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DSO Series User Manual (2)

1. 24 Setting the Vertical System 25 Setting the Horizontal System 33 Setting the Trigger System 37 Alternate Trigger 41 Setting the Sampling System 45 Setting the Display System 47 DSO Series User Manual Item Chapter 3 DSO Series User Manual TENMA Storage and Recall 48 Utility Function SetUp 52 Automatic Measurement 55 Cursor Measurement 60 Using the Run Button 61 Practical Example Illustrations 0 2 220002 ence one 63 Illustration 1 Measuring simple signalS 63 Illustration 2 Observing the delay and time lapse caused by a sine wave signal passes through the circuit
2. 88 Top value 57 Save 48 Warranty eee 81 Signal source 31 Bandwidth suppression 27 Troubleshooting 79 Window extension 34 Display system 47 Display type 87 Standard accessories 87 TENMA Measuring simple signals 63 Sed td 21 Pulse width trigger 38 Language selection 55 Off AP eet 20 Using the RUN button 61 Horizontal system 20 Factory setup 53 Functional check 11 External trigger 38 Average 57 Average acauisition 31 Positive pulse width 40 POWE esos trat eee ee oes 87 Edge trigger
3. 45 Cursor measurement 60 Display system 47 Compulsory 23 Horizontal system 24 Mall 2223020252320 coi tas cla 30 Measurement 55 Preshoot 57 Storage 15 RUN STOP 62 Trigger system 22 Functions 25 Vertical system 25 Selectos sodas act li 6 DSO Series User Manual Coarse tune 25 Nyquist frequency 32 Realtime sampling 47 Top value 57 Bottomvalue 57 Technicalindicators 82 Waveform inversion 31 Waveform recording 54 Pulse trigger 85 Overshoot 2 2 42 socosa decidir a e en esses 57 Cleaning
4. Probe compensation signal output External trigger inputt USB Host signal input interface Figure 1 2 Schematic Diagram of the DSO Front Panel 13 DSO Series User Manual Displaying the horizontal trigger position Trigger status display Displaying the central graticule time SEs les Se 33 re Coupling cece tee a NARA IR n AS oc CH1icon gt i ey A Cr eT Caren eon See a The menu varies with y individual function keys PT A O ENS SO poe eee O S Waveform A display window Invert Close Displaying the vertical Displaying main graticule factor of the time base setup channel Figure 1 3 Schematic diagram of the display interface 14 DSO Series User Manual General Inspection We suggest checking your new DSO oscilloscope in the following steps 1 Check the unit for possible shipping damages If the package carton or foam plastic protective lining is seriously damaged please arrange for exchange immediately 2 Check the accessories A checklist of accessories that come with your DSO oscilloscope is provided in the section Accessories for DSO Series Digital Storage Oscilloscope of this user manual Please check any missing items against this list If any item is missing or damaged please contact your Tenma dealer or our local office 3 Thorough inspection ofthe entire unit If the exterior of the unit is damaged or it is not operating normally or
5. 64 Illustration 3 Acquiring single signals 220 255 65 Illustration 4 Reducing random noise of signals 66 Illustration 5 Using the cursors for measurement 68 Illustration 6 Using the X Y function 69 Illustration 7 Using the USB upgrade programme 70 Illustration 8 Screen COpy 2a nnn nee ene gt 78 TENMA 10 Item Chapter 4 Chapter 5 System Prompts and Trouble sho0ting 79 Definitions of System Prompts ne ence nena 79 Troublesho0ting oo 79 Technical Indicators 81 AppendixA Technical indicatorS 81 Appendix B Accessories for DSO Series Digital Storage Oscilloscope 87 Appendix C Maintenance and Cleaning 87 e 88 DSO Series User Manual DSO Series User Manual Chapter 1 User Guide Your DSO Series digital storage oscilloscope is a small and compact benchtop device The user friendly front panel enables easy operation This chapter will guide you through basic testing steps This chapter provides notes on the following General inspection Functional check Probe compensation Automatic setups for waveform display Getting to
6. Function Menu Setup Explanatory Note Type Math Tocarry out x functions Source 1 Ch1 Set signal source 1 as CH1 waveform Ch2 Set signal source 1 as CH2 waveform Operator Signal source 1 Signal source 2 Signal source 1 Signal source 2 x Signal source 1 x Signal source 2 Signal source 1 Signal source 2 Source 2 Ch1 Set signal source 2 as CH1 waveform Ch2 Set signal source 2 as CH2 waveform FFT spectrum analysis By using the FFT Fast Fourier Transform algorithm you can convert time domain signals YT into frequency domain signals With FFT you canconveniently observe the following types of signals O Measure the harmonic wave composition and distortion of the signal 0 Measure the noise characteristics ofthe DC power e Analyse oscillation TENMA DSO Series User Manual Table 2 3 Explanatory notes for the FFT menu Select the FFT Window Function Menu Setup Explanatory Note Assuming the YT waveform is constantly repeating itself the Type FFT To carry out FFT algorithm oscilloscope will carry out FFT conversion of time record of a limited eE length When this cycle is a whole number the YT waveform will have Source Ch1 Set CH1 as math waveform e n y Ch2 Set CH2 as math waveform the same amplitude at the start and finish There is no waveform Window Hanning Set Hanning windowfunction interruption However if the YT waveform cycle is not a whole number Hamming Set Hamming wind
7. Triggerlevel Set at 50 Triggermode Auto Triggersource Set to CH1 but if there is no signal in CH1 and CH2 applies a signal it will set to CH2 Triggerinclination Rising Triggertype Edge Vertical bandwidth Full VOLT DIV Adjust according to amplitude of the signal 62 DSO Series User Manual RUN STOP Acquire waveform continuously or stop acquisition If you want the oscilloscope to acquire waveform continuously press RUN STOP once Press the button again to stop acquisition You can use this button to switch between acquiring and stop acquiring waveform Inthe Run mode a green light comes on and AUTO appears on the screen In the STOP mode a red light comes on and STOP appears onthe screen DSO Series User Manual Chapter3 Practical Example Illustrations Illustration 1 Measuring simple signals To observe and measure an unknown circuit signal and to quickly display and measure the signal s frequency and peak to peak value 1 To quickly display this signal follow the steps below Inthe probe menu set the attenuation factor to 10X and set the switch on the probe to 10X 2 Connect the CH1 probe to the circuitry point to be measured Press AUTO The oscilloscope will carry out auto setup to optimise waveform display In this status you can further adjust the vertical and horizontal range until you get the desired waveform display 2 Voltageand time paramete
8. 37 Alternate trigger 37 Cursor measurement 60 Tracking E E OOO cece ieee decease 61 Screen design 54 Input channel 43 Storage andrecall 48 TENMA Trigger coupling 22 Mechanical specifications 87 Automatic setup 80 Automatic measurement 55 Automatic trigger 65 Selfcalibration 55 Holdoff 2221 24 elec iis et ee anta 33 Negative pulse width 40 Root mean square value 57 Peakmeasurement 45 Peak to peak 56 Acquiring single signals 65 Retall s2ies2222 sess ste sss ese eset eae titi 48 Range adjustment 29 Delayed measurement 64 Channel setup 28 Channel coupling 26 Pretrigger 44
9. TENMA Average value Average amplitude of signals within 1 cycle Root mean square value Vrms The effective value Energy generated by AC signal conversion during 1 cycle with respect to the DC voltage that produces equivalent energy i e root mean square value Automatic measurement of time parameters Your DSO Series Oscilloscope can automatically measure the frequency cycle rising time falling time positive pulse width negative pulse width delay 1 2 rising edge delay 1 2 falling edge positive duty ratio negative duty ratio and 10 time parameters Definitions of these parameters are as follows RiseTime The time taken by the waveform amplitude to rise from 10 to 90 FallTime The time taken by the waveform amplitude to fall from 90 to 10 Positive Pluse Width Width The pulse width when positive pulse is at 50 amplitude Negative Pluse Width Width The pulse width when negative pulse is at 50 amplitude 57 TENMA Delay 12 Rising edge Delayed time of therisingedgeofCH1 Table 2 23 Ch2 DSO Series User Manual Function Menu Setup Explanatory Note Delay 12 Falling edge Delayed time of the falling edge of Back Returnto the parameter measurement Ch1 Ch2 display menu Positive duty ratio Duty Ratio of positive pulse width to cycle Source Ch n a e iy for parameter Negative duty ratio Duty Ratio of negative pulse width to cycle Ch2 Select the cha
10. lt CH Coupling oc BW Li Volts Div Off M100ns CHT 0 00mi Vertical range movement Figure 2 6 Setting the probe attenuation factor in the channel menu DSO Series User Manual 4 Vertical VOLTS DIV adjustment setup You can adjust the VOLTS DIV range of the vertical deflection factor either in the coarse tune mode or fine tune mode In COARSE TUNE mode the VOLTS DIV range is 1mV div 20V div Tuning is in steps of 1 2 5 In FINE TUNE mode you can change the deflection factor in even smaller steps within the current vertical range so as to continuously adjust the vertical deflection factor within the range of 1mV div 20V div without interruption Finetune setup Figure 2 7 Coarse tuning and fine tuning the vertical deflection factor TENMA 5 Waveform inversion setup Waveform inversion The displayed signal is inverted 180 degrees with respect to the ground level Figure 2 8 shows the non inverted waveform Figure 2 9 shows the inverted waveform Chi 500n Math Off Figure 2 9 Inversion setup for vertical channel inverted 29 TENMA l Operating Math Functions Math functions are displays of x and FFT mathematical results of CH1 and CH2 waveforms The menuis as follows Hath Type Hath Operator Cha 2 004 M Mathrange Figure 2 10 Math functions 30 DSO Series User Manual Table 2 2 Explanatory notes for the Math menu
11. CH2 trigger signals alternately When gt Triggerwhen pulse width is larger than default value lt Triggerwhen pulse width is smaller than default value Triggerwhen pulse width equals to default value Setting 20ns 10s Set the pulse width at 20ns 10s and adjust by turning the multifunction control knob on the upper front panel Next Move to nextpage 39 TENMA DSO Series User Manual Table 2 8 Function Menu Setup Explanatory Note Type Pulse Polarity Positive Set positive pulse width as the trigger signal Negative Set negative pulse width as the trigger signal Mode Auto The system automatically samples waveform data when there is no trigger signal input The scan baseline is shown on the display When the trigger signal is generated it automatically turns to trigger scan Normal The system stops acquiring data when there is no trigger signal When the trigger signal is y generated trigger scan occurs Single Onetrigger scan will occur when there is an input trigger signal Then trigger will stop Coupling DC AllowAC and DC quantities of the trigger signal to pass AC Intercept DC quantities of the trigger signal HF Reject Intercept high frequency quantities of the signal only allow low f frequency quantities to pass LF Reject Intercept low frequency quantities of the signal only allow high frequency quantities to pass Next page2 2 Return to previous page 40 TENMA DSO Series User M
12. Math Off MICH 31 2mv Figure 3 3 Single signal 66 DSO Series User Manual Illustration 4 Reducing random noise of signals If the signal being measured is stacked with random noise you can adjust the setups of your oscilloscope to filter or reduce the noise so it will not cause interference to the signal during measurement Waveform is shown below MPos 0004 er Acquire Mode Sample Sampling Equ time Fasticq OFF w Ch2 _ Off a CHI Figure 3 4 Reducing random noise of signals Steps 1 As in the previous illustration set the attenuation factor of the probe and Ch1 2 Connectthe signal to ensure stable display of waveform See the previous illustration for operation instruction See the previous chapter for guidance on adjusting the horizontal time base and vertical range DSO Series User Manual 3 Improvingtrigger by setting trigger coupling Press TRIG MENU in the trigger zone to display the trigger setup menu Set TRIGGER COUPLING to LOW FREQUENCY SUPPRESSION or HIGH FREQUENCY SUPPRESSION By selecting low frequency suppression a high pass filter is set up It filters low frequency signal quantities under 80kHz and allows high frequency signal quantities to pass through If you select high frequency suppression a low pass filter is set up It filters high frequency signal quantities higher than 80kHz and allows low frequency signal quantities to pass through By settin
