Rigol DSG3000B Series User manual

Service Guide
DSG3000B Series RF Signal Generator
Aug. 2020
RIGOL TECHNOLOGIES CO., LTD.

RIGOL
DSG3000B Service Guide I
Guaranty and Declaration
Copyright
© 2020 RIGOL TECHNOLOGIES CO., LTD. All Rights Reserved.
Trademark Information
RIGOL® is the trademark of RIGOL TECHNOLOGIES CO., LTD.
Publication Number
SGG03100-1110
Notices
⚫RIGOL products are covered by P.R.C. and foreign patents, issued and pending.
⚫RIGOL reserves the right to modify or change parts of or all the specifications and pricing policies
at the company’s sole decision.
⚫Information in this publication replaces all previously released materials.
⚫Information in this publication is subject to change without notice.
⚫RIGOL shall not be liable for either incidental or consequential losses in connection with the
furnishing, use, or performance of this manual, as well as any information contained.
⚫Any part of this document is forbidden to be copied, photocopied, or rearranged without prior
written approval of RIGOL.
Product Certification
RIGOL guarantees that this product conforms to the national and industrial standards in China as well
as the ISO9001:2015 standard and the ISO14001:2015 standard. Other international standard
conformance certifications are in progress.
Contact Us
If you have any problem or requirement when using our products or this manual, please contact
RIGOL.
E-mail: se[email protected]m
Website: www.rigol.com

RIGOL
II DSG3000B Service Guide
Safety Requirement
General Safety Summary
Please review the following safety precautions carefully before putting the instrument into operation
so as to avoid any personal injury or damage to the instrument and any product connected to it. To
prevent potential hazards, please follow the instructions specified in this manual to use the instrument
properly.
Use Proper Power Cord.
Only the exclusive power cord designed for the instrument and authorized for use within the local
country could be used.
Ground the Instrument.
The instrument is grounded through the Protective Earth lead of the power cord. To avoid electric
shock, connect the earth terminal of the power cord to the Protective Earth terminal before connecting
any input or output terminals.
Connect the Probe Correctly.
If a probe is used, the probe ground lead must be connected to earth ground. Do not connect the
ground lead to high voltage. Improper way of connection could result in dangerous voltages being
present on the connectors, controls or other surfaces of the oscilloscope and probes, which will cause
potential hazards for operators.
Observe All Terminal Ratings.
To avoid fire or shock hazard, observe all ratings and markers on the instrument and check your
manual for more information about ratings before connecting the instrument.
Use Proper Overvoltage Protection.
Ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the product.
Otherwise, the operator might be exposed to the danger of an electric shock.
Do Not Operate Without Covers.
Do not operate the instrument with covers or panels removed.
Do Not Insert Objects into the Air Outlet.
Do not insert anything into the holes of the fan to avoid damaging the instrument.
Use Proper Fuse.
Please use the specified fuses.
Avoid Circuit or Wire Exposure.
Do not touch exposed junctions and components when the unit is powered on.
Do Not Operate with Suspected Failures.
If you suspect that any damage may occur to the instrument, have it inspected by RIGOL authorized
personnel before further operations. Any maintenance, adjustment or replacement especially to
circuits or accessories must be performed by RIGOL authorized personnel.
Provide Adequate Ventilation.
Inadequate ventilation may cause an increase of temperature in the instrument, which would cause
damage to the instrument. So please keep the instrument well ventilated and inspect the air outlet and
the fan regularly.

RIGOL
DSG3000B Service Guide III
Do Not Operate in Wet Conditions.
To avoid short circuit inside the instrument or electric shock, never operate the instrument in a humid
environment.
Do Not Operate in an Explosive Atmosphere.
To avoid personal injuries or damage to the instrument, never operate the instrument in an explosive
atmosphere.
Keep Product Surfaces Clean and Dry.
To avoid dust or moisture from affecting the performance of the instrument, keep the surfaces of the
instrument clean and dry.
Prevent Electrostatic Impact.
Operate the instrument in an electrostatic discharge protective environment to avoid damage induced
by static discharges. Always ground both the internal and external conductors of cables to release
static before making connections.
Use the Battery Properly.
Do not expose the battery (if available) to high temperature or fire. Keep it out of the reach of children.
Improper change of a battery (lithium battery) may cause an explosion. Use the RIGOL specified
battery only.
Handle with Caution.
Please handle with care during transportation to avoid damage to keys, knobs, interfaces, and other
parts on the panels.

RIGOL
IV DSG3000B Service Guide
Safety Notices and Symbols
Safety Notices in this Manual:
WARNING
Indicates a potentially hazardous situation or practice which, if not avoided, will result
in serious injury or death.
CAUTION
Indicates a potentially hazardous situation or practice which, if not avoided, could
result in damage to the product or loss of important data.
Safety Terms on the Product:
DANGER
It calls attention to an operation, if not correctly performed, could result in
injury or hazard immediately.
WARNING
It calls attention to an operation, if not correctly performed, could result in
potential injury or hazard.
CAUTION
It calls attention to an operation, if not correctly performed, could result in
damage to the product or other devices connected to the product.
Safety Symbols on the Product:
Hazardous Voltage
Safety Warning
Protective Earth
Terminal
Chassis Ground
Test Ground

RIGOL
DSG3000B Service Guide V
Document Overview
Format Conventions in this Manual
1. Key
The key on the front panel is denoted by the format of "Key Name (Bold) + Text Box" in the
manual. For example, FREQ denotes the FREQ key.
2. Menu
The menu items are denoted by the format of "Menu Word (Bold) + Character Shading". For
example, Frequency denotes the "Frequency" menu item under FREQ.
3. Connector
The connectors on the front or rear panel are usually denoted by the format of "Connector Name
(Bold) + Square Brackets (Bold)". For example, [RF OUTPUT 50Ω].
4. Operation Procedures
The next step of the operation is denoted by an arrow "→" in the manual. For example, FREQ →
Frequency denotes pressing FREQ on the front panel first and then pressing Frequency.
Content Conventions in this Manual
The DSG3000B series RF signal generator includes DSG3065B, DSG3065B-IQ, DSG3136B, and
DSG3136B-IQ. This manual takes DSG3136B-IQ as an example to illustrate the functions and
operation methods of DSG3000B series. For details, refer to DSG3000B User Guide .
Manuals of this Product
Quick Guide, User Guide, Programming Guide, Data sheet, etc. For the latest version of this manual,
download it from the official website of RIGOL (www.rigol.com).

RIGOL
VI DSG3000B Service Guide
Contents
Guaranty and Declaration.................................................................................................I
Safety Requirement........................................................................................................ II
General Safety Summary................................................................................................... II
Safety Notices and Symbols ..............................................................................................IV
Document Overview ........................................................................................................ V
Chapter 1 Disassembly and Assembly ........................................................................ 1-1
Notices to Disassembly and Assembly .............................................................................. 1-1
Exploded View Drawing .................................................................................................. 1-2
Disassemble the Rear Support Legs ................................................................................. 1-4
Disassemble the Handle.................................................................................................. 1-5
Disassemble the Brackets................................................................................................ 1-6
Disassemble the Metal Enclosure ..................................................................................... 1-7
Disassemble the Front Protective Covers .......................................................................... 1-8
Disassemble the ATT Module ........................................................................................... 1-9
Disassemble the Shield and Power Supply Board ............................................................. 1-10
Disassemble the Output Signal Cable ............................................................................. 1-11
Disassemble the Front Panel Assembly ........................................................................... 1-12
Disassemble the PCIE Cables......................................................................................... 1-13
Disassemble the Digital Module ..................................................................................... 1-14
Disassemble the OCXO Module...................................................................................... 1-15
Disassemble the RF Module........................................................................................... 1-16
Disassemble the IQ Module........................................................................................... 1-17
Disassemble the Fan..................................................................................................... 1-18
Disassemble the Panel .................................................................................................. 1-19
Disassemble the LCD.................................................................................................... 1-20
Disassemble the Keypad Board...................................................................................... 1-21
Disassemble the Nut Connector ..................................................................................... 1-22
Assembly Procedures.................................................................................................... 1-23
Chapter 2 Troubleshooting&Maintenance.................................................................. 2-1
Basic Troubleshooting..................................................................................................... 2-1
Maintenance.................................................................................................................. 2-4
Environmental Considerations.......................................................................................... 2-5

Chapter 1 Disassembly and Assembly RIGOL
DSG3000B Service Guide 1-1
Chapter 1 Disassembly and Assembly
Notices to Disassembly and Assembly
Notices:
⚫Do not disassemble the instrument unless for working requirement.
⚫Only authorized personnel are allowed to disassemble the instrument.
⚫Cut off the power supply before disassembling the instrument.
⚫Please wear anti-static wrist strap or make other anti-static precaution when disassembling the
instrument.
⚫Please use proper tools and follow the correct steps.
⚫Take care not to deform the metal structure or get hurt when disassembling the metal structures.
Required Tools:
⚫Phillips screwdriver T20/T10
⚫BNC socket wrench
⚫SMA torque wrench
WARNING
Ensure that the power supply is cut off before disassembling the instrument. Only
well-trained professional personnel or qualified personnel are allowed to disassemble
the instrument.

