Scientific SMO1000E User manual

Digital oscilloscope
SMO1000E
User Manual

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/ 0917
Scientific Mes-Technik Pvt.
Ltd
B-14 Industrial Estate,
Pologround
Indore - 452015 (India)
Tel : 0731-
2422330/31/32/33
Fax: 0731
-

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SMO1000E 3/185
Table of Content
Safety Information ................................................................................................................................7
General Safety Summary ................................................................................................................7
Safety Terms and Symbols .............................................................................................................9
Measurement Category .................................................................................................................10
Working Environment ...................................................................................................................11
entilation Requirement ...........................................................................................................11
General Care and Cleaning ........................................................................................................12
Document Overview ............................................................................................................13
Quick Start ...........................................................................................................................16
Appearance and Dimensions ....................................................................................................17
To Prepare the Oscilloscope for Use .........................................................................................18
To Adjust the Supporting Legs..............................................................................18
To Connect to Power Supply ................................................................................19
Power-on Inspection .............................................................................................20
To Connect the Probe ...........................................................................................20
Function Inspection ...............................................................................................21
Probe Compensation ............................................................................................22
Front Panel Overview............................................................................................23
Rear Panel Overview ............................................................................................24
Front Panel Function Overview .................................................................................................25
Horizontal ..............................................................................................................25
Vertical...................................................................................................................26
Trigger ...................................................................................................................27
Run Control ...........................................................................................................28
Universal Knob......................................................................................................29
Menu......................................................................................................................30
Help ...........................................................................................................................................31
User Interface............................................................................................................................32
To Use the Security Lock ...........................................................................................................34
To Set the Vertical System ..................................................................................................35
To Enable the Channel ..............................................................................................................36
To Adjust the ertical Scale ......................................................................................................37
To Adjust the ertical Position ..................................................................................................37
To Specify Channel Coupling .....................................................................................................38
To Specify Bandwidth Limit .......................................................................................................38
To Specify Probe Attenuation Factor ........................................................................................39
To Specify channel Input Impedance ........................................................................................39
To Specify Amplitude Unit ........................................................................................................40
To Specify Deskew.....................................................................................................................40
To Invert a Waveform ...............................................................................................................40

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Set the Horizontal System ...................................................................................................41
Adjust the Horizontal Scale .......................................................................................................42
Adjust Trigger Delay ..................................................................................................................43
Set the Roll mode ......................................................................................................................44
Use the Zoom Function .............................................................................................................45
To Set the Sample System..................................................................................................46
Run Control ...............................................................................................................................47
Overview of Sampling ...............................................................................................................48
Sampling Theory ..........................................................................................................................48
Sample Rate .................................................................................................................................49
Oscilloscope Bandwidth and Sample Rate ............................................................................50
Select Memory Depth ...............................................................................................................51
Select Sampling Mode ...............................................................................................................52
Select Waveform Interpolation Method ...................................................................................53
Select Acquisition Mode ...........................................................................................................54
Normal ............................................................................................................................................55
Peak Detect ...............................................................................................................................56
Average .....................................................................................................................................57
High Resolution .........................................................................................................................58
Change the Horizontal Format ..................................................................................................59
Use Sequence Mode .................................................................................................................60
To Trigger the Oscilloscope.................................................................................................62
Trigger Source ...........................................................................................................................64
Trigger Mode .............................................................................................................................65
Trigger Level ..............................................................................................................................66
Trigger Coupling ........................................................................................................................67
Trigger Holdoff ..........................................................................................................................68
Noise Rejection .........................................................................................................................69
Trigger Type ..............................................................................................................................71
Edge Trigger..................................................................................................................72
Slope Trigger .................................................................................................................73
Pulse Trigger .................................................................................................................75
Video Trigger .................................................................................................................77
Window Trigger .............................................................................................................80
Interval Trigger...............................................................................................................83
DropOut Trigger.............................................................................................................85
Runt Trigger...................................................................................................................87
Pattern Trigger...............................................................................................................89
Serial trigger and decode.....................................................................................................91
I2C Trigger and Serial Decode ...................................................................................................92
Setup for I2C Signals ...................................................................................................................92
I2C Triggering .............................................................................................................................94
I2C Serial Decode .......................................................................................................................98
SPI Triggering and Serial Decode ......................................................................................................100

