SIGLENT SDG5000 series Service Manual

Service Manual

SDG5000 Series
Function/Arbitrary Waveform Generator

2017 SIGLENT TECHNOLOGIES CO., LTD

II SDG5000 Service Manual

SDG5000 Service Manual I

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.

II SDG5000 Service Manual

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.

Do 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

SDG5000 Service Manual III

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

IV SDG5000 Service Manual

Overview for the Document

The document is for SDG5000 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:

SDG5000 Series Generator at a glance

This part introduces the main technology characteristics for SDG5000
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.

SDG5000 Service Manual V

Convention for the whole Contents

All the description for function and performance in this document are according
to SDG5162 series generator, and apply to generator of the other types. The
SDS5000 series contains the following types:

Type

Analog Bandwidth

Channel

SDG5082

80 MHz

2

SDG5122

120 MHz

2

SDG5162

160 MHz

2

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VI

SDG5000 Series at a Glance

SDG5000 Series adopt the direct digital synthesis (DDS) technology, which
can provide stable, high-precision, pure and low distortion signals. 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

Reading the characteristics and specifications given below, you will
understand how SDG5000 can satisfy your requirements.

 DDS technology provides precise, stable and low distortional output signal.
 4.3inch‟TFT color LCD display.
 500MSa/s sampling rate, 14-bit resolution.
 Frequency characteristics:

Sine: 1μHz to 160 MHz

Square: 1μHz to 50 MHz

Ramp: 1μHz to 4MHz

Pulse: 1μHz to 40MHz
White Noise: 100MHz bandwidth (-3dB)
Arbitrary: 1μHz to 40MHz

 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, PWM, Sweep and Burst.

 Multiple I/O: external modulation source, external 10 MHz reference input,

external trigger source, waveform output, synchronous signal output.

 Support USB storage device. Software updating could also be performed

using USB devices.

 Up to 512k sample points of internal waveform depth, which can rebuild or

SDG5000_ServiceManual_SM02050-E02A

VII

simulate any complex waveform.

 Remote control is realized using the USB cable.
 Multiple interfaces: USB host & device. USB-GPIB (IEEE-488) and LAN

(option).

 Support the seamless connection with SIGLENT Series Digital

Oscilloscopes; Being 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

SDG5162.

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VIII

The Front Panel at a Glance

No.

Description

No.

Description

1

Power Switch

7

Universal Knob

2

LCD Display

8

Numeric Keypad

3

Menu Operation

9

Waveform Key

4

Function Keys

10

Type

5

Output Control

11

Logo

6

Direction Keys

12

USB Host

2 3 4 5

11 10 9 8 7

6

1

12

SDG5000_ServiceManual_SM02050-E02A

IX

The Front Panel Display at a Glance

Figure1 Display Interface (Sine Wave is the default waveform)

Here are the character definitions in this Service Manual:

The signs for buttons in this manual are the same as the panel buttons. Please
note that, the signs for the functional buttons on the operation panel are
represented by squared words, such as Waveforms, which represents the
transparent functional key with Sine on it on the front panel, while the menu
buttons are represented by brighten words such as Frequency, which means
the frequency option in the Sine menu.

Function
Status

Channel 1 information

Channel 2 information

Waveform
Parameters

Waveform
Display

Waveform type
operational key

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The Rear Panel at a Glance

1. Ext Trig/Gate/FSK/Burst connector

2. 10MHz Output connector

3. USB Device connector

4. Power Socket

5. 10MHz Input connector

6. Sync Output connector

7. Modulation Input connector

WARNING: For protection from electric shock, the grounding power cord must
not 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.

6 5

1 2 3 4

7

SDG5000_ServiceManual_SM02050-E02A

XI

Contents

Guaranty and Declaration .......................................................................................................... I

General Safety Summary .......................................................................................................... II

Safety Terms and Symbols ...................................................................................................... III

Overview for the Document ..................................................................................................... IV

SDG5000 Series at a Glance .................................................................................................... VI

The Front Panel at a Glance ................................................................................................. VIII

The Rear Panel at a Glance ...................................................................................................... X

Specification .................................................................................................................................. 1

Specifications ........................................................................................................................ 1

General Specifications ........................................................................................................ 7

Quick Start ..................................................................................................................................... 8

Prepare the Generator for Use .......................................................................................... 9

Adjust the carrying Handle .............................................................................................. 10

Set the Output Frequency ................................................................................................ 11

Set the Output Amplitude ................................................................................................. 13

Set the DC offset ................................................................................................................ 14

Set the Duty Cycle of a Square Wave ........................................................................... 15

Set the Symmetry of a Ramp Wave ............................................................................... 16

Generate a Pulse Waveform ............................................................................................ 17

Generate a Noise Waveform ............................................................................................ 19

Set the DC Voltage ............................................................................................................. 21

Output a Built-In Arbitrary Waveform ........................................................................... 22

Use the Built-In Help System .......................................................................................... 23

Calibration .................................................................................................................................... 24

Calibration Interval ............................................................................................................ 24

Adjustment Recommendations ...................................................................................... 24

Automating Calibration Procedures.............................................................................. 24

Recommended Test Equipment ..................................................................................... 25

Test Considerations ........................................................................................................... 25

Performance Verification Test ......................................................................................... 26

DC Output Verification .............................................................................................. 27

AC Amplitude Verification ........................................................................................ 28

Frequency Response Verification .......................................................................... 29

General Adjustment Procedure ...................................................................................... 31

Scripts for Calibration ............................................................................................... 32

