SSA5000X
Spectrum Analyzer
Service Manual
EN_01BCopyright and Declaration
Copyright
SIGLENT TECHNOLOGIES CO., LTD All Rights Reserved.

Trademark Information
SIGLENT is the registered trademark of SIGLENT TECHNOLOGIES CO., LTD

Declaration
SIGLENT products are protected by patent law worldwide
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 inconnection 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.

SSA5000A Service ManualIImportant Safety Information
This manual contains information and warnings that must be followed by the user for safe
operation and to keep the product in a safe condition.

General Safety Summary
Carefully read the following safety precautions to avoid personal injury and prevent damage tothe instrument and any products connected to it. To avoid potential hazards, please use theinstrument as specified.
To Avoid Fire or Personal Injury.
Use Proper Power Line.
Only use a local/state approved power cord for connecting the instrument to mains powersources.
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 highvoltage. 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 signed instructions of the instrument.
Before connecting the instrument, please read the manual carefully to gain more information about
the ratings.
Equipment Maintenance and Service.
When the equipment fails, please do not dismantle the machine for maintenance. The equipment
contains capacitors, power supply, transformers, and other energy storage devices, which may
cause high voltage damage. The internal devices of the equipment are sensitive to static electricity,and direct contact is easy to cause irreparable damage to the equipment. It is necessary to returnto the factory or the company's designated maintenance organization for maintenance.
Be sure to pull out the power supply when repairing the equipment. Live line operation is strictly
prohibited. The equipment can only be powered on when the maintenance is completed and themaintenance is confirmed to be successful.
Identification of Normal State of Equipment.
II

SSA5000A Service ManualAfter the equipment is started, there will be no alarm information and error information at theinterface under normal conditions. The curve of the interface will scan from left to right freely; if
there is a button in the scanning process or there is an alarm or error prompt, the device may be in
an abnormal state. You need to view the specific prompt information. You can try to restart thesetting. If the fault information is still in place, do not use it for testing. Contact the manufacturer orthe maintenance department designated by the manufacturer to carry out maintenance to avoid
the wrong test data caused by the use of the fault or endanger the personal safety.
Not Operate with Suspected Failures.
If you suspect that there is damage to the instrument, please let qualified service personnel checkit.
Avoid Circuit or Wire Exposed 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.
Not to use the equipment for measurements on mains circuits, not to use the equipment formeasurements on voltage exceed the voltage range describe in the manual. The maximum
additional transient voltage cannot exceed 1300V.
The responsible body or operator should refer to the instruction manual to preserve theprotection afforded by the equipment. If the equipment is used in a manner not specified by
the manufacturer, the protection provided by the equipment may be impaired.
Any parts of the device and its accessories are not allowed to be changed or replaced,other than authorized by the manufacturer or agent.

SSA5000A Service ManualIIISafety Terms and Symbols
When the following symbols or terms appear on the front or rear panel of the instrument or in thismanual, they indicate special care in terms of safety.

This symbol is used where caution is required. Refer to the accompanying
information or documents to protect against personal injury or damage to the
instrument.
This symbol warns of a potential risk of shock hazard.

This symbol is used to denote the measurement ground connection.

This symbol is used to denote a safety ground connection.
This symbol shows that the switch is an On/Standby switch. When it is pressed,
the analyzer’s state switches between Operation and Standby. This switch does
not disconnect the device's power supply. To completely power off the analyzer,
the power cord must be unplugged from the AC socket after the instrument is in
the standby state.
This symbol is used to represent alternating current, or "AC".

IV

CAUTION

The "CAUTION" symbol indicates a potential hazard. It calls attention to aprocedure, practice, or condition which may be dangerous if not followed. Do
not proceed until its conditions are fully understood and met.

WARNING

The "WARNING" symbol indicates a potential hazard. It calls attention to aprocedure, practice, or condition which, if not followed, could cause bodily injury
or death. If a WARNING is indicated, do not proceed until the safety conditions
are fully understood and met.

SSA5000A Service Manual

Working Environment
The design of the instrument has been verified to conform to EN 61010-1 safety standard per thefollowing limits:
Environment
The instrument is used indoors and should be operated in a clean and dry environment with anambient temperature range.
Note: Direct sunlight, electric heaters, and other heat sources should be considered whenevaluating the ambient temperature.

Warning: Do not operate the instrument in explosive, dusty, or humid
environments.

Ambient Temperature
Operating: 0 ℃ to +50 ℃
Non-operation: -30 ℃ to +70 ℃
Note: Direct sunlight, radiators, and other heat sources should be taken into account whenassessing the ambient temperature.

Humidity
Operating: 5% ~ 90 %RH, 30 ℃, derate to 50 %RH at 40 ℃
Non-operating: 5% ~ 95% RH

Mains supply voltage fluctuations
Refer to 2.5 Power and Ground Requirements

AltitudeOperating: ≤ 3,000 m, 25 ℃
Non-operating: ≤ 12,000 m

SSA5000A Service ManualVInstallation (overvoltage) Category
This product is powered by mains conforming to installation (overvoltage) Category II.
Note: Installation (overvoltage) category I refers to situations where equipment measurement
terminals are connected to the source circuit. In these terminals, precautions are done to limit thetransient voltage to a correspondingly low level.
Installation (overvoltage) category II refers to the local power distribution level which applies toequipment connected to the AC line (AC power).

Degree of Pollution
The analyzers may be operated in environments of Pollution Degree II.
Note: Degree of Pollution II refers to a working environment that is dry and non-conductive
pollution occurs. Occasional temporary conductivity caused by condensation is expected.

IP Rating
IP20 (as defined in IEC 60529).

Cooling Requirements
This instrument relies on the forced air cooling with internal fans and ventilation openings. Caremust be taken to avoid restricting the airflow around the apertures (fan holes) at each side of theanalyzer. To ensure adequate ventilation it is required to leave a 15 cm (6 inch) minimum gap
around the sides of the instrument.

