Triggering and Serial Decode............................................................... 102
8.2.1 Setup for SPI Signals ........................................................................ 102
8.2.2 SPI Triggering ................................................................................... 105
8.2.3 SPI Serial Decode............................................................................. 106
8.3 UART Trigger and Serial Decode................................................................ 108
8.3.1 Setup for UART Signals .................................................................... 108
8.3.2 UART Triggering ............................................................................... 109
8.3.3 UART Serial Decode .........................................................................110
8.4 CAN Trigger and Serial Decode.................................................................. 113
8.4.1 Setup for CAN Signals ...................................................................... 113
8.4.2 CAN Triggering ................................................................................. 114
8.4.3 CAN Serial Decode ........................................................................... 115
8.5 LIN Triggering and Serial Decode ............................................................... 117
8.5.1 Setup for LIN Signals ........................................................................ 117
8.5.2 LIN Triggering ................................................................................... 117
8.5.3 LIN Serial Decode ............................................................................. 119
9. Reference Waveform........................................................................................... 122
9.1 Save REF Waveform to Internal Memory.................................................... 123
9.2 Display REF Waveform............................................................................... 123
9.3 Adjust REF Waveform ................................................................................ 124
9.4 Clear REF Waveform ................................................................................. 124
10 Math Function..................................................................................................... 125
10.1 Units for Math Waveforms......................................................................... 126
10.2 Math Operators......................................................................................... 127
10.2.1 Addition or Subtraction .................................................................... 127

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10.2.2 Multiplication and Division ............................................................... 128
10.2.3 FFT Operation................................................................................. 129
10.2.4 Math Function Operation................................................................. 134
11. Cursors Measurements...................................................................................... 138
11.1 X Cursors.................................................................................................. 138
11.2 Y Cursors.................................................................................................. 138
11.3 Make Cursor Measurements..................................................................... 139
12. Measure ............................................................................................................ 140
12.1 Type of Measurement ............................................................................... 141
12.1.1 Voltage Measurements................................................................... 141
12.1.2 Time Measurements....................................................................... 143
12.1.3 Delay Measurements ..................................................................... 144
12.2 Automatic Measurement ........................................................................... 145
12.3 Clear Measurement Parameters ............................................................... 147
12.4 Make All Measurement ............................................................................. 148
12.5 Gate Measurement ................................................................................... 149
13. Display Setting................................................................................................... 150
13.1 Display Type ............................................................................................. 151
13.2 Color Display ............................................................................................ 152
13.3 Persistence ............................................................................................... 153
13.4 Clear Display ............................................................................................ 154
13.5 Grid Type.................................................................................................. 154
13.6 Waveform Intensity ................................................................................... 154
13.7 Grid Brightness ......................................................................................... 155
13.8 Transparence............................................................................................ 155
14. Save and Recall ................................................................................................ 156
14.1 Save Type................................................................................................. 157
14.2 Internal Save and Recall ........................................................................... 158
14.3 External save and recall............................................................................ 160
14.4 Disk Management ..................................................................................... 163
14.4.1 Create a New File or Folder ............................................................ 164
14.4.2 Delete a file or folder ....................................................................... 165
14.4.3 Rename a file or folder .................................................................... 165
15. Digital Channels (Option)................................................................................... 166
15.1 Connect the Digital Probes........................................................................ 167
15.2 Acquire Digital Waveform.......................................................................... 168
15.3 Digital Channels Height............................................................................. 168

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15.4 Digital Channels Position .......................................................................... 169
15.5 Single Digital Channel............................................................................... 169
15.6 All Digital Channels................................................................................... 170
15.7 Logic Threshold ........................................................................................ 170
15.8 Digital Bus................................................................................................. 171
15.9 Deskew..................................................................................................... 172
15.10 System Setting........................................................................................ 173
15.11 Remove Device....................................................................................... 174
16. System Function Setting.................................................................................... 175
16.1 View the System Status ............................................................................ 176
16.2 Do Self Calibration .................................................................................... 177
16.3 Quick-Cal.................................................................................................. 178
16.4 Enable or Disable the Sound..................................................................... 178
16.5 Specify the Language ............................................................................... 178
16.6 Pass/Fail Test ........................................................................................... 179
16.6.1 Set and Perform Pass/Fail Test...................................................... 179
16.6.2 Save and Recall Test Mask............................................................ 181
16.7 Arbitrary Waveform generator (Option) ..................................................... 183
16.7.1 Output ............................................................................................. 184
16.7.2 Wave............................................................................................... 184
16.7.3 Setting............................................................................................. 186
16.7.4 System ............................................................................................ 188
16.7.5 Remove Device............................................................................... 189
16.8 IO Set ....................................................................................................... 190
16.8.1 USB Device..................................................................................... 190
16.8.2 LAN................................................................................................. 190
16.8.3 WLAN.............................................................................................. 191
16.9 Webserver ................................................................................................ 192
16.9.1 Set password .................................................................................. 193
16.9.2 Web Browser................................................................................... 193
16.10 Counter................................................................................................... 195
16.11 Data Logger ............................................................................................ 198
16.11.1 Sample Logger.............................................................................. 198
16.11.2 Measure Logger ............................................................................ 202
16.12 Update Firmware and Configuration........................................................ 207
16.13 Do Self Test ............................................................................................ 208
16.13.1 Screen Test................................................................................... 208