Software Environment .............................................................................................. 32

Warming up .................................................................................................................. 32

Channel Adjustment .................................................................................................. 33

Frequency Response Adjustments ....................................................................... 37

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XII

Assembly Procedures ............................................................................................................... 38

Security Consideration ..................................................................................................... 38

List of Modules ................................................................................................................... 39

Required Tools .................................................................................................................... 39

Disassembly Procedures ................................................................................................. 39

A view of the whole Instrument ...................................................................................... 40

Removing the Handle ........................................................................................................ 41

Removing the Metal Shell and Rear Cabinet ............................................................... 42

Removing the Front Cabinet ........................................................................................... 43

Removing the Display Module ........................................................................................ 44

Removing the Main Body ................................................................................................. 45

Troubleshooting ......................................................................................................................... 47

ESD Precautions ................................................................................................................ 47

Required Equipment .......................................................................................................... 47

Channel Board Drawing ................................................................................................... 48

Main Board Drawing .......................................................................................................... 49

Check the Power Supply .................................................................................................. 50

Check the Channel Board ................................................................................................ 52

Voltage Checking ........................................................................................................ 52

FPGA Checking ........................................................................................................... 53

Check the Main Board ....................................................................................................... 54

Voltage Checking ........................................................................................................ 54

Mainboard Clock Checking...................................................................................... 54

DSP/CPLD Checking ................................................................................................. 55

Quick Guide for General Failures .................................................................................. 56

Maintenance ................................................................................................................................ 57

Maintain Summary ............................................................................................................. 57

Repackaging for Shipment .............................................................................................. 58

Contact SIGLENT ............................................................................................................... 59

SDG5000 Service Manual

1

Specification

These specifications apply to SDG5000 series Arbitrary Waveform Generator.
To verify that an oscilloscope meets specifications, it must first meet the
following conditions:

 The generator must have been operating continuously for fifteen minutes

within the specified operating temperature.

 You must perform the Self Adjust operation, accessible through the Utility

menu, if the operating temperature changes by more than 5 °C.

 The oscilloscope must be within the factory calibration interval of one year.

Specifications

Model

SDG5082

SDG5122

SDG5162

Maximum output frequency

80MHz

120MHz

160MHz

Output channels

2

Sample rate

500MSa/s

Arbitrary waveform length

CH1: 16kpts , CH2: 512kpts

Frequency resolution

1μHz

Vertical resolution

14 bits

Modulation

AM, DSB- AM, FM, PM, FSK, ASK, PWM, Sweep, Burst

Frequency counter

Frequency range：100mHz ~ 200MHz

Standard interface

USB Host & Device

Dimension

W x H x D=261mm x 105mm x 344mm

SDG5000 Service Manual

2

Frequency Specification

Model

SDG5082

SDG5122

SDG5162

Waveform

Sine, Square, Ramp, Pulse, Noise, Arbitrary waveform

Sine

1μHz ~ 80MHz

1μHz ~120MHz

1μHz ~ 160MHz

Square

1μHz ~ 30MHz

1μHz ~ 40MHz

1μHz ~ 50MHz

Pulse

1μHz ~ 20MHz

1μHz ~ 30MHz

1μHz ~ 40MHz

Ramp

1μHz ~ 2MHz

1μHz ~ 3MHz

1μHz ~ 4MHz

Gaussian Noise

100MHz (-3dB)

Arbitrary waveform

1μHz ~ 20MHz

1μHz ~ 30MHz

1μHz ~ 40MHz

Resolution

1μHz

Accuracy

within 1 year ±2ppm 0°C ~ 55°C

Square Wave

Rise/Fall time（10% ~ 90%）

6ns

Overshoot

< 3%

Duty
Cycle

1μHz ~ 10 MHz

20% ~ 80%

10 MHz（exclude）~ 40 MHz

40% ~ 60%

40 MHz（exclude）~ 50 MHz

50%

Asymmetric（50% Duty Cycle）

1% of Cycle + 5 ns（typical value）

Jitter (cycle to cycle)

< 100ps（typical value, rms）

Pulse Wave

Period

Maximum: 1000000s Minimum: 25 ns

Pulse width

≥12ns, resolution: 100ps

Rise/Fall time（10% ~ 90%）

6ns ~ 6s, resolution: 100ps

Duty Cycle

0.0001% ~ 99.9999%

Overshoot

< 3%

Jitter (cycle to cycle)

< 100ps（typical value, rms）

Sine Wave Spectrum Purity

Harmonic distortion
DC-1 MHz

<-54dBc

1 MHz - 10 MHz

<-46dBc

10 MHz - 100 MHz

<-36dBc

100 MHz - 160 MHz

<-30dBc

Total harmonic waveform distortion

DC ~ 20 kHz

1Vpp <0.2%

Spurious signal（non-harmonic）
DC ~ 1 MHz

< -70dBc

1 MHz ~ 10 MHz

<-70dBc+6dB/spectrum phase

Phase noise

100kHz Offset, –116dBc / Hz（typical value）

SDG5000 Service Manual

3

Ramp Wave

Linearity

< 0.1% of output Peak value
（typical value, 1 kHz, 1Vpp, symmetric 100%）

Symmetry

0% ~ 100%

Arbitrary Waveform

Channel

CH1

CH2

Waveform length

16kpts

512kpts

Vertical resolution

14 bits

14 bits

Sample rate

500MSa/s

500MSa/s

Minimum Rise/Fall time

5ns（typical value）

5ns（typical value）

Jitter（RMS）

2ns（maximum）

2ns（maximum）

Output Characteristics

Channel

CH1

CH2

Amplitude (50Ω )