13. measurement type of any zone press the corresponding function key to enter the type option menu 55 TENMA The measurement type option menu lets you choose voltage or time You can enter the voltage or time measurement by pressing F1 F5 for the corresponding type and then return to the parameter measurement display menu You can also press F5 and select ALL PARAMETERS to show all measurement parameters of both voltage and time Press F2 to select the channel measurement is carried out only when the channel is enabled If you do not wish to change the current measurement type press F1 to return to the parameter measurement display menu Example 1 To display the measurement peak to peak value of CH2 in the F1 zone follow the steps below 1 Press F1 to enterthe measurement type option menu 2 Press F2 to select channel 2 3 Press F3 to select voltage 4 Press F5 1 4 next page and you will see the peak to peak value atposition F3 5 Press F3 to select peak to peak value and then automatically return to the parameter measurement display menu On the first page of the measurement menu peak to peak value is displayed in zone F1 56 DSO Series User Manual Example 2 Setup for delayed measurement You can use the delayed measurement function to measure the time interval between the rising edge of two signal source i e the time interval between the rising edge of the first cycle
14. French Cymometer ON Frequency counterison m OFF Frequency counter is off Next page 1 3 Go to the next page Firstpage 3 3 Return to thefirst page 53 TENMA Table 2 21 Waveform record menu 1 Press UTILITY to enter DSO Series User Manual Table 2 22 Waveform record menu 2 Press OPERATION to enter See the above table 54 Function Menu Setup Explanatory Note Function Menu Setup Explanatory Note Source Ch1 Select CH1 as the recording signal Record F1 Record button Press this button to source record The number of screens Ch2 Select CH2 as the recording signal recorded is displayed at the bottom source of the screen CH1 CH2 Select CH1 CH2 as the recording Replay F2 1 Playback button signal source eplay F2 2 When you press this button the Operation Enter the next page for the system plays back The recording operation menu as number of the screen being shownin Table 2 22 played is displayed in the Save 1 30 Select the save position for USB bottom right corner By turning waveform recording the multifunction control knob E on the upper front panel you Load 1 30 Select the recall position of the can suspend playback Turn USBwaveform the knob further and you can Return 5 Return to the first page select the waveform ofa certain screen to be played back repeatedly 3 If you wish to continue full playback press F3
15. Reducing signal random noise 66 Probe compensation 18 Probe rate lt e 2 e222 sio eee eee ee se 28 90 DSO Series User Manual Sampling system 45 Coarse tune fine tune 61 Utility system functions 52 Maximum value 57 Minimum value 57 Equivalent sampling 47 Contact us 81 Math 30 Trigger level 37 Trigger setup 22 Trigger system 22 Hold off 33 TENMA DSO Series User Manual Copyright 2010 Tenma All rights reserved Manufacturer Tenma 405 S Pioneer Blvd Springboro Ohio 45066 3001 Phone 1 888 655 5409 This user manual may be revised without prior notice 81
16. band of waveform to check image details Please refer to Figure 2 13 DSO Series User Manual Horizontal extension of the waveform Window Time base extension Hold off Chi MET Ch2 Off Ons Wath Off ECH O D 100 00ns Horizontally extended partofthe waveform l Figure 2 13 Display with the window extended In the time base extension mode the display is divided into two zones as shown above The upper part displays the original waveform You can move this zone left and right by turning the horizontal POSITION knob or increase and decrease the selected zone in size by turning the horizontal SCALE knob The lower part is the horizontally extended waveform of the selected original waveform zone Please note that the recognition rate of extended time base relative to the main time base is now higher as shown in the above figure Since the waveform shown in the entire lower part corresponds to the selected zone in the upper part you can increase the extended time base by turning the horizontal SCALE knob to decrease the size of the selected zone In other words you can increase the multiple of waveform extension X Y Mode This mode is suitable for CH1 and CH2 only After selecting the X Y display mode the horizontal axis will display CH1 voltage while the vertical axis will display CH2 voltage WaveBright 2 100 Chi Ch2 500mY ENTES Math Off XY mode Figure 2 14 Waveform display in X Y mod 3
17. it fails to pass the performance test please contact your Tenma dealer or our local office Inthe event of any shipping damages please retain the packaging and notify our shipping department or your Tenma dealer We will be glad to arrange maintenance or repair TENMA Functional Check Carry out a quick functional check in the following steps to make sure your oscilloscope is operating normally 1 Power on the unit Power on the unit AC power supply voltage range is 100V AC to 240V AC frequency 45Hz 440Hz After connecting to power start the self calibration process on the optimal oscilloscope signal path at greatest measurement accuracy Press the UTILITY button and F1 then press F5 to go to the next page and press F1 To recall DEFAULT SETUP see Figure 1 4 After completing the above steps press CH1 to enter the CH1 menu 15 TENMA DSO Series User Manual 2 Accessing signals Power switch Your DSO oscilloscope has dual input channels and an external J trigger input channel Please access signals in the following steps Connect the probe of the digital storage oscilloscope to the CH1 input terminal and set the attenuation switch of the probe to Function 10X Figure 1 5 key Figure 1 4 N Warning To avoid danger ensure the digital storage oscilloscope is safely grounded Figure 1 5 Setting the attenuation switch of the probe 16 DSO Series User Manual Y
18. know the vertical system Getting to know the horizontalsystem Getting to know the trigger system When beginning to use your DSO oscilloscope first familiarize yourself with the front panel This chapter briefly describes the operation and functions of the front panel so you can get started with your DSO series digital storage oscilloscope as quickly as possible Your DSO oscilloscope comes with a front panel with at a glance functions for easy operation There are knobs and function keys on the TENMA front panel The functions of knobs are similar to other Oscilloscopes On the right you will find the screen copy key PrtSc which enables you to save the current screen in an external USB device in picture format and five menu operation keys designated as F1 to F5 from top down With these keys you can set up different options of the current menu The other keys are function keys You can use them to enter different function menus or access particular functions directly 11 TENMA DSO Series User Manual i SECO cH2 EXTTRIG zy Echi Figure 1 1 DSO Series Digital Storage Oscilloscope 12 TENMA Multifunction Frequently Operation controlknob UsedMenus controls DSO Series User Manual 100MHz 1GS s DIGITAL STORAGE OSCILLOSCOPE Trigger controls Horizontal controls Vertical controls
19. not displayed press the CH1 and CH2 menu button to enable the two channels 4 Press AUTO 5 Adjustthe vertical scale knob to make the displayed amplitude of the two channels to about equal 6 Press the DISPLAY menu key to recall the display menu 7 Press F2 to select X Y The oscilloscope will display the circuit s input and output characteristics ina Lissajous figure 8 Adjust the vertical scale and vertical position knob to achieve the best result of waveform 9 Using the elliptic oscilloscope display graph to observe measure TENMA and calculate the phase difference see the figure below Signal mustbe horizontally central ing Ape If sind B D Bis the angle of disparity between the channels For definitions of A B C D see the above figure Calculating with this formula the angle of disparity is 9 tarcsin A or O arcsin If the elliptic main axis is within quadrants and III the angle of disparity shouldbe within quadrants and IV i e inside oD or 3m 271 Ifthe main axis is within quadrants II and IV the angle of disparity should 3T be within quadrants II and III i e inside E T or ms 69 TENMA Furthermore if the frequencies and phase differences of two signals being measured are whole multiples you can calculate the frequency and phase correlation between the two signals 10 X YPhase difference table X Y Frequency ratio Z AE E LA y
20. pressed Restart the unit after performing the above checks If the unit still fails to work contact Tenma to request service If no waveform is displayed after you have acquired a signal follow the steps belowto find the cause Check whether the probe is properly connected to the signal lead Check whether the signal lead is properly connected to the BNC channel adaptor Check whether the probe is connected properly to the object to be measured Check whether the object for measurement is generating signals connect the channel with signals to the questionable channel to find the cause Restart the acquisition process 79 TENMA 80 The measurement voltage amplitude value is 10 times larger or smaller than the actual value Check if the channel attenuation factor corresponds with the probe attenuation you have chosen Thereis waveform display butitis not stable Check the TRIGGER SOURCE setup in the trigger menu See whether it is the same as the actual signal input channel 2 Check the trigger type Use EDGE TRIGGER for ordinary signals and VIDEO TRIGGER for video signals Stable waveform display is achieved only when the correct trigger mode is selected Try changing the COUPLING display to HIGH FREQUENCY SUPPRESSION or LOW FREQUENCY SUPPRESSION to filter any high or low frequency noise thatis interfering with triggering No display after pressing RUN STOP Check if the TRIGGER M
21. probe do not use abrasive chemical cleaner Warning To avoid short circuit or personal injury due to the presence of moisture please ensure the product is completely dry before reconnecting power for operation 87 TENMA Index Alphabet DSO sises Shs Sse sses Fes Pest ss es PSS AE SSE aes 50 EXT cate set a iii aia 43 FFT resolution 33 FFT frequency analysis 61 USB Estare 11 X Ymode 34 Y T MODO 22 Hen ee cesses eee 34 Negative duty ratio 57 Positive duty ratio 58 AmplitUde lt lt cce conectan adi 57 Mean sodas ordeno 57 General check 15 General care 88 Risetime 59 Fallltim s lt gt 20200 iodo ve cee se cee ces 57 System prompts 79 88 DSO Series User Manual Refresh rate 48 Single trigger 44 Gydl 2h2Ss2sS Hist a edie eee 31 Vertical system 19 GNid S 2seererteneser seme setemon dressers hers em ese 38 Acquisition
22. the multifunction control knob then press F4 storage key to complete the storage process Figure 3 22 Copying a screen on to the USB device Note When the USB device is plugged into DSO the graphic will be stored on the USB directly 78 DSO Series User Manual Chapter 4 System Prompts and Trouble shooting Definitions of System Prompts Adjustment at Ultimate Limit This informs you that the multifunction control knob has reached its adjustment limit in the current status No further adjust is possible When the vertical deflection factor switch time base switch X shift vertical shift and trigger level adjustments have reached their ultimate limits this prompt will appear USB Device Installed After a USB device is plugged into the oscilloscope this prompt appears when the connection is valid USB Device Unplugged After a USB key is unplugged from the oscilloscope this prompt appears Saving When the oscilloscope is saving a waveform this prompt is shown on the screen Aprogress bar appears atthe bottom Loading During waveform recall this prompt is shown on the screen Aprogress bar appears at the bottom TENMA Troubleshooting af If the screen of your oscilloscope remains black without any display after powering on follow the steps belowto find the cause Checkthe power cable connection and check if there is normal power supply Check if the power switch is properly
