SIGLENT SDS1000X-E Series User manual

SIGLENT
SDS1000X-E Service Manual I
SDS1000X-E Series
Digital Oscilloscope
Service Manual
SM0101E-E01A

Copyright and Declaration
Copyright
SIGLENT TECHNOLOGIES CO., LTD. All Rights Reserved.
Trademark Information
SIGLENT is the registered trademark of SIGLENT TECHNOLOGIES CO., LTD.
Declaration
SIGLENT products are protected by patent law in and outside of P.R.C.
SIGLENT reserves the right to modify or change parts of or all the specifications or
pricing policies at company‟s sole decision.
Information in this publication replaces all previously corresponding material.
Any way of copying, extracting or translating the contents of this manual is not allowed
without the permission of SIGLENT.
Product Certification
SIGLENT guarantees this product conforms to the national and industrial stands in
China and other international stands conformance certification is in progress.
Contact Us
If you have any problem or requirement when using our products, please contact
SIGLENTTECHNOLOGIES CO., LTD
Add：3//F, Bldg No.4, Antongda Industrial Zone, 3rd Liuxian Road, Bao‟an District,
Shenzhen, 518101,P.R.China
Tel：[phone]
E-mail：[e-mail]
http://www.siglent.com

General Safety Summary
Review the following safety precautions to avoid personal injuries and
prevent damages to this product or any products connected to it. To avoid
potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or Personal Injuries
Use Proper Power Cord. Use only the power cord specified for this product
and approved by your local governing agencies.
Avoid Electric Shock. To avoid injuries or potential loss of life, do not
connect or disconnect probes or test leads while they are connected to a
voltage source.
Ground the Product. This product is grounded through the protective
ground conductor of the power line. To avoid electric shock, the grounding
conductor must be connected to the earth ground. Make sure the instrument
is grounded correctly before connecting its input or output terminals.
Connect the Probe Properly. Do not connect the probe ground lead to a
high voltage since it has the isobaric electric potential as ground.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all
ratings and markings on the instrument and check your manual for more
information about ratings before connecting.
Use Proper Fuse. Use only the specified fuse.
Do Not Operate Without Covers. Do not operate this instrument with
covers or panels removed.
Avoid Circuit or Wire Exposed. Do not touch exposed junctions and
components when the unit is powered.

Do Not Operate With Suspected Problems. If you suspect damage has
occurred to this instrument, have it inspected by qualified service personnel
before further operation. Any maintenance, adjustment or replacement,
especially to the circuits or accessories should be performed by SIGLENT
authorized personnel.
Keep Product Surfaces Clean and Dry.
Do Not Operate in Wet/Damp Conditions. To avoid electric shock, do not
operate the instrument in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere. To avoid injuries or fire
hazards, do not operate in an explosive atmosphere.
Safety Terms and Symbols
Terms on the Product. These terms may appear on the product:
DANGER: Indicates an injury or hazard that may immediately happen.
WARNING: Indicates an injury or hazard may be potentially accessible.
CAUTION: Indicates damage to the instrument or other property may occur.
Symbols on the Product. These symbols may appear on the product:

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Contents
General Safety Summary ................................................................................................................III
General Features ...............................................................................................................................7
Prepare Information ........................................................................................................................10
Functional checking...............................................................................................................10
Power-on Inspection .....................................................................................................10
Probe Compensation.....................................................................................................12
Auto Setup ....................................................................................................................14
Self Calibration.............................................................................................................15
Interface Test..........................................................................................................................16
USB Host Test...............................................................................................................16
USB Device Test...........................................................................................................17
LAN Port Test...............................................................................................................19
Pass/Fail out Test ..........................................................................................................21
Performance Test.............................................................................................................................23
To Verify DC Gain Accuracy.................................................................................................28
To Verify OffsetAccuracy......................................................................................................31
To Verify Time Base Accuracy ..............................................................................................33
To Verify Trigger Delay.........................................................................................................34
To Verify Ext Trigger Delay...................................................................................................35
To Verify Ext Trigger Level...................................................................................................36
To Verify Noise Floor ............................................................................................................37
To Verify Bandwidth..............................................................................................................39
To Verify Bandwidth Limit....................................................................................................41
To Verify Trigger Sensitivity..................................................................................................43
To Verify Input Impedance.....................................................................................................45
Disassembly Procedures .................................................................................................................46
Safety Consideration and Cautions........................................................................................46
Tools Lists..............................................................................................................................47
Disassembly Procedures ........................................................................................................48
2-Channel Module ........................................................................................................48
4-Channel Module ........................................................................................................57
Solving General Problems ..............................................................................................................66
If there is no display...............................................................................................................66
If the display stuck at logo graph...........................................................................................66
If there is no trace display......................................................................................................66
If the baseline trace drift out of specification.........................................................................67
If there is an unexpected trace when no input connected to channel input............................67

