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UTD4000 ENGLISH USER MANUAL - UNI-T

1. Slope Setup Polarity When Slew Rate Threshold Back Rise fall setup Set slew rate to larger than smaller than equalling to with the multifunction control knob on the front panel Low level high level High low level setup Return to the previous menu LA Trigger First enable the LA function then select LA trigger Trigger menu is as follows Table 2 12 42 UTD4000 Operating Manual Table 2 12 Function Menu Setup Explanatory Note Type LA Select LA trigger as the trigger type Sub Type Code Persist Select pattern or duration as the sub type Code Turn the multifunction control knob and SELECT key to set the high and low levels for each of the 16 width values Mode Persist Setup Clock Setup Normal Single When Setup Clk Source Clk Edge The system automatically acquires 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 One trigger will occur when there is an input trigger signal Then trigger will stop Select above below or equivalent Set a duration that satisfies the condition with the multifunction control knob Select the source with the multifunction control knob Select the
2. TION Please download the suitable upgrade document Program Update System Program Update System s DSO on in detail x Figure 5 14 Incompatible software Figure 5 13 Low software version document and product model Contact Us 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 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 A list of service centres worldwide is available online at http www uni trend com 96 UTD4000 Operating Manual Chapter 6 Appendixes Appendix A Technical Indicators Unless otherwise specified all technical specifications apply to probes with a attenuation setting of 10X and the UTD4000 Series Digital Oscilloscopes To verify that your oscilloscope meets specifications it must first meet the following conditions The oscilloscope must have been operating continuously for thirty minutes within 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 Sy
3. X Y Mode This mode is suitable for CH1 and CH2 only After selecting the X Y display mode the horizontal axis will display the CH1 signal while the vertical axis will display the CH2 signal CH 1 SOOmVECH2 500m M 20 0ms 0 000us m CHI 20 00mY Figure 2 22 Waveform display in X Y mode UTD4000 Operating Manual Caution In the normal X Y mode you can adjust waveform amplitude with VOLTS DIV of the two channels Adjusting the SEC DIV time base knob will result in a lissajous figure of better display quality The following functions are disabled in the X Y display mode Automatic measurement mode Cursor measurement mode Reference or maths waveform Vector display type Horizontal POSITION knob Trigger control Key points Display Type Vector display fills the space between adjacent sampling points in display The dot mode displays only the sampling points Refresh Rate Refresh rate is the number of times the digital storage oscilloscope refreshes the waveform display per second The refreshing speed affects the capability to observe signal movements speedily UTD4000 Operating 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
4. Source Voltage 100 240VACRMS 45 440Hz CAT II Power Consumption Less than 50VA Fuse F1 6AL 250V On the power board inside the unit Environmental Temperature Operating 0 C 40 C Non operating 20 C 60 C Cooling Method Humidity Forced fan cooling lt 35 C lt 90 RH 35 C 40 C lt 60 RH Altitude Operating under 3 000m Non operating under 15 000m UTD4000 Operating Manual Mechanical Specifications Dimension Width UTD4000 336 mm Height 177 mm Depth 174mm Unit only 3 8kg Including package 6 5kg IP Protection Ip2 X Adjust the frequency We recommend setting a one year frequency UTD4000 Operating Manual Appendix B Accessories for UTD4000 Oscilloscopes Standard Accessories e Two 1 2m 1 1 10 1 passive voltage probes For details please read the probe manual EN61010 031 2008 standard Rating is 150V CAT II when the switch is in the 1X position Rating is 300V CAT II when the switch is in the 10X position One international standard power cord One Operating Manual One Product Warranty Card UTD4000 communication control software USB Device USB cable UT DO6 Two multimeter pens and two current voltage convertor modules UT M03 UT M04 UTD4000 logic analyzer probe UT U01 Optional Accessories e UTD4000
5. 2 div peak to peak trigger typical EXT 400mV ie ye EXT 5 2V UTD4000 Operating Manual Signal format and line field Supports standard NTSC and PAL frequency video trigger type Line range 1 525 NTSC and 1 625 PAL Alternate Trigger CH1 Trigger Edge pulse video slew rate LA CH2 Trigger Edge pulse video slew rate LA Measurement Voltage difference AV between cursors time Manual mode difference A T between cursors AT countdown Hz 1 AT Cursor Tracking mode Voltage and time of waveform dots Automatic measure Allows cursor display during automatic ment mode measurement Automatic measurement Measuring Maximum minimum top bottom mean peak to peak amplitude average root mean square cycle average cycle root mean square area cycle area frequency cycle rising edge falling edge positive pulse negative pulse burst pulse overshoot preshoot rise delay fall delay phase positive duty ratio negative duty ratio Math functions Saving waveforms a x E 10 groups and 10 setups FFT Window Hanning Hamming Blackman Rectangle Acquisition points 1024 points Lissajous Figure Phase difference 3 degrees LA UTD4000CA series without this feature UTD4000 Operating Manual Channels DO D15 DMM Sample rate 200MS s Recording length 512k D
6. REF menu button on the front panel 2 Press CALL BACK Select the signal source by turning the multifunction control knob on the upper part of the front panel You can choose from 1 to 10 After selecting a numeral for saved waveform e g 1 press SELECT to recall the waveform which was originally stored in that position For instructions on storing or recalling reference waveforms on the USB device read Storage and Recall 3 Press RefB RefB reference option Select the second signal source for the math function by repeat ing step 2 In actual application when using your UTD4000 to mea sure and observe such waveforms you can compare the current waveform with the reference waveform for analysis Press REF to display the reference wave form menu For setup please refer to Table 2 5 4 To close the reference waveform press OFF in UTD4000 Operating Manual the vertical zone Note When AUTO is pressed after a reference waveform is recalled that waveform will remain Table 2 5 Selecting the storage position Function Menu Setup Explanatory Note Ref Wave REF A Select the REF A reference option Select the REF B reference option REF B Recall a waveform stored in any of the 10 with the multifunction control knob then press SELECT to confirm Recall a reference waveform stored on the USB device UTD4000 Operating Manual To select an internal storage positi
7. are displayed Press F1 then F3 to select ground It is now set up as ground The waveform display is as follows Note In this mode although waveform is not displayed the signal remains connected to the channel circuit 21 CHI Coupling BY Limi mt Ground Icoupling setup Volts Div Coarse Probe 1X Invert CH1 500m Off M 200us 0 000us ECHI 40 00m Figure 2 3 Screen display for theground mode 2 Setting up the channel bandwidth Take the example of applying a signal to CH1 The signal being tested is a signal stacked with high frequency quantities Press CH1 to turn CH1 on Next press F2 then F1 to set channel bandwidth to full bandwidth The signal being measured can pass through even if it contains high frequency quantities The waveform display is as follows 2 UTD4000 Operating Manual Coupling AC INS BY Limit ee Full S bandwidth Probe CH 1 500m M W00ns 0 000us MM CHI 120 00mv Figure 2 4 Waveform display at full bandwidth UTD4000 Operating Manual Press F2 then F3 All high frequency quantities higher than 20MHz in the signal being tested will be limited The waveform display is as follows Coupling ACIQ BW Limit Bandwidth limit 20MHZ CHI fw 00m Bandwidth limit icon Figure 2 5 Waveform display when bandwidth limit is on 3 Setting up the probe rate To match the probe attenuation facto
8. calculate the frequency and phase correlation between the two signals UTD4000 Operating Manual 10 Table of X and Y phase difference Z 0 4 d 4 15 AA HN 0 Vv mitt K VN 22 30 win VW 15 ry VV 11 15 22 30 AAS IXA vV 30 VV Illustration 7 Video signal triggering To observe an individual video circuit use the video trigger function to obtain a stable display of video output signal Video field triggering To trigger in the video field follow the steps below 1 Press MENU in the trigger control zone to display the trigger menu 2 Press menu operation key F1 then F3 to set the type to video 3 Press F2 then turn the multifunction control knob to set trigger source to CH1 Next press SELECT to confirm 4 Press F5 then F1 to select PAL as the video standard 5 Press menu operation key F2 to select odd field or even field synchronization 6 Turn the SEC DIV knob in the horizontal control zone to adjust horizontal time base for a clear wave form display VIDEO SETUP Standard PaL ae Syne Even Field CH 1 500m M 20 0us 0 000us E CH1 EVEN FIELD Figure 3 8 Video field triggering Video line triggering To trigger on the video line follow the steps below 1 Press trigger MENU button in the trigger control zone to display the trigger menu 2 Press F1 then F3 to set the type to video 3 Press F
9. converter A D UTD4302C UTD4202C UTD4152C UTD4102C UTD4082C UTD4062C UTD4042C 8 bit resolution two channels sampling simultaneously Deflection factor V div Range V div at input BNC 1mV div 10V div UTD4102C UTD4082C UTD4062C UTD4042C 2mV div 5V div UTD4302C UTD4202C UTD4152C Displacement range 2 10 div UTD4102C UTD4082C UTD4062C UTD4042C 2 5 div UTD4302C UTD4202C UTD4152C Analog bandwidth 40MHz Single bandwidth 300MHz 200MHz 150MHz 100MHz 80MHz 100MHz 100MHz 100MHz 100MHz 60MHz 80MHz 60MHz 40MHz Selectable analog bandwidth limit Typical 20MHz Low frequency response AC coupling 3dB Rise time at BNC typical lt 5Hz at BNC DC gain accuracy When vertical sensitivity is 1mV div 5 sampling or average acquisition mode When vertical sensitivity is 2mV div 4 sampling or average acquisition mode When vertical sensitivity is 5mV div 10V div 3 sampling or average acquisi tion mode DC measurement accuracy average acquisition mode When vertical position is zero and N 216 5 x reading 0 1 div 1mV and 1mV div is selected 4 x reading 0 1 div 1mV and 2mV div or 5mV div is selected 3 x reading 0 1 div 1mV and 10mV div 10V div is selected When vertical position is not zero and N 216 5 x reading vertical shift reading 1 x vertical shift reading 0 2div Set from 1mV div to 200mV div
10. familiar with trigger setups 1 Use the trigger level knob to change the trigger level The trigger level line on the screen 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 2 Open the TRIGGER MENU see Figure 1 12 to change trigger setups General setups are as follows Press F1 twice to select the edge as TRIGGER TYPE Press F2 to select CH1 as TRIGGER SOURCE Select with the multifunction control knob then press SELECT to confirm Press F3 then F1 to set TRIGGER COUPLING as DC Press F4 then F1 to set TRIGGER MODE as AUTO Press F5 to set EDGE TYPE as RISING 8 UTD4000 Operating Manual TRIGGER TRIGGER Type Edge Source Coupling Figure 1 11 Trigger controls Figure 1 12 Trigger menu 3 Press the 50 button and set the trigger level at the vertical centre point of the trigger signal amplitude 4 Press FORCE to generate a compulsory trigger signal that is mainly used in the normal and single trigger modes UTD4000 Operating Manual Chapter 2 Instrument Setups You should be familiar with basic operation of the verti cal controls horizontal controls and trigger system menu of your UTD4000 oscilloscope by now After read ing 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
11. mode When observing low frequency signals in slow scanning mode it is advised to set the channel coupling as DC S div A horizontal scaling time base unit If waveform sampling is stopped by pressing the RUN STOP button time base control can expand or compress the waveform Storage and Recall As shown below the STORAGE button in the control zone is the function key for the storage system SELECT vo MEASURE ACQUIRE STORAGE e g DMM CLOSE CURSOR DISPLAY UTILITY AUTO Figure 2 23 Function key for the sampling system storage Press the STORAGE button to display the setup menu You can use this menu to save and recall wave forms or setup document stored on the oscilloscope built in memory or a USB device Steps Press STORAGE to go to the type menu There are three types to choose from waveform setup and bitmap 53 UTD4000 Operating Manual 1 Select reference waveform to go to the waveform storage menu shown below see Table 2 16 Astored reference waveform can be recalled with the REF key see Reference waveform page 29 For specific steps please see REF operation instructions Table 2 16 Reference waveform storage menu Function Menu Setup Explanatory Note Type Wave Select the waveform storage and recall menu Siource CH1 Select the waveform from CH1 CH2 Select the waveform from CH2 Save 1 10 With the multifunction control knob set and se
