SIGLENT SDG800 Series User manual

SDG800 Service Manual I
Service Manual
E01A
SDG800 Series
Function/Arbitrary Waveform Generator

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 way 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 or
consequential in connection with the furnishing, use or performance of this
manual 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 in
progress.

SDG800 Service Manual III
General Safety Summary
Carefully read the following safety precautions to avoid person injury and
prevent damage to the instrument or any products connected to it. To avoid
potential hazards, please use the instrument as specified.
Only qualified technician should perform service procedures
Use Proper Power Line
Use only the special power line of the instrument that approved by local state.
Ground the Instrument
The instrument grounds through the protective terra conductor of the power
line. To avoid electric shock, the ground conductor must be connected to the
earth. Make sure the instrument is grounded correctly before connect 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. Do not touch the exposed contacts or
components.
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.
Not Operate with Suspected Failures
If you suspect that there is a damage of the instrument, please let a qualified
service personnel check it.
Avoid Circuit or Components Exposed
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 a potential damage to the instrument or other property
that might occur.
Symbols used on the instrument. Symbols may appear on the instrument:
Hazardous Protective Warning Earth Ground Power
Voltage Earth Ground Switch

SDG800 Service Manual V
Overview for the Document
The document is for SDG800 series arbitrary waveform generator, which will
be mostly written as generator for short in the following text. The main contents
described in this manual are:
SDG800 Series Generator at a glance
This part introduces the main technology characteristics for SDG800
generator.
The Front Panel at a glance
This part introduces briefly all the buttons and the knob on the front panel.
The Rear Panel at a glance
This part introduces all the ports for easy communication on the rear panel.
Specification
Chapter 1 lists the generator’s specifications.
Quick Start
Chapter 2 prepares the generator for use and helps you get familiar with a few
of its front-panel features.
Calibration
Chapter 3 provides calibration, verification and adjustment procedures for the
generator.
Assembly Procedures
Chapter 4 provides disassembly procedures for you to get an understanding of
the structure of the generator, thus to install or replace some needed modules,
or troubleshoot faults you encounter while operating it.
Troubleshooting
Chapter 5 provides troubleshooting procedures for the internal main board and
power supply board, as well as the quick guide for general troubles. Before any
operation, you should read the ESD Precautions to avoid personal injuries or
damages to the generator
Maintenance
Chapter 6 provides information on maintenance, daily care and unpacking
inspection of the instrument. The contact information is attached in the end in
case of some unsolvable troubles you encounter.

Convention for the whole Contents
All the description for function and performance in this document are according
to SDG830 series generator, and apply to generator of the other types. The
SDG800 series contains the following types:
Type
Analog Bandwidth
SDG805
5 MHz
SDG810
10 MHz
SDG830
30 MHz

SDG800 Service Manual VII
SDG800 Series at a Glance
The SDG800 series is a direct digital synthesized waveform generator with
built-in arbitrary waveform and pulse capabilities. Its combination of excellent
system features, easiness in usage and versatile functions makes this
generator a perfect solution for your testing now and in the future.
Characteristics
⚫DDS technology provides precise, stable and low distortional output signal.
⚫Innovative Easy Pulse technology, capable of generating lower jitter
Square or Pulse waveforms, brings a wide range and extremely high
precision in pulse width and rise/fall times adjustment.
⚫3.5’TFT color LCD display.
⚫125MSa/s sampling rate, 14-bit resolution.
⚫Frequency characteristics:
Sine: 1μHz to 30 MHz
Square: 1μHz to 10 MHz
Ramp: 1μHz to 300 kHz
Pulse: 500μHz to 5MHz
White Noise: ＞30MHz bandwidth (-3dB)
Arbitrary: 1μHz to 5MHz
⚫5 standard waveforms: Sine, Square, Ramp, Pulse, Noise
⚫Self-defined arbitrary waveform
⚫Multiple modulation function, various modulated waveform: AM, DSB-AM,
FM, PM, ASK, FSK, Sweep and Burst.
⚫Dedicated interface for trigger in/out and synchronous signal output.
⚫Support USB storage device. Software updating could also be performed
using USB devices.
⚫Up to 16k sample points of internal waveform depth, which can rebuild or
simulate any complex waveform.
⚫Remote control is realized using the USB cable.
⚫Multiple interfaces: USB host & device.
⚫Support the seamless connection with SIGLENT Series Digital
Oscilloscopes; Be able to directly read and rebuild the stored waveform in
the oscilloscopes.
⚫2 languages（English and Chinese）user interface and built-in help system.
Note: All the specifications described in this manual are according to SDG830.

The Front Panel at a Glance
No.
Description
No.
Description
1
ON/OFF Switch
8
Direction Keys
2
USB Host
9
Output Control and Trigger
Keys
3
LOGO
10
Function Keys
4
Model
11
Waveform Selection Keys
5
Return Key
12
Menu Operation Keys
6
Digital Keypad
13
LCD Display
7
Universal Knob
2
2
6
7
1
13
10
9
8
5
3
2
4
2
11
1 2
12
1 2

SDG800 Service Manual IX
The Front Panel Display at a Glance
Output Status
Parameter
Name
Softkey
Parameter Unit
Value
Mod Information

The Rear Panel at a Glance
USB Device
Power Socket

SDG800 Service Manual XI
Contents
Guaranty and Declaration.........................................................................................................II
General Safety Summary .........................................................................................................III
Safety Terms and Symbols......................................................................................................IV
Overview for the Document.........................................................................................................V
SDG800 Series at a Glance ..................................................................................................... VII
The Front Panel at a Glance....................................................................................................VIII
The Rear Panel at a Glance........................................................................................................X
Specification....................................................................................................................................1
Specifications........................................................................................................................1
General Specification..........................................................................................................5
Quick Start.......................................................................................................................................6
Prepare the Generator for Use..........................................................................................7
Adjust the carrying handle ................................................................................................8
Set the Output Frequency..................................................................................................9
Set the Output Amplitude.................................................................................................10
Set the DC offset ................................................................................................................11
Set the Duty Cycle of a Square Wave ...........................................................................12
Set the Symmetry of a Ramp Wave...............................................................................13
Generate a Pulse Waveform............................................................................................14
Configure a Noise Waveform..........................................................................................15
Set the DC Voltage...............................................................................................................16
Output a Built-In Arbitrary Waveform.................................................................................17
Use the Built-In Help System..............................................................................................19
Performance verification..............................................................................................................20
Recommended Test Equipment.....................................................................................20
Performance Verification Test.........................................................................................21
DC Output Verification..............................................................................................22
Frequency Response Verification..........................................................................23
AC Amplitude Verification........................................................................................24
Assembly Procedures..................................................................................................................25
Security Consideration.............................................................................................25
List of Modules ...........................................................................................................26
Required Tools............................................................................................................26
Disassembly Procedures.........................................................................................26
A view of the whole Instrument......................................................................................27
Removing the Handle........................................................................................................28
Removing the Metal Shell and Rear Cabinet...............................................................29
Removing the Front Cabinet...........................................................................................31
Removing the Display Module........................................................................................33
Removing the Main Body.................................................................................................35

Troubleshooting............................................................................................................................37
ESD Precautions ................................................................................................................37
Required Equipments .......................................................................................................37
Main Board Drawing..........................................................................................................38
Check the Power Supply..................................................................................................39
Check the Main Board.......................................................................................................40
Quick Guide for General Failures ..................................................................................42
Maintenance..................................................................................................................................43
Maintain Summary.............................................................................................................43
Repackaging for Shipment..............................................................................................44
Contact SIGLENT ...............................................................................................................45