1mVpp~ 10Vpp（≤40MHz）

1mVpp ~ 10Vpp（≤40MHz）

1mVpp~5Vpp
（40MHz~100MHz）

1mVpp~5Vpp
（40MHz~100MHz）

1mVpp~2.5Vpp
（100MHz~130MHz）

1mVpp~2.5Vpp
（100MHz~130MHz）

1mVpp ~ 1.5Vpp
（130MHz~160MHz）

1mVpp ~ 1.5Vpp
（130MHz~160MHz）

Vertical resolution
（100 kHz sine waveform）

±（0.3dBm+1mVpp）

±（0.3dBm+1mVpp）

Amplitude flatness（based on
100kHz Sine Waveform, 1Vpp）

≤10MHz, ±0.1 dB

≤10MHz, ±0.1 dB

≤60MHz, ±0.2 dB

≤60MHz, ±0.2 dB

≤100MHz, ±0.4 dB

≤100MHz, ±0.4 dB

≤160MHz, ±0.8 dB

≤160MHz, ±0.8 dB

Isolate channel depth

< -80dB

Channel delay

< 1ns

DC

Output characteristic

CH1

CH2

Range（DC）

±5 V（50ohm）
±10 V（high resistance）

±5 V（50ohm）
±10 V（high resistance）

Offset accuracy

±（1%*|setting offset |+1 mV）

±（1%*|setting offset |+1 mV）

SDG5000 Service Manual

4

Waveform Output

Channel

CH1/CH2

Impedance

50Ω (typical value）

Protection

short-circuit protection

Isolation

The BNC connectors for channel output, synchronous and modulation input
are isolated to the Re Rack Earth, and the allowable voltage range is ±
42Vpk

AM/DSB-AM Modulation（CH1/CH2）

Carrier

Sine, Square, Ramp, Arbitrary（except DC）

Source

Internal/External

Modulated wave

Sine, Square, Ramp, Noise, Arbitrary

Modulation depth

0% ~ 120%

Modulation frequency

1mHz~50kHz

FM Modulation（CH1/CH2）

Carrier

Sine, Square, Ramp, Arbitrary（except DC）

Source

Internal/External

Modulation waveform

Sine, Square, Ramp, Noise, Arbitrary

Modulation frequency

1mHz ~ 50kHz

PM Modulation（CH1/CH2）

Carrier

Sine, Square, Ramp, Arbitrary（except DC）

Source

Internal/External

Modulation waveform

Sine, Square, Ramp, Noise, Arbitrary

Modulation frequency

1mHz ~ 50kHz

Phase deviation

0 ~ 360°

FSK Modulation（CH1/CH2）

Carrier

Sine, Square, Ramp, Arbitrary（except DC）

Source

Internal/External

Modulation waveform

50% duty square waveform

Key frequency

1mHz ~ 1MHz

ASK Modulation（CH1/CH2）

Carrier

Sine, Square, Ramp, Arbitrary（except DC）

Source

Internal/External

Modulation waveform

50% duty square waveform

Key frequency

1mHz ~ 1MHz

PWM Modulation (CH1/CH2)

Carrier

Pulse

Source

Internal/External

Modulation waveform

Sine, Square, Ramp, Noise, Arbitrary

Modulation frequency

1mHz ~ 50kHz

Sweep（CH1/CH2）

Carrier

Sine, Square, Ramp, Triangle, Arbitrary (except DC)

SDG5000 Service Manual

5

Type

linear/logarithmic

Direction

Up/ down

Sweep time

1ms ~ 500s ± 0.1%

Trigger source

Manual, external, internal

Burst（CH1/CH2）

Waveform

Sine, Square, Ramp, Pulse, Noise, Arbitrary (except DC)

Carrier frequency

2mHz ~ 100MHz

Type

Count（1 ~ 1000000 cycles）, infinite, Gated

Start/Stop phase

0° ~ 360°

Internal cycle

1μs ~ 1000s ± 1%

Trigger delay

296ns ~ 34s

Gated source

External trigger

Trigger source

Manuel, External or Internal

External Modulation Input

Connector

The rear panel BNC connector, isolated to the Re Rack Earth

Input amplitude

± 4.5Vpk=100% modulation, input impedance >5kΩ

The external input voltage can‟t be over ± 5Vpk, or the instrument will get damaged.

Trigger Input

Connector

The rear panel BNC connector, rack (reference)

Voltage level input

TTL compatible

Slope

Up or down (optional)

Pulse width

> 50 ns

Input impedance

> 5kΩ, DC coupling

Response time

380ns（typical value）

Trigger Output

Connector

The rear panel BNC connector, rack (reference)

Voltage level

TTL compatible

Pulse width

> 60ns（typical value）

Output impedance

50Ω（typical value）

Maximum frequency

1 MHz

SYNC Output

Connector

The rear panel BNC connector, isolated to the Re Rack Earth

Voltage level

TTL compatible

Pulse width

> 50 ns（typical value）

Output impedance

50Ω（typical value）

Maximum frequency

10MHz

SDG5000 Service Manual

6

REFCLK Input(10MHz ~ In)

Connector

The rear panel BNC connector, isolated to the Re Rack Earth and all the
other connectors.

Lock range

10MHz ± 50Hz

Signal level

2.3Vpp ~ 3.3Vpp

Lock Time

< 2 s

Input impedance

1KΩ, AC coupling

REFCLK Input(10MHz ~ Out)

Connector

The rear panel BNC connector, rack (reference)

Output frequency

10MHz

Signal level

>1Vpp

Output impedance

50Ω, AC coupling

Frequency Counter

Measurement

Frequency, Period, positive/negative Pulse Width, Duty Cycle

Frequency range

Single Channel: 100mHz ~ 200 MHz

Frequency resolution

6 bits/s

Voltage range and sensitivity(non-modulated signal）

Manual

DC coupling

DC deviation range

±1.5 VDC

100mHz ~ 100 MHz

50mVrms ~ ±2.5V

100 MHz ~ 200 MHz

100mVrms ~ ±2.5V

AC coupling

1 Hz ~ 200 MHz

100mVrms ~ 5Vpp

Pulse Width and Duty
measurement

6Hz ~ 10MHz（80mVrms ~ 5Vpp）

Input adjustment
Input impedance

1 MΩ

Coupling mode

AC/DC

HFR

On/Off

Trigger method

Trigger level range: -3 v ~ 1.8v

SDG5000 Service Manual

7

General Specifications

Display

Display type

4.3‟TFT-LCD

Resolution

480×RGB×272

Color

24bit

Contrast（typical value）

500:1

Backlight intensity (typical )

300cd/m2

Power

Voltage
100~240 VACRMS, 45~66 Hz, CATII

100~127 VACRMS, 45~440 Hz, CATII

Power

< 30W

Fuse

1.25A, 250V

Environment

Environmental Temperature
Operation: 0°C ~ 40°C

Non-operation: -20°C ~ 60°C

Cooling method

natural cooling down

Humidity range
Below +35℃: ≤90％ relative humidity

+35℃ ~ +40℃: ≤60％ relative humidity

Altitude
Operation: < 3,000m

Non-operation: <15,000m

Mechanical

Dimension
Width: 261mm

Height: 105mm

Depth: 344mm

Weight

N.W: 2.8 Kg

IP Protection

IP2X

Calibration Cycle

1 year

SDG5000 Service Manual

8

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

SDG5000 Service Manual

9

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 Calibration Certificate
 A CD(EasyWave software, Datasheet and User 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 (Channel 1). 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.

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

SDG5000 Service Manual

10

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

SDG5000 Service Manual

11

Set the Output Frequency

The following steps show you how to change the frequency to 20 KHz.

1. Press the Store/Recall softkey

Press the Store/Recall softkey to enter the parameter set interface. The
waveform parameters including Frequency/Period, Amplitude/HighLevel,
Offset/LowLevel and Phase are for you 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 you change the function, the same frequency is
used if the current value is valid for the new waveform. If you want to set the
period, press the softkey again to switch to the period parameter

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

SDG5000 Service Manual

12

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

Note: You can also enter the desired value using the knob and direction keys.

SDG5000 Service Manual

13

Set the Output Amplitude

The following steps show you how to change the amplitude to 8Vpp.

1. Press the Ampl/HLevel softkey

The displayed amplitude is either the power-on value or the amplitude
previously selected. When you change the function, the same amplitude is
used if the current value is valid for the new waveform. If you want to set the
HLevel for the waveform, press the softkey again to switch to the HLevel
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.

Note: You can also enter the desired value using the knob and direction keys.

SDG5000 Service Manual

14

Set the DC offset

The following steps show you how to change offset to 1Vdc.

1. Press the Offset/LLevel softkey

The displayed offset is either the power-on value or the offset previously
selected. When you change the function, the same offset is used if the current
value is valid for the new waveform. If you want to set the LLevel for the
waveform, press the softkey again to switch to the LLevel 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.

Note: You can also enter the desired value using the knob and direction keys.

SDG5000 Service Manual

15

Set the Duty Cycle of a Square Wave

At power-on, the default duty cycle for square wave is 50%. You can adjust the
duty cycle from 20% to 80% for output frequencies up to 50 MHz. The following
steps show you how to change the duty cycle to 80%.

1. Select the square wave function

Press Square button and then select the desired output frequency to any value
up to 50 MHz.

2. Press the Duty softkey

Firstly you should press Store/Recall button to enter the parameter setting
interface. 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 “%”.

SDG5000 Service Manual

16

Set the Symmetry of a Ramp Wave

At power-on, the Symmetry for Ramp wave is 50%. You can adjust the
symmetry from 0% to 100%. The following steps show you how to change the
symmetry to 60%.

1. Select the Ramp wave function

Press Ramp button and then select the desired output frequency to 4MHz.

2. Press the Symmetry softkey

Firstly you should press Store/Recall button to enter the parameter setting
interface. The displayed symmetry is either the power-on value or the
percentage previously selected.

.

3. Input the desired symmetry

Use 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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Generate a Pulse Waveform

You can set the generator to output a pulse waveform with variable width, edge
time and delay time. The following steps show you how to generate a 500 µs
pulse waveform with a pulse width of 100 µs, rise time of 8ns and delay time of
50 ns.

1. Select the pulse function

Press the Pulse button 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 Width/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 to the 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 rise edge to 8 ns.

5. Set the Pulse Delay

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

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Generate a Noise Waveform

You can set the generator to output a noise waveform with Stdev and Mean.
The following steps show you how to generate a noise waveform with 500mV
Stdev and 1mV Mean.

1. Select the Noise function

Press the Noise button 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 500mV.

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3. Set the Mean

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

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Set the DC Voltage

You can set the DC Voltage feature from the Utility Menu, and then set a dc
voltage as an “Offset” value. The following steps show you how to set a dc
voltage with +1Vdc.