12. on the screen during auto calibration A progress bar appears at the bottom O Failure When USB communication fails or no document meeting specific requirements is found on the USB device this prompt appears Function Disabled When closing the LA function in the LA menu this prompt appears if the LA trigger key in the trigger MENU is pressed Troubleshooting 1 If the screen of your oscilloscope remains black without any display after powering on follow the steps below to find the cause e Check the power cable connection and check if there is normal power supply Check if the power switch is properly pressed Restart the unit after performing the above checks e f the unit still fails to power on contact UNI T to request service 2 If no waveform is displayed after you have acquired UTD4000 Operating Manual a signal follow the steps below to find the cause Check whether the probe is properly connected to the signal lead e Check whether the signal lead is properly connected to the BNC channel adaptor Check whether the probe is connected properly to the object for measurement e Check whether the object for measurement is generating signals connect the channel with signals to the questionable channel to find the cause e Restart the acquisition process 3 The measurement voltage amplitude value is 10 times larger or smaller than the actual value Check if the channel attenuation fac
13. open CH1 or CH2 under the dual time base mode select by pressing F2 To select M1 or M2 as the activated time base press F3 M2 is the delayed scanning time base F 14 903 1kHz Delayed time base M2 Main time iN base M1 Figure 2 14 Dual time base UTD4000 Operating Manual Setting up the Trigger System Triggering decides when the oscilloscope collects data and display waveforms Once the trigger is correctly set up it offers stable display of the waveform being observed When beginning to acquire data the digital storage oscilloscope first collects data required for pre trigger When the trigger condition arises it will continue to acquire the remaining data The trigger control zone on the operation panel of your digital storage oscilloscope comprises a trigger level adjustment knob a trigger menu button MENU 50 for setting up the trigger level at the vertical centre point of the signal and a compulsory trigger button FORCE Trigger level Trigger level sets the trigger point of the signal being tested 50 Setting the trigger level at the vertical centre point of the trigger signal amplitude UTD4000 Operating Manual FORCE To generate a compulsory trigger signal Mainly used in the trigger mode and Normal and Single modes MENU Button for the trigger setup menu Trigger Control Trigger modes Edge pulse video slew rate and logic analyzer LA Edge t
14. plus 2mV Setup value gt 200mV div to 10V div plus 50mV Voltage difference AV measurement accuracy average acquisition mode Under identical setup and environmental conditions the voltage difference AV between two points of the waveform after the average of 216 waveforms acquired waveforms is taken 3 x reading 0 05 div UTD4000 Operating Manual Trigger Trigger sensitivity lt 1 div Internal 8div from the centre of the screen 100MHz 80MHz 60MHz 40MHz 5div from the centre of the screen 300MHz 200MHz 150MHz Trigger level range EXT 3V 100MHz 80MHz 60MHz 40MHz 800mV 300MHz 200MHz 150MHz EXT 5 15V 100MHz 80MHz 60MHz 40MHz 4V 300MHz 200MHz 150MHz Trigger level accuracy Internal 0 3 div x V div within 4 div from the centre of the screen Typical applied on signals EXT 6 default value 40mV of 220ns rise or fall time EXT 5 6 default value 200mV Normal mode scanning mode pretrigger delayed trigger Pretrigger depth is adjustable Holdoff range 96 0000ns 1 5s Set level to 50 Typical Input signal frequency 250Hz Edge Trigger Edge type Rise Fall Rise and Fall Pulse Trigger Pretrigger capability Greater than less than or equal to positive pulse Greater than less than Trigger mode or equal to negative pulse Pulse width range 20ns 10s Video Trigger Trigger sensitivity video Internal
15. press SELECT on the front panel and the multifunction control knob to adjust the positions of the two cursors for AV measurement Likewise by selecting time you can measure At The CURSOR menu has two other modes In the independent mode you can adjust the positions of the two cursors independently In the tracking mode you press SELECT and multifunction control knob to move two cursors simultaneously 1 Measuring voltage time Cursor 1 or cursor 2 will appear simultaneously Adjust their positions on the screen with the multifunction control knob and select UTD4000 Operating Manual which cursor to adjust with the SELECT button The displayed reading is the voltage or time value between the two cursors 2 When the cursor function is enabled measurement value is automatically displayed in the top left corner Table 2 23 Function Menu Setup Explanatory Note Type Time Amplitude Off Set time as the measurement parameter Set amplitude as the measurement parameter Close the automatic measurement function Independent Tracking Adjust the difference between two cursors with the multifunction control knob Adjust the difference between two cursors with the multifunction control knob or fix the difference and adjust the cursor positions Sec Hz Select time as the measurement parameter Select frequency as the measurement parameter Using the Run Button There is a RUN STO
16. ratio is larger than 1 UTD4000 Operating Manual Using the Autoset 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 Should you require to make more detailed check you can adjust manually after the auto set process until you get the optimal waveform display Getting to Know the Vertical System As shown in the figure below there are a series of buttons and knobs in the vertical control zone The following steps will get you familiar with the use of these controls Figure 1 9 Vertical controls 1 Turn the vertical position knob POSITION to enable the waveform 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 vertical reference of the GROUND channel will move up and down with the waveform Measurement Tips If the channel coupling is DC you can test the signal s DC quickly by checking the difference between the waveform and signal ground In the case of AC coupling the DC within the signal will be intercepted In this coupling mode you can display the AC of the signal with higher sensitivity Shortcut key for resetting the vertical position of the dual analog channel to zero SET TO ZERO This shortcut key can re
17. rising or falling edge of the clock Back Return to the previous menu level UTD4000 Operating Manual Alternate Trigger Table 2 13 When alternate trigger is selected the trigger signal will be present in two vertical channels This triggering mode is suitable for observing two signals of unrelated signal frequencies The between main window and Alternate trigger menu can also be used to com Me N pare pulse widths Dual Xbase Mode Main time base or dual time base M1 Base For the selection of display Adjusting the Holdoff Time ing CH1 or CH2 Function Menu Explanatory Note Window Press F1 to switch X Adjust Selecting main time base You can adjust the holdoff time to observe complicated M1 or delay time base M2 waveforms e g pulse string series Holdoff time M2 Shift Selecting fine tune or coarse means the data acquisition cycle of the digital storage tune shift oscilloscope It is an exact multiple of the cycle of the Holdoff Adjust holdoff time with the complicated waveform being tested thus synchroniza tion is possible For example you can display one group of pulse series stably by adjusting holdoff time as shown in Figure 2 17 For the holdoff menu please see the table 2 13 44 multifunction control knob UTD4000 Operating Manual Trigger position Hcldoff M 100s 0000s mcH A 20000m Figure 2 17 Use the h
18. 2 then turn the multifunction control knob to set trigger source to CH1 Next press SELECT to confirm UTD4000 Operating Manual 4 Press F5 then F1 to select PAL as the video standard 5 Press F2 then F4 to select specified line synchronization 6 Use the multifunction control knob to select triggering on any line T Turn the horizontal SEC DIV knob in the horizontal control zone to adjust horizontal time base for a clear waveform display VIDEO SETUP Standard Line Num E Line Num CH1 1 00 Baok W 200us 0000us m CHI LINE 25 Figure 3 9 Video line triggering UTD4000 Operating Manual Illustration 8 Pass fail check To check whether the input signal is within the standard range Fail means outside the range and pass means within range You can also output the pass fail signal through the output terminal 1 Press UTILITY then F3 to enter the pass fail menu 2 To set the signal source Enter the pass fail menu and press F3 for setup 3 Mask setup Press next page then F1 to select operation Press F3 to enter the mask setup menu Press F1 to select the reference waveform Press F3 then the multifunction control knob to set the maximum horizontal capacitance then F4 and the multifunction control knob to set the vertical capacitance i e horizontal 1 100 vertical 1 100 Finally press CREATE MASK and return to the previous menu 4 To stop setup press F2 to en
19. BLACKS UTD4000 Series OPERATING MANUAL Digital Storage Le F Tot ol fefe of UNI T UTD4000 SERIES OPERATING MANUAL UTD4000 Operating Manual General Safety Rules This unit is designed and manufactured strictly in accordance with GB4793 safety requirements for electronic testing meters and IEC61010 1 safety stan dards It fully meets CAT II 600V insulation and over voltage requirements and Grade II anti pollution safety standards To prevent personal injuries and damage of this 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 Operating Manual Maintenance should only be carried out by a trained professional To avoid fire and personal injury Use a 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 unit is 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 unit is properly grounded Connect the probe of the digital storage oscillo scope The probe ground cable is the same as ground potential Do not connect the ground cable to high voltage Check the rated values of a
20. C voltage Range 400 0mV 4 000V 40 00V 400 0V Accuracy 1 5 Digital Maximum input voltage 40Vpeak Minmum voltage slew 1 2Vpp AC voltage 40Hz 400Hz Range 4 000V 40 00V 400 0V Accuracy 1 2 5 Digital Code Trigger mode Persist DO D15 Trigger code H Ly X Clock edge Rise Fall DO D15 Trigger code H L X condition gt lt Resistance Range 4000 4kQ 40kQ 400kQ 4MQ 40MQ Accuracy 1 5 5 Digital On off lt 70 00 Diode Forward Voltage Drop 0 5V 0 8V Persist setup 20ns 10s DC Range 4mA 40mA 400mA Accuracy 1 5 Digital current Range 4A Accuracy 1 5 5 Digital UTD4000 Operating Manual General Specifications Display Display Type 145 mm 5 7 in diagonal LCD Display Resolution 320 horizontal x RGB x 240 vertical pixels True colour LCD Contrast typical Non adjustable Backlight Intensity Typical 300 nit Display Languages Simplified Chinese Traditional Chinese English Probe Compensator Output Output Voltage Typical Frequency Typical about 3V into peak to peak at 2 1 MQ load 1 kHz Interface Functions Standard setup 1 x USB D 1 x USB H LA interface multimeter interface Pass fail interface Optional GPIB and LAN Power Source UTD4000 Operating Manual
21. Illustration 12 Using the multimeter 85 Chapter 4 System Prompts and Trouble shooting 86 Definitions of System Prompts 86 Troubleshooting 86 Chapter 5 Service and Support 88 Warranty 88 Using the USB Upgrade Program 88 Contact Us 96 Chapter 6 Technical Indicators 96 Appendix A Technical indicators 96 Appendix B Accessories for UTD4000 Oscilloscopes 106 Appendix C Maintenance and Cleaning 107 108 UTD4000 Operating Manual Chapter 1 User Guide UTD4000 Series digital storage oscilloscopes are sm all and compact portable devices The user friendly front panel enables easy operation for basic testing and measuring tasks 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 UTD4000 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 UTD4000 series digital storage oscilloscope as quickly as possible Your UTD4000 oscilloscope comes with a front panel with at a glance functions for easy operation There are buttons and function keys on the front panel The functions of knobs are sim
