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UTD2000L ENGLISH.cdr

1. 50 Display system 37 Compulsory 13 Horizontal system 14 Mattias gae ses Seege aces Seeerei I 20 Measurement 45 Preshoot 47 Storage EE AA 5 RUN STOP 52 Trigger system 12 Functions 15 Vertical system 15 Select 16 79 LINII T Coarse tune 15 Nyquist frequency 22 Realtime sampling 37 Top value 47 Bottomvalue 47 Technical indicators 72 Waveform inversion 21 Waveform recording 44 Pulse trigger 75 Overshoot 47 Cleaning 78 Top value
2. 47 Save 38 Warranty 71 Signal source 21 Bandwidth suppression 17 Troubleshooting 69 Window extension 24 Display system 37 Display type 77 Standard accessofies AIKA EE 77 80 UTD2000L User Manual Measuring simple signals 53 ee EE 11 Pulse width trigger 28 Language selection 45 Off geet lee se epee eee 10 Using the RUN button 51 Horizontal system 10 Factory setup 43 Functional check 1 External trigger 28 Average 47 Average acquisition 21 Positive pulse width 30 Ee EE 77 Edgetrigger 27 Alternatetrigger 27 Cursor measurement
3. 78 ae CY e 79 UTD2000L User Manual Chapter 1 User Guide Your UTD2000L 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 know the vertical system Getting to know the horizontal system Getting to know the trigger system When beginning to use your UTD2000L oscilloscope first familiarize yourself with the operation front panel This chapter briefly describes the operation and functions of the front panel so you can get started with your UTD2000L series digital storage oscilloscope as quickly as possible Your UTD2000L oscilloscope comes with a front panel with at a glance functions for easy operation There are knobs and function keys on the front panel The functions of knobs are similar to other Oscilloscope 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 5 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 f
4. 50 Tracking 51 Screendesign 44 Input channel 33 Storage and recall 38 UTD2000L User Manual Trigger coupling 12 Mechanical specifications 77 Automatic setup 70 Automatic measurement 45 Automatic trigger 55 Self calibration oo 45 Holdoff 23 Negative pulse width 30 Root mean square value 47 Peakimeasuremerit s2s 2 mme eI e EE seen 35 Peak to peak 46 Acquiring single signals 55 Recall 38 Range adjustment 19 Delayed measurement 54 Channel setup 18 Channelcoupling 16 Pretrigger 34 Reducing signal random noise 56 Probe compensation 8 Probe kaa 18
5. Sampling system 35 Coarsetune finetune 51 Utility system functions 42 Maximum value 47 Minimum value 47 Equivalent sampling 37 Contact us 71 Mate ee 20 Triggerlevel 27 Trigger setup 12 Trigger system 12 Hold oft 23 81 UTD2000L User Manual This user manual maybe revised without prior notice 82 UTD2000L User Manual Copyright 2009 Uni Trend Group Limited All rights reserved Manufacturer Uni Trend Technology chengdu Limited 2 Floor Block D2 199 Xiqu Da Dao Gaoxin Xiqu Cheng Du City Si Chuan Province China PostalCode 611 731 Headquarters Uni Trend Group Limited Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http Awww uni trend com 83
6. RiseTime The time taken by the waveform amplitude to rise from 1096 to 90 FallTime The time taken by the waveform amplitude to fall from 9096 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 47 LINII T Delay 1 2 Rising edge Delayed time of the rising edge of CH1 Ch2 Delay 1 2 Falling edge Delayed time of the falling edge of Chi Ch2 Positive duty ratio Duty Ratio of positive pulse width to cycle Negative duty ratio Duty Ratio of negative pulse width to cycle Measurement menu Operation Press MEASURE to display the zones for 5 measurement values You can press any one of F1 F5 to enter the measurement option menu as shownin Table 2 23 48 UTD2000L User Manual Table 2 23 Explanatory Note display menu measurement Enterthe voltage type parameter menu Enter the time type parameter menu Display close all measurement parameters Voltage type menus are shown in Table 2 24 to Table 2 27 Volt Time Parameters EAR the channel for parameter measurement Table 2 21 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 Amplitu
7. 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 the waveform Minimum value Vmin The voltage value from the lowest point to ground GND of the waveform Amplitude value Vamp The voltage value from top to base of the waveform Mean Vmid Half ofthe amplitude Top value Vtop The voltage value from the level top to ground GND ofthe 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 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 UTD2000L 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
8. w n Display Type Vector Format Persist YaveBright D 100 Ch2 S00mv XY mode Chi eG Math Off Figure 2 14 Waveform display in X Y mod 25 LINII T 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 lower 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 or math waveform Vector display type Horizontal MENU knob Trigger control 26 UTD2000L User Manual UTD2000L 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 osciloscope 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 os
9. horizontal controls and trigger system menu of your UTD2000L 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 Setting the vertical system CH1 CH2 MATH VERTICAL POSITION VERTICAL SCALE Setting the horizontal system HORI MENU HORIZONTAL POSITION HORIZONTAL SCALE m Setting the Trigger system TRIGGER LEVEL TRIG MENU FORCE Setting the sampling method ACQUIRE Setting the display mode DISPLAY a Storage and recall STORAGE 14 UTD2000L User Manual Setting the help system UTILITY Automatic measurement MEASURE Cursor measurement CURSOR Using the execution buttons AUTO RUN STOP It is recommended that you read this chapter carefully to understand the various measurement functions and system operation steps of your UTD2000L Series oscilloscope UTD2000L User Manual Setting the Vertical System CH1 CH2 and setups Each vertical channel has its own vertical menu You should set up each item for each channel individually Press the CH1 or CH2 function button and the system will display the operation menu for CH1 or CH2 For explanatory notes please see Table 2 1 below Table 2 1 poem notes for channel
10. Trigger when pulse width is larger than default value Trigger when pulse width is smaller than default value Trigger when pulse width equals to default value Set the pulse width at 20ns 10s and adjust by turning the multifunction control knob on the upper front panel Move to next page 29 LINII T 30 Table 2 8 Polarity Coupling Setup Positive Negative Auto Normal Single DC AC HF Reject LF Reject UTD2000L User Manual Explanatory Note Set positive pulse width as the trigger signal Set negative pulse width as the trigger signal 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 The system stops acquiring data when there is no trigger signal When the trigger signal is generated trigger scan occurs Onetrigger scan will occur when there is an inputtrigger signal Then trigger will stop Allow AC and DC quantities ofthe trigger signal to pass Intercept DC quantities ofthe trigger signal Intercept high frequency quantities of the signal only allow low frequency quantities to pass Intercept low frequency quantities of the signal only allow high frequency quantities to pass Next page2 2 Return to previous page UTD2000L User Manual UNE Alternate Trigger When alternate trigger is selected the trigger signal will be prese
11. injury due to the presence of moisture please ensure the product is completely dry before reconnecting power for operation UTD2000L User Manual Index Alphabet DSO A0 EXT 33 FFT resolution 23 FFT frequency analysis 41 USB 1 1 X Y mode 24 Y Tmode 24 Chinese Negative duty ratio 47 Positive duty ratio 48 Amplitude 47 UE LEE 47 General check 5 Generalcare 78 Rise time 49 Falltime 47 System prompts 69 Refresh rate 38 Single trigger 34 Ar o s eea E E 21 Vertical system 9 Grid 28 Acquisition 35 Cursor measurement
12. sampling system function Press the UTILITY button to pop out the setup menu for utility functions Table 2 18 Utility function menu page 1 Function Menu Setup Explanatory Note Selt Adj Execute Runautocalibration Cose Cancel auto calibration and return tothe WA o o o oo page Ee Een Table Fssuptorrecordingthewavelorm 1 for recording the waveform 2 21 Simplified Language Ch Boa Selectthe language interface Traditional Chinese English Nextpage 1 3 Gotothenextpage Table 2 19 Utility function menu page 2 Function Meng Setup Explanatory Note pen E Setting the factory setup recall Skin 1 Setting the interface designs 2 Two designs mono display i four designs colour Grid mem eom ya Store thesettng __ Table 2 20 Utility function menu page 3 Function Menu Setup Explanatory Note Version Display the current system information ofthe oscilloscope Cymometer ON Frequency counter is on OFF Frequency counter is off Firstpage3 3 Returntothefirstpage 43 LJNI T UTD2000L User Manual Table 2 21 Waveform record menu 1 Table 2 22 Waveform record menu 2 Press OPERATION to enter See the above table Press UTILITY to enter Function Menu Setup Explanatory Note Source Chi Select CH1 as the recording signal Function Menu source Ch2 Select CH2 as the recording signal source CH1 CH2 Select CH1 CH2 as the recording signa
13. the delay and time lapse caused by a sine wave signal passes through the circuit 54 Illustration 3 Acquiring single signals 55 Illustration 4 Reducing random noise of signals 56 Illustration 5 Using the cursors for measurement 58 Illustration 6 Using the X Y function 59 Illustration 7 Using the USB upgrade programme 60 Illustration 8 Screen Copy 2 222 n en nner nen renee rence nn ee re renee 68 UTD2000L User Manual Item Page Chapter 4 System Prompts and Trouble shooting 69 Definitions of System Prompts 69 Troubleshooting mnm emm 69 Chapter 5 Service and Support 71 Chapter 6 Technical IndicatorS 72 AppendixA Technical indicatorS 72 Appendix B Accessories for UTD2000L Series Digital Storage Oscilloscope 78 Appendix C Maintenance and Cleaning
14. 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 LINII T Change the vertical setup and observe changes of status information You can identify changes of any vertical range by reading the status display column at the lower corner of the waveform window Turn the vertical SCALE knob to change the vertical VOLT DIV range You will find that the range in the corresponding channel has changed accordingly Press CH1 CH2 or MATH and the screen will show the corresponding operation menu sign waveform and range status information Press the corresponding button for the currently activate channel again to close the selected channel UTD2000L User Manual Getting to Know the Horizontal System As shown in the figure below there are one button and two knobs in the horizontal control zone The following steps will get you familiar with horizontal time base setup HORIZONTAL 4 POSITION ap e Figure 1 10 Horizontal control zone on the front panel UTD2000L User Manual Use the horizontal SCALE knob to change the horizontal time base range setup and check any changes i
15. 1 Toquickly display this signal follow the steps below D Inthe probe menu set the attenuation factor to 10X and set the switch on the probe to 10X 9 Connectthe 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 Voltage and time parameters for automatic measurement Your oscilloscope can automatically measure most display signals To measure signal frequency and peak to peak value follow the steps below D Press MEASURE to display the automatic measurement gg menu 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 select time Press F2 to select measurement type frequency Peak to peak value and frequency measurement value are now displayed in positions F1 and F2 respectively M Pos 0 0015 Figure 3 1 Automatic measurement 53 LINII T 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 signal input
16. 2 BothDC andAC quantities of the signal are displayed UTD2000L 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 H Pos 0 005 CHI Coupling GND Ground coupling BW Limit setu p Volts Div Coarse Probe 1x Chi 500m O Off M200ns Math Off ECHI A 1 Figure 2 3 Screen display in ground mode 2 Setting channel bandwidth suppression Bandwidth suppression can suppress high frequency quantities over 20MHz or noise in the signal being tested Application is as follows Press CH1 to turn 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 M Pos 0 00j1s ES CHI Coupling BW Limit D Bandwidth suppression off Volts Div Co Off M 200ns r EE P1 Figure 2 4 Waveform display when bandwidth suppression is off 17 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 M Pos 0 00s P CHI Coupling DC sies Bandwidth open suppression Em 20MHz Probe 10X Invert 500VBw Ch2 Off M100ns Close Math Off Hu 0 00m Bandwidth suppression icon Figure 2 5
17. 2000L Series computer test and control software 2 UTD2000L User Manual Forthe setup storage menu see Table 2 16 M Pos 0 00 5 500mV Math Off Figure 2 24 Storage setup Table 2 16 Setting the storage menu Function Menu Setup Sep Setups 1 20 1 200 sxe Recall Explanatory Note Select the front panel setup menu Maximum 20 front panel setups can be stored with the multifunction control knob on the front panel 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 Store the setting Recall the setting 41 UNI T 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 Explanatory Note Selectthe bitmap menu Maximum 200 bitmap data can be stored Select with the multifunction control knob at the top of the front panel data can only be stored on the USB device Store the bitmap data 42 UTD2000L User Manual w Bit Map Type Bit Map Chi WSA Ch2 Off Math Off 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 UTD2000L User Manual MULTI PURPOSE T PUSH SELECTED Figure 2 26 Function key for the
18. BLACK ZS UTD2000L OPERATING MANUAL Digital Storage Oscilloscope Introduction Dear valued customer Thank you for purchasing a Uni Trend 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 Uni Trend product or in an easily accessible place UTD2000L User Manual Copyright Information LINI T Uni Trend Technology Dongguan Ltd All rights reserved products are protected by patents granted and pending in the People s Republic of China and other countries LINI T The Company reserves the right to change product specifications and prices UNI T all rights reserved All licensed software products are properties of Uni T and 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 LINI T is the registered trademark of Uni Trend Technology Dongguan Ltd LINII T 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 o
19. BW Limit Close Volts Div Coarse Invert 500my Off EVER Close ut Off HOT Z Figure 1 7 Probe compensation signa LJNI T 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 it is well connected to the probe Connect the probe tip to the output terminal of the probe compensator s signal connector and the ground clamp to the ground cable connector of the probe compensator Activate CH1 then press AUTO 2 Observe the displayed waveform MM SLU rn Overcompensation Correct Compensation Undercompensation Figure 1 8 Probe compensation calibration UTD2000L 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 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 Di
20. CY SUPPRESSION to filter any high or low frequency noise thatis interfering with triggering No display after pressing RUN STOP D Checkifthe TRIGGER MODE 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 UTD2000L User Manual MODE to AUTO Press AUTO to complete the automatic setup Display speedis slow after average sampling time is enabled D Ifaverage sampling is carried out for more than 32 times the display speed will drop This is normal Youcanreducethe intervals of average sampling Trapezoidal waveform display D 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 amp 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 UTD2000L User Manual Chapter5 Service and Support Warranty UTD2000L Series Digital Storage Oscilloscope UNI T Uni Trend Electronic Shanghai Limited warrants that product produced and marketed by it will be free from defects in materials and workmanship for a period of three years from the date of shipment by the authorized dealer If any such product proves defective during this warranty period UNI T will repair the defective p
21. Getting to Know the Trigger System 12 Chapter2 Instrument Setups 14 Setting the Vertical System 15 Setting the Horizontal System 23 Setting the Trigger System 27 Alternate Trigger 31 Setting the Sampling System 35 Setting the Display System 37 UTD2000L User Manual UTD2000L User Manual Item Page Storage and Recall 38 Utility Function Setup 42 Automatic Measurement 45 Cursor Measurement 50 Using the Run Button 51 Chapter3 Practical Example Illustrations 53 Illustration 1 Measuring simple signals 53 Illustration 2 Observing
