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SIGLENT TECHNOLOGIES SSA5000 Series Service Manual

Spectrum analyzer
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SSA5000X
Spectrum Analyzer
Service Manual
EN_01B

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Summary of Contents for SIGLENT TECHNOLOGIES SSA5000 Series

  • Page 1 SSA5000X Spectrum Analyzer Service Manual EN_01B...
  • Page 3 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.

  • Page 4: Important Safety Information

    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 to the instrument and any products connected to it.
  • Page 5 After the equipment is started, there will be no alarm information and error information at the interface 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.
  • Page 6 Safety Terms and Symbols When the following symbols or terms appear on the front or rear panel of the instrument or in this manual, 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.
  • Page 7 Working Environment The design of the instrument has been verified to conform to EN 61010-1 safety standard per the following limits: Environment The instrument is used indoors and should be operated in a clean and dry environment with an ambient temperature range. Note: Direct sunlight, electric heaters, and other heat sources should be considered when evaluating the ambient temperature.
  • Page 8 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 the transient voltage to a correspondingly low level.
  • Page 9 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.
  • Page 10 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 electrical shock, unplug the power cord from the AC outlet before cleaning. Warning: Electrical Shock Hazard! No operator serviceable parts inside.
  • Page 11 Canadian certification 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. 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.

  • Page 12: Table Of Contents

    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......................
  • Page 13 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 ..............

  • Page 15: General Features

    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 bright easy to read display, powerful and reliable automatic measurements, and plenty of impressive features.

  • Page 16: Prepare Information

    Prepare Information Before initiating performance verification or any adjustments, it is recommended to follow these procedures. 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 ⚫...

  • Page 17: Functional Check

    Functional check Power-on Inspection The normal operating voltage for SSA5000X series spectrum analyzers is in the range of 100- 240V, 50/60Hz or 100-120V 400Hz. Please use the power cord provided as accessories to connect the instrument to the power source 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...
  • Page 18 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 SSA5000A Service Manual...

  • Page 19: Interface Test

    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 more enhanced capabilities. In order to ensure the analyzer is operating properly, it is recommended to first test the interfaces.

  • Page 20: Usb Device Test

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

  • Page 21: Lan Port Test

    LAN Port Test Use to test the LAN interface functionality. Tools: ⚫ A computer with functional LAN interface ⚫ A standard LAN cable Steps: Connect the spectrum analyzer and the computer using a LAN cable via LAN interface. 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.
  • Page 22 Figure 4 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 5 SSA5000A Service Manual...
  • Page 23 Figure 6 After a brief scan, the connection should be shown under Network Devices: Figure 7 Right-click on the product and select Open NI-VISA Test Panel: SSA5000A Service Manual...
  • Page 24 Figure 8 Click “Input/Output” option button and click “Query” option button. If everything is correct, you will 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 9 SSA5000A Service Manual...

  • Page 25: Performance Verification Test

    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.

  • Page 26: Absolute Amplitude Accuracy Test

    Absolute Amplitude accuracy Test Specification 20 °C to 30 °C, fc=50 MHz, RBW=VBW=1 kHz, peak detector, attenuation = 20 dB Preamp off ±0.4 dB, input signal -10 dBm Absolute amplitude accuracy Preamp on ±0.5 dB, input signal -40 dBm Power Meter REF OUT REF IN RF Generator...
  • Page 27 Press Peak to find the maximum value of the spectrum analyzer and record the result P2 Absolute amplitude accuracy = P1 – P2 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...

  • Page 28: Frequency Response Test

    Frequency Response Test Specification 20 °C to 30 °C , attenuation = 20 dB, reference frequency 50 MHz 10 MHz~7.5 GHz ±1.5 dB, typ. Preamp off 7.5 GHz~13.6GHz ±2.0 dB, typ. 13.6 GHz~26.5 GHz ±2.5 dB, typ. Power Meter REF OUT REF IN RF Generator SSA5000X...
  • Page 29 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.
  • Page 30 10 GHz 11 GHz 12 GHz 13 GHz 14 GHz 15 GHz 16 GHz 17 GHz 18 GHz 19 GHz 20 GHz 21 GHz 22 GHz 23 GHz 24 GHz 25 GHz 26 GHz SSA5000A Service Manual...

