SIGLENT TECHNOLOGIES SDS2000X HD Series, Service Manual

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

Page 2: ......

Page 3: ...INFORMATION 14 4 1 FUNCTIONAL CHECK 14 4 1 1 Power on Inspection 14 4 1 2 Probe Compensation 15 4 1 3 Auto Setup 16 4 1 4 Self Calibration 16 4 2 INTERFACE TEST 18 4 2 1 USB Host Test 18 4 2 2 USB De...

Page 4: ...6 To Remove Front Panel 54 6 3 7 To Remove the Probe interface board and Mainboard 55 6 3 8 To Remove the Rubber Keypad and Keyboard 56 7 SOLVING GENERAL PROBLEMS 57 8 TROUBLESHOOTING 60 8 1 SAFETY C...

Page 5: ...t to mains power sources Ground the Instrument The instrument grounds through the protective terra conductor of the power line To avoid electric shock the ground conductor must be connected to the ear...

Page 6: ...nterface 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 a...

Page 7: ...e range describe in the manual The maximum additional transient voltage cannot exceed 1300 V The responsible body or operator should refer to the instruction manual to preserve the protection afforded...

Page 8: ...pressed the oscilloscope s state switches between Operation and Standby This switch does not disconnect the device s power supply To completely power off the oscilloscope the power cord must be unplu...

Page 9: ...Direct sunlight electric heaters and other heat sources should be considered when evaluating the ambient temperature Warning Do not operate the instrument in explosive dusty or humid environments Ambi...

Page 10: ...nvironments of Pollution Degree II Note Degree of Pollution II refers to a working environment that is dry and non conductive pollution occurs Occasional temporary conductivity caused by condensation...

Page 11: ...voltage and safety ground connection The AC inlet ground terminal is connected directly to the frame of the instrument For adequate protection against electrical shock hazards the power cord plug mus...

Page 12: ...serviceable parts inside Do not remove covers Refer servicing to qualified personnel 1 7 Abnormal Conditions Do not operate the oscilloscope if there is any visible sign of damage or has been subject...

Page 13: ...2018 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part2 030 Particular requirements for testing and measuring circuits Canadian certification CAN CSA C22 2 N...

Page 14: ...t be responsible for any defect damage or failure caused by any of the following a Attempted repairs or installations by personnel other than SIGLENT b Connection to incompatible devices incorrect con...

Page 15: ...able menu button region on the touch screen 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...

Page 16: ...e the self calibration routine How to recall factory default settings For more detailed information about oscilloscope operation please refer to the User Manual 4 1 Functional Check The functional che...

Page 17: ...ive 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 T...

Page 18: ...als 20 Hz If Auto Setup cannot achieve desired settings you can manually adjust the vertical horizontal and trigger systems Select the channel with the lowest frequency when several channels are conne...

Page 19: ...e Manual 17 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...

Page 20: ...ing properly it is recommended that the user first test the interfaces 4 2 1 USB Host Test To test whether the USB Host interface is operating correctly Tools A U disk FAT32 format recommended Steps 1...

Page 21: ...re on a computer and install the driver step by step following the instructions 2 Connect the oscilloscope to the computer using a USB cable 3 Run NI MAX software Click Device and Interface at the upp...

Page 22: ...er with a LAN interface A standard LAN cable National Instruments NI MAX software Steps 1 Set up the National Instruments Measurement and Automaton Explorer NI MAX software on a computer and install t...

Page 23: ...Run NI MAX software Click Device and Interface at the upper left corner of the NI software interface and select the LAN device symbol 5 Click Open VISA Test Panel option button which then displays the...

Page 24: ...signal output by viewing on another oscilloscope Tools A second oscilloscope Two BNC cables Steps 1 Turn on the SDS2000X HD oscilloscope 2 Enable Channel 1 3 Perform Analysis Mask Test to open the Mas...

Page 25: ...rce CH1 Type All in Display Info On Mask Setting Mask X Mask Y 0 32 0 32 Note Press Create Mask to complete Mask setting after mask x setting and mask y setting After selecting the corresponding items...

Page 26: ...inal of another oscilloscope 2 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 wil...

Page 27: ...ipment Description Qty Test item Fluke 9500B 3 2 GHz High Performance Oscilloscope Calibrator 1 DCG accuracy Offset accuracy DC measurement accuracy Timebase accuracy Trigger level Trigger sensitivity...

Page 28: ...d Rear panel of DUT Figure 9 Test setup for Ext trigger level Note The 9530 active heads in Figure 9 are connected to any two channels of the 9500B The BNC connector of one active head is connected to...

Page 29: ...CEL that uses the least squares method to calculate a line that best fits your dataset It creates a two dimensional array by using the least square method and then returns an array describing the line...