22. INE 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 You can 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 33 LINII T 2 3 34 Trigger mode Determine the action of your oscilloscope at no trigger This oscilloscope offers three trigger modes for selection auto normal and single W 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 automatically 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 W Normal Trigger In this mode your oscilloscope samples waveforms only when
23. Waveform display when bandwidth suppression is on 18 UTD2000L User Manual 3 Setting the probe rate To match the probe attenuation factor setup itis 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 set at 10 1 UZATA CHI Coupling oc BW Limit Volts Div factor Ch2 Off W 100ns HIH n 0 00mV Vertical range movement Figure 2 6 Setting the probe attenuation factor in the channel menu UTD2000L 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 19 LINI T UTD2000L User Manual l Operating Math Functions Table 2 2 Explanatory notes for the Math menu Math
24. accuracy gt 16 average values 1sampling time interval 50ppm x full bandwidth reading 0 4ns 73 Verticall UTD2000L User Manual 8 bit resolution Deflection factor range VOLTS DIV 9 1 mV div 20V div at input BNC DC gain accuracy DC measurement accuracy average acquisition mode 74 Position range Analog bandwidth Single bandwidth Selectable analog bandwidth limit Typical Low frequency response AC coupling 3dB Rise time Voltage difference AV measurement accuracy average acquisition mode 10div 100MHz UTD2102CEL 50MHz UTD2052CL UTD2052CEL 100MHz UTD2102CEL 50MHz UTD2052CL UTD2052CEL lt 10Hz at BNC 3 5ns 7ns at 100MHz and 50MHz bandwidths respectively 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 When vertical position is zero and N 216 t 596 x reading 0 1 div 1mV and 1mV div 2mV div is selected t 496 x reading 0 1 div 1mV and 5mV div is selected t 396 x reading 0 1 div 1mV and 10mV div 50V div is selected When vertical position is not zero and N 216 t 396 x reading vertical shift reading 1 x vertical shift reading 0 2div Set from 5mV div to 200mV div plus 2mV Setup value 200mV div to 50V div plu
25. age menu shown below see Figure 2 16 Astored waveform can be recalled with the call back function under waveform storage UTD2000L User Manual Table 2 14 Waveform storage menu page 1 FunctionMenu Setup Explanatory Note Type Wave Select the waveform storage and recall menu CH1 Selected signal is from CH1 CH2 Selected signal is from CH2 WW Pos 0 00s Chi Mis Math Off Dest 1 20 Turn the multifunction control knob to set the waveform storage position on the internal memory 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 Storethewaveform Nextpaget a Gotothenextpage Figure 2 22 Storingthe waveform 39 k USB Length Normal Load L KK Dh2 Off Lp Math Off Figure 2 23 Storing a waveform on the USB 40 UTD2000L User Manual Table 2 15 Waveform storage menu page 2 FunctionMenu Setup Explanatory Note Disk DSO USB Lenght Normal Long Previous 2 2 ee Returnto the previous page Select the internal memory of the oscilloscope Select the external USB This function can only be used with the USB key plugged in Select normal storage depth Select 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 function of the UTD
26. age sampling mode the waveform display will update ata slower rate This is normal 57 LINII T 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 voltage of a waveform Measuring one step voltage ofthe 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 cursor type 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 ofthe 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 setthe cursor typeto time 58 UTD2000L User Manual Cursor Type Volt Figure 3 6 Using the cursors to test signal voltage UTD2000L User Manual lllustration6 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 outpu
27. 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 Uni T has no obligation to provide the following services a Repairing any damage arising from installation repair or maintenance carried out by a non Uni T 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 Uni T d Servicing a product that has been modified or integrated with other products such modification or integration makes repair more time consuming and difficult UTD2000L User Manual This warranty is made available to this product specifically and supercedes all other previous warranties whether express or implied Uni T and its dealers will not make any implied guarantee on the salability or suitability of this product for any specific purpose In the event of breach of warranty terms and conditions repair or replacement of defective product shall be the only and all remedial measure offered by Uni T Notwithstanding any prior notification of potential damage that is indirect special consequential or inevitable Uni T andits dealers shall bear no liability for any such damage Safety Instructions This unitis designed and manufactured strictly in accordance with GB4793 safety requireme
28. calibration frequency is 1 year nvironmental Temperature UNI T Appendix B Accessories for UTD2000L Series Digital Storage Oscilloscope Standard Accessories 78 Two 1 5m 1 1 10 1 passive voltage probes For details please read the probe manual EN61010 031 2002 standard Rating is 150V CAT II when the switch is in the 1X position Rating is 300V CAT Il when the switch is in the 10X position One international standard power cord One User Manual One Product Warranty Card UTD2000L communication amp control software USB connection cable UT D05 UTD2000L User Manual 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 Inspectthe oscilloscope and probes as often as operating conditions require To cleanthe exterior surface follow these steps 1 Remove dust on the outside of the oscilloscope and probes with a softcloth When cleaning the LCD use care to avoid scratching the clear protection film ofthe LCD Use a dampened 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 probe do not use abrasive chemical cleaner Warning To avoid short circuit or personal
29. cilloscope 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 centre 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 in the trigger mode and normal and single mode TRIG MENU Button for the trigger setup menu Trigger Control Trigger modes edge pulse and alternate 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 27 LINII T UTD2000L User Manual Table 2 6 FFTWindow Feature Most Suitable Measurement Item Set CH1 asthe signal source trigger signal Set CH2 as the signal source trigger signal Set the external trigger input channel as the signal source trigger signal Setu
30. d at a fast rate HN 1s The waveform on the screen is refreshed at 1s 2s The waveform on the screen is refreshed ata2s 5s The waveform on the screen is refreshed ata5s 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 Infinite 38 UTD2000L User Manual Storage and Recall As shown below the STORAGE button in the MENU control zone is the function key for the storage system RUN wem pei pm CURSOR DISPLAY UTILITY AUTO PUSH SELECTED Figure 2 21 Function key for the sampling system storage MULTI PURPOSE va Press the STORAGE button to display the storage setup menu You can use this menu to save waveforms or setup status of the oscilloscope in the internal memory orthe 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 oscilloscope s waveform display in bitmap format on the USB device under the UTD2000L 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 goto the waveform stor
31. de Ditto Overshoot Ditto Next page 1 4 Turn page UTD2000L User Manual Table 2 25 Function Measurement Explanatory Note Return to the previous page Select to return to the parameter measurement display menu and replace the original parameter in that position SSC Next 2 4 Table 2 26 Function Measurement Explanatory Note Return to the previous page High Select to return to the parameter measurement display menu and replace the original parameter in that position Midde Ditto 1 1 Table 2 27 Function Measurement Explanatory Note Return to the previous page Max Select to return to the parameter measurement display menu and replace the original parameter in that position Ditto 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 28 Function Measurement Explanatory Note Return to the previous page Freq Select to return to the parameter measurement display menu and replace the original parameter in that position Rise 1 Ditto 1 3 5 7 Next 3 4 Next 1 3 49 LINII T Table 2 29 Function Measurement Explanatory Note Return to the previous page Fall Select to return to the parameter measurement display menu and replace the original parameter in that position Width Width Next 2 3 Table 2 30 Function Measurement Explanatory No