  • Page 31: Display Average Noise Level (Danl) Test

    Display Average Noise Level (DANL) Test Specification 20 °C to 30 °C, attenuation = 0 dB, sample detector, trace average >50 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.)
  • Page 32 Step: Connect a 50Ω load to the RF IN port of spectrum analyzer as the figure shows Configure the spectrum analyzer: Set the start frequency to 9 kHz and the stop frequency to 100kHz Set the RBW to 10Hz and VBW to 1Hz Set the detect type to Sample Press Trace ->...

  • Page 33: Phase Noise Test

    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.) Figure 13 Diagram of Phase Noise Test System Step: Connect the signal generator and spectrum analyzer as Figure 13 shows...
  • Page 34 Phase noise of 1 GHz @ 1 MHz offset = P2 - P1 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 P2 - P1...

  • Page 35: Toi Test

    TOI Test Specification fc≥50 MHz, two -20 dBm tones at input mixer spaced by 100 kHz, attenuation = 0 dB, preamp off, 20 °C to 30 °C 50 MHz~7.22 GHz 11 dBm, 15 dBm (typ.) IIP3 7.22 GHz~26.5 GHz 10 dBm, 14 dBm (typ.) BNC-BNC BNC-BNC REF IN...
  • Page 36 Press Peak to find the maximum value, then change the marker type to delta and press Next Peak twice, record delta amplitude value DELTA. IIP3 = -20dBm – DELTA/2, check if the calculate result ≥ +11 dBm. 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 ≥...

  • Page 37: Frequency Accuracy Test

    Frequency Accuracy Test Specification 20 °C to 30 °C, fc=10MHz Reference frequency 10.000000 MHz Initial calibration accuracy <1 ppm Figure 15 Diagram of Frequency Accuracy Test System Steps: Connect ref out port of the spectrum analyzer to the channel A of the SDG2042X, which referenced by an OCXO Set the SDG2042X to frequency counter mode, and set frequency ref to 10.000000 MHz Check if the frequency deviation ≤...

  • Page 38: 1Db Gain Compression Test

    1dB Gain Compression Test Specification 20 °C to 30 °C, fc=50MHz, attenuation = 0 dB, preamp off 1dB Gain Compression >-5dBm Figure 16 Diagram of 1dB Gain Compression Test System Steps: Connect the signal generator, RF generator and power meter as Figure 16(a) shows Set the output frequency of signal generator 50 MHz and the amplitude to -25 dBm.
  • Page 39 Enable the output of signal generator and disable the output of RF generator. Observe the measurement value of the power meter. Adjust the output amplitude of signal generator until the reading of the power meter becomes -25 dBm. Enable the output of RF generator and disable the output of signal generator. Observe the measurement value of the power meter.

  • Page 40: Second Harmonic Distortion Test

    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 Figure 17 Diagram of Second Harmonic Distortion Test System Steps: Connect the RF generator, 3200 MHz low pass filter and power meter as figure 3-8(a) shows Set the output frequency of the RF generator to 3200 MHz and the amplitude to -20 dBm.
  • Page 41 Set the span to 10 kHz. Set the reference level to -20 dBm. Set the input attenuation to 0 dB. Set the resolution bandwidth to 300 Hz. Set the video bandwidth to 10 Hz. Set the sweep time to auto and the auto sweep time to accuracy. Press Trace ->...

  • Page 42: Input Attenuation Error Test

    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 <±0.7dB 7.22 GHz~26.5 GHz REF OUT RF Generator Power Meter RF OUT N-SMA Figure 18 Diagram of the Input Attenuation Error Test System Steps: Connect the RF generator and power meter as shown in figure 3-9(a).
  • Page 43 Set the output frequency of the RF generator to 50 MHz and the amplitude to P Configure the spectrum analyzer: Set the center frequency to 50 MHz. Set the span to 10 kHz. Set the reference level to 0 dBm. Set the input attenuation to 20 dB.
  • Page 44 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 P(ATT=0~30dB)

  • Page 45: Assembly Procedures

    Assembly Procedures This 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: ⚫...

