Service Manual - SIGLENT Technologies America
Contents
1. No Module Name Specification 1 On Off button 2 Back Rind 3 Big knobs 4 Small knobs 5 Bolts PM2 5 10 6 Bolts PA3 8 7 Bolts PA3 10 8 Back cover board 9 Bolts KM3 8 10 Top cover board 11 Bolts KM3 30 12 Fan 13 Bolts BM3 8 14 Bolts PA3 8 15 Metal shelf 16 Silica gel key 17 Bolts BM3 8 18 Main board 19 BNC nuts 20 LCD 21 Bolts KM3 8 22 Keyboard 23 Front panel All the replaceable parts above are available through contacting your local SIGLENT office or representative For more information about the module exchange please refer to Contact SIGLENT 52 SDS1000CML CNL DL Service Manual SIGLENT Contact SIGLENT SIGLENT TECHNOLOGIES CO LTD Address 3 F building NO 4 Antongda Industrial Zone 3rd Liuxian Road Bao an District Shenzhen P R China Tel 0086 755 3661 5186 E mail sales siglent com http www siglent com SDS1000CML CNL DL Service Manual 532. Rear metal cover Figure 5 3 Removing the rear metal cover Removing steps 1 Place the oscilloscope face down on a soft surface such as an anti static mat 2 Remove the two screws located around the RS 232 interface 3 Since the edge of the rear metal cover is sharp you should lift the rear metal cover up and off carefully to avoid scratching your hand To install the rear metal cover please operate as the reverse steps 32 SDS1000CML CNL DL Service Manual SIGLENT Removing the Top Metal Cover Top metal cover screw Top metal cover Figure 5 4 Removing the top metal cover Removing steps 1 Place the oscilloscope bottom down on a soft surface such as an anti static mat 2 Remove the two screws located on the top metal cover 3 Since the edge of the top metal cover is sharp you should lift the top metal cover up and off carefully to avoid scratching your hand To install the top metal cover please operate as the reverse steps SDS1000CML CNL DL Service Manual 33 SIGLENT Removing the Power Supply Module Power supply module screw a Sus DX Power supply module Figure 5 5 Removing the power supply module Removing steps 1 Place the oscilloscope face down on a soft surface such as an anti static mat 2 Disconnect the backlight inverter cable connected to display module the power cable connected to main board module and the ground wire connected to the metal shelf close to it
3. Page 13 M 250ps M Pos 0 600 Figure 2 5 Insert U disk 3 Press Save Recall button to display Save Recall menu then select File at the second option Save To and select Save to enter file save recall interface 12 SDS1000CML CNL DL Service Manual SIGLENT SAVE ALL Modify Del Folder Page 12 Figure 2 6 File save interface 4 Remove the U disc and quickly a prompt message USB Flash Drive Plug Out appears SDS1000CML CNL DL Service Manual 13 SIGLENT USB Device Test To test if the USB Device interface works normally connected with EasyScope software Tools e ASDS1000CML CNL DL oscilloscope e Acomputer with USB interface e Astandard USB cable Type AB e EasyScopeX software for SDS1000CML CNL DL Steps 1 Set up EasyScopeX software in a computer and Install the driver step by step following the instructions 2 Connect the oscilloscope and the computer using an USB cable then select USBTMC in Back USB menu under the UTILITY menu 3 Run EasyScopeX Click Add Device at the upper left corner of the EasyScope interface and immediately displays the USBTMCDeviceDLG interface then click the Add on the interface to complete the connection FE USBIECDeviceDLG The connected devices are list below 14 SDS1000CML CNL DL Service Manual SIGLENT RS 232 Test To test if the RS 232 interface works normally through Super Terminal
4. gt 100mV div Rise Time lt 14nS SDS1022DL lt 7 0nS SDS1052DL lt 5 0nS SDS1072CML SDS1072CNL lt 3 5nS SDS1102CML SDS1102CNL SDS1102DL lt 2 3nS SDS1152CML lt 1 8nS SDS1202DL Math Operation FFT FFT Window mode Hanning Hamming Blackman Rectangle Sampling points 1024 Bandwidth Limit 20MHz Horizontal System Real Time Sampling Rate CML CNL 1GSa s for single channel 500MSa s for double channels DL 500MSa s for single 500MSa s for double channels Equivalent Sampling Rate 50GSa s Sec Div Range 2 5nS div 50S div Scan Range 100mS div 50S div in 1 2 5 5 sequence Time base Accuracy 50ppm in range of over 1ms time interval Measure System Voltage Vpp Vmax Vmin Vamp Vtop Vbase Vavg Mean Vrms Crms FOV FPRE ROV RPRE Automatic Time Period Frep Wid Wid Rise Time Fall Time Measurement Bwid Dut Dut Phase FRR FRF FFR FFF LRR LRF LFR Delay LEF Trigger System Trigger Types Edge Pulse Video Slope Alternative Trigger Source CH1 CH2 EXT EXT 5 AC Line Trigger Modes Auto Normal Single Trigger Coupling DC allow to pass the whole signal AC prevent DC part of the whole signal and attenuate signal that lower than 50Hz SDS1000CML CNL DL Service Manual 3 SIGLENT HF REJ attenuate signal that higher t
5. Reading the following information can help you quickly handle some easy hardware failures with more convenience Table 6 3 Troubleshooting general failures General hardware failures Method to deal with No start up after pressing the ON OFF button Check if the power cord is correctly connected if the ON OFF button is faulted and if the fuse is burned out No displaying after power on Check if the backlight inverter cable is correctly connected No response after pressing any button in condition that the other parts work normally Check if the keypad cable is correctly connected to the main board Every time the oscilloscope is turned on the Time displays at the lower right corner restores to its initial value Check and replace the button battery on the main board There is No 1KHz square waveform outputting after performing appropriate compensation to the probe connected to the SDS1000CML CNL DL oscilloscope Upgrade current software release or replace a new main board SDS1000CML CNL DL Service Manual 49 SIGLENT Maintenance Maintain summary SIGLENT warrants that the products it manufactures and sells are free from defects in materials and workmanship for a period of three years from the date of shipment from an authorized SIGLENT distributor If a product or CRT proves defective within the respective period SIGLENT will provide repair or replacement as described in
6. Removing the Keypadi a s veer ests obese nt ab eh lai ai 40 Removing the Front Panel KNObS sese eee eee eee 30 TOUDIES TO OUING PT eee 41 General troubles crac aaa 41 Troubleshooting the Hardware Failures eee e 43 ESD Precaulions silice 43 Required Equipment cca 43 Main Board Drawing 44 Troubleshooting FIOWEhatt 21 criari 45 Checkthe RowerSUpplyscssohianniilai dida 46 Check the Main Board sese 47 Check the Display Module nnn 48 Troubleshooting the General Hardware Failures 49 Maintenance 50 Maintain Summary aaa 50 Inspecting and Care oo ela ile cool eni re ni Dl 50 General INSPeCunG vetet AAA A ai 50 General Care and Cleaning uni 51 Extended Service Bir ARIE MBSE Extended Service DetailS Bir ARE MBE Contact SIGLEN T oder bian 53 Replaceable Pars aaa 52 SDS1000CML CNL DL Service Manual V SIGLENT General Features and Specifications General Features SDS1000CML CNL DL series oscilloscope is two channel instrument in small lightweight benchtop chassis that you can use to take ground referenced measurements Table 1 1 General features Model Channels Bandwidth Sampling Rate Memory Depth SDS1072CML 2 7OMHz 1GSa s 2Mpts Depth memory SDS1102CML 2 100MHz 1GSa s 2Mpts Depth memory SDS1152CML 2 150MHz 1GSa s 2Mpts Depth memo