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16.13.2 Keyboard Test............................................................................... 209
16.13.3 LED Test ....................................................................................... 210
16.14 Screen Saver Time ................................................................................. 211
16.15 Date/Time ............................................................................................... 212
16.15.1 Set Date/Time ............................................................................... 212
16.15.2 Set Time zone ............................................................................... 213
16.15.3 Set NTP ........................................................................................ 213
16.16 Reference Position.................................................................................. 215
16.17 Power On Line ........................................................................................ 215
16.18 Option Management................................................................................ 216
17. Bode Plot II........................................................................................................ 218
17.1 Perform Bode Plot..................................................................................... 218
17.2 Setting ...................................................................................................... 218
17.3 Example.................................................................................................... 222
17.3.1 Simple Sweep Operation................................................................. 222
17.3.2 Vari-Level Sweep operation ........................................................... 224
18. Navigate ............................................................................................................ 227
18.1 Time Navigate........................................................................................... 227
18.2 History Frame Navigate ............................................................................ 227
18.3 Search Event Navigate ............................................................................. 227
19. History Function................................................................................................. 228
20. Factory Setup .................................................................................................... 230
21. Troubleshooting................................................................................................. 231
22. Dispatch procedure for Service, E-Waste Management & Warranty .................. 233

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1. Safety Information
1.1 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 local country could 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 sign instruction of the
instrument. Before connecting the instrument, please read the manual carefully to gain more
information about the 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 increasing of 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.

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Use proper Fuse
Use only the specified fuse.
Do Not Operate Without Covers
Do not operate the instrument with covers or panels removed.
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 the manufacturer 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 device clean
and dry.
Handling Safety
Please handle with care during transportation to avoid damages to buttons, knob interfaces
and other parts on the panels.

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1.2 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 Indicates direct injuries or hazards that may happen.
WARNING Indicates potential injuries or hazards that may happen.
CAUTION Indicates potential damages to the instrument or other property that may happen.
Symbols on the product. These symbols may appear on the product:
Hazardous
Voltage
protective
Earth
Terminal
Warning Test
Ground
Power
Switch

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1.3 Measurement Category
1.3.1 Measurement Categories
The oscilloscopes can make measurements in measurement category I.
WARNING
This oscilloscope can only be used for measurements within its specified
measurement categories.
1.3.2 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 over current
protection devices and ripple control units.

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1.4 Working Environment
1.4.1 Temperature
Operating: 10 ℃ to +40 ℃
Non-operation:-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.
1.4.2 Altitude
Operating: less than 3 Km
Non-operation: less than 15 Km
1.4.3 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.
1.4.4 Installation (overvoltage) Category Definitions
Installation (overvoltage) category I refers to signal level which is applicable to equipment
measurement terminals connected to the source circuit. In these terminals, precautions are
done to limit the transient voltage to the corresponding low level.
Installation (overvoltage) category II refers to the local power distribution level which is
applicable to equipment connected to the AC line (AC power).

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1.5 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 besides 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.
1.5.1 General Care and Cleaning
Care
Do not store or leave the instrument in direct sunshine for long periods of time.
WARNING
To avoid damages to the instrument or probe, please do not leave them in fog,
liquid, or solvent.
Cleaning
Please perform the following steps to clean the instrument and probe regularly according to its
operating conditions.
1. Disconnect the instrument from all power sources, and then clean it with a soft wet cloth.
2. Clean the loose dust on the outside of the instrument and probe with a soft cloth. When
cleaning the LCD, take care to avoid scarifying it.
WARNING
To avoid damages to the surface of the instrument and probe, please do not
use any corrosive liquid or chemical cleanser.
WARNING
Make sure that the instrument is completely dry before restarting it to avoid
short circuits or personal injuries.

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2. Document Overview
This manual introduces how to use the digital oscilloscope in details.
Quick Start Provide information about preparations before using
the instrument and a brief introduction of the
instrument.
To Set the Vertical System Introduce the functions of the vertical system of the
oscilloscope.
To Set the Horizontal System Introduce the functions of the horizontal system of the
oscilloscope.
To Set the Sample System Introduce the functions of the sample system of the
oscilloscope.
To Trigger the Oscilloscope Introduce the trigger mode, trigger coupling,
trigger hold off, external trigger and various
trigger types of the oscilloscope.
Serial Trigger Introduce how to trigger the input signal.
To Save Reference Waveform Introduce how to save and display REF waveform.
To Make Math Operation Introduce the math operation function of the
oscilloscope.
To Make Cursor Measurements Introduce how to use cursors to make measurements.
To Make Measurements Introduce how to use measure function to measure the
waveform parameters.
Display Setting Introduce how to set the display of the oscilloscope.
Save and Recall Introduce how to save and recall the measurement
result and the setting of the oscilloscope.
System Setting Introduce how to set the system setup.
Default Introduce the Default setup of the oscilloscope
Troubleshooting Introduce how to deal with common failures of the
oscilloscope.

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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:
 Appearance and Dimensions
 To Prepare the Oscilloscope for Use
 Front Panel Overview
 Rear Panel Overview
 Front Panel Function Overview
 Help
 User Interface
 To Use the Security Lock

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3.1 Appearance and Dimensions
Figure 1 Front View (2-channel scope)
Figure 2 Top View (2-channel scope)

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Figure 3 Front View (4-Channel Scope)
Figure 4 Top View (4-Channel Scope)

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3.2 Prepare Oscilloscope for Use
3.2.1 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 5 Adjust the Supporting Legs
3.2.2 Connect to Power Supply
The power requirements of the oscilloscope are 100-240 V, 50/60/440 Hz. Please use the
power cord supplied with the accessories to connect the oscilloscope to the power source.
2-Channel Scope 4-Channel Scope
Figure 6 To Connect to Power Supply

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3.2.3 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.
3.2.4 To Connect the Probe
The manufacturer provides passive probes for the oscilloscope. For detailed technical
information of the probes, please refer to the corresponding Probe User’s Guide.
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.
3.2.5 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.
2-Channel Scope
4-Channel Scope
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 condition, the display should be a
square waveform as shown in the figure below: