SSG5000A
Signal Generator
Service Manual
SM0805A-E01A

SSG3000A Service Manual 1

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 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 wellas the ISO9001: 2008 standard and the ISO14001: 2004 standard. Other international standard
conformance certification is in progress.

SSG5000A Service Manual1General Safety Summary
Carefully read the following safety precautions to avoid any personal injury or damage to the
instrument and any products connected to it. To avoid potential hazards, please use the instrument
as specified.
Use Proper AC Power Line
Only the power cord designed for the instrument and authorized by local country should be used.
Ground the Instrument
The instrument is grounded through the protective earth conductor of the power line. To avoid electric
shock, please make sure the instrument is grounded correctly before connecting its input or output
terminals.
Connect the Probe Correctly.
If a probe is used, do not connect the ground lead to high voltage since it has isobaric electric
potential as the ground.
Look Over All Terminals’ Ratings
To avoid fire or electric shock, please observe all ratings and label notices on this instrument. Before
connecting the instrument, please read the manual carefully to gain more information about the
ratings.
Use Proper Overvoltage Protection
Make sure that no overvoltage (such as that caused by a thunderstorm) can enter the product, orelse the operator might be exposed to danger of electrical shock.
Electrostatic Prevention
Operate the instrument in an electrostatic discharge protective area environment to avoid damages
induced by static discharge. Always ground both the internal and external conductors of the cable torelease static before connecting.
Maintain Proper Ventilation
Inadequate ventilation may cause increasing of the instrument’s temperature, which will eventually
damage the instrument. So keep well ventilated and inspect the intake and fan regularly.
Avoid Exposed Circuit or Components
Do not touch exposed contacts or components when the power is on.
Do Not Operate Without Covers
Do not operate the instrument with covers or panels removed.
2

SSG5000A Service ManualUse Only the Specified Fuse.
Keep Product Surfaces Clean and Dry.
To avoid the influence of dust and/or moisture in the air, please keep the surface of the device clean
and dry.
Do Not Operate in Wet Conditions.
In order to avoid short circuiting to the interior of the device or electric shock, please do not operate
the instrument in a humid environment.
Do Not Operate in an Explosive Atmosphere.
In order to avoid damage to the device or personal injury, it is important to operate the device awayfrom an explosive atmosphere.

SSG5000A Service Manual3Safety Terms and Symbols
Terms on the product. These terms may appear on the product:
DANGER: Indicates an injury or hazard that may immediately happen.
WARNING: Indicates an injury or hazard that may not immediately happen.
CAUTION: Indicates that a potential damage to the instrument or other property might occur.

Symbols on the product. These symbols may appear on the product:

4

Hazardous

Protective

VoltageGroundWarning

Earth Chassis
Ground

SSG5000A Service ManualContents
Guaranty and Declaration.................................................................................................................. 1
General Safety Summary ................................................................................................................... 2
Safety Terms and Symbols................................................................................................................ 4
Preparation Information..................................................................................................................... 7
Power-on Inspection ..................................................................................................................... 7
Interface Test ................................................................................................................................. 8
USB Host Test ........................................................................................................................ 8
USB Device Test .................................................................................................................... 9
LAN Port Test ....................................................................................................................... 10
Performance Verification Test ......................................................................................................... 14
10 MHz output accuracy test ...................................................................................................... 14
Absolute amplitude accuracy test ............................................................................................... 15
Second Harmonics ...................................................................................................................... 21
Internal AM modulation test ........................................................................................................ 23
Internal FM modulation test ........................................................................................................ 25
Internal ΦM modulation test ........................................................................................................ 27
Pulse modulation test .................................................................................................................. 30
LF AC test.................................................................................................................................... 32
LF DC test ................................................................................................................................... 33
Assembly Procedures...................................................................................................................... 35
Safety Considerations ................................................................................................................. 35
List of Modules ............................................................................................................................ 36
Required Tools ............................................................................................................................ 36
Disassembly Procedures ............................................................................................................ 36
Remove the Outer Cover ..................................................................................................... 37
Remove the Channel plate Module ..................................................................................... 38
Remove the Power Module ................................................................................................. 39

SSG5000A Service Manual5Remove the frequency multiplication plate module ............................................................. 40
Remove the Mechanical attenuator module ........................................................................ 41
Remove the Control Board .................................................................................................. 42
Remove the Main Board ...................................................................................................... 43
Remove the front panel ....................................................................................................... 44
Remove the LCD and Keyboard.......................................................................................... 45
Contact SIGLENT.............................................................................................................................. 46

6

SSG5000A Service ManualPreparation 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 power-on inspection.

⚫

How to perform interface test.

For more detailed information about the signal generator operation, please refer to the SSG5000A
User Manual.

Power-on Inspection
The normal operating voltage for SSG5000A series signal generator is in the range of 100-240
VRMS, 50/60Hz or 100-120 VRMS, 400Hz.
Please use the power cord provided in the accessories to connect the instrument to the powersource as shown in the figure below.

PowerInterface

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.

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

SSG5000A Service Manual

7

The front and rear panels are shown in the figures below.

Figure 2 Front Panel

Figure 3 Rear PanelInterface Test
The SSG5000A series signal generator is designed with three standard interfaces: USB Host, USB
Device and LAN. Being connected to other instruments via these interfaces enables the signal
generator to achieve additional capabilities. To ensure the signal generator is working properly, it isrecommended to test the interfaces first.

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

8

USB memory device (U disk)

SSG5000A Service ManualSteps:
1. Insert a U disk into the USB Host interface on the front panel of the signal generator.
2. An icon shaped like a U disk appears on the upper right corner of the screen, as shown in figure
below. The appearance of the icon indicates the U disk has been successfully recognized.

Figure 4 USB drive has been properly recognized

USB Device Test
To test if the USB Device interface is working 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 signal generator USB Device port and the computer with an USB cable.

3.

Run NI MAX software. Click “Device and interface” at the upper left corner of the NI software

SSG5000A Service Manual9interface and it immediately displays the “USBTMC” device symbol.

4.

Click “Open VISA Test Panel”, and then the VISA Test Panel as shown in the following picture
will appear. Then click the “Input/Output” option button on the VISA Test Panel and click the“Query” option button to view the Read operation information.

LAN Port Test
To test if the LAN interface is working normally.
Tools:⚫

A computer with functional LAN interface⚫

A standard LAN cable

Steps:

10

SSG5000A Service Manual

1.

Connect the signal generator and the computer with a LAN cable via LAN interface.

2.

Press

UTILITY-> Interface , and set DHCP State ON, as shown in the following figure.

The signal generator will set IP Address, Subnet Mask and Gateway automatically in thisnetwork.
3.

Write down the displayed IP address. It will be used in later steps.

Figure 5 IP configuration interface

4.

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

5.

Select Manual Entry of LAN instrument, click “Next”, and enter the IP address as shown in thefollowing figures. Click Finish to establish the connection.

SSG5000A Service Manual11Note: Leave the LAN Device Name BLANK or the connection may fail.

6.

12

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

SSG5000A Service Manual

7.

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

8.

Click the “Input/Output” option button on the VISA Test Panel and click the “Query” option button
to view the Read operation information.

Note: The *IDN? Command (known as the Identification Query) should return the instrument
manufacturer, instrument model, serial number, and other identification information.

SSG5000A Service Manual13Performance Verification Test
This chapter explains testing the signal generator in order to verify performance specifications. For
accurate test results, please let the test equipment and the signal generator warm up 30 minutes
before testing.
Below is the required equipment:
Table 1 Test equipment
Equipment

Specification

Qty.

Recommended

Signal Analyzer

20Hz ~ 26.5 GHz

1

Keysight N9020

Power Meter

40GHz

1

R&S NRP40T

Frequency Counter

10 MHz153220A

N-2.92mm Cable

20GHz

1

BNC Cable

2 GHz

1

10 MHz output accuracy test
Specification
Reference frequency

10.000000 MHz

Initial calibration accuracy< 100 ppb

Test Connection Diagram

10MHz OUT

53220A

SSG5000A

14

SSG5000A Service ManualTest Procedures
1.

Connect [ 10MHz OUT ] port of the signal generator to the channel A of the 53220A.

2.

Set the 53220A to frequency counter mode, and set frequency ref to 10.000000 MHz

3.

Check if the frequency deviation ≤ 100ppb

Test Record Form
Frequency

Frequency Deviation

Pass/Fail10.000000 MHz

Absolute amplitude accuracy test
Specification
Level error (ALC on, temperature is 20 ℃ ~30 ℃)

Frequency (f)Maxperformance
power to 13dBm

13 dBm ~-20 dBm-20 dBm ~-90dBm-90 dBm ~-110 dBm≤ 0.7 dB

≤ 1.1 dB

≤ 0.7 dB

≤ 0.7 dB

≤ 1.1 dB

9 kHz ≤ f <100 kHz
100kHz ≤ f <1MHz-110 dBm ~-120 dBm

1MHz ≤ f ≤ 4 GHz≤ 1dB≤ 0.7 dB

≤ 0.7 dB

≤ 1.1 dB

≤ 2 dB

4 GHz < f ≤ 6 GHz≤ 1dB≤ 0.7 dB

≤ 0.7 dB

≤ 1.1 dB

≤ 2 dB

6 GHz < f ≤ 13.6 GHz≤ 1dB≤ 0.7 dB

≤ 0.7 dB

≤ 1.1 dB

≤ 2 dB

13.6 GHz < f ≤ 20 GHz≤ 1dB≤ 0.7 dB

≤ 0.9 dB

≤ 1.1 dB

≤ 2 dB

Test Devices
1.

Power Meter × 1

2.

SMA-2.92mm Adaptor × 1

3.

Dual-BNC Cable × 1

4.

Signal generator × 1

SSG5000A Service Manual15

Test Connection Diagram

RF OUTPUT

NRP40T(a)

Ref IN

10MHz OUT

RF OUTPUT

RF INPUT

N-2.92mm Cable(b)
Figure 6 Absolute amplitude accuracy connections

Test Procedures
1.

Connect the RF output terminal of the SSG5000A with the power meter, as shown in Figure 6
(a).

2.

Set the SSG5000A to output a sine waveform with -10 dBm amplitude. Then modify the output
frequency of the SSG5000A according to Table 2 and enable the RF output.

3.

Modify the frequency of the power meter accordingly each time the output frequency of the
SSG5000A is modified. Read the amplitude measurement value A1 and record it to the test
record form.

4.

Disconnect the SSG5000A and the power meter. Connect the [ 10 MHz OUT ] terminal of thesignal analyzer with the [ EXT REF IN ] terminal at the rear panel of the signal generator using adual-BNC cable to synchronize the two instruments.

16

SSG5000A Service Manual5.

Connect the [ RF OUTPUT ] terminal of the SSG5000A with the input terminal of the signal
analyzer using a dual-N cable as shown in Figure 6 (b).

6.

7.

Configure the signal analyzer:
1)

Set the self-calibration to normal and perform all of the calibration items

2)

Select the external frequency reference input.

3)

Set the span to 100 Hz.

4)

Set the reference level to -20 dBm.

5)

Set the input attenuation to 10 dB.

6)

Set the resolution bandwidth to 1 Hz.

Set the output frequency of the SSG5000A and the center frequency of the signal analyzer
according to Table 2 (the center frequency of the signal analyzer corresponds to the output
frequency of the SSG5000A).

8.

Each time the center frequency is changed, wait for the signal analyzer to finish a sweep andthen press Peak Search to find the maximum peak. Read the peak value A2 and record it to thetest record form.

9.

System Error (the input attenuation of the signal analyzer is 10 dB) = A2 - A1 and record themeasurement result.

10. Keep the connection shown in Figure 6 (b) unchanged. Press Mode Preset to restore the signal
analyzer to its factory setting and set the output amplitude of the SSG5000A according to Table
3.
11. Each time the output amplitude is changed, set the output frequency of the SSG5000A and thecenter frequency of the signal analyzer according to Table 2 (the center frequency of the signal
analyzer corresponds to output frequency of the SSG5000A).
12. Each time the center frequency is changed, wait for the signal analyzer to finish a sweep andthen press Peak Search to find the maximum peak. Read the peak value A3 and record it to thetest record form.
Note: when the output amplitude of the SSG5000A is -10 dBm, the measurement result A3,
namely, is the measurement value A2 of the signal analyzer in step 8.
13. Calculate the Global Error = A3 - Reference Value and record the result.
14. Calculate the amplitude accuracy using the formula Amplitude Accuracy = |Global Error System Error| and compare the calculation result with the specification.

SSG5000A Service Manual17

Table 2 Output Frequency of the SSG5000A
Output Frequency
103
kHz

1.33
MHz

51.33
MHz

533
MHz

1.933
GHz

2.433
GHz

2.933
GHz

7.933
GHz

9.433
GHz

11.933GHz

13.933GHz

15.933GHz

17.933GHz

19.933
GHz

3.933
GHz

4.933
GHz

5.933
GHz

Note: When the frequency of the signal measured is less than 10 MHz, make certain the signal
analyzer is in the DC coupling mode to ensure the measurement accuracy.

Table 3 Output Amplitude of the SSG5000A
Output amplitude-10 dBm-50 dBm-90 dBm-120 dBm

Power Meter
Measurement Value A1

Signal Analyzer
Measurement Value A2

Test Record Form
SSG5000A Output
Frequency

SystemError

103 kHz1.33 MHz
51.33 MHz
533 MHz
1.933 GHz2.433 GHz2.933 GHz3.933 GHz4.933 GHz5.933 GHz7.933 GHz9.933 GHz
11.933 GHz
13.933 GHz
15.933 GHz
17.933 GHz
19.933 GHz

18

SSG5000A Service ManualReference Value-10 dBm

SSG5000A Output
Frequency

Signal Analyzer
Measurement Value A3

GlobalError

Amplitude
Accuracy

Limit

Pass/Fail103 kHz1.33 MHz
51.33 MHz
533 MHz
1.933 GHz2.433 GHz2.933 GHz3.933 GHz4.933 GHz

< 0.7

5.933 GHz7.933 GHz9.933 GHz
11.933 GHz
13.933 GHz
15.933 GHz
17.933 GHz
19.933 GHz

Reference Value-50 dBm

SSG5000A Output
Frequency

Signal Analyzer
Measurement Value A3

GlobalError

Amplitude
Accuracy

Limit

Pass/Fail103 kHz1.33 MHz
51.33 MHz
533 MHz
1.933 GHz2.433 GHz2.933 GHz3.933 GHz4.933 GHz

< 0.7

5.933 GHz7.933 GHz9.933 GHz
11.933 GHz
13.933 GHz
15.933 GHz
17.933 GHz
19.933 GHz

SSG5000A Service Manual19Reference Value-90 dBm

SSG5000A Output
Frequency

SignalAnalyzer
Measurement Value A3

GlobalError

Amplitude
Accuracy

Limit

Pass/Fail103 kHz1.33 MHz
51.33 MHz
533 MHz
1.933 GHz2.433 GHz2.933 GHz3.933 GHz4.933 GHz

< 0.7

5.933 GHz7.933 GHz9.933 GHz
11.933 GHz
13.933 GHz
15.933 GHz
17.933 GHz
19.933 GHz

Reference Value-120 dBm

SSG5000A Output
Frequency

Signal Analyzer
Measurement Value A3

GlobalError

Amplitude
Accuracy

Limit

Pass/Fail103 kHz1.33 MHz
51.33 MHz
533 MHz
1.933 GHz2.433 GHz2.933 GHz3.933 GHz4.933 GHz

< 0.7

5.933 GHz7.933 GHz9.933 GHz
11.933 GHz
13.933 GHz
15.933 GHz
17.933 GHz
19.933 GHz

20

SSG5000A Service ManualSecond Harmonics
Specification
Spectral purity
CW mod, 1 MHz < f < 20 GHz, Level ≤ +10 dBm

Harmonics< -30 dBc

Test Devices
1.

Signal Analyzer × 1

2.

BNC-BNC Cable × 1

3.

N-2.92mm Cable × 1

Test Connection Diagram

Ref IN

10MHz OUT

RF OUTPUT

RF INPUT

N-2.92mm Cable

Test Procedures
1.

Synchronize the SSG5000A and signal analyzer. Connect the RF output terminal of the
SSG5000A with the RF input terminal of the signal analyzer.

2.

3.

Configure the SSG5000A:
1)

Set the output frequency according to the test record form as shown below

2)

Set the output level of the SSG5000A to 10dBm

Configure the signal analyzer:

SSG5000A Service Manual

21

1)

Preset.

2)

Set the input attenuation to auto.

3)

Set the reference level to the SSG5000A power plus 2dBm.

4)

Switch the preamp to off.

5)

Set the center frequency to the SSG5000A frequency.

6)

Set the span to 5 kHz.

7)

Set the resolution bandwidth to 100 Hz.

8)

Press

9)

Set the center frequency to the SSG5000A frequency×2.

10) Press

Peak

Peak

and get the power result as P0.

and get the power result as P1.

11) Record the P0-P1.
4.

The P0-P1 is the Second Harmonic Distortion. And compare the measurement result with thespecification.

Test Record Form
Freq(Hz)

Signal Power
P0 (dBm)

2th Harmonic
Power P1 (dBm)

Diff (dB)

Pass Range
(dB)

1 MHz

> 30.052 MHz> 30.0112 MHz> 30.0312 MHz> 30.0512 MHz> 30.0912 MHz> 30.01212 MHz> 30.01512 MHz> 30.01912 MHz> 30.02512 MHz> 30.02912 MHz> 30.03912 MHz> 30.04912 MHz> 30.05912 MHz> 30.022

Pass/Fail

SSG5000A Service Manual

7912 MHz> 30.09912 MHz> 30.011912 MHz> 30.013912 MHz> 30.015912 MHz> 30.017912 MHz> 30.019912 MHz> 30.0Internal AM modulation test
Specification
Amplitude Modulation
Modulation source

internal, external, internal + external

AM depth setting range

0.1 %~100 %Resolution of m[1] setting

0.01 %AM Accuracy

fmod=1 kHz< 4 % of m setting+1 %AM Distortion

fmod =1 kHz, m≤30 %,level=0 dBm<3 % (typ.)Note: [1] m represents the AM depth.

Test Devices
1.

Signal Analyzer × 1

2.

Dual-BNC Cable × 1

3.

N-2.92mm Cable × 1

SSG5000A Service Manual23Test Connection Diagram

Ref IN

10MHz OUT

RF OUTPUT
RF INPUT

N-2.92mm Cable

Test Procedures
1.

Synchronize the SSG5000A and signal analyzer. Connect the RF output terminal of the
SSG5000A with the RF input terminal of the signal analyzer as shown in above figure.

2.

3.

24

Configure the SSG5000A:
1)

Set the frequency to 1 GHz.

2)

Set the amplitude to 0 dBm.

3)

Enable the AM switch.

4)

Set the modulation source to internal.

5)

Set the modulation depth to 30%.

6)

Set the modulation rate to 1 kHz.

7)

Set the modulation waveform to “Sine”.

8)

Enable the modulation output switch

9)

Enable the RF output switch

MOD ON/OFF

RF ON/OFF.

.

Configure the Signal Analyzer:
1)

Select theAnalog Demod2)

Select the

AM

mode.

analog demodulation.

SSG5000A Service Manual

3)
4.

Set the span to 200 kHz.

Press

Meas Setup-> Auto BW & Scale and then read the results of the demodulated

signal in the AM analog demodulation test interface of the signal analyzer. Record themeasurement results (Pk - Pk)/2 and Distortion.
Note: the value (Pk - Pk)/2 represents the peak of the low frequency signal after AM
demodulated.
5.

Calculate the modulation accuracy and the distortion using the formulas:
AM Accuracy = |(Pk - Pk)/2 - 30%|,
AM Distortion = Distortion.
Then, compare the calculation results with the specifications.

Test Record Form
SSG5000A Output
Frequency

Test Item

Measurement

Calculated
ResultLimit

AM Accuracy< 4% ofsetting+1 %AM Distortion< 3 % (typ.)

1 GHz

Pass/ Fail

Internal FM modulation test
Specification
Frequency Modulation
Modulation source

internal, external, internal + external

Maximum FM deviation

N[1]*1 MHz (typ.)

Resolution of m[2] setting

0.1% of m setting or 1 Hz, whichever is larger

FM Deviation Accuracy

fmod =1 kHz, internal< 2% of m setting+20 Hz

FM Distortion

fmod =1 kHz,
m=N*1 MHz< 0.5 % (nom.)

Note:[1] Please refer to the value of N in the “Frequency Bands” section of the SSG5000A Data Sheet.
[2] m represents the FM deviation.

SSG5000A Service Manual25Test Devices
1.

Signal Analyzer × 1

2.

Dual-BNC Cable × 1

3.

N-2.92mmCable × 1

Test Connection Diagram

Ref IN

10MHz OUT

RF OUTPUT
RF INPUT

N-2.92mm Cable

Test Procedures
1.

Synchronize the SSG5000A and signal analyzer. Connect the RF output terminal of the
SSG5000A with the RF input terminal of the signal analyzer as shown in above figure.

2.

26

Configure the SSG5000A:
1)

Set the frequency to 1 GHz.

2)

Set the amplitude to -10 dBm.

3)

Enable the FM switch.

4)

Set the modulation source to internal.

5)

Set the modulation deviation to 500 kHz.

6)

Set the modulation rate to 1 kHz.

7)

Set the modulation waveform to “Sine”.

8)

Enable the modulation output switch

MOD .
SSG5000A Service Manual

9)
3.

4.

Enable the RF output switch

RF .

Configure the Signal Analyzer:
1)

Select theAnalog Demod

mode.

2)

Select the

FM

3)

Press

4)

Set the span to 2 MHz.

5)

Set the Channel BW to 1.5 MHz.

6)

Set the RF Res BW to 300 Hz.

analog demodulation.

Meas Setup->

Auto BW & Scale .

Read the results of the demodulated signal in the FM analog demodulation test interface of thesignal analyzer. Record the measurement results (Pk - Pk)/2 and Distortion.
Note: the value (Pk - Pk)/2 represents the peak of the low frequency signal after FM
demodulated.

5.

Calculate the modulation accuracy and the distortion using the formulas:
FM Accuracy = |(Pk - Pk)/2 – 500 kHz|,FM Distortion = Distortion.
Next, compare the calculation results with the specifications.

Test Record Form
SSG5000A Output
Frequency

Test Item

Measurement

Calculated
ResultLimit

FM Accuracy< 2% ofsetting+20 Hz

FM Distortion< 0.5 % (nom.)

1 GHz

Pass/ Fail

Internal ΦM modulation test
Specification
Phase Modulation
Modulation source

internal, external, internal + external

Maximum ΦM deviation

N[1]*5 rad

Resolution of m[2] setting

0.1 % of m setting or 0.01 rad, whichever is larger

SSG5000A Service Manual27ΦM Deviation Accuracy

fmod =1 kHz, internal,
deviation ≤ N*5 rad< 2 % of m setting + 0.05 radΦM Distortion

fmod =1 kHz, deviation ≤ N*5 rad< 0.5 % (nom.)

Note:
[1]

Please refer to the value of N in the “Frequency Bands” section of the SSG5000A Data Sheet.

[2]

m represents the ΦM deviation.

Test Devices
1.

Signal Analyzer × 1

2.

Dual-BNC Cable × 1

3.

N-2.92mmCable × 1

Test Connection Diagram

Ref IN

10MHz OUT

RF OUTPUT
RF INPUT

N-2.92mm Cable

Test Procedures
1.

Synchronize the SSG5000A and signal analyzer. Connect the RF output terminal of the
SSG5000A with the RF input terminal of the signal analyzer as shown in above figure.

2.

28

Configure the SSG5000A:
1)

Set the frequency to 1 GHz.

2)

Set the amplitude to -10 dBm.
SSG5000A Service Manual

3.

4.

3)

Enable the ΦM switch.

4)

Set the modulation source to internal.

5)

Set the modulation deviation to 2.5 rad.

6)

Set the modulation rate to 1 kHz.

7)

Set the modulation waveform to “Sine”.

8)

Enable the modulation output switch

9)

Enable the RF output switch

MOD ON/OFF .

RF ON/OFF .

Configure the Signal Analyzer:
1)

Select theAnalog Demod2)

Select the

ΦM

Press

Meas Setup

mode.

analog demodulation.
-> Auto BW & Scale and then read the results of the demodulated

signal in the ΦM analog demodulation test interface of the signal analyzer. Record themeasurement results (Pk - Pk)/2 and Distortion.
Note: the value (Pk - Pk)/2 represents the peak of the low frequency signal after ΦMdemodulated.
5.

Calculate the modulation accuracy and the distortion using the formulas:ΦM Accuracy = |(Pk - Pk)/2 – 2.5 rad|,ΦM Distortion = Distortion.
Then, compare the calculation results with the specifications.

Test Record Form
SSG5000A Output
Frequency

Test Item

Measurement

Calculated
ResultLimit

ΦM Accuracy< 2% ofsetting + 0.05
rad

ΦM Distortion< 0.5 % (nom.)

1 GHz

SSG5000A Service Manual

Pass/ Fail29

Pulse modulation test
Specification
Pulse modulation
Modulation source

internal, external
1 MHz < f ≤ 6 GHz> 70 dBc (typ.)6GHz < f ≤ 13.6 GHz> 80 dBc (typ.)13.6GHz < f ≤ 20 GHz> 75 dBc (typ.)Raise/fall time (10 %/90 %)10 % to 90 % of RF amplitude< 15 ns (typ.)Pulse repetition time

Setting range

40 ns~300 s

On/off ration

Test Devices
1.

Signal Analyzer × 1

2.

Dual-BNC Cable × 1

3.

N-2.92mmCable × 1

Test Connection Diagram

Ref IN

10MHz OUT

RF OUTPUT
RF INPUT

N-2.92mm Cable

Test Procedures
1.

Synchronize the SSG5000A and signal analyzer. Connect the RF output terminal of the
SSG5000A with the RF input terminal of the signal analyzer as shown in above figure.

2.

Configure the SSG5000A:
1)

30

Set the frequency to 1 GHz.

SSG5000A Service Manual2)

Set the level to -10 dBm.

3)

Enable the pulse state.

4)

Set the pulse source to internal.

5)

Set the pulse mode to single.

6)

Set the pulse period to 1s.

7)

Set the pulse width to 0.5s.

8)

Set the pulse trigger to Key.

9)

Enable the modulation output switch10) Enable the RF output switch
3.

4.

MOD ON/OFF .

RF ON/OFF .

Configure the Signal Analyzer:
1)

Set the center frequency to 1GHz.

2)

Set the span to 0 Hz.

3)

Set the reference level to 0 dBm.

4)

Set the input attenuation to 10 dB.

5)

Set the resolution bandwidth to 100 Hz.

6)

Set the video bandwidth to 100 kHz.

7)

Set the sweep time to 1s.

8)

Set the trigger mode to video trigger.

Press

Click to trigger

on the display of the SSG5000A to start a pulse sweep and wait for

the analyzer to finish a sweep. And then press
5.

Press

Marker-> Delta

Peak Search-> input 0.5s , then press

to locate the peak.

Click to trigger

on the display of the

SSG5000A again. Record the Delta value which equals to the - On/Off Ratio.
Test Record Form
SSG5000A Output
Frequency

Test Item

Measurement

Calculated
Result [1]

Limit

1 GHz

On/Off Ratio> 70 dBc

12GHz

On/Off Ratio> 80 dBc

15GHz

On/Off Ratio> 75 dBc

Pass/ FailNote:[1] Calculation Result = -Delta.

SSG5000A Service Manual31

LF AC test
Specification
Internal modulation generator (LF)
Frequency response

Sine wave < 0.3 dB

Test Devices
1.

Power Sensor × 1

2.

SMA-BNC Cable × 1

3.

USB Cable × 1

Test Connection Diagram

USB Cable

BNC-SMA Cable

Test Procedures
1.

Connect the LF output terminal of the SSG5000A with the input terminal of the power sensor.
Connect the [ USB] connector of the SSG5000A with the USB interface of the power

sensor as shown in figure above.
2.

Enable LF output switch. Select Sine waveform of the generator and set the amplitude to 0 dBm
and then step through the frequencies listed below in sequence. Then, set the amplitude to -20
dBm and repeat the frequency steps.

OutputVoltage

0 dBm

Frequency

Power Meter
Measurement Value- 20 dBm
Spec Range(dBm)

Power Meter
Measurement Value

Spec Range(dBm)

100 kHz200 kHz- 0.3 ~ 0.3- 20.3 ~ - 19.7

300 kHz32

SSG5000A Service Manual

400 kHz500 kHz600 kHz700 kHz800 kHz
900 kHz
1 MHz

3.

Compare the value measured from Power Sensor shown on the SSG5000A interface with thespec range shown in the above table.

LF DC test
Specification
DC Offset error±(1%+3 mV)

Test Devices
1.

Digital Multimeter × 1

2.

Banana-to-single-BNC Cable × 1

Test Connection Diagram

Banana to single BNC Cable

Test Procedures
1.

Connect the LF output terminal of the SSG5000A with the Voltage input terminal of the Digital
Multimeter as shown in figure above.

SSG5000A Service Manual

33

2.

Enable LF output switch. Select DC waveform of the generator and set the instrument to each
output value described in the table below. And then measure the output voltage with the DMM.
DC Offset

DMM Measurement Value

Spec Range ± (1%+3 mV)-2 V-2.017 V ~ -1.983 V-1 V-1.007 V ~ -0.993 V-100 mV-102 mV ~ -98 mV-10 mV-12.9 mV ~ -7.1 mV

0V-3 mV ~ 3 mV

10 mV

6.9 mV ~ 13.1 mV

100 mV

96 mV ~ 104 mV

1V

0.987 V ~ 1.013 V

2V

1.977 V ~ 2.023 V

Note: The output impedance of generator is 50Ω and the input impedance of DMM is high-z, so
the measured value should divide by 2 to get an accurate value.

