SIGLENT SHS800X Service Manual
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SIGLENT SHS800X Service Manual

SIGLENT SHS800X Service Manual

Handheld digital oscilloscope
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SHS800X / SHS1000X
Handheld Digital Oscilloscope
Service Manual
EN01A

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Summary of Contents for SIGLENT SHS800X

  • Page 1 SHS800X / SHS1000X Handheld Digital Oscilloscope Service Manual EN01A...

  • Page 3: Table Of Contents

    SHS800X/SHS1000X Series Service Manual Contents Important Safety Information .................... 1 1.1. General Safety Summary ........................1 1.2. Safety Terms and Symbols ........................3 First Steps ........................... 4 2.1. Delivery Checklist ..........................4 2.2. Quality Assurance ..........................4 2.3. Maintenance Agreement ........................4 Document Conventions .....................
  • Page 4 SHS800X/SHS1000X Series Service Manual 6.3.1. To Remove the Battery Cover and Battery ................... 30 6.3.2. To Remove the Rear Cover ......................30 6.3.3. To Remove the Power PCBA ......................31 6.3.4. To Remove the Main PCBA Cover and DMM PCBA ..............31 6.3.5.

  • Page 5: Important Safety Information

    SHS800X/SHS1000X Series Service Manual 1 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. 1.1 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 SHS800X/SHS1000X Series Service Manual information is still in place, do not use it for testing. Contact the manufacturer or the maintenance department designated by the manufacturer to carry out maintenance to avoid the wrong test data caused by the use of the fault or endanger the personal safety.

  • Page 7: Safety Terms And Symbols

    SHS800X/SHS1000X Series Service Manual 1.2 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 8: First Steps

    SIGLENT shall not be responsible for any defect, damage, or failure caused by any of the following: Attempted repairs or installations by personnel other than SIGLENT.

  • Page 9: Document Conventions

    SHS800X/SHS1000X Series Service Manual 3 Document Conventions For convenience, text surrounded by a box border is used to represent the button of the front panel. For example, Acquire represents the "Acquire" button on the front panel. int.siglent.com...

  • Page 10: Prepare For Using

    SHS800X/SHS1000X Series Service Manual 4 Prepare for Using 4.1 Adjust the Supporting Leg Properly adjust the supporting leg and place the oscilloscope steadily for better operation and observation of the display screen. Figure 1 Adjust the Supporting Leg 4.2 Battery Installation When the oscilloscope leaves the factory, the battery and the host are separated.

  • Page 11: Connect The Power Supply

    SHS800X/SHS1000X Series Service Manual Important tips:  Pay attention to the direction of the battery cover, with the serial number at the bottom.  Anti-reverse connection design is adopted for battery slot. Please put the battery in gently, do not use force.

  • Page 12: Function Inspection

    SHS800X/SHS1000X Series Service Manual 4.6 Function Inspection Press the Default button on the front panel to restore the instrument to its default configuration. Connect the ground alligator clip of the probe to the “Ground Terminal” under the probe compensation signal output terminal.

  • Page 13: Probe Compensation

    “Perfectly compensated” in the figure above. 4.8 Multimeter Meter Pen To avoid obtaining no measurements or unnecessary damage to the SHS800X/SHS1000X, you should use the right jack when measuring current, voltage and other measurement.

  • Page 14: Performance Test

    SHS800X/SHS1000X Series Service Manual 5 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 30 minutes before testing. Below is the required equipment for the test:...
  • Page 15 SHS800X/SHS1000X Series Service Manual Note: “CH” in Figure 8 represents one channel of the 9500B with a 9530 active head and a terminal load 50 Ω; They connect to any channel of the scope according to test. CH1 CH2 Figure 9 Connecting test instruments for Skew Note: “CH1”...

  • Page 16: To Verify Dc Gain Accuracy

    SHS800X/SHS1000X Series Service Manual Note: “CH” and “END” in Figure 11 of the 5522A represents the current output of 5522A with a dual banana cable, connect to SCD600mA (10A) option that installed on the input of scope meter according to test.
  • Page 17 SHS800X/SHS1000X Series Service Manual 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 timebase of the oscilloscope to 5 ms/div, set the “Mem Depth” in the menu of Acquire to 600k.

