SDG1000X Series
Function/Arbitrary Waveform Generator

Service Manual
SM0201X-E01B

SDG1000X Service ManualIGuaranty 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 form of copying, extracting or translating the contents of this manual is
not allowed without the permission of SIGLENT.

⚫

SIGLENT will not be responsible for losses caused by either incidental orconsequential in connection with the furnishing, use or performance of thismanual as well as any information contained.

Product Certification
SIGLENT guarantees this product conforms to the national and industrial
standards in China as well as the ISO9001: 2008 standard and the ISO14001:
2004 standard. Other international standard conformance certification is inprogress.

General Safety Summary
Carefully read the following safety precautions to avoid any personal injuries or damages
to the instrument and any product connected to it. To avoid potential hazards, please use
the instrument as specified.
Only qualified technical personnel should service this instrument.
Avoid fire or open flame.
Use properly rated power line connections.
Use only the specified power line which has been approved by your local regulatory agency.
Ground the Instrument.
The instrument is grounded through the protective ground conductor of the power line. To
avoid electric shock, the ground conductor must be connected to the earth ground. 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 ground is equal to the earth, therefore do not connect thesignal wire to a high voltage. Do not touch the exposed contacts or components.
Observe all terminal ratings.
To avoid fire or electric shock, please observe all ratings and label instructions on the
instrument. Before connecting the instrument, please read the manual carefully to gain
more information about the ratings.
Do not operate with suspected failures.
If you suspect that the product is damaged, please allow only qualified service personnel
to troubleshoot and repair it.
Avoid circuit or wire exposure.
Do not touch exposed contacts or components when the power is on.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep the surface of the instrument clean and dry.

Safety Terms and Symbols
Terms used on the instrument. Terms may appear on the instrument:
DANGER: Indicates an injury or hazard that may immediately happen.
WARNING: Indicates an injury or hazard that may not immediately happen.
CAUTION: Indicates that a potential damage to the instrument or other property mightoccur.
Symbols used on the instrument. Symbols may appear on the instrument:

Hazardous

Protective

Voltage

Earth Ground

Warning

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ChassisPower

GroundSwitchIII

Catalog
Guaranty and Declaration .................................................................................................... II
General Safety Summary ................................................................................................... III
Overview of this Document ................................................................................................ VI
The SDG1000X Series Generator at a Glance ............................................................... VIIIThe Front Panel at a Glance.............................................................................................. IX
The Rear Panel at a Glance ............................................................................................. XII
Chapter 1
Quick Start ................................................................................................... 13
To Prepare the Generator for Use ..................................................................................... 14
To Adjust the Carrying Handle ............................................................................................ 15
To Set the Output Frequency.............................................................................................. 16
To Set the Output Amplitude ............................................................................................... 18
To Set the DC offset ............................................................................................................. 19
To Set the Duty Cycle of a Square Waveform.................................................................. 21
To Set the Symmetry of a Ramp Waveform ..................................................................... 23
To Generate a Pulse Waveform ......................................................................................... 25
To Generate a Noise Waveform ......................................................................................... 28
To Set the DC Voltage ......................................................................................................... 30
To Output a Built-In Arbitrary Waveform ........................................................................... 32
To Use the Built-In Help System ........................................................................................ 34
Chapter 2
Performance Verification.............................................................................. 35
Performance Verification Test ............................................................................................. 35
DC Output Verification ......................................................................................... 36
AC Amplitude Verification .................................................................................... 37
Frequency Response Verification ....................................................................... 38
Chapter 3
Assembly Procedures .................................................................................. 39
Security Consideration......................................................................................................... 39
List of Modules ...................................................................................................................... 40
Required Tools ...................................................................................................................... 40
Disassembly Procedures..................................................................................................... 41
Chapter 4
Troubleshooting ........................................................................................... 46
ESD Precautions .................................................................................................................. 46
Required Equipment ............................................................................................................ 46
Channel Board Drawing ...................................................................................................... 47
Main Board Drawing ............................................................................................................ 48
Check the Power Supply ..................................................................................................... 49
Check the Channel Board ................................................................................................... 51
Voltage Checking ................................................................................................ 51
25 MHz Clock Source Checking ......................................................................... 52
FPGA Checking ................................................................................................... 52
Connector Checking ............................................................................................ 52
Check the Main Board ......................................................................................................... 53
Voltage Verification .............................................................................................. 53

Main Board Clock Verification ............................................................................. 53
ARM CPU System Verification ............................................................................ 54
Connector Verification ......................................................................................... 54
Quick Guide for General Failures ...................................................................................... 55
Chapter 5
Maintenance................................................................................................. 56
Maintenance Summary........................................................................................................ 56
Repackaging for Shipment .................................................................................................. 56
Contact SIGLENT ................................................................................................................. 57

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VOverview of this Document
This document is for the SDG1000X Series Function/Arbitrary Waveform
Generators, which will be mostly referred to “the generator” for short in thefollowing text. The main contents described in this manual are:
The SDG1000X Series Generator at a GlanceThis part introduces the main technology characteristics for the SDG1000X
generator.
The Front Panel at a GlanceThis section introduces briefly all of the buttons and the knob on the front panel.
The Rear Panel at a GlanceThis section introduces the available ports and connectors located on the rear
panel.
Quick Start
Chapter 1 describes prepare the generator for use and helps you get familiar
with a few of its front-panel features.
Calibration
Chapter 2 Performance verification
Assembly Procedures
Chapter 3 provides disassembly procedures to help in gaining an
understanding of the structure of the generator in preparing to install or replace
any needed modules, or troubleshoot faults that might be encountered during
operation.
Troubleshooting
Chapter 4 provides troubleshooting procedures for the internal circuit boards,
as well as a quick guide for solving general problems. Before any operation,please read the ESD Precautions to avoid personal injury or damage to thegenerator.
Maintenance
Chapter 5 provides information on maintenance, daily care and unpacking
inspection of the instrument. Contact information is included at the end of thechapter in case more support is required.

The Different SDG1000X Models Addressed by this Manual
All the description for function and performance in this document are according
to the SDG1062X series generator, and apply to other models. The SDG1000X
series contains the following models:Type

Bandwidth

Channels

SDG1032X

30 MHz2

SDG1062X

60 MHz2

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VIIThe SDG1000X Series Generator at a Glance
SIGLENT’s SDG1000X is a series of dual-channel function/arbitrary waveformgenerators with specifications that include up to 60 MHz maximum bandwidth,
150 MSa/s sampling rate and 14-bit vertical resolution. The proprietary
EasyPulse techniques help to solve the weaknesses inherent in traditional DDS
generators when generating pulse waveforms, and the special square
generator is capable of generating square waveforms up to 60 MHz infrequency with low jitter. With these advantages, the SDG1000X can provide
users with a variety of high fidelity / low jitter signals while meeting the growing
requirements of a wide range of complex and varied applications.

Characteristics
The powerful feature set for the SDG1000X generator family includes:
Dual-channel，with bandwidth up to 60MHz，and amplitude up to 20Vpp
150 MSa/s sampling rate, 14-bit vertical resolution，and 16 kpts waveform length
Innovative EasyPulse technology, capable of generating lower-jitter Pulse waveforms,
brings a wide range and extremely high precision in pulse width and rise/fall times
adjustment
Special circuit for Square wave function, can generate Square waves up to 60 MHz
with jitter less than 300 ps+0.05 ppm of period
Plenty of analog and digital modulation types: AM、DSB-AM、FM、PM、FSK、ASK、
PSK and PWM
Sweep and Burst function
High precision Frequency Counter
Standard interfaces: USB Host, USB Device（USBTMC）, LAN（VXI-11）
Optional interface: GPIB

Note: All the specifications described in this manual refer to the SDG1062X.

VIII

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The Front Panel at a Glance
3. Screen Display

4. Numeric Keyboard

5. Knob

2.USB Host
6. Arrow Keys

1.Power Switch

8. Channel Select Key

11. Menu Keys

9. Function Keys
7. CH1/CH2 Control/Output Port
10. Waveform Option
Area

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The User Interface at a Glance
SDG1000X can only display parameters and waveform for one channel at atime. The picture below shows the interface when CH1 is selected and AM
modulation of a sine wave function is selected. The information displayed mayvary depending on the function selected.
1

2

3

4

8

7

6

5

1. Waveform Display Area
Displays the currently selected waveform of each channel.
2. Channel Status Bar
Indicates the selected status and output configuration of the channels.
3. Basic Waveform Parameters Area
Shows the current waveform’s parameters for the selected channel. Press
Parameter and select the corresponding softkey to highlight the parameterto configure. Then use number keys or knob to change the parameter value.
4. Channel Parameters Area
Displays the load and output settings of the currently selected channel.
Load ----Value of the output load, as selected by the user.
Press Utility → Output → Load, then use the softkeys, number keys or knob
to change the parameter value; or continue pressing the correspondingX

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output key for two second to switch between High Impedance and 50 Ω.
High Impedance: display HiZ.
Load: display impedance value (the default is 50 Ω and the range is 50 Ω to
100 kΩ).
Note: This setting does not actually change the instrument’s output
impedance of 50 Ω but rather is used to maintain amplitude accuracy into
different load values.
Output ----Channel output state.
After pressing corresponding channel output control port, the current
channel can be turned on/off.
5. LAN Status Icon
The SDG1000X will show different prompt messages based on the current
network status.
This mark indicates LAN connection is successful.
This mark indicates there is no LAN connection or LAN connection is
unsuccessful.
6. Mode Icon
The SDG1000X will show different prompt messages based on the current
choosing status of the mode.
This mark indicates current mode is Phase-locked.
This mark indicates current mode is Independent.
7. Menu
Shows the menu corresponding to the displayed function. For example,
Figure 4 shows the parameters of “AM modulation”.
8. Modulation Parameters Area
Shows the parameters of the current modulation function. After selecting thecorresponding menu, use number keys or knob to change the parametervalue.

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XI

The Rear Panel at a Glance

MHz Clock Input/Output
Aux 10In/OutAux In/Out
Counter
Earth Terminal

LAN Interface

USB Device

AC Power Supply Input

WARNING: For protection from electric shock, the grounding power cord mustnot be defeated. If only a two-contact electrical outlet is available, connect the
instrument’s chassis ground screw (see above) to a good earth ground.

XII

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Chapter 1 Quick Start
One of the first things you will want to do with your generator is to becomeacquainted with the front panel. We have written the exercises in this chapter
to prepare the instrument for use and help you get familiar with some of its frontpanel operations. This chapter is divided into the following sections:⚫

To Prepare the Generator for Use⚫

To Adjust the Carrying Handle⚫

To Set the Output Frequency⚫

To Set the Output Amplitude⚫

To Set a DC Offset Voltage⚫

To Set the Duty Cycle of a Square Waveform⚫

To Set the Symmetry of a Ramp Waveform⚫

To Configure a Pulse Waveform⚫

To Configure a Noise Waveform⚫

To Set the DC Voltage⚫

To Output a Built-In Arbitrary Waveform⚫

To Use the Built-In Help System

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To Prepare the Generator for Use
1. Check the list of accessories
Accessories supplied with the instrument are listed below. If anything is missing
or damaged, please contact your nearest SIGLENT Sales Office.
⚫

Quick Start Guide⚫

Certification of compliance⚫

A Guaranty Card⚫

A CD (EasyWave software, Datasheet and User Manual)⚫

A power cord designed for use in the destination country⚫

A USB cable

2. Connect the power cord and turn on the generator
The instrument runs a short power-on self-test, which takes several seconds.
The generator powers up in the sine wave function at 1 kHz with an amplitudeof 4 V peak-to-peak (CH1). At power-on, the Output connector is disabled. To
enable the Output connector, press the Output key.
If the generator does not turn on, verify that the power cord is firmly connectedto the power socket on the rear panel (the power-line voltage is automaticallysensed at power-on). Also, make sure that the generator is connected to a
power source that is energized.
Then, verify that the generator is turned on.

Note: If the power-on self-test fails, the generator may stop and display a black
screen. For solutions, please contact the nearest SIGLENT sales office orreturn the generator to SIGLENT for service.

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To Adjust the Carrying Handle
To adjust the position, grasp the handle by the sides and pull outward. Then,
rotate the handle to the desired position.

Pull the handle ahead for easy carrying
Pull the handle down

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To Set the Output Frequency
The following steps explain change the frequency to 20 KHz.
1. Press the Parameter softkey
Press the Parameter softkey to enter the parameter set interface. The waveform
parameters including Frequency/Period, Amplitude/HighLevel, Offset/LowLevel
and Phase are ready to modify using the numeric keypad.
2. Press the Frequency/Period softkey
The displayed frequency is either the power-on value or the frequency
previously selected. When changing the function, the same frequency is used
if the current value is valid for the new waveform. To set the period, press thesoftkey again to switch to the period parameter

3. Input the desired frequency
Use the digital keypad to input the value directly, enter the value “20”.

16

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Then press the corresponding softkey to select the desired unit. For example,
press kHz.

Note: The desired numerical value can be modified using the knob anddirection keys.

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To Set the Output Amplitude
The following steps describe how to change the amplitude to 8 Vpp.
1. Press the Amplitude/HighLevel softkey
The displayed amplitude is either the power-on value or the amplitudepreviously selected. When changing the function, the same amplitude is used
if the current value is valid for the new waveform. To set the HighLevel for the
waveform, press the softkey again to switch to the HighLevel parameter.
2. Input the desired amplitude
Use the digital keypad to input the value directly, enter the value “8”.

Then press the corresponding softkey to select the desired unit. For example,
press Vpp.

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To Set the DC offset
The following steps describe how to change offset to 1 Vdc.
1. Press the Offset/LowLevel softkey
The displayed offset is either the power-on value or the offset previously
selected. When changing the function, the same offset is used if the current
value is valid for the new waveform. To set the LowLevel for the waveform,press the softkey again to switch to the LowLevel parameter.
2. Input the desired offset
Use the digital keypad to input the value directly, enter the value “1”.

Then press the corresponding softkey to select the desired unit. For example,
press Vdc.

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19Note: The desired numerical value can be modified using the knob anddirection keys.

20

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To Set the Duty Cycle of a Square Waveform
At power-on, the default duty cycle for square wave is 50%. The duty cycle
setting range is limited by the “Frequency/Period” setting. The following steps
show how to change the duty cycle to 80%.
1. Select the square wave function
Press Waveforms → Square to select the square function and then select thedesired output frequency to 1 kHz.
2. Press the DutyCycle softkey
The displayed duty is either the power-on value or the percentage previously
selected.

3. Input the desired duty
Use digital keypad to input the value directly, enter the value “80”, then press
the corresponding softkey to select the desired unit “%”.

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22

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To Set the Symmetry of a Ramp Waveform
At power-on, the Symmetry for Ramp wave is 50%. The symmetry can be
adjusted between 0% and 100%. The following steps describe the procedure
to set the symmetry to 60%.
1. Select the Ramp wave function
Press Waveforms → Ramp to select the pulse function and then select thedesired output frequency to 1 MHz.
2. Press the Symmetry softkey
The displayed symmetry is either the power-on value or the percentage
previously selected.

3. Input the desired symmetryUse digital keypad to input the value directly, enter the value “60”, then press
the corresponding softkey to select the desired unit “%”.

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24

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To Generate a Pulse Waveform
The generator can be set to output a pulse waveform with variable width, edge
time and delay time. The following steps show you how to generate a 500 µs
period pulse waveform with a pulse width of 100 µs, rise time of 8 ns and delay
time of 50 ns.
1. Select the pulse function
Press Waveforms → Pulse to select the pulse function and output a pulse
waveform with the default parameters.
2. Set the Pulse period
Press the Frequency/Period softkey twice and then set the period to 500 µs.

3. Set the Pulse Width
Press the PulWidth/Duty softkey and then set the pulse width to 100 µs. The
pulse width represents the time from the 50% threshold of the rising edge tothe 50% threshold of the next falling edge.

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4. Set the Edge Time
Press the Rise/Fall softkey and then set the rising edge to 10 ns.

5. Set the Pulse Delay
Press the Delay softkey and then set the delay time to 50 ns.

26

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To Generate a Noise Waveform
The generator can be set to output a noise waveform with an adjustable Stdev
and Mean. The following steps show you how to generate a noise waveformwith 500 mV Stdev and 1 mV Mean.
1. Select the Noise function
Press Waveforms → Noise to select the noise function and output a noise
waveform with the default parameters.

2. Set the Stdev
Press the Stdev softkey and then set the Stdev to 500 mV.

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3. Set the Mean
Press the Mean softkey and then set the mean to 1 mV.

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To Set the DC Voltage
The following steps show how to set a dc voltage with +1 Vdc.
1. Select the DC function
Press Waveforms → Page 1/2 → DC to select the DC function.

2. Set the DC Offset
Use the digital keypad to input the value directly, enter the value “1”.

Then press the corresponding softkey to select the desired unit. For example,
press Vdc.

30

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To Output a Built-In Arbitrary Waveform
There are approximately 200 built-in arbitrary waveforms stored in non-volatilememory. The following steps show how to output the built-in “exponential fall”
waveform from the front panel.
1. Set the arbitrary waveform function
Press Waveforms → Page 1/2 → Arb Type → Built-In to enter the arbitrary
waveform setting interface.

2. Set the Math waveform
Press the Math softkey to display the mathematic waveform as below.

3. Output the exponential fall waveform
32

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Rotate the knob to select the ExpFall waveform and press the knob. The
waveform is output with the present settings unless they are changed.

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To Use the Built-In Help System
The built-in help system is designed to provide context-sensitive assistance ofsome functions. A list of help topics is also available to assist you with several
operations.
1. Read the help information
Press Utility → System → Page 1/2 → Help to enter the following interface. You
will see a list of help topics as below. Use Up and Down keys, then press Selectto choose a Help topic.

2. Press “Cancel” or any function button to exit the help system

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Chapter 2 Performance Verification
Performance Verification Test
The performance verification tests are recommended as acceptance tests uponreceipt of the instrument. The acceptance test results should be comparedagainst the specifications given in the data sheet. After acceptance, repeat theperformance verification tests at every calibration interval.
If the instrument fails performance verification, adjustment or repair is required.

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DC Output Verification
This test checks if the DC offset listed in the table below are within the specified
range using a DMM.
1. Set the DMM to measure DC voltage. Connect the DMM to the CH1 outputof the generator as shown below.

2. Turn on CH1 and select the DC waveform.
3. Set the instrument to each output value described in the table below andmeasure the output voltage with the DMM. Be sure the generator output load
is set to High–Z and the output is enabled.
DC Offset
0 mV
10 mV
100 mV
1V
3V
10 V-10 mV-100 mV
-1 V
-3 V
-10 V

CH1

CH2

Spec Range± (1%+3 mV)-3 mV ~ 3 mV
6.9 mV ~ 13.1 mV
96 mV ~ 104 mV
0.987 V ~ 1.013 V
2.967 V ~ 3.033 V
9.897 V ~ 10.103 V-13.1 mV ~ - 6.9 mV-104 mV ~ -96 mV-1.013 V ~ -0.987 V-3.033 V ~ -2.967 V
10.103 V ~ -9.897 V

4. Compare the measured voltage to the spec range shown in the table above.

36

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AC Amplitude Verification
This test checks the AC amplitude output accuracy at the frequency of 10 kHz
using a DMM.
1. Turn on the generator and choose CH1 as the operating channel. Set the
Load to HiZ.
2. Connect the DMM and generator as shown below.

3. Select Sine waveform of the generator and set the amplitude to the values
listed below in sequence.
Amplitude (V)CH1 (V)CH2 (V)Spec Range (V)± (1%+1 mV)

11

10.889~11.111

5.6

5.543~5.657

2

1.979~2.021

0.9

0.89~0.91

0.4

0.395~0.405

0.142

0.13958~0.14442

0.064

0.06236~0.06564

0.022

0.02078~0.02322

0.01

0.0089~0.0111

0.004

0.00296~0.00504

4. Remove the BNC cable to CH2 output and perform the same verification as
CH1.
5. Compare the value measured from the DMM to the spec range shown in thetable above.

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Frequency Response Verification
This test checks if the amplitude flatness is within the spec range using a PC
controlled Power Meter. If you do not have a PC controlled Power Meter, simply
ignore the USB connections shown.
1. Turn on the generator and choose CH1 as the operating channel. Set the
Load to 50 Ω.
2. Connect the Power Meter, PC and generator as shown below.

3. Select Sine waveform of the generator and set the amplitude to 1 V and thenstep through the frequencies listed below in sequence. Then, set theamplitude to 2.5V and repeat the frequency steps.
OutputVoltageFrequency CH1 CH2

1V

2.5 V

Spec Range
(dBm)

CH1

CH2

Spec Range(dBm)

10 KHz3.6794 ~ 4.2794

11.64 ~12.24

100 KHz

3.6794 ~ 4.2794

11.64 ~12.24

1 MHz

3.6794 ~ 4.2794

11.64 ~12.24

5 MHz

3.6794 ~ 4.2794

11.64 ~12.24

10 MHz3.6794 ~ 4.2794

11.64 ~12.24

20 MHz3.6794 ~ 4.2794

11.64 ~12.24

30 MHz3.6794 ~ 4.2794

11.64 ~12.24

40 MHz3.6794 ~ 4.2794

11.64 ~12.24

50 MHz3.6794 ~ 4.2794

11.64 ~12.24

60 MHz3.6794 ~ 4.2794

11.64 ~12.24

4. Move the BNC cable to CH2 output and repeat the sequence used for CH1.
5. Compare the value measured from Power Meter to the spec range shown in
the table above.
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Chapter 3 Assembly ProceduresThis chapter describes how to remove the major modules from the SDG1000X
series generator. To install the removed modules or replace new modules,
please follow corresponding operating steps in reverse order.
The following subjects are addressed in this chapter:⚫

Security Consideration which describes security information needed toconsiderate while operating.

⚫

List of Modules in which the modules to remove are listed.

⚫

Required Tool which describes the tools needed to perform the procedures⚫

Disassembly Procedures which describes in detail how to remove andinstall the modules

Security Consideration
Only qualified personnel should perform the disassembly procedures.
Whenever possible, disconnect the power before removing or replacing.
Otherwise, personal injuries or damages to the components may occur.
Avoid Electric Shock Hazardous voltages exist on the LCD module and power
supply module. To avoid electrical shock, disconnect the power cord from thegenerator, and then wait at least three minutes for the capacitors in thegenerator to discharge before beginning the disassembly.
Preventing ESD Almost all electrical components can be damaged byelectrostatic discharge (ESD) during handling. Component damages can occur
at electrostatic discharge voltages as low as 50 volts. The following guidelines
will help preventing ESD damage when servicing the instrument or any
electronic device.
◆ Disassemble instruments only in a static-free work area.
◆ Use a conductive work area to reduce static charges.
◆ Use a conductive wrist strap to reduce static charge accumulation.
◆ Minimize handling.
◆ Keep replacement parts in original static-free packaging.
◆ Remove all plastic, foam, vinyl, paper and other static-generating
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39

materials from the immediate work area.
◆ Use only anti-static solder suckers.

List of Modules
The following removable modules are listed in the order of performing
disassembly procedures.
Number of Module

Module1Handle2

Metal Shell and Rear Cabinet

3

Front Cabinet

4

Display Module

5

Main Body

Required Tools
Use these tools to remove or replace the modules in the generator:⚫

40

T10 and T15 Torx screwdriver

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Disassembly ProceduresThis section describes how to remove and install the generator’s modules listed
above in detail. Complete disassembly will be best achieved through thefollowing operating steps.
1. Pull out the handle hard from the two sides of the generator.

2. After removing the 4 screws of the pad and the 1 screw at the bottom of thegenerator’s case, remove the metal shell carefully from the main body to
avoid being scratched.

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3. Open the cable clamp as ①⑤⑥②

show and pull out the cable as ③④

show, and then remove the 5 screws as shown in the following

figure.

4. Separate the front panel from the main body of the generator.

5. Pull out the knob and then remove the screws attaching the hardware
partition plate and the front cabinet screws.

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6. Remove the keypad circuit board assembly.

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7. Remove the 3 screws holding the screen bracket and remove the metal front
panel.

8. Pull out the connecting cable according to the index number as shown in
the following figure and remove the keyboard.

9. Remove all the 9 screws fixed the main board and power supply board using
the T10 Torx screwdriver and separate the main board and power supply
board carefully from the main body of the generator to avoid being scratchedby the sharp metal edge.

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10. Pull out the connecting cable as shown in the following figure and thenremove the fan, rear interface board, channel board and main board.

Note:
To assemble the generator, please follow these same steps in reverse order.

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45Chapter 4 Troubleshooting
The internal structure of the generator consists of the main board, channelboard, power supply board, key and LCD board, and interface board. They arelinked through cables or connectors. This chapter explains the main
troubleshooting procedures for these boards (mainly main board and channelboard) by measuring the corresponding test points and checking the signals ofconnectors on them, thus to help in determining the reason for the failure thathas been encountered while operating the SDG1000X series arbitrary
waveform generator.

ESD Precautions
While performing any internal test of the generator, please refer to the following
precautions to avoid damages to its internal modules or components resulting
from ESD.
⚫

Handle circuit boards by their edges as much as possible.

⚫

Avoid handling of static-sensitive modules if not necessary.

⚫

Wear a grounded antistatic wrist strap to drain the static voltage from your.

body while touching these modules.
⚫

Operate static-sensitive modules only in static-free areas. Avoid handling
modules in areas that allow anything capable of generating or holding astatic charge.

Required Equipment
The equipment listed in the table below is required to troubleshoot the generator.
Table 5-1 Required Equipment

46

Equipment

Critical Specifications

ExampleDigital Multimeter

DC Accuracy ±0.015%

SIGLENT SDM3055

Oscilloscope

300 MHz Bandwidth

SIGLENT SDS2354X

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Channel Board Drawing
The channel board is a kind of signal conditioning board for generating analog
signal. It mainly deals with the adjusting of signal parameters such as frequency,
amplitude, and so on. Please refer to the following drawing to quickly locate thetest points on the channel board for easy resolution of any problems
encountered.

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47Main Board Drawing
The main board is the control center of the generator that contains an ARM
CPU system. It completes the GUI function, controlling and configuration
function of the channel board as well as the user interface. Please refer to thefollowing drawing to quickly locate the test points on the main board for easy
resolution of any problems encountered.