3.

34

Compare the measured voltage with the spec range shown in the table above.

SSG5000A Service ManualAssembly ProceduresThis chapter describes how to remove the major modules from the SSG5000A signal generator. To
install the removed modules or replace new modules, please follow the corresponding operating
steps in reverse order.

This chapter includes the following topics:⚫

Safety Considerations 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.

Safety Considerations
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 threeminutes for the capacitors in the generators 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 thegenerators on a properly grounded ESD mat and wear a properly grounded ESD strap.

SSG5000A Service Manual35

List of Modules
The following removable modules are listed in the order of performing disassembly procedures.
Table 4 List of modules
Number of Module

Module1

Outer cover

2

Front-Panel

3

Power module

4

Main board

5

Control board

6

Channel plate module

7

Frequency multiplication plate module

8

Mechanical attenuator module

9

RF connector

10

LCD, Keyboard

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

Multifunctional screwdriver⚫

Antistatic gloves⚫

Custom screw hexagonal nut tool or long nose pliers

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

36

SSG5000A Service ManualRemove the Outer CoverSCREW X2SCREW X2SCREW X4

Removal steps:
1.

Remove the screws as shown in figures above.

2.

Press the place of the outer cover as the arrow point in the figure and remove the outer coverfrom the machine.

To install the outer cover, please perform the steps in reverse order.

SSG5000A Service Manual37Remove the Channel plate Moduleconnecting line
RF cablescrew×11

Removal steps:
1.

Disconnect the connecting line and the RF cable

2.

Remove the eleven screws located on the channel plate module.

3.

Next, remove the channel plate module.

To install the channel plate module, please follow the steps in reverse order.

38

SSG5000A Service ManualRemove the Power Module

power cablescrew×4

Removal steps:
1.

Disconnect the power cable

2.

Remove the four screws located on the metal shell3.

Next, remove the Power Module

To install the Power Module, please follow the steps in reverse order.

SSG5000A Service Manual39Remove the frequency multiplication plate module

screw×6

RF cable

Removal steps:
1.

Disconnect the RF cable

2.

Remove the six screws located on the metal shell3.

Next, remove the frequency multiplication plate Module

To install the frequency multiplication plate Module, please follow the steps in reverse order.

40

SSG5000A Service ManualRemove the Mechanical attenuator module

RF cablescrew×4

Removal steps:
1.

Disconnect the RF cable

2.

Remove the four screws located on the metal shell3.

Next, remove the mechanical attenuator module

To install the mechanical attenuator module, please follow the steps in reverse order.

SSG5000A Service Manual41Remove the Control Board

Removal steps:
1.

Unlock the hook as show in the above figure

2.

Remove the control board

42

SSG5000A Service ManualRemove the Main Board

screen cableScrew X14

RF cableconnecting line
Nut×6

Removal steps:
1.

Place the signal generator bottom up.

2.

Disconnect the screen cable connected to the main board module from the front module and RF
cable.

3.

Remove the screws located on the main board.

4.

Remove the six nuts from the back BNC terminal.

To install Main Board, please perform the steps in reverse order.

SSG5000A Service Manual43Remove the front panel

SCREW × 8
SCREW×4

Removal steps:
1.

Remove the eight screws on the rubber feet2.

Remove the four screws located on the front panel.

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

44

SSG5000A Service ManualRemove the LCD and Keyboard

KNOB

SCREW ×13
+

+

+

+

+

+
+

+

+

+
+
+

+

SCREW × 4

Removal steps:
1.

Remove the thirteen screws on the keyboard.

2.

Remove the four screws located on the edge of the display module.

3.

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

4.

Separate the modules carefully.

SSG5000A Service Manual45

Contact SIGLENT
Headquarters:
SIGLENT Technologies Co., Ltd
Add: Bldg No.4 & No.5, Antongda Industrial Zone, 3rd LiuxianRoad, 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
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

46

SSG5000A Service Manual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/MW signal
generators, 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 inelectronic 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.

Follow us on
Facebook: SiglentTech

7086165 Augsburg, Germany
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

SSG5000A Service Manual1