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Troubleshooting ..............................................................................................................................68
Safety Consideration and Cautions........................................................................................68
Required equipment...............................................................................................................69
Troubleshooting Flowchart....................................................................................................69
For 2-Channel Module...........................................................................................................71
Main Board Drawing....................................................................................................71
To Check the Power Supply Module ............................................................................71
To Check the Main Board.............................................................................................72
To Check the Processor System....................................................................................73
Check the clock.............................................................................................................73
To Check the Acquisition System.................................................................................74
To Check Other Power Supplies...................................................................................75
To Check the LCD........................................................................................................76
For 4-Channel Module...........................................................................................................78
Main Board Drawings...................................................................................................78
To Check the Power Supply Module ............................................................................78
To Check the Main Board.............................................................................................79
To Check the Processor System....................................................................................80
To Check the Acquisition System.................................................................................81
To Check Other Power Supplies...................................................................................82
To Check the LCD........................................................................................................83

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General Features
SIGLENT‟s new SDS1000X-E Super Phosphor Oscilloscopes feature two
channel and four channel models. The two channel model is available with a
200 MHz analog bandwidth (model SDS1202X-E), a single ADC with a 1
GSa/s maximum sample rate, and a single memory module with 14Mpts of
sample memory. The four channel scope is available in 100 and 200 MHz
models and incorporates two 1 GSa/sADCs and two 14Mpts memory modules.
When all channels are enabled, each channel has sample rate of 500MSa/s
and a standard record length of 7Mpts. When only a single channel per ADC is
active, the maximum sample rate is 1GSa/s and the maximum record length
is14Mpts. For ease-of-use, the most commonly used functions can be
accessed with its user- friendly front panel design.
The SDS1000X -E series employs a new generation of SPO (Super -Phosphor
Oscilloscope) technology that provides excellent signal fidelity and
performance. The system noise is also lower than similar products in the
industry. It comes with a minimum vertical input range of 500 uV/div, an
innovative digital trigger system with high sensitivity and low jitter, and a
waveform capture rate of 400,000 frames/sec (sequence mode). The
SDS1000X -E also employs a 256 -level intensity grading display function and
a color temperature display mode not found in other models in this class.
SIGLENT‟s latest oscilloscope offering supports multiple powerful triggering
modes including serial bus triggering. Serial bus decoding for
IIC,SPI,UART,CAN,LIN bus types is included. The X-E models also include
History waveform recording, and sequential triggering that enable extended
waveform recording and analysis. Another powerful addition is the new
1million point FFT math function that gives the SDS1000X-E very high