23. 3 3kg IP Protection IP2X Power Source Source Voltage 100 240VAC pus 45 440Hz CAT II Adjustment frequency Power Consumption Lessthan 30VA Recommended calibration frequencyis 1 year Fuse F1 6AL250V DSO Series User Manual Appendix B Accessories for DSO Series Digital Storage Oscilloscope Standard Accessories E Two 1 2m 1 1 10 1 passive voltage probes For details please read the probe manual EN61010 031 2002 standard Ratingis 150V CAT II whenthe switch is in the 1X position Rating is 300V CAT II when the switch is inthe 10X position Oneinternational standard power cord One User Manual DSO communication amp control software USB connection cable UT DO5 Appendix C Maintenance and Cleaning General Care Do not store or leave the oscilloscope where the LCD display will be exposed to direct sunlight for long periods of time Caution To avoid damage to the oscilloscope or probes do not expose them to sprays liquids or solvents Cleaning Inspect the oscilloscope andprobes as often as operating conditions require To clean the exterior surface followthese steps 1 Remove duston the outside of the oscilloscope and probes with a softcloth When cleaning the LCD use care to avoid scratching the clear protection film of the LCD 2 Use adampened but not dripping soft cloth to clean the oscilloscope Remember to disconnect power Use a mild cleaner or water To avoid damaging the product or
24. 5 TENMA Caution In the normal X Y mode the oscilloscope can use the random sampling rate to acquire waveforms To adjust sampling rate and channel vertical range in the X Y mode and to adjust the time range the omitted sampling rate is 100MS s Generally lowering the sampling rate appropriately will result in lissajous figures of better display quality The following functions have different effects in the X Y display mode Automatic measurement mode Cursor measurement mode Reference ormath waveform Vector display type Horizontal MENU knob Triggercontrol 36 DSO Series User Manual DSO Series User Manual Setting the Trigger System Triggering decides when the oscilloscope collects data and display waveforms Once the trigger is correctly set up it can transform unstable displays into meaningful waveforms When beginning to acquire data the digital storage oscilloscope first collects sufficient data required for drawing a waveform on the left side of the trigger point While waiting for the trigger condition to mature your oscilloscope will acquire data continuously When trigger is detected it will continue to acquire sufficient data to draw a waveform on the right side of the trigger point The trigger control zone on the operation panel of your oscilloscope comprises a trigger level adjustment knob a trigger menu button TRIG MENU the SET TO ZERO button for setting the trigger level to the vertical cen
25. BLACK TENMA 72 8710 72 8705 OPERATING MANUAL TENMA 72 8710 10MH 165 ta aron Digital Storage Oscilloscope Introduction Dear valued customer Thank you for purchasing a Tenma instrument To use your new product correctly make sure you read this User Manual carefully and completely before operation and pay particular attention to the Safety Instructions section Please keep this User Manual in a safe place after reading it carefully For easy reference during future operation we recommend putting it alongside your Tenma product or in an easily accessible place TENMA DSO Series User Manual Copyright Information O TENMA Tenma All rights reserved O TENMA productsare protected by patents granted and pending in the People s Republic of China and other countries The Company reserves the right to change product specifications and prices TENMA all rights reserved All licensed software products are properties of Tenma its subsidiaries or suppliers They are protected by the national copyright law and international conventions Information contained in this manual supercedes all information in previously published versions TENMA is the registered trademark of Farnell TENMA If this product is sold or assigned by the original purchaser to a third party within three years of purchase the new owner should note that warranty is available for a period of three years from the day the ori
26. Display menu Function Menu Setup Explanatory Note Type Vector Sampling points are linked for display Only sampling points are displayed Format YT Operating mode of the oscilloscope XY X Y is the display mode CH1 is X input CH2 is Y input Persist Close The waveform on the screen is refreshed ata fast rate 1s The waveform on the screen is refreshed at1s 2s The waveform on the screen is refreshedat 2s 5s The waveform on the screen is refreshed ata 5s Infinite The original waveform on the screen remains on display New data will be added continuously until this function is disabled WaveformBright 1 100 Setting the waveform brightness Key points Display Type Vector dots fill the space between adjacent sample points in the display Dots display only the sampling points 48 DSO Series User Manual Storage and Recall As shown below the STORAGE button in the MENU control zone is the function key for the storage system MULTI PURPOSE 0G x kien rat CURSOR DISPLAY UTILITY PUSH SELECTED Figure 2 21 Function key forthe sampling system storage Pressthe STORAGE button to display the storage setup menu You can use this menu to save waveforms or setup status of the oscilloscopein the internal memory or the USB device and recall any stored waveform through RefA or RefB or press STORAGE to recall the setup status When the USB device is inserted you can store the oscillos
27. E MS EY AV Ae E 22 30 45 90 135 180 ADN VU NV 90 120 Phase 15 1 60 mw wv w VV y 1 45 CD e a 67 30 90 70 DSO Series User Manual Illustration 7 Using the USB upgrade program The USB upgrade program makes upgrade easier and more flexible To use this function followthe steps below 1 Check the model name software and hardware versions ofyour oscilloscopein Table 2 19 2 Download the highest version of the update program document that matches your model software and hardware versions online and store it on the USB device preferably a USB device recommended by us 3 Power off the oscilloscope then insert the USB device Then power on the oscilloscope again The prompt Please press F5 to continue or F1 to cancel appears on the screen as shown in the figure on the right DSO Series User Manual Program Update System TENMA D Knob Matia F1 Cancel F5 0K Figure 3 8 USB update confirmation After pressing F5 the screen will prompt you to select the update program as shown in the following figure You can now select the required update program with the multifunction control knob then press F5 to move to the next step If there is only one program on the USB device the following screen will not appear The system will move straight to the next step Figure 3 9 Selection of the USB upgrade document 4 When F5 is pressed as
28. IGGER LEVEL TRIG MENU FORCE Setting the sampling method ACQUIRE Setting the display mode DISPLAY Storage andrecall STORAGE DSO Series User Manual Setting the help system UTILITY Automatic measurement MEASURE Cursor measurement CURSOR Using the execution buttons AUTO RUN STOP ltis recommended that you read this chapter carefully to understand the various measurement functions and system operation steps of your DSO Series oscilloscope TENMA DSO Series User Manual Setting the Vertical System Table 2 1 Explanatory notes for channel menu CH1 CH2 and setups Function Menu Setup Explanatory Note Each vertical channel has its own vertical menu You should set up each item for each channel individually Press the CH1 or CH2 function Coupling AC do DC quantities of the button and the system will display the operation menu for CH1 or DC Pass AC and DC quantities of CH2 For explanatory notes please see Table 2 1 opposite input signal GND Disconnect input signal BW Limit Open Limit bandwidth to 20MHz to reduce noise display Close Full bandwidth Volts Div Coarse Coarse tune in steps of 1 2 5 to set up the deflection factor of the vertical system Fine Fine tune means further tuning within the coarse tune setup range to improve the vertical pixel aspect ratio Probe 1x Select either one value based on 10x the probe attenuation factor to 100x keep the
29. ODE is set to NORMAL or SINGLE in the menu and whether the level exceeds the waveform range If so move the trigger level to the centre or set TRIGGER DSO Series User Manual MODE toAUTO 2 Press AUTO to complete the automatic setup Display speed is slow after average sampling timeis enabled _ If average sampling is carried out for more than 32 times the display speed will drop This is normal 2 Youcanreduce the intervals of average sampling Trapezoidal waveform display _ This is normal The reason is possibly horizontal time base range is too low You can improve horizontal pixel aspect ratio and enhance the display quality by increasing the horizontal time base If the display type is VECTOR the connection between sampling dots may cause a trapezoidal waveform Set the display type to DOT to solve this problem TENMA DSO Series User Manual Chapter 5 Appendixes Technical Indicators Sampling Appendix A Technical Indicators Sampling modes 72 8710 72 8705 ae Real time sampling 1GS s Unless otherwise specified all technical specifications apply to probes Equivalent sampling 50GS s with attenuation setting of 10X and the DSO Series Digital Bandwidth 100MHz 50MHz Oscilloscope To verify that your oscilloscope meets specifications it Sampling Sampling peak detect average must first meetthe following conditions Average value When all channels have made N samplings simulta
30. Table 2 28 Function Measurement Explanatory Note Function Measurement Explanatory Note Previous Return to the previous page Back Return to the previous page High Select to return to the parameter Freq Select to return to the parameter measurement display menu and measurement display menu and replace the original parameter in that replace the original parameter in that position position Low Ditto Period Ditto Middle Ditto Rise Ditto Next 3 4 Turn page Next 1 3 Turn page 59 TENMA Table 2 29 Function Measurement Explanatory Note Previous Return to the previous page Fall Select to return to the parameter measurement display menu and replace the original parameter in that position Width Ditto Width Ditto Next 2 3 Turn page Table 2 30 Function Measurement Explanatory Note Previous Return to the previous page Delay Select to enter the delay option menu as shown in Table 2 31 Duty Select to return to the parameter measurement display menu and replace the original parameter in that position Duty Ditto Next 3 3 Return to page 1 as shown in Table 2 28 60 DSO Series User Manual Table 2 31 Function Menu Setup Explanatory Note From Channel CH1 CH2 MATH Select the reference channel To Chamnel CH1 CH2 MATH Selectthechannelto be measured OK Select to return to the parameter measurement display menu and
31. anual Alternate Trigger When alternate trigger is selected the trigger signal will be present in two vertical channels This triggering mode is suitable for observing two Table 2 9 Alternate trigger mode setup signals of unrelated signal frequencies The figure below shows the Function Menu Setup Explanatory Note alternate trigger waveform Alternate trigger menu is listed in Table 2 9 Type Edge Set trigger mode to edge Source Alter Open time base extension H Pos 0 0015 wr Trigger Inclination Rise Set trigger inclination as rising edge Mode Auto Set trigger mode to automatic Coupling AC Set trigger coupling mode to AC Node Alternate trigger can also be used to compare pulse width Auto Coupling Ch2 1004 VENE Ac TA Figure 2 15 Observing two signals of different frequencies in the alternate trigger mode 41 TENMA Setup for Trigger coupling mode Adjusting the Holdoff Time Enter the trigger setup menu to set up the trigger coupling mode and voy can adjust the holdoff time to observe complicated waveforms e g achieve the most stable synchronization The trigger coupling menu is pulse string series Holdoff time means the waiting time for the trigger DSO Series User Manual as follows circuit to be ready for use again when the oscilloscope is restarted During this time the oscilloscope will not trigger until the holdoff is Table 2 10