7. the complete warranty statement To arrange for service or obtain a copy of the complete warranty statement please contact your nearest SIGLENT sales and service office Except that as provided in this summary or the applicable warranty Statement SIGLENT makes no warranty of any kind express or implied including without limitation the implied warranties of merchantability and fitness for a particular purpose In no case shall SIGLENT be liable for indirect special or consequential damages Inspecting and Care This section explains how to inspect the oscilloscope and shipping container as well as general care and cleaning of the oscilloscope Here are detailed contents about this General Inspecting 1 Inspect the shipping container Keep the damaged shipping container or cushioning material until the contents of the shipment have been completely checked and the instrument has passed both electrical and mechanical tests The consigner or carrier will be responsible for damages to the instrument resulting from shipment SIGLENT would not provide free maintenance or replacement 2 Inspect the instrument If there are instruments found damaged defective or failure in electrical and mechanical tests please contact SIGLENT 3 Check the accessories Please check the accessories according to the packing list If the accessories are incomplete or damaged please contact your SIGLENT sales representative 50 SDS1000CML CNL DL Ser
8. 00M then go on to test if the clock T4 is 25MHz If it is then the main board proves normal Or you need to return the oscilloscope to manufacturer to have it repaired by qualified personnel SDS1000CML CNL DL Service Manual 47 SIGLENT Check the Display Module Here are procedures for testing the Display Module 1 N 3 Disconnect the power cord and make sure the display module cable and the backlight inverter cable are correctly connected Connect the power cord and turn on the oscilloscope If the screen remains dark then go to test the voltage value of the backlight inverter cable If the measurement is within the range of 11V 9V please reconnect the backlight inverter cable to make sure its correct connecting If the screen still remains dark as a consequence a new LCD is required If the measurement is beyond the range of 11V 9V you need to replace a new power supply board If the screen gets bright but displaying abnormal then go to test the 30M Clock point located on the main board If the Clock tested is 30M then the failure may come from the display module you need to return the oscilloscope to manufacturer to have it repaired by qualified personnel Otherwise the failure may come from the main board a new one is required necessary 48 SDS1000CML CNL DL Service Manual SIGLENT Quick Guide for General Hardware Failures The general hardware failures are listed in the table below
9. 02CML CNL DL 150MHz if you are testing a SDS1152CML SDS1000CML CNL DL Service Manual 21 SIGLENT 200MHz if you are testing a SDS1202DL Table 3 4 Bandwidth test data Volts Div Input frequency Vpp measured 500mv div 10Hz 3 0v 100Hz 1KHz 10KHz 100KHz 1MHz 10MHz 20MHz 30MHz bandwidth 200mv div 10Hz 1 2V 100Hz 1KHz 10KHz 100KHz 1MHz 10MHz 20MHz 30MHz bandwidth 7 Every time you set to a frequency it is better for you to adjust the Sec Div to a proper value thus to display a perfect waveform 8 The Vpp measurement of the waveform will decrease as the input frequency increases Increasing the input frequency gradually until the Vun measurement gets closest to 2 12v 9 Disconnect the connection of channel 1 10 Check channel 2 in the same way as step 1 to 9 For test at 200mv div please perform the same operation as that at 500mv div except for the initial amplitude and amplitude at bandwidth listed below Table 3 4 Amplitude at bandwidth x Initial Amplitude Initial velte Dly amplitude at bandwidth frequency 500mv div 3v 0 707 X 3v 2 12v 10 Hz 200mv div 1 2v 0 707 X 1 2v 0 848v 10 Hz 22 SDS1000CML CNL DL Service Manual SIGLENT To verify Time Base Accuracy This test checks the time base accuracy of one channel In the test both the impeda
10. 2 3 Pass Fail submenu items Submenu Setting Enable Test On Source CH1 Msg Display On Output Pass Stop On Output Off Mask setting X Mask 0 24div arbitrary Y Mask 0 28div arbitrary Note remember to press Create Mask to complete Mask setting after x mask setting and y mask setting After selecting the corresponding option as table above you will see the waveform displays as the following 16 SDS1000CML CNL DL Service Manual SIGLENT Total 308 UTILITY D Self Cal D DO O Self Test Print Setup Back USB USBT MC Next Page 1 G0000KHz Page 2 4 M 250ps M Pos 0 00 Figure 2 9 Pass Fail Waveform If the waveform is in the range that set under menu of Mask setting it is allowed to pass Otherwise it fails to pass 4 Connect the Pass Fail BNC connector of the SDS1000CML CNL DL oscilloscope and channel 1 BNC connector of another oscilloscope using a BNC cable 5 If the Pass Fail interface works normally you will see a pulse wave displays as below by properly adjusting the time base and voltage scale Otherwise there might be errors to the interface Figure 2 10 Pulse Waveform SDS1000CML CNL DL Service Manual 17 SIGLENT Performance Test This chapter mainly explains how to perform tests to make sure that the oscilloscope meets the performance specifications For accurate test results please let the test requirement and the oscilloscope warm up 30 min
11. 3 Remove the six screws located on the edge of the power supply module 4 Lift the power supply module up and off carefully To install the power supply module please operate as the reverse steps 34 SDS1000CML CNL DL Service Manual SIGLENT Removing the Metal Shelf E gt e Metal shelf screw at do Metal shelf Figure 5 6 Removing the Metal Shelf Removing steps 1 Place the oscilloscope face down on a soft surface such as an anti static mat 2 Disconnect the display module cable and keypad module cable connected to the main board module 3 Remove the five screws located on the edge of the metal shelf 4 Separate the metal shelf from the front panel and then lift it up and off carefully to avoid your hand scratched from the sharp edge of the metal shelf To install the metal shelf please operate as the reverse steps SDS1000CML CNL DL Service Manual 35 SIGLENT Removing the Main Board Module Main board module screw Figure 5 7 Removing the main board module 36 SDS1000CML CNL DL Service Manual SIGLENT eoneee s Figure 5 8 Removing the main board module Removing steps 1 Place the metal shelf on a soft surface as the figure above shows such as an anti static mat 2 Disconnect the fan module cable and power supply module cable connected to the main board module 3 Remove the six screws located on the edge of the main board module 4 Separate the main board mo
