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UT4000 Series Digital Storage Oscilloscope User Manual

1. eee Bandwidth limit Troubleshooting Window extension Display system Display type Standard accessories Real time sampling Measuring simple signals Sec div Ch Pulse width trigger Language selection Ol e ee Using the RUN button Horizontal system Factory setup Functional check External trigger Average occ eeeee eee Average mode Positive pulse width Power source Edge trigger Alternate trigger Cursor measurement Tracking 24044 eee A Video synchronization Field synchronization Storage and recall 85 SPODEVAIUS Sees elt Teh eae eed se anane Bottom Value SEENEN 15 23 45 45 66 20 43 28 29 73 45 40 67 21 15 65 25 37 81 T3 52 11 28 45 10 48 24 42 33 45 36 29 77 12 31 47 47 29 29 39 UNI To UNI To UT4000 User Manual RUN DOR ege 54 Mechanical specifications 81 Automatic Setup 52 Automatic measurement 44 Automatic trigger oo cece cece ence ence EPEn RI tenes enaeeneeeaes 33 Selbcalibration ege 42 Line synchronization ieee ecee eee e ence snes eneeeeaes 30 Negative pulse Width ok ccee cece eee e eee e scenes eeneees 29 Root mean square Value cece cece esc e eee e eee iiias 45 Peak measurement 35 Peak to peak aieri vee eeh 45 Acquiring single signals cccecceeec eens eeeeeneee
2. System upgrade is in ress Please wait This process may take 3 to 5 minutes Figure 5 4 USB upgrade in progress 6 When upgrade is complete a successful upgrade prompt will appear Upgrade is successfully complete Please remove USB device then power off your oscilloscope and power it back on again to complete the process The oscilloscope program is now updated and system upgrade is complete In the event of upgrade failure follow the steps below Program Update System ate program Figure 5 5 USB upgrade success 70 UNI To UT4000 User Manual 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 Please ensure there is update file on the USB device then restart the operation Program Update System Welcome you are using USB Update progr 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 Fl To cancel upgrade and operate your oscilloscope normally follow the on screen instructions Remove the USB device and reboot Program Update System
3. 58 UNI To UT4000 User Manual 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 waveform display VIDEO SETUP Standard Pal Syne Even Field MN 20 0us O0 000us HMH EVEN FIELD Figure 3 8 Video field triggering 59 UNI To UT4000 User Manual 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 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 F2 then F4 to select specified line synchronization 6 Use the multifunction control
4. 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 trigger 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 standard 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 Table 2 7 Function Menu Setup Explanatory Note Type Edge Signal source CH Set CH1 as the signal source trigger signal selection 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 AC Set grid trigger CH1 amp CH2 CH1 and CH2 trigger their respective signals alternately 27 UNI To UT4000 User Manual Table 2 7 Con
5. Operand 2 Operand 1 Operand 2 x Operand 1 x Operand 2 Operand 1 Operand 2 Operand 2 CH1 Set operand 2 as CH1 waveform CH2 Set operand 2 as CH2 waveform Scaling ratio 1 1 Scale the waveform by ratio There are four ratios to 1 10 choose from 1 1 1 10 1 100 1 1000 1 100 1 1000 FFT spectrum analysis By using the FFT Fast Fourier Transform algorithm you can convert time domain signals YT into frequency domain signals With FFT you can conveniently observe the following types of signals e Measure the harmonic wave composition and distortion of the system e Demonstrate the noise characteristics of the DC power e Analyse oscillation 21 UNI To UT4000 User Manual Table 2 3 Explanatory notes for the FFT menu Function Menu Setup Explanatory Note Type FFT To carry out FFT algorithm functions Signal source CH1 Set CH1 as math waveform CH2 Set CH2 as math waveform Window function Hamming Ser Hamming window function Blackman Set Rectangle window function Rectangle Ser Blackman window function Hanning Set Hanning window function 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 average acquisition
6. UNI To 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 300 nit Typical Display Languages Simplified Chinese Traditional Chinese English Probe Compensator Output Output Voltagejabout 3V into peak to peak at gt 1 MQ load Typical Frequency Typical 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 Source Voltage 100 240VACpms 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 Forced fan cooling Humidity 10 C 30 C lt 95 5 RH 30 C 40 C lt 75 5 RH Altitude Operating under 3 000m Non operating under 15 000m 81 UNI To UT4000 User Manual Mechanical Specifications UT4000 Dimension Width 336 mm Height 177 mm Depth 174mm Weight Unit only 3 8kg Including package 6 5kg IP Protection Ip2 X Adjust the frequency We recommend setting a one year frequency Appendix B Accessories for UT4000 Oscilloscopes
7. 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 62 CH 1 500m iN 20 0us HS Figure 3 14 Dual time base function 63 UNI To UT4000 User Manual Illustration 11 Using the Logic Analyzer l 64 Setting the LA channel 1 Insert the LA probe into the interface at the rear of the oscilloscope 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 channels 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 chann
8. Reducing display noise by setting the acquisition mode If the signal being measured is stacked with random noise and the waveform is too coarse as a result you can use the average 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 observation and measurement requirements See the figure below OF 55 UNI To UT4000 User Manual ACQUIRE Acquisition Average Averages Normal Fast ACQ Off CHI 20 0m MN 200us 8 000us HCH 1 60mv Figure 3 5 Signal noise suppressed 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 Illustration 5 Using cursors for measurement Your oscilloscope can measure 27 waveform parameters automatically All auto parameters can be measured with the cursors By using cursors you can quickly measure the time and voltage of a waveform Measuring the frequency of Sinc firs
9. Select the FFT Window Assuming the YT waveform is constantly repeating itself the oscilloscope will carry out FFT conversion of time record of a limited length When this cycle is a whole number the YT waveform will have the same amplitude at the start and finish There is no waveform interruption However if the YT waveform cycle is not a whole number there will be different amplitudes at the start and finish resulting in transient interruption of high frequency at the connection point In frequency domain this is known as leakage To avoid leakage multiply the original waveform by one window function to set the value to 0 for start and finish compulsively For application of the window function please see the table below Table 2 4 FFT Window Feature Most Suitable Measurement Item Rectangle The best frequency Temporary or fast pulse Signal level is recognition rate the worst generally the same before and after Equal amplitude recognition rate sine wave of very similar frequency There Basically similar to a statusjis broad band random noise with slow without adding window moving wave spectrum Hanning Frequency recognition rate is Sine cyclical and narrow band random better than the rectanglejnoise window but amplitude recognition rate is poorer Hamming Frequency recognition rate is Temporary or fast pulse Signal level marginally better than varies greatly before and after Hanning window Blackman