32. atically turns to trigger scan for signal synchronization Note When time base of the scan range is set to 50ms div or slower the Auto mode allows no trigger signal mg Normal Trigger In this mode your oscilloscope samples waveforms only when triggering conditions are met The system stops acquiring data and waits when there is no trigger signal When the trigger signal is generated trigger scan occurs E Single Trigger In this mode you only have to press the Run button once and the oscilloscope will wait for trigger One sampling will occur and the acquired waveform will be displayed when the digital storage oscilloscope detects a trigger Then trigger will stop Trigger coupling Trigger coupling determines which quantities of the signal are transmitted to the trigger circuit Coupling modes are DC AC low frequency suppression and high frequency suppression DSO Series User Manual Trigger coupling Trigger coupling determines which quantities of the signal are transmitted to the trigger circuit Coupling modes are DC AC low frequency suppression and high frequency suppression mg DC Allowing all quantities to pass mg AC Intercepting DC quantities and attenuating signals under 10Hz m Low Frequency Suppression Intercepting DC quantities and attenuating low frequency quantities under 80kHz m High Frequency Suppression frequency quantities over 80kHz Pretrigger Delayed Trigger Data sampled before a
33. base i e s div When time base A Window Open time base extension extension is on you can use the horizontal scaling knob to change the window width For details see notes on time base extension Holdoff Adjust holdoff time Horizontal control knob menu Display the horizontal menu see the table below Figure 2 11 Horizontal system control zone 33 TENMA Icon definitions 600 34 The distance between the triggering position and horizontal centre point time Represents the memory position ofthe triggering point Represents the trigger level of the current waveform Horizontal time base main time base i e s div BW Limit Figure 2 12 Display of horizontal parameters DSO Series User Manual Definitions Y T Mode In this mode the Y axis indicates voltage and the X axis indicates time X Y Mode In this mode the X axis indicates CH voltage and the Y axis indicates CH2 voltage Slow Scanning Mode When horizontal time base control is set at 50ms div or slower the unit will operate in the slow scan sampling mode When observing low frequency signals in slow scanning mode it is advised to set the channel coupling as DC S div A horizontal scaling time base unit If waveform sampling is stopped by pressing the RUN STOP button time base control can expand or compress the waveform Window Extension Window extension can be used to zoom in a
34. changes of any vertical range by reading the As shown inthe figure below there are one button and two knobs in the status display column at the lower corner of the waveform horizontal control zone The following steps will get you familiar with window Turn the vertical SCALE knob to change the vertical horizontal time base setup DSO Series User Manual VOLT DIV range You will find that the range in the HORIZONTAL corresponding channel has changed accordingly Press CH1 4 POSITION gt CH2 or MATH and the screen will show the corresponding Gp operation menu sign waveform and range status information Press the corresponding button for the currently activate channel again to close the selected channel SEC DIV Figure 1 10 Horizontal control zone on the front panel 20 DSO Series User Manual Use the horizontal SCALE knob to change the horizontal time base range setup and check any changes in time base range Tum the horizontal SCALE knob to change the SEC DIV time base range You will find that the time base range in the current status column has changed accordingly Range of horizontal scanning rate is 2ns 50s in steps of 1 2 5 Note Horizontal scanning time base range of the DSO Series varies from model to model Use the horizontal POSITION knob to adjust the signal s horizontal position of the waveform window The horizontal POSITION knob controls trigger shift of the signal When this function i
35. complete For example if you wish to trigger one group of pulse series at FFTWindow Feature Most Suitable Measurement Item me first pulse set the holdoff time to the pulse string width as shown in Figure 2 16 For holdoff menu please see the table below Type Edge Source Alter Set CH1 an CH2 to alternate trigger Table 2 11 Slope Rise i inati isi gt p i Set trigger Inclination as rising edge Function Menu Setup Explanatory Note Mode Auto Set trigger mode to automatic Main 3 1 Enable main timebase Coupling DC Intercept DC quantities to pass 2 If window extension is enabled AC Allow all quantities to pass press main time base to disable HF Reject Intercept high frequency quantities window extension of the signal only allow low frequency quantities to pass LF Reject Intercept low frequency quantities Window Enable time base extension of the signal only allow high Ez frequency quantitiesto pass Hold off Adjust holdoff time 42 DSO Series User Manual TENMA 3 Adjust the multifunction control knob in the upper front panel The holdoff time will change accordingly until the waveform H Pos 000s display is stable Trigger Definitions position Holdoff time Figure 2 16 Use the holdoff function to synchronize complicated waveforms Operation 1 Follow the normal signal synchronization procedure and select the edge trigger source and inclination in TRIG MENU Adjust the trigger l
36. cope s waveform display in bitmap format on the USB device under the DSO directory The bitmap can be read in a PC Operation steps Press STORAGE to go to the type menu There are three types to choose from waveform setup and bitmap 1 Select waveform to go to the waveform storage menu shown below see Figure 2 16 Astored waveform canbe recalled with the call back function under waveform storage DSO Series User Manual Table 2 14 Waveform storage menu page 1 Function Menu Setup Explanatory Note Type Wave Select the waveform storage and recall menu Source CH1 CH2 Selected signalis from CH1 Selected signalis from CH2 Dest 1 20 1 200 Turn the multifunction control knob to set the waveform storage position on the internal memory Set the waveform storage position on the USB device This function can be enabled only when the USB device is plugged in and the disk menuissetto USB Save Store the waveform Next page1 2 Go to the next page TENMA Chi ARA Math Off Figure 2 22 Storing the waveform 49 TENMA DSO Series User Manual Table 2 15 Waveform storage menu page 2 Function Menu Setup Explanatory Note Disk DSO Select the internal memory of the REN oscilloscope USB Select the external USB This function can only be used with the USB key plugged in Load Lenght Normal Select normal storage depth Long S
37. e reboot To resume normal operation power onthe oscilloscope with the USB device unplugged Program Update System Figure 3 17 USBdevice is removed before update 75 4 76 Incorrect update document If the version of the update document on the USB device is incorrect update will fail upon selecting the upgrade document by pressing F5 Figure 3 18 You will see the prompt Incorrect upgrade document Save a correct document on the USB device and repeat the previous steps for upgrade Program Update System Failure in reading update document After selecting the update document press F5 to read If the document cannot be read you will see the prompt Sorry upgrade has failed Please contact our after sales service department It may be that our oscilloscope does not support your USB device or document reading is unsuccessful due to other reasons You can retry and see if the problem can be solved or use a USB device we recommend If the problem persists contact our after sales service department To resume normal operation power off your oscilloscope and then reboot Program Update System Figure 3 18 Incorrectupdate documentversion Figure 3 19 Reading failure DSO Series User Manual Low software version If the version of USB document is lower than that of the oscilloscope update will fail You will be prompted that Software version too low Please read the user manual fo
38. elect long storage depth Note this function can only be activated when the USB device is plugged in Data stored in a USB key can only recalled with the waveform loading Normal soom GBB otf UM 200n gt function of the DSO Series Math Off f 0 00mY computer test and control software Load Recall the waveform Figure 2 23 Storing a waveform on the USB Previous 2 2 Return to the previous page 50 TENMA Table 2 16 Setting the storage menu DSO Series User Manual 2 Forthesetup storage menu see Table 2 16 Trig d H Pos 0 00us Setup Function Menu Setup Explanatory Note be Setup Select the front panel setup menu Setups 1 20 Maximum 20 front panel setups can be storedwith the multifunction control knob on the front panel 1 200 Set the waveform storage position on the USB device This function can be enabled only when the USB device is plugged in and the disk menuissetto USB Save Store the setting Recall Recall the setting 500mY Math Off Figure 2 24 Storage setup 51 TENMA 3 Select bitmap to enter the bitmap storage menu See Table 2 17 Note This function can be enabled only when the USB device is plugged in Table 2 17 Bitmap storage menu Function Menu Setup Explanatory Note Bitmap Select the bitmap menu Dest 1 200 Maximum 200 bitmap data can be stored Select with the mult
39. ell connected to the probe Connect the probe tip to the output terminal of the probe compensator s signal connector and the groundclamp tothe ground cable connector of the probe compensator Activate CH1 then press AUTO 2 Observe the displayed waveform Overcompensation Correct Compensation Undercompensation Figure 1 8 Probe compensation calibration 18 DSO Series User Manual 3 Ifyouseean Undercompensation or Overcompensation waveform display adjust the adjustable capacitance tab of the probe with a screwdriver with non metal handle until a Correct Compensation waveform shown in the above figure is displayed N Warning To avoid electric shock when measuring high voltage with the probe ensure the probe s insulation lead is in good condition Do not touch the metal part of the probe when connected to HV power Automatic Setup for Waveform Display Your DSO oscilloscope features an auto setup function It can automatically adjust the vertical deflection factor scanning time base and trigger mode based on the input signal until the most appropriate waveform is displayed The auto setup function can only be operated when the signal to be measured is 20Hz or above and the duty ratio is larger than 1 Using the Auto Setup Function 1 Connectthe signal to be tested to the signal input channel 2 Press AUTO The oscilloscope will automatically set the vertical deflection factor scanning t
40. ere is update file on the USB device then restart the operation Program Update System IN AN yon tot a ae SONOS RS HS QS Welcome you are using USB Update program 3 2 Figure 3 13 No valid update document 73 TENMA 2 74 The user cancels the update process When the oscilloscope is restarted with the USB device plugged in you can cancel upgrade by pressing F1 To cancel upgrade and operate your oscilloscope normally follow the on screen instructions Remove the USB device and reboot Program Update System Figure 3 14 Cancel update 1 DSO Series User Manual During the update process you can cancel update by pressing F1 To cancel upgrade and operate your oscilloscope normally follow the on screen instructions Remove the USB device and reboot Program Update System ae Welcome Figure 3 15 Cancel update 2 DSO Series User Manual You can still cancel update when the oscilloscope is ready for the process Simply press F1 to return to normal operation Please follow the on screen instructions Remove the USB device and reboot Program Update System will happen Figure 3 16 Cancel upgrade 3 TENMA The USB device is removed before update begins If the USB device is removed when the update documentis being read before commencement of update the following prompt will appear USB device has been removed Pleas
41. etting of 50ns or faster the oscilloscope will automatically carry out interpolation i e inserting a sampling point between other sampling points Equivalent sampling This is a repeated sampling mode that allows detailed observation of repeated cyclical signals In the equivalent sampling mode the horizontal pixel aspect ratio is 40ps higher than the real time mode i e 25GS s equivalent Sampling mode Your oscilloscope acquires signal samples at equal time intervals to reconstruct waveform Peak detect mode In this acquisition mode the oscilloscope identifies the biggest and smallest values of the input signals at each sampling interval and use these values to display the waveform In effect the oscilloscope can acquire and display narrow pulse which would otherwise be omitted in the sampling mode Noise seems to be more significantin this mode Average mode The oscilloscope acquires several waveforms and take the average value to display the final waveform You can use this mode to reduce random noise TENMA Setting the Display System As shown below the DISPLAY button in the control zone is the function key for the display system MULTI PURPOSE Yo MEASURE ACQUIRE CURSOR DISPLAY UTILITY AUTO PUSH SELECTED Figure 2 20 Function key forthe sampling system display Press the DISPLAY button to pop out the setup menu shown below You can use this menuto adjustthe display mode 47 TENMA Table 2 13