32. e 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 Checkthe accessories Achecklist of accessories that come with your UTD2000L oscilloscope is provided in the section Accessories for UTD2000L 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 UNI T dealer or our local office 3 Thorough inspection of the entire unit If the exterior of the unit is damaged or it is not operating normally or it fails to pass the performance test please contact your UNI T dealer or our local office In the event of any shipping damages please retain the packaging and notify our shipping department or your Uni T dealer We will be glad to arrange maintenance or repair Functional Check Carry out a quick functional check in the following steps to make sure your oscilloscope is operating normally 1 Power ontheunit 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 abov
33. e steps press CH1 to enter the CH1 menu LINII T Lem Power switch Function key Figure 1 4 To avoid danger ensure the digital storage oscilloscope is safely grounded UTD2000L User Manual 2 Accessing signals Your UTD2000L oscilloscope has dual input channels and an external trigger input channel Please access signals in the following steps D Connect the probe of the digital storage oscilloscope to the CH1 input terminal and set the attenuation switch of the probe to 10X Figure 1 5 Figure 1 5 Setting the attenuation switch of the probe UTD2000L User Manual 2 You 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 E Limit Probe ration Figure 1 6 Setting the deflection factor of the oscilloscope probe 3 Connectthe probe tip and ground clamp to the connection terminal for the probe compensation signal Press AUTO and you will see a square wave in the 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 Trig d M Pos 0 00us CHI Coupling AC
34. eform parameters Automatic cursor tracing measurement function Unique waveform recording and replay function Built in FFT Multiple waveform mathematics functions including add subtract multiply and divide Edge pulse width and alternate trigger functions Multilingual menu displays Help messages in English and Chinese UTD2000L User Manual UTD2000L accessories 2x1 5m 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 of use User Manual Product Warranty Card USB connecting cable UT D05 two terminal USB HOST plug UTD2000L oscilloscope communication control software USB device Table of Contents Item Safety Instructions Preface Chapter1 User Guide 1 General Inspection 5 Functional Check 5 Probe Compensation 8 Automatic Setup for Waveform Display 8 Getting to Know the Vertical System 9 Getting to Know the Horizontal System 10
35. elow to find the cause D Checkthe power cable connection and check if there is normal power supply 2 Check ifthe power switch is properly pressed amp Restartthe unit after performing the above checks QD Ifthe unit still fails to work contact UNI T to request service 2 l fnowaveformis displayed after you have acquired a signal follow the steps below to find the cause D Check whether the probe is properly connected to the signal lead Check whether the signal lead is properly connected to the BNC channel adaptor amp Check whether the probe is connected properly to the object to be measured LU Check whether the object for measurement is generating signals connect the channel with signals to the questionable channelto find the cause Restartthe acquisition process 69 LINII T 70 The measurement voltage amplitude value is 10 times larger or smallerthan the actual value Check if the channel attenuation factor corresponds with the probe attenuation you have chosen There is waveform display but itis 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 FREQUEN
36. ersion 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 for 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 Figure 3 20 Low software version Software document incompatible with product model If the 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 UTD2102CEL then repeat the USB update steps Program Update System Figure 3 21 Incompatible software document and product model 67 LINII T Illustration 8 Screen copy You can press the screen copy key PrtSc to intercept a full screen To use this function follow the steps below 1 Press the screen copy key PrtSc copying is done when the completion screen is displayed 2 Store the intercepted graphic on the USB device Insert the USB device pres
37. ffset 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 oscilloscope to average acquisition Select the FFT Window Assuming the YT waveform is constantly repeating itself the oscilloscope will carry out FFT conversion of time record of a limited length When this cycle is a whole number the YT waveform will have the same amplitude at the start and finish There is no waveform interruption However if the YT waveform cycle is not a whole number there will be different amplitudes at the start and finish resulting in transient interruption of high frequency at the connection point In frequency domain this is known as leakage To avoid leakage multiply 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 21 LINII T 22 Table 2 4 FFT Window Feature Rectangle The best frequency recognition rate the worst amplitude recognition rate Basically similar to a status without adding window y recognition rate the worst amplitude recognition rate Basically similarto a status without adding window Hanning Frequency recognition rate is better than the rectangle window but amplitude recognition rate is poorer Hamming Frequency recognition
38. functions are displays of x and FFT mathematical FunctionMenu Setup Explanatory Note results of CH1 and CH2 waveforms The menuis as follows Tocarry out x functions Source 1 Set signal source 1 as CHI waveform Set signal source 1 as CH2 waveform Hath Type Hath Operator Signal source 1 Signal source 2 Signal source 1 Signal source 2 Signal source 1 x Signal source 2 Signal source 1 Signal source 2 Source 2 Set signal source 2 as CH1 waveform Set signal source 2 as CH2 waveform FFT spectrum analysis By using the FFT Fast Fourier Transform algorithm you can convert 1 time domain signals YT into frequency domain signals With FFT you Math range can conveniently observe the following types of signals H e Measure the harmonic wave composition and distortion of the Figure 2 10 Math functions P signal e Measure the noise characteristics of the DC power e Analyse oscillation 20 UTD2000L User Manual Table 2 3 Explanatory notes for the FFT menu Function Menu Setup Explanatory Note Type FFT To carry out FFT algorithm functions Source Chi Set CH1 as math waveform Ch2 Set CH2 as math waveform Window Hanning SetHanning window function Hamming Set Hamming window function Blackman SetBlackman window function Rectangle SetRectangle window function Vertical Vrms Setthe vertical unitto Vrms or DBVrms dBVrms Howto use FFT functions Signals with DC quantities or DC o
39. l source Replay F2 Operation Enter the next page for the recording operation menu as shownin Table 2 22 Save 1230 Select the save position for USB waveform recording Load 1230 Select the recall position of the USB waveform Return to the first page Stop F3 Return F4 44 Explanatory Note Record button Press this button to record The number of screens recorded is displayed at the bottom ofthe screen 1 Playback button 2 When you press this button the system plays back The number of the screen being played is displayed in the bottom right corner By turning the multifunction control knob on the upper front panel you can suspend playback Turn the knob further and you can select the waveform of a certain screen to be played back repeatedly If you wish to continue full playback press F3 to stop and then press F2 You can record as many as 1 000 screen data Stop recording Return to the previous page UTD2000L 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 UTD2000L Series Digital operated in many languages Storage Oscillosc