SDG800 Service Manual 1
Specification
These specifications apply to SDG800 series Arbitrary Waveform Generator.
To verify that an generator meets specifications, it must first meet the following
conditions:
⚫The generator must have been operating continuously for fifteen minutes
within the specified operating temperature.
⚫The generator must be within the factory calibration interval of one year.
Specifications
Model
SDG805
SDG810
SDG830
Max.output
frequency
5MHz
10MHz
30MHz
Output channels
1
Sample rate
125 MSa/s
Arbitrary
waveform length
16 kpts
Frequency resolution
1 μHz
vertical resolution
14 bits
Waveform
Sine, Square, Ramp, Pulse, Gaussian Noise, 46 types of built-in arbitrary waveform
Sine
1μHz ~ 5MHz
1μHz ~ 10MHz
1μHz ~30MHz
Square
1μHz ~ 5MHz
1μHz ~ 10MHz
1μHz ~10MHz
Pulse
500μHz~5MHz
Ramp/Triangular
1μHz ~ 300KHz
Gaussian white noise
5MHz (-3dB)
10MHz (-3dB)
30MHz (-3dB)
Arbitrary waveform
1μHz ~ 5MHz
Modulation
AM, DSB-AM, FM, PM, FSK, ASK, PWM, Sweep, Burst
Standard interface
USB Host & Device
Dimension
W x H x D=229mm x 105mm x 281mm

2SDG800 Service Manual
Frequency Specification
Model
SDG805
SDG810
SDG830
Waveform
Sine, Square, Ramp, Pulse, Noise, Arbitrary
Sine
1μHz ~ 5MHz
1μHz ~ 10MHz
1μHz ~ 30MHz
Square
1μHz ~ 5MHz
1μHz ~ 10MHz
1μHz ~ 10MHz
Pulse
500μHz ~ 5MHz
Ramp/Triangular
1μHz ~ 300kHz
Gaussian white noise
>5MHz (-3dB)
>10MHz (-3dB)
>30MHz (-3dB)
Arbitrary
1μHz ~ 5MHz
Resolution
1μHz
Accuracy
Within 90days ±50ppm within 1 year ±100ppm
Temperature coefficient
<5ppm/°C
Square Wave
Rise/fall time
<24ns(10% ~ 90%)
Overshoot
<5%(typical,1kHz,1Vpp)
Duty Cycle
20%~80%
Asymmetric(50% Duty Cycle)
1% of period+20ns(typical,1kHz,1Vpp)
Jitter
500ps + 0.001% of period
Ramp/Triangle Wave
Linearity
<0.1% of Vpp(typical,1kHz,1Vpp,100% symmetric)
Symmetry
0%~100%
Pulse Wave
Pulse width
16ns, Min. 1ns resolution
Rise/Fall time (10% ~ 90%,typical)
20ns~1.6ks
Duty Cycle
0.1% Resolution
Overshoot
<5%
Jitter(pk-pk)
500ps + 0.001% of period
Sine Wave
Harmonic Distortion
DC~1MHz <-60dBc
1MHz~10MHz <-55dBc
10MHz~30MHz <-50dBc
Total harmonic waveform
distortion
DC~20kHz,1Vpp<0.2%
Spurious signal(non-harmonic)
DC~1MHz<-70dBc
1MHz~10MHz<-60dBc
10MHz~30MHz<-55dBc
Phase noise
10kHz Offset,–125dBc/Hz(typical value)

SDG800 Service Manual 3
Arbitrary Wave
Waveform length
16k points
Vertical resolution
14bits
Sample rate
125MSa/s
Min. Rise/Fall time
8ns(typical)
Jitter(pk-pk)
8ns(typical)
Storage in non-volatile RAM
memory (10 in total)
10 waveforms
Output Specification
Amplitude
2mVpp~10Vpp(50Ω, ≤10MHz)
2mVpp~5Vpp(50Ω, >10MHz)
4mVpp ~ 20Vpp（High impedance, <10MHz）
4mVpp ~ 10Vpp（High impedance, >10MHz）
Vertical accuracy (100 kHz sine)
±(1mVpp +0.3dB of setting value)
Amplitude flatness (compared to
100 kHz sine,5Vpp)
±0.3 dB
Impedance
50Ω
Protection
short-circuit protection
DC Offset
Range(DC)
±5V(50Ω)
±10V(High-Z)
Offset accuracy
±(|setting offset value|*1%+3mV)
AM Modulation
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Modulation waveform
Sine, Square, Ramp, Noise, Arbitrary (2mHz ~
20kHz)
Modulation depth
0% ~ 120%
DSB-AM Modulation
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Modulation waveform
Sine, Square, Ramp, Noise, Arbitrary (2mHz ~
20kHz)
Modulation depth
0% ~ 120%
FM Modulation
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Modulation waveform
Sine, Square, Ramp, Noise,
Arbitrary(2mHz~20kHz)
Frequency deviation
0 ~0.5*bandwidth 1mHz resolution
PM Modulation

