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SIGLENT TECHNOLOGIES SDS6000L Series Service Manual

Low-profile digital oscilloscope
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SDS6000L Series
Low-Profile Digital Oscilloscope
Service Manual
EN01A

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Summary of Contents for SIGLENT TECHNOLOGIES SDS6000L Series

  • Page 1 SDS6000L Series Low-Profile 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 DISASSEMBLY PROCEDURES ......................45 ......................45 AFETY ONSIDERATION AND AUTIONS ..............................45 OOLS ISTS .......................... 46 ISASSEMBLY ROCEDURES 6.3.1 To Remove the Cover ......................... 46 6.3.2 To Remove the Front Panel ........................ 47 6.3.3 To Remove the Crossbar ........................48 6.3.4 To Remove the Slave Board .......................

  • 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. Depending on the type and number of options and accessories (probes, PC port plug-in, etc.), the instrument can consume up to 380 W of power for the 8-channel models and 193 W for the 4-channel models.

  • Page 11: Cleaning

    CAUTION: The outer shells of the front panel terminals (C1, C2, C3, C4, C5, C6, C7, C8, 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 12  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. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part2-030: Particular requirements for testing and measuring circuits. Canadian certification ...

  • 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 with shading is used to represent the clickable menu/button/region on the display. For example, Display represents the "Display" menu on the screen: For the operations that contain multiple steps, the description is in the form of "Step 1 > Step 2 >...". As an example, follow each step in the sequence to enter the upgrade interface: Utility >...

  • 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 CAUTION: To avoid electric shock, make sure that the instrument is correctly grounded to the earth before connecting AC power. Press the Power button on the front panel to start the oscilloscope. After the boot-up the oscilloscope will begin to perform its power-on tests automatically. 14 / 58 SDS6000L Service Manual...

  • Page 17: Probe Compensation

    Probe Compensation 4.1.2 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

    Auto Setup 4.1.3 Perform Acquire > Auto Setup 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 SDS6000L 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

    USB Device Test 4.2.2 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

    LAN Port Test 4.2.3 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

    Pass/Fail out Test 4.2.4 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 SDS6000L oscilloscope. Enable Channel 1. Perform Analysis > Mask Test to open the Mask Test dialog box, and touch Mask Setup >...
  • Page 24 Mask Setting Mask X 0.20 Mask Y 0.20 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 All data points of the waveform must be inside the mask to pass the test.
  • Page 25 Figure 6 Pulse Waveform SDS6000L Service Manual 23 / 58...

  • 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: Self-Calibration

    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 / 58 SDS6000L Service Manual...

  • Page 47: Disassembly Procedures

    Disassembly Procedures This chapter describes how to remove major parts from the SDS6000L 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. To Remove the Cover 6.3.1 Figure 11 To remove the cover Steps: Remove the eleven KM3*6 screws that lock the cover plate, then pull the cover plate back and lift it up.

  • Page 49: To Remove The Front Panel

    To Remove the Front Panel 6.3.2 Figure 12 To remove the front panel Steps: Remove the ten KM3*6 screws and pull the front panel forward In this case, the front panel is still connected to the machine. Do not leave the front panel too far apart.

  • Page 50: To Remove The Crossbar

    To Remove the Crossbar 6.3.3 Figure 13 To remove the crossbar Steps: Remove the two KM3 * 6 screws on the sides of the crossbar, and then remove four PM3 * 6 screws on the crossbar and remove the crossbar. 48 / 58 SDS6000L Service Manual...

  • Page 51: To Remove The Slave Board

    To Remove the Slave Board 6.3.4 Figure 14 To remove the slave board Steps: Unplug the connecting cables from the slave board. Remove the thirteen PM3*6 screws on the slave board, lift and pull the slave board diagonally upwards away from the BNC connector side. Remove the five KM3*6 screws from the base, then remove the two PM3*6 screws that secure the feet of the bracket.

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

    To Remove the Power Supply Module and Fan Module 6.3.5 Figure 15 To remove the power supply module and fan module Steps: Unplug the connection cables on the fan module and power supply module. Remove the eight KM3*32 screws from the fan module, then remove the two PM3*6 screws on the fan bracket and remove the fan module.

  • Page 53: To Remove The Aib Board、Io Board And Awg Board

    To Remove the AIB board、IO board and AWG board 6.3.6 Figure 16 To remove the three board Steps: Remove the five nuts from BNC connectors. Take away the three BNC cables that on the right side. Remove the four PM3*6 screws on the AIB board and remove the AIB board. Remove the five PM3*6 screws on the IO board and remove the IO board.

  • Page 54: To Remove The Mainboard

    To Remove the Mainboard 6.3.7 Figure 17 To remove the mainboard Steps: Remove the fifteen screws (thirteen PM3*6 screws and two PM3*10 screws) on the mainboard and remove the mainboard. 52 / 58 SDS6000L Service Manual...

  • Page 55: 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 56  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 57 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 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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