42. evel to make the waveform display as stable as possible 2 Press the horizontal HORI MENU key to display the horizontal menu 1 Trigger source Trigger can be obtained from various signal sources Input channel CH1 Ch2 external trigger EXT LINE Input Channel The most common trigger source is vertical channel choose either one The channel selected as trigger source can operate normally whether the input is displayed or not External Trigger This type of trigger source can trigger in a third channel while acquiring data in two other channels For example you can use an external clock or the signal from acircuit to be tested as the trigger source EXT trigger source uses external trigger signals from the EXT TRIG adaptor EXT can use the signals directly Youcan use EXT within the trigger level range of 3V and 3V LINE means the grid power source This trigger mode is suitable for observing signals related to the grid e g the correlation between lighting equipment and power source equipment to achieve stable synchronization 43 TENMA 2 3 44 Trigger mode Determine the action of your oscilloscope at no trigger This oscilloscope offers three trigger modes for selection auto normal and single m Auto Trigger The system will acquire waveform data automatically when there is no trigger signal input The scan baseline is shown on the display When the trigger signal is generated it autom
43. front panel is open TENMA Use suitable fuses Only use specified fuse types and rated specifications Avoid exposing circuitry When power is on never make contact with exposed adaptor or components When fault is suspected stop operation If you suspect a fault ask a qualified maintenance professional to carry out inspection Maintain good ventilation Do not operate in humid conditions Do not operate in combustible and explosive conditions Keep the product surface clean and dry Safety Messages and Symbols Safety terminology used in this manual The following messages may appear in this manual Warning Warning statements identify conditions or practices that could resultin injury or loss oflife Caution Caution statements identify conditions or practices that could result in damage to this unit or other properties DSO Series User Manual Messages on the product The following messages may appear on the product Danger means potential damage that is immediate Warning means potential damage that is not immediate Caution means possible damage to this product or other properties Icons on the product The following icons may appear on the product High voltage Caution Referto manual Protective Groundterminal Groundterminal ground terminal for chassis fortesting TENMA Preface DSO oscilloscopes offer user friendliness outstanding technical This manual provides informat
44. fter triggering The trigger position is typically set at the horizontal center of the screen In this case you are able to view 6 divisions of pretrigger and delayed information Turning the horizontal position of the waveform allows you to adjust the horizontal displacement of the waveform By observing pretrigger data you can see the waveform before trigger occurs For example you can detect the glitch that occurs when the circuitry starts Observation and analysis of pretrigger datacan help you identify the cause of glitch Attenuating high DSO Series User Manual Setting the Sampling System As shown below ACQUIRE button in the control zone is the function key for the sampling system RUN oe CURSOR DISPLAY UTILITY PUSH SELECTED MULTI PURPOSE F MEASURE ACQUIRE AUTO Figure 2 17 Function key forthe sampling system Press the ACQUIRE button to pop out the sampling setup menu You can use this menu to adjust the sampling mode TENMA Table 2 12 Sampling menu Function Menu Setup Explanatory Note Mode Sample Turn onthe ordinary sampling mode Peak Turn onthe peak detect mode Average Setto average sampling and display the average number of times Average 2 256 Set the average number of times in multiples of 2 i e 2 4 8 16 32 64 128 256 To change the average number of times use the multifunction control knob on the left of Figure 2 16 Sampling Realtime Setsamplingto real
45. g LOW FREQUENCY SUPPRESSION or HIGH FREQUENCY SUPPRESSION youcan suppress low frequency or high frequency noise respectively and achieve a stable trigger 4 Reducingdisplay noise by setting the sampling mode O If the signal being measured is stacked with random noise and the waveform is too coarse as a result you can use the average sampling mode to eliminate random noise display and reduce the size of waveform for easy observation and measurement After getting the mean random noise is TENMA reduced and details ofthe signal are clearer Follow the steps below Press ACQUIRE in the menu zone of the front panel to display the sampling setup menu Press menu operation key F1 to set acquisition mode to AVERAGE then press the multifunction control knob to adjust the average number of times in multiples of 2 i e 2 to 256 until you get the desired waveform display that meets observation and measurement requirements See the figure below H Pos 1 00us Figure 3 5 Signal noise suppressed You can also lower the waveform brightness to reduce display noise Caution In the average sampling mode the waveform display will update at a slower rate Thisis normal 67 TENMA Illustration 5 Using the cursors for measurement Your oscilloscope can measure 28 waveform parameters automatically All auto parameters can be measured with the cursors By using the cursors you can quickly measure the time and volta
46. ge of a waveform Measuring one step voltage of the step signal To measure one step voltage of the step signal follow the steps below 1 Press CURSOR to display the cursor measurement menu 2 Press menu operation key F1 to set cursortype to VOLTAGE 3 Turn the multifunction control knob to set cursor 1 at one step voltage of the step signal 4 Press PUSH SELECTED to select the cursor then turn the multifunction control knob again to set cursor 2 at another step voltage of the step signal The cursor menu will automatically display the V value i e the voltage difference of that point See the figure below Note When using the cursors to measure time follow step 2 only and set the cursor type to time 68 DSO Series User Manual Cursor Type Valt Figure 3 6 Using the cursors to test signal voltage DSO Series User Manual Illustration6 Using the X Y function To check the phase difference between two channels Example To measure the phase variation when a signal passes through the circuit connect your oscilloscope to the circuit and monitor the input and output signals To check the circuit s input and outputin the X Y coordinate mode follow the steps below 1 Setthe attenuation factor of the probe to 10X Set the switch of the probe to 10X 2 Connect the CH1 probe to the input terminal of the network Connect the CH2 probe to the output terminal of the network 3 Ifthe channel is
47. ginal purchaser acquired the product from Tenma or an authorized dealer The probe other accessories and fuses are not covered by warranty If any genuine defect is found during the valid warranty period Tenma has the option to repair the defective product without any charge for parts or labor or replace it with another product at the discretion of Tenma Tenma may use parts modules and replacement products that are brand new or repaired to a good as new standard All old parts modules and products that are removed during replacement become properties of Tenma In this User Manual customer means an individual or entity vested with the rights hereunder To enjoy the warranty service the customer must report any defect to Tenma during the valid warranty period and make appropriate arrangement to allow servicing The customer should pack the defective product in a container and deliver it to a maintenance centre specified by Tenma The customer should also prepay all freight cost and provide a copy of the original sales receipt issued to the original purchaser If the product 2 DSO Series User Manual is to be delivered to an address within the country where the maintenance centre operates Tenma shall pay the cost of retuming the product to the destination all freight custom duty tax and other costs will be paid by the customer This warranty does not apply to any defect malfunction or damage caused by accident no
48. he waveforms of CH1 and CH2 do not overlap This will make observation easier 2 Observing the delay caused by a sine wave signal passes through the circuit and observing waveformchanges When measuring channel delay automatically Press MEASURE to display the automatic measurement 64 DSO Series User Manual menu Press F1 to enterthe measurement type selection menu Press F4 to enter the time measurement parameterstable Press F5 twice to go to page 3 3 Press F2 to select delayed measurement Press F1 select CH1 and then press F2 to select moving to CH2 then press F5 to confirm You can see the delay value below CH1 CH2 delay in the F1 zone now Observe waveform changes see the figure below 500mY Ch2 Math Off Figure 3 2 Waveform delay TENMA Illustration 3 Acquiring single signals appropriate range Turn the TRIGGER LEVEL control knob to get the desired level Press RUN STOP and wait for a signal that meets the trigger condition If any signal reaches the set trigger level the system will sample once and display it on the screen By using this function you can easily acquire any occasional event For example when a sudden glitch of relatively big amplitude is acquired set the trigger level to just higher than the normal signal level Press RUN STOP and begin DSO Series User Manual The advantages and special features of your digital storage oscillosc
49. ifunction control knob at the top of the front panel data can only be stored on the USB device Save Store the bitmap data 52 DSO Series User Manual a Bit Map pe Bit Map Chi IRS Ch2 Off M 50 Hath OFF CHI Figure 2 25 Bitmap storing Utility Function Setup As shown below the UTILITY button in the MENU control zone is the function key for utility functions TENMA DSO Series User Manual O amp Table 2 19 Utility function menu page 2 O oer owray urury wro Function Menu Setup Explanatory Note Reset Setting the factory setup recall Figure 2 26 Function key for the sampling system function e Skin 1 Setting the interface designs Press the UTILITY button to pop out the setup menu for utility 2 Two designs mono display 3 functions four designs colour m 4 Table 2 18 Utility function menu page 1 Grid Bright 1 100 Store the setting Function Menu Setup Explanatory Note Firstpage 2 3 Selt Adj Execute Runauto calibration Close Cancel auto calibration and return to the previous page Recorder See Table Setup for recording the waveform Table 2 20 Utility function menu page 3 2 21 z Language Simplified Selectthe language interface Function Menu Setup Explanatory Note oan Version Display the current system raditiona E Chinese information ofthe oscilloscope English Spanish Portuguese S EE
50. ime base and trigger mode DSO Series User Manual Should you require to make more detailed check you can adjust manually after the auto setup process until you get the optimal waveform display Getting to Know the Vertical System As shown in the figure below there are a group of buttons and knobs in the vertical control zone The following exercise will guide you through vertical setup VERTICAL POSITION Figure 1 9 Vertical control zone onthe front panel TENMA Turn the vertical position knob to display the signal in the centre of the window The vertical position knob controls the vertical display position of the signal When you turn the vertical position knob the sign indicating the GROUND channel will move up and down with the waveform Measurement Tips If the channel coupling is DC you can measure the signal s DC quickly by checking the difference between the waveform and signal ground In the case of AC coupling the DC within the signal will be filtered With this coupling mode you can display the AC of the signal with higher sensitivity Shortcut key for resetting to zero SET TO ZERO This shortcut key can reset vertical shift horizontal shift and holdoff to the zero position center point and set the trigger level to 50 19 TENMA 2 Change the vertical setup and observe changes of status Getting to Know the Horizontal System information You can identify