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frequency resolution when observing signal spectra. The new digital design
also includes a hardware co-processor that delivers measurements quickly
and accurately without slowing acquisition and front-panel response. The
features and performance of SIGLENT‟s new SDS1000X -E cannot be
matched anywhere else in this price class.
The four channel series includes even more functions, including: searching
and navigating, on-screen Bode plot, 16 digital channels(Option), an external
USB powered 25 MHz AWG module(Option), a USB WIFI adapter(Option),
and an embedded application that allows remote control via web browser.
Table 1 General features
Model
SDS1104X-E
SDS1204X -E
SDS1202X -E
Bandwidth
100 MHz
200 MHz
SamplingRate(Max.)
Two channel series have a single 1GSa/s ADC, four
channel series have two 1GSa/s ADCs. When all
channels are enabled, each channel has a maximum
sample rate of 500 MSa/s. When a single channel per
pair is active, , that channel has sample rate of 1
GSa/s
Channels
4 (four channel series)
2+EXT (two channel series)
Memory
Depth(Max.)
7Mpts/CH(not interleave mode);
14Mpts/CH(interleave mode)
100MHz, 200MHz bandwidth models
Two channel series have one 1GSa/s ADC, four channel series have two
1GSa/s ADCs. When all channels are enabled, each channel has a
maximum sample rate of 500 MSa/s. When a single channel per ADC is
active, it has sample rate of 1 GSa/s
The newest generation of SPO technology
Waveform capture rate up to 100,000 wfm/s (normal mode), and 400,000
wfm/s (sequence mode)
Supports 256-level intensity grading and color display modes
Record length up to 14 Mpts
Digital trigger system
Intelligent trigger: Edge, Slope, Pulse Width, Window, Runt, Interval, Time

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out (Dropout), Pattern
Serial bus triggering and decoding (Standard), supports protocols IIC, SPI,
UART, RS232,CAN,LIN
Video trigger, supports HDTV
Low noise floor with voltage scales from 500μV/div to 10V/div
10 types of one-button shortcuts, supports Auto Setup, Default, Cursors,
Measure, Roll, History, Display/Persist, Clear Sweep, Zoom and Print
Segmented acquisition (Sequence) mode, divides the maximum record
length into multiple segments(up to 80,000), according to trigger conditions
set by the user, with a very small dead time segment to capture the
qualifying event.
History waveform record (History) function(maximum recorded waveform
length is 80,000 frames)
Automatic measurement function for 38 parameters as well as
Measurement Statistics, Zoom, Gating, Math, History and Reference
functions
1Mpts FFT
Math and measurement functions use all sampled data points (up to
14Mpts)
Math functions (FFT, addition, subtraction, multiplication,division,
integration, differential, square root)
Preset key can be customized for user settings or factory “defaults”
Security Erase mode
High Speed hardware based Pass/ Fail function
16 Digital channels (MSO) (four channel series only, option)
Bode plot(four channel series only)
Search and navigate(four channel series only)
USB AWG module(four channel series only, option)
USB WIFI adapter(four channel series only, option)
Web Browser based control(four channel series only)
Large 7 inch TFT -LCD display with 800 * 480 resolution
Multiple interface types: USB Host, USB Device (USB -TMC), LAN Pass /
Fail, Trigger Out
Supports SCPI remote control commands
Supports Multi-language display and embedded online help

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Prepare Information
Before initiating performance verification or any adjustments, it is
recommended the user follow these procedures. The following topics are
discussed in this chapter.
How to perform functional checks
How to operate four standard interface tests
How to use self-calibration routine
How to recall factory Default settings
For more detailed information about oscilloscope operation, please refer to the
Quick Start Guide.
Functional checking
The functional checking details four types of checks used to determine if the
oscilloscope is operating properly.
Power-on Inspection
The power requirements of the oscilloscope are 100-240 V, 50/60Hz or
100-120 V, 400Hz. Please use the power cord supplied with the accessories to
connect the oscilloscope to the power source.

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2-channel scope 4-channel scope
Figure 1 Connect power cord
Note: To avoid electric shock, make sure that the instrument is
correctly grounded to the earth before connecting AC power.
Press the power-on button located at the lower left corner of the front panel
and note that several oscilloscope keys will be lighted for about 6 seconds
simultaneously, until the boot screen appears. The oscilloscope will then begin
to perform its power-on tests automatically, after which the Default button can
be pressed in order to recall the factory default settings.
Power
socket
Power
socket