  • Page 46: List Of Modules

    List of Modules The following removable modules are listed in the order of performing disassembly procedures. Table 3 List of modules Number of Module Module Back-Shell Rear Metal Cover Local Oscillator board Frequency Multiplier Board Channel Board Intermediate Board Main Board Front Metal Cover Key Board LCDI Board...

  • Page 47: Diagram Of Spectrum Analyzer

    Diagram of Spectrum Analyzer A6 KEY A2 MUL A3 LO SMA J7 SMA J8 MCX J11 MCX J15 RIBBON CABLE RIBBON CABLE RIBBON CABLE RIBBON CABLE HIGH HIGH A7 LCDI SMA J6 SMA J9 MCX J10 SPEED SPEED A5 MA MCX J12 A8 IOB MCX J14...

  • Page 48: Introduction Of Rf Cable And Interface

    Introduction of RF Cable and Interface Figure 19 Code of the RF Cable and Interface. The connection relationship shown in the following table: J4 to J13 MCX to MCX J10 to J12 MCX to MCX J14 to J16 MCX to MCX J17 to J15 SMB to SMB J15 to J11...

  • Page 49: Removing The Back-Shell

    Removing the Back-Shell Metal Handle PWM3*10 PM4*6 Figure 20 Picture of the Back-Shell. Removal steps: Remove each screws of Back-Shell as shown in figures above. Remove the Metal Handle. Remove the Back-Shell slowly. To install the rear metal cover, please perform these steps in reverse order. SSA5000A Service Manual...

  • Page 50: Removing The Rear Metal Cover

    Removing the Rear Metal Cover PWM3*6 Figure 21 Diagram for removing rear metal cover. Removal steps: Place the analyzer down on a soft surface such as an anti-static mat. Remove the twelve screws located on the rear metal cover. Lift the rear metal cover up carefully. Disconnecting the cable marked number one to number six.

  • Page 51: Removing The Local Oscillator Board, Frequency Multiplier Board, Channel Board, Intermediate Frequency Board

    Removing the Local Oscillator Board, Frequency Multiplier Board, Channel Board, Intermediate Frequency Board A3 LO A2 MUL Removal steps: Disconnecting all the connection of the cables is suggested, before you start remove the local oscillator board and frequency multiplier board. Remove the coaxial switch on channel board.
  • Page 52 A4 IF A1 CH Figure 22 Diagram for removing A1, A2, A3, A4. Remove all the screws on channel board and intermediate frequency board marked red and yellow circle. Remove the channel board and intermediate frequency board. To install the channel board and intermediate frequency board, please perform these steps in reverse order.

  • Page 53: Removing The Main Board

    Removing the Main Board Disconnecting the cable carefully A5 MA Figure 23 Diagram for removing A5 Removal steps: Remove the screws on main board marked yellow and green circle. Disconnecting the connection of key board and touch panel to main board marked brown circle. Remove sub board from the main board.

  • Page 54: Removing The Front Metal Cover

    Removing the Front Metal Cover Figure 24 Diagram for removing front metal cover. Remove the screws marked yellow circle. Remove the front metal cover carefully. To install the front metal cover, please perform these steps in reverse order. SSA5000A Service Manual...

  • Page 55: Removing The Key Board And Lcdi Board

    Removing the Key Board and LCDI Board A6 KEY A7 LCDI Figure 25 Diagram for removing A6, A7. Remove the screws marked yellow circle. Disconnecting the connection marked blue circle (magnetic ring) and brown circle (screen line group). Remove the key board and LCDI board. To install the key board and LCDI board, please perform the above steps in converse order.

  • Page 56: Removing The Usb Board

    Removing the USB Board A8 USB Figure 26 Diagram for removing A8. Remove the screws marked yellow circle. 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. SSA5000A Service Manual...

  • Page 57: Removing The Power Supply Board And Iob Board

    Removing the Power Supply Board and IOB Board POWER A9 IOB Figure 27 Diagram for removing A9, A10. Remove the screws in Power Supply Board marked yellow red circle. Disconnecting all the cable of the Power Supply Board. Remove the Power Supply Board. Remove the screws in IOB Board marked yellow circle.
  • Page 58 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...

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