12. Counter Readout Resolution 1Hz Frequency Range From 10Hz to rated Bandwidth Signal Types Apply to all signals that can correctly trigger except for Pulse signal and Video signal 4 SDS1000CML CNL DL Service Manual SIGLENT Table 1 3 Oscilloscope general specifications Display System Display Type Color TFT 7in 178mm Liquid Crystal Display Resolution 480 horizontal by 234 vertical pixels Display Color 24 bit Display Contrast l Typical state Ton Backlight Intensity Typical state pouri Wave display range 8 x 18 div Wave Display Mode Dot Vector Persist Off 1 sec 2 sec 5 sec Infinite Menu Display 2 sec 5 sec 10 sec 20 sec Infinite Screen Saver Off 1min 2min 5min 10min 15min 30min 1hour 2hour 5hour Skin Classical Modern Tradition Succinct Waveform Interpolation Sin x x Screen Display Normal Invert Language Simplified Chinese Traditional Chinese English Arabic French German Russian Portuguese Japanese Korean Italian Power Supply Input Voltage 100 240 VAC CAT II Auto selection Frequency Scope 45Hz to 440Hz Power lt 50VA Environments Temperature Operating 10 C to 40 C Not operating 20 C to 60 C Cooling The fan forces it cold Humidity Operating 85 RH 40 C 24 hours Not operating 85 RH 65 C 24 hours Heig
13. DS1000CML CNL DL Service Manual SIGLENT Troubleshooting Flowchart The following flowchart describes how to troubleshoot the oscilloscope making it easy for you to understand the troubleshooting procedures at first view Check Power Board a Change Power Board Yes Check Main Board Change NO Main Board Yes Check Keyboard and LCD Figure 6 2 Troubleshooting flowchart SDS1000CML CNL DL Service Manual 45 SIGLENT Check the Power Supply Before performing the power supply testing procedure please make sure that the oscilloscope is grounded through the protective lead of the power cord take care not to touch or even disassemble the power supply module without any safety precautions or you may probably suffer from electric shock or burn Here are procedures for testing the power supply 1 2 3 A Disconnect the power cord of the oscilloscope and then check whether the fuse has been burnt out Remove metallic cover of the power supply module using a driver and then connect the power cord Focus at the Power Connector which contains 12 pins from Pin1 to Pin12 on the main board You can test voltages provided by power supply at these points to check whether the voltage values are within specified range using a digital multimeter The voltage parameters to be tested are listed in table below Table 6 2 Voltage parameters of the power supply module Volta
14. IGLENT Adjusting Procedures This chapter explains how to adjust the SDS1000CML CNL DL series oscilloscope with FLUKE 9500B for optimum operating performance Only qualified personnel should perform this procedure Warming up Before performing the adjustment procedures you must let the oscilloscope and other test equipments warm up for at least 30 minutes in an ambient temperature between 20 C and 30 C Adjustments performed prior to warm up or outside this temperature range may result in poor performance Self calibration The Self Cal performs an internal routine which uses internally generated signals to optimize circuits that affect channel sensitivity offset and trigger parameters to optimize the signal path in the oscilloscope Let the oscilloscope warm up before performing this procedure Required Equipments PC Inter Pentium processor Windows XP operating system USB interface Microsoft Office Excel 2003 NI GPIB Card and corresponding NI 488 2 driver Calibrating Software EasyTest Adjustment script Test Instrument FLUKE 9500B with active head An USB cable Type AB A GPIB cable Two 10 inch BNC cables A BNC T connector Software Installation 1 Install the NI 488 2 driver select custom installation to install NI VISA 2 Install the EasyTest software 3 Decompress production zip file to E disk directory Adjusting steps 1 Connect the FLUKE 9500B with PC using a GPIB cable 2 Connect the oscillo
15. L Service Manual SIGLENT Disconnect Everything from All Inputs press RUN STOP key to exit Figure 2 3 Calibration interface 3 Press SINGLE to begin Disconnect Everything from All Inputs Figure 2 4 Calibration interface 4 After the Self Calibration completed Press RUN STOP key to exit Note In normal condition the self calibration will take about 20 seconds If it does not complete within this period or stop at one of the calibration items there may be failures inside the instrument SDS1000CML CNL DL Service Manual 11 SIGLENT Interface Test The SDS1000CML CNL DL oscilloscope is designed with four standard interfaces USB Host interface on the front panel USB Device interface RS 232 interface and Pass Fail interface on the rear panel Being connected to other instruments via these interfaces enables the oscilloscope to realize some advanced functions To make sure the oscilloscope can work normally please test the interfaces at first USB Host Test To test if the USB Host interface works normally Tools e An SDS1000CML CNL DL digital oscilloscope e An U disk Steps 1 Insert an U disk into the USB Host interface on the front panel of the oscilloscope 2 Quickly a prompt message USB Flash Drive Plug In appears on the screen which suggests the U disk has been recognized successfully CH1 Coupling DC By Limit Volts Diy Probe USB Flash Drive Plugged In K Next Page
16. OSE Tests lea elia edile 12 WUsBPeviceTest dad 14 LAN TEST aires 15 Pass Fail T ee Ra Reali 16 Performance TeSa ele a el illa 18 Verify TesEResullsisorienazienaniena i alora ianlorz ani het 19 sel Testo la osso cugini pala cur ne le na ale 19 sell Galibralioni s reale ees 19 To verify DC Gain Accuracy urine nege iena ze gaia 20 To verify Bandwidth lello lillo ine ii 21 To verify Time Base Accuracy i 23 To verify Trigger Sensitivity aseve eee eer eee eee eee er 24 Adjusting Procedures 2 1 0 40 seed eee ee 26 Warming Up caries e 26 Self CAMA Ri IIIa 26 Required Equipments sese eee eee oriali 26 Software Installation ee 26 AGJUSHAG SISpS iee i iaia la iaia ia i ia 26 Assembly Procedures casi ail delia 28 Security Consideration 28 Listo Modules maci eae lasting a a a e a 28 Required 100 81 29 Disassembly Procedures rrr rereeene 29 Removing the Rear Panel 2 4 aii eis 31 Removing the Top Metal Cover eee 33 Removing the Rear Metal Cover i 32 Removing the Power Supply Module sss sese 34 Removing the Interface Module Hr ARE MBE Removing the Fan Module 38 Removing the Main Boards sig sele 36 Removing the Metal Shete eee 35 Removing the Display Module sss 39 Removing the Front Panel Module EAR ARIE MBSE IV SDS1000CML CNL DL Service Manual SIGLENT
17. Service Manual SDS1000CML CNL DL Series Digital Oscilloscope 2013 SIGLENT TECHNOLOGIES CO LTD SIGLENT Guaranty and Declaration Copyright SIGLENT TECHNOLOGIES CO LTD All Rights Reserved Trademark Information SIGLENT is the registered trademark of SIGLENT TECHNOLOGIES CO LTD Declaration SIGLENT products are protected by patent law in and outside of P R C SIGLENT reserves the right to modify or change parts of or all the specifications or pricing policies at company s sole decision Information in this publication replaces all previously corresponding material Any way of copying extracting or translating the contents of this manual is not allowed without the permission of SIGLENT SIGLENT will not be responsible for losses caused by either incidental or consequential in connection with the furnishing use or performance of this manual as well as any information contained Product Certification SIGLENT guarantees this product conforms to the national and industrial standards in china as well as the ISO9001 2008 standard and the ISO14001 2004 standard Other international standard conformance certification is in progress SDS1000CML CNL DL Service Manual SIGLENT General Safety Summary Review the following safety precautions to avoid personal injuries and prevent damages to this product or any products connected to it To avoid potential hazards use this product only as specified Only qua
