SIGLENT TECHNOLOGIES SDS2000X HD Series Service Manual
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SIGLENT TECHNOLOGIES SDS2000X HD Series Service Manual

Digital oscilloscope
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SDS2000X HD Series
Digital Oscilloscope
Service Manual
EN01A

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Summary of Contents for SIGLENT TECHNOLOGIES SDS2000X HD Series

  • Page 1 SDS2000X HD Series Digital Oscilloscope Service Manual EN01A...

  • Page 3: Table Of Contents

    Contents IMPORTANT SAFETY INFORMATION ....................3 ..........................3 ENERAL AFETY UMMARY .......................... 6 AFETY ERMS AND YMBOLS ..........................7 ORKING NVIRONMENT ..........................8 OOLING EQUIREMENTS ......................9 OWER AND ROUNDING EQUIREMENTS ..............................10 LEANING ..........................10 BNORMAL ONDITIONS ............................ 11 AFETY OMPLIANCE FIRST STEPS ............................
  • Page 4 DISASSEMBLY PROCEDURES ....................... 48 ......................48 AFETY ONSIDERATION AND AUTIONS ..............................49 OOLS ISTS .......................... 49 ISASSEMBLY ROCEDURES 6.3.1 To Remove the Handle and Foot ......................49 6.3.2 To Remove the Rear Cover ......................... 50 6.3.3 To Remove the Rear Metal Cover ....................... 51 6.3.4 To Remove the Back-Chassis Module ....................

  • Page 5: 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 6 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.
  • Page 7 Only a lithium battery with the same specifications as the original battery should be used to replace the battery on board. Not to use the equipment for measurements on mains circuits, not to use the equipment for measurements on voltage exceed the voltage range describe in the manual. The maximum additional transient voltage cannot exceed 1300 V.

  • Page 8: Safety Terms And Symbols

    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 9: Working Environment

    Working Environment The design of the instrument has been verified to conform to the 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.

  • Page 10: Cooling Requirements

    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 11: Power And Grounding Requirements

    Power and Grounding Requirements The instrument operates with a single-phase, 100 to 240 Vrms ( +/-10% ) AC power at 50/60 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 .) , the instrument can consume up to 120 W of power.

  • Page 12: Cleaning

    CAUTION: The outer shells of the front panel terminals (CH1, CH2, CH3, CH4, EXT) are connected to the instrument’s chassis and therefore to the safety ground. Cleaning Clean only the exterior of the instrument, using a damp, soft cloth. Do not use chemicals or abrasive elements.

  • Page 13: Safety Compliance

    Safety Compliance This section lists the safety standards with which the product complies. U.S. nationally recognized testing laboratory listing  UL 61010-1:2012/R: 2018-11. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.  UL 61010-2-030:2018.

  • Page 14: First Steps

    First Steps Delivery Checklist First, verify that all items listed on the packing list have been delivered. If you note any omissions or damage, please contact your nearest SIGLENT customer service center or distributor as soon as possible. If you fail to contact us immediately in case of omission or damage, we will not be responsible for replacement.

  • Page 15: Document Conventions

    Document Conventions For convenience, text surrounded by a box border is used to represent the button of the front panel. For example, Default represents the "Default" button on the front panel. Text with shading is used to represent the touchable or clickable menu / button / region on the touch screen.

  • Page 16: Prepare Information

    Prepare Information Before initiating performance verification or any adjustments, it is recommended the user follow these procedures. The following topics are discussed in this chapter.  How to perform functional checks  How to operate standard interface tests  How to use the self-calibration routine ...

  • Page 17: Probe Compensation

    CAUTION: To avoid electric shock, make sure that the instrument is correctly grounded to the earth before connecting AC power. Press the Power button located at the lower-left corner of the front panel to start the oscilloscope. After the boot-up the oscilloscope will begin to perform its power-on tests automatically, after which the Default button can be pressed to recall the factory default settings.

