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SIGLENT TECHNOLOGIES SDS6000A Series Service Manual

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SDS6000A Series
Digital Oscilloscope
Service Manual
EN01A

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Summary of Contents for SIGLENT TECHNOLOGIES SDS6000A Series

  • Page 1 SDS6000A Series Digital Oscilloscope Service Manual EN01A...

  • Page 3: Table Of Contents

    Contents IMPORTANT SAFETY INFORMATION ....................3 ..........................3 ENERAL AFETY UMMARY .......................... 5 AFETY ERMS AND YMBOLS ..........................6 ORKING NVIRONMENT ..........................7 OOLING EQUIREMENTS ......................8 OWER AND ROUNDING EQUIREMENTS ............................... 9 LEANING ..........................9 BNORMAL ONDITIONS ............................9 AFETY OMPLIANCE FIRST STEPS ............................
  • Page 4 ......................... 43 ERIFY NPUT MPEDANCE DISASSEMBLY PROCEDURES ......................45 ......................45 AFETY ONSIDERATION AND AUTIONS ..............................45 OOLS ISTS .......................... 46 ISASSEMBLY ROCEDURES 6.3.1 To Remove the Handle and Foot ......................46 6.3.2 To Remove the Rear Cover ......................... 47 6.3.3 To Remove the Rear Metal Cover .......................

  • 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 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 the maintenance is confirmed to be successful.

  • Page 7: Safety Terms And Symbols

    The responsible body or operator should refer to the instruction manual to preserve the protection 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.

  • Page 8: 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 9: Cooling Requirements

    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. Installation ( overvoltage ) category II refers to the local power distribution level which applies to equipment connected to the AC line ( AC power ).

  • Page 10: 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% ), 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 11: Cleaning

    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 12 Canadian certification  CAN / CSA-C22.2 No. 61010-1:2012 / A1:2018-11. 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 13: 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 14: Document Conventions

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

  • Page 15: 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 16 Figure 1 Connect the power cord 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 17: Probe Compensation

    4.1.2 Probe Compensation When a passive probe is used for the first time, you should compensate it to match the input channel of the oscilloscope. Non-compensated or poorly compensated probes may increase measurement inaccuracy or error. The probe compensation procedures are as follows: Connect the coaxial cable interface ( BNC connector ) of the passive probe to any channel of the oscilloscope.

  • Page 18: Auto Setup

    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: Interface Test

    Interface Test The SDS6000A 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 20: 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 21: 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 22 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 23: 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 SDS6000A oscilloscope. Enable Channel 1. Perform Analysis > Mask Test to open the Mask Test dialog box, and touch Mask Setup >...
  • Page 24 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 25 Move the waveform on the screen up, down, or sideways so that any portion of it falls outside of the Pass / Fail mask. If the interface is operating normally then a pulse will appear on the second oscilloscope. Adjust the second oscilloscope’s time base and voltage scale as needed. If there is no viewable pulse on the second oscilloscope then there may be a problem with this function.

  • Page 26: 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 27 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 28: To Verify Dc Gain Accuracy

    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. Use the least square method below to fit the DC Gain error: Gain error = LINEST( V error1 error9...
  • Page 29 Set the timebase of the oscilloscope to 5 ms/div, the “ Max Mem Depth ” in the menu of Acquire to 250k, and the impedance of the selected channel to 1 MΩ. Set the vertical scale of the selected channel to 10 V/div, the position to 0 V. Select the Measure menu of the oscilloscope to display the “...
  • Page 30 Applicable DC Gain Vertical Scale DC voltage output levels Impedance Error Limit -3.9375 V, -2.953125 V, -1.96875 V, -0.984375 V, 1MΩ 1.05 V/div ± 1.5% 0 V, 0.984375 V, 1.96875 V, 2.953125 V, 3.9375 V -3.75 V, -2.8125 V, -1.875 V, -0.9375 V, 1MΩ...
  • Page 31 Applicable DC Gain Vertical Scale DC voltage output levels Impedance Error Limit 71.25 mV, 53.4375 mV, 35.625 mV, 1MΩ, 50Ω 19 mV/div 17.8125 mV, 0 mV, 17.8125 mV, ± 1.5% 35.625 mV, 53.4375 mV, 71.25 mV -45 mV, -33.75 mV, 22.5 mV, -11.25 mV, 1MΩ, 50Ω...
  • Page 32 When the vertical scale is within 1 mV to 5 mV, V is calculated to follow setting [ -3, -2.25, -1.5, -0.75, 0, 0.75, 1.5, 2.25, 3 ] * vertical scale. When the vertical scale is more than 5 mV, V is calculated to follow [ -3.75, -2.8125, -1.875, - setting 0.9375, 0, 0.9375, 1.875, 2.8125, 3.75 ] * vertical scale.

  • Page 33: 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 34 Table 6 Instance of Offset Gain Error Calculation Offset Offset Offset Gain setting setting mean error Error Point 1 10.1 Point 2 5.05 0.05 Point 3 Point 4 -5.05 -0.05 Point 5 -10.1 -0.1 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.
  • Page 35 Table 7 Offset Accuracy Gain Full-scale Vertical Offset Component Component Error setting Scale Error Limit Limit 10 V/div -222.4 V, 111.2 V, 0 V, 111.2 V, 222.4 V ± 0.5% ± 0.481 2 V/div -222.4 V, 111.2 V, 0 V, 111.2 V, 222.4 V ±...