40. l storage oscilloscope series Guidance is given in several chapters as follows Chapter 1 User Guide Simple guide to oscilloscope functions and installation Chapter 2 Instrument Setups Guide to operation of the UTD2000L digital storage oscilloscope series Chapter 3 Practical Example Illustrations Example illustrations are provided to solve various testing problems Chapter 4 System Prompts and Trouble shooting Chapter 5 Servicing and Support Chapter 6 Appendixes Appendix A Technical Indicators Appendix B Accessories for UTD2000L Series Digital Storage Oscilloscope Appendix C Maintenance and Cleaning Appendix D Chinese and English Cross Reference Table for the Front Panel The UTD2000L Digital Storage Oscilloscope Series UTD2000L oscilloscope offer user friendliness outstanding technical indicators and a host of advanced features They are your perfect tools to complete testing tasks swiftly and efficiently This manual is a user guide for 3 models of the digital storage oscilloscope series Model Bandwidth Real time Sampling Rate Display UTD2052CEL 50MHz 1GS s UTD2102CEL 100MHz Color UTD2052CL 50MHz 500MS s UNI T UTD2000L Oscilloscope 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
41. ldoff Time You can adjust the holdoff time to observe complicated waveforms e g pulse string series Holdoff time means the waiting time for the trigger circuit to be ready for use again when the oscilloscope is restarted During this time the oscilloscope will not trigger until the holdoff is complete For example if you wish to trigger one group of pulse series at the 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 Table 2 11 Function Menu Setup Explanatory Note 1 Enable main time base 2 If window extension is enabled press main time base to disable window extension Window Enable time base extension Hold off Adjust holdoff time UTD2000L User Manual Trigger position 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 level to make the waveform display as stable as possible 2 Press the horizontal HORI MENU key to display the horizontal menu 3 Adjust the multifunction control knob in the upper front panel The holdoff time will change accordingly until the waveform display is stable Definitions 1 Trigger source Trigger can be obtained from various signal sources Input channel CH1 Ch2 external trigger EXT L
42. ling 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 significant in 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 Setting the Display System As shown below the DISPLAY button in the control zone is the function key forthe display system MULTI PURPOSE RUN e MEASURE ACQUIRE STORAGE hsa CURSOR DISPLAY UTILITY AUTO PUSH SELECTED Figure 2 20 Function key for the sampling system display Press the DISPLAY button to pop out the setup menu shown below You can use this menu to adjust the display mode 37 LINII T Table2 13 Display menu Function Menu Setup Explanatory Note Type Vector Sampling points are linked for display Only sampling points are displayed GNO BEBE mode ofthe oscilloscope X Y isthe display mode CH1 is X XS De CH2 is Y input The waveform on the screen is refreshe
43. ly before and after triggering By turning the horizontal POSITION knob in the horizontal control zone on the front panel you can change the trigger position horizontally to achieve negative delay trigger of various lengths for easy observation of waveform occurring before the glitch 55 M Pos 0 005 Trigger Type Edge Source CHI Slope Rise Mode Single Coupling Figure 3 3 Single signal 56 UTD2000L 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 H Pos 0 00us Acquire Mode Sample Sampling Equ time Fastiteg OFF Bw Gh2 Off M500 CHI 0 00mV Figure 3 4 Reducing random noise of signals Steps 1 Asin 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 UTD2000L User Manual 3 Improving trigger 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 fre
44. mencement of update the following prompt will appear USB device has been removed Please reboot To resume normal operation power on the oscilloscope with the USB device unplugged Program Update System Anne LARS PS Se z E sing USB U Figure 3 17 USB device is removed before update 65 LINII T 4 66 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 UTD2000L User Manual 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 Figure3 18 Incorrect update document version Figure 3 19 Reading failure UTD2000L User Manual Low software version If the v
45. menu SS E CD BW Limit Open Close Volts Div Coarse Fine E d E d Explanatory Note Intercept the DC quantities of the input signal Pass AC and DC quantities of input signal Disconnect input signal Limit bandwidth to 20MHz to reduce noise display Full bandwidth Coarse tune in steps of 1 2 5 to set up the deflection factor of the vertical system Fine tune means further tuning within the coarse tune setup range to improve the vertical pixel aspect ratio Select either one value based on the probe attenuation factor to keep the vertical deflection factor reading correct There are four values 1x 10x 100x and 1000x Waveform invert function on Normal waveform display 15 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 select AC Itis now set up as AC coupling DC quantities of the signal being tested will be intercepted The waveform display is as follows M Pos 0 00us CHI Coupling AC AC coupling setup BW Limit Volts Div Invert Off hi 2 00ms Close ECHI P 0 00m Figure 2 1 DC quantities of the signal are intercepted 16 UTD2000L User Manual Press F1 to select DC Both DC and AC quantities of the testing signal being inputted to CH1 can pass through The waveform display is as follows M Pos 0 00 5 ze CHI Coupling DC coupling setup Figure 2
46. n time base range Turn 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 UTD2000L 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 is 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 setthe holdoff time with this menu 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
47. nt in two vertical channels This triggering mode is suitable for observing two Table2 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 menuis listed in Table 2 9 Settrigger mode to edge Source Open time base extension M Pos 0 00 5 Trigger Type Edge Inclination Rise Set trigger inclination as rising edge Mode Set trigger mode to automatic Coupling Set trigger coupling mode to AC Alternate trigger can also be used to compare pulse width Figure 2 15 Observing two signals of different frequencies in the alternate trigger mode 31 LINII T Setup for Trigger coupling mode Enter the trigger setup menu to set up the trigger coupling mode and achieve the most stable synchronization The trigger coupling menu is as follows Table 2 10 FFT Window Featue Most Suitable Measurement Item Tyee Ee Slope Rse Set trigger Inclination as rising edge Set CH1 an CH2 toalternate trigger 32 HF Reject LF Reject Set trigger mode to automatic Intercept DC quantities to pass Allow all quantities to pass Intercept high frequency quantities of the signal only allow low frequency quantities to pass Intercept low frequency quantities of the signal only allow high frequency quantities to pass UTD2000L User Manual Adjusting the Ho
48. nts for electronic testing meters and IEC61010 1 safety standards It fully meets CAT II 600V insulation and overvoltage requirements and Grade II anti pollution safety standards To prevent personal injuries and damage ofthis unit or any other devices connected to it please take note of the following safety precautions To avoid potential hazards use this unit strictly as instructed by this User Manual Maintenance should only be carried out by a trained professional To avoid fire and personal injury Usea correct power cable Use only the specified power cable which is authorized in the country of use Remove the plug correctly Do not remove the probe or testing cable when they are connected to power Ensure good grounding This unitis grounded by the ground wire of the power cable To avoid electric shock the grounding conductor must touch the ground Before connecting the input or output terminal ensure the unitis properly grounded Connectthe probe of the digital storage oscilloscope The probe ground cable is 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 Readthe manual carefully and checkthe rated values before connecting the unit Do not operate the unit with the chassis cover open Do not operate this unit when the outer cove