CAUTION: Do not block the ventilation holes located on both sides of theanalyzer.
CAUTION: Do not allow any foreign matter to enter the analyzer through theventilation holes, etc.

VI

SSA5000A Service ManualPower and Grounding Requirements
The instrument operates with a single-phase, 100 to 240 Vrms (+/-10%) AC power at 50/60 Hz(+/-5%), or single-phase 100 to 120 Vrms (+/-10%) AC power at 400 Hz (+/-5%).
No manual voltage selection is required because the instrument automatically adapts to line
voltage.
Depending on the type and number of options and accessories (probes, PC port plug-in, etc.), theinstrument can consume up to 193 W of power.
Note: The instrument automatically adapts to the AC line input within the following ranges:
Voltage Range:

90 - 264 Vrms

90 - 132 Vrms

Frequency Range:

47 - 63 Hz

380 - 420 Hz

The instrument includes a grounded cord set containing a molded three-terminal polarized plugand a standard IEC320 (Type C13) connector for making line voltage and safety ground connection.
The AC inlet ground terminal is connected directly to the frame of the instrument. For adequate
protection against electrical shock hazards, the power cord plug must be inserted into a mating AC
outlet containing a safety ground contact. Use only the power cord specified for this instrument andcertified for the country of use.

Warning: Electrical Shock Hazard!
Any interruption of the protective conductor inside or outside of the analyzer,
or disconnection of the safety ground terminal creates a hazardous situation.
Intentional interruption is prohibited.

The position of the instrument should allow easy access to the socket. To make the instrumentcompletely power off, unplug the instrument power cord from the AC socket.

The power cord should be unplugged from the AC outlet if the analyzer is not to be used for an
extended period.

CAUTION: The outer shells of the front panel terminals are connected to the
instrument’s chassis and therefore to the safety ground.

SSA5000A Service ManualVIICleaning
Clean only the exterior of the instrument, using a damp, soft cloth. Do not use chemicals or abrasive
elements. Under no circumstances allow moisture to penetrate the instrument. To avoid electricalshock, unplug the power cord from the AC outlet before cleaning.

Warning: Electrical Shock Hazard!
No operator serviceable parts inside. Do not remove covers.
Refer servicing to qualified personnel

Abnormal Conditions
Do not operate the analyzer if there is any visible sign of damage or has been subjected tosevere transport stresses.
If you suspect the analyzer’s protection has been impaired, disconnect the power cord andsecure the instrument against any unintended operation.
Proper use of the instrument depends on careful reading of all instructions and labels.

Warning: Any use of the analyzer in a manner not specified by the
manufacturer may impair the instrument’s safety protection. This instrument
should not be directly connected to human subjects or used for patientmonitoring.

Safety ComplianceThis section lists the safety standards with which the product complies.
U.S. nationally recognized testing laboratory listing1.

UL 61010-1:2012/R:2019-07. Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use – Part 1: General Requirements.

2.

UL 61010-2-030:2018. Safety Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use – Part2-030: Particular requirements for testing and measuring
circuits.

VIII

SSA5000A Service ManualCanadian certification
1.

CAN/CSA-C22.2 No. 61010-1:2012/A1:2019-07. Safety Requirements for Electrical
Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

2.

CAN/CSA-C22.2 No. 61010-2-030:2018. Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use – Part 2-030: Particular requirements for testing
and measuring circuits.

SSA5000A Service Manual

IX

Contents
Copyright and Declaration ................................................................................................................. I
Important Safety Information ............................................................................................................ II
General Features.............................................................................................................................. 1
Prepare Information .......................................................................................................................... 2
Functional check............................................................................................................................... 3
Power-on Inspection ................................................................................................................. 3
Interface Test .................................................................................................................................... 5
USB Host Test ........................................................................................................................... 5
USB Device Test ....................................................................................................................... 6
LAN Port Test ............................................................................................................................ 7
Performance Verification Test..........................................................................................................11
Absolute Amplitude accuracy Test .......................................................................................... 12
Frequency Response Test ...................................................................................................... 14
Display Average Noise Level (DANL) Test.............................................................................. 17
Phase Noise Test .................................................................................................................... 19
TOI Test ................................................................................................................................... 21
Frequency Accuracy Test ........................................................................................................ 23
1dB Gain Compression Test ................................................................................................... 24
Second Harmonic Distortion Test ............................................................................................ 26
Input Attenuation Error Test..................................................................................................... 28
Assembly Procedures ................................................................................................................... 31
Security Consideration ............................................................................................................ 31
List of Modules ........................................................................................................................ 32
Required Tools ........................................................................................................................ 32
Diagram of Spectrum Analyzer ............................................................................................... 33
Introduction of RF Cable and Interface ................................................................................... 34
Disassembly Procedures ........................................................................................................ 34

X

SSA5000A Service ManualRemoving the Back-Shell................................................................................................. 35
Removing the Rear Metal Cover ..................................................................................... 36
Removing the Local Oscillator Board, Frequency Multiplier Board, Channel Board,Intermediate Frequency Board ........................................................................................ 37
Removing the Main Board ............................................................................................... 39
Removing the Front Metal Cover ..................................................................................... 40
Removing the Key Board and LCDI Board ...................................................................... 41
Removing the USB Board ................................................................................................ 42
Removing the Power Supply Board and IOB Board ........................................................ 43

SSA5000A Service Manual

XI

General Features
Siglent’s SSA5000A family of spectrum analyzers offer a frequency range of 9 kHz to 26.5GHz.
With their light weight, small size, and friendly user interface, the SSA5000A presents a brighteasy to read display, powerful and reliable automatic measurements, and plenty of impressive
features. Applications are many, but include research and development, education, production,
maintenance, and many more.