22. LAN amp GPIB modulel UT M06 All accessories standard and optional are available by order at your local UNI T dealers UTD4000 Operating 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 Inspect the oscilloscope and probes as often as operating conditions require To clean the exterior surface perform the following steps 1 Remove loose dust on the outside of the oscilloscope and probes with a soft cloth When cleaning the LCD use care to avoid scratching the clear protection film of the LCD 2 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 injury due to the presence of moisture please ensure the product is completely dry before reconnecting power for operation UTD4000 Operating Manual Index Numeral Display system 50 button Horizontal system Maths function Measurement Reference waveform RUN STOP Storage Trigger system Functions Chinese Vertical system General check Return to zero General care Rise time Fall time Nyquist frequency System prompts Top
23. Logic Analyzer LA Measurement acquisition If you want the oscilloscope to acquire waveform There are 16 LA channels continuously press RUN STOP once Press the Maximum sampling rate 250Msaps button again to stop acquisition You can use this Storage depth 512K button to switch between acquiring and stop acquiring Maximum input voltage 40Vpp waveform In the Run mode a green light comes on Minimum voltage swing 1 2 Vpp and AUTO appears on the screen In the STOP Trigger types available are edge pattern duration mode a red light comes on and STOP appears on the The following is the LA operation menu screen Function Explanatory Note Menu Display ON OFF To display or hide the current Function LA functions ON OFF menu LA Setup See Table 2 26 With the menu ON OFF key you can display or hide Threshold Select threshold type TTL the menu currently on screen When the menu is CMOS ECL or any user hidden a vertical yellow band will appear on the right defined threshold type side of the screen Sequence of channels currently open from small to large UTD4000 Operating Manual Table 2 26 Function Setup Explanatory Note LA Setup Select Select the LA channel Move Move the selected channel Display Display or close the selected channel D7 DO Open D7 D0 channels Next page Go to the next page D15 D8 Open D15 D8 channels Height Enlarge or restore the designated channe
24. P button on the top right corner of the front panel When this button is pressed and a green indicator lights up your oscilloscope is in a running status When the red light comes on after pressing this button again it indicates the unit has stopped operation 3 D fe Ir P SELECT MEASURE ACQUIRE STORAGE C g f co rc DMM CLOSE CURSOR DISPLAY UTILITY AUTO Figure 2 28 RUN STOP button Auto Setup As shown above Auto Setup can simplify operation 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 so as to ensure stable waveform display When the oscilloscope is in auto setup mode the system setup is as shown by Table 2 24 UTD4000 Operating Manual Table 2 24 Auto setup Function Menu Setup Acquisition mode Display format Adjust to sampling or peak detect Set to YT SEC DIV Adjusted according to signal frequency Trigger coupling AC Trigger level Set at 50 Trigger mode Auto Trigger source Set to CH1 but if there is no signal in CH1 and CH2 applies a signal it will set to CH2 Trigger inclination Rising Trigger type Edge Vertical bandwidth Full VOLT DIV Adjusted according to ampli tude of the signal UTD4000 Operating Manual RUN STOP Acquire waveform continuously or stop
25. RE ACQUIRE _ STORAGE tS em fa rc DMM CLOSE CURSOR DISPLAY UTILITY AUTO Figure 2 18 Function key for the sampling system Press the ACQUIRE button to pop up the sampling setup menu You can use this menu to adjust the sam pling mode UTD4000 Operating Manual Table 2 14 Sampling menu Function Menu Setup Explanatory Note Acquisition Normal Turn on the ordinary sampling mode Peak Turn on the peak detect mode Average Set to average sampling and display the average number of times Envelop Use the peak detect mode for every independent acquisition Averages 2 256 Set the average number of times in multiples of 2 i e 2 4 8 16 when average 32 64 128 256 To change the average number of times use the sampling is selected multifunction control knob shown in Figure 2 18 Mem Length Normal Set normal length of samping data Long Mem Set long length of samping data long storage is disabled when the logic analyzer is on and dual time base is in operation Fast ACQ On Acquire at a high screen refresh rate for more realistic reflection of waveform status Close the quick acquisition function UTD4000 Operating Manual By changing sampling setup you can observe the consequent changes in waveform display If the signal contains considerable noise you will see the following displays when average sampling is not selected and when 32 time average sampling is selected For
26. al 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 acquisi tion mode 1 If the signal being measured is stacked with random noise and the waveform is too coarse as a result you can use the average acquisition 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 control zone of the front panel to display the sampling setup menu Press F1 then F3 to set acquisition mode to ADVERAGE then turn 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 observa tion and measurement requirements See the figure below ACQUIRE Acquisition Average Averages be em Length 2 Normal R A s H D Fast ACQ CH 1 20 0m Off M 200us 8 000us ECHI 1 60mi Figure 3 5 Signal noise suppressed 2 You can also lower waveform brightness to reduce display noise Caution In the average acquisition mode the waveform display will update at a slower rate This is normal UTD4000 Operating Manual Illustration 5 Using cursors for measurement Your osc
27. annels press F4 in the channel setup menu to open channels DO D7 then press F5 to go to the next page and press F1 to open channels D8 D15 In the LA menu you can press F5 to automatically arrange the channels on display in sequence 2 Using LA functions Set all LA channels as explained above Input a signal to one or several channels then press MENU in the trigger zone Press F1 to select trigger type to LA trigger then press F2 to select sub type By pressing F3 you can set the trigger qualifier status Press F4 to select trigger mode and F5 to set the clock When the sub type is pattern or duration when sub type is duration The LA can be used concurrently with the analog channel UTD4000 Operating Manual Figure 3 15 LA channel setup UNI T j D C M Figure 3 16 Composite display of the logic analyzer and CH1 UTD4000 Operating Manual Illustration 12 Using the multimeter The multimeter of this digital storage oscilloscope can measure 5 parameters voltage resistance on off diode and DC current The following example shows the steps for DC current measurement 1 Assuming the size of the current to be measured is unknown a current voltage converter module of 4A range should be used Connect it to the multimeter port of the oscilloscope then connect the multimeter pen 2 Press the DMM key and F1 to open the multimeter function table Press F2 then F5 to select m
28. atio of positive pulse width to cycle Negative duty ratio Duty Ratio of negative pulse width to cycle Measurement menu Operation Press MEASURE to display 4 function options as shown in the table below Table 2 22 Function Menu Explanatory Note All Display all parameters To close press CLOSE Select Up to 4 parameters can be displayed on screen Indicators Visual indication of the measurement value s physical properties by lines Clear Clear the finished parameters Note Customized parameters are for quick parameter measurement This device has 27 measurement parameters In general use the user is not required to measure all parameters Only a few have to be tested In this case set the parameters you require as customized parameters All such parameters will be displayed on the screen 63 MEASURE W 1 00ms O 000us E CHI A 16 00mv Figure 2 26 Measurement parameters Cursor Measurement Press CURSOR to display the measurement cursor and cursor menu then adjust the cursor position by turning the multifunction control knob As shown in the figure below CURSOR in the control zone is the function key for cursor measurement UTD4000 Operating Manual O feme foame owe D cursor foispLay funun auro Figure 2 27 Function key for the sampling system cursor There are two cursor measurement modes to choose from the CURSOR menu voltage and time When measuring voltage
29. basic operation steps and methods please read Chapter 1 This chapter will guide you through the following e Setting up the vertical system CH1 CH2 MATH REF OFF VERTICAL POSI TION VOLTS DIV Setting up the horizontal system MENU HORIZONTAL POSITION SEC DIV Setting up the trigger system TRIGGER LEVEL MENU 50 FORCE Setting up the sampling method ACQUIRE Setting up the display mode DISPLAY Save and transfer STORAGE Setting up the utility function UTILITY Automatic measurement MEASURE Cursor measurement CURSOR Using the auto setup run stop buttons AUTO RUN STOP e Logic analyzer LA Digital multimeter DMM It is recommended that you read this chapter carefully to understand the various measurement functions and system operation steps of your UTD4000 Series Oscillo scope Setting Up the Vertical System CH1 CH2 and setups Each 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 19 UTD4000 Operating Manual Table 2 1 Explanatory notes for channel menu Function Menu Coupling Setup DC 1MQ AC 1MQ GND Explanatory Note AC and DC quantities of input signal is allowed to pass DC quantities of the input signal are intercepted DC level of the channel input terminal upon equivalent groundi
30. cur and the acquired waveform will be displayed when the digital storage oscilloscope detects a trigger Then trigger will stop 3 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 suppres sion DC Allowing all quantities to pass e AC Intercepting DC quantities and attenuating signals under 10Hz UTD4000 Operating Manual e Low Frequency Suppression Intercepting DC quantities and attenuating low frequency quantities under 80kHz e High Frequency Suppression Attenuating high frequency quantities over 80kHz 4 Pretrigger Delayed Trigger Data sampled before after triggering The trigger position is typically set at the horizon tal center of the screen In this case you are able to view 5 divisions of pretrigger waveform and 5 divisions of post trigger waveform By turning the horizontal shift knob POSITION clockwise to adjust horizontal displacement of the waveform you can see more pretrigger information i e see more waveform details before trigger occurs For example you can detect the glitch that occurs when the circuitry starts Observa tion and analysis of pretrigger data can help you iden tify the cause of glitch Setting Up the Sampling System As shown below ACQUIRE button in the control zone is the function key for the sampling system SELECT vo MEASU
31. deflection factor UTD4000 Operating Manual 5 Waveform inversion setup Waveform inversion The displayed signal is inverted 180 degrees with respect to the channel ground level Figure 2 8 shows the non inverted waveform Figure 2 9 shows the inverted waveform BW Limit FULL re CH 1 500m Gif gt M 200us 0 000us ECHI 40 00m Non inverted Figure 2 8 Inversion setup for vertical channel inversion non inverted UTD4000 Operating Manual CH1 g i Coupling AC INQ 3 4 BY Limit FULL tI L Volts Div Coarse Probe 1x CHI 4500m W 200us 0 000us ECHI 40 00mY Inverted waveform Figure 2 9 Inversion setup for vertical channel inversion inverted l Operating Math Functions Math functions are displays of x FFT math ematical results and digital filtering function of CH1 and CH2 waveforms This function is disabled in the dual time base The menu is as follows TRIG ED CH 1 2 00 VECH2 10 0viK a M 500us 0 000us m CHI lt 20 00mY Math range Figure 2 10 Math functions UTD4000 Operating Manual Table 2 2 Explanatory notes for the Math menu FFT spectrum analysis By using the FFT Fast Fourier Transform algorithm Function Menu Setup Explanatory Note you can convert time domain signals YT into Type Math To carry out x functions frequency domain signals With FFT you can conve Source 1 CH1 Set operand 1 as CH1 waveform niently ob