Page 30: ...function Check if the slope falls within the range shown in Table 4 8 Set the next vertical scale of the selected channel to the other settings in Table 4 and repeat step 4 to step 7 9 After measurin...

Page 31: ...8 015625 V 10 6875 V 0 6 2 25 V div 1M 8 4375 V 6 328125 V 4 21875 V 2 109375 V 0 V 2 109375 V 4 21875 V 6 328125 V 8 4375 V 0 6 1 8 V div 1M 6 75 V 5 0625 V 3 375 V 1 6875 V 0 V 1 6875 V 3 375 V 5 06...

Page 32: ...8 75 mV 825 mV 0 6 172 mV div 1M 645 mV 483 75 mV 322 5 mV 161 25 mV 0 mV 161 25 mV 322 5 mV 483 75 mV 645 mV 0 6 138 mV div 1M 517 5 mV 388 125 mV 258 75 mV 129 375 mV 0 mV 129 375 mV 258 75 mV 388 1...

Page 33: ...1 875 mV 82 5 mV 0 6 17 2 mV div 1M 64 5 mV 48 375 mV 32 25 mV 16 125 mV 0 mV 16 125 mV 32 25 mV 48 375 mV 64 5 mV 0 6 13 8 mV div 1M 51 75 mV 38 8125 mV 25 875 mV 12 9375 mV 0 mV 12 9375 mV 25 875 mV...

Page 34: ...mV 1 5 Vsetting in Table 4 is calculated in the following ways When the vertical scale is 1 mV div Vsetting is calculated to follow 3 2 25 1 5 0 888 0 0 888 1 5 2 25 3 1 mV When the vertical scale is...

Page 35: ...lculate the offset accuracy Offset accuracy 0 5 0 V 0 5 200mV 8 1 mV 9 mV To calculate the offset gain error of a vertical scale i e Gain component at least five input and reading values are required...

Page 36: ...cted channel 5 According to Table 7 set offset of the channel to Offsetsetting and set the 9500B output level to Vsetting Offsetsetting then record the Mean value of the oscilloscope as Vmean 6 Calcul...

Page 37: ...nt 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 0 5 0 021 200 mV div 80 V 40 V 0 V 40 V 80 V 0 5 0 009 50 mV div 16 V 8 V 0 V 8 V 16 V 0 5 0 003 20...

Page 38: ...ng Offsetsetting Offset accuracy Where Vsetting represents DC voltage output by the 9500B Offsetsetting represents the offset value setting on an oscilloscope Table 9 Instance of DC Measurement Limiti...

Page 39: ...the selected channel 4 Set the 9500B impedance to 50 amplitude to 60 mV waveform to sine 5 Set frequency of the 9500B to the frequency in Table 11 Table 11 Frequency points in the test Model Impedance...

Page 40: ...M 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 6 It is recommended to adjust the timebase to 1 us div 7 Record the Stdev measurement of the w...

Page 41: ...0 8 dB 334M 1 2 1 0 dB 501M 3 0 1 0 dB 750M 65 2 0 dB SDS2354X HD 50 36M 0 5 0 5 dB 118M 0 8 0 8 dB 236M 1 2 1 0 dB 351M 3 0 1 0 dB 500M 5 5 3 0 dB SDS2204X HD 50 21M 0 5 0 5 dB 68M 0 8 0 8 dB 136M 1...

Page 42: ...this limit Refer to the datasheet for the aging spec Steps 1 Connect the selected channel of the oscilloscope to the 9500B as shown in Figure 7 2 Set the oscilloscope vertical scale to 100 mV div 3 S...

Page 43: ...pe to 50 us div 4 Set the impedance of the selected channel vertical scale to 100 mV div trigger source to the selected channel trigger slope to positive and coupling mode to DC 5 Set the trigger leve...

Page 44: ...upling mode to DC 4 Set the impedance of the 9500B to 1 M frequency to 1 kHz amplitude to 8 vertical scale and waveform to sine 5 Set the trigger level to 450 mV 6 Set the Measure menu of the oscillos...

Page 45: ...iv and coupling mode to AC and impedance to 50 3 Set the impedance of the 9500B to 50 frequency to 10 MHz waveform to sine and output to 50 mV which is measured by the oscilloscope 4 Set trigger slope...

Page 46: ...cy measured in Table 14 6 Set trigger slope to Negative repeat steps 4 to 5 7 Set frequency of the 9500B to the 300 MHz bandwidth frequency of the external trigger and amplitude to 500 mV Repeat steps...

Page 47: ...PE CALIBRATOR panel of the 9500B and select the Skew function 3 Set the impedance of the 9500B to 50 frequency to 1 kHz and amplitude to 0 6 V 4 Set vertical scale of the selected channels to 100 mV d...

Page 48: ...M and coupling mode to AC 3 Press the Aux key at the right of the OSCILLOSCOPE CALIBRATOR panel of the 9500B and select the Load Resistance Measurement Function Record the reading displays on the scr...