Table 1 General features

Model

SPAN

Phase noise

DANL

SSA5083A

9 kHz~13.6 GHz<-105 dBc/Hz@1 GHz, 10 kHz offset-165 dBm/Hz

SSA5085A

9 kHz~26.5 GHz<-105 dBc/Hz@1 GHz, 10 kHz offset-165 dBm/Hz⚫

All-Digital IF Technology⚫

Frequency Range from 9 kHz up to 26.5 GHz⚫

-165 dBm/Hz Displayed Average Noise Level (Typ.)⚫

-105 dBc/Hz @10 kHz Offset Phase Noise (1 GHz, Typ.)⚫

1 Hz Minimum Resolution Bandwidth (RBW)⚫

40MHz Maximum Bandwidth⚫

Real-Time Spectrum Analysis⚫

12.1 Inch WVGA（1280 x 800 pixels）Display

SSA5000A Service Manual1Prepare Information
Before initiating performance verification or any adjustments, it is recommended to follow theseprocedures. The following topics are discussed in this chapter.

⚫

How to perform functional checks⚫

How to operate four standard interface tests⚫

How to use the self-calibration routine⚫

How to recall factory Default settings

For more detailed information about analyzers operation, please refer to the SSA5000A User
Manual.

2

SSA5000A Service ManualFunctional check
Power-on Inspection
The normal operating voltage for SSA5000X series spectrum analyzers is in the range of 100240V, 50/60Hz or 100-120V 400Hz.

Please use the power cord provided as accessories to connect the instrument to the powersource as shown in the figure below.

The socket

Figure 1 Connect power cord

Note: To avoid electric shock, make sure that the instrument is correctly
grounded to the earth before connecting AC power.

SSA5000A Service Manual3Press the power-on button located at the lower left corner of the front panel and some keys will
illuminate for about 6 seconds. Then, the boot screen will appear on the display.

Figure 2 Front Panel

4

SSA5000A Service ManualInterface Test
There are several types of interfaces: USB Host, USB Device, LAN and Earphone. Being
connected to other instruments via these interfaces enables the analyzer to achieve even moreenhanced capabilities. In order to ensure the analyzer is operating properly, it is recommended to
first test the interfaces.

USB Host Test
To test if the USB Host interface is working normally.

Tools:⚫

USB memory device (U disk)

Steps:
1.

Insert a U disk into the USB Host interface on the front panel of the spectrum analyzer.

2.

An icon shaped like a U disk appears on the upper right of the screen, as shown in figure
below. The icon appearance indicates the U disk has been successfully recognized.

USB drive has been properly recognized

SSA5000A Service Manual5USB Device Test
To test if the USB Device interface works normally.

Tools:⚫

A computer with USB interface that is compatible with running National Instruments NI-MAX
software⚫

A standard USB cable (Type A-B)⚫

NI-MAX software

Steps:
1.

Download and install National Instruments NI MAX software by following the installation
instructions provided by National Instruments.

2.

Connect the analyzer USB Device port and the computer using an USB cable.

3.

Run NI MAX software. Click “Device and interface” at the upper left corner of the NI softwareinterface and immediately displays the “USBTMC” device symbol.

4.

Click “Open VISA Test Panel” option button, and then the following.
Then click the “Input/Output” option button and click the “Query” option button in order toview the Read operation information.

6

SSA5000A Service ManualLAN Port Test
Use to test the LAN interface functionality.

Tools:⚫

A computer with functional LAN interface⚫

A standard LAN cable

Steps:
1.

Connect the spectrum analyzer and the computer using a LAN cable via LAN interface.

2.

Press

System->I/O Config, Set IP Config to DHCP, as the figure below shows. The

analyzer will set IP Address and Subnet Mask and Gate way automatically in this network.
Write down the displayed IP address. It will be used in later steps.

Figure 3 IP configuration interface

3.

Run NI max software. Click “Device and interfaces” at the upper left corner of the NI softwareinterface, select “Network Devices”, Add Network Device, and select VISA TCP/IP Resource
as shown:

SSA5000A Service Manual7Figure 44.

Select Manual Entry of LAN instrument, select Next , and enter the IP address as shown.
Click Finish to establish the connection:
NOTE: Leave the LAN Device Name BLANK or the connection will fail.

Figure 58

SSA5000A Service ManualFigure 6

5.

After a brief scan, the connection should be shown under Network Devices:

Figure 7

6.

Right-click on the product and select Open NI-VISA Test Panel:

SSA5000A Service Manual9Figure 8

7.

Click “Input/Output” option button and click “Query” option button. If everything is correct, youwill see the Read operation information returned as shown below.
NOTE: The *IDN? command (known as the Identification Query) should return the instrument
manufacturer, instrument model, serial number, and other identification information.

Figure 910

SSA5000A Service ManualPerformance Verification Test
This chapter explains testing the analyzer in order to verify performance specifications. For
accurate test results, the test equipments and the analyzer must have been stored between 0
and 50°C for at least 2 hours prior to use, and powered on and warmed up for at least 40 minutes
before testing.
Here are the required equipments:

Table 2 Test equipments

Equipment

Specification

Qty.