51. ion on the operation of the DSO digital indicators and ahost ofadvanced features They are your perfect tools storage oscilloscopes series Guidance is given in several chapters to complete testing tasks swiftly and efficiently DSO Series User Manual as follows This manual is a user guide for two models of the digital storage Chapter 1 User Guide Simple guide to oscilloscope functions oscilloscope series andinstalati n f Model Bandwidth Real time Sampling Rate Display Chapter 2 Instrument Setups Guide to operation of the DSO 72 8705 50MHZ digital storage oscilloscope series 1GS s Color 72 8710 100MHz Chapter 3 Practical Example Illustrations Example illustrations are provided to solve various testing problems Chapter 4 System Prompts and Trouble shooting Chapter 5 Appendixes Appendix A Technical Indicators Appendix B Accessories for DSO Series Digital Storage Oscilloscopes Appendix C Maintenance and Cleaning Appendix D Chinese and English Cross Reference Table for the Front Panel The DSO Digital Storage Oscilloscopes Series TENMA DSO Oscilloscopes offer a user friendly front panel with clear indications to allow access to all basic functions for easy operation The scaling and position buttons for all channels are optimally arranged for intuitive operation As design is based on the familiar practices of traditional instruments users can use the new units w
52. ithout spending considerable time in leaming and familiarizing with operation For faster adjustment to ease testing there is a AUTO key to instantly display the appropriate waveform and range position Apart from being extremely user friendly DSO Oscilloscope have the high performance indicators and superb functions required for speedy execution of measurement tasks Thanks to 1GS s real time sampling and 25GS s equivalent sampling you can observe higher speed signals with your DSO Oscilloscope The strong trigger and analytical functions make it easy to acquire and analyse waveforms while the sharp and clear LCD and mathematics functions ensure clear observation and reliable analysis of signal conditions The performance features listed below will explain why the DSO series can fully satisfy your testing and measurement requirements DSO Series User Manual Dual analog channels width range 1 mV div 20 V div High definition color LCD system 400 x240 resolution Supports plug and play USB storage device Communication with and remote control ofcomputerthrough the USB device Automatic waveform and status configuration Storage of waveforms setups and interfaces waveforms and setupsreproduction Fine window extension precise analysis of waveform details and overview Automatic measurement of 28 waveform parameters Automatic cursor tracing measurement function Unique waveform recording and replay function Built in FFT Mu
53. ltiple waveform mathematics functions including add subtract multiply and divide Edge pulse width andalternate trigger functions Multilingual menu displays Help messages in English and Chinese DSO Series User Manual DSO accessories 2x1 2m 1 1 10 1 probe For details refer to the probe instructions These accessories conform with En61010 031 2002 standards Power line conforming to international standards applicable in the country ofuse UserManual USB connecting cable UT DO5 two terminal USB HOST plug DSO oscilloscope communication control software USB device TENMA TENMA Table of Contents Item Safety Instructions Preface Chapter1 User Guide 11 General INSpection 15 Functional Check 15 Probe Compensation 18 Automatic Setup for Waveform Display 18 Getting to Knowthe Vertical System 19 Getting to Knowthe Horizontal System 20 Getting to Knowthe Trigger System 22 Chapter2 Instrument SetupS
54. nd vertical cursors cross to form a cross shaped cursor It automatically positions itself on the waveform You can adjust the horizontal position of the cross cursor by turning the multifunction control knob Your oscilloscope will also display the coordinate of the cursor point TENMA 5 When the cursor function is enabled measurement value is automatically displayedin the upper right hand corner Using the Run Button There is a button on the top right hand corner on the front panel RUN STOP When this button is pressed and a green indicator lights up your oscilloscope is ina running status If a red light comes on after pressing this button itindicates the unit has stopped operation MULTI PURPOSE 7 MEASURE ACQUIRE STORAGE CURSOR DISPLAY UTILITY AUTO PUSH SELECTED Figure 2 29 RUN STOP button Auto Setup As shown above auto setup can simplify operation Press AUTO and the oscilloscope can automatically adjustthe vertical deflection factor and horizontal time base range according to the amplitude and frequency of the waveform and ensure stable display of the waveform When the oscilloscope is in auto setup mode the system setupis as follows 61 TENMA Table 2 32 Function Menu Setup Acquisition mode Sampling Display format Setto YT Horizontal position Automatic adjustment SEC DIV Adjust according to signal frequency Trigger coupling AC Holdoff Minimum value
55. ndwidth 100MHz 72 8710 50MHz 72 8705 Single bandwidth 100MHz 72 8710 50MHz 72 8705 Selectable analog 20MHz Low frequency response AC coupling 3dB lt 10Hz at BNC Risetime 3 5ns DC gain accuracy When vertical sensitivity is 1mV div 2mV div 5 sample or average acquisition mode When vertical sensitivity is 5mV div 4 sample or average acquisition mode When vertical sensitivity is 10mV div 50V div 3 sample or average acquisition mode DC measurement accuracy average acquisition mode When vertical position is zeroand N gt 16 5 x reading 0 1 div 1mV and 1mV div 2mV div is selected 4 x reading 0 1 div 1mV and 5mV div is selected 3 x reading 0 1 div 1mV and 10mV div 50V div is selected When vertical position is not zero andN 216 3 x reading vertical shift reading 1 x vertical shift reading 0 2div Set from 5mV div to 200mV div plus 2mV Setup value gt 200mV divto 50V div plus 50mV Voltage difference AV measurement accuracy average acquisition mode Under identical setup and environmental conditions the voltage difference AV between any two points of the waveform after the average of gt 16 waveforms acquired waveforms is taken 3 x reading 0 05div 83 TENMA DSO Series User Manual Trigger Trigger sensitivity Intemal trigger 1 div external trigger 0 2V Triggerlevel
56. ndwidth suppression can suppress high frequency quantities over 20MHZz or noise in the signal being tested Application is as follows Press CH1 to tum CH1 on Then press F2 to set BANDWIDTH SUPPRESSION OFF It is now set up as full bandwidth The signal being measured can pass through even if it contains high frequency quantities The waveform display is as follows H Pos 0 00us wr CHI Coupling AC Bandwidth suppression off Volts Div Invert Ch2 Off M 200ns ECHI 0 00mv 2 4 Waveform display when bandwidth suppression is off 27 Press F2 to set BANDWIDTH SUPPRESSION ON All high frequency quantities higher than 20MHz in the signal being tested will be limited The waveform display is as follows H Pos 0 00s gt CHI Coupling oc ETES Bandwidth opan suppression Yolts Div 20MHz Probe 10X Invert Bw Ch2 Off W 100ns Close ECHI 0 00mv Bandwidth suppression icon Figure 2 5 Waveform display when bandwidth suppressionis on 28 DSO Series User Manual 3 Setting the probe rate To match the probe attenuation factor setup it is necessary to set up the PROBE attenuation factor in the channel operation menu accordingly For example when the probe attenuation factor is 10 1 set the probe attenuation factor at 10X in the menu Apply this principle to other values to ensure the voltage reading is correct The figure below shows the setup and vertical range display when the probe is setat 10 1
57. neously N is selectable from 2 4 8 16 a The oscilloscope must have been operating continuously for 32 64 128 to 256 thirty minutes at the specified operating temperature E If the operating temperature changes by more than 5 C you Input must perform the Self Cal operation accessible through Input coupling DC AC GND the system functions menu All specifications are guaranteed _ nputimpedance 1MQ 2 in parallel with 20 3pF unless noted Typical Probe attenuation factor 1x 10x 100x 1000x Maximum input voltage 400V DC AC Peak 1MQ input impedance Time delay between channels Typical 150ps 81 TENMA DSO Series User Manual Horizontal Waveform interpolation Sin x x Recording length 2 x 600k sampling dot Saving depth 25k for singlechannel 12 5k for dual channels Scanning range s div 2ns div 50s div at 1 2 5 increment Accuracy of sampling rate and delay time 50ppm any time interval 1 ms Time interval AT Measurement accuracy fullbandwidth Single 1 sampling time interval 50ppm x reading 0 6ns gt 16 average values 1sampling time interval 50ppm x reading 0 4ns 82 DSO Series User Manual TENMA bandwidth limit Typical Verticall A Dconverter 8 bitresolution aee range 1 mV div 20V div at input BNC Position range 10div Analog ba
58. ng edge Fall Set to triggeron the signal s falling edge Rise amp Fall Set to trigger on the signal s rising and falling edges Mode Auto Set to sample waveform onlyif no trigger condition is detected Normal Set to sampling waveform only when trigger condition is met Single Set to sample waveform once when detecting one trigger and then stop Coupling DC AllowAC and DC quantities of the input signal to pass AC Intercept DC quantities of the input signal HF Reject Reject high frequency quantities above 80kHz of the signal LF Reject Reject low frequency quantities below 80kHz of the signal Note With regard to edge and pulse width trigger the oscilloscope will determine the trigger frequency based on the number of trigger occurrences When main frequency counter is on display comes up at the top right corner To maintain a stable trigger frequency a larger trigger signal range is required DSO Series User Manual DSO Series User Manual Pulse Width Trigger TENMA Pulse width trigger means determining the triggering time based on the trigger width You can acquire abnormal pulse by setting the pulse width condition Table 2 7 P 1 Function Menu Setup Explanatory Note Type Pulse Source CH1 Set CH1 as the signal source trigger signal CH2 Set CH2 as the signal source trigger signal EXT Set the external trigger input channel as the signal source trigger signal AC Line Setup as gridtrigger Alter CH1
59. ning Frequency recognition rate is better than the rectangle Sine cyclical and narrow band random noise window but amplitude recognition rate is poorer Hamming Frequency recognition rate is marginally better than Hanning Temporary or fast pulse Signal level varies greatly window before and after Blackman The best amplitude recognition rate and the poorest Mainly for single frequency signals to search for frequency recognition rate higher order harmonic wave Definition FTT recognition rate means the quotient of the sampling and math points When math point value is fixed the lower the sampling rate the better FFT recognition rate you get Nyquist frequency To rebuild the original waveform at least 2f sampling rate should be used for waveform with a maximum frequency of f This is known as Nyquist stability criterion where f is the Nyquist frequency and 2f is the Nyquist sampling rate TENMA DSO Series User Manual Setting the Horizontal System Table 2 5 The horizontal shift knob Function Menu Setup Explanatory Note You can move the waveform on the screen with the horizontal shift Main 1 Open the main time base knob By turning it clockwise you can shift the waveform to the left to ea the main time base see more pre trigger signals Contrarily turning it anticlockwise can extension is on window extension display more post trigger signals will close Horizontal scaling Adjust the main time