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Setup for SPI Signals ..........................................................................................100
SPI Triggering .....................................................................................................103
SPI Serial Decode...............................................................................................104
UART/RS232 Triggering and Serial Decode .................................................................................... 106
Setup for UART/RS232 Signals..........................................................................106
UART/RS232 Triggering .................................................................................................. 108
UART/RS232 Serial Decode ............................................................................................ 110
CAN Trigger and Serial Decode .............................................................................................. 112
Setup for CAN Signals ..................................................................................................... 112
CAN Triggering ............................................................................................................... 114
CAN Serial Decode.......................................................................................................... 116
LIN Triggering and Serial Decode ........................................................................................... 118
Setup for LIN Signals ..........................................................................................118
LIN Triggering ................................................................................................................. 119
LIN Serial Decode ........................................................................................................... 121
To Save Reference Waveform ..........................................................................................123
To Save REF Waveform to Internal Memory.......................................................................... 124
To Display REF Waveform ...................................................................................................... 124
To Adjust REF Waveform Display ........................................................................................... 125
To Clear REF Waveform Display ............................................................................................. 125
To Make Math Operation...................................................................................................126
Units for Math Waveforms .................................................................................................... 126
Math Operators ..................................................................................................................... 127
Addition or Subtraction .................................................................................................. 127
Multiplication and Division ............................................................................................ 128
FFT Operation ................................................................................................................. 129
Math Function Operation ...................................................................................................... 132
Differentiate ................................................................................................................... 132
Integrate ......................................................................................................................... 133
Square Root .................................................................................................................... 134
To Make Cursors Measurements ......................................................................................135
X Cursors ................................................................................................................................ 135
Y Cursors ................................................................................................................................ 135
To Make Cursor Measurements ............................................................................................. 136
To Make Measurements ................................................................................................................ 137
Type of Measurement ............................................................................................................ 138
oltage Measurements .................................................................................................. 138
Time Measurements ...................................................................................................... 140
Delay Measurements ..................................................................................................... 140
To Make Automatic Measurement ........................................................................................ 142
To Clear Measurement Parameters ....................................................................................... 144
To Make All Measurement ..................................................................................................... 144
Display Setting ................................................................................................................................ 145
To Set Display Type ................................................................................................................ 146
To Set Color Display ............................................................................................................... 147
To Set and Clear Persistence .................................................................................................. 147

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To clear the display .............................................................................................................. 148
To Select Grid Type .............................................................................................................. 149
To Adjust Waveform Intensity ............................................................................................. 149
To Adjust Grid Brightness ..................................................................................................... 150
To Adjust Transparence ....................................................................................................... 150
Save and Recall ............................................................................................................................ 151
Save Type ............................................................................................................................. 152
Internal Save and Recall ....................................................................................................... 154
External save and recall ....................................................................................................... 155
Disk Management ................................................................................................................ 158
To Create a New File or Folder ..................................................................................... 159
To delete a file or folder ............................................................................................... 159
System Function Setting .............................................................................................................. 161
To iew the System Status ................................................................................................... 162
To Do Self Calibration ........................................................................................................... 163
To Enable or Disable the Sound ........................................................................................... 164
To Specify the Language ...................................................................................................... 164
To Do Pass/Fail Test ............................................................................................................. 165
To Set and Perform Pass/Fail Test ............................................................................... 166
To Save and Recall Test Mask ...................................................................................... 167
IO Set .................................................................................................................................... 169
To Set the USB Device .................................................................................................. 169
To Set the LAN .............................................................................................................. 170
To Set Aux Output ........................................................................................................ 171
To Update Firmware and Configuration .............................................................................. 172
Do Self Test .......................................................................................................................... 173
Screen Test ................................................................................................................... 173
Keyboard Test .............................................................................................................. 174
LED Test ........................................................................................................................ 175
To specify Screen Saver Time ............................................................................................... 176
To Use the History Function ......................................................................................................... 177
Factory Setup ............................................................................................................................... 179
Troubleshooting ........................................................................................................................... 183
Service and Support ..................................................................................................................... 185

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Safety Information
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.
Use proper Fuse
Use only the specified fuse.

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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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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
Powe
r
Switc
h