  • Page 18: To Verify Offset Accuracy

    SHS800X/SHS1000X Series Service Manual Vertical Scale DC voltage output levels DC Gain Accuracy error 20 mV/div 60 mV, 30 mV, 0 V, -30 mV, -60 mV ± 2% 10 mV/div 30 mV, 15 mV, 0 V, -15 mV, -30 mV ±...
  • Page 19 SHS800X/SHS1000X Series Service Manual Table 5 Instance of Offset Gain Error Calculation Offset Offset Offset Gain error setting setting mean error Point1 10.1 -0.1 Point2 5.05 -0.05 Point3 Point4 -5.05 0.05 Point5 -10.1 Steps: Set the 9500B output to on.

  • Page 20: To Verify Dc Measurement Accuracy

    SHS800X/SHS1000X Series Service Manual Table 6 Offset Accuracy Vertical Scale Offset Slope error Zero input (V) setting 50 V/div -210 V, 105 V, 0 V, 105 V, 210 V ±1.5% ±6.005 20 V/div -210 V, 105 V, 0 V, 105 V, 210 V ±1.5%...

  • Page 21: To Verify Time Base Accuracy

    SHS800X/SHS1000X Series Service Manual Notes: “V ” represents DC voltage output by the 9500B. setting “Offset ” represents the offset value setting on scope. setting “V ” represents the measurement value on scope. mean “Limit” represents max allowance error for the measurement results.

  • Page 22: To Verify Trigger Level

    SHS800X/SHS1000X Series Service Manual 5.5 To Verify Trigger Level This test checks the trigger level accuracy of the analog channels. CH Trigger Level Error Limit: abs (Error) ≤ 20mV Steps: Connect selected channel of the oscilloscope to the 9500B as shown in Figure 7.

  • Page 23: To Verify Trigger Sensitivity

    SHS800X/SHS1000X Series Service Manual 5.6 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 9 Trigger sensitivity data...

  • Page 24: To Verify Bandwidth

    SHS800X/SHS1000X Series Service Manual 5.7 To Verify Bandwidth This test checks the bandwidth of all 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...

  • Page 25: To Verify Bandwidth Limit

    SHS800X/SHS1000X Series Service Manual After the test, calculate the dB value (regarding the amplitude at 50 kHz as 0 dB) at every frequency point. Check if the value is in the limited range in Table 12. The method below to calculate dB value: Vstdev dB vaule = 20 ∗...

  • Page 26: To Verify Channel Skew

    SHS800X/SHS1000X Series Service Manual to the frequency in Table 13. Table 13 Frequency points in the test Frequency Point (Hz) 0.05M, 10M, 18M, 20M, 22M, 30M It is recommended to adjust the timebase to 20 us/div at first frequency point, and adjust the timebase to 500 ns/div at the remaining frequency points to display a complete non- aliasing waveform.

  • Page 27: To Verify Input Impedance

    SHS800X/SHS1000X Series Service Manual select Skew function. Set impedance of the 9500B to 50 Ω, frequency to 1 kHz, and amplitude to 0.6 V. Set vertical scale of the selected channels to 100 mV/div. Set the oscilloscope timebase to 2 ns/div, trigger source is the selected channel.

  • Page 28: To Verify Meter Dcv

    SHS800X/SHS1000X Series Service Manual to DC, Record the reading displays on the screen of the 9500B. 11. Check if the capacitance is within the specified range in Table 15. 12. Test at 10 V/div and 500mV/div, using the same procedure as steps 8 to 10.

  • Page 29: To Verify Meter Acv

    SHS800X/SHS1000X Series Service Manual 5.12 To Verify Meter ACV This test checks the AC voltage(45Hz~400Hz) precision of the meter mode with different range. Table 18 The ranges of ACV should be verified Range Precision limit 60mV, ± 1%± 15digit 600mV, 6V, 60V, 600V ±...