Recommended
Siglent SDG6032X(0-350MHz)

Signal Generator

9 kHz~26.5GHz

1 or 2andAgilent E8257D-540(250k-40GHz)
R&S NRP6A(9 kHz~6 GHz)

Power Meter

9 kHz~26.5 GHz

1 or 2andR&S NRP33S(10 MHz~33 GHz)

Frequency
Counter

10 MHz1

Cut-off 3200 MHz

1

Cut-off 7300 MHz

1

Cut-off 9400 MHz

1

Cut-off 12100 MHz

1

Power divider

9 kHz~26.5 GHz

1

SMA-SMA Cable

26.5 GHz

3

N-N Cable

6 GHz

3

BNC Cable

1 GHz

2

Low-pass Filter

SSA5000A Service Manual

Agilent 53220A

11

Absolute Amplitude accuracy Test
Specification
20 °C to 30 °C, fc=50 MHz, RBW=VBW=1 kHz, peak detector, attenuation = 20 dB
Absolute amplitude accuracy

Preamp off±0.4 dB, input signal -10 dBm

Preamp on±0.5 dB, input signal -40 dBm

Power Meter

USB

PC

USB

REF OUTREF IN

RF Generator

SSA5000X

RF OUTTG OUT

RF IN

N-SMA
N-SMA

N-SMA
Power Divider

Figure 10 Diagram of Absolute Amplitude Accuracy Test System

Steps:
1.

Connect the spectrum analyzer, signal generator and power meter as in Figure 102.

Set the signal generator to output a sine waveform with 50 MHz frequency and -10 dBm
amplitude and enable the output

3.

4.

12

Configure the spectrum analyzer:a)

Set the center frequency to 50 MHzb)

Set the span to 1 MHzc)

Set the attenuation to 20 dBd)

Set the RBW and VBW to 1 kHz

e)

Press

Trace

-> set Avg Times to 10, wait for trace average

Record measurement value P1 of the power meter

SSA5000A Service Manual

5.

Press

Peak

to find the maximum value of the spectrum analyzer and record the result P2

6.

Absolute amplitude accuracy = P1 – P2

7.

Change the preamplifier on and set the output amplitude of the signal generator to -40dBm.
Repeat steps 3 to 6 and record the results.

Record:Preamp off
Frequency

P1 (Power Meter)

P2 (Spectrum Analyzer)

P1- P2P1 (Power Meter)

P2 (Spectrum Analyzer)

P1- P250 MHzPreamp on
Frequency
50 MHz

SSA5000A Service Manual13Frequency Response Test
Specification
20 °C to 30 °C , attenuation = 20 dB, reference frequency 50 MHz

Preamp off

10 MHz~7.5 GHz±1.5 dB, typ.

7.5 GHz~13.6GHz±2.0 dB, typ.

13.6 GHz~26.5 GHz±2.5 dB, typ.

Power Meter

USB

PC

USB

REF OUTREF IN

RF Generator

SSA5000X

RF OUTTG OUT

RF IN

N-SMA
N-SMA

N-SMA
Power Divider

Figure 11 Diagram of Frequency Response Test System

Steps:
1.

Connect the spectrum analyzer, signal generator and power meter as Figure 11 shows2.

Set the signal generator to output a sine waveform with 50 MHz frequency and -20 dBm
amplitude and enable output.

3.

Read the measurement of the power meter record the result as reference value P1

4.

Configure the spectrum analyzer:

14a)

Set the center frequency to 50 MHzb)

Set the span to 1 MHzc)

Set the attenuation to 20 dB

d)

Press

Peak

to find the maximum value and record as reference value P2

SSA5000A Service Manual

5.

Modify the output frequency of the signal generator to 100 kHz, 1 MHz, 10 MHz, 100 MHz, 1
GHz, 2 GHz, 3 GHz, 4 GHz, 5 GHz, 6 GHz, 7 GHz, 8 GHz, 9GHz, 10 GHz, 11 GHz, 12 GHz,
13 GHz, 14 GHz, 15 GHz, 16 GHz, 17 GHz, 19 GHz, 20 GHz, 21 GHz, 22 GHz, 23 GHz, 24
GHz, 25 GHz, 26 GHz.

6.

Read the measurement of the power meter record the result as A1, SYSTEM ERROR = A1 –P1

7.

Modify the center frequency of the spectrum analyzer so that it matches the signal generator
and find the peak value A2, calculate the GLOBAL ERROR = A2 – P2

8.

Frequency response = |GLOBAL ERROR - SYSTEM ERROR|, compare the calculated resultwith the specification

9.

Enable the preamplifier and set the output amplitude of the signal generator to -40dBm.
Repeat steps 3 to 8 and record the results.

Record:Preamp off
Frequency

P1 (PM)

P2 (SA)

A1(PM)

A2(SA)

50 MHzFrequency

A1 – P1

A2 – P2(SystemError)(GlobalError)

Frequency
Response

Pass/Fail100 kHz
1 MHz
10 MHz
100MHz
1 GHz
2 GHz
3 GHz
4 GHz
5 GHz
6 GHz
7 GHz
8 GHz
9 GHz

SSA5000A Service Manual15

10 GHz11 GHz12 GHz13 GHz14 GHz15 GHz16 GHz17 GHz18 GHz19 GHz20 GHz21 GHz22 GHz23 GHz24 GHz25 GHz26 GHz16

SSA5000A Service ManualDisplay Average Noise Level (DANL) Test
Specification
20 °C to 30 °C, attenuation = 0 dB, sample detector, trace average >50

Preamp Off

Preamp On

Frequency

RBW=10 Hz

100 kHz~1 MHz-130 dBm,-140dBm (typ.)1 MHz ~10 MHz-143dBm, -151dBm (typ.)10 MHz~1.22 GHz-144dBm, -149dBm (typ.)1.22 GHz~3.15GHz-143dBm, -147dBm (typ.)3.15 GHz~7.22GHz-140dBm, -143dBm (typ.)7.22 GHz~13.6 GHz-138dBm, -142dBm (typ.)13.6 GHz~18.9 GHz-134dBm, -142dBm (typ.)18.9 GHz~24.2 GHz-132dBm, -139dBm (typ.)24.2 GHz~26.5 GHz-124dBm, -135dBm (typ.)100 kHz~1 MHz-135dBm, -140dBm (typ.)1 MHz ~10 MHz-153dBm, -165dBm (typ.)10 MHz~1.22 GHz-160dBm, -165dBm (typ.)1.22 GHz~3.15GHz-158dBm, -162dBm (typ.)3.15 GHz~7.22GHz-155dBm, -160dBm (typ.)7.22 GHz~13.6 GHz-155dBm, -159dBm (typ.)13.6 GHz~18.9 GHz-152dBm, -156dBm (typ.)18.9 GHz~24.2 GHz-150dBm, -155dBm (typ.)24.2 GHz~26.5 GHz-142dBm, -152dBm (typ.)