60. nnel for parameter m remen Measurement menu Volt ears as type parameter menu Operation Time Enter the time type parameter menu Press MEASURE to display the zones for 5 measurement values You Parameters Display close all measurement can press any one of F1 F5 to enter the measurement option menu as parameters shown in Table 2 23 Voltage type menus are shown in Table 2 24 to Table 2 27 Table 2 24 Waveform record menu 1 Press UTILITY to enter Function Measurement Explanatory Note Previous Return to the menu shown in Table 2 23 Preshoot Select to return to the parameter measurement display menu and replace the original parameter in that position Amplitude Ditto Overshoot Ditto Next page 1 4 Turn page 58 DSO Series User Manual TENMA Table 2 25 Table 2 27 Function Measurement Explanatory Note Function Measurement Explanatory Note Previous Return to the previous page Previous Return to the previous page Mean Select to return to the parameter Max Select to return to the parameter measurement display menu and measurement display menu and replace the original parameter in that replace the original parameter in that position position Pk Pk Ditto Min Ditto RMS Ditto Next 2 4 Turn page Next 4 4 Return to page 1 as shown in Table 2 24 Time Type menus are shown in Table 2 28 to Table 2 31 Table 2 26
61. of a certain signal source and the rising edge of the first cycle of another signal source Measure as follows 1 Inthe measurement menu as shown in the previous example select the display zone for delayed measurement value time type page 3 3 Press F2 to enterthe delay menu 3 Select reference signal source CH1 and then select the delay signal source Ch2 4 Press F5 to confirm The delayed measurementis now displayed in your specified zone DSO Series User Manual Automatic measurement of voltage parameters Your DSO Series Oscilloscope can automatically measure the following voltage parameters Peak to peak value Vpp The voltage value from the highest point to lowest point of the waveform Maximum value Vmax The voltage value from the highest point to ground GND of thewaveform Minimum value Vmin The voltage value from the lowest point to ground GND of thewaveform Amplitude value Vamp The voltage value from top to base of the waveform Mean Vmid Half of the amplitude Top value Vtop The voltage value from the level top to ground GND of the waveform Base value Vbase The voltage value from the level base to ground GND of the waveform Overshoot The ratio value of the difference between maximum value and top value to the amplitude value of the waveform Preshoot The ratio value of the difference between minimum value and base value to the amplitude value of the waveform
62. ope lie in its ability to acquire non cyclical signals like pulse and glitch To acquire a single signal you must have transcendental knowledge of that signal to set the trigger level and trigger edge For example if the pulse is a logical signal of TTL level the trigger level should be set at about 2V and the trigger edge should be set to rising edge trigger If you are not certain about the signal you can observe it by automatic or normal trigger to determine the trigger level and trigger ee waiting When a glitch occurs the machine will automatically Steps trigger and record the waveform immediately before and 1 Asin the previous illustration set the attenuation factor of the after triggering By turning the horizontal POSITION knob in probe and CH1 the horizontal control zone on the front panel you can change 2 Carry outtrigger setup the trigger position horizontally to achieve negative delay O Press TRIG MENU in the trigger control zone to display the trigger of various lengths for easy observation of waveform trigger setup menu occurring before the glitch In this menu use F1 F5 menus to set the trigger type to EDGE set trigger source to CH1 set inclination to RISING set trigger type to SINGLE and set trigger coupling toAC Adjust horizontal time base and vertical range to an 65 M Pos 0 00jus gt Trigger Type Edge Source CHI Slope Rise Mode Single Coupling Chi AE Ch2 Off ATTE Ac
63. ou have to set the probe attenuation factor of the oscilloscope This factor changes the vertical range multiple to ensure the measurement result correctly reflects the amplitude of the signal being tested Set the attenuation factor of the probe as follows Press F4 to show 10X on the menu CHI Coupling Volts Div Coarse Probe ration Invert Figure 1 6 Setting the deflection factor of the oscilloscope probe TENMA Connect the probe tip and ground clampto the connection terminal forthe probe compensation signal Press AUTO and you will see a square wave inthe display 1kHz approximately 3V peak to peak value in a few seconds as shown in Figure 1 7 Use the same method to check CH2 Press function key CH1 again to close CH1 Press function key CH2 to activate CH2 and repeat steps 2 and 3 M Pos 0 00 15 CHI a Coupling AC BW Limit Close Volts Diw Coarse Probe 1x Invert Chi Ay Che off ETE Close Hath Off ECHI 0 00mv Figure 1 7 Probe compensation signal 17 TENMA Probe Compensation When connecting the probe to any input channel for the first time perform this adjustment to match the probe to the channel Skipping the compensation calibration step will result in measurement error or fault Please adjust probe compensation as follows 1 Set the probe attenuation factor to 10X Move the switch on the probe to 10X and connect the probe to CH1 When using a hook tip ensure itis w
64. ow function there will be different amplitudes at the start and finish resulting in Blackman Set Blackman window function transient interruption of high frequency at the connection point In PEANN SEINEN ure frequency domain this is known as leakage To avoid leakage multipl Vertical Vrms Set the vertical unit to Vrms or q f cy g a 9e ply aBVrms dBVrms the original waveform by one window function to set the value to 0 for start and finish compulsively For application of the window function please see the table below Howto use FFT functions Signals with DC quantities or DC offset will cause error or offset of FFT waveform quantities To reduce DC quantities select AC coupling To reduce random noise and frequency aliasing resulted by repeated or single pulse event set the acquiring mode of your oscilloscopeto average acquisition 31 TENMA 32 DSO Series User Manual Table 2 4 FFT Window Feature Most Suitable Measurement Item Rectangle The best frequency recognition rate the worst amplitude Temporary or fast pulse Signal level is generally the recognition rate Basically similar to a status without adding same before and after Equal sine wave of very window y recognition rate the worst amplitude recognition similar frequency There is broad band random rate Basically similar to a status without adding window noise with slow moving wave spectrum Han
65. r further instructions This indicates that the software version you have saved on to the USB device is lower than the existing one on the oscilloscope You should acquire the correct version either online or through our after sales service department To see version information press UTILITY SYSTEM CONFIGURATION SYSTEM INFORMATION Please download the suitable update document Program Update System tting for read file Ok thi Figure 3 20 Low software version TENMA Software document incompatible with product model Ifthe USB update document is incompatible with the oscilloscope model update will fail You will be prompted that Software and product model incompatible Please read the user manual for further instructions You should download an update document which corresponds with your oscilloscope model e g 72 8710 then repeat the USB update steps Program Update System Figure 3 21 Incompatible software document and product model 77 TENMA Illustration 8 Screen copy DSO Series User Manual You can press the screen copy key PrtSc to intercept a full screen To use this function followthe steps below 1 Press the screen copy key PrtSc copying is done when the REE completion screen is displayed E T 2 Store the intercepted graphic on the USB device Insert the USB device press STORAGE and select bitmap in the type menu Select any storage position between 1 and 200 with
66. range 8div from the centre of the screen Trigger level accuracy Typical applied on signals of 20ns rise or fall time 0 3div x V div within 4div from the centre of the screen Pretrigger capability Normal mode scanning mode pretrigger delayed trigger Pretrigger depth is adjustable Holdoff range 100ns 1 5s Set level to 50 Typical Input signal frequency 50Hz Edge Trigger Edgetype Rise fall rise and fall Pulse Trigger Triggermode Greater than less than or equal to positive pulse Greaterthan less than or equal to negative pulse Pulse width range 20ns 10S Alternate Trigger ATrigger Edge pulse B Trigger Edge pulse 84 TENMA DSO Series User Manual Measurement Cursor Manual mode Voltage difference AV between cursors time difference A T between cursors time difference AT countdown Hz 1 AT Automatic measurement mode Cursor display is enabled during measurement Peak to peak amplitude maximum minimum top bottom mean average root mean square overshoot preshoot frequency cycle rising time falling time positive pulse negative pulse positive duty ratio negative duty ratio delay Automatic measurement Customized parameter measurement 3types Mathfunctions yay X Saving waveforms Internal 20 groups of waveforms and 20 setups USB 200 groups of screens 200 groups of wavefo
67. replace the original parameter in that position Cursor Measurement Press CURSOR to display the measurement cursor and cursor menu then adjust the cursor position by turning the multifunction control knob As shown in the figure below CURSOR in the MENU control zone is the function key for cursor measurement MEASURE ACQUIRE CURSOR UTILITY AUTO PUSH SELECTED Figure 2 28 Functionkey forthe sampling system cursor MULTI PURPOSE o a DSO Series User Manual You can move the cursor to carry out measurement in the CURSOR mode There are three modes to choose from voltage time and tracking When measuring voltage press PUSH SELECTED and F2 on the front panel Positions of the two cursors and the cursor moving speed can be adjusted with the multifunction control knob to measure V Likewise by selecting time you can measure t In the tracking mode and waveform display is on you can see the cursor and track signal changes automatically by adjusting with the multifunction control knob Notes 1 PUSH SELECTED To selectthe cursor 2 Coarse tune fine tune To adjust the cursor moving speed 3 Measuring voltage time Cursor 1 or cursor 2 will appear simultaneously Adjust their positions on the screen with the multifunction control knob and select which cursor to adjust with the PUSH SELECTED button The displayed reading is the voltage or time value between the two cursors 4 Tracking mode Horizontal a
68. rmal wear and tear of mechanical parts any form of application other than the stated ones improper use improper maintenance or poor maintenance Under the warranty terms and conditions Tenmahas no obligation to provide the following services a Repairing any damage arising from installation repair or maintenance carried out by anon Tenma service representative b Repairing any damage arising from improper use or connection to incompatible equipment c Repairing any damage or malfunction arising from using a power source not provided by Tenma d Servicing a product that has been modified or integrated with other products such modification or integration makes repair more time consuming and difficult DSO Series User Manual This warranty is made available to this product specifically and supercedes all other previous warranties whether express or implied Tenma and its dealers will not make any implied guarantee on the salability or suitability of this product for any specific purpose Inthe event of breach of warranty terms and conditions repair or replacement of the defective product shall be the only remedial measure offered by Tenma Notwithstanding any prior notification of potential damage that is indirect special consequential or inevitable Tenma and its dealers shall bear no liability for any such damage Safety Instructions This unit is designed and manufactured strictly in accordance with GB4793 safety req
69. rms FFT Window Hanning Hamming Blackman Harris Rectangular Sampling points 1024 points Lissajous Figure Phase difference 3degrees Trigger frequency counter Reading pixel aspect ratio 6 Trigger sensitivity 30Vrms Accuracy Typical 51ppm including all frequency reference errors and 1 word 85 TENMA DSO Series User Manual Display Environmental Display type 178mm diagonal line 7 LCD panel Temperature Operating 0 C 40 C Non operating 20 C 60 C Display resolution 400 horizontal x RGB x240 vertical pixels color Cooling Method Forced fan cooling Longitudinal 8 div 25 dot div Humidity lt 35 C lt 90 RH Display Colour Colour 35 C 40 C lt 60 RH Waveform display zone Lateral 12 div 25 dot div Altitude Operating under 3 000m Non operating under 15 000m The DSO series fuse is on the power board inside the unit 86 Display contrast Typical Adjustable Backlight Intensity Typical 300nit Mechanical Specifications Display Languages Simplified Chinese Traditional Dimension reference only Width 306mm Chinese English Spanish Height 147mm Portuguese French Depth 122mm Interface Functions Weight Standard setup 1xUSBOTG Input coupling Without packaging 2 2kg Optional Input impedance With packaging