18. Tools e An SDS1000CML CNL DL Oscilloscope e A computer with RS 232 interface e A standard RS 232 cable Steps 1 Super Terminal is a type of software within Windows XP itself Firstly you should set up a Super Terminal shortcut on your desktop Remember to set the Baud Rate to 38400 during the setup procedures 2 Connect the oscilloscope and the computer using a RS 232 cable via RS 232 interface Open the Super Terminal shortcut that set in step 1 on your desktop Figure 2 7 RS 232 interface 3 You can input any letter or figure and it will response to you This function is designed for secondary development TRO REO SEW HUC HC HHO Ose 53 DAS Li dritti tiv BE 0 02 1 Babi 38400 eni OL CAPS wm SR STEN Figure 2 8 RS 232 Super Terminal interface SDS1000CML CNL DL Service Manual 15 SIGLENT Pass Fail Test To test if the Pass Fail interface works normally connected with another oscilloscope Tools ASDS1000CML CNL DL Oscilloscope An oscilloscope of any type Two BNC cables An arbitrary Waveform Generator Steps 1 Turn on the SDS1000CML CNL DL oscilloscope 2 Input 1 KHz Sine signal to the oscilloscope using an arbitrary Waveform Generator through a BNC cable then press AUTO on the front panel of the oscilloscope 3 Press UTILITY button page3 4 Pass Fail set the submenus under the Pass Fail menu as table below Table
19. andwidth of two input channels In the test both the impedance of FLUKE and the oscilloscope are required to set to 500 we could complete that for FLUKE by easy operation on the front panel But for the oscilloscope it proves to be a little different since it is designed with only 1M Q in impedance So a 500 feedthrough terminator is needed essential to complete the verification Table 3 3 Input Impedance for SDS1000CML CNL DL Model Channels Bandwidth Input Impedance SDS1072CML 2 TOMHz 1MQ SDS1102CML 2 100MHz 1MQ SDS1152CML 2 150MHz 1MQ SDS1072CNL 2 TOMHZz 1MQ SDS1102CNL 2 100MHz 1MQ SDS1022DL 2 25MHz 1M 0 SDS1052DL 2 50MHz 1MQ SDS1102DL 2 100MHz 1MQ SDS1202DL 2 200MHz 1MQ The 500 feedthrough terminator is added to end of the probe specified for FLUKE 9500B To test the bandwidth at 500mv div and 200mv div Steps 1 Connect channel 1 of the oscilloscope to Sine Wave Generator of FLUKE 9500B via its specified probe 2 Set the oscilloscope Volt Div to 500mv div the Sec Div to 50ms div 3 Set the frequency of Sine Wave Generator of FLUKE to 10Hz 4 Set the amplitude of Sine Wave Generator to 3v 5 Press the MEASURE button on the front panel of the oscilloscope to display Vpp measurement 6 Set the frequency of Sine Wave Generator to 25MHZ if you are testing a SDS1022DL 50MHZ if you are testing a SDS1052DL TOMHZ if you are testing a SDS1072CML CNL 100MHz if you are testing a SDS11
20. board 1 Several kinds of connectors including Fan Connector LCD Connector and Keypad Connector are located on the main board Check if all these connectors are connected properly 2 Make sure that the connectors on the main board are properly connected then connect the power supply module cable to appointed place of the main board lastly connect the oscilloscope power cord and turn on the oscilloscope Check if the voltage values at all test points are within the spec range using a digital multimeter The voltage parameters to be tested are listed in table below Table 6 3 Voltage parameters of the main board Components tested Voltage V Error V C191 5 0 1 CL1 5 0 1 CL2 5 0 1 CL3 25 071 CL7 1 25 0 1 If there is at least one tested voltage value beyond the spec range referring to the table above please turn off the oscilloscope and cut the power immediately to avoid damage to the chips or even the main board due to its abnormal working Otherwise you need to replace a new main board as a consequence If each tested voltage value is within the spec range please go to the next step 3 Check if the Clock on the main board works normally using an oscilloscope Focus at the test clock T53 marked with 100M Clock on the main board drawing If the clock measured is not 100M then the failure may come from the main board a new one is required necessary If the clock measured is 1
21. connecting the cables connected to main board or display module please turn off the oscilloscope and cut the power 3 While performing any internal testing of the oscilloscope please take some precautions to avoid damages to internal components or modules results from electrostatic discharge ESD ESD Precautions While performing any internal testing of the oscilloscope please refer to the following precautions to avoid damages to internal modules or components result from ESD Touch circuit boards by the edges as possible as you can Reduce handling of static sensitive modules when necessary Wear a grounded antistatic wrist strap to insulate the static voltage from your body while touching these modules Operate static sensitive modules only at static free areas Avoid handling modules in areas that allow anything capable of generating or holding a static charge Required Equipments The equipments listed in the table are required to troubleshoot the oscilloscope Table 6 1 Required equipments Equipment Critical Specifications Example E Accuracy 0 05 Agilent 34401A Digital Multimeter Lin resolution Oscilloscope 100MHz Bandwidth MSO7012B SDS1000CML CNL DL Service Manual 43 SIGLENT Main Board Drawing Please refer to the following drawing to quickly locate test points on the main board for easy resolution of the failures you encounter Figure 6 1 Main board module 44 S
22. dule from bottom of the metal shelf and lift it up and off carefully to avoid your hand scratched from the sharp edge of the metal shelf To install the main board please operate as the reverse steps SDS1000CML CNL DL Service Manual 37 SIGLENT Removing the Fan Module Fan module screw Figure 5 9 Removing the fan module Removing steps 1 Place the metal shelf on a soft surface as the figure above shows such as an anti static mat 2 Remove the four screws located on the fan module 3 Separate the fan from the metal shelf and then remove it away carefully To install the fan module please operate as the reverse steps 38 SDS1000CML CNL DL Service Manual SIGLENT Removing the Display Module gt Display module screw w i N E e Front cover Figure 5 10 Removing the Display Module Removing steps 1 Place the front panel module on a soft surface as the figure above shows such as an anti static mat 2 Disconnect the display cable from the front panel module 3 Remove the four screws located on the edge of the display module 4 Separate the display module from the front cover and then lift it up and off carefully to avoid scratching the LCD screen To install the display module please operate as the reverse steps SDS1000CML CNL DL Service Manual 39 SIGLENT Removing the Keypad Module e i il e Keypad circuit board screw Keypad circuit board Figure 5 11 Removing t