SSA5000XTG OUT

RF IN

50 OhmLoad
Figure 12 Diagram of DANL Test System

SSA5000A Service Manual17

Step:
1.

Connect a 50Ω load to the RF IN port of spectrum analyzer as the figure shows2.

Configure the spectrum analyzer:a)

Set the start frequency to 9 kHz and the stop frequency to 100kHzb)

Set the RBW to 10Hz and VBW to 1Hzc)

Set the detect type to Sample

3.

Press

Trace

-> Avg Times and wait for trace average

4.

Press

Peak

to find the maximum noise level of this frequency range, record the marker

value N
5.

Change the frequency range according to the specification table and set the RBW to suitablevalue, repeat step 2 to 5 and test other frequency range.

Record:FrequencyN

100 kHz~1 MHz
1 MHz ~10 MHz
10 MHz~1.22 GHz
1.22 GHz~3.15GHz
Preamp Off

3.15 GHz~7.22GHz
7.22 GHz~13.6 GHz
13.6 GHz~18.9 GHz
18.9 GHz~24.2 GHz
24.2 GHz~26.5 GHz
100 kHz~1 MHz
1 MHz ~10 MHz
10 MHz~1.22 GHz
1.22 GHz~3.15GHz

Preamp Off

3.15 GHz~7.22GHz
7.22 GHz~13.6 GHz
13.6 GHz~18.9 GHz
18.9 GHz~24.2 GHz
24.2 GHz~26.5 GHz

18

SSA5000A Service ManualPhase Noise Test
Specification
20 °C to 30 °C , attenuation = 0 dB, fc = 1 GHz<-103 dBc/Hz @10 kHz offset, <-106 dBc/Hz (typ.)Phase noise<-103 dBc/Hz @100 kHz offset,<-106 dBc/Hz (typ.)<-116 dBc/Hz @1 MHz offset, <-119 dBc/Hz (typ.)

BNC-BNC

REF OUTREF IN

RF Generator

SSA5000X

RF OUTTG OUT

RF IN

N-SMA

Figure 13 Diagram of Phase Noise Test System

Step:
1.

Connect the signal generator and spectrum analyzer as Figure 13 shows2.

Configure the spectrum analyzer:

3.

a)

Set the center frequency to 1 GHzb)

Set the span to 3 MHzc)

Set the RBW to 100 KHzd)

Set the attenuation = 0 dBe)

Set the detect type to Sample

Set the signal generator to output a sine waveform with 1000 MHz frequency and -20 dBm
amplitude and enable the output

4.

Press

Trace

-> avg Times 100 and wait for trace average.

5.

Press

peak

to find the maximum value, record the peak value P1

6.

Change marker type to delta and input 100 kHz, press

Marker Fn-> Noise Marker, record

the marker value P2

SSA5000A Service Manual

19

7.

Phase noise of 1 GHz @ 1 MHz offset = P2 - P1

8.

Repeat the above steps but change the span to 300, 30 KHz and the RBW to 10, 1 KHz,
obtaining the phase noise about 1 GHz @ 100, 10 KHz offset

Record:Offset @1 GHz

P1P2

P2 - P1

Pass/Fail

10 kHz
100 kHz
1 MHz

20

SSA5000A Service Manual

TOI Test
Specificationfc≥50 MHz, two -20 dBm tones at input mixer spaced by 100 kHz, attenuation = 0 dB,
preamp off, 20 °C to 30 °C
IIP3

50 MHz~7.22 GHz

11 dBm, 15 dBm (typ.)7.22 GHz~26.5 GHz

10 dBm, 14 dBm (typ.)

BNC-BNC
REF INREF OUT

BNC-BNC
REF INREF OUT

RF Generator A

RF Generator B

RF OUT

RF OUT

REF INREF OUTSSA5000XTG OUT

RF IN

N-SMA

N-SMA
N-SMA
Power Divider

Figure 14 Diagram of TOI Test System

Step:
1.

Connect double signal generators to a power divider. The output of the divider connect RF IN
port of spectrum analyzer.

2.

3.

Configure the spectrum analyzer:a)

Set the center frequency to 50 MHzb)

Set the span to 1 MHzc)

Set the RBW to 10 kHzd)

Set the attenuation = 0 dB

Set the signal generator A to output a sine waveform with 50 MHz frequency and -20 dBm
amplitude and enable output

4.

Set the signal generator B to output a sine waveform with 50.1 MHz frequency and -20 dBm
amplitude and enable output

5.

Press

Trace

-> avg Times 100, and wait for trace average

SSA5000A Service Manual

21

6.

Press

Peak

Next Peakto find the maximum value, then change the marker type to delta and press
twice, record delta amplitude value DELTA.

7.

IIP3 = -20dBm – DELTA/2, check if the calculate result ≥ +11 dBm.

8.

Change the center frequency to 8 GHz and the frequency of sine waveform A and B to 50
MHz and 50.1 MHz, then repeat step 5 to step 7 but check if the calculate result ≥ +10 dBm.

Record:Offset

DELTA

IIP3

Pass/Fail

50 MHz50.1 MHz
8000 MHz
8000.1 MHz

22

SSA5000A Service ManualFrequency Accuracy Test
Specification
20 °C to 30 °C, fc=10MHz
Reference frequency

10.000000 MHz

Initial calibration accuracy<1 ppm

BNC-BNC
CHANNEL A

AWG Generator
REF INCHANNEL B

REF INREF OUTSSA5000XTG OUT

RF IN

OCXO

Figure 15 Diagram of Frequency Accuracy Test System

Steps:
1.