10. Standard Accessories Two 1 5m 1 1 10 1 passive voltage probes For details please read the probe manual EN61010 031 2002 standard Rating is 150V CAT I when the switch is in the 1X position Rating is 300V CAT I when the switch is in the 10X position e Ohne international standard power cord e One User Manual e One Product Warranty Card e UT4000 communication control software USB Device e USB cable UT D04 e Two multimeter pens and two current voltage convertor modules UT M03 UT M04 e UT4000 logic analyzer probe UT P06 Optional Accessories e UT4000 LAN module UT MO1 e UT4000 GRIB module UT M02 All accessories standard and optional are available by order at your local UNI T dealers 82 UNI To UT4000 User Manual Appendix C Maintenance and Cleaning General Care Do not store or leave the oscilloscope where the LCD display will be exposed to direct sunlight for long periods of time Caution To avoid damage to the oscilloscope or probes do not expose them to sprays liquids or solvents Cleaning 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
11. When the horizontal POSITION knob is turned you can see that the waveform moves horizontally with the knob 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 t 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 complex signals more effectively UNI To UT4000 User Manual Getting to Know the Trigger System Trigger controls are shown in the figure below The following steps will get you familiar with trigger
12. and 2mV div or 5mV div is selected 3 x reading 0 1 div ImV and 10mV div 10V div is selected When vertical position is not zero and N gt 16 5 x reading vertical shift reading 1 x vertical shift reading 0 2div Set from ImV div to 200mV div 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 gt 16 waveforms acquired waveforms is taken 3 x reading 0 05 div 78 UNI To UT4000 User Manual Trigger Trigger sensitivity lt 1 div Trigger level range Internal 8 div from the centre of the screen EXT 3V EXT 5 15V Trigger level accuracy Internal 0 3 div x V div within 4 Typical applied on signals of gt 20ns rise or fall time div from the centre of the screen EXT 6 default value 40mV EXT 5 6 default value 200mV Pretrigger capability Normal mode scanning mode pretrigger delayed trigger Pretrigger depth is adjustable Holdoff range 100ns 1 5s Set level to 50 Typical Input signal frequency gt 50Hz Edge Trigger Edge type Rise Fall Rise and Fall Pulse Trigger Trigger mode Greater than less than or equal to positive pulse Great
13. 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 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 TRIGED F 14 903 kHz Delaved time base M2 Main time base M1 CHT 1 60nv Figure 2 14 Dual time base 26 UNI To UT4000 User 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 FORCE To generate a compulsory trigger signal Mainly used in the trigger mode and
14. the MEASURE button is the function key for auto measurement Read the following instructions to familiarize with all the powerful automatic measurement functions of your UT4000 Tu fear O oss os eo Ei omm ctose fourson Tonn Tmun 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 measurement display menu which has 4 options that correspond 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 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 measurement 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 Press CH2 to select channel 2 Press MEASURE to enter the measurement functions menu Press F2 to enter the measurement parameters options Turn the multifunction control knob to the peak to peak value Press SELECT to confirm t
15. Indicators 75 Appendix A Technical indicators 75 Appendix B Accessories for UT4000 Oscilloscopes 81 Appendix C Maintenance and Cleaning 81 Index 83 UNI To UT4000 User Manual Chapter 1 User Guide UT4000 Series digital storage oscilloscopes are small 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 PRRD D PE When beginning to use your UT4000 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 UT4000 series digital storage oscilloscope as quickly as possible Your UT4000 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 similar 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 function keys You can use them to enter different function menus or access particular functions direct
16. Press AUTO 5 Adjust the vertical SCALE knob to make the displayed amplitude of the two channels to about equal 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 oy 57 UNI To UT4000 User Manual 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 Ifsin6 AorC B D O is the angle of disparity between the channels For definitions of A B C D see the above figure Calculating with this formula the angle of disparity is 0 arcsin A or 8 arcsin C B D If the elliptic main axis is within quadrants I and III the angle of disparity should be within quadrants I and IV i e inside O 2 or 32 27 2 2 If the main axis is within quadrants II and IV the angle of disparity should be within quadrants II and III i e inside n 7 or n 37 Furthermore if the frequencies and phase differences of two signals being measured are exact multiples you can calculate the frequency and phase correlation between the two signals 10 Table of X and Y phase difference quency ratio 0 degree 45 degree 90 degree 180 degree 270 degoreel 260 degree
17. UT4000 User Manual Measurement menu UNI To Operation Press MEASURE to display 4 function options as shown in the table below Table 2 22 Function Menu Setup Explanatory Note All parameters Display all parameters To close press CLOSE Customized Up to 4 parameters can be displayed on parameters screen Indicator Visual indication of the measurement value s physical properties by lines Clear measurement 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 Figure 2 26 Measurement parameters 46 UNI To UT4000 User Manual 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 Tu fener H Iess on oe EY omm ctose cursor fos Inn Tun 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 press SELECT on the front panel and the multifunction control knob to adjust the positions of the two cursors f
18. compensation calibration step will result in measurement error or fault Please adjust probe compensation as follows 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 PHI mn mon Overcompensation Correct Compensation Undercompensation Figure 1 8 Probe compensation calibration 3 If you see an Undercompensation or Overcompensation 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 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 UT4000 oscilloscope features an autoset function It can automatically adjust the vertical deflection factor scanning time base and trigger mode based on the input signal until the most appropriate waveform is displayed The autoset function can only be operated when the signal to be measured is 50Hz or above and the duty ratio is