4SDG800 Service Manual
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Modulation waveform
Sine, Square, Ramp, Noise, Arbitrary
(2mHz~20kHz)
Phase Deviation
0~360°,0.1°Resolution
FSK Modulation
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Modulation waveform
50% duty-cycle square waveform(2mHz~50kHz)
ASK Modulation
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Modulation waveform
50%duty-cycle square waveform(2mHz~50kHz)
PWM Modulation
Frequency
500μHz~20kHz
Modulation waveform
Sine, Square, Ramp, Arbitrary(except DC)
Sweep
Carrier
Sine, Square, Ramp, Arbitrary(except DC)
Type
linear/logarithmic
Direct
Up/down
Sweep time
1ms~500s
Trigger source
Manual, external, internal
Burst
Waveform
Sine, Square, Ramp, Pulse, Arbitrary(except DC)
Type
Count(1~50,000 periods), infinite, Gated
Start/Stop phrase
0°~360°
Internal period
1μs~500s
Gated source
External trigger
Trigger source
Manual, External or Internal
Trigger Input
Input Level
TTL compatible
Slope
Up or down
Pulse width
>100ns
Input impedance
>5kΩ,DC coupling
SYNC Output
Voltage level
TTL compatible
Pulse width
>50ns
Output impedance
50Ω(typical)
Max. frequency
2MHz

SDG800 Service Manual 5
General Specification
Display
Display type
3.5 inch TFT-LCD
Resolution
320×RGB×240
Color depth
24bit
Contrast Ratio
350:1 (typical)
Luminance
300cd/m2(typical)
Power
Voltage
100~240 VACRMS, 50/60Hz
100~120 VACRMS, 440Hz
Consumption
<30W
Fuse
1.25A, 250V
Environment
Temperature
Operation:0°C~40°C
Storage:-20°C ~60°C
Humidity range
Below +35℃:≤90% relative humidity
+35℃~+40℃:≤60% relative humidity
Altitude
Operation: below 3,000 meters
Storage: below 15,000 meters
Electromagnetic
Compatibility
2004/108/EC Directive
Applicable standards EN 61326-1:2006
EN 61000-3-2:2006 + A2:2009
EN 61000-3-3:2008
Safety
2006/95/EC Low Voltage Directive
EN 61010-1:2010
Others
Dimension
Width:229mm
Height:105mm
Depth:281mm
Weight
N.W: 2.6Kg
G.W: 3.4Kg
IP protection
IP2X
Calibration Cycle
1 year

6SDG800 Service Manual
Quick Start
One of the first things you will want to do with your generator is to become
acquainted 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
front-panel 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 Wave
• To Set the Symmetry of a Ramp Wave
• To Configure a Pulse Waveform
• To Configure a Noise Waveform
• To Select “DC Volts”
• To Output a Built-In Arbitrary Waveform
• To Use the Built-In Help System

SDG800 Service Manual 7
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.
• A Quick Start
• A Certification
• A Guaranty Card
• A CD(EasyWave software, DataSheet and Manual)
•A power cord that fits the standard of 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 a few seconds.
The generator powers up in the sine wave function at 1 kHz with an amplitude
of 4Vpeak-to-peak. 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 connected
to the power socket on the rear panel (the power-line voltage is automatically
sensed at power-on). You should also make sure that the generator is
connected to a power source that is energized.
Then, verify that the generator is turned on.

8SDG800 Service Manual
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