Connect ref out port of the spectrum analyzer to the channel A of the SDG2042X, whichreferenced by an OCXO

2.

Set the SDG2042X to frequency counter mode, and set frequency ref to 10.000000 MHz

3.

Check if the frequency deviation ≤ 1 ppm

Record:Frequency

Frequency Deviation

Pass/Fail10.000000 MHz

SSA5000A Service Manual23

1dB Gain Compression Test
Specification
20 °C to 30 °C, fc=50MHz, attenuation = 0 dB, preamp off
1dB Gain Compression>-5dBmREF OUT

SIGNAL Generator
RF OUT

BNC-BNC

BNC-SMA
N-SMA

Power Meter

Power Divider
REF IN

RF Generator
N-SMA

RF OUT(a)

REF OUTREF IN

SIGNAL Generator

SSA5000X

RF OUT

BNC-BNCTG OUT

RF IN

BNC-SMA
N-SMA
Power Divider

REF IN

RF Generator
N-SMA

RF OUT(b)
Figure 16 Diagram of 1dB Gain Compression Test System

Steps:
1.

Connect the signal generator, RF generator and power meter as Figure 16(a) shows2.

Set the output frequency of signal generator 50 MHz and the amplitude to -25 dBm. Set theoutput frequency of RF generator to 53 MHz and the amplitude to -5 dBm.

24

SSA5000A Service Manual

3.

Enable the output of signal generator and disable the output of RF generator. Observe themeasurement value of the power meter. Adjust the output amplitude of signal generator until
the reading of the power meter becomes -25 dBm.

4.

Enable the output of RF generator and disable the output of signal generator. Observe themeasurement value of the power meter. Adjust the output amplitude of RF generator until thereading of the power meter becomes -5 dBm.

5.

Disconnect the power divider and power meter and connect the power divider with spectrum
analyzer, as shown in Figure 16(b).

6.

Enable the output of signal generator and disable the output of RF generator.

7.

Configure the spectrum analyzer:a)

Set the center frequency to 50 MHz.

b)

Set the span to 100 kHz.

c)

Set the reference level to -25 dBm.

d)Set the input attenuation to 0 dB.

e)

Set the resolution bandwidth to 1 kHz.

f)

Set the sweep time to auto and the auto sweep time to accuracy.

8.

Press

Peak

to find the maximum value and record as reference value P1.

9.

Enable the output of signal generator and the output of RF generator, find the peak value P2.

Record:P1

SSA5000A Service Manual

P2

P1 – P2

25

Second Harmonic Distortion Test
Specification
20 °C to 30 °C, fc=50MHz, attenuation = 0 dB, preamp off, mixer level=-30dBm
10 MHz~7.22 GHz<-62dBc

7.22 GHz~26.5 GHz<-74dBc

REF OUT

RF Generator

Power Meter

RF OUT

N-SMA

N-SMA

Low Pass Filter(a)

BNC-BNC
REF INREF OUTSSA5000X

RF Generator

TG OUT

RF OUT

N-SMA

Low Pass Filter

RF IN

N-SMA

(b)
Figure 17 Diagram of Second Harmonic Distortion Test System

Steps:
1.

Connect the RF generator, 3200 MHz low pass filter and power meter as figure 3-8(a) shows2.

Set the output frequency of the RF generator to 3200 MHz and the amplitude to -20 dBm.
Observe the measurement value of the power meter. Adjust the output amplitude of RF
generator until the reading of the power meter becomes -20 dBm.

3.

Connect the RF generator, 32000MHz low pass filter and spectrum analyzer as figure 3-8(b)shows. Enable the output of RF generator.

4.

Configure the spectrum analyzer:a)26

Set the center frequency to 3200 MHz.

SSA5000A Service Manual

5.

b)

Set the span to 10 kHz.

c)

Set the reference level to -20 dBm.

d)Set the input attenuation to 0 dB.

e)

Set the resolution bandwidth to 300 Hz.

f)

Set the video bandwidth to 10 Hz.

g)

Set the sweep time to auto and the auto sweep time to accuracy.

h)Press Trace -> avg Times 100 and wait for trace average.

Press

Peak

to find the maximum value P1. Then, double the center frequency ofspectrum analyzer to 100 MHz, Press
6.

Peak

to find the maximum value P2.

According to the table change the output frequency of RF generator and center frequency ofspectrum analyzer and the low pass filter, then repeat the step 4 to step 5.

Record:Frequency

P1

P2

P1 – P2

3200 MHz
7300 MHz
9400 MHz
12100 MHzSSA5000A Service Manual27Input Attenuation Error Test
Specification
20 °C to 30 °C, fc=50 MHz, preamp off, mixer level=-30dBm
1 MHz~ 7.22 GHz<±0.5dB

7.22 GHz~26.5 GHz<±0.7dBREF OUT

RF Generator

Power Meter

RF OUT

N-SMA(a)

BNC-BNC
REF INREF OUTSSA5000X

RF Generator

TG OUTRF IN

RF OUT
N-SMA(b)Figure 18 Diagram of the Input Attenuation Error Test System

Steps:
1.

Connect the RF generator and power meter as shown in figure 3-9(a).

2.

Set the output frequency of the RF generator to 50 MHz and the amplitude to -30 dBm.
Observe the measurement value of the power meter. Adjust the output amplitude of RF
generator until the reading of the power meter becomes -30 dBm. Read the output amplitude
from RF generator, record it as P-30.

3.