23. e CH1 Condition gt at Rising slope Slope TRIGGER Time 1 00ms Mode Auto Vertical The higher level Source CH1 Mode Edge Alternative Coupling DC Slope Rising 8 SDS1000CML CNL DL Service Manual SIGLENT Probe Compensation It is better for you to compensate the probe at first use so as to match it to the probe ratio of current input channel Non compensated or poorly compensated probe may cause measurement inaccuracy or error The probe compensation steps are as follows 1 Set the attenuation switch to 10X on the probe Figure 2 2 Set probe attenuation switch 2 Connect the alligator clip of the probe to the Ground Terminal on the front panel firstly and then use the probe to connect CH1 BNC connector and the Compensation Signal Output Terminal a gt Ground Terminal Compensation Terminal 3 Press AUTO 4 Observe waveform on the screen The display should be a square waveform as shown in the figure below in normal condition UU U Under compensated over Compensated correctly compensated 5 If the waveform does not show as compensated correctly you should use a nonmetallic driver to adjust the low frequency compensation adjustment hole on the probe until the waveform displays correctly SDS1000CML CNL DL Service Manual 9 SIGLENT Auto Setup Press AUTO to enable the waveform auto setting function The oscilloscope will automatically adjust its horizontal time base vertical scale and trigge
24. following conditions The oscilloscope must have been operating continuously for thirty minutes within the specified operating temperature You must perform the Do Self Cal operation accessible through the Utility menu if the operating temperature changes by more than 5 C The oscilloscope must be within the factory calibration interval of one year All specifications are guaranteed unless noted typical Table 1 2 Oscilloscope specifications Inputs Input Coupling AC DC GND Input Impedance C1MQO 2 16Pft3Pf Maximum input voltage 400Vpk CAT Probe attenuation 1X 10X Probe attenuation ratio 1X 5X 10X 50X 100X 500X 1000X Vertical System Volts Div Range 2mV div 10V div in 1 2 5 sequence Channel Voltage Offset Range 2mV 200mvV 1 6V 206 mV 10V 40V Vertical Resolution 8 bit The number of channel 2 Analog Bandwidth 25M SDS1022DL 50M SDS1052DL 70M SDS1072CML SDS1072CNL 100M SDS1102CML SDS1102CNL SDS1102DL 150M SDS1152CML 200M SDS1202DL 2 SDS1000CML CNL DL Service Manual SIGLENT Lower Frequency Limit lt 10Hz at BNC AC Coupled DC Gain Accuracy lt 3 0 5mV div to 10V div lt 4 0 typical for 2mV div DC Measurement Accuracy 3 reading offset 1 offset 0 2div 2mV lt 100mV div 3 reading offset 1 offset 0 2div 100mV
25. form range If yes set the trigger level to the middle or change the trigger Mode to Auto Note press AUTO could automatically replace the above setting 6 The waveform displays like ladder 1 The horizontal time base may be too low you could increase it to improve the horizontal resolution so as to obtain a good waveform displaying 2 The lines between the sample points may also cause ladder like displaying if the Type in menu of DISPLAY is Vectors Please turn the Type to Dots to solve the problem 7 U disk can t be recognized 1 Check if the U disk can work normally 2 Check if the USB Device interface can work normally 3 Make sure that the U disk being used is of flash type the instrument does not support U disk of hardware type 4 Make sure that the capacity of the U disk is FAT32 file system 5 Restart the instrument and then insert the U disk to check it 6 If it is still in abnormal use please contact SIGLENT 42 SDS1000CML CNL DL Service Manual SIGLENT Troubleshooting the Hardware Failures This section provides information and procedures to help you deal with general hardware failures you encounter while operating the oscilloscope When troubleshooting these failures it is essential for you to take into consideration of the following notices 1 Please disconnect the power if you find measured voltage value is different from the standard 2 Before dis
26. ge value V Pin Error 0 GND Pin1 Pin5 Pin8 Pin12 NULL 15 Pin2 5 6 3 Pin3 Pin4 10 3 3 Pin6 Pin7 5 9 Pin9 10 If each tested voltage value is within the spec range referring to the table above then check the power supply ripple using an oscilloscope If the ripple appears small then the power supply works normally Otherwise it proves to be faulted If there is at least one tested voltage value beyond the spec range please go to the next step Disconnect the cable connected to main board and then perform the testing procedures as the table above again If each tested voltage value is within spec range referring to the table above then it is the failure of the main board load that leads to problematic power supply Continuous checking or even replacing the main board is required for further test If there is at least one tested voltage value beyond the spec range then the power supply module proves faulted and a new one is needed For safety please do not disassemble the power supply module by yourself 46 SDS1000CML CNL DL Service Manual SIGLENT Check the Main Board If you want to remove the main board from the metal shelf inside the oscilloscope you d better place it on a clean insulated mat In addition to avoid some chips or components on the main board being damaged for overheating it is essential to cool the main board whenever possible using a fan Here are procedures for testing the main
27. han 150KHz LF REJ attenuate signal that lower than 7KHz Trigger Level CH1 CH2 6divisions from center of screen Range EXT 1 2V EXT 5 6V CH1 CH2 1division DC 10MHz 1 5divisions 10MHz BWmax re EXT 200mV DC 10MHz Trigger Sensitivity 300mV 10MHz BW max 1Vpp DC 10MHz EXT 5 1 5Vpp 10MHz BWmax 0 4division withint4divisions Trigger Level Cane from center of screen Accuracy EXT 6 of setting 40mV EXT 5 6 of setting 200mV Trigger Location Pre trigger Memory depth 2X sampling rate Delay Trigger 268 04div Holdoff Range 100ns 1 5s Edge Trigger Trigger Mode Rising slope Falling slope Rising and Falling slope Pulse Trigger Trigger Mode lt gt positive pulse width lt gt negative pulse width Pulse Width Range 20 ns 10s Support signal Formats Pal Secam NTSC Video Trigger Trigger condition Odd Field Even Field All Lines Line Num Trigger Mode gt lt rising slope Slope Trigger gt lt falling slope Time 20ns 10s Alternative Trigger Allow two channels trigger simultaneously and support four trigger mode Edge Pulse Video Slope X Y Mode X axis Y axis input CH1 CH2 Sampling Rate XY Mode breaks the limit of sampling rate at 1MSa s of traditional oscilloscope and supports sampling rate between 25KSa s 250MSa s Hardware Frequency