RIGOL Chapter 1 Disassembly and Assembly
1-2 DSG3000B Service Guide
Exploded View Drawing
You need to get a basic understanding of the main parts of the instrument before disassembling and
assembling the instrument. When disassembling or assembling the instrument, please follow the
procedures and take care not to scratch the surfaces of the instrument. This manual mainly illustrates
the disassembly and assembly methods of the DSG3000B series RF signal generator. The exploded
view drawing of DSG3000B (with IQ and OCXO-A08) is shown in Figure 1-1.
Figure 1-1 DSG3000B Exploded View Drawing
Table 1-1 Part Description of DSG3000B Exploded View Drawing
No.
Part Name
No.
Part Name
1
Front Label
30
Rear Support Leg (Top)
2
Front Protective Cover
(Bottom-Left)
31
OCXO Plate
3
Panel
32
Customized Cable BNC-QMA
4
LCD
33
OCXO Module
5
LCD Shield
34
BNC Nut
6
BNC Film
35
Back Label
7
Keypad Film
36
Metal Chassis
8
Customized Cable BNC-QMA
37
M4*8 Torx Pan Head Combination Screw
9
Knob
38
ATT Module
10
Customized Cable BNC(F)-SMA(M)
39
M3*14 Torx Pan Head Combination Screw
11
Front Protective Cover
(Bottom-Right)
40
Customized Cable MCX(M,90
deg)-MCX(M,90 deg)
12
M4*8 Torx Pan Head Screw
41
Customized Cable MCX(M,90
deg)-MCX(M,180 deg)
13
BNC Lock Washer
42
Power Cord Connector
14
Main Key
43
Power Supply Shield
15
PCIE Converter Board
44
M3*20 Torx Pan Head Combination Screw
16
Digital Module
45
M3*18 Torx Pan Head Combination Screw

Chapter 1 Disassembly and Assembly RIGOL
DSG3000B Service Guide 1-3
17
IQ Module
46
DCDC Plate
18
PCIE Converter Cable
47
Power Supply Board
19
Customized BNC(M)-SMA(F)
Connector
48
M3*6 Torx Pan Head Combination Screw
20
Customized N(M)-SMA(F)
49
Fan
21
RF Module
50
Main Keypad Board
22
Customized Cable N(F)-SMA(M)
51
Metal Front Panel
23
Customized Cable MCX(M,90
deg)-SMB(F,180 deg)
52
M4*8 Torx Pan Head Screw
24
Bracket
53
Front Protective Cover (Top-Right)
25
Metal Enclosure
54
Screen Converter Board
26
Mental Arm Brace
55
Keypad Board at the Left Side of Screen
27
Handle
56
Keypad at the Left Side of Screen
28
Rear Support Leg (Bottom)
57
Front Protective Cover (Top-Left)
29
M4*14 Torx Pan Head Screw
--
--
The recommended disassembly procedures are as follows:
Disassemble the Rear Support Legs →Disassemble the Handle →Disassemble the Brackets →
Disassemble the Metal Enclosure →Disassemble the Front Protective Covers →Disassemble the ATT
Module →Disassemble the Shield and Power Supply Board → Disassemble the Output Signal Cable →
Disassemble the Front Panel Assembly → Disassemble the PCIE Cables → Disassemble the Digital
Module → Disassemble the OCXO Module → Disassemble the RF Module → Disassemble the IQ
Module → Disassemble the Fan → Disassemble the Panel → Disassemble the LCD → Disassemble
the Keypad Board → Disassemble the Nut Connector

RIGOL Chapter 1 Disassembly and Assembly
1-4 DSG3000B Service Guide
Disassemble the Rear Support Legs
Figure 1-2 Disassemble the Rear Support Legs
Part Description:
①4 screws (M4*14 torx pan head screw, used for securing the rear support legs)
Disassembly Steps:
1. Use the T20 screwdriver to remove 4 screws (①) that secure the rear support legs.
2. Take off the rear support legs gently.
Note: When assembling the rear support legs, pay attention to the mounting position of support legs.
The support leg with 2 ribs on it should be mounted at the top; whereas the support leg with three ribs
on it should be mounted at the bottom.
①
①
①
①

Chapter 1 Disassembly and Assembly RIGOL
DSG3000B Service Guide 1-5
Disassemble the Handle
Figure 1-3 Disassemble the Handle
Part Description:
①1 metal plate
②1 handle sleeve
③2 handle plate positioning rings
④2 handle positioning plastic components
⑤2 screws (M5*14 torx flat head countersunk screw, used for fastening the handle)
Disassembly Steps:
1. Use the T20 screwdriver to remove 2 screws (⑤) that secure the handle.
2. Remove two handle positioning plastic components, two handle plate positioning rings, and the
handle (consists of the handle sleeve and the metal plate).
Note: When assembling, check whether the metal enclosure has been installed properly.
③
④
⑤
①
②
③
④
⑤