19. 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 77 UNI To UT4000 User Manual Vertical Model UT4302C UT4202C UT4152C UT4102C UT4082C UT4062C UT4042C A D converter A D 8 bit resolution two channels sampling simultaneously Deflection factor V div 1 mV div 10 V div at input BNC Range V div Displacement range gt 10 div Analog bandwidth 300MHZ 200MHz 150MHz 100MHz 80MHz 60MHz 40MHz Single bandwidth 300MHZ 200MHz 150MHz 100MHz 80MHz 60MHz 40MHz Selectable analog bandwidth 20MHz limit Typical Low frequency responsel lt 5Hz at BNC AC coupling 3dB Rise time at BNC typical lt 1 1ns lt 1 8ns lt 2 3ns lt 3 5ns lt 4 3ns lt 5 8ns lt 8 7ns 300MHz 200MHz 150MHz 100MHz 80MHz 60MHz DC gain accuracy 40MHz When vertical sensitivity is ImV div average acquisition mode When vertical sensitivity is 2mV div average acquisition mode When vertical sensitivity is 5mV div 10V div 3 sampling or average acquisition mode 5 sampling or 4 sampling or DC measurement accuracy average acquisition mode When vertical position is zero and N gt 16 5 x reading 0 1 div ImV and 1mV div is selected 4 x reading 0 1 div ImV
20. multifunction control knob Clock setup Clock source Select the source with the multifunction control knob Clock edge Select the rising or falling edge of the clock Back Return to the previous menu level Alternate Trigger When alternate trigger is selected the trigger signal will be present in two vertical channels This triggering mode is suitable for observing two signals of unrelated signal frequencies The Alternate trigger menu can also be used to compare pulse widths 31 UNI To UT4000 User Manual Adjusting the Holdoff Time You can adjust the holdoff time to observe complicated waveforms e g pulse string series Holdoff time means the data acquisition cycle of the digital storage oscilloscope It is an exact multiple of the cycle of the complicated waveform being tested thus synchronization 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 below Table 2 13 Function Menu Setup Explanatory Note Window Press F1 to switch between main window and window extension Dual time base Time base mode Main time base or dual time base Channel For the selection of displaying CH1 or CH2 Time base graticule Selecting main time base M1 or delay time base M2 M2 shift Selecting fine tune or coarse tune shift Holdoff Adjust holdoff time with the multifunction con
21. noise of signals If the signal being measured is stacked with random noise you can adjust the setups of your oscilloscope to filter or reduce the noise so it will not cause interference to the signal during measurement Waveform is shown below ACQUIRE Acquisition Normal dem Length Normal Pog CH 1 20 0m Off MN 200us 8 000us MCH1 1 60mv Figure 3 4 Reducing random noise of signals Steps 1 Asin the previous illustration set the attenuation 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 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 signal quantities to pass through By setting low frequency suppression or high frequency suppression you can suppress low frequency or high frequency noise respectively and achieve a stable trigger
22. see a 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 Below is the trigger menu screen display as shown in Figure 2 16 F 162 TRIGGER aoe Type I Video s Table 2 11 Function Menu Setup Explanatory Note Type Slew rate Signal source CH 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 times AC Set grid trigger CH1 amp CH2 CH1 and CH2 trigger their respective signals alternately Trigger coupling DC Allow AC and DC quantities of the trigger signal to pass AC Intercept DC quantities of the trigger signal L F Suppression Reject low frequency quantities and allow only high frequency quantities to pass H F Suppression Reject high frequency quantities and allow only low frequency quantities to pass Trigger mode 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 30 UNI To Table 2 11 Con t UT4000 User Manual Trigger mode Normal Single The system stops acquiring data when there is no trigger signal When the trigger s
23. setups Figure 1 11 Trigger controls l 12 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 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 UNI To UT4000 User Manual _ TRIGGER Type Edge Source Coupling 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 A Press FORCE to generate a compulsory trigger signal that is mainly used in the normal and single trigger modes 13 UNI To UT4000 User Manual Chapter 2 Instrument Setups You should be familiar with basic operation of the vertical controls horizontal controls and trigger system menu of your UT4000 oscilloscope by now After reading the last chapter you should be able to use the menus to set up your digital storage oscilloscope If you are still unfamiliar with these basic operation
24. steps and methods please read Chapter l This chapter will guide you through the following Setting up the vertical system CH1 CH2 MATH REF OFF VERTICAL POSITION 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 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 UT4000 Series Oscilloscope 14 UNI To 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 explanatory notes please see Table 2 1 below UT4000 User Manual Table 2 1 Explanatory notes for channel menu Function Menu Setup Explanatory Note Coupling DC AC and DC quantities of input signal is allowed to pass AC DC quantities of the input signal are intercepted DC level of the channel input ter
25. the oscilloscope or an external USB device and are identified with the following names RefA RefB To display recall or hide off the reference waveforms take the following steps 1 Press the 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 repeating step 2 In actual application when using your UT4000 to measure and observe such waveforms you can compare the current waveform with the reference waveform for analysis Press REF to display the reference waveform menu For setup please refer to Table 2 5 4 To close the reference waveform press OFF in the vertical zone Note When AUTO is pressed after a reference waveform is recalled that waveform will remain 23 UNI To UT4000 User Manual Table 2 5 Selecting the storage position Function Menu Setup Explanatory Note Reference waveform REF A Select the REF A reference option REF RB Select the REF B reference option Recall Recall a waveform stored in any of the 10 with th