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Check the Power Supply
There are two power connectors through which the channel board and mainboard can be supplied power.
Before performing the power supply testing procedure, please make sure thatthe generator is grounded correctly through the protective lead of the power
cord. Take care not to touch or even disassemble the power supply module
without any safety precautions, electric shock could occur. Here are proceduresfor testing the power supply:
1. Disconnect the power cord of the generator and then check whether the fuseis good.
2. Remove metal shell of the generator, and then disconnect the power
connector connected to the main board.
3. Focus on the Power Connector for channel board, which contains 6 pins fromPin 1 to Pin 6. Since two of the six pins are ground wire, test the other fourpins that are marked with blue, yellow, red and white to check whether thevoltage value is within the corresponding specified range using a digital
multimeter. The voltage parameters to be tested are listed in the table below:
Table 5-2 Test Voltages of Power Connector
Voltage value

Pins

Error limit

20 V

VH+(red)

±10%

-20 V

VH-(white)

±10%

6.5 V

VL+(yellow)±10%-6.5 V

VL-(blue)±10%

If each tested voltage value is within the corresponding specified range listed
in the table above, then the power supply is working normally. Otherwise,
please go to step 4.
4. Disconnect the power connector and redo step 3. Because of the removal of
the load, each voltage value error limit increases by approximately 20 percent.
Table 5-3 Test Voltages of the Connector After Disconnected
Voltage value

Pins

Error limit

20 V

VH+(red)

±30%

-20 V

VH-(white)±30%

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49

6.5 V

VL+(yellow)±30%-6.5 V

VL-(blue)±30%

If each tested voltage value is within the specified range listed in the table above,
then some abnormality of the load is most likely causing the power supply
problem. Continuous checking or even replacing the channel/main board isrequired for further test.
If there is at least one voltage value that is out of the specified range, then the
power supply module appears to be problematic, and a replacement will be
required. For safety, please have qualified technical personnel to disassemble
the power supply module.

Note: The main power supply provides an input fuse to protect against thedanger of fire in the event of a failure of the power supply circuitry. However,this fuse will not fail ("open" or "blow") in normal power supply operation except
when a significant overload occurs. Replace the entire main power supply
assembly if the input fuse fails.

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Check the Channel Board
If it is desired to remove the channel board from the metal shelf inside thegenerator, please place it on a clean, insulated mat. Here are the proceduresfor testing the main board:
1. Several types of connectors are used on the channel board. Check to makecertain that all of these are connected properly.
2. After checking these connectors, then connect the generator to AC power
and power it on. Check if the voltage values at all test points are within thespecified range using a digital multimeter. The voltage parameters to betested are listed in table 5-4:

Voltage Checking
Test the voltage points on the channel board in the table below. To locate thetest points, please refer to the drawing of the channel board. If not each tested
voltage value is within the corresponding spec range referring to table 5-4, it
proves to be faulted, please return it to the factory to have it repaired or contact
SIGLENT.
Table 5-4 Test Voltages of the Channel Board
Test point

Voltage value

Error limit

AVCC15V

+15 V

±5%

AVEE-15V

-15 V

±5%

AVCC5V+5 V±5%AVEE-5V

-5 V

±5%

VCC5V

+5 V

±5%

VCC3V3+3.3 V±5%

VCC1V2+1.2 V±5%

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25 MHz Clock Source Checking
There is an oscillator chip generating a 25 MHz 3.3 V LVCOMS clock source tothe entire channel board. Please check it, referring to the marked point on thechannel board drawing.

FPGA Checking
To check if the FPGA is working properly, please observe the test point marked
with FPGA_LED on the channel board drawing. The LED light flashes at therate of 1Hz in normal case, if it cannot be lighted or twinkles at incorrect
frequency, then the FPGA may be at fault.

Connector Checking
Table 5-5 Connectors of the Channel Board
Connector
CON_J7
CON_J3Function
Communication between the main board and the channelboard.
Communication between the channel board and the interface
board.

CON_J5

Power supply of the channel board.

CON_J6

Power supply of the fan.

Table 5-5 explains the function of all the connectors on the channel board. It is
important to ensure that all the connections are tight.