32. detection is carried out for every single acquisi tion UTD4000 Operating Manual Setting Up the Display System As shown below the DISPLAY button in the control zone is the function key for the display system r g e SELECT D MEASURE ACQUIRE STORAGE m 7 CURSOR DISPLAY UTILITY Figure 2 21 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 UTD4000 Operating Manual Table 2 15 Display menu Function Menu Setup Explanatory Note Format YT Operating mode of the oscilloscope XY X Y is the display mode CH1 is X input CH2 is Y input Type Vectors Sampling points are linked for display Points Sampling points are directly displayed Graticule Full Grid Set the grid display mode of the waveform zone to full grid cross Cross Hair hair or frame Frame Persist Auto Waveform on the screen is refreshed at normal rate 1s Waveform on the screen is maintained for 1 second and then refreshed 2s Waveform on the screen is maintained for 2 seconds and then refreshed 5s Waveform on the screen is maintained for 5 seconds and then refreshed Infinite Waveform on the screen remains on display New data will be added continuously until this function is disabled Intensity 1 32 In quick acquisition mode intensity of the waveform can be adjusted with the multifunction control knob
33. e 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 Adjust the vertical SCALE knob to make the displayed amplitude of the two channels to about equal 6 Press the DISPLAY menu key to recall the display menu 7 Press F1 to select X Y The oscilloscope will display the circuit s input and output characteristics in a Lissajous figure 8 Adjust the vertical scale and vertical position knob to achieve the best result of waveform 9 Using the elliptic oscilloscope display graph to observe measure and calculate the phase difference See the figure below The signal must be in the centre Figure 3 7 UTD4000 Operating Manual If sin or is the angle of disparity between the channels For definitions of A B C D see the above figure Calculat ing with this formula the angle of disparity is O arcsin 2 or arcsin amp If the elliptic main axis is within quadrants and III the angle of disparity should be within quadrants and IV i e inside O 5 or 3x 27 If the main axis is within quadrants II and IV the angle of disparity should be within quadrants II and Ill i e inside 5 7 or 7 Furthermore if the frequencies and phase differences of two signals being measured are exact multiples you can
34. e input signal LF Reject Reject low frequency quantities below 80kHz of the signal HF Reject Reject high frequency quantities above 80kHz of the signal UTD4000 Operating Manual Table 2 8 Con t Function Menu Explanatory Note Mode The system automatically acquires waveform data when there is no trigger signal input The scan baseline is shown on the display When the trigger signal is generated it automatically turns to trigger scan Normal The system stops acquiring data when there is no trigger signal When the trigger signal is generated trigger scan occurs One trigger will occur when there is an input trigger signal Then Single trigger will stop Pulse Setup See Table 2 9 Set the pulse width Table 2 9 Pulse width setup Polarity Positive Set the positive pulse width as the trigger signal Negative Set the negative pulse width as the trigger signal When Trigger occurs when pulse width is smaller than the set value Trigger occurs when pulse width is larger than the set value Trigger occurs when pulse width equals to the set value Setting Set pulse width to 20ns 10s with the multifunction control knob on the front panel Back Return to Table 2 8 UTD4000 Operating Manual Video Trigger By selecting video trigger you can carry out field or line trigger with NTSC or PAL standard video signals Trigger menus are as follows Table 2 10 Video trigger s
35. easurement parameter DC current Press F5 then F4 to set current range to 4A 3 Connect the multimeter pen to the circuit being tested 4 If the signal being tested is relatively small follow step 2 to select an appropriate current range and use a suitable current voltage converter module Adjust the current range of the current voltage converter module so it is consistent with that of the oscilloscope Next follow step 3 to measure Figure 3 17 Selecting a large range for measurement M 200us 8000000s m CHI SJ 240s Figure 3 18 Selecting a suitable range for measurement 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 adjust ment limit in the current status No further adjust is possible When the vertical deflection factor knob time base knob horizontal 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 at the bottom 86 UTD4000 Operating Manual Waiting This prompt appears
36. ent cannot be read you will see the prompt We are sorry for this case please contact with us It may be that our oscilloscope does not support your USB device or document reading is unsuccessful due to other reasons You can retry and see if the problem can be solved or use a USB device we recommend If the problem persists contact our after sales service department To resume normal operation power off your oscilloscope and then reboot Program Update System Figure 5 12 Reading failure UTD4000 Operating Manual 6 Low software version 7 Software document incompatible with product If the version of USB document is lower than that of model the oscilloscope upgrade will fail You will be prompted If the USB upgrade document is incompatible with that Sorry this package s version is too low to the oscilloscope model upgrade will fail You will be update Please read operating manual get system infoma prompted that The package s model No isn t same tion in detail This indicates that the software version you with this DSO Please read operating manual get system have saved on to the USB device is lower than the existing ee enw ae one on the oscilloscope You should acquire the correct oscilloscope model e g UTD4102C then repeat the version either online or through our after sales service USB upgrade steps department To see version information press UTILITY SYSTEM CONFIGURATION SYSTEM INFORMA
37. er 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 attenua tion factor of the probe and CH1 2 Carry out trigger setup e Press MENU in the trigger control zone to display the trigger setup menu e In this menu use F1 F5 menus to set the trigger type to edge set trigger source to CH1 set trigger coupling to AC set trigger type to single and set edge type to rising e Adjust horizontal time base and vertical range to an appropriate range e Turn the TRIGGER LEVEL control knob to get the desired level e 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 auto matically trigger and record the waveform immediately 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
38. erate your oscilloscope normally follow the on screen instructions Please pull out U disk and reboot Program Update System Tie eos Welcome you are using USB Update program Figure 5 8 Cancel upgrade 2 UTD4000 Operating Manual 3 You can still cancel upgrade when the oscilloscope is ready for the process Simply press F1 to return to normal operation Please follow the on screen instruc tions Please pull out U disk and reboot Program Update System Figure 5 9 Cancel upgrade 3 3 The USB device is removed before upgrade begins If the USB device is removed when the update document is being read before commencement of upgrade the following prompt will appear U disk has pull out Please reboot To resume normal operation power on the oscilloscope with the USB device unplugged Program Update System Figure 5 10 USB device is removed before upgrade 4 Incorrect upgrade document If the upgrade document on the USB device is incorrect update will fail upon selecting the upgrade document by pressing F5 Figure 5 2 You will see the prompt Sorry the package format isn t correct Save a correct document on the USB device and repeat the previous steps for upgrade Program Update System Figure 5 11 Incorrect upgrade document UTD4000 Operating Manual 5 Failure in reading upgrade document After selecting the upgrade document press F5 to read If the docum
39. etup Table 2 10a Video setup Function Menu Setup Explanatory Note Type Video Source CH1 CH2 EXT EXT 5 LINE CH1 amp CH2 Set CH1 as the trigger signal Set CH2 as the trigger signal Set the external trigger input channel as the trigger signal Attenuate the external trigger source 5 times as the trigger signal Set grid as the trigger signal Set CH1 and CH2 as alternate trigger signals Video Setup See Table 2 10a Standard PAL NTSC Suitable for PAL video signals Suitable for NTSC video signals Sync Odd Field Even Field All Lines Lines Num Set the video odd field to synchronized trigger Set the video even field to synchronized trigger Set the line signal to synchronize with trigger Set synchronized trigger on the specified line and adjust by turning the multifunction control knob on the upper front panel Return to Table 2 10 When PAL is selected for video and synchronization mode is line you will see a screen display as shown in Figure 2 15 When synchronization mode is field you will see a screen display as shown in Figure 2 16 __ TRIGGER Type Video Source lane Setup Figure 2 15 Video trigger line synchronization UTD4000 Operating Manual Slew Rate Trigger When slew rate trigger is selected trigger occurs if the slew rate of the signal s rising or falling edge is the same as the default value Belo
40. function that visually describes the strength of waveform e Scroll display in scan mode for continuous monitoring of signal variations e HD colour LCD system at 320 x 240 pixel as pect ratio Unique XY mode that displays the waveform and Lissajous figure e USB drive system software upgrade e Supports plug and play USB storage devices and capable of communicating with a computer through the USB storage device e Automatic waveform and status configuration d Storage of waveforms setup and bit map waveforms and setups reproduction Automatic measurement of 27 waveform parameters parameters testing and customization Ld Automatic cursor tracing measurement d Unique wave recording and replay function e Built in FFT e Multiple waveform mathematics functions including add subtract multiply and divide d Edge video pulse width slew rate and alter nate trigger functions Visual system help messages UTD4000 Operating Manual UTD4000 accessories e 2 x 1 2m 1 1 10 1 probe For details refer to the probe instructions These accessories conform with EN61010 031 2008 standards e Power line conforming to international stan dards applicable in the country of use e Operating Manual oO Product Warranty Card USB connecting cable UT D06 UTD4000 communication control software USB DEVICE e 2 x multimeter pen 2 x current to voltage converter module UT M03 UT M04 e UTD4000 logic analyzer probe includin
41. g clamps and cable flex cable UT U01 UTD4000 Operating Manual Item General Safety Rules Preface Chapter 1 User Guide 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 Chapter 2 Instrument Setups Setting Up the Vertical System Setting Up the Horizontal System Setting Up the Trigger System Setting Up the Sampling System Setting Up the Display System Storage and Recall Setting Up Utility Functions Automatic Measurement Cursor Measurement Using the Run Button Logic Analyzer LA Measurement Multimeter Measurement Chapter 3 Practical Example Illustrations UTD4000 Operating Manual Page Illustration 1 Measuring simple signals 70 Illustration 2 Observing the delay caused by a 12 sine wave signal passes through the circuit Illustration 3 Acquiring single signals 13 Illustration 4 Reducing random noise of signals 14 Illustration 5 Using cursors for measurement 76 Illustration 6 Using the X Y function 77 Illustration 7 Video signal triggering 19 Illustration 8 Pass fail check 81 Illustration 9 Quick acquisition 82 Illustration 10 Using the dual time base function 82 Illustration 11 Using the Logic Anaylzer 83
42. ger input channel Please access signals in the following steps 1 Connect the probe of the digital storage oscillo scope to the CH1 input and set the attenuation switch of the probe to 10X Figure 1 5 UTD4000 Operating Manual Figure 1 5 Setting the attenuation switch 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 then F2 to display 10X on the menu UTD4000 Operating Manual CHI Figure 1 6 Setting the probe deflection factor of the oscilloscope 3 Connect the probe tip and ground clamp to the corresponding probe compensation signal terminals Press AUTO and you will see a square wave in the display about 3V peak to peak at 1kHz in a few seconds as shown in Figure 1 7 4 Repeat these steps to check CH2 Press the OFF function button to close CH1 then press CH2 function button to open CH2 Repeat steps 2 and 3 J Coupling _ AC THO BW Limit FULL Volts Div Coarse Probe 10x Invert CH1 500m Off M 500us 0 000us CH 20 00m Figure 1 7 Probe compensation signal 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 res