RIGOL Chapter 1 Disassembly and Assembly
1-6 DSG3000B Service Guide
Disassemble the Brackets
Figure 1-4 Disassemble the Brackets
Part Description:
①2 screws (M4*6 torx pan head screw, used for securing the brackets)
②2 brackets
③2 mental arm braces
Disassembly Steps:
1. Use the T20 screwdriver to remove 2 screws (①) that secure the brackets.
2. Take off the brackets gently.
Note: When assembling, install the metal arm braces in the proper direction.
①
①
②
②
③
③

Chapter 1 Disassembly and Assembly RIGOL
DSG3000B Service Guide 1-7
Disassemble the Metal Enclosure
Figure 1-5 Disassemble the Metal Enclosure
Part Description:
①1 metal enclosure
Disassembly Steps:
1. Remove the metal enclosure in the arrow direction (as shown in the figure above).
Note: When assembling the metal enclosure, the side of the metal enclosure with a binding seam
should be placed downward.
①

RIGOL Chapter 1 Disassembly and Assembly
1-8 DSG3000B Service Guide
Disassemble the Front Protective Covers
Figure 1-6 Disassemble Front Protective Covers
Part Description:
①4 screws (M4*8 torx pan head screw, used for fastening the front protective covers)
②4 screws (M4*10 torx pan head screw, used for fastening the front protective covers)
Disassembly Steps:
1. Use the T20 screwdriver to remove 8 screws that secure the front protective covers.
2. Remove the four front protective covers gently.
Note: When assembling the front protective covers, pay attention to the mounting position of front
protective covers. The front protective cover with 2 ribs on it should be mounted at the top; whereas
the front protective cover with one rib on it should be mounted at the bottom.
①
①
①
①
②
②
②
②

Chapter 1 Disassembly and Assembly RIGOL
DSG3000B Service Guide 1-9
Disassemble the ATT Module
Figure 1-7 Disassemble the ATT Module
Part Description:
①3 screws (M3*35 torx pan head combination screw, used for fastening the ATT module)
②2 screws (M3*20 torx pan head combination screw, used for fastening the ATT module)
③3 screws (M3*14 torx pan head combination screw, used for fastening the ATT module)
Disassembly Steps:
1. Use the T10 screwdriver to remove all the screws that secure the ATT module.
2. Remove the ATT module gently.
Tip:
Before disassembling the ATT module, pay attention to the connecting positions of the cables
on the ATT module to avoid incorrect connection or incomplete connection when assembling
the cables.
①x3
②x3
③x3

RIGOL Chapter 1 Disassembly and Assembly
1-10 DSG3000B Service Guide
Disassemble the Shield and Power Supply Board
Figure 1-8 Disassemble the Shield and Power Supply Board
Part Description:
①12 screws (M3*6 torx pan head combination screw, used for fastening the shield and power
supply board)
Disassembly Steps:
1. Disconnect the cables from the power module.
2. Use the T10 screwdriver to remove all the screws that secure the shield and power supply board.
3. Remove the shield gently.
4. Remove the power supply board gently.
Tip:
Before disassembling the power supply module, pay attention to the connecting positions of
the cables on the power supply module to avoid incorrect connection or incomplete
connection when assembling the cables.
①x12

Chapter 1 Disassembly and Assembly RIGOL
DSG3000B Service Guide 1-11
Disassemble the Output Signal Cable
Figure 1-9 Disassemble the Output Signal Cable
Part Description:
①3 output signal cables
②3 BNC nuts
Disassembly Steps:
1. Use the BNC socket wrench to remove the BNC nuts that secure the cables.
2. Remove the output signal cables gently.
Tip:
Before removing the output signal cables, pay attention to the connecting positions of the
cables to avoid incorrect connection or incomplete connection when assembling the cables.
②x3
①x3

RIGOL Chapter 1 Disassembly and Assembly
1-12 DSG3000B Service Guide
Disassemble the Front Panel Assembly
Figure 1-10 Disassemble the Front Panel Assembly
Part Description:
①4 screws (M4*8 torx pan head screw, used for fastening the front panel assembly)
Disassembly Steps:
1. Use the T20 screwdriver to remove all the screws that secure the front metal panel and the front
panel.
2. Remove the front panel assembly gently.
Tip:
Before removing the cables on the front panel assembly, pay attention to the connecting
positions of the cables to avoid incorrect connection or incomplete connection when
assembling the cables.
①x4