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Check the Main Board
If the power board does need to be removed from the metal shelf located inside
the generator, place it on a clean, insulated mat. Testing procedures for themain board are as follows:
1. Several types of connectors are located on the main board. Check if all these
are connected properly.
2. Make certain that the connectors on the main board are properly connected,
then connect the generator to AC power and turn it on. Check if the voltage
values at all test points are within the spec range using a digital multimeter.
The voltage parameters to be tested are listed in table 5-6:

Voltage Verification
Test the voltage points on the main board and compare to the table below. If
each tested voltage value is within the corresponding specified range referringto the table below, then the main board works normally. If the voltages are outof the specified range, please return it to the factory to have it repaired orcontact SIGLENT.
Table 5-6 Test Voltages of the Main Board
Test point

Voltage value

Error limit

16 V

16 V

±5%

3.3 V

3.3 V

±5%

5V

5V

±5%

Main Board Clock Verification
The main board clock is the internal system clock of the generator. To verify if
the clock on the main board is working normally, please test the clock using anoscilloscope.
Table 5-7 Clock Source of the Main Board
Test point

Frequency

Stability

Level

CLK_25 MHz

25 MHz±50 ppm

3.3 V LVCOMS

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ARM CPU System Verification
Observe the ARM_LED light on the main board, which indicates the working
state of ARM CPU system. If the light turns on, then the corresponding codes
have been loaded successfully and the chip is in an operating state. Otherwise,
there may be a problem with it.

Connector Verification
Table 5-8 Connectors of the Main Board
Connector

Function

M_CON_J3

Communication between the main board and the Key_LCD
board.

M_CON_J14

Power supply of the main board.

M_CON_J4

Communication between the main board and the channelboard.

M_CON_J15

USB host connector.

Table 5-8 explains the function of all the connectors on main board. It is
important to ensure that all the connections are tight.

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Quick Guide for General Failures
The general hardware failures are described in the following. Reading thefollowing information can help in determining the cause of some general
hardware failures:
1. No start-up after pressing the power button:(1) Check if the power cord is correctly connected.
(2) Check if the power button is operating correctly.
(3) Check whether the fuse has been burned out. If the fuse is blown, please
replace with a fuse of the same rating(4) Check the connection between the power supply and the main board.
(5) If the instrument still does not work normally, please contact SIGLENT.
2. Starts up with a dark screen:(1) Check the connection between the power supply and the main board.
(2) Check the connection between the keypad circuit board and the main board.
(3) If the instrument still does not work normally, please contact SIGLENT.
3. No response after pressing any button, or abnormal display of thescreen:(1) Check the connection between the keypad circuit board and the main board.
(2) If the instrument still does not work normally, please contact SIGLENT.
4. The output voltage amplitude measured is higher or lower than
expected:(1) Check the connection between the generator and the load.
(2) Check if the impedance set in generator matches the input impedance ofthe load.
(3) If the instrument still does not work normally, please contact SIGLENT.

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Chapter 5 Maintenance
Maintenance Summary
SIGLENT warrants that the products it manufactures and sells are free fromdefects in materials and workmanship for a period of three years from the dateof shipment from an authorized SIGLENT distributor. If a product provesdefective within the respective period, SIGLENT will provide repair or
replacement as described in the complete warranty statement.
To arrange for service or obtain a copy of the complete warranty statement,
please contact your nearest SIGLENT sales and service office.
Except that as provided in this summary or the applicable warranty Statement,
SIGLENT makes no warranty of any kind, express or implied, including without
limitation the implied warranties of merchantability and fitness for a particularpurpose. In no case shall SIGLENT be liable for indirect, special orconsequential damages.

Repackaging for Shipment
If the unit needs to be shipped to SIGLENT for service or repair, be sure:
1. Attach a tag to the unit identifying the owner and indicating the required
service or repair.
2. Place the unit in its original container with appropriate packaging material
for shipping.
3. Secure the container with strong tape or metal bands.
If the original shipping container is not available, place your unit in a container
which will ensure at least 4 inches of compressible packaging material aroundall sides for the instrument. Use static-free packaging materials to avoid
additional damage to your unit.

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Contact SIGLENT
Headquarters
SIGLENT TECHNOLOGIES CO., LTD.
Blog No.4 & No.5, Antongda Industrial Zone, 3rd Liuxian Road, Bao’an District,
Shenzhen, 518101, China.
Tel:+ 86 755 3688 7876
Fax:+ 86 755 3359 1582
sales@siglent.com
www.int.siglent.com/

North America
SIGLENT Technologies America, Inc
6557 Cochran Rd Solon, Ohio 44139
Tel: 440-398-5800
Toll Free:877-515-5551
Fax: 440-399-1211
info@siglent.com
www.siglentamerica.com

EuropeSiglent Technologies Germany GmbH
Staetzlinger Str. 70, 86165 Augsburg, Germany
Tel: +49(0)-821-666 0 111 0
Fax: +49(0)-821-666 0 111 22
E-mail: info-eu@siglent.com
Web: https://www.siglenteu.com

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