43. gnals to search for higher order harmonic wave Definition FTT recognition rate It means the quotient of the sampling and math points When math point value is fixed the sampling rate should be as low as possible relative to the FFT recognition rate 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 UTD4000 Operating Manual Digital Filtering Function Function Menu Setup Explanatory Note Type Filter Digital filtering Signal source CH1 Set CH1 as filter target CH2 Set CH2 as filter target Filtering Type Low pass Set the filter to low pass filtering High pass Set the filter to high pass filtering Band pass Set the filter to band pass filtering Minimum Frequency Set the minimum frequency with o the multifunction control knob Maximum Frequency Set the maximum frequency with the multifunction control knob ll Reference Waveform Display of the saved reference waveforms can be set on or off in the REF menu The waveforms are saved in the non volatile memory of the oscilloscope or an external USB device and are identified with the following names RefA 29 30 RefB To display recall or hide off the reference waveforms take the following steps 1 Press the
44. he input signal to pass AC Intercept DC quantities of the input signal LF Reject Reject low frequency quantities below 80kHz of the signal HF Reject Reject high frequency quantities above 80kHz of the signal Auto Set to sample waveform only if no trigger condition is detected Normal Set to sampling waveform only when trigger condition is met Single Set to sample waveform once when detecting one trigger and then stop Fall Set to trigger at the signal s falling edge Rise Set to trigger at the signal s rising edge Rise Fall Set to trigger at the signal s rising and falling edges UTD4000 Operating Manual Pulse Trigger Pulse trigger means determining the triggering time based on the pulse width You can acquire abnormal pulse by setting the pulse width condition Table 2 8 Function Menu Setup Explanatory Note Type Pulse Source CH1 Set CH1 as the signal source trigger signal CH2 Set CH2 as the signal source trigger signal EXT Set the external trigger input channel as the signal source trigger signal EXT 5 Divide the external trigger source by 5 to extend the trigger level range LINE Set grid trigger CH1 amp CH2 CH1 and CH2 trigger their respective signals alternately Set one of the channels between DO D15 as the signal DO D15 source trigger signal the LA function must be enabled Coupling DC Allow AC and DC quantities of the input signal to pass AC Intercept DC quantities of th
45. ilar to other oscilloscopes The row of 5 keys on the right of the display panel are 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 func tion keys You can use them to enter different function menus or access particular functions directly Figure 1 1 Front panel of UTD4000 Oscilloscopes Multifunction Frequently control knob Used menus _ Operation control Trigger control Horizontal control ertical control gt f probe compensation signal input Power USB Host Multimenter Signal external switch interface input port input trigger input Figure 1 2 Schematic diagram for operating the UTD4000 front panel UTD4000 Operating Manual Horizontal trigger position Trigger Frequency of the triggered signal status display l 5 The menu may T vary with Channel 1 SA faa individual a 7 function keys Waveform display window Main time Display channel J Trigger level value base setup vertical range Figure 1 3 Schematic diagram for the display interface UTD4000 Operating Manual General Inspection We suggest checking your new UTD4000 oscilloscope in the following steps 1 Check the unit for possible shipping damages If the package carton or foam plastic protective lining is seriously damaged do not discard until you have carried out an electrical and mechanical check and fo
46. illoscope can measure 27 waveform param eters automatically All auto parameters can be mea sured with the cursors By using cursors you can quickly measure the time and voltage of a waveform Measuring the frequency of Sinc first peak To measure the Sinc frequency of the signal rising edge follow the steps below Press CURSOR to display the cursor measure ment menu Press F1 to activate the cursor measurement function Press F1 again to set cursor type to time Press F3 to set the vertical cursor unit to Hz Turn the multi function control knob to set cursor 1 at the Sinc first peak Press SELECT to select cursor 2 then turn the multifunction control knob again to set cursor 2 at the Sinc second peak UTD4000 Operating Manual See the figure below Note When using the cursor to measure voltage follow step 3 only and set the cursor type to voltage CURSOR Type Time Mode Independent w Units Hz Figure 3 6 Frequency of the cursor measurement signal lllustration 6 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 oscillo scope to the circuit and monitor the input and output signals To check the circuits input and output in the X Y coordinate mode follow the steps below 1 Set the attenuation factor of the probe to 10X Set the switch of the probe to 10X 2 Connect th
47. ion control knob Notes If it is necessary to test electric current follow these steps Insert the current voltage converter module UT M03 or UT M04 that comes with the oscilloscope into the digital multimeter port and move the switch of the current voltage converter so that it is consistent with the selected DMM current Proceed with testing Cautions 1 Please select a suitable current voltage converter that fits the measurement range and select an appropri ate range If you are not certain about the current being tested make an estimation then select a suitable current voltage converter and set the range to maximum 2 The multimeter cannot be used to measure AC current directly 3 In order to keep the accuracy of the testing when test heavey current with UT M04 module the test should be kept less than 10 seconds at intervals of every 15 minutes UTD4000 Operating Manual Chapter 3 Practical Example Illustrations Illustration 1 Measuring simple signals To observe and measure an unknown signal and to quickly display and measure the signal s frequency and peak to peak value 1 To quickly display this signal follow the steps below Inthe probe menu set the attenuation factor to 10X and set the switch on the probe to 10X Connect the CH1 probe to the circuitry to be mea sured Press AUTO e The oscilloscope will carry out auto setup to optimise waveform dis
48. l Previous page Return to the previous page ri 50 0us 000 us M Back Return to the previous menu Figure 2 29 Composite display Caution of the logic analyzer and CH1 To use the LA function connect the probe of the logic channel analyzer including connector interface box connect ing cable for the test point being measured and needle and insert it into the LA interface at the rear of the oscil loscope The LA function is then activated When the message LA module installation failure appears when the LA function is enabled check if the LA probe is well connected UTD4000 Operating Manual Multimeter Measurement Operation instructions Open the multimeter function menu Table 2 27 by pressing the DMM button Function Menu Setup Explanatory Note Functions DMM functions ON OFF Mode Voltage Activate the voltage measurement function Maximum measurement value for DC voltage is 400V Maximum measurement value for AC voltage is 400V Resistance Activate the resistance measurement function Maximum measurement value for resistance is 40MQ On off Activate the on off measurement function When on off measuring is lower than 70Q the beeper will sound Activate the diode measurement function Current Activate the DC current measurement function Current range 4mA 40mA 400mA 4A Win shift Set the horizontal shift or vertical shift of the window with the multifunct
49. lect the position in which the reference waveform is to be stored in the built in memory Export Filename Select the default name UNI T0000 for the reference waveform file being exported to the USB device with the multifunction control knob Format Set the format as internal or CSV OK Export the reference waveform to the USB device UTD4000 Operating Manual 2 Select setup to enter the setup storage menu See Table 2 17 Table 2 17 Storage menu setup Function Menu Setup Explanatory Note Setting Save the current front panel setup status Save Select a save position with the multifunction control knob on the front panel total 10 sets and save the setup Load Recall the saved setup status Import Filename OK Name the reference waveform file being imported from the USB device with the multifunction control knob If the document exists on the USB device it will be imported Otherwise the system will indicate I O operation failure Filename OK Name the reference waveform file being exported to the USB device with the multifunction control knob The current front panel setup status is exported UTD4000 Operating Manual 3 Select bitmap to enter the bitmap storage menu See Setting up Utility Functions Table 2 18 Note This function can be recalled and used only As shown below the UTILITY button in the control whe
50. ll terminals To prevent fire and excessive current shock please check all rated values and label data Read the manual carefully and check the rated values before connecting the unit Do not operate the unit with the chassis cover open Do not operate this unit when the outer cover or front panel is open Use suitable fuses Only use specified fuse types and rated specifications Avoid exposing circuitry When power is on never make contact with exposed adaptor or components When fault is suspected stop operation If you suspect a fault ask a qualified maintenance profes sional 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 UTD4000 Operating Manual Safety Messages and Symbols Safety terminology used in this manual The following messages may appear in this manual A Warning Warning statements identify conditions or practices that could result in injury or loss of life Caution Caution statements identify condi tions or practices that could result in damage to this unit or other properties Messages on the product The following messages may appear on the product Danger means potential damage that is immediate Danger means potential damage that is immediate Warning means potential damage that is not immedi ate Caution mea
51. n the USB device is inserted zone is the function key for alternative functions Table 2 18 Bitmap storage menu Function Menu Setup Explanatory Note Bitmap Export the display data to the USB device in bmp format Export Filename Default name of the file being exported to the USB device is UNI TO000 BMP OK Press this key to export to the USB device About INTERNAL and CSV formats You can select Internal or CSV format when you export the reference waveform to the USB device In Internal format it can only be imported to the oscilloscope in REF and not any other interface In CSV format it can be opened in EXCEL as it is a set of 2 dimensional data of voltage and time correlation SELECT K MEASURE ACQUIRE STORAGE a fcursor __ DISPLAY UTILITY AUTO Figure 2 24 Function key for the sampling system function Press the UTILITY button to pop up the setup menu for utility functions See Table 2 19 UTD4000 Operating Manual Table 2 19 Utility functions menu 1 Function Menu Setup Explanatory Note Configure Self Cal Version Erase RTC Setup Default Set Run auto system calibration Display information like oscilloscope software and hardware versions Clear all saved reference waveforms and front panel status setups Set time and date Recall factory setup Preference Language Skin Menu Display Brightness Select one of the languages Clas
52. ng is displayed BW Limit Full 20M Full bandwidth Limit bandwidth to 20MHz to reduce noise display Volts Div Coarse Fine 1X 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 one of the values 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 UTD4000 Operating Manual 1 Setting up channel coupling Take the example of applying a signal to CH1 The signal being tested is a sine signal that contains DC Press F1 then F2 to select AC It is now set up as AC coupling DC quantities of the signal being tested will be intercepted The uci display is as follows IA chi Coupling T REESEN AC coupling FULL setup Yolts Div Coarse d a on CH1 500m H 200us 0 000us ECHI 20 00m Figure 2 1 DC quantities of the signal are intercepted Press F1 twice to select DC Both DC and AC quanti ties of the testing signal being inputted to CH1 can pass through The waveform display is as follows Coupling BEGE DC coupling FULL setup VYolts Div Coarse Probe CH 1 500m M 200us 0 000us E CHI 40 00m Figure 2 2 Both DC and AC quantities of the signal