  • Page 30: To Verify Meter Res

    SHS800X/SHS1000X Series Service Manual 5.13 To Verify Meter RES This test checks the resistance precision of the meter mode with different range. Table 20 The ranges of resistance should be verified Range Precision limit 600Ω, 6kΩ, 60kΩ, 600kΩ, 6MΩ ± 1%± 5digit 60MΩ...

  • Page 31: To Verify Meter Dci

    SHS800X/SHS1000X Series Service Manual Steps: Connect the meter input to the capacitance output of the 5522A, as shown in Figure 10. Switch to the Meter mode of the oscilloscope. Set the Meter to “Cap.” and Range “40nF”. Set the resistance of the 5522A in Table 23 and set the appropriate Mode and Range for each CAP .

  • Page 32: To Verify Meter Aci

    SHS800X/SHS1000X Series Service Manual limit in Table 24. The method below to calculate the precision: ������������������−�������������������� Precision = 100 * �������������������� Table 25 DCI of the 5522A setting 25mA, 50mA, 250mA, 500mA, 2.5A, 5A, 4A, 8A setting 5.16 To Verify Meter ACI This test checks the AC current (45Hz~400Hz) precision of the meter mode with different range.

  • Page 33: Disassembly Procedures

    25mA, 50mA, 250mA, 500mA, 2.5A, 5A, 4A, 8A setting 6 Disassembly Procedures This chapter describes how to remove major parts from the SHS800X/SHS1000X series oscilloscope. 6.1 Safety Consideration and Cautions Only qualified personnel should perform the disassembly procedures. Disconnect the power before you begin to remove or replace the parts.

  • Page 34: Disassembly Procedures

    SHS800X/SHS1000X Series Service Manual 6.3 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 Battery Cover and Battery...

  • Page 35: To Remove The Power Pcba

    SHS800X/SHS1000X Series Service Manual Steps: Force on the one side of the back frame and pull the rotation axis out of the hole, then remove the back frame. Remove the six PM3*8 screws on the rear cover, lift the rear cover and unplug the connecting cable.

  • Page 36: To Remove The Main Pcba

    SHS800X/SHS1000X Series Service Manual Steps: Remove the six PM3*6 screws around the main PCBA cover and remove the main PCBA cover. Remove the insulating sheet above the DMM PCBA. Remove the four PC3*8 screws on the DMM PCBA and remove the DMM PCBA.

  • Page 37: To Remove Key Pcba And Keyboard

    SHS800X/SHS1000X Series Service Manual 6.3.6 To Remove Key PCBA and Keyboard Figure 17 To remove the key PCBA and keyboard Steps: Remove the four PC3*6 screws on the key PCBA and remove the key PCBA. Remove the keyboard and knob.

  • Page 38: Solving General Problems

     Restart the instrument after finishing the above inspections.  If it still does not work correctly, please contact SIGLENT. The signal is sampled but no waveform of the signal is displayed:  Check whether the probe is correctly connected to the signal connecting wire.
  • Page 39  If the USB storage device still cannot be used normally, please contact SIGLENT. The multimeter measurements aren’t correct: Check that if the range of the SHS800X/SHS1000X matches with the measured item.   Make sure that if the multimeter is beyond the calibration date. If the measurements and real values are beyond the relevant precision, please contact the calibration site warranted by the SIGLENT company to calibrate the SHS800X/SHS1000X.

  • Page 40: Troubleshooting

    Only qualified personnel should perform troubleshooting procedures. Disconnect the power adapter and battery whenever possible. DO NOT try to troubleshoot if visible damage is detected on the power adapter and battery, return it to SIGLENT for further repair. HAZARDOUS VOLTAGES...

  • Page 41: Required Equipment

    1 MΩ impedance 8.3 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. Contact SIGLENT if you cannot solve the problem. Begin...

  • Page 42: To Check The Power Supply Module

    SHS800X/SHS1000X Series Service Manual 8.4 To Check the Power Supply Module  Disconnect all the external cables and devices from the front and back panel.  Disconnect the power adapter of the oscilloscope.  Remove the rear plastic cover and metal cover following the instructions in chapter Disassembly Procedures.
  • Page 43 R258 PIN1 9.3V ~10V 11.4V ~12.6V Adapter power supply MOS transistor output Figure 20 Pin definition of the power adapter input (SHS800X) Adapter power supply MOS transistor output Figure 21 Pin definition of the power adapter input (SHS1000X) int.siglent.com...