26. use the LA function connect the probe of the logic analyzer including connector interface box connecting cable for the test point being measured and needle and insert it into the LA interface at the rear of the oscilloscope 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 ei Voie 0 000us ECHI 40 00m Figure 2 29 Composite display of the logic analyzer and CH1 channel 50 UNI To Multimeter Measurement UT4000 User Manual Operation instructions Open the multimeter function menu Table 2 27 by pressing the DMM button Table 2 27 DMM Menu Function Menu Setup Explanatory Note DMM functions DMM functions ON OFF Measurement 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 Diode DC current Activate the diode measurement function Activate the DC current measurement function Current range 4mA 40mA 400mA 4A Window shift Set the horizontal shift or vertical shift of the window with the multifunction c
27. 1 As in the previous illustration set the attenuation factor of the probe and CH1 Carry out trigger setup Press MENU in the trigger control zone to display the trigger setup menu 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 Adjust horizontal time base and vertical range to an appropriate range Turn the TRIGGER LEVEL control knob to get the desired level Press RUN STOP and wait for a signal that meets the trigger condition If any signal reaches the set trigger level the system will sample once and display it on the screen By using this function you can easily acquire any occasional event For example when a sudden glitch of relatively big amplitude is acquired set the trigger level to just higher than the normal signal level Press RUN STOP and begin waiting When a glitch occurs the machine will automatically trigger and record the waveform 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 the glitch STOP E 10 0000kHz 200m W 10 0us 0 000us Mi CHI 16 00miy Figure 3 3 Single signal 54 UNI To UT4000 User Manual Illustration 4 Reducing random
28. A e En Probe e Invert CHI 500m orf MN 200us 0 000us CHI 40 00my Figure 2 7 Coarse tuning and fine tuning the vertical deflection factor 19 UNI To UT4000 User 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 Coupling ACING BY Limit FULL Yolts Div Coarse Probe 1X TRIG ED DEE en t 4 Invert CHI 500m r 200us 0 000us HCH 40 00m Non inverte OII VEITtCU Coupling AC IN BW Limit i FULL Yolts Div Coarse E ar Pores Probe 3 1X Figure 2 9 Inversion setup for vertical channel inversion inverted CHi 4500m H 200us 0 000us HCH 40 00mv Inverted waveform 20 UNI To UT4000 User Manual I Operating Math Functions Math functions are displays of x FFT mathematical results and digital filtering function of CH1 and CH2 waveforms The menu is as follows Source 1 CH1 NEE E A A ebeter Operator Source 2 CH 1 2 00VECH2 10 0 h 500us 0 000us HCH J20 00mv Math range Figure 2 10 Math functions Table 2 2 Explanatory notes for the Math menu Function Menu Setup Explanatory Note Type Math To carry out x functions Operand 1 CH1 Set operand 1 as CH1 waveform CH2 Set operand 1 as CH2 waveform Operator db Operand
29. F China Merchants Tower 161 Lujiazhui Dong Lu Pudong New District Shanghai Tel 86 21 5878 3888 Fax 86 21 5878 7888 Email infosh uni trend com cn Postal code 200 120 Manufacturer Uni Trend Technology Chengdu Limited Address 2 F Block D2 199 Xiqu Da Dao Gaoxin Xiqu Chengdu Sichuan Province China 88
30. Figure 5 7 Cancel upgrade 1 71 UNI To UT4000 User Manual 2 During the upgrade process you can cancel upgrade by pressing F1 To cancel upgrade and operate your oscilloscope normally follow the on screen instructions Remove the USB device and reboot Program Update System Welcome you are using USB Update program V3 2 Figure 5 8 Cancel upgrade 2 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 instructions Remove the USB device and reboot Program Update System Figure 5 9 Cancel upgrade 3 72 UNI To UT4000 User Manual 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 USB device has been removed Please reboot To resume normal operation power on the oscilloscope with the USB device unplugged Program Update System SS er ae UUU yu are using USB Update program 3 2 e to update F5 Yes Fl No No 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 Incorrect upgrade document Save a correct document on the USB device and re
31. File UTG 005 Date March 20 2009 Draft 1 This product conforms with safety product design requirements of UL and CE standards UT4000 Series Digital Storage Oscilloscope User Manual Introduction Dear valued user Thank you for purchasing a Uni Trend instrument To use your new product correctly read this User Manual carefully and completely before operation and pay particular attention to Safety Instructions Please keep this User Manual in a safe place after reading it carefully For easy reference during future operation we recommend putting it alongside your Uni Trend product or in an easily accessible place UNI To UT4000 User Manual Copyright Information e Uni Trend Technology Dongguan Limited All rights reserved e Products of the Company are protected by patents granted and pending in the People s Republic of China or other countries e The Company reserves the right to change product specifications and prices Uni T all rights reserved All licensed software products are properties of Uni Trend Technology Dongguan Limited and its subsidiaries or software providers They are protected by the national copyright law and international conventions Information contained in this manual supercedes all information in previously published versions Uni T is the registered trademark of Uni Trend Technology Dongguan Limited UNI To UT4000 User Manual If this product is sold or assigned by the
32. Hz 2GS s 1GS s 50GS s UT4202C 200MHz 2GS s 1GS s 50GS s UT4302C 300MHz 2GS s 1GS s 50GS s UNI To UT4000 User Manual UT4000 oscilloscopes offer a user friendly front panel 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 UT4000 series can fully satisfy your testing and measurement requirements e 2GS c real time sampling rate dual channel 1GS s single channel 2GS s and 50GS s equivalent sampling rate UT4152C UT4202C UT4302C e Dual time base function unrivaled waveform detail observation and analysis capabilities e 6k storage depth 60M equivalent storage depth 1024k recording length e 16 channel logic analyzer 3 2 digital multimeter e Unique envelop sampling feature with direct visual display of carrier wave details after amplitude modulation e Quick waveform acquisition and colour change function that visually describes the strength of waveform Scroll display in scan mode for continuous monitoring of signal variations HD colour LCD sy
33. Overshoot The ratio value of the difference between maximum value and top value to the amplitude value of the waveform Preshoot The ratio value of the difference between minimum value and base value to the amplitude value of the waveform Average value Average amplitude of signals within 1 cycle Root mean square value Vrms The effective value Energy generated by AC signal conversion during cycle with respect to the DC voltage that produces equivalent energy i e root mean square value Automatic measurement of time parameters Your UT4000 can automatically measure the frequency cycle rising time falling time positive pulse width negative pulse width delay 1 2 rising edge delay 1 2 falling edge positive duty ratio negative duty ratio and 10 time parameters Definitions of these parameters are as follows RiseTime The time taken by the waveform amplitude to rise from 10 to 90 FallTime The time taken by the waveform amplitude to fall from 90 to 10 Positive 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 Falling delay Fall Delayed time of the falling edge of CH1 CH2 Positive duty ratio Duty Ratio of positive pulse width to cycle Negative duty ratio Duty Ratio of negative pulse width to cycle 45