28. he Keypad Module Removing steps 1 Place the front panel module on a soft surface as the figure above shows such as an anti static mat 3 Remove the seven screws located on the edge of the printed circuit board 2 Remove the keypad circuit board from the soft keypad which is made of silica gel to avoid touching the electrical contacts 3 Separate the soft keypad from the front panel and then remove it carefully To install the keypad please operate as the reverse steps 40 SDS1000CML CNL DL Service Manual SIGLENT Troubleshooting This chapter explains how to deal with general troubles you may encounter while operating SDS1000CML CNL DL series oscilloscope General troubles 1 2 3 4 The screen remains dark after power on 1 Check if the power cord is correctly connected 2 Check whether the fuse is burned out If the fuse needs to be changed please contact with SIGLENT as soon as possible and return the instrument to the factory to have it repaired by qualified personnel authorized by SIGLENT 3 Restart the instrument after completing inspections above 4 If it still does not work normally please refer to the Display Troubleshooting or contact SIGLENT After the signal is sampled there is no corresponding waveform displaying 1 Check if the signal connecting cord is correctly connected to BNC connector 2 Check if the Intensity knob on the front panel is properly adjusted 3 Check if
29. ht Operating 3000m Not operating 15 266m Mechanical Dimension length 323 1mm Width 135 6mm Height 157mm Weight 2 5kg SDS1000CML CNL DL Service Manual 5 SIGLENT Prepare Information Before doing performance verifying or procedure adjusting you should master the following operations to make the oscilloscope work in a good state or deal with some simple functional problems This chapter includes the following contents How to perform functional checks How to operate four standard interface tests How to use self calibration routine How to recall factory Default settings Fore more detailed information about oscilloscope operation please refer to you Quick Guide Functional checking This functional checking covers three kinds of checks by which you can verify whether the oscilloscope works normally Power on Inspection The normal operating voltage for SDS1000CML CNL DL series digital oscilloscope is in range of 100 240VRMS with frequency from 45Hz to 440Hz Connect the power line to the socket on the rear panel of the oscilloscope The socket Figure 2 1 Connect power line Note To avoid electric shock make sure that the instrument is correctly grounded to the earth before connecting AC power 6 SDS1000CML CNL DL Service Manual SIGLENT Press the Power button located at the top of the oscilloscope and some keys will be lighted for about 6 seconds simultaneously until the boot screen appears Then the o
30. l channels Steps 1 Set the DC voltage source output level to Ov 2 Connect channel 1 of the oscilloscope to the DC voltage source of FLUKE 9500B using its specified cable 3 Set the Volts Div of channel 1 to 10v div 4 Set the DC voltage output level to the positive voltage listed below and then record the reading as Vpos 5 Reverse the polarity of the DC voltage source and then record the reading as Vneg 6 Vsub Vpos Vneg Calculate Vsub and then check to see if it is in the accuracy limits range 7 Set the Volts Div of channel 1 from 5v div to 2mv div and then record the reading in the same way as step 4 to 6 8 Set DC voltage source output level to Ov 9 Disconnect the connection of channel 1 10 Check channel 2 in the same way as step 1 to 9 Table 3 2 DC Gain Accuracy Volt Div DC voltage output levels Accuracy limits range for Vsup 10v div 30V 30V 58 2V 61 8V 5v div 15V 15V 29 1 V 30 9 V 2v div 6V 6V 11 64 V 12 36 V 1v div 3V 3V 5 82 V 6 18 V 500mv div 1 5V 1 5V 2 91 V 3 09 V 200mv div 600mV 600mV 1 164 V 1 236 V 100mv div 300mV 300mV 582 mV 618 mV 50mv div 150mV 150mV 291 mV 309 mV 20mv div 60mV 60mV 116 4 mV 123 6 mV 10mv div 30mV 30mV 58 2 mV 61 8 mV bmv div 15mvV 15mV 29 1 mV 30 9 mV 2mv div 6mV 6mV 11 52 mV 12 48 mV 20 SDS1000CML CNL DL Service Manual SIGLENT To verify Bandwidth This test checks the b
31. lified personnel should perform service procedures To Avoid Fire or Personal Injuries Use Proper Power Cord Use only the power cord specified for this product and approved by local state Avoid Electric Shock To avoid injuries or losses of life do not connect or disconnect probes or test leads while they are connected to a voltage source Ground the Product This product is grounded through the protective terra conductor of the power line To avoid electric shock the grounding conductor must be connected to the earth Make sure the instrument is grounded correctly before connecting its input or output terminals Connect the Probe Properly Do not connect the probe ground lead to a high voltage since it has the isobaric electric potential as ground Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markers on the instrument and check your manual for more information about ratings before connecting Use Proper Fuse Use only the specified fuse Do Not Operate Without Covers Do not operate this instrument with covers or panels removed Avoid Circuit or Wire Exposed Do not touch exposed junctions and components when the unit is powered Il SDS1000CML CNL DL Service Manual SIGLENT Do Not Operate With Suspected Failures If you suspect damage occurs to this instrument have it inspected by qualified service personnel before further operation Any maintenance adjustment or replacement especia
32. lly to the circuits or accessories should be performed by SIGLENT authorized personnel Keep Product Surfaces Clean and Dry Do Not Operate in Wet Damp Conditions To avoid electric shock do not operate the instrument in wet or damp condition Do Not Operate in an Explosive Atmosphere To avoid injuries or fire hazards do not operate in an explosive atmosphere Safety Terms and Symbols Terms on the Product These terms may appear on the product DANGER Indicates an injury or hazard that may immediately happen WARNING Indicates an injury or hazard may be accessible potentially CAUTION Indicates damage to the instrument or other property may occur Symbols on the Product These symbols may appear on the product A A r Hazardous Refer to Protective Chassis Test Voltage Instructions Earth Ground Ground Terminal SDS1000CML CNL DL Service Manual III SIGLENT Contents Guaranty and Declaration serere I General Safety Summary lina iaia Il General Features and Specifications ccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 1 GeneralFealures otel eee il Git 1 Specifications nati paaododagdodogganiizadadadaa 2 Prepare Informationis siauia iii 6 FunciionalCNecKIMO leoni 6 Power On Inspection rtt rrrtennnnnr rnt reereenn 6 Defa SS CLUB uct icaro alii 7 Probe Compensation bielle 9 A toSet p TT 10 pel Galibrationacolielanie livella lio ia 10 Interface Test olearia 12 WSB H