  • Page 18: Auto Setup

    Under Perfectly Over Compensated Compensated Compensated Use a non-metallic driver to adjust the low-frequency compensation adjustment hole on the probe until the waveform displayed is as the “ Perfectly compensated ” in the figure above. 4.1.3 Auto Setup Press the Auto Setup button to enable the waveform auto setting function. The oscilloscope will automatically adjust the horizontal time base, vertical scale, and trigger mode according to the input signal to obtain an optimum waveform display.
  • Page 19 Figure 2 Calibration Interface The oscilloscope will not respond to any operations until the self-calibration is finished. After the self- calibration is completed, touch the screen or press any button to exit. SDS2000X HD Service Manual...

  • Page 20: Interface Test

    Interface Test The SDS2000X HD series oscilloscope is designed with four standard interfaces: USB Host, USB Device, LAN, and Pass/Fail. Connecting to other instruments via these interfaces enables the oscilloscope to achieve additional capabilities. To ensure the oscilloscope is operating properly, it is recommended that the user first test the interfaces.

  • Page 21: Usb Device Test

    4.2.2 USB Device Test To test if the USB Device interface is operating correctly. Tools:  A computer with a USB interface  A standard USB cable ( Type AB )  National Instruments NI-Max software Steps: Set up National Instruments Measurement and Automation Explorer ( NI-Max ) software on a computer and install the driver step by step following the instructions.

  • Page 22: Lan Port Test

    4.2.3 LAN Port Test Use to test if the LAN interface operates correctly when connected with NI Visa software. Tools:  A computer with a LAN interface  A standard LAN cable  National Instruments NI-MAX software Steps: Set up the National Instruments Measurement and Automaton Explorer ( NI-MAX ) software on a computer and install the driver using the following instructions.
  • Page 23 Figure 4 IP Setting interface Connect the oscilloscope to the computer using a LAN cable via the LAN interface ports. Run NI-MAX software. Click “ Device and Interface ” at the upper left corner of the NI software interface and select the “ LAN ” device symbol. Click “...

  • Page 24: Pass/Fail Out Test

    4.2.4 Pass/Fail out Test To test the Mask Test function and signal output by viewing on another oscilloscope. Tools:  A second oscilloscope  Two BNC cables Steps: Turn on the SDS2000X HD oscilloscope. Enable Channel 1. Perform Analysis > Mask Test to open the Mask Test dialog box, and touch Mask...
  • Page 25 Table 1 Mask Test Settings Parameter Setting Enable to Test Source Type All in Display Info Mask Setting Mask X 0.32 Mask Y 0.32 Note: Press Create Mask to complete Mask setting, after mask x setting and mask y setting. After selecting the corresponding items as shown in the table above, the screen will appear as in Figure 5: Figure 5 Mask Test Interface...
  • Page 26 All data points of the waveform must be inside the mask to pass the test. Even a single point outside the mask will cause a failure. Connect the Pass/Fail output signal ( on the rear panel ) to the input terminal of another oscilloscope.

  • Page 27: Performance Test

    Performance Test This chapter explains testing the oscilloscope to verify performance specifications. For accurate test results, please let the test instruments and the oscilloscope warm-up for at least 30 minutes before testing. Below is the required equipment for the test: Table 2 Required test equipment Equipment Description...
  • Page 28 9500B 9530 Active Head 9530 Active Head Figure 8 Test setup for Channel skew Note: The 9530 active heads in Figure 8 are connected to any two channels of the 9500B, and their BNC connectors are connected to specified channels of the oscilloscope according to the test. Rear panel of DUT 9500B 9530 Active Head...