49. o 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 measurementtype 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 at position 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 46 UTD2000L 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 of a certain signal source and the rising edge of the first cycle of another signal source Measure as follows 1 In the measurement menu as shown in the previous example select the display zone for delayed measurement value time type page 3 3 2 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 measurement is now displayed in your specified zone UTD2000L User Manual Automatic measurement of voltage parameters Your UTD2000L Series Oscilloscope can automatically measure the following voltage parameters
50. ontal 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 data can help you identify the cause of glitch Attenuating high UTD2000L User Manual Settingthe Sampling System As shown below ACQUIRE button in the control zone is the function key for the sampling system MULTI PURPOSE 0G MEASURE ACQUIRE CURSOR DISPLAY PUSH SELECTED RUN STOP AUTO UTILITY Figure 2 17 Function key for the sampling system Press the ACQUIRE button to pop out the sampling setup menu You can use this menu to adjust the sampling mode Table 2 12 Sampling menu FunctionMenu Setup Explanatory Note Turn on the ordinary sampling mode Turn on the peak detect mode Set to average sampling and display the average number of times 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 Average Sampling Realtime Equ time Set sampling to real time sampling Set sampling to equivalent sampling FastACQ ON Quick acquisition function is on OFF Quick acquisition function is off 35 By changing the acquisition setup you can observe the consequent changes in waveform display If the signal contains considerable noi
51. ope can be 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 UTD2000L Series Oscilloscope MULTI PURPOSE MEASURE ACQUIRE STORAGE bred CURSOR DISPLAY UTILITY AUTO 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 measurement type of any zone press the corresponding function key to enter the type option menu 45 LINI T 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 t
52. opped 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 band of waveform to check image details Please refer to Figure 2 13 UTD2000L User Manual Horizontal extension ofthe waveform Window Time base extension Hold off a 100 00ns Horizontally extended part of the waveform 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
53. p as grid trigger Ch1 CH2trigger their own signals alternately Set to trigger on the signal s rising edge Set to trigger on the signal s falling edge Set to trigger on the signal s rising and falling edges Set to sample waveform only if no trigger condition is detected Set to sampling waveform only when trigger condition is met Set to sample waveform once when detecting one trigger and then stop Coupling AllowAC and DC quantities of the input signal to pass 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 28 UTD2000L User Manual Pulse Width Trigger Pulse width trigger means determining the triggering time based on the trigger width You can acguire abnormal pulse by setting the pulse width condition Table 2 7 P 1 FunctionMenu Setup 1 Explanatory Note Set CH1 asthe signal source trigger signal Set CH2 as the signal source trigger signal Set the external trigger input channel as the signal source trigger signal Setup as grid trigger CH1 CH2 trigger signals alternately
54. pe meets specifications it must first meet the following conditions The oscilloscope must have been operating continuously for thirty minutes at the specified operating temperature E If the operating temperature changes by more than 5 C you must perform the Self Cal operation accessible through the system functions menu All specifications are guaranteed unless noted Typical 72 UTD2000L User Manual Technical Indicators Sampling modes UTD2102CEL UTD2052CEL UTD2052CL Realtime sampling 1GS s 500MS s Equivalent sampling 50GS s 25GS s Bandwidth Bandwidth 100MHz 50MHz Sampling Sampling peak detect average When all channels have made N samplings 50MHz simultaneously N is selectable from 2 4 8 16 32 64 128 to 256 Input coupling DC AC GND Inputimpedance 1MQ 2 in parallel with 20 3pF Probe attenuation factor 1x 10x 100x 1000x Maximum input voltage 400V DC AC Peak 1MQ input impedance Time delay between channels Typical 150ps LU Ur UTD2000L User Manual m NN Waveform interpolation Recording length aving depth Scanning range s div 2ns div 50s div UTD2102CEL UTD2052CEL at 1 2 5 increment 5ns div 50s div UTD2052CL at 1 2 5 increment Accuracy of sampling rate Koo and delay time 50ppm any time interval 1ms Time interval T Single 1 sampling time interval 50ppm x reading 0 6ns Measurement
55. pear when F5 is pressed after powering on Can t find the valid update file Please ensure there is update file on the USB device then restart the operation Program Update System fe REALE ELTE Welcome you are using USB Update program V3 25 Figure 3 13 No valid update document 63 LINII T 2 Theusercancels 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 64 UTD2000L 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 TE AA Welcome v mmi you are using USB Update program V3 2 Figure 3 15 Cancel update 2 UTD2000L User Manual Youcan 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 Figure 3 16 Cancel upgrade 3 The USB device is removed before update begins Ifthe USB device is removed when the update document is being read before com
56. practices of traditional instruments users can use the new units without spending considerable time in learning 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 UTD2000L Oscilloscope have the high performance indicators and superb functions required for speedy execution of measurement tasks Thanks to 1GS s UTD2052CEL UTD2102CEL 500MS s UTD2052CL real time sampling and 25GS s equivalent sampling you can observe higher Speed signals with your UTD2000L 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 UTD2000L series can fully satisfy your testing and measurement requirements UTD2000L User Manual Dual analog channels width range 1 mV div 20 V div High definition color LCD system 800 x 480 resolution Supports plug and play USB storage device Communication with and remote control of computer through the USB device Automatic waveform and status configuration Storage of waveforms setups and interfaces waveforms and setups reproduction Fine window extension precise analysis of waveform details and overview Automatic measurement of 28 wav
57. quency suppression a high pass filter is set up It filters low frequency signal quantities under 80kKHz 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 setting LOW FREQUENCY SUPPRESSION or HIGH FREQUENCY SUPPRESSION you can suppress low frequency or high frequency noise respectively and achieve a stable trigger 4 Reducing display noise by setting the sampling mode 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 reduced and details of the 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 Figure 3 5 Signal noise suppressed You can also lower the waveform brightness to reduce display noise Caution In the aver
58. r or front panel is open UNI T 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 suspecta fault aska qualified maintenance professional to carry out inspection Maintain good ventilation Do not operate in humid condition 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 result in injury or loss of life Caution Caution statements identify conditions or practices that could result in damage to this unit or other properties UTD2000L 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 Refer to manual Protective Ground terminal Ground terminal ground terminal for chassis fortesting UTD2000L User Manual Preface This manual provides information on the operation of the UTD2000L digita