1. Select the Store/Recall function
Press the Store/Recall button to enter the parameter setting interface.

2. Set the DC Voltage
Press the DC button to select the DC function and output a DC waveform

with the default parameter.

3. Set the DC Offset

Press the Offset softkey and then set the offset to 1V.

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Output a Built-In Arbitrary Waveform

There are 36 built-in arbitrary waveforms stored in non-volatile memory. The
following steps show you how to output the built-in “exponential fall” waveform
from the front panel.

1. Set the arbitrary waveform function
Press the Arb button to select the arbitrary waveform function. Then

press the Built-In softkey 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

Rotate the knob to select the ExpFall waveform and press the Done softkey.

The waveform is output with the present settings unless you change them.

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Use the Built-In Help System

The built-in help system is designed to provide context-sensitive assistance of
some functions. A list of help topics is also available to assist you with several
operations.

1. Read the help information for SDG5000

Press Help button in utility system, you will see a list of help topics as below.
With easy operations on the front panel, you could read any help item you
desired.

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

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Calibration

This calibration procedure contains performance verification procedure and
adjustment procedure. After receiving a generator, it is recommended to first
confirm that the performance meets the published specifications by following
the performance verification process. If the instrument performance is outside
of the specifications, then perform the appropriate calibration adjustments to
correct the issues.

Calibration Interval

The instrument should be calibrated on a regular interval determined by the
measurement accuracy requirements of your application. A 1-year interval is
adequate for most applications. Accuracy specifications will remain valid only if
performance verification is made at regular calibration intervals. Accuracy
specifications are not valid beyond the1-year calibration interval. SIGLENT
does not recommend extending calibration intervals beyond 2 years for any
application.

Adjustment Recommendations

Specifications are valid only within the period from the last performance
verification. Whatever calibration interval you select, SIGLENT recommends
that re-adjustment should always be performed within the calibration interval.
This is necessary to ensure the accuracy of the performance data measured
during the calibration interval.

Automating Calibration Procedures

The complete verification and adjustment procedures can be automated with
the use of appropriate automated test instrumentation. The complete
instrument configurations specified for each test may be programmed via the
remote interface. Verification data can then be read-back from the instrument
into a test program and compared to the appropriate test limit values.

The instrument can also be adjusted from the remote interface. Remote
adjustment is similar to the local front-panel procedure. A PC can be used to
perform the adjustment by first selecting the required function and range. The
adjustment command is sent to the instrument and then the adjustment is
initiated over the remote interface.

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Recommended Test Equipment

The test equipment recommended for the performance verification and
adjustment procedures is listed below. If the exact instrument is not available,
substitute with an instrument of equivalent accuracy.

Instrument

Requirements

Recommended Model

Digital Multimeter(DMM)

DC volts
accuracy: 100ppm
resolution: 100 μV

Agilent 34401A/34461A
Power Meter

Frequency:
10KHz to 50MHz

Agilent U2004A
GPIB cable

GPIB(IEEE488)

Frequency Counter

Accuracy: 0.5ppm

Test Considerations

For optimum performance, all procedures should comply with the following
recommendations:

 Updating SDG‟s firmware to the newest version is strongly recommended.
 Assure that the ambient temperature is stable and between 18℃ and 28℃.

Ideally, the calibration should be performed at 23℃±1℃.

 Assure ambient relative humidity is less than 80%.

 Allow a 30 minutes warm-up period before verification or adjustment.

 Keep the measurement cables as short as possible, consistent with the

impedance requirements.

 Use a 50Ω coaxial cable.

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Performance Verification Test

The performance verification tests are recommended as acceptance tests
when you first receive the instrument. The acceptance test results should be
compared against the specifications given in chapter 1. After acceptance, you
should repeat the performance 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 channel 1
output of 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, and
measure the output voltage with the DMM. Be sure the generator output
impedance is set to High–Z and the output is enabled.

DC Offset

CH1

CH2

Spec Range

± (1% + 2 mV)

0 mV

-2 mV ~ 2 mV

10 mV

7.9 mV ~ 12.1 mV

100 mV

97 mV ~ 103 mV

1 V

0.988 V ~ 1.012 V

3 V

2.968 V ~ 3.032 V

10 V

9.898 V ~ 10.102 V

-10m V

-12.1 mV ~ -7.9 mV

-100 mV

-103 mV ~ -97 mV

-1 V

-1.012 V ~ -0.988 V

-3 V

-3.032 V ~ -2.968 V

-10 V

-10.102 V ~ -9.898 V

4. Move the BNC cable to CH2 output and perform the same verification as

channel 1.

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

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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 under the CH1/CH2 menu.

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. Move the BNC cable to CH2 output and perform the same verification as

channel 1.

5. Compare the value measured from the DMM to the spec range shown in the

table 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 50Ω under the CH1/CH2 menu.

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

then step through the frequencies listed below in sequence. Then, set the
amplitude to 2.5V and repeat the frequency steps.