Adjust the output amplitude of RF generator until the reading of the power meter becomes 25, -20, -15, -10, -5, 0, 5, 10, 15, 20 dBm respectively. Record these values as P-25, P-20, P-15,
P-10, P-5, P0, P5, P10, P15, P20.

4.

28

Connect the RF generator and spectrum analyzer as figure 3-2(b) shows.

SSA5000A Service Manual5.

Set the output frequency of the RF generator to 50 MHz and the amplitude to P-10.

6.

Configure the spectrum analyzer:a)

Set the center frequency to 50 MHz.

b)

Set the span to 10 kHz.

c)

Set the reference level to 0 dBm.

d)Set the input attenuation to 20 dB.

e)

Set the resolution bandwidth to 1 kHz and the video bandwidth to 10 Hz.

f)

Set the sweep time to auto and the auto sweep time to accuracy.

7.

Press

Peak

to find the maximum value. Record it as reference value P (ATT=20dB).

8.

Change the output amplitude of the RF generator to P-30。Set the input attenuation of thespectrum analyzer to 0dB. Press

Peak

to find the maximum value. Record it as reference

value P (ATT=0dB).
9.

Repeat the step 8, record the value
P (ATT=5 dB),
P (ATT=10 dB),
P (ATT=15 dB),
P (ATT=25 dB),
P (ATT=30 dB),
P (ATT=35 dB),
P (ATT=40 dB),
P (ATT=45 dB),
P (ATT=50 dB).

Error (ATT=0dB) = P(ATT=0dB) - (-30) - P(ATT=20dB) - (-10),
Error (ATT=5dB) = P(ATT=5dB) - (-25) - P(ATT=20dB) - (-10),
Error (ATT=10dB) = P(ATT=10dB) - (-20) - P(ATT=20dB) - (-10),
Error (ATT=15dB) = P(ATT=15dB) - (-15) - P(ATT=20dB) - (-10),
Error (ATT=25dB) = P(ATT=25dB) - (-5) - P(ATT=20dB) - (-10),
Error (ATT=30dB) = P(ATT=30dB) - (0) - P(ATT=20dB) - (-10),
SSA5000A Service Manual29Error (ATT=35dB) = P(ATT=35dB) - (5) - P(ATT=20dB) - (-10),
Error (ATT=40dB) = P(ATT=40dB) - (10) - P(ATT=20dB) - (-10),
Error (ATT=45dB) = P(ATT=45dB) - (15) - P(ATT=20dB) - (-10).
Error (ATT=50dB) = P(ATT=50dB) - (20) - P(ATT=20dB) - (-10).

Record:
50MHz

ATT

P0

0

P-5

5

P-10

10

P-15

15

P-20

20

P-25

25

P-30

30

P-35

35

P-40

40

P-45

45

P-50

50

8000MHz30

P0~-30P0~-30

ATT

P0

0

P-5

5

P-10

10

P-15

15

P-20

20

P-25

25

P-30

30

P-35

35

P-40

40

P-45

45

P-50

50

P(ATT=0~30dB)

Error

——

P(ATT=0~30dB)

Error

——

SSA5000A Service ManualAssembly ProceduresThis chapter describes how to remove the major modules from the SSA5000X spectrum analyzer.
To install the removed modules or replace new modules, please follow the corresponding
operating steps in reverse order.

This chapter includes the following topics:⚫

Security Consideration which describes security information needed to consider while
operating.

⚫

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

⚫

Required Tools 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 you begin to remove or replace the modules. Otherwise, possible
personal injuries or damages to the components may occur.

Avoid Electrical Shock Hazardous voltages exist on the LCD module and power supply module.
To avoid electrical shock, first disconnect the power cord from the analyzers and then wait at least
three minutes for the capacitors in the analyzers to discharge before you begin disassembly.

Preventing ESD Electrostatic discharge (ESD) can damage electronic components. When doing
any of the procedures in this chapter, use proper ESD precautions. As a minimum, place theanalyzers on a properly grounded ESD mat and wear a properly grounded ESD strap.

SSA5000A Service Manual31

List of Modules
The following removable modules are listed in the order of performing disassembly procedures.
Table 3 List of modules

Number of Module

Module1

Back-Shell

2

Rear Metal Cover

3

Local Oscillator board

4

Frequency Multiplier Board

5

Channel Board

6

Intermediate Board

8

Main Board

9

Front Metal Cover

10

Key Board

11

LCDI Board

12

IOB Board13

USB Board

14Power Board

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

Multifunctional screwdriver⚫

Antistatic gloves⚫

Custom screw hexagonal nut tool or long nose pliers

32

SSA5000A Service ManualDiagram of Spectrum Analyzer

A2 MUL SMA J7

SMA J8W5MCX J11RIBBON CABLE

FFC A6

KEY

HIGH
SPEED

A7 LCDIFFC

FFC A8IOB

FFC

FFC A9

USB

FFC

A3 LO
MCX J15

RIBBON CABLESMA J6SMA J9RIBBON CABLE

RIBBON CABLE
FFC MCX J10

HIGH
SPEED

W2
MCX J12SMA J2MCX J14FFC

SMA J3W3A5 MA
MCX J16

A4 IF
CoaxialSwitchSMA J1A1 CH

MCX J4SMB J5
RIBBON CABLEW1MCX J13W4SMB
POWER CABLE

POWER
CABLE A10POWER

RIBBON CABLE

SSA5000A Service

Manual33

Introduction of RF Cable and Interface

J16
W3

J14

J12

J10

J15

J11

W5

J9

J13
W2

W1

J4

J8

J7
J6
J2

W4

J1

J3

J5

Figure 19 Code of the RF Cable and Interface.

The connection relationship shown in the following table:
W1

J4 to J13

MCX to MCX

W2

J10 to J12

MCX to MCX

W3

J14 to J16

MCX to MCX

W4

J17 to J15

SMB to SMB

W5

J15 to J11

MCX to MCX

Disassembly ProceduresThis section describes how to remove and install the modules listed above in the spectrum analyzer indetail. Complete disassembly will be best achieved through the following operating steps.