59. rate is marginally better than Hanning window Blackman The best amplitude recognition rate and the poorest frequency recognition rate Definition UTD2000L User Manual Most Suitable Measurement Item Temporary or fast pulse Signal level is generally the same before and after Equal sine wave of very similar frequency There is broad band random noise with slow moving wave spectrum Sine cyclical and narrow band random noise Temporary or fast pulse Signal level varies greatly before and after Mainly for single frequency signals to search for higher order harmonic wave 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 UTD2000L User Manual Setting the Horizontal System The horizontal shift knob You can move the waveform on the screen with the horizontal shift knob By turning it clockwise you can shift the waveform to the left to see more pre trigger signals Contrarily turning it anticlockwise can display more post trigger signals Horizontal scaling Adjust the main time base i e s div When time base extension is on you can
60. ration Press AUTO and the oscilloscope can automatically adjust the 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 setup is as follows 51 LINII T Table 2 32 Function Menu Acquisition mode SEC DIV Trigger mode Trigger source Trigger inclination Triggertype Vertical bandwidth VOLT DIV 52 Setup Sampling Setto YT Automatic adjustment Adjust according to signal frequenc AC Set at 50 Set to CH1 but if there is no signal in CH1 and CH2 applies a signal it will set to CH2 Rising 0 Adjust according to amplitude of the signal UTD2000L 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 In the 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 UTD2000L User Manual Chapter 3 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
61. 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 4 When F5 is pressed as shown in Figure 3 9 the prompt on the device the following screen will not appear The system will move right willappear Are you sure you wish to update If yes press straightto the next step F5 otherwise press F1 to cancel upgrade 61 Program Update System Figure 3 10 Confirming the USB update document 5 When the USB document is confirmed the following prompt will appear System upgrade is in progress Please wait This process may take 3 to 5 minutes 62 UTD2000L User Manual Program Update System Figure 3 11 USB upgrade in progress 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 UTD2000L User Manual Program Update System Figure 3 12 Successful USB update 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 ap
62. riginal purchaser acquired the product from Uni T 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 Uni T has the option to repair the defective product without any charge for parts or labor or replace it with another product atthe discretion of Uni T Uni T 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 Uni T 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 Uni T 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 Uni T The customer should also prepay all freight cost and provide a copy of the UTD2000L User Manual original sales receipt issued to the original purchaser If the product is to be delivered to an address within the country where the maintenance centre operates Uni T shall pay the cost of returning the productto 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 normal wear
63. rm 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 select the cursor 2 Coarse tune fine tune To adjust the cursor moving speed 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 and 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 5 When the cursor function is enabled measurement value is automatically displayed in 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 in a running status If a red light comes on after pressing this button it indicates the unit has stopped operation MULTI PURPOSE MEASURE ACOUIRE STORAGE RUN STOP CURSOR DISPLAY UTILITY AUTO PUSH SELECTED Figure 2 29 RUN STOP button Auto Setup As shown above auto setup can simplify ope
64. roduct or provide a replacement according to specific terms and conditions of the warranty To request maintenance and repair service or a full copy of the warranty please contact your nearest UNI T sales and maintenance office Save and except the guarantee given herein or in other applicable warranty UNI T makes no other express or implied guarantee including but not limited to any implied guarantee on the product s tradability and suitability for any specific purpose Under no circumstance will UNI T bear any liability for any indirect special or subsequent loss ContactUs If you encounter any inconvenience in using this product contact Uni Trend Electronic Shanghai Limited Uni T Inc in China directly Office hours 8 00am 5 30pm Beijing Time Monday to Friday Alternatively email us at infosh uni trend com cn For product support outside China contact your local UNI T supplier or sales centre Service Support Many UNI T products offer optional plans of extended warranty period or calibration period For details please contact your local UNI T supplier or sales centre Alistof service centres worldwide is available online at http www uni trend com 71 LINII T Chapter6 Appendixes Appendix A Technical Indicators Unless otherwise specified all technical specifications apply to probes with attenuation setting of 10X and the UTD2000L Series Digital Oscilloscope To verify that your oscillosco
65. s STORAGE and select bitmap in the type menu Select any storage position between 1 and 200 with the multifunction control knob then press F4 storage key to complete the storage process 68 UTD2000L User Manual Tng d M Pos 0 005 Bit Map Type Bit Map 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 onthe USB directly UTD2000L 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 A progress bar appears atthe bottom Loading During waveform recall this prompt is shown on the screen A progress bar appears at the bottom Troubleshooting 1 Ifthe screen of your oscilloscope remains black without any display after powering on follow the steps b
66. s 50mV Under identical setup and environmental conditions the voltage difference AV between any two points of the waveform after the average of 16 waveforms acquired waveforms is taken 396 x reading 0 05div UTD2000L User Manual KSE Trigger sensitivity Internaltrigger 1 div external trigger 0 2V Trigger level range t 8div from the centre of the screen Trigger level accuracy Typical applied on signals of 20ns rise 0 3div x V div within 4div from the centre of the screen or fall time 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 Edge type Rise fall rise and fall Pulse Trigger Greater than less than or equal to positive pulse Greater than less than or equal to negative pulse 20ns 10S Alternate Trigger Edge puis Edge pulse 75 LINI T TD2000L User Manual Measurement EES Manual mode Voltage difference AV between cursors time difference AT 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 Automa
67. s II and Ill i e inside 5m or Tt Am 59 LINII T Furthermore if the frequencies and phase differences of two signals Illustration 7 Using the USB upgrade program being measured are whole multiples you can calculate the frequency and phase correlation between the two signals UTD2000L User Manual The USB upgrade program makes upgrade easier and more flexible To use this function follow the steps below 10 X YPhase difference table 1 Check the model name software and hardware versions of your oscilloscope in 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 Program Update System JTUL Figure 3 8 USB update confirmation 60 UTD2000L User Manual Program Update System uti000 12 24 uts 325KB 2008 1 2 24 10 37 JUUUUUUL e you are using USB Update program Y3 2 2 27 15 09 uti000 12 Figure 3 8 USB update confirmation After pressing F5 the screen will prompt you to select the update Figure 3 9 Selection of the USB upgrade program as shown in the following figure You can now select the document
68. se 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 Acquire Mode Sample M Pos 0 00s Sampling Equ time Fast cq OFF Chi Kaa Che ETIE Hath Off i CH 000m Figure 2 18 Waveform without average sampling 36 UTD2000L User Manual Acquire Mode Average M Pos 0 00p5 w Averages D 64 Sampling Equ time Fast cq OFF Chi Kaa XJ Ch2 M 200 Math Off HCH BR 000m 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 UTD2000L User Manual Definitions Real time sampling In this mode the system makes full acquisition to fill the memory Maximum real time sampling rate is 500MS s UTD2052CL At a setting 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 samp