Voltage

1V

Frequency

CH1 (dBm)

CH2 (dBm)

Value

Spec Range

Value

Spec Range

10KHz

V1

3.8833 ~ 4.0744

V2

3.8833 ~ 4.0744

100KHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

1MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

5MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

10MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

20MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

30MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

50MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

80MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

100MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

110 MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

120 MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

160MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

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Voltage

2.5V

Frequency

CH1 (dBm)

CH2 (dBm)

Value

Spec Range

Value

Spec Range

10KHz

V1

11.8474 ~ 12.0281

V2

11.8474 ~ 12.0281

100KHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

1MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

5MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

10MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

20MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

30MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

50MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

80MHz

V1-0.2 ~ V1+0.2

V2-0.2 ~ V2+0.2

100MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

110 MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

120 MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

160MHz

V1-0.8 ~ V1+0.8

V2-0.8 ~ V2+0.8

4. Move the BNC cable to CH2 output and perform the same verification as
channel 1.

5. Compare the value measured from Power Meter to the spec range shown in
the table above.

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General Adjustment Procedure

This chapter explains how to adjust the SDG5000 series generator for
optimum operating performance.

 Channel Adjustment which includes three steps: feedback channel

adjustment, channel self adjustment and vertical accuracy calibration.

 Feedback channel Adjustment which act as a standard calibration

module, providing the accuracy assurance for Self Adjust.

 Channel Self Adjustment which includes internal control channel

adjustment and signal channel adjustment.

 Vertical Accuracy Calibration which calibrates the amplitude at low

frequency.

 Frequency Response Adjustment which could properly compensate the

amplitude as the frequency increases.

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Scripts for Calibration

SIGLENT provides a free suite for calibrating SDG series products, in which all

scripts are written in Python. Customers can download the package from the
website and just run the scripts to complete the whole calibration process after
some preparation works. For more information, please refer to the instructions
accessible in the provided package.

Download Link:
http://www.siglentamerica.com/prodcut-gjjrj.aspx?id=4705&tid=16&T=2

Software Environment

1. Python

Make sure you have installed Python 2.7 in your computer. The following
modules of Python are required as well: PyVISA, PyQt4 and PyWin32.

2. Microsoft Office

As test reports are saved as „.xls‟, it is necessary that you are working with MS

Office 2003 or higher version.

3. NI VISA

The Python module, PyVISA, is based on the National Instruments VISA I/O
library which can be downloaded from online by searching for PyVISA.

Warming up

Before performing the adjustment procedures, let the generator and other test
equipment warm up for at least 30 minutes in an ambient temperature between
18 °C and 28 °C. Adjustments performed prior to warm-up or outside this
temperature range may result in poor performance.

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Channel Adjustment

The channel adjustment includes three parts: feedback channel adjustment,
channel self adjustment and vertical accuracy calibration.

1. Turn on the generator.

2. Connect the DMM, PC and SDG5000 generator as shown below:

3. Double click and run the script ChannelAdjust.py prepared previously.

Then change the channel connection according to the prompt message.

Note:

If there is a problem in the process of the channel adjustment, you can
separately perform the three parts mentioned above. After the feedback
channel adjustment has been completed, perform a self adjustment. Then
perform the vertical accuracy calibration.

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Feedback Channel Adjustment

The internal feedback channel receives the feedback signal from all the other
channels that are performing self adjustment. This adjustment acts as a
standard test module and must be performed prior to Self Adjust to make sure
it is performed based on a best adjusting accuracy.

1. Connect the DMM, PC and SDG5000 generator as shown below:

2. Double click and run the script FeedbackAdjust.py prepared previously.

The CH1 will be automatically turned on upon running of the script.

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Channel Self Adjustment

1. This adjustment is for internal control channel and signal channel. Through

feedback circuits of the feedback channel and signal channel, this
adjustment helps to obtain the actual working performance for components
from signal channels. After the feedback channel adjustment completed,
disconnect the two BNC cables on channel 1 and channel 2.

2. Select “Self Adjust” to perform the channel Self Adjustment in Test/Cal

system under the Utility menu.

3. Once the “Self Adjust” begins, the generator turns to adjustment interface

and the progress bar displays on the screen. In about 15 seconds it will
reach to 100%, which indicates completing of the self-adjust. You could
press any functional button to exit.

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Vertical Accuracy Calibration

This adjustment aims to calibrate the amplitude at low frequency, using a DMM
with high precision. The SDG5000 begins this portion of the calibration after
the completion of the self adjustment process. It calibrates the Sine wave with
a 10 kHz frequency and selects several amplitudes to calibrate. Compare the
measured amplitude and the standard to obtain a set of compensation values.

1. Connect the DMM, PC and SDG5000 generator as shown below:

2. Double click and run the script VertAccCalib.py prepared previously.

3. Change the channel connection according to the prompt message.

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Frequency Response Adjustments

This adjustment aims to obtain the actual frequency response characteristics
of the signal channel, thus to perform appropriate compensation. Since the
waveform amplitude will decrease as the input frequency increases, it is
essential to compensate for the amplitude to match it to the frequency. This
adjustment should be performed after the channel adjustment.

1. Turn on the generator and connect it to PC using a USB cable.

2. Connecting the USB end of the Power Meter to the USB port of the PC,

upon which the Power Meter indicator light will be brightened. Only after the
indicator light goes out from red, could it be connected to the generator
output.

3. Run the script FrqRespCalib.py prepared previously. In approximately 10

seconds the prompt message will display on the screen to indicate the
operator to connect the Power Meter. After the generator completes the
adjustment for CH1, the prompt message displays on the screen will
prompt the operator to remove the BNC cable to CH2 to start adjustment.

4. After the two channel adjustment completed, please disconnect all

connections.

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Assembly Procedures

This chapter describes how to remove the major modules from the SDG5000
series generator. To install the removed modules or replace new modules,
please follow corresponding operating steps in reverse order.

The following contents are what mainly included in this chapter:

 Security Consideration which describes security information needed to

considerate while operating.