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Probe Compensation
It is necessary to compensate the probe at first use so as to properly match the
probe to the oscilloscope‟s input channel. Non-compensated or poorly
compensated probes may cause measurement inaccuracies or errors. The
probe compensation steps are as follows:
1. Set the attenuation switch on the probe to 10X.
Figure 2 Set the attenuation switch
2. Connect the alligator clip of the probe to the Ground Terminal on the front
panel, and then use the probe to connect CH1 BNC input connector to the
Compensation Signal Output Terminal.
2-channel scope
4-channel scope
3. Press Auto Setup.
4. Observe waveform on the screen. The displaying should be a square
waveform as shown in the figure below:
Ground Terminal
Compensation Signal Output Terminal
Ground Terminal
Compensation Signal Output Terminal

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Under Compensated Over
Compensated Correctly Compensated
5. If the waveform does not show as “compensated correctly”, use a
nonmetallic screwdriver to adjust the low-frequency compensation
adjustment hole on the probe until the waveform displays correctly.

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Auto Setup
Press the Auto Setup key to enable the waveform auto setting function. The
oscilloscope will automatically adjust the horizontal time base, vertical scale
and trigger mode according to the input signal to obtain an optimum waveform
display.
The input signal frequency must be higher than 20 Hz, with the amplitude
greater than 8 mV.
Select the channel with the lowest frequency when several channels are
connected to signals.

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Self Calibration
The self-calibration program can quickly make the oscilloscope reach the best
working state to get the most precise measurement values. You can perform
self-calibration at any time especially when the change of the environment
temperature is up to or more than 5 ℃. Make sure that the oscilloscope has
been warmed up or operated for more than 30 minutes before the
self-calibration.
Do the following steps to do self calibration:
1. Disconnect all the input channels.
2. Press the Utility button on the front panel, and then press the Do Self Cal
softkey, and the oscilloscope will pop-out the message box shown as
below:
Figure 3 Calibration Interface
3. Press the Single button on the front panel to perform the self calibration
program. During the calibration, most of the oscilloscope‟s keys are
disabled.
4. When the self calibration process is completed, the following message will
appear: “Press Run/Stop key to exit”. Press the Run/Stop button on the
front panel to exit the calibration interface.

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Interface Test
The SDS1000X-E series oscilloscope is designed with four standard interfaces:
USB Host, USB Device, LAN and Pass/Fail. Connecting to other instruments
via these interfaces enables the oscilloscope to achieve additional capabilities.
In order to ensure the oscilloscope is operating properly it is recommended
that the user first test the interfaces.
USB Host Test
To test whether the USB Host interface is operating correctly.
Tools:
●A U disk
Steps：
1. Insert a U disk (flash drive) into the USB Host interface on the front panel of
the oscilloscope.
2. A message prompt “USB Flash Drive Detected.”appears on the screen, and
an icon will be shown in the lower right corner of the screen which confirms
the U disk has been successfully recognized.
Figure 4 USB drive in interface

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USB Device Test
To test if the USB Device interface operating correctly.
Tools：
●A computer with USB interface
● A standard USB cable (Type AB)
● NI Max software
Steps：
1. Set up NI Max software in a computer and Install the driver step by step
following the instructions.
2. Connect the oscilloscope to the computer using an USB cable.
3. Run NI Max software. Click “Device and Interface”at the upper left corner of
the NI software interface and immediately the “USBTMC”device symbol is
displayed.
4. Click “Open VISA Test Panel” option button, and then the following Interface
will appear. Next, click the “Input/Output”option button and click the “Query”
option button in order to view the Read operation information.

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LAN Port Test
Use to test if the LAN interface operates correctly when connected with NI Visa
software.
Tools：
● A computer with LAN interface
● A standard LAN cable
●NI Max software
Steps：
1. Set up NI Max software in a computer and install the driver using the
following instructions.
2. Press Utility NextPage2/4 I/O LAN IP Set, input usable IP
Address and Subnet Mask.
Figure 5 IP Setting interface
3. Connect the oscilloscope to the computer using a LAN cable via the LAN
interface ports.
4. Run NI Max software. Click “Device and Interface”at the upper left corner of
the NI software interface and select the “LAN”device symbol.

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5. Click “Open VISA Test Panel” option button, which then displays the
following interface (below). Then click the “Input/Output”option button and
click the “Query”option button. The Read operation information will be
displayed.