  • Page 29: To Verify Dc Gain Accuracy

    The Self Calibration procedure is described in the section Self-Calibration. If the environmental temperature changes by more than 5℃, the Self Calibration operation must be performed to achieve the specified performance. To Verify DC Gain Accuracy To calculate the DC gain error of a vertical scale, at least nine input and reading values are required to generate a two-dimensional array.
  • Page 30 Steps: Set the 9500B output to On. Connect a selected channel of the oscilloscope to the 9500B with an active head as shown in Figure 7. Set the oscilloscope into Non-interleaving mode (both CH1/CH2 and/or both CH3/CH4 activated). Set the timebase of the oscilloscope to 500 us/div, the “ Max Mem Depth ” in the menu of Acquire to 1M, and the impedance of the selected channel to 1 MΩ.
  • Page 31 Vertical Applicable DC Gain DC voltage output levels Scale Impedance Error Limit -26.625 V, -19.96875 V, -13.3125 V, -6.65625 V, 7.1 V/div 1MΩ ± 0.6% 0 V, 6.65625 V, 13.3125 V, 19.96875 V, 26.625 V -21.375 V, -16.03125 V, -10.6875 V, -5.34375 V, 5.7 V/div 1MΩ...
  • Page 32 Vertical Applicable DC Gain DC voltage output levels Scale Impedance Error Limit -1631.25 mV, -1223.4375 mV, -815.625 mV, 435 mV/div 1MΩ -407.8125 mV, 0 mV, 407.8125 mV, ± 0.6% 815.625 mV, 1223.4375 mV, 1631.25 mV -1293.75 mV, -970.3125 mV, -646.875 mV, 345 mV/div 1MΩ...
  • Page 33 Vertical Applicable DC Gain DC voltage output levels Scale Impedance Error Limit -163.125 mV, -122.34375 mV, -81.5625 mV, 1MΩ 43.5 mV/div -40.78125 mV, 0 mV, 40.78125 mV, ± 0.6% 81.5625 mV, 122.34375 mV, 163.125 mV -129.375 mV, -97.03125 mV, -64.6875 mV, 1MΩ...
  • Page 34 Vertical Applicable DC Gain DC voltage output levels Scale Impedance Error Limit -8.4 mV, -6.3 mV, -4.2 mV, -2.1 mV, 1MΩ 2.80 mV/div ± 1.5% 0 mV, 2.1 mV, 4.2 mV, 6.3 mV, 8.4 mV -6.75 mV, -5.0625 mV, -3.375 mV, -1.6875 mV, 1MΩ...

  • Page 35: To Verify Offset Accuracy

    To Verify Offset Accuracy Two components must be verified for offset accuracy. The first part is the offset gain error relative to the setting of an offset value ( Gain component ). The second part is the error only relative to the setting of the vertical scale ( Full-scale component ).
  • Page 36  “ V ” represents the measurement value on the oscilloscope. mean  “ Offset ” represents the difference between V and V error mean setting Table 6 Instance of Offset Gain Error Calculation Vsetting Offsetsetting Vmean Offseterror Offset Gain Error Point 1 10.1...
  • Page 37 Table 7 Offset Accuracy Full-scale Gain Component Vertical Scale Offsetsetting Component Error Limit Error Limit（V） 2 V/div -200 V, -100 V, 0 V, 100 V, 200 V ± 0.5% ± 0.081 500 mV/div -160 V, -80 V, 0 V, 80 V, 160 V ±...

  • Page 38: To Verify Dc Measurement Accuracy

    To Verify DC Measurement Accuracy Some products do not list the DC measurement accuracy in the datasheet, but it can be calculated by combining the DC gain Accuracy and Offset Accuracy. Verifying this specification is not necessary if the DC gain accuracy and Offset accuracy had been verified. Table 8 DC Measurement Accuracy DC Measurement Accuracy ±...