34. 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 83 UNI To UT4000 User Manual Index Numeral 50 button 13 Alphabet RT negen 28 CIR SE 28 EET r solution due 23 FFT frequency analysis 21 LEKT E SE 24 SY MOE Leen Ed 39 YoU MOdE nee iene ewan 39 Chinese General hehe tees 5 EE 73 RASC HIME Tee 45 Fall time oo ccc ccc cece cece cece eeeee eee eeeeeneeeeeeess 45 SYStEMUPLOMPtS ageet 65 Refresh E EE 38 Single trig oer sssrinin os andere EEN 33 Vertical System s2i 26 43603 4ec E 29029222820 EEN alee digs 15 Ee 33 AC QUISIHON EE 35 CUrSOr meas rement NNN NNN e 47 Display System 38 eut 13 Horizonital systeim 202 10 Maths un ction i e ESA AAA 21 Measurement 46 Reference Waveform 23 RUN STOP aere ebe Set 49 Storage EE EE 39 Trigger SYSteM 27 Functions gees dee edd 41 Vertical syste 220 15 REUT TO ZETO TENE SEN NENNEN 9 Select oda 50 84 UT4000 User Manual Coarse tune Nyquist frequency Technical indicators Waveform inversion Waveform recording Pulse trigger Video trigger Cleaning ebe Top value SAVE seg Warranty eee eee Operand
35. Table 2 18 Bitmap storage menu Function Menu Setup Explanatory Note Bitmap Export the display data to the USB device in bmp format Export Document name Default name of the file being exported to the USB device is UNI T0000 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 Setting up Utility Functions As shown below the UTILITY button in the control zone is the function key for alternative functions Tu fcr H Loss om se 3 omm crose cursor fospuy Tomm T wm 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 41 UT4000 User Manual Table 2 19 Utility functions menu 1 UNI To Function Menu Setup Explanatory Note System configuration Auto calibration Run auto system calibration System information Display information like oscilloscope Clear information software and hardware versions Clear all saved reference waveforms and front panel status setups RTC setup Set time and date Factory setup Recall factory setup In
36. The best amplitude Mainly for single frequency signals to recognition rate and the search for higher order harmonic wave poorest frequency recognition rate 22 UNI To UT4000 User Manual 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 Digital Filtering Function Function Menu Setup Explanatory Note Type Digital filtering Digital filtering Signal source CH1 Set CH1 as filter target CH2 Set CH2 as filter target REF A Set REF A as filter target REF B Set REF B as filter target Filtering Type Low pass Set the filter to low pass filtering High pass Get the filter to high pass filtering Band pass Set the filter to band pass filtering Minimum Set the minimum frequency with the multifunction Frequency control knob Maximum Set the maximum frequency with the multifunction Frequency control knob II 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
37. al 3 The measurement voltage amplitude value is 10 times larger or smaller than the actual value Check if the channel attenuation factor corresponds with the probe attenuation you have 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 Check the trigger type Use edge trigger for ordinary signals and video trigger for video signals Stable waveform display is achieved only when the correct trigger mode is selected Try changing the coupling display to high frequency suppression or low frequency suppression to filter any high or low frequency noise that is interfering with triggering 5 No display after pressing RUN STOP Check if the trigger mode is set to normal or single in the menu and whether the level exceeds the waveform range If so move the level to the centre or set trigger mode to AUTO Press AUTO to complete the setup 6 Display speed is slower after average sampling time is enabled Ifaverage sampling is carried out for more than 32 times the display speed will drop This is normal You can reduce the intervals of average sampling Sa Trapezoidal waveform display This is normal The reason is possibly horizontal time base range is too low You can improve horizontal pixel aspect ratio and enhance the display quality by increasing the horizontal time base I
38. an automatically measure most display signals To measure signal frequency and peak to peak value follow the steps below Press MEASURE to display the automatic measurement 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 Le OOO MEASURE All ta Select CEA Dit 4 Indicators rash Close Clear CH1 200m h 200ms O 000us HCH 16 00m Figure 3 1 Automatic measurement 52 UNI To UT4000 User Manual 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 OO Press AUTO Continue to adjust the horizontal and vertical range until you get the desired waveform display Press CH1 to select CH1 Adjust vertical position of the CH1 waveform by turning the vertical position control knob Press CH2 to select CH2 In the same way de
39. be delivered any other destination all freight custom duty tax and other costs will be paid by the customer This warranty does not apply to any defect malfunction or damage caused by accident normal wear and tear of mechanical parts any form of application other than the stated ones improper use improper maintenance or poor maintenance Under the warranty terms and conditions Uni T has no obligation to provide the following services a Repairing any damage arising from installation repair or maintenance carried out by a non Uni T service representative b Repairing any damage arising from improper use or connection to incompatible equipment c Repairing any damage or malfunction arising from using a power source not provided by Uni T d Servicing a product that has been modified or integrated with other products such modification or integration makes repair more time consuming and difficult This warranty is made available to this product specifically and supercedes all other previous warranties whether express or implied Uni T and its dealers will not make any implied guarantee on the salability or suitability of this product for any specific purpose In the event of breach of warranty terms and conditions repair or replacement of defective product shall be the only and all remedial measure offered by Uni T Notwithstanding any prior notification of potential damage that is indirect special consequential or inevitable Un