34

SSA5000A Service ManualRemoving the Back-Shell

Metal
Handle

PWM3*10

PM4*6

Figure 20 Picture of the Back-Shell.

Removal steps:
1.

Remove each screws of Back-Shell as shown in figures above.

2.

Remove the Metal Handle.

3.

Remove the Back-Shell slowly.

To install the rear metal cover, please perform these steps in reverse order.

SSA5000A Service Manual35Removing the Rear Metal Cover

PWM3*6

3 2
5

4

1

6

6

4
5

2

3

1

Figure 21 Diagram for removing rear metal cover.

Removal steps:
1.

Place the analyzer down on a soft surface such as an anti-static mat.

2.

Remove the twelve screws located on the rear metal cover.

3.

Lift the rear metal cover up carefully.

4.

Disconnecting the cable marked number one to number six.

5.

The edge of the rear metal cover is sharp, please lift the rear metal cover up and off carefully to
avoid personal injury.

To install the rear metal cover, please perform these steps in reverse order.

36

SSA5000A Service ManualRemoving the Local Oscillator Board, Frequency Multiplier Board, Channel Board,Intermediate Frequency Board

A3 LO

A2 MUL

Removal steps:
1.

Disconnecting all the connection of the cables is suggested, before you start remove the local
oscillator board and frequency multiplier board.

2.

Remove the coaxial switch on channel board.

3.

Remove the screws on local oscillator board and frequency multiplier board marked red and yellow
circle.

4.

Remove the screws located on the side of front metal cover.

5.

Remove the supporting cover.

SSA5000A Service Manual37

A4 IF

A1 CH

Figure 22 Diagram for removing A1, A2, A3, A4.

6.

Remove all the screws on channel board and intermediate frequency board marked red and yellow
circle.

7.

Remove the channel board and intermediate frequency board.
To install the channel board and intermediate frequency board, please perform these steps inreverse order.

38

SSA5000A Service ManualRemoving the Main Board

Disconnecting the cablecarefully

A5 MA

Figure 23 Diagram for removing A5

Removal steps:
1.

Remove the screws on main board marked yellow and green circle.

2.

Disconnecting the connection of key board and touch panel to main board marked brown circle.

3.

Remove sub board from the main board.

4.

Remove the main board.
To install the main board, please perform these steps in reverse order.

5.

Remove the seven screws located on the keyboard.

6.

Disconnect the cable that connected the keyboard and the channel board.

7.

Separate the modules carefully.

To install the main board, please perform the above steps in converse order.

SSA5000A Service Manual39Removing the Front Metal Cover

Figure 24 Diagram for removing front metal cover.

1.

Remove the screws marked yellow circle.

2.

Remove the front metal cover carefully.

To install the front metal cover, please perform these steps in reverse order.

40

SSA5000A Service ManualRemoving the Key Board and LCDI Board

A6 KEY

A7 LCDI

Figure 25 Diagram for removing A6, A7.

1.

Remove the screws marked yellow circle.

2.

Disconnecting the connection marked blue circle (magnetic ring) and brown circle (screen line
group).

3.

Remove the key board and LCDI board.

To install the key board and LCDI board, please perform the above steps in converse order.

SSA5000A Service Manual41Removing the USB Board

A8 USB

Figure 26 Diagram for removing A8.

1.

Remove the screws marked yellow circle.

2.

Remove the USB Board from the front metal cover (Pull out FFC line carefully).

To install the USB board, please perform the above steps in converse order.

42

SSA5000A Service ManualRemoving the Power Supply Board and IOB Board

A10
POWER

A9 IOB

Figure 27 Diagram for removing A9, A10.

1.

Remove the screws in Power Supply Board marked yellow red circle.

2.

Disconnecting all the cable of the Power Supply Board.

3.

Remove the Power Supply Board.

4.

Remove the screws in IOB Board marked yellow circle.

5.

Remover the IOB Board.

SSA5000A Service Manual43About SIGLENTSIGLENT is an international high-tech company, concentrating on R&D, sales,
production and services of electronic test & measurement instruments.

SIGLENT first began developing digital oscilloscopes independently in 2002.

After more than a decade of continuous development, SIGLENT has extended
its product line to include digital oscilloscopes, isolated handheld
oscilloscopes,

function/arbitrary

waveform

generators,

RF/MWsignalgenerators, spectrum analyzers, vector network analyzers, digital multimeters,
DC power supplies, electronic loads and other general purpose test
instrumentation. Since its first oscilloscope was launched in 2005, SIGLENT
has become the fastest growing manufacturer of digital oscilloscopes. We
firmly believe that today SIGLENT is the best value in electronic test &measurement.

Headquarters:
SIGLENT Technologies Co., Ltd
Add: Bldg No.4 & No.5, Antongda Industrial
Zone, 3rd Liuxian Road, Bao'an District,
Shenzhen, 518101, China
Tel: + 86 755 3688 7876
Fax: + 86 755 3359 1582
Email: sales@siglent.com
Website: int.siglent.com

North America:
SIGLENT Technologies America, Inc
6557 Cochran Rd Solon, Ohio 44139

Tel: 440-398-5800
Toll Free: 877-515-5551
Fax: 440-399-1211
Email: info@siglentna.com
Website: www.siglentna.com

Europe:SIGLENT Technologies Germany GmbH
Add: Staetzlinger Str. 70
86165 Augsburg, Germany

Follow us on
Facebook: SiglentTech

Tel: +49(0)-821-666 0 111 0
Fax: +49(0)-821-666 0 111 22
Email: info-eu@siglent.com

Website: www.siglenteu.com

44

SSA5000A Service Manual