  • Page 39: To Verify Bandwidth

    To Verify Bandwidth This test checks the bandwidth of all the analog channels. In the test, the impedance of 9500B should be set to be the same as analog channels. Table 10 Vertical Scales should be verified Impedance Vertical Scale 50Ω...
  • Page 40 129.51M, 148.24M, 169.68M, 194.23M, 222.33M, 254.49M, 291.30M, 333.44M, ,381.67M, 436.88M, 500.00M 1M, 1.14M, 1.31M, 1.50M, 1.72M, 1.97M, 2.25M, 2.57M, 2.95M, 3.37M, 3.86M, 4.42M, 5.06M, 5.79M, 6.63M, 7.59M, 8.69M, 9.94M, 11.38M, 13.03M , 14.91M, 17.07M, 19.54M, 50 Ω SDS2204X HD 22.36M, 25.60M, 29.30M, 33.54M, 38.39M, 43.94M, 50.30M, 57.58M, 65.90M, 75.43M, 86.35M, 100.00M, 113.14M, 129.51M , 148.24M, 169.68M, 200.00M, 222.32M, 254.49M, 291.30M , 350.00M...
  • Page 41 Table 12 Limited Range Model Impedance Frequency Point (Hz) Range ≤ 51M ( -0.5, 0.5 ) dB ≤ 168M ( -0.8, 0.8 ) dB 50 Ω ≤ 334M SDS2504X HD ( -1.2, 1.0 ) dB ≤ 501M ( -3.0, -1.0 ) dB ≤...

  • Page 42: To Verify Time Base Accuracy

    To Verify Time Base Accuracy This test verifies the time base accuracy of the oscilloscope. Time Base Accuracy: |Frequency Error| < 20 Hz Note: 20 Hz is the initial accuracy limit of measuring the 10 MHz input. If the oscilloscope has been used for a long time ( e.g.

  • Page 43: To Verify Trigger Level

    To Verify Trigger Level This test checks the trigger level accuracy of the analog channels. In this test, the impedance of both the 9500B and the oscilloscope should be set to 50 Ω. Trigger Level Accuracy: |Error| ≤ 20 mV Steps: Connect the selected channel of the oscilloscope to the 9500B as shown in Figure 7.

  • Page 44: To Verify Ext Trigger Level

    To Verify Ext Trigger Level This test checks the trigger level accuracy of the external trigger channel. In this test, the impedance of both the 9500B and the oscilloscope should be set to 1 MΩ. Table 13 EXT Trigger Level Error Limit Trigger Channel Vertical Scale Trigger Level Error Limited Range...

  • Page 45: To Verify Trigger Sensitivity

    Set the trigger level to 0mV and -1035 mV, and repeat step 13 to step 15 in turn. Set trigger slope to negative, and repeat step 13 to step 16. Disconnect the test connection. To Verify Trigger Sensitivity This test checks trigger sensitivity at the frequency of 10 MHz and also at the bandwidth frequency. In the test, the impedance of 9500B should be set to 50 Ω.
  • Page 46 The steps above are for testing the trigger sensitivity of the analog channels. The following steps are used to test the external trigger sensitivity. Steps: Connect the external trigger channel of the oscilloscope to the 9500B, as shown in Figure 7. Set the impedance of the 9500B to 50 Ω, amplitude to 200 mV, frequency to 10 MHz, and waveform to sine.

  • Page 47: To Verify Channel Skew

    To Verify Channel Skew This test checks the skew between two analog channels. In this test, the impedance of both the 9500B and the oscilloscope should be set to 50 Ω. Channel Skew Limit: |T@L| ≤ 100 ps Steps: Connect two selected channels of the oscilloscope to the 9500B shown as in Figure 8. Press the ‘...

  • Page 48: 5.10 To Verify Input Impedance

    5.10 To Verify Input Impedance This test checks the input impedance of all analog channels and the Ext trigger channel with different coupling modes and vertical scales ( 100 mV/div, 200 mV/div, and 2 V/div ). Table 15 Input Impedance data Coupling and Capacitance Channel...
  • Page 49 Test at 2 V/div and 200 mV/div, using the same procedure as steps 9 to 10. Check the other analog channels in the same way as steps 8 to 11. Disconnect the test connection When checking the EXT trigger channel, it is the same as checking analog channels. Record the reading displays on the screen of the 9500B, and check to verify it is within the specified range in Table 15.