  • Page 44: To Check The Main Board

    SHS800X/SHS1000X Series Service Manual 8.5 To Check the Main Board This guide is based on the main board "SHS800X" revision D (labeled SDY8.007.241D) and "SHS1000X" revision C (labeled SDY8.007.304C). Future revisions will be compatible unless described differently. 8.5.1 Main Board Drawing Figure 22 Analog Front End of SHS800X int.siglent.com...
  • Page 45 SHS800X/SHS1000X Series Service Manual Figure 23 Acquisition And Processor System of SHS800X Figure 24 Analog Front End of SHS1000X Figure 25 Acquisition And Processor System of SHS1000X 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 noticed.

  • Page 46: Check The Board-Level Power Supplies

    If the power or the signal under test is abnormal, replace the main board. 8.5.2 Check the Board-Level Power Supplies Check the board-level power supplies of SHS800X and SHS1000X. Find and measure those test points using a multi-meter. Table 31 Voltage parameters of the board level power supplies of SHS800X...
  • Page 47 C368 PIN1 DDR_VREF 0.75V ± 25mV C369 PIN1 DDR_VTT 0.75V ± 25mV TP19/C423 PIN2 USB_VBUS ± 0.2V LCD_VLEDP 8.4V 9.3V 10.5V C369 C368 TP11 C423 TP17 TP20 TP21 Figure 26 Test points for the main board power supplies of SHS800X int.siglent.com...
  • Page 48 SHS800X/SHS1000X Series Service Manual CB61 TPB2 TPA2 CA61 R442 R441 TP10 Figure 27 Test points for the main board power supplies of SHS800X (continued) TP12 Figure 28 Test points for the main board power supplies of SHS800X (continued) int.siglent.com...
  • Page 49 SHS800X/SHS1000X Series Service Manual Table 32 Voltage parameters of the board level power supplies of SHS1000X Number Test Points Net Name Specification TP16/L48 PIN2 VCC3V3 3.3V ± 0.1V TP13/L42 PIN2 VCC1V ± 0.1V TP15/L46 PIN2 VCC1V5 1.5V ± 0.1V TP14/L44 PIN2 VCC1V8 1.8V...
  • Page 50 SHS800X/SHS1000X Series Service Manual TPB3/CB134 PIN1 AVEE-4V5_CH2 -4.5V ± 0.2V LA12 PIN2 AVCC4V_CH1 ± 0.2V LB12 PIN2 AVCC4V_CH2 ± 0.2V C168 PIN1 DDR_VREF_0 0.75V ± 25mV C232 PIN1 DDR_VREF_1 0.75V ± 25mV TP19/C423 PIN2 USB_VBUS ± 0.2V LCD_VLEDP 8.4V 9.3V 10.5V...
  • Page 51 SHS800X/SHS1000X Series Service Manual LB12 TPB2 TPA2 LA12 CB134 CA134 CB113 CA113 R442 R441 R441 TP10 Figure 30 Test points for the main board power supplies of SHS1000X (continued) TP12 Figure 31 Test points for the main board power supplies of SHS1000X (continued)

  • Page 52: Check The Clock

    SHS800X/SHS1000X Series Service Manual 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 LVCMOS18.

  • Page 53: To Check The Lcd

    SHS800X/SHS1000X Series Service Manual 8.6 To Check the LCD  Reconnect the power cable to the main board after you have confirmed that the power supply module is in good condition.  Connect the LCD cable to the main board.
  • Page 54 SHS800X/SHS1000X Series Service Manual LCD_DATA RESET LCD_VLEDP LCD_VCOM LCD_DCLK Figure 35 Test points for LCD signal Table 34 Signal parameters of the LCD Test Point Signal Description J12 PIN49/50 LCD_VLEDP Power for LED backlight anode, typically 9.3V J12 PIN45 LCD_VCOM...
  • Page 55 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 in electronic test & measurement. Headquarters: SIGLENT Technologies Co., Ltd...

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