33. nce of FLUKE and the oscilloscope are required to set to 500 It is convenient for FLUKE by easy operation on the front panel But for SDS1000L oscilloscope you need to add a 500 feedthrough terminator at the end of spec head of FLUKE Time Base Accuracy Freq 10M lt 50ppm Steps 1 Connect selected channel of the oscilloscope to the Sine Wave Generator of FLUKE 9500B Set the frequency of the Sine Wave Generator to 10MHz Set the oscilloscope Volts Div to 500mv div Set the oscilloscope Sec Div to 1ms div a A O N Press MEASURE button on the front panel of the oscilloscope to display Freq measurement D Calculate Freq 10M to see if the value is within the range of 50ppm which means correct time base accuracy NI Disconnect the test connection SDS1000CML CNL DL Service Manual 23 SIGLENT To verify Trigger Sensitivity To test trigger sensitivity at the frequency of 100KHz 10MHz and bandwidth Table 3 5 Trigger sensitivity data Volts Div Frequency Trigger Range 500mv div 100KHz 500mVpp 500mv div 10MHz 500mVpp 500mv div bandwidth 750mVpp Steps 1 connect the selected channel of the oscilloscope to the Sine Wave Generator of FLUKE 9500B 2 Set the oscilloscope Volts Div to 500mv div 3 Set the oscilloscope Sec Div to 5us div 4 Set the frequency of the Sine Wave Generator to 100KHz 5 Set the amplitude of the Sine Wave Generator to 500mVpp so that the Vpp measureme
34. nt of the oscilloscope is approximately 500mv 6 Press Trigger LEVEL button to move the waveform to the screen center 7 Adjust the Trigger LEVEL within the waveform range to check if there is stable trigger 8 Set the oscilloscope Sec Div to 50ns div 9 Set the frequency of the Sine Wave Generator to 10MHz 10 Set the amplitude of the Sine Wave Generator to 500mVpp so that the Vpp measurement of the oscilloscope is approximately 500mv 11 Press Trigger LEVEL button to move the waveform to the screen center 12 Adjust the Trigger LEVEL within the waveform range to check if there is stable trigger 13 Set the oscilloscope Sec Div to 5ns div 14 Set the frequency of the Sine Wave Generator to 25M if you are testing a SDS1022DL 50MHZ if you are testing a SDS1052DL TOMHZ if you are testing a SDS1072CML SDS1072CNL 100MHZz if you are testing a SDS1102CML CNL DL 150MHZ if you are testing a SDS1152CML 200MHZz if you are testing a SDS1202DL 24 SDS1000CML CNL DL Service Manual 15 16 17 18 19 SIGLENT Set the amplitude of the Sine Wave Generator to 750mVpp so that the Vpp measurement of the oscilloscope is approximately 750mv Press Trigger LEVEL button to move the waveform to the screen center Adjust the Trigger LEVEL within the waveform range to check if there is stable trigger Disconnect the test connection Check CH1 in the same way as step 1 to 18 SDS1000CML CNL DL Service Manual 25 S
35. r mode according to input signal to obtain an optimum waveform display Table2 2 Auto setting menu Introduction Display several periods waveform Multi cycle sine m Display single period waveform Single cycle sine fo Display the rising edge of waveform Rising edge A Display the falling edge of waveform Falling edge MI Recall the previous setup of oscilloscope Undo Setup Four parameters will display on the screen after the stability of the waveform Which channel to select as the trigger source when several channels are on based on the following conditions The input signal frequency must be higher than 10Hz with the amplitude higher than 8MV Selecting channel with the lowest frequency while several channels are connected with signal Self Calibration The self Calibration procedure can quickly optimize the signal path thus to obtain the best measurement precision It is essential for you to run the procedure if the environmental temperature changes by 5 Cor more Otherwise please perform self calibration according to your actual conditions You can perform the Self Calibration procedure as the following steps Steps 1 Disconnect any probes or cables from all BNC connectors 2 Press the button UTILITY and then select the Do Self Cal option to enable the Self Calibration function The oscilloscope will turn to interface below 10 SDS1000CML CNL D
36. ry SDS1072CNL 2 7OMHz 1GSa s 40Kpts SDS1102CNL 2 100MHz 1GSa s 40Kpts SDS1022DL 2 25MHz 500MSa s 32Kpts SDS1052DL 2 50MHz 500MSa s 32Kpts SDS1102DL 2 100MHz 500MSa s 32Kpts SDS1202DL 2 200MHz 500MSa s 32Kpts The volume of the oscilloscope is cabinet and it is portable 7 Color TFT LCD display 2 channels Bandwidth 25MHz 200 MHz Single real time sampling rate are 500MSa s SDS1000DL 1Gsa s SDS1000CML CNL Equivalent sampling rate is 50GSa s Trigger types Edge Pulse Video Slope and Alternative Unique Digital Filter function and Waveform recorder function Auto measure thirty two parameters and support all measurement function Two groups reference waveforms and twenty groups capture waveforms and twenty groups setups internal save recall function and USB flash drive save recall function Cursor types Manual mode Track mode and Auto mode Channel waveform and its FFT waveform display on split screen SDS1000CML CNL DL Service Manual 1 SIGLENT Waveform Intensity and Grid Brightness can be adjusted Menu display in the form of pop up that in order to convenience users to use it Multiple Language User Interface Support Multilingual online help system Standard interface USB Host USB Device RS 232 Pass Fail Out Specifications These specifications apply to SDS1000CML CNL DL series Digital Storage Oscilloscopes To verify that an oscilloscope meets specifications it must first meet the
37. s to remove are listed Required Tools which describes the tools needed to perform the procedures Disassembly Procedures which describes in detail how to remove and install the modules Security Consideration Only qualified personnel should perform the disassembly procedures Whenever possible disconnect the power before you begin to remove or replace the modules Otherwise any personal injuries or damages to the components may occur Avoid Electric Shock Hazardous voltages exist on the LCD module and power supply module To avoid electrical shock you should firstly disconnect the power cord from the oscilloscope and then wait at least three minutes for the capacitors in the oscilloscope to discharge before you begin disassembly Preventing ESD Electrostatic discharge ESD can damage electronic components When doing any of the procedures in this chapter use proper ESD precautions As a minimum you should place the oscilloscope on a properly grounded ESD mat and wear a properly grounded ESD strap List of Modules The following removable modules are listed in the order of performing disassembly procedures 28 SDS1000CML CNL DL Service Manual Table 5 1 List of modules SIGLENT Number of Module Module _ Front Panel Knobs Rear Panel Rear Metal Cover Top Metal Cover Power Supply Module Metal Shelf Main Board Module Fan Module OO CO NI Dj dI SI WIN Displa
38. scilloscope begins to perform its power on tests automatically after that you can press the DEFAULT SETUP button to recall the factory default settings Default Setup When you press DEFAULT SETUP button waveforms of CH1 and removes waveforms of CH2 Table 2 1 Default settings the oscilloscope displays Menu or System Option Default setting Coupling DC Bandwidth limit Off CH1 CH2 Volts Div Coarse Probe 1x Invert Off Filter Off Operation FFT Operation Source CH1 MATH Window Hanning FFT Zoom 1X Scale dBVrms Display Split Delay Off HORIZONTAL SERI VOUS Position Os Window Zone 50us Type Off Source CH1 CURSOR Voltage 3 2 divisions Time 8 divisions Acquisition Sampling ACQUIRE Sin x x Sin x Mode Real Time Type Vectors Persistence Off Intensity 60 DOSI Brightness 40 Format YT Menu Display Infinite Type Setups SAVE RECALL Save to Device Setup No 1 SDS1000CML CNL DL Service Manual 7 SIGLENT Counter On UTILITY Pass Fail Off Record Off TRIGGER Type Edge Source CH1 Slope Rising Edge TRIGGER Mode Auto Coupling DC Level OV Source CH1 Condition at positive pulse Pulse TRIGGER Set Width 1 00ms Mode Auto Coupling DC Source CH1 Polarity Negative Video TRIGGER Sync All lines Standard NTSC Mode Auto Sourc