53. nload online Save the document on a 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 as shown Figure 5 1 will appear on the screen UTD4000 Operating Manual Program Update System Welcome you are using USB Update progra Figure 5 1 USB upgrade confirmation After pressing F5 you will be prompted to select the upgrade document as shown in the figure below You can use the multifunction control knob to select the upgrade document you require then press F5 to go to the next step If there is only one program upgrade document on the USB device this prompt will not appear and you can go straight to the next step File UTD4102C uTD4062C igre sac lt Knob Aetion F1 Cancel FS 0K Figure 5 2 Selection of the USB upgrade document 4 When F5 is presses as shown in Figure 5 2 the following prompt will appear Are you sure to update F5 Yes F1 No Program Update System ML ANY AYA JMU date program 3 2 Ok Figure 5 3 Confirming the USB upgrade document UTD4000 Operating Manual 5 When the USB document is confirmed the follow ing prompt will appear Please waitting for update This process may take 3 to 5 minutes Program Update System JUL AA a o AN Update program will happen Figure 5 4 USB upgrade in
54. ns possible damage to this product or other properties UTD4000 Operating Manual Symbols on the product The following symbols may appear on the product High voltage Caution Refer to manual ay L Ground terminal Protective ground terminal for chassis Ground terminal for testing Preface This manual provides information on the operation of the UTD4000 digital storage oscilloscope series G uidance is given in several chapters as follows Chapter 1 User Guide Simple guide to oscilloscope functions and installation Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Appendix A Appendix B Appendix C Instrument Setups Guide to operation of the UTD4000 digital storage oscilloscope series Practical Illustrations Example illustrations are pro vided to solve various testing problems System Prompts and Trouble shooting Servicing and Support Appendixes Technical Indicators Accessories for UTD4000 Oscilloscopes Maintenance and Cleaning UTD4000 Operating Manual UTD4000 Introduction UTD4000 oscilloscopes 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 7 models of this digital storage oscilloscope series Model Bandwidth Single Channel Dual Channel Equivalent Sampling Rate Sampling Rate Sampling Ra
55. o measurement Read the following instructions to familiarize with all the powerful auto matic measurement functions of your UTD4000 UTD4000 Operating Manual a oc SELECT MEASURE ACQUIRE STORAGE ma E E CURSOR DISPLAY UTILITY AUTO Figure 2 25 Function keys of the sampling system auto measurement Application Examples The measurement menu of your oscilloscope is capable of measuring 27 waveform parameters Press MEASURE to enter the parameter measure ment display menu which has 4 options that corre spond to function keys F1 F4 To operate any individual option press the assigned function keys F1 F4 to enter the setup menu for that function You can measure voltage or time measurement You can select with the Customize Parameters option To enter the menu press F2 and select the required parameters with the multifunction control knob then UTD4000 Operating Manual press SELECT to confirm you can display up to 4 parameters You can also press F1 and select All Parameters to show all voltage and time measure ment parameters of the current channel To quit All Parameters press CLOSE Example 1 To display the measurement peak to peak value of CH2 follow the steps below 1 Press CH2 to select channel 2 2 Press MEASURE to enter the measurement func tions menu 3 Press F2 to enter the measurement parameters options 4 Turn the multifunction control knob to the
56. oldoff function to synchronize complicated waveforms Operation 1 Follow the normal signal synchronization proce dure and select the edge and trigger source in the trigger MENU Adjust the trigger level to make the waveform display as stable as possible 2 Press the horizontal 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 Operation tips Holdoff time is usually shorter than the big cycle time When observing the RS232 com munication signal it is easier to observe if the holdoff time is slightly shorter than the starting edge time of every datum 1 Trigger source This means the signal for trigger Trigger can be obtained from various sources Input channel CH1 CH2 external trigger EXT EXT 5 grid CH1 and CH2 alternate Input Channel The most common trigger source is input channel choose CH1 or CH2 The selected trigger source can operate normally whether the input is displayed or not External Trigger This type of trigger source can be directly input through the external trigger input terminal For example you can use an external clock or the signal from a circuit to be tested as the trigger source Both EXT and EXT 5 trigger sources use external trigger signals from the EXT TRIG adaptor EXT can use the signals directly You can use EXT 45 within the
57. olve this problem 87 Chapter 5 Service and Support Warranty UTD4000 Series Digital Storage Oscillo scopes 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 3 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 product or provide a replacement in exchange according to detailed provisions 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 88 UTD4000 Operating Manual and suitability for any specific purpose Under no circumstance will UNI T bear any liability for any indirect special or subsequent loss Using the USB Upgrade Program The USB upgrade program makes upgrade easier and more flexible To use this function follow the steps below 1 The model name software version and hardware version of your oscilloscope are listed in Table 2 19 2 The software that corresponds with the model and hardware version of this oscilloscope i e the update document is available for dow
58. om 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 UTD4000 Operating Manual 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 UTD4000 can automatically measure the frequency cycle rising time falling time positive pulse width negative pulse width delay 12 rising edge delay 12 falling edge positive duty ratio negative duty ratio and 10 time parameters Defini tions of these parameters are as follows RiseTime The time taken by the waveform amplitude to rise from 10 to 90 FallTime The time taken by the waveform amplitude to fall from 90 to 10 Positive Pulse Width Width The pulse width when positive pulse is at 50 amplitude Negative Pulse Width Width The pulse width when negative pulse is at 50 amplitude Rising delay Rise Delayed time of the rising edge of CH1 CH2 UTD4000 Operating Manual Falling delay Fall Delayed time of the falling edge of CH1 CH2 Positive duty ratio Duty R
59. on choose between 1 and 10 In the case of external storage device plug in the USB device then press F5 then press F1 and the multifunction control knob to select the correspond ing file name To save a reference waveform on the USB device see the STORAGE menu Setting Up the Horizontal System Horizontal Con trol Knobs There are two horizontal control knobs The SED DIV knob is for changing the horizontal time base while the horizontal shift knob is for changing the relative position of the trigger point on the screen Horizontal control knob Display the horizontal menu see Table 2 6 Table 2 6 Function Menu Setup Explanatory Note Window Main Extended Press F1 to switch between main window and window extension Dual Xbase Mode Main time base or dual time base M1 Base Select the channel to be displayed CH1 or CH2 X Adjust Select main time base M1 or delay time base M2 M2 Shift Select fine tune or coarse tune shift Holdoff Adjust holdoff time with the multifunction control knob HORIZONTAL Definitions of Horizontal Parameter Icons C The signal frequency nae currently selected as the menu trigger source SECIDIV D Position of the current waveform triggering point 3 Trigger level of the current waveform 4 The distance between Figure 211 Horizontal the triggering position and systemi conor internace the h
60. ontrol zone to display the time base setup menu 3 Press F3 to enter dual time base setup 4 Press F1 to select dual time base then press F2 to select CH1 Press F3 to set time base graticule to M1 Adjust the M1 time base range with the SEC DIV knob as shown in Figure 3 14 Then press F3 to select M2 and adjust the M2 time base range with the SEC DIV knob as shown in Figure 3 14 5 Shift the M2 time base with the multifunction control knob to show the parts you require to observe in detail When shifting M2 press F5 to choose coarse or fine tune Illustration 11 Using the Logic Analyzer 1 Setting the LA channel 1 Insert the LA probe into the interface at the rear of the oscilloscope CH 1 500m ah 20 0us DA S00ns CH1 ALL LINE Figure 3 14 Dual time base function 2 Press the LA function key to access the LA menu 3 Press F1 to activate the LA function then press F2 for channel setup 4 Press F1 and then the multifunction control knob to select channel Press F3 to open that channel and then press F2 and turn the multifunction control knob to shift that channel 5 Repeat step 4 until all required channels are displayed 6 Press F5 to go to the next page Press F2 to set waveform height to High then press F5 to return to the LA menu The above channel selection and shifting operations must be set with the multifunction control knob If you have to open more than one ch
61. orizontal centre point SOs SEC DIV time Time base of the main time base M1 i e SEC DIV UTD4000 Operating Manual BW Limit 20M M 100ns O 0N0us E CHI 20 00m Figure 2 12 Definitions of horizontal parameter icons UTD4000 Operating Manual Window Extension Window extension can be used to zoom in a band of waveform to check image details as shown in Figure 2 13 Horizontal extension of the waveform Main window Extended window y The horizontally extended waveform Figure 2 13 Display with the window extended In the window extension mode the display is divided into two zones as shown above The upper part displays the original waveform and the lower part displays the extended waveform You select the wave form area to be magnified by turning the horizontal POSITION knob and SEC DIV knob Dual Time Base Function The dual time base function is similar to window exten sion but there is a fundamental difference In the exten sion time base mode you can magnify the waveform 100 times whereas in the dual time base mode you can magnify details of the waveform being observed by thousands of times In effect the main time base storage depth is increased by thousands of times Dual time base operation instructions Press the horizontal setup menu then press F3 to enter the dual time base menu Press F1 to activate the dual time base function To
62. peak to peak value 5 Press SELECT to confirm then press CLOSE to exit The peak to peak value is displayed in the left bottom corner 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 Mea sure as follows 1 As shown in the previous example select rising delay in the measurement parameters menu 2 Press SELECT to display the rising delay param eter 3 Press CLOSE to exit the parameter options 4 The rising delay parameter is displayed in the left bottom corner Automatic measurement of voltage parameters Your UTD4000 can automatically measure the following voltage parameters Peak to peak value Vpp The voltage value from the highest point to lowest point of the waveform 61 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 of the sum of waveform top and bottom voltage Top value Vtop The voltage value from the level top to ground GND of the waveform Base value Vbase The voltage value fr
63. play In this status you can further adjust the vertical and horizontal range until you get the desired waveform display UTD4000 Operating Manual 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 Press MEASURE to display the automatic mea surement menu Press F2 to enter the measurement type selection menu Use the multifunction control knob in the top left corner of the front panel to select peak to peak value then press SELECT to confirm Next use the multifunction control knob to select frequency then press SELECT to confirm Press MENU ON OFF to exit the selection menu Peak to peak and frequency measurements will now appear in bottom left corner of the screen MEASURE All gs ie ai ae Select LOY AD ee ek Une eet SEE SP eh ee ts RL trekt REET arns oe EEPE Seriene Aeg EARDER A Eeg sf oe it be cies Close Clear h 2 00ms O 000us CHI A 16 00mv Figure 3 1 Automatic measurement 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 terminal Connect CH2 to the output terminal Steps 1 To display CH1 and CH2 signals e Press AUTO e Continue to adj