  • Page 50: Disassembly Procedures

    Disassembly Procedures This chapter describes how to remove major parts from the SDS2000X HD series oscilloscope. Safety Consideration and Cautions Only qualified personnel should perform the disassembly procedures. Disconnect the power before you begin to remove or replace the parts. Otherwise, potential personal injuries or damages to the components may occur.

  • Page 51: Tools Lists

    Tools Lists Use these tools to remove or replace the modules in the oscilloscope:  Multifunction screwdriver  Antistatic gloves  Custom screw hexagonal nut tool or long nose pliers Disassembly Procedures This section describes how to remove the modules in the oscilloscope in detail. To install the removed parts or replace a new part, follow the instructions in reverse order.

  • Page 52: 6.3.2 To Remove The Rear Cover

    Steps: Lift the handle and remove the two PM4*8 screws on the rear-cover of the handle. Then push the two part of handle to different direction to remove the handle. Remove the four PWM3*8 screws from the bottom of each foot, then remove the two feet. 6.3.2 To Remove the Rear Cover Figure 12 To remove the rear cover Steps:...

  • Page 53: 6.3.3 To Remove The Rear Metal Cover

    6.3.3 To Remove the Rear Metal Cover Figure 13 To remove the rear metal cover Steps: Remove the BNC nut on the rear metal cover. Remove the eight screws from the outside of the rear metal cover. Remove the rear metal cover. SDS2000X HD Service Manual...

  • Page 54: 6.3.4 To Remove The Back-Chassis Module

    6.3.4 To Remove the Back-Chassis Module Figure 14 To remove the back panel chassis module. Steps: Remove the eight PM3*6 screws outside the back panel chassis. Lift the back panel chassis module slowly and unplug the connecting cables from the mainboard. Lift the back-chassis module away.

  • Page 55: 6.3.5 To Remove The Power Supply Module, Fan And I/O Board

    6.3.5 To Remove the Power Supply Module, Fan and I/O board Figure 15 To remove the power supply module and fan. Steps: Remove the four PM3*6 screws on the power supply and remove the power supply. Remove the four PB5*30 screws bottom of the fan and remove the fan. Remove the three PM3*6 screws on the I/O board remove the I/O board.

  • Page 56: To Remove Front Panel

    6.3.6 To Remove Front Panel Figure 16 To remove the mainboard and front panel Steps: Remove the channel overlay sticker from the front panel and remove the four PM3*6 screws. Unplug the side connecting cable from the front panel. Remove the seven screws around the front chassis module. Lift the front chassis module slowly and unplug the middle connecting cable from the front panel.

  • Page 57: To Remove The Probe Interface Board And Mainboard

    6.3.7 To Remove the Probe interface board and Mainboard Steps: Remove the one PM3*6 screws on the probe interface board, unplug the connecting cable and remove the probe interface board. Remove the four nuts from the front BNC connectors. Remove the thirteen PM3*6 screws on the mainboard and remove the mainboard. SDS2000X HD Service Manual...

  • Page 58: To Remove The Rubber Keypad And Keyboard

    6.3.8 To Remove the Rubber Keypad and Keyboard Figure 17 To remove the rubber keypad and keyboard Steps: Remove each front-panel knob by firmly grasping the knob ( with pliers protected by a soft cloth to prevent scratches, if necessary ) and pull it away from the front panel. Remove the six PC3*6 screws on the keyboard.