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Measurement Category
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.
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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Working Environment
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.
Altitude
Operating: less than 3 Km
Non-operation: 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).
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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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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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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Content of Figure
Figure 1 Front iew ...................................................................................................................17
Figure 2 Top iew ......................................................................................................................17
Figure 3 Adjust the Supporting Legs .........................................................................................18
Figure 4 To Connect to Power Supply .......................................................................................19
Figure 5 Function Inspection .....................................................................................................21
Figure 6 Front Panel Overview ..................................................................................................23
Figure 7 Rear panel Overview ................................................................................................ 24
Figure 8 Help Message ........................................................................................................... 31
Figure 9 User Interface ........................................................................................................... 32
Figure 10 To Use the Security Lock ........................................................................................ 34
Figure 11 Display Type Set to Dots ......................................................................................... 53
Figure 12 x Interpolation ........................................................................................................ 54
Figure 13 Sinx/x Interpolation ................................................................................................ 54
Figure 14 Acquisition System ................................................................................................. 55
Figure 15 Pulse With 0.1% Duty, Normal Mode .................................................................... 56
Figure 16 Pulse With 0.1% Duty, Peak Detect Mode ............................................................. 56
Figure 17 With Random Noise, Normal Mode ....................................................................... 57
Figure 18 With Random Noise, Average Mode ...................................................................... 58
Figure 19 SEQUENCE Function Menu..................................................................................... 60
Figure 20 HISTORY Function Menu ........................................................................................ 60
Figure 21 Turn off the Noise Reject ....................................................................................... 69
Figure 22 Turn on the Noise Reject ........................................................................................ 70
Figure 23 Edge Trigger ........................................................................................................... 72
Figure 24 Slope Trigger .......................................................................................................... 74
Figure 25 Pulse Trigger ........................................................................................................... 76
Figure 26 ideo Trigger .......................................................................................................... 79
Figure 27 Absolute Window Trigger ...................................................................................... 81
Figure 28 Relative Window Trigger ........................................................................................ 82
Figure 29 Interval Trigger ........................................................................................................ 84
Figure 30 Edge DropOut Trigger ............................................................................................. 86
Figure 31 State DropOut Trigger ............................................................................................ 87
Figure 32 Runt Trigger ............................................................................................................. 88
Figure 33 Pattern Trigger ........................................................................................................ 90
Figure 34 I2C SINGAL Menu ................................................................................................... 92
Figure 35 I2C Decode Menu ................................................................................................... 98
Figure 36 SINGAL Menu ......................................................................................................... 100
Figure 37 CLK Menu ................................................................................................................ 101
Figure 38 MISO Menu ............................................................................................................. 101
Figure 39 MOSI Menu ............................................................................................................. 101
Figure 40 SPI TRIG SET Menu ................................................................................................. 103
Figure 41 UART SIGNAL Menu ............................................................................................... 106
Figure 42 Reference Waveform ........................................................................................... 125
Figure 43 FFT Waveform In Split Mode ................................................................................ 131
Figure 44 Differential Function Operation ........................................................................... 132

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Figure 45 Integral without Offset ......................................................................................... 133
Figure 46 Integral with Offset .............................................................................................. 134
Figure 47 Square Root .......................................................................................................... 135
Figure 48 Measure Pulse Width ........................................................................................... 136
Figure 49 oltage Measurements ........................................................................................ 138
Figure 50 Overshoot ............................................................................................................. 139
Figure 51 Preshoot ............................................................................................................... 139
Figure 52 Time Measurements ............................................................................................ 140
Figure 53 Select the Measurement Parameter .................................................................... 142
Figure 54 Added the Measurement ..................................................................................... 143
Figure 55 All Parameters Measurement .............................................................................. 144
Figure 56 ectors Display ..................................................................................................... 146
Figure 57 Dots Display .......................................................................................................... 146
Figure 58 Color Temperature ............................................................................................... 147
Figure 59 Persist Set to Infinite ............................................................................................ 148
Figure 60 SA E/RECALL File System ..................................................................................... 155
Figure 61 Select Save Location ............................................................................................. 156
Figure 62 File Name Dialogue .............................................................................................. 156
Figure 63 Input Keyboard ..................................................................................................... 159
Figure 64 System Status ....................................................................................................... 162
Figure 65 Do Self Cal ............................................................................................................ 163
Figure 66 Pass/Fail Test ........................................................................................................ 165
Figure 67 LAN Setting Interface ........................................................................................... 170
Figure 68 Screen Test ........................................................................................................... 173
Figure 69 Keyboard Test ...................................................................................................... 174
Figure 70 LED Test ................................................................................................................ 175
Figure 71 Screen Saver Interface ......................................................................................... 176
Figure 72 History .................................................................................................................. 177

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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
 Back Panel Function Overview
 User Interface
 To Use the Security Lock

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Appearance and Dimensions
Figure 1 Front View
Figure 2 Top View

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To Prepare the Oscilloscope for Use
To Adjust the Supporting Legs
Adjust the supporting legs properly to use them as stands to tilt the oscilloscope upwards
for stable placement of the oscilloscope as well as better operation and observation.
Figure 3 Adjust the Supporting Legs

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To 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.
Power
socket
Figure 4 To Connect to Power Supply

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Power-on Inspection
When the oscilloscope is energized, press the power key at the lower-left corner of the
front panel to start the 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.
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.