Page 49: ...0 12 Check the other analog channels in the same way as steps 8 to 11 13 Disconnect the test connection When checking the EXT trigger channel it is the same as checking analog channels Record the read...

Page 50: ...with the power cord disconnected whenever possible WARNING AVOID ELECTRICAL SHOCK Hazardous voltages exist on the power supply and LCD modules To avoid electrical shock disconnect the power cord and w...

Page 51: ...ntistatic gloves Custom screw hexagonal nut tool or long nose pliers 6 3 Disassembly Procedures This section describes how to remove the modules in the oscilloscope in detail To install the removed pa...

Page 52: ...push the two part of handle to different direction to remove the handle 2 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...

Page 53: ...1 6 3 3 To Remove the Rear Metal Cover Figure 13 To remove the rear metal cover Steps 1 Remove the BNC nut on the rear metal cover 2 Remove the eight screws from the outside of the rear metal cover 3...

Page 54: ...is Module Figure 14 To remove the back panel chassis module Steps 1 Remove the eight PM3 6 screws outside the back panel chassis 2 Lift the back panel chassis module slowly and unplug the connecting c...

Page 55: ...board Figure 15 To remove the power supply module and fan Steps 1 Remove the four PM3 6 screws on the power supply and remove the power supply 2 Remove the four PB5 30 screws bottom of the fan and rem...

Page 56: ...e the channel overlay sticker from the front panel and remove the four PM3 6 screws 2 Unplug the side connecting cable from the front panel 3 Remove the seven screws around the front chassis module 4...

Page 57: ...nd Mainboard Steps 1 Remove the one PM3 6 screws on the probe interface board unplug the connecting cable and remove the probe interface board 2 Remove the four nuts from the front BNC connectors 3 Re...

Page 58: ...the knob with pliers protected by a soft cloth to prevent scratches if necessary and pull it away from the front panel 2 Remove the six PC3 6 screws on the keyboard 3 Remove the keyboard 4 Remove the...

Page 59: ...f it still does not work correctly please contact SIGLENT 2 The screen displays only the logo The instrument is frozen or unresponsive Remove all the USB devices plugged into the oscilloscope and powe...

Page 60: ...contact SIGLENT for further instructions 4 The baseline trace drifts out of specification Check that the fan is running Check that the vertical position setting is working Perform self calibration fol...

Page 61: ...GER Set to Normal or Single and ensure that the trigger level is set near the middle of the expected waveform amplitude or set the mode to Auto Note Using Auto Setup can automatically finish the above...

Page 62: ...pply and LCD modules To avoid electrical shock disconnect the power cord and wait at least three minutes for the capacitors to discharge before you begin disassembly CAUTION ESD CAUTION Electrostatic...

Page 63: ...BW 1 M impedance SIGLENT SDS1204X E 8 3 Troubleshooting Flowchart The following flowchart describes how to troubleshoot the oscilloscope in the most general case This does not guarantee a 100 recover...

Page 64: ...side power supply cable from the power supply module labeled CN2 Reconnect the power cord to the receptacle of the power supply module Be cautious when working near the power supply module without th...

Page 65: ...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 It is recommended to re assemble the po...

Page 66: ...and measure those test points using a multi meter Table 18 Voltage parameters of the board level power supplies Number Test Points Net Name Specification 1 TP10 VCC12V6_A 12 2 12 8 Vdc 2 TP11 VCC12V6...

Page 67: ...SDS2000X HD Service Manual 65 Figure 19 Test points for the Acquisition board power supplies...

Page 68: ...66 SDS2000X HD Service Manual Figure 20 Test points for the Acquisition board power supplies continued Figure 21 Test points for the Acquisition board power supplies continued...

Page 69: ...SDS2000X HD Service Manual 67 Figure 22 Test points for the Acquisition board power supplies continued Figure 23 Test points for the Acquisition board power supplies continued...

Page 70: ...sition Clock Generator R772 LVCMOS33 Lock detection for the clock generator NOT a clock Active high TP105 LVCMOS25 Reference Clock for the ACQ FPGA 33 3333 MHz 25 ppm TP95 LVCMOS33 Reference Clock for...

Page 71: ...SDS2000X HD Service Manual 69 Figure 24 Test points for clock Figure 25 Test points for clock continued...

Page 72: ...points for the LCD power supplies These power rails are shared with the power supply network described in the Check the board level power supplies section If they are within specification without the...

Page 73: ...IGH J8 PIN8 10 Data 0 LVDS LCD DATA signal Always active J8 PIN11 13 Data 1 LVDS LCD DATA signal Always active J8 PIN16 18 Data 2 LVDS LCD DATA signal Always active J8 PIN19 21 Clock LVDS LCD referenc...

Page 74: ...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 Hea...