  • Page 59: Solving General Problems

    Solving General Problems This chapter includes suggestions for solving general problems. The screen is still dark ( no display ) after power on:  Check if the power button is illuminated. Orange indicates the oscilloscope is in standby status and it needs a press to power on. White indicates that the oscilloscope is in the power- on status.
  • Page 60 channel connector ).  Check whether the probe is correctly connected to the item to be tested.  Check whether there are signals generated from the item to be tested.  Check the Trace option of the associated channel is Visible, not Hidden. ...
  • Page 61  Check the trigger signal source: Check whether the source item at the trigger panel complies with the signal channel used.  Check whether it is a " false wave ”: When the signal frequency is very large ( more than half of the sample rate ), it is easy to appear as a "...

  • Page 62: Troubleshooting

    Troubleshooting This chapter contains information and procedures to troubleshoot general hardware failures. Safety Consideration and Cautions Only qualified personnel should perform troubleshooting procedures. Disconnect the power cord whenever possible. DO NOT try to troubleshoot if visible damage is detected on the power supply module and the acquisition board, return it to SIGLENT for further repair.

  • Page 63: Required Equipment

    Required Equipment Table 16 Required Equipment Equipment Critical Specifications Recommended Model Accuracy ± 0.1% SIGLENT SDM3065X or Digital Multi-meter 10 mV resolution Agilent 34401A 200 MHz BW Oscilloscope SIGLENT SDS1204X-E 1 MΩ impedance Troubleshooting Flowchart The following flowchart describes how to troubleshoot the oscilloscope in the most general case. This does not guarantee a 100% recovery of all possible hardware failures.

  • Page 64: To Check The Power Supply Module

    To Check the Power Supply Module  Disconnect all the external cables and devices from the front and back panel.  Disconnect the power cord from the oscilloscope, and wait until the power button light is off.  Remove the rear plastic cover and metal cover following the instructions in the chapter Disassembly Procedures.

  • Page 65: To Check The Acquisition Board

    To Check the Acquisition Board This guide is based on the acquisition board revision C (labeled SDY8.007.278C). Future revisions will be compatible unless described differently. 8.5.1 Acquisition Board Drawing  Most of the test points are located on the top side of the board, it is not necessary to completely remove the board from the chassis to do the troubleshooting unless noted.

  • Page 66: Check The Board-Level Power Supplies

     Power up the acquisition board by pushing the front panel power button.  In most cases, you can hear the relays click if the acquisition board power up successfully. If you cannot hear the click or there is no sign that the acquisition board is powering up, go to To Check the Power Supply Module section to check the standby power and the main power.
  • Page 67 Figure 19 Test points for the Acquisition board power supplies SDS2000X HD Service Manual...
  • Page 68 Figure 20 Test points for the Acquisition board power supplies (continued) Figure 21 Test points for the Acquisition board power supplies (continued) SDS2000X HD Service Manual...
  • Page 69 Figure 22 Test points for the Acquisition board power supplies (continued) Figure 23 Test points for the Acquisition board power supplies (continued) SDS2000X HD Service Manual...

  • Page 70: Check The Clock

    8.5.3 Check the clock There are 3 clock oscillators and associated fanout buffers on board to source different circuits. Each of them serves one or more functions. The voltage compliance of all the clocks under test is LVCMOS33 or LVCMOS25. Table 19 Clock parameters of the Acquisition System Clock Test Point...
  • Page 71 Figure 24 Test points for clock Figure 25 Test points for clock (continued) SDS2000X HD Service Manual...

  • Page 72: To Check The Lcd

    To Check the LCD  Reconnect the power cable to the acquisition board after you have confirmed that the power supply module is in good condition.  Connect the LCD cable to the acquisition board.  Power up the acquisition board by pushing the front panel power button. 8.6.1 To Check the LCD Power Supply Find connector J8 and measure those test points using a multi-meter.
  • Page 73 Figure 27 Test points for LCD signal Table 20 Signal parameters of the LCD Test Point Signal Compliance Description PWM signal to control the J8 PIN7 LCD ON LVCMOS33 brightness of the LCD. Normally HIGH. LCD DATA signal. J8 PIN8/10 Data 0 LVDS Always active.
  • Page 74 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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