40. 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 professional to carry out inspection Maintain good ventilation Do not operate in humid condition UNI To UT4000 User Manual Do not operate in combustible and explosive conditions Keep the product surface clean and dry Safety Messages and Symbols Safety terminology used in this manual The following messages may appear in this manual Warning Warning statements identify conditions or practices that could result in injury or loss of life Caution Caution statements identify conditions or practices that could result in damage to this unit or other properties Messages on the product The following messages may appear on the product Danger means potential damage that is immediate Warning means potential damage that is not immediate Caution means possible damage to this product or other properties Symbols on the product The following symbols may appear on the product 2 CN A A GK we High
41. e multifunction control knob then press SELECT to confirm Import Recall a reference waveform stored on the USB device To select an internal storage position 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 corresponding file name To save a reference waveform on the USB device see the STORAGE menu Setting Up the Horizontal System Horizontal Control 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 Press F1 to switch between main window and window extension Dual time base Time base mode Main time base or dual time base Channel Select the channel to be displayed CH1 or CH2 Time base graticule 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 4 POSITION b f Eo MENU Figure 2 11 Horizontal system control interface 24 UNI To UT4000 User Manual Definitions of Horizontal Parameter Icons The signal frequency currently selected a
42. e are displayed In the envelop mode peak detection is carried out for every single acquisition 36 UNI To Setting Up the Display System UT4000 User Manual As shown below the DISPLAY button in the control zone is the function key for the display system Tu fener O Las on oe EY omm Tome cursor osp mum Casto 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 Table 2 15 Display menu Function Menu Setup Explanatory Note Type YT Operating mode of the oscilloscope XY X Y is the display mode CH1 is X input CH2 is Y input Format Vector Sampling points are linked for display Dot Sampling points are directly displayed Grid Full Grid Set the grid display mode of the waveform Crosshair zone to full grid crosshair or frame Frame Duration Auto Waveform on the screen is refreshed at normal rate Is 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 multifunc
43. e meets specifications it must first meet the following conditions WR The oscilloscope must have been operating continuously for thirty minutes within the specified operating temperature WR If the operating temperature changes by more than 5 C you must perform the Self Cal operation accessible through the System Functions menu All specifications are guaranteed unless noted Typical Technical Indicators Acquisition Acquisition modes Real time Equivalent Acquisition rates 2GS s 50GS s UT4302C UT4202C UT4152C 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 IMQ 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 76 UNI To UT4000 User Manual Horizontal Waveform interpolation Sin x x Storage depth 24K Max Equivalent storage depth 60M dual time base Recording length 1024K Scanning range s div Ins 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 gt 1ms Time interval AT
44. ect 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 LA DM Function Enable hode Current IERT EE EE og Win shift Vertical Current DC4A M 10 0us 0 000us CH ALL LINE Figure 3 17 Selecting a large range for measurement DNN Function Enable Mode Current Win shift Vertical Current CHI 200m Daat H 200us 800 000ns T S 240n Figure 3 18 Selecting a suitable range for measurement 65 UNI To UT4000 User Manual Chapter 4 System Prompts and Trouble shooting Definitions of System Prompts Adjustment at Ultimate Limit This informs you that the multifunction control knob has reached its adjustment limit in the current status No further adjust is possible When the vertical deflection factor 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 o
45. eeeeenes 54 Recall p ugadundaadedoudsadevasuesnarecreereeucnsdesdeedandeudaduawit 39 Range adjustment 2NS RS NENNEN ENEE RER EE AEN EA 19 Delayed measurement oo eee eee e cece eee E a aa aa aaiae 45 Channel Setup EE 17 Channel coupling 16 PECUIO OGL eege 34 Reducing signal random noise ce cece cece eee eee eee eneees 55 Probe compensation ccc cece cece ence en ee nnee e ora 8 Probe attenuation rate eee ce cece eee eee eee sent enaeeeaes 18 GELEET ged 34 Coarse tune fin CN 19 Utility functions ardir nnen nen ea wae ALAS 41 Maximum ANEN nae paced eee eae T E ee 45 Minima e eri eig EEEE EEEE E EE E EEEE EEEE EEEa 45 Equivalent sampling c ccceecceeeeeeeeeeteeeseesaeeeeens 75 Contact US een 74 Math functions 2 0 00 ee aa n eee e eee e ence nee aE EEEE EEEE EEEE EES 21 Mrngger level 31408 12 doter EE 12 Beer stesso ae eae ELLE LEE La ae ne 12 HOldOfE tee 32 Trigger coupling ee teeieieeiecceiiee LE SEE HENSEN 12 Input channel 5 0 c e aioe errete Ee E eee esses cote e 33 Interface d sion ge 42 Overshoot ele 45 PIESHOOL gt veau 45 MS ett ee EEN 45 Amplitude gege 45 Positive duty rato ENEE 45 Negative duty ratio oo ccc cece cece cece eee e eee eneeeaeneeenes 45 86 UNI To UT4000 User Manual This user manual may be revised without prior notice 87 UNI To UT4000 User Manual Uni Trend Electronic Shanghai Limited Address Room 15 11
46. els D8 D15 In the LA menu you can press F5 to automatically arrange the channels on display in sequence 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 CH 500m h Give odus concurrently with the analog channel Function Enable LA Setup EE sretererttl Threshold ais HIH S 40 00mit Figure 3 16 Composite display of the logic analyzer and CH1 UNI To UT4000 User 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 measurement parameter DC current Press F5 then F4 to set current range to 4A Conn
47. er than less than or equal to negative pulse Pulse width range 20ns 10s Video Trigger Trigger sensitivity video Internal 2 div peak to peak trigger typical EXT 400mV EXT 5 2V 79 UNI To UT4000 User Manual Signal format and line field frequency Supports standard NTSC and PAL 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 Cursor Manual mode Voltage difference AV between cursors time difference AT between cursors AT countdown Hz 1 AT Tracking mode Voltage and time of waveform dots Automatic Allows cursor display during automatic measurement 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 7 X 10 groups and 10 setups FFT Window Hanning Hamming Blackman Rectangle Acquisition points 1024 points Lissajous Figure Phase difference 3 degrees 80 UT4000 User Manual General Specifications
48. following steps OD Connect the probe of the digital storage oscilloscope to the CH1 input and set the attenuation switch of the probe to 10X Figure 1 5 Figure 1 5 Setting the attenuation switch UNI To UT4000 User Manual 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 CH1 Coupling AC INS BY Limit FULL Volts Div Coarse Probe N Probe ration Figure 1 6 Setting the probe deflection factor of the oscilloscope 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 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 Coupling ACINQ BW Limit FULL Yolts Diy TRIG ED Coarse oo Probe CH1 500m MN 500us 0 000us HCH 20 00my Figure 1 7 Probe compensation signal UNI To UT4000 User Manual 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