69. 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 setto 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 edge Steps 1 As in the previous illustration set the attenuation factor of the probe and Ch1 Carry outtrigger setup D Press TRIG MENU in the trigger control zone to display the trigger setup menu n 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 to AC 3 Adjust horizontal time base and vertical range to an 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 waiting When a glitch occurs the machine will automatically trigger and record the waveform immediate
70. splay Your UTD2000L 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 Connect the signal to be tested to the signal input channel 2 Press AUTO The oscilloscope will automatically set the vertical deflection factor scanning time base and trigger mode UTD2000L User Manual Should you reguire 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 Figure 1 9 Vertical control zone on the front panel 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
71. t signals To check the circuit s input and output in the X Y coordinate mode follow the steps below 1 Settheattenuation 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 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 Pressthe 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 in a Lissajous figure 8 Adjustthe vertical scale and vertical position knob to achieve the best result of waveform 9 Usingthe elliptic oscilloscope display graph to observe measure and calculate the phase difference see the figure below Signal mustbe horizontally central Figure 3 7 itsind 2 org 8 is 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 0 tarcsin A or 6 arcsin 8 Ifthe elliptic mai axis is within quadrants and III the angle of disparity should be within quadrants and IV i e inside 0 3 Or EH 727 If the main axis is within quadrants Il and IV the angle of disparity should be within quadrant
72. te Return to the previous page 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 Next 3 3 Return to page 1 as shown in Table 2 28 50 UTD2000L User Manual Table 2 31 Function Menu Explanatory Note From Channel CH1 CH2 MATH Select the reference channel To Channel CH1 CH2 MATH Selectthe channel to be measured o OK Selectto return to the parameter measurement display menu and replace the original parameter in that position Cursor Measurement Press CURSOR to display the measurement cursor and cursor menu then adjustthe 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 MULTI PURPOSE RUN MEASURE ACOUIRE STORAGE STOP CURSOR DISPLAY UTILITY AUTO PUSH SELECTED Figure 2 28 Function key for the sampling system cursor UTD2000L 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 wavefo
73. terminal Connect CH2 to the output terminal Steps 1 Todisplay CH1 and CH2 signals D Press AUTO 2 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 the 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 waveform changes D When measuring channel delay automatically Press MEASURE to display the automatic measurement 54 UTD2000L User Manual menu Press F1 to enter the measurementtype selection menu Press F4 to enterthe time measurement parameters table 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 3 Observe waveform changes see the figure below Figure 3 2 Waveform delay UTD2000L User Manual Illustration 3 Acquiring single signals The advantage and special feature of your digital storage Oscilloscope lie in its ability to acquire non cyclical signals like pulse and glitch To acquire a single
74. the multifunction control knob to set the holdoff time 11 LINII T Getting to Know the Trigger System As shown in Figure 1 11 there are one knob and three buttons in the trigger menu control zone The following steps will get you familiar with trigger setup TRIGGER A LEVEL v d i Figure 1 11 Trigger menu control zone onthe front panel 12 UTD2000L User Manual Use the trigger level knob to change the trigger level You will see a trigger sign on the screen that indicates the irigger level The sign will move up and down with the knob While you move the trigger level you will find the trigger level value at the 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 set AUTO for TRIGGER MODE Press F5 and set AC for TRIGGER COUPLING UTD2000L User Manual Trigger Type Edge Source CHI Made Auto Coupling Figure 1 12 Trigger Menu 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 13 LINII T Chapter2 Instrument Setups You should be familiar with basic operation of the vertical controls
75. tic measurement Customized parameter measurement Math functions Saving waveforms Internal 20 groups of waveforms and 20 setups USB 200 groups of screens 200 groups of waveforms Sampling points 1024 points Lissajous Figure Phase difference 3degrees Trigger frequency counter Reading pixel aspect ratio Trigger sensitivity 30Vrms Accuracy Typical 51ppm including all frequency reference errors and 1 word 76 UTD2000L User Manual Display Display type 178mm diagonal line 7 LCD panel 800 horizontal x RGB x 480 vertical pixels color Longitudinal 8 div 25 dot div Simplified Chinese Traditional Chinese English Spanish Display resolution Display Colour Display contrast Typical acklight Intensity Typical Display Languages Portuguese French nterface Functions Standard setup 1xUSBOTG Optona Le Source Voltage 100 240VAC ins 45 440Hz CAT II Power Consumption Less than 30VA Fuse F1 6AL250V The UTD2000L series fuse is on the power board inside the unit Operating 0C 40C Non operating 20 C 60 C Natural cooling 410C 430C 95 5 RH 300 40C 75 5 RH 410C 430C 95 5 RH 30C 40C lt 7596 5 RH Operating under 3 000m Non operating under 15 000m Mechanical Specifications Dimension reference only Width Height Depth Without packaging 2 2kg Input impedance With packaging 3 3kg IP Protection Adjustment frequency Recommended
76. 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 W 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 UTD2000L 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 W DC Allowing all quantities to pass W AC Intercepting DC quantities and attenuating signals under 10Hz H 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 after 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 horiz
77. unction menus or access particular functions directly UTD2000L User Manual Figure 1 1 UTD2000L Series Digital Storage Oscilloscope UTD2000L User Manual Multifunction Freguently Operation controlknob UsedMenus controls LINI T UTD2102CEL 100MHz 1GS s DIGITAL STORAGE OSCILLOSCOPE Trigger controls Horizontal controls Vertical controls DT 3 3 3 3 2 Probe compensation signal output External trigger inputt Analog USB Host signal input interface Figure 1 2 Schematic Diagram of the UTD2000L Front Panel UTD2000L User Manual Displaying the horizontal trigger position Trigger status display Displaying the central graticule time M Pos 0 00 js SE UEM AE M Coupling e mi TED Save S eters i TED LL DC CH1 icon 1 A METUENTES ENDE PT EA VENERE ie BY Limit The menu varies with 3 individual function keys VLA EE EE KENE NEEN Volts Diw E NI MEE OM NAA wee E Daran ed GE Waveform display window Ch2 icon gt 5 SE EE S Invert Emi Ch2 2 00v Close Math JFF Displaying the vertical Displaying main graticule factor of the time base setup channel Figure 1 3 Schematic diagram ofthe display interface UTD2000L User Manual General Inspection We suggest checking your new UTD2000L oscilloscope in th
78. use the horizontal scaling knob to change the window width For details see notes on time base extension Horizontal control knob menu Display the horizontal menu see the table below Table 2 5 Function Menu Setup Explanatory Note 1 Openthe main time base 2 If you press the main time base when window extension is on window extension will close Window 1 Open time base extension Hold off __ Adjust holdoff time HORIZONTAL 4 POSITION gt Figure 2 11 Horizontal system control zone 23 LINII T Icon definitions 24 The distance between the triggering position and horizontal centre point time Represents the memory position of the 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 UTD2000L 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 CH1 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 st

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