64. press this button the system plays back and displays the number of the rewinding screen in the top centre area By turning the multi function control knob on the upper front panel now you can suspend playback Turn the knob further and you can select the waveform of a certain screen to be played back repeatedly 3 If you wish to continue full playback press F2 to stop and then press F1 4 You can record as many as 100 screens data If AUTO is pressed after a waveform is recorded it will be deleted Record button Press this button then the MENU ON OFF key to record The number of screens recorded is displayed in the top centre area This function is disabled in dual time base average envelop roll and long storage modes Important Points Auto Calibration You can correct measurement errors caused by environmental changes with the auto calibration function This process can be run selec tively when necessary To make calibration more accu rate power on your oscilloscope and allow 20 minutes to warm up Then press the UTILIITY button help function and follow on screen instructions Choose your language Your UTD4000 can be oper ated in many languages To select a display language press the UTILITY menu button and then LANGUAGE in Interface setup to choose your desired language Automatic Measurement As shown below the MEASURE button is the func tion key for aut
65. progress UTD4000 Operating Manual 6 When upgrade is complete a successful upgrade prompt will appear Congratulation Update process Success Pleases pull out U disk and reboot The oscilloscope program is now updated and system upgrade is complete In the event of upgrade failure follow the steps below Program Update System Figure 5 5 USB upgrade success Caution If upgrade fails due to power interruption power off the oscilloscope and repeat all the USB upgrade steps Below are some common causes for upgrade failure 1 No upgrade document If there is no document with the suffix uts the following message will appear when F5 is pressed after powering on Can t find the valid update file at U disk root directory Please Sure there is update file at U disk s root directory Please pull out U disk and reboot Program Update System tls PANS ORS Welcome you are using USB Update program 3 2 Figure 5 6 No valid upgrade file 2 The user cancels the upgrade process 1 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 Please pull out U disk and reboot Program Update System Figure 5 7 Cancel upgrade 1 UTD4000 Operating Manual 2 During the upgrade process you can cancel upgrade by pressing F1 To cancel upgrade and op
66. r setup it is neces sary to set up the probe attenuation factor in the chan nel operation menu accordingly For example when the probe attenuation factor is 10 1 set the probe attenua tion 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 TRIG ED F 998 CH1 Coupling ACINO BW Limit FULL v al Coarse 10 Invert Probe attenuation factor Off Vertical range movement Figure 2 6 Setting up the probe attenuation factor in the channel menu 23 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 10V 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 10V div without interruption Note VOLTS DIV range of vertical deflection factor of the UTD4000 series varies from model to model TRIG ED T CH1 AEA Coupling PL ACIN BW Limit FULL Yolts Div f Fine tune setup Invert CHI 525m Off M 200us 0 000us ECHI 40 00nv Figure 2 7 Coarse tuning and fine tuning the vertical
67. rigger Trigger is set to occur when the signal is at the rising or falling edge You can set the trigger level to change the trigger point s vertical position on the trigger edge i e the intersection point of the trigger level line and the signal edge on the screen Pulse trigger When the pulse width of the trigger signal reaches a preset trigger condition trigger occurs Video trigger Carry out field or line trigger to stan dard video signals Slew rate trigger Trigger condition is the signal rising or falling rate LA trigger Trigger condition is the pattern or duration input by the logic analyzer To use this trigger mode you must have a LA probe installed and turned on Below are notes for various trigger menus Edge Trigger For edge trigger menu setups please see Table 2 7 Function Menu Setup Explanatory Note Type Edge Source CH1 Set CH1 as the signal source trigger signal CH2 Set CH2 as the signal source trigger signal EXT Set the external trigger input channel as the signal source trigger signal EXT 5 Divide the external trigger model by 5 LINE Set grid trigger CH1 amp CH1 and CH2 trigger their respective CH2 signals alternately UTD4000 Operating Manual Table 2 7 Con t Function Menu Explanatory Note Set one of the channels between DO D15 as the signal source trigger signal the LA function must be enabled Coupling DC Allow AC and DC quantities of t
68. sam pling waveform display please see Figure 2 19 and Figure 2 20 NeT TRIGED RRSO ACQUIRE Acquisition Normal erep ttitt XS f ce em Length P z N aoe p Normal SR eee ey Fast ACO off M50 0ns 142 000ns CHI 20 00n Figure 2 19 Waveform without average sampling TRIGED ACQUIRE Acquisition Average Averages Porerarone scores wg CH 1 500m W 50 0ns 142 000ns E CHI 20 00m Figure 2 20 Waveform display when 32 time average sampling is selected Definitions Normal mode The digital storage oscilloscope acquires signal sample at equal and regular inter vals to reconstruct the waveform Peak detect mode In this acquisition mode the digital storage oscilloscope identifies the biggest and smallest values of the input signals at each sampling interval and uses these values to display the waveform In effect it 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 digital storage oscilloscope acquires several waveforms and takes the aver age value to display the final waveform You can use this mode to reduce random noise Envelop mode Waveforms of different ampli tudes are acquired Sampling points of all relative triggering points recorded at the same time are calculated and the maximum value and minimum value are displayed In the envelop mode peak
69. serve the following types of signals CH2 Set operand 1 as CH2 waveform e Measure the harmonic wave composition and Operator Operand 1 Operand 2 distortion of the system Operand 1 Operand 2 Demonstrate the noise characteristics of the x Operand 1 x Operand 2 DC power gt Operand 1 Operand 2 Analyse oscillation Source 2 Set operand 2 as CH1 waveform Table 2 3 Explanatory notes for the FFT menu Set operand 2 as CH2 waveform Function Menu Setup Explanatory Note Compress Scale the waveform by ratio Type FFT To carry out FFT algorithm There are four ratios to choose functions from 1 1 1 10 1 100 1 1000 Source CH1 Set CH1 as math waveform CH2 Set CH2 as math waveform Windows Hamming Set Hamming window function Blackman Set Blackman window function Rectangle Set Rectangle window function Hanning Set Hanning window function UTD4000 Operating Manual How to use FFT functions Signals with DC quantities or DC offset will cause error or offset of FFT waveform quantities To reduce DC quantities select AC coupling To reduce random noise and frequency aliasing resulted by repeated or single pulse event set the acquiring mode of your oscilloscope to aver age 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
70. set vertical shift horizontal shift and holdoff to the zero position center point 2 Change the vertical setups and check 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 VOLTS DIV knob to change the vertical VOLT DIV range You will find that the range in the UTD4000 Operating Manual current status column changes accordingly Press CH1 CH2 MATH or REF and the screen will show the operation menu icon waveform and range status information of the corresponding channel Press OFF to close the selected channel Getting to Know the Horizontal System Horizontal controls are shown in the figure below The following steps will get you familiar with horizontal time base setups HORIZONTAL 4 POSITION a Vist SEC DIV 50s SECIDIV Figure 1 10 Horizontal controls UTD4000 Operating Manual 1 Use the horizontal SEC DIV knob to change the horizontal time base setup Turn the horizontal SEC DIV knob to change the SEC DIV time base range You will find that the time base range in the current status column of the corresponding channel changes accordingly Range of horizontal scanning rate is 5ns 50s div UTD4102C in steps of 1 2 5 Note Minimum time base range of the UTD4000 Series varies from model to model 2 Use the horizontal POSITION knob to adjust the horizontal po
71. sic traditional modern Set the waiting time for automatic menu shutoff 5s 10s 20s and manual Adjust the brightness of the waveform style zone with the multifunc tion control knob Pass Fail Enable Output Turn the testing function on or off this function is disabled in the dual time base and roll operation modes Set to output signal to pass or fail The signal is output through the PASS FAIL interface at the rear of the oscilloscope UTD4000 Operating Manual Table 2 19 Utility functions menu 2 Function Menu Setup Explanatory Note Source Designate testing type as CH1 or CH2 Message Open or close the test result Operate Run or stop the PASS FAIL test Stop Setup Set the stop testing conditions Mask Setup Create a module of test conditions Recording waveform See Table 2 21 Setup for waveform recording Next page 1 2 Go to the next page Table 2 20 Utility functions menu 3 Function Menu Explanatory Note Turn the frequency counter on Turn the frequency counter off Select LAN or GPIB interface Interface To set address by multipurpose knob and select key then press close key to save new address Cymometer Next page 2 2 Return to the previous menu UTD4000 Operating Manual Table 2 21 Waveform recording menu Function Menu Setup Explanatory Note E F2 Stop recording gt F1 1 Playback button 2 When you
72. sition of the signal in the waveform window When the horizontal POSITION knob is turned you can see that the waveform moves horizon tally with the knob 3 Press MENU to display the ZOOM and dual time base menu In this menu press F1 to activate window expansion Then press F1 again to quit window expansion and return to the main window To access dual time base setup press F3 You can also set the holdoff time with the multifunction control knob 43 Shortcut key for resetting the trigger point shift to horizontal zero position When trigger point has moved from the horizontal centre point considerably by way of horizontal shift pressing the shortcut key SET TO ZERO can quickly reset the trigger point to the vertical centre point You can also turn the knob to make adjustments Definition Trigger point means the actual trigger point relative to the centre point of the storage device When it is at the horizontal centre point it is also at the centre point of the storage device By turning the horizontal knob you can move the trigger point horizontally Holdoff means the time interval until the trigger circuit is next reactivated Turn the multifunction control knob to set the holdoff time By adjusting the holdoff time you can observe combination or com plex signals more effectively Getting to Know the Trigger System Trigger controls are shown in the figure 1 11 The following steps will get you
73. stem Functions menu All specifications are guaranteed unless noted Typical UTD4000 Operating Manual Technical Indicators Acquisition Acquisition modes Real time Equivalent Acquisition rates 2GS s 50GS s UTD4302C UTD4202C UTD4152C Average When all channels have made N acquisitions simultaneously N is selectable from 2 4 8 16 32 64 128 to 256 Input Input coupling DC AC GND Input impedance 1MQ 1 5 in parallel with 24pF 3pF Probe attenuation factor 1X 10X 100X 1000X Maximum input voltage 400V DC AC Peak 1 MQ input impedance 10 1 probe attenuation 5V Vrms BNC Time delay between channels Typical 150ps UTD4000 Operating Manual Horizontal Waveform interpolation Sin x x Storage depth 24K Max Equivalent storage depth dual time base 60M Recording length 1024K Scanning range s div 1ns div 50s div 300MHz 2ns div 50s div 200MHz 150MHz 5ns div 50s div 100MHz 80MHz 60MHz 40MHz At 1 2 5 increment Accuracy of sampling rate and delay time 50ppm any time interval 21ms Time interval AT measurement accuracy full bandwidth Single 1 sampling time interval 50ppm x reading 0 6ns gt 16 average values 1 sampling time interval 50ppm x reading 0 4ns UTD4000 Operating Manual Vertical Model A D