 List of Module 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 and

install the modules

Security Consideration

Only qualified personnel should perform the disassembly procedures.
Whenever possible, disconnect the power before removing or replacing the
modules. Otherwise, any 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 the oscilloscope, and then wait at least three minutes for the capacitors in
the oscilloscope to discharge before you begin disassembly.

Preventing ESD Almost all electrical components can be damaged by
electrostatic 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.

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 Minimize handling.
 Keep replacement parts in original static-free packaging.
 Remove all plastic, foam, vinyl, paper and other static-generating 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

Module

1

Handle

2

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 oscilloscope:
 PH2 phillips screwdriver

Disassembly Procedures

This section describes how to remove and install the modules listed above in
the generator in detail. Complete disassembly will be best achieved through
the following operating steps.

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A view of the whole Instrument

The disassembly drawing are shown as below for you to disassemble the
generator in right steps. Before disassembling, please cut the power to avoid
any personal injuries or damages to inside components. Since some modules
of the instrument are sharp, you should also take care while operating to
prevent being scratched.

Table 4-1 A view of the whole instrument

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Removing the Handle

Table 4-2 Removing the handle

Removing steps:
Pull down the handle hard from the two sides of the generator.

To install the handle, please operate as the reverse steps.

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Removing the Metal Shell and Rear Cabinet

Table 4-3 Removing the Metal Shell and Rear Cabinet

Removing steps:

1. Remove the two screws from the rear cabinet of the generator using a PH2

phillips screwdriver.

2. Remove the rear cabinet.

3. Remove the metal shell carefully from the main body to avoid being

scratched.

To install the metal shell and rear cabinet, please operate as the reverse steps.

Rear Cabinet screw

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Removing the Front Cabinet

Table 4-4 Removing the Front Cabinet

Removing steps:

1. Remove the four front cabinet screws using the PH2 screwdriver.

2. Firmly pull up the two screws connected to the main board from the front

panel BNC connectors.

3. Disconnect the display module cable and the USB module cable from the

main board.

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

To install the front cabinet, please operate as the reverse steps.

Front Cabinet screw

BNC Connector

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Removing the Display Module

Table 4-5 Removing the display module screws

Removing steps:

1. Remove the six screws fixed the keypad circuit board using the PH2 screw

driver.

2. Remove the two screws fixed the USB module using the PH2 screwdriver.

3. Remove the four screws fixed the metallic support using the PH2

screwdriver.

4. Remove the keypad circuit board, silica gel soft keypad, metallic support

and LCD screen from the front cabinet in sequence.

5. Remove the front cabinet universal knob by firmly pull it out.

To install the display module, please operate as the reverse steps.

Keypad Board screw

USB screw

Metallic Support screw

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Removing the Main Body

Table 4-6 Disconnecting all the cables

Table 4-7 Removing all the screws

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Removing steps:

1. Disconnect all cables from the main board and power supply board.

2. Remove all the 20 screws fixed the main board and power supply board

using a the PH2 screwdriver.

3. Separate the main board and power supply board carefully from the main

body of the generator to avoid being scratched by the sharp metal edge.

To install the main body, please operate as the reverse steps.

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Troubleshooting

The internal structure of the generator consists of main board, channel board
and power supply board, and they are linked through cables or connectors.
This chapter explains the main checking procedures for these three boards by
measuring the rated test points on them, thus to help you decide the reason for
the failure you encounter while operating SDG5000 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 result
from ESD.

 Touch circuit boards by the edges as possible as you can.
 Reduce handling of static-sensitive modules when necessary. .
 Wear a grounded antistatic wrist strap to insulate the static voltage from

your body while touching these modules.

 Operate static-sensitive modules only at static-free areas. Avoid handling

modules in areas that allow anything capable of generating or holding a
static charge.

Required Equipment

The equipment listed in the table are required to troubleshoot the generator.

Table 5-1 Required equipment

Equipment

Critical Specifications

Example

Digital Multimeter

DC Accuracy

±0.015%

SIGLENT SDM3055

Oscilloscope

300MHz Bandwidth

SIGLENT SDS2304X

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Channel Board Drawing

Channel board is a kind of signal conditioning board for output analog signal. It
mainly works on the adjusting of signal parameters such as frequency,
amplitude. Please refer to the following drawing to quickly locate the test points
on the channel board for easy resolution of the failures you encounter.

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Main Board Drawing

Main board is used to control and manage the whole internal system of the
generator. It completes the GUI function, controlling and configuration function
for channel board as well as man-machine interaction. Please refer to the
following drawing to quickly locate the test points on the main board for easy
resolution of the failures you encounter.

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Check the Power Supply

There are two power connectors through which the channel board and main
board can be supplied electricity. For the channel board, there are four voltage
test points on its power connector. For the main board, there is one test point.

Before performing the power supply testing procedure, please make sure that
the 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, or you may probably suffer from electric shock
or burn. Here are procedures for testing the power supply:

1. Disconnect the power cord of the generator and then check whether the
fuse has been burnt out.

2. Remove metal shell of the generator using a driver, and then disconnect the
power connector connected to the main board.