39. scope with PC using an USB cable 26 SDS1000CML CNL DL Service Manual SIGLENT E Probe 9500B accessory BNC T connector 10 inch BNC cable Figure 4 1 Connecting the adjusting devices 3 Turn on FLUKE 9500B and then set its GPIB address to 22 4 Turn on the oscilloscope and operate it for about 30 minutes then perform the Self Cal routine 5 Connect the oscilloscope and FLUKE as figure above using the specified probe provided as accessory BNC T connector and BNC cables 6 Open the EasyTest software 7 Click open under the file menu and then select the corresponding Tcl script 8 Click the test button to perform the adjusting procedures Note the adjusting procedures include four items as the following Debugvolt tcl indicates adjusting voltage Debugtrig tcl indicates adjusting trigger Debughori tcl indicates adjusting horizon Debugtrigpre tcl indicates adjusting trigger accuracy SDS1000CML CNL DL Service Manual 27 SIGLENT Assembly Procedures This chapter describes how to remove the major modules from the SDS1000CML CNL DL series oscilloscopes To install the removed modules or replace new modules please follow corresponding operating steps in reverse order The following contents are what mainly included in this chapter Security Consideration which describes security information needed to considerate while operating List of Modules in which the module
40. the probe is correctly connected to the item under test 4 Check if there are signal generated from the item under test You can connect the probe compensation signal to the problematic channel to determine the reason to the problem 5 Resample the signal The voltage amplitude measured is higher or lower than the actual value this error usually occurs in use of probe 1 Check if the attenuation coefficient of the current channel matches with the attenuation ratio of the probe 2 Check if the BW Limit under the menu of CH1 CH2 is on If it is on the amplitude of the waveform is lower than the actual value There is waveform displaying but not stable 1 Check the trigger source check whether the Source in menu of TRIG is the actual operating channel 2 Check if the waveform is wrong it is easy for us to regard the wrong waveform as the real when a high frequency signal is connected to the instrument You d better make sure that the current time base is correct for the frequency of input signal 3 Check the trigger type Edge trigger suits to general signal and Video trigger suits to video signal Only in correct trigger type can the waveform stably display 4 Change the setting of trigger holdoff SDS1000CML CNL DL Service Manual 41 SIGLENT 5 No display after pressing RUN STOP Check whether the trigger Mode is Normal or Single and if the trigger level exceeds the wave
41. utes before testing Here are the required equipments for the test Table 3 1 Test equipments Description Critical Specifications Example DC Voltage Source 6mv 30v 0 1 accuracy FLUKE 9500B 10Hz 300MHz Calibrator Sine Wave Generator 49 40 amplitude accuracy BNC m to BNC m PNG Cable About 1m long 500 Feedthrough Termination 500 BNC f to BNC m Here is the connecting between FLUKE 9500B and the oscilloscope under test FLUKE 9500B Picture 3 1 Connecting test instruments 18 SDS1000CML CNL DL Service Manual SIGLENT Verify Test Results To verify whether a test passes whether the readings are within the limits it is necessary for you to record the readings in the Performance Test on Test Record Self Test This internal procedure is automatically performed every time the oscilloscope powers on No test equipments are required Verify that no error messages are displayed before continuing with the procedure Self Calibration You must perform the Self Calibration operation described in chapter 2 If the environmental temperature changes by more than 5 C you must perform the Self Calibration operation again SDS1000CML CNL DL Service Manual 19 SIGLENT To verify DC Gain Accuracy DC Gain Accuracy error 1 Vpos Vneg Vsetting Vsetting lt 3 Note Vsetting represents DC voltage output level This test verifies DC Gain Accuracy of al
42. vice Manual SIGLENT Standard Accessories Two pieces 1 1 10 1 Passive Probes A Quick Start A Certification A Guaranty Card An CD including EasyScope3 0 computer software system A Power Cord that fits the standard of destination country An USB Cable General Care and Cleaning Care Do not store or leave the instrument in direct sunshine for long periods of time Notice To avoid damages to the instrument or probe please do not leave them in fog liquid or solvent Cleaning Please perform the following steps to clean the instrument and probe regularly according to its operating conditions 1 Disconnect the instrument from all power sources and then clean it with a soft wet cloth 2 Clean the loose dust on the outside of the instrument and probe with a soft cloth When cleaning the LCD take care to avoid scarifying it Notice To avoid damages to the surface of the instrument and probe please do not use any corrosive liquid or chemical cleanser Make sure that the instrument is completely dry before restarting it to avoid short circuits or personal injuries SDS1000CML CNL DL Service Manual 51 SIGLENT Replaceable Parts SIGLENT provides a list of replaceable parts for SDS1000CML CNL DL oscilloscopes Within the list you could exchange or purchase wanted modules for new manufactured Please see the following table for detailed information Table 7 1 Updating Parts Item
43. y Module Keypad Module Required Tools Use these tools to remove or replace the modules in the oscilloscope 16 T10 and T20 TORX drivers 5 8 inch and 9 32 inch socket drivers Flat head screw driver Disassembly Procedures This section describes how to remove and install the modules listed above in the oscilloscope in detail Complete disassembly will be best achieved through the following operating steps SDS1000CML CNL DL Service Manual 29 SIGLENT Removing the Front Panel Knobs Kr On Off button Big knob Small knob Figure 5 1 Removing the Front Panel Knobs Removing steps Remove each front panel knob by firmly grasping the knob with pliers if necessary and pulling it away from the front panel To install the Front Panel Knobs please operate as the reverse steps 30 SDS1000CML CNL DL Service Manual SIGLENT Removing the Rear Panel The rear panel handle The rear panel screw The rear panel Figure 5 2 Removing the rear panel Removing steps 1 Place the oscilloscope face down on a soft surface such as an anti static mat 2 Remove the four screws located on the rear panel Tilt the handle to gain better access to the top two screws 3 Lift the rear panel up and off carefully To install the rear panel please operate as the reverse steps SDS1000CML CNL DL Service Manual 31 SIGLENT Removing the Rear Metal Cover Rear metal cover screw
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