49. ft horizontal shift and holdoff to the zero position center point UNI To UT4000 User Manual 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 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 4 POSITION gt Las Menu Figure 1 10 Horizontal controls 10 UNI To 11 UT4000 User Manual 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 UT4102C in steps of 1 2 5 Note Minimum time base range of the UT4000 Series varies from model to model Use the horizontal POSITION knob to adjust the horizontal position of the signal in the waveform window
50. fthe display type is vector the connection between sampling dots may cause a trapezoidal waveform Set the display type to dot to solve this problem 67 UNI To UT4000 User Manual Chapter 5 Service and Support Warranty UT4000 Series Digital Storage Oscilloscopes 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 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 corresp
51. g satisfactorily 2 Check the accessories A checklist of accessories that come with your UT4000 oscilloscope is provided in the section UT4000 Accessories of this user 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 operating 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 UNI To UT4000 User Manual UTILITY button Power ON OFF button Figure 1 4 Warning To avoid danger ensure the digital storage oscilloscope is safely grounded 2 Accessing signals Your UT4000 oscilloscope has dual input channels and one external trigger input channel Please access signals in the
52. he control zone is the function key for the sampling system Tu Ion H Loss om se 3 omm Loge cursor fospuy Tun auto Figure 2 18 Function key for the sampling system 34 UNI To UT4000 User Manual Press the ACQUIRE button to pop up the sampling setup menu You can use this menu to adjust the sampling mode Table 2 14 Sampling menu Function Menu Setup Explanatory Note Acquisition mode Normal sampling Turn on the ordinary sampling mode Peak detect 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 Average number of 2 256 Set the average number of times in multiples times when average sampling is selected of 2 i e 2 4 8 16 32 64 128 256 To change the average number of times use the multifunction control knob shown in Figure 2 18 Storage depth Standard storage DSO storage Long storage USB drive storage long storage is disabled when the logic analyzer is on and dual time base is in operation Quick acquisition On Off Acquire at a high screen refresh rate for more realistic reflection of waveform status Close the quick acquisition function 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 w
53. hen average sampling is not selected and when 32 time average sampling is selected For sampling waveform display please see Figure 2 19 and Figure 2 20 CH 1 500m ACQUIRE Acquisition Normal em Length H Normal Fast ACH Off W 50 0ns 142 000ns ECHI 20 00mv Figure 2 19 Waveform without average sampling 35 UNI To UT4000 User Manual JTRIGED ACQUIRE Acquisition Average Averages em Length Normal Fast ACQ Off W 50 0ns 142 000ns CHI 20 00mY 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 intervals 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 average value to display the final waveform You can use this mode to reduce random noise Envelop mode Waveforms of different amplitudes are acquired Sampling points of all relative triggering points recorded at the same time are calculated and the maximum value and minimum valu
54. hen press CLOSE to exit AP aN The peak to peak value is displayed in the left bottom corner 44 UNI To UT4000 User Manual Example 2 Setup for delayed measurement You can use the delayed measurement function to measure the time interval between the rising edge of two signal source i e the time interval between the rising edge of the first cycle of a certain signal source and the rising edge of the first cycle of another signal source Measure as follows 1 As shown in the previous example select rising delay in the measurement parameters menu 2 Press SELECT to display the rising delay parameter 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 UT4000 can automatically measure the following voltage parameters Peak to peak value Vpp The voltage value from the highest point to lowest point of the waveform Maximum value Vmax The voltage value from the highest point to ground GND of 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 amplitude Top value Vtop The voltage value from the level top to ground GND of the waveform Base value Vbase The voltage value from the level base to ground GND of the waveform
55. i T and its dealers shall bear no liability for any such damage UNI To UT4000 User 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 standards It fully meets CAT II 600V insulation and overvoltage 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 User 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 oscilloscope The probe ground cable is the same as ground potential Do not connect the ground cable to high voltage Check the rated values of all terminals To prevent fire and excessive current shock please check all rated values and label
56. ignal is generated trigger scan occurs One trigger will occur when there is an input trigger signal Then trigger will stop Slew rate setup Slew rate type Slew rate of the slew condition Rise fall setup Set slew rate to larger _than smaller than equalling to with the multifunction control knob on the front panel Threshold Low level high level High low level setup Return Return to the previous menu LA Trigger First enable the LA function then select LA trigger Trigger menu is as follows Table 2 12 Function Menu Setup Explanatory Note Type LA Select LA trigger as the trigger type Sub type Pattern Select pattern or duration as the sub type Duration Trigger qualifier Turn the multifunction control knob and SELECT key to set the high and low levels for each of the 16 width values Trigger mode 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 Normal The system stops acquiring data when there is no trigger signal When the trigger signal is generated trigger scan occurs Single One trigger will occur when there is an input trigger signal Then trigger will stop Duration setup Condition Select above below or equivalent Time setup Set a duration that satisfies the condition with the
57. ignals alternately Set one of the channels between D0 D15 as the signal D0 D15 source trigger signal the LA function must be enabled Trigger coupling DC Allow AC and DC quantities of the input signal to pass AC Intercept DC quantities of the input signal L F Suppression Reject low frequency quantities below 80kHz of the signal H F Suppression Reject high frequency quantities above 80kHz of the signal 28 UNI To UT4000 User Manual Table 2 8 Con t Function Menu Setup Explanatory Note Trigger mode 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 Normal The system stops acquiring data when there is no trigger signal When the trigger signal is generated trigger scan occurs Single One trigger will occur when there is an input trigger signal Then trigger will stop Pulse width setup See Table 2 9 Set the pulse width Table 2 9 Pulse width setup Pulse width Positive Set the positive pulse width as the trigger signal polarity Negative Set the negative pulse width as the trigger signal Pulse width lt Trigger occurs when pulse width is smaller than the set condition value gt Trigger occurs when pulse width is larger than the set value Trigger occurs when pulse width equals to the set value Pu