74. te UTD4042C 40MHz 2GS s 1GS s UTD4062C 60MHz 2GS s 1GS s UTD4082C 80MHz 2GS s 1GS s UTD4102C 100MHz 2GS s 1GS s UTD4152C 150MHz 50GS s UTD4202C 200MHz 50GS s UTD4302C 300MHz 50GS s UTD4000 Operating Manual UTD4000 oscilloscopes offer a user friendly front p anel with clear indications to allows access to all basic functions for easy operation The scaling and position buttons for all channels are optimally arranged for direct view operation As design is based on the controls 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 an AUTO key to instantly display the appropriate waveform and range position The performance features listed below will explain why UTD4000 series can fully satisfy your testing and measurement requirements o 2GS s real time sampling rate dual channel 1GS s single channel 2GS sand 50GS s equivalent sampling rate UTD4152C UTD4202C UTD4302C Dual time base function unrivaled waveform detail observation and analysis capabilities e 24k storage depth 60M equivalent storage depth 1024k recording length e 16 channel logic analyzer 3 digital multime ter e Unique envelop sampling feature with direct visual display of carrier wave details after amplitude modulation e Quick waveform acquisition and colour change
75. ter the stop setup menu Press F1 to select the stop type Press F2 to set the stop condition Press F3 then turn the multifunction control knob to set the threshold 5 Set the output condition Press PREVIOUS PAGE then F2 to set the output condition 6 Begin checking Press F1 to enable check then press F4 to open the display information This function is disabled in dual time base and roll operation modes Figure 3 11 Stop condition satisfied 81 Illustration 9 Quick acquisition In the ACQUIRE menu F5 is the key for quick acquisition To observe the rapidly changes of a waveform activate this function The oscilloscope will depicts waveform strength with dark and light colour ACQUIRE Acquisition Mem Length Normal Fast ACQ Figure 3 12 Quick acquisition OFF UTD4000 Operating Manual ACQUIRE d Acquisition lem Length Normal CH2 200m W 20005 0 000us HCH 240mnV Figure 3 13 Quick acquisition ON Illustration 10 Using the dual timebase function In the dual time base mode you can enjoy unrivaled detailed observation of a waveform For example you can observe the colour synchronized signal of the video signal clear observation is impossible with ordinary oscilloscopes 1 To access a signal in CH1 follow the Video signal UTD4000 Operating Manual trigger instructions in Illustration 7 Video signal triggering 2 Press MENU in the horizontal c
76. the glitch CH 1 200m M 100us 0 000us m CHI 16 00mY Figure 3 3 Single signal 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 interfer ence to the signal during measurement Waveform is shown below UTD4000 Operating Manual ACQUIRE Acquisition Normal iy hem Length Normal a 2 k 7 Fast ACQ oe M 200us 8 000us MCH1 1 60m Figure 3 4 Reducing random noise of signals Steps 1 As in the previous illustration set the attenua tion factor of the probe and CH1 2 Connect the signal to ensure stable display of waveform See the previous illustration for operation instruction See the previous chapter for guidance on UTD4000 Operating Manual adjusting the horizontal time base and vertical range 3 Improving trigger by setting trigger coupling 1 Press MENU in the trigger zone to display the trigger setup menu 2 Set trigger coupling to low frequency suppression or high frequency suppression By selecting low frequency suppression a high pass filter is set up It filters low frequency signal quantities under 80kHz and allows high frequency signal quantities to pass through If you select high frequency suppression a low pass filter is set up It filters high frequency signal quantities higher than 80kHz and allows low frequency sign
77. 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 Table 2 4 UTD4000 Operating Manual FFT Feature Most Suitable Measurement Item Rectangle The best frequency recognition rate the worst amplitude recognition rate Basically similar to a status without adding window 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 Hanning Frequency recognition rate is better than the rectangle window but ampli tude recognition rate is poorer Sine cyclical and narrow band random noise Hamming Frequency recognition rate is marginally better than Hanning window Temporary or fast pulse Signal level varies greatly before and after Blackman The best amplitude recognition rate and the poorest frequency recognition rate Mainly for single frequency si
78. ting Manual Manufacturer Uni Trend Technology China Limited No 6 Gong Ye Bei 1st Road Songshan Lake National High Tech Industrial Development Zone Dongguan City Guangdong Province China Postal Code 523 808 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 www uni trend com
79. tor corresponds with the probe attenuation you have chose 4 There is waveform display but it is not stable Check the trigger source setup in the trigger menu See whether it is the same as the actual signal input channel e 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 e Try changing the coupling display to high frequency suppression or low frequency suppression to filter any high or low frequency noise that is interfering with triggering 5 No display after pressing RUN STOP e Check if the trigger mode is set to normal or single in the menu and whether the level exceeds the wave form range If so move the level to the centre or set trigger mode to AUTO e Press AUTO to complete the setup 6 Display speed is slower after average sampling time is enabled e f average sampling is carried out for more than 32 times the display speed will drop This is normal e You can reduce the intervals of average sampling 7 Trapezoidal waveform display e 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 e f the display type is vector the connection between sampling dots may cause a trapezoidal waveform Set the display type to dot to s
80. trigger level range of 3V and 3V EXT 5 divide the trigger by 5 As a result trigger range is extended to 15V to 15V enabling the oscilloscope to trigger at a large signal Note The trigger level range of the UTD4000 series varies from model to model e Grid 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 2 Trigger mode To cause the digital storage oscil loscope to generate a trigger signal This oscilloscope offers three trigger modes for selection auto normal and single e Auto Trigger The system will sample 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 g ec or slower the Auto mode is a continuous UTD4000 Operating Manual scanning process Normal Trigger In this mode your oscilloscope samples waveforms only when triggering conditions are met The system stops acquiring data and waits when there is no trigger signal When the trigger signal is generated trigger scan occurs Single Trigger In this mode you only have to press the Run button once and the oscilloscope will wait for trigger One sampling will oc
81. ult in measurement error or fault Please adjust probe compensation as follows 13 1 In the CH1 menu set the probe to 10X Move the switch on the probe to 10X and connect the probe to CH1 Connect the probe tip to the probe compensator s signal output connector then connect the ground clamp to the ground wire connector of the probe compensator Display CH1 and press AUTO 2 Observe the shape of the displayed waveform PLL FL Overcompensation Correct Compensation ESE Undercompensation Figure 1 8 Probe compensation calibration UTD4000 Operating Manual 3 If you see an Undercompensation or Overcom pensation waveform display adjust the adjustable tab inside the adjustment hole at the tip of the probe with the adjusting rod in the probe accessory pack until a Correct Compensation waveform shown in Figure 1 8 is displayed A 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 Setups for Waveform Display Your UTD4000 oscilloscope features an autoset func tion 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 autoset function can only be operated when the signal to be measured is 50Hz or above and the duty
82. und the product and accessories performing satisfac torily 2 Check the accessories A checklist of accessories that come with your UTD4000 oscilloscope is provided in the section UTD4000 Acces sories of this operating manual Please check for 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 operat ing normally or it fails to pass the performance test please contact your UNI T dealer or our local office Functional Check Carry out a quick functional check in the following steps to make sure your oscilloscope is operating normally 1 Power on the unit Power on the unit Power supply voltage is 100 240V AC 45 440Hz After connecting to power start the self calibration process by pressing the UTILITY button utility function once and F1 twice Then press SELECT to run To go to the next page press UTILITY F1 THEN F5 To run the factory default setup press F1 then SELECT as shown in Figure 1 4 When the above procedure is complete press CH1 to enter the CH1 menu UTILITY button Power ON OFF button Figure 1 4 A Warning To avoid danger ensure the digital storage oscilloscope is safely grounded 2 Accessing signals Your UTD4000 oscilloscope has dual input channels and one external trig
83. ust the horizontal and vertical range until you get the desired waveform display e Press CH1 to select CH1 Adjust vertical position of the CH1 waveform by turning the vertical position control knob e 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 UTD4000 Operating Manual 2 Observing the delay caused by a sine wave signal passes through the circuit and observing waveform changes When measuring channel delay automatically press MEASURE to display the automatic measure ment menu Press F2 to enter the measurement type selection menu Use the multifunction control knob to select rising delay You can see the delay value in the bottom left corner of the screen Observe waveform changes see the figure below CH2 500m 0 000us CHI 1i6 00my Figure 3 2 Waveform delay UTD4000 Operating Manual Illustration 3 Acquiring single signals The advantage and special feature of your digital storage oscilloscopes lie in its ability to acquire non cyclical signals like pulse and glitch To acquire a single signal you must have transcendental knowl edge of that signal to set the trigger level and trigger edge For example if the pulse is a logical signal of TTL level the trigger level should be set at about 2V and the trigger edge should be set to rising edge trigg
84. value Refresh rate Bottom value Single trigger Technical indicators Vertical system Waveform inversion Waveform recording Acquisition Pulse trigger Cursor measurement Video trigger 108 UTD4000 Operating Manual Cleaning Average Top value Average mode Positive pulse width Warranty Power source Operand Edge trigger Bandwidth limit Alternate trigger Troubleshooting Cursor measurement Window extension Tracking Display system Video synchronization Display type Field synchronization Standard accessories Storage and recall Real time sampling RUN button Measuring simple signals Mechanical specifications Automatic setup Automatic measurement Automatic trigger Self calibration Using the RUN button Line synchronization Horizontal system Negative pulse width Factory setup Root mean square value Functional check Peak measurement External trigger Peak to peak UTD4000 Operating Manual Trigger system adjustment setup Trigger coupling Delayed measurement Input channel Channel setup Interface design Channel coupling Overshoot Pretrigger Preshoot Reducing signal random noise Probe compensation Amplitude Probe attenuation rate Positive duty ratio Sampling system Negative duty ratio Coarse tune fine tune Utility functions Maximum Minimum Equivalent sampling Contact us Math functions Trigger level Trigger setup UTD4000 Operating Manual This operating manual may be revised without prior notice UTD4000 Opera
85. w is the trigger menu Table 2 11 VIDEO SETUP Standard d 2000 0 000 Figure 2 16 Video trigger field synchronization Slew Rate Trigger UTD4000 Operating Manual Table 2 11 Function Menu Setup Explanatory Note Type Slope Source CH1 CH2 EXT EXT 5 LINE CH1 amp CH2 Set CH1 as the signal source trigger signal Set CH2 as the signal source trigger signal Set the external trigger input channel as the signal source trigger signal Divide the external trigger source by 5 times Set grid trigger CH1 and CH2 trigger their respective signals alternately Coupling DC AC LF Reject HF Reject Allow AC and DC quantities of the trigger signal to pass Intercept DC quantities of the trigger signal Reject low frequency quantities and allow only high frequency quantities to pass Reject high frequency quantities and allow only low frequency quantities to pass Auto The system automatically acquires 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 Table 2 11 Con t UTD4000 Operating Manual Mode Normal Single The system stops acquiring data when there is no trigger signal When the trigger signal is generated trigger scan occurs One trigger will occur when there is an input trigger signal Then trigger will stop

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