3. Focus on the Power Connector for channel board, which contains 6 pins
from Pin1 to Pin6. Since two of the six pins are ground wire, you can test the
other four pins that are marked with blue, yellow, red and white to check
whether the voltage value is within the corresponding specified range using
a digital multimeter. The voltage parameters to be tested are listed in table
below:

Table 5-2 Test voltages for the channel board power connector

Voltage value

Pins

Error limit

15.5V

VH+(red)

±5%

-16.5V

VH-(white)

±5%

5.5V

VL+(yellow)

±5%

-6.5V

VL-(blue)

±5%

Table 5-3 Test voltage for the main board power connector

Voltage value

Pins

Error limit

6.5V

VH+(red)

±5%

If each tested voltage value is within the corresponding spec range referring to
the table above, then the power supply works normally. Otherwise, it proves to
be faulted, please return it to the factory to have it repaired or contact
SIGLENT.

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Note: The main power supply provides an input fuse to protect against the
danger 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
that 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 you want to remove the main board from the metal shelf inside the generator,
you‟d better place it on a clean, insulated mat. In addition, to avoid some chips
or components on the main board being damaged for overheating, it is
essential to cool the main board whenever possible using a fan. Here are
procedures for testing the main board:

1. Several kinds of connectors including Fan Connector, Power Connector and

Keypad Connector are located on the main board. Check if all these
connectors are connected properly.

2. Make sure that the connectors on the channel 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 below:

Voltage Checking

Test the voltage points on the channel board in the table below. If each tested
voltage value is within the corresponding spec range referring to the table
above, then the main board works normally. Otherwise, it proves to be faulted,
please return it to the factory to have it repaired or contact SIGLENT.

Table 5-3 Test voltages of the channel board

Test point

Voltage value

Error limit

+15V

+15V

±5%

-15V

-15V

±5%

-5V

-5V

±5%

+5V

+5V

±5%

VCC3.3V

+3.3V

±5%

VCC5V

+5V

±5%

VCC1.8V

+1.8V

±5%

VCC1.2V

+1.2V

±5%

FAN_12V

+12V

±5%

PLL_3.3V

+3.3V

±5%

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FPGA Checking

To check if the FPGA works normally, please look at the test point marked with
FPGA_LED on the channel board drawing. The LED light twinkles at the
frequency of 1Hz in normal case, if it cannot be lighted or twinkles at incorrect
frequency, then the FPGA may be faulted.

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Check the Main Board

If you want to remove the main board from the metal shelf inside the generator,
you‟d better place it on a clean, insulated mat. In addition, to avoid some chips
or components on the main board being damaged for overheating, it is
essential to cool the main board whenever possible using a fan. Here are
procedures for testing the main board:

1. Several kinds of connectors including Fan Connector, Power Connector and

Keypad Connector are located on the main board. Check if all these
connectors are connected properly.

2. Make sure 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 below:

Voltage Checking

Test the voltage points on the main board in the table below. If each tested
voltage value is within the corresponding spec range referring to the table
above, then the main board works normally. Otherwise, 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 main board

Test point

Voltage value

Error limit

+16V

+16V

±5%

3.3V

+3.3V

±5%

VCC5V

+5V

±5%

VCC1.2V

+1.2V

±5%

Mainboard Clock Checking

Mainboard clock is the internal system clock of the generator. To verify if the
clock on the main board works normally, please test the clock frequency listed
below using an oscilloscope.

Test point

Frequency

Stability

Clock_25MHz

25MHz

±50ppm

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DSP/CPLD Checking

DSP and CPLD respectively represent the main control chip and
programmable logic device of the main board. Only when the corresponding
codes loaded successfully, can the two chips work normally.

Look at the DSP_LED/CPLD_LED light on the main board, which indicates the
working state of DSP/CPLD chip. If the light turns on, then the corresponding
codes have been loaded successfully and the chip is in good working state.
Otherwise, there may be failure within it.

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Quick Guide for General Failures

The general hardware failures are described in the following. Reading the
following information can help you quickly handle some easy hardware failures
with more convenience.

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 usable.
(3) Check whether the fuse has been burnt out. If the fuse needs to be

changed, please contact SIGLENT as soon as possible and return the

instrument to the factory to have it repaired by qualified personnel.
(4) Check if the power connector is properly connected to the main board.
(5) If the instrument still does not work normally, please contact SIGLENT.

2. The instrument starts up with a dark screen:

(1) Check if the power connector is properly connected to the main board.
(2) Test if the voltages on the test points marked “-5V” and “LED_ANODE”

are within the spec range.
(3) If the instrument still does not work normally, please contact SIGLENT.

3. No response after pressing any button or abnormal display of the
screen:

(1) Check if the two end of the connector between the keypad circuit board

and the main board is properly connected.

(2) If the instrument still does not work normally, please contact SIGLENT.

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Maintenance

Maintain Summary

SIGLENT warrants that the products it manufactures and sells are free from

defects in materials and workmanship for a period of three years from the date
of shipment from an authorized SIGLENT distributor. If a product or CRT
proves defective 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 particular
purpose. In no case shall SIGLENT be liable for indirect, special or
consequential damages.

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Repackaging for Shipment

If the unit needs to be shipped to SIGLENT for service or repair, be sure to:

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 around
all sides for the instrument. Use static-free packaging materials to avoid
additional damage to your unit.

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Contact SIGLENT

North America

SIGLENT Technologies America, Inc

6557 Cochran Rd Solon, Ohio 44139
Tel: [phone]
Toll Free:877-515-5551
Fax: [phone]

[e-mail]
www.siglentamerica.com

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 3661 5186
Fax:+ 86 755 3359 1582

[e-mail]
www.siglent.com/ens

Europe

SIGLENT TECHNOLOGIES EUROPE GmbH

Liebigstrasse 2-20, Gebaeude 14, 22113 Hamburg Germany
Tel: [phone]
Fax: [phone]

[e-mail]
www.siglenteu.com