  • Page 36: 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 37: 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 38 It is recommended to adjust the timebase to 2 us/div at the first frequency point, and adjust the timebase to 200 ns/div at the remaining frequency points to display a complete non-aliased waveform. Record the “ Stdev ” measurement of the waveform as V and the first frequency point as stdev reference value as V...

  • Page 39: 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 40: 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 41: 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 42: To Verify Trigger Sensitivity

    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. Table 14 Trigger sensitivity data Vertical Scale Frequency Frequency measured ≥...
  • Page 43 Set the impedance of the 9500B to 50 Ω, amplitude to 200 mV, frequency to 10 MHz, and waveform to sine. Set the trigger source of the oscilloscope to EXT, trigger slope to Positive, and impedance of the external trigger channel to 50 Ω. Press the Trigger Level knob to set the level to the center of the waveform.

  • Page 44: 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 45: To Verify Input Impedance

    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 46 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. 44 / 69 SDS6000A Service Manual...

  • Page 47: Disassembly Procedures

    Disassembly Procedures This chapter describes how to remove major parts from the SDS6000A 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 48: Disassembly Procedures

    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. 6.3.1 To Remove the Handle and Foot Figure 11 To remove the handle and foot Steps: Lift the handle and remove the two PM4*8 screws on the rear cover of the handle.

  • Page 49: To Remove The Rear Cover

    6.3.2 To Remove the Rear Cover Figure 12 To remove the rear cover Steps: Remove the six screws ( PWM3*6 ) on the rear cover. Lift the rear cover up and off carefully. SDS6000A Service Manual 47 / 69...

  • Page 50: 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 ten screws ( eight PM3*6 screws and two PWM screws ) from the outside of the rear metal cover.

  • Page 51: 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 52: To Remove The Power Supply Module And Fan

    6.3.5 To Remove the Power Supply Module and Fan Figure 15 To remove the power supply module and fan. Steps: Remove the six 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. 50 / 69 SDS6000A Service Manual...

  • Page 53: 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 six PM3*6 screws. Unplug the side connecting cable from the front panel. Remove the ten screws ( seven PC3*6 and three PWM3*4.5 ) around the front chassis module. Lift the front chassis module slowly and unplug the middle connecting cable from the front panel.

  • Page 54: To Remove The Probe Interface Board And The Mainboard

    6.3.7 To Remove the Probe Interface Board and the Mainboard Steps: Remove the two 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 twelve PM3*6 screws on the mainboard and remove the mainboard.

  • Page 55: 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 56: 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 57  Check whether there are signals generated from the item to be tested.  Check the Trace option of the associated channel is Visible, not Hidden.  Check the acquisition is running and trigger status is Trig’d or Auto.  Check the horizontal time/division setting is reasonable and the acquisition time is short enough for fast display.
  • Page 58 rate is more than 2 times the signal frequency.  Check the trigger type: General signals should use the “ Edge ” trigger and video signals should use the “ Video ” trigger. Only when the proper trigger type is used, can the waveform be displayed stably.

  • Page 59: 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 60: Required Equipment

    Required Equipment Table 16 Required Equipment Equipment Critical Specifications Recommended Model Digital Multi-meter Accuracy ± 0.05% SIGLENT SDM3065X or 1 mV resolution Agilent 34401A Oscilloscope 200 MHz BW 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 61: 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 of the oscilloscope.  Remove the rear plastic cover and metal cover following the instructions in chapter Disassembly Procedures.

  • Page 62: To Check The Acquisition Board

    To Check the Acquisition Board This guide is based on the acquisition board revision C ( labeled SDY8.007.262C ). Future revisions will be compatible unless described differently. 8.5.1 Acquisition Board Drawing Processor FPGA System CPLD Acquisition System Anolog Front End ...

  • Page 63: Check The Board-Level Power Supplies

     Reconnect the power cable to the acquisition board after you have confirmed that the power supply module is in good condition.  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 stand-by power and the main power.
  • Page 64 T2221 MGTAVCC_0.9 0.9V ± 27mV ���� ���� T2220 VCC2V5 2.5V ± 0.1V ���� ���� T2216 ADC1_VCC3V3 3.3V ± 0.165V ���� ���� T2215 ADC1_VCC1V2 1.2V ± 60mV ���� ���� T2218 ADC2_VCC3V3 3.3V ± 0.165V ���� ���� T2217 ADC2_VCC1V2 1.2V ± 60mV ����...

  • Page 65: Check The Clock

    18-T2200 19-T1 22-T2220 23-T2216 24-T2215 21-T2221 25-T2218 26-T2217 21-T2221 Figure 21 Test points for the Acquisition board power supplies ( continued ) 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.
  • Page 66 Figure 22 Test points for clock Figure 23 Test points for clock ( continued ) 64 / 69 SDS6000A Service Manual...

  • Page 67: 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 J1003 and measure those test points using a multi-meter.
  • Page 68 Figure 25 Test points for LCD signal Table 20 Signal parameters of the LCD Test Point Signal Compliance Description PWM signal to control the J1003 PIN7 LCD_ON LVCMOS33 brightness LCD. Normally HIGH. LCD DATA signal. J1003 PIN8/10 LCD_DATA0_N/P LVDS Always active. LCD DATA signal.
  • Page 69 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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