70. rs for automatic measurement Your oscilloscope can automatically measure most display signals To measure signal frequency and peak to peak value follow the steps below Press MEASURE to display the automatic measurement 808 TENMA Press F1 to enter the measurement type selection menu Press F3 to select voltage Press F5 to go to page 2 4 then press F3 to select measurement type peak to peak value Press F2 to enter the measurement type selection menu then press F4 to selecttime Press F2 toselect measurement type frequency Peak to peak value and frequency measurement value are now displayed in positions F1 and F2 respectively H Pos 0 00us Off M10 CHI 4 Figure 3 1 Automatic measurement 63 TENMA Illustration 2 Observing the delay caused by a sine wave signal passes through the circuit As in the previous scenario set the probe attenuation factor of the probe and oscilloscope channel to 10X Connect the CH1 to the circuit signalinput terminal Connect CH2 to the outputterminal Steps 1 Todisplay CH1 and CH2 signals Press AUTO Continue to adjust the horizontal and vertical range until you get the desired waveform display Press CH1 to select CH1 Adjust vertical position of the CH1 waveform by turning the vertical position control knob Press CH2 to select CH2 In the same way described above adjust vertical position of the CH2 waveform so that t
71. s used for trigger shift and the horizontal POSITION knob is turned you can see that the waveform moves horizontally with the knob Press HORI MENU to display the ZOOM menu In this menu press F3 to activate window expansion Then press F1 to quit window expansion and return to the main time base You can also set the holdoff time with this menu TENMA Shortcut key for resetting trigger point displacement to horizontal zero The shortcut key SET TO ZERO can quickly reset the trigger point to the vertical centre point You can also turn the horizontal POSITION knob to adjust the horizontal position of the signal in the waveform window Definition Trigger point means the actual trigger point relative to the centre point of the storage device By turning the horizontal POSITION knob you can move the trigger point horizontally Holdoff means reactivating the time interval of the trigger circuit Turn the multifunction control knob to setthe holdoff time 21 TENMA Getting to Know the Trigger System As shown in Figure 1 11 there is one knob and three buttons in the trigger menu control zone The following steps will get you familiar with trigger setup TRIGGER A LEVEL Y Figure 1 11 Trigger menu control zone on the frontpanel 22 DSO Series User Manual Use the trigger level knob to change the trigger level You will see a trigger sign on the screen that indicates the trigger le
72. shown in Figure 3 9 the prompt on the right will appear Are you sure you wish to update If yes press F5 otherwise press F1 to cancel upgrade 71 TENMA 5 72 Program Update System SUUUUUUL e using USB Update program V3 2 Figure 3 10 Confirming the USB update document When the USB document is confirmed the following prompt will appear System upgrade is in progress Please wait process may take 3 to 5 minutes This DSO Series User Manual Program Update System Ae Ns ee AA you are using Ipdate program 1 will happen Figure 3 11 USB upgrade in progress 6 When update is complete a successful update prompt will appear Upgrade is successfully complete Please remove USB device then power off your oscilloscope and power it back on again to complete the process The oscilloscope program is now updated and system upgrade is complete In the event of update failure follow the steps below DSO Series User Manual Program Update System Figure 3 12 Successful USB update TENMA Caution If upgrade fails due to power interruption power off the oscilloscope and repeat all the USB update steps Below are some common causes for update failure 1 No update document If there is no document with the suffix uts the following message will appear when F5 is pressed after powering on Can t find the valid update file Please ensure th
73. time sampling Equ time Set sampling to equivalent sampling FastACQ ON Quick acquisition function is on OFF Quick acquisition function is off 45 By changing the acquisition setup you can observe the consequent changes in waveform display If the signal contains considerable noise you will see the following displays when average sampling is not selected and when 64 time average sampling is selected For sampling waveform display please see Figure 2 18 and Figure 2 19 M Pos 0 00ys5 wey Acquire j Mode Sample Sampling Equ time Fasticq OFF 500mY Ch2 Off M2 Hath Off CH Figure 2 18 Waveform without average sampling 46 DSO Series User Manual M Pos 0 00us gt Acquire a Mode Average Averages a 64 Sampling Equ time Fasticg OFF y Us Math Off ECHI O 00mnV Figure 2 19 Waveform when 64 time average sampling is selected Notes 1 Use Realtime sampling to observe single signals 2 Use Equivalent sampling to observe high frequency cyclical signals 3 To avoid mixed envelop when observing a signal select Peak Detect To reduce random noise of the displayed signal select average sampling and increase the average number of times in multiples of 2 i e selecting from 2 to 256 DSO Series User Manual Definitions Real time sampling In this mode the system makes full acquisition to fill the memory Maximum real time sampling rate is 1GS s At a s
74. to stop and thenpress F2 4 You can record as many as 1 000 screen data Stop F3 Stop recording Return F4 Return to the previous page DSO Series User Manual Important Points Auto Calibration You can correct measurement errors caused by environmental changes with the auto calibration function This process can be run selectively when necessary To make calibration more accurate power on your oscilloscope and allow 20 minutes to warm up Then press the UTILITY button help function and follow on screen instructions Choose your language Your DSO Series Digital Storage Oscilloscope can be operated in many languages To select a display language press the UTILITY menu button and choose your desired language Automatic Measurement As shown below the MEASURE button is the function key for auto measurement Read the following instructions to familiarize with all the powerful automatic measurement functions of your DSO Series Oscilloscope TENMA MULTI PURPOSE Yo MEASURE ACQUIRE CURSOR DISPLAY PUSH SELECTED Figure 2 27 Function key for the sampling system auto measurement Application Examples The measurement menu of your oscilloscope is capable of measuring 28 waveform parameters Press MEASURE to enter the parameter measurement display menu which has 5 zones for simultaneous display of measurement values assigned to function keys F1 F5 respectively When selecting the
75. tre point of the signal and a compulsory trigger button FORCE Trigger level Trigger level is set to a signal voltage that matches the trigger point SET TO ZERO Trigger level is set to the vertical centre point of the signal FORCE To generate a trigger signal compulsorily This button is used mainly inthetrigger mode and normal and single mode TENMA TRIG MENU Button for the trigger setup menu Trigger Control Trigger modes edge pulse andalternate Edge Trigger When the edge of the trigger signal reaches a given level trigger occurs Pulse Width Trigger When the pulse width of the trigger signal reaches a preset trigger condition trigger occurs Alternate Trigger Applicable to triggering signals without frequency coherence Below are notes for various trigger menus Edge Trigger Edge trigger means triggering at the trigger threshold of the input signal edge When selecting edge trigger you are triggering at the rising and falling edges of the input signal 37 TENMA 38 Table 2 6 FFT Window Feature Most Suitable Measurement Item Type Edge Source CH1 Set CH1 as the signal source trigger signal CH2 Set CH2 as the signal source trigger signal EXT Setthe external trigger input channel as the signal source trigger signal AC Line Setup as gridtrigger Alter Ch1 CH2 trigger their own signals alternately Slope Rise Set to triggeron the signal s risi
76. uirements for electronic testing meters and 1EC61010 1 safety standards It fully meets CAT 11600V insulation and overvoltage requirements and Grade Il anti pollution safety standards To prevent personal injuries anddamage ofthis unit or any other devices connectedto it please take note of the following safety precautions To avoid potential hazards use this unitstrictly as instructed by this User Manual Maintenance should only be carried out by a trained professional TENMA Toavoid fire and personal injury Use acorrect power cable Use only the specified power cable which is authorized in the country of use Removethe plug correctly Do notremove the probe ortesting cable whenthey are connected to power Ensure good grounding This unitis grounded bythe ground wire of the power cable To avoid electric shock the grounding conductor must touchthe ground Before connecting the input or outputterminal ensure the unitis properly grounded Connect the probe of the digital storage oscilloscope The probe ground cableis the same as ground potential Do not connect the ground cable to non ground voltage or high voltage Check the rated values of all terminals To prevent fire and excessive current shock please check all rated values and label data Read the manual carefully andcheckthe rated values before connecting the unit Do not operate the unit with the chassis cover open Do not operate this unit when the outer cover or
77. vel The sign will move up and down with the knob While you move the trigger level you will find the trigger level value atthe bottom of the screen changing accordingly Open the TRIGGER MENU see Figure 1 12 to change trigger setup Press F1 and select RISING for TYPE Press F2 and select CH1 for TRIGGER SOURCE Press F3 and set RISING for SLEW RATE Press F4 and setAUTO for TRIGGER MODE Press F5 and set AC for TRIGGER COUPLING DSO Series User Manual Mode Auto Coupling Figure 1 12 Trigger Menu TENMA Press SET TO ZERO to set the trigger level at the vertical centre point of the trigger signal amplitude Press FORCE to generate a compulsory trigger signal that is mainly used in the normal and single trigger modes 23 TENMA Chapter 2 Instrument Setups You should be familiar with basic operation of the vertical controls horizontal controls and trigger system menu of your DSO Series oscilloscope by now After reading the last chapter you should be able to use the menus to set up your digital storage oscilloscope If you are still unfamiliar with these basic operation steps and methods please read Chapter 1 This chapter will guide you through the following 24 Setting the vertical system CH1 CH2 MATH VERTICAL POSITION VERTICAL SCALE Setting the horizontal system HORIMENU J HORIZONTAL POSITION HORIZONTAL SCALE Setting the Trigger system TR
78. vertical deflection factor 1000x reading correct There are four values 1x 10x 100xand 1000x Invert Open Waveform invert function on Close Normal waveform display 25 1 Setting the channel coupling Take an example of applying a signal to CH1 The signal being tested is a sine signal that contains DC quantities Press F1 to selectAC Itis now setup as AC coupling DC quantities of the signal being tested will be intercepted The waveform display is as follows H Pos 0 00 15 CHI Coupling AC AC coupling setup Volts Div 500mY Ch2 Off ENTE Math Off TA Figure 2 1 DC quantities ofthe signal are intercepted 26 DSO Series User Manual Press F1 to select DC Both DC and AC quantities of the testing signal beinginputted to CH1 can pass through The waveform display is as follows M Pos 0 005 gt CHI E Coupling DC DC coupling setup BW Limit Volts Div Invert Figure 2 2 Both DC andAC quantities of the signal are displayed DSO Series User Manual Press F1 to select GROUND It is now set up as ground The display is as follows Note in this mode although waveform is not displayed the signal remains connected to the channel circuit M Pos 0 0015 CHI E Ground coupling BW Limit setup C Volts Div Coarse 500mv Ch2 Off M2 00ms Hath Off ECHI 4 0 00mY Figure 2 3 Screen display in ground mode 2 Setting channel bandwidth suppression Ba

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