58. ing 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 J 120 00m Figure 3 10 Stop condition not satisfied CH1 1 00 MN 200us 0 000us ECHI E 120 00m Figure 3 11 Stop condition satisfied 61 UNI To UT4000 User Manual 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 tones ACQUIRE Acquisition Normal Mem Length Normal Fast ACQ Figure 3 12 Quick acquisition OFF ACQUIRE 4 Acquisition d lem Length Normal Fast ACO On M n 0 000us MCH2 J 240n Figure 3 13 Quick acquisition ON Illustration 10 Using the dual time base 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 trigger instructions in Illustration 7 Video signal triggering 2 Press MENU in the horizontal control 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
59. knob to select triggering on any line 7 Turn the horizontal SEC DIV knob in the horizontal control zone to adjust horizontal time base for a clear waveform display VIDEO SETUP Standard PAL Syne Line Num P Line Num CHI 1 00 pack MN 2000s 0 000us m CH1 LINE 25 Figure 3 9 Video line triggering 60 UNI To UT4000 User 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 m 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 enter 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 check
60. larger than 1 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 autoset process until you get the optimal waveform display UNI To UT4000 User Manual 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 reset vertical shi
61. lse width time Set pulse width to 20ns 10s with the multifunction control knob on the front panel Return Return to Table 2 8 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 setup Function Menu Setup Explanatory Note Type Video Trigger source CHI Set CH1 as the trigger signal CH2 Set CH2 as the trigger signal EXT Set the external trigger input channel as the trigger signal EXT 5 Attenuate the external trigger source 5 times as the trigger signal AC Set grid as the trigger signal CH1 amp CH2 Set CH1 and CH2 as alternate trigger signals Video setup See Table 2 10a Table 2 10a Video setup Standard trigger PAL Suitable for PAL video signals NTSC Suitable for NTSC video signals Synchronization Odd field Set the video odd field to synchronized trigger Even field Set the video even field to synchronized trigger All lines Set the line signal to synchronize with trigger Specified lines Set synchronized trigger on the specified line and adjust by turning the multifunction control knob on the upper front panel Return a Return to Table 2 10 29 UT4000 User Manual UNI To 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
62. ly UT4000 User Manual LINI T tg 200MHz2GSis aro TRIGGER LEVEL ne zen MENU so Figure 1 1 Front panel of UT4000 Oscilloscopes UNI To UT4000 User Manual Multifunction Frequently Operation control knob used menus control DESCH 74000 e zen DIGITAL STORAGE OSILLOSCOPE Trigger control Horizontal control Vertical control Probe compensation Power switch USB Host Multimeter Signal input External signal input interface input port trigger input Figure 1 2 Schematic diagram for operating the UT4000 front panel UNI To UT4000 User Manual Horizontal trigger position Trigger Frequency of the status display triggered signal TRIG ED i i CHI Coupling AC INS ER OT en RE The menu may Channel 1 ARE om Vary with vertical fae individual reference function keys Coarse ag Waveform robe S display D window Invert CH 1 00m Off MN Zus 0 000us HIH 20 On Hain time Display channel Trigger level value base setup vertical range Figure 1 3 Schematic diagram for the display interface UNI To UT4000 User Manual General Inspection We suggest checking your new UT4000 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 found the product and accessories performin
63. minal upon Ground equivalent grounding is displayed Bandwidth limit Full bandwidth Full bandwidth 20MHz Limit bandwidth to 20MHz to reduce noise display VOLTS DIV Coarse tune Coarse tune in steps of 1 2 5 to set up the Fine tune deflection factor of the vertical system Fine tune means further tuning within the coarse tune setup range to improve the vertical pixel aspect ratio Probe 1X Select one of the values based on the probe 10X attenuation factor to keep the vertical deflection 100X factor reading correct There are four values 1000X 1X 10X 100X and 1000X Invert On Waveform invert function on Off Normal waveform display 15 UNI To UT4000 User 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 waveform display is as follows TRIG ED AC coupling setup BW Limit FULL LE Volts Div T Coarse r 3 d Invert oft MN 200us 0 000us CHI A 20 00my gt Figure 2 1 DC quantities of the signal are intercepted Press F1 twice to select DC Both DC and AC quantities of the testing signal being inputted to CH1 can pass through The waveform display is as follows TRIG ED Coupling DC coupling setup BY Limit FULL M 200us 0 000us CHI 40 00m Fig
64. on 1 10 With the multifunction control knob set and select the position in which the reference waveform is to be stored in the built in memory Export Document name Document format OK Select the default name UNI T0000 for the reference waveform file being exported to the USB device with the multifunction control knob Set the format as internal or CSV Export the reference waveform to the USB device 2 Select setup to enter the setup storage menu See Table 2 17 Table 2 17 Storage menu setup Function Menu Setup Explanatory Note Setup 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 Call back Recall the saved setup status Import Document name Name the reference waveform file being imported from the USB device with the multifunction control knob OK If the document exists on the USB device it will be imported Otherwise the system will indicate I O operation failure Export Document name Name the reference waveform file being OK exported to the USB device with the multifunction control knob The current front panel setup status is exported 40 UNI To UT4000 User Manual 3 Select bitmap to enter the bitmap storage menu See Table 2 18 Note This function can be recalled and used only when the USB device is inserted
65. onds with the model and hardware version of this oscilloscope i e the update document is available for download 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 below will appear on the screen Program Update System Sg Np ae el l Welcome you are using USB Update program Y3 2 Figure 5 1 USB upgrade confirmation 68 UNI To UT4000 User Manual 3 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 Datetime 24 10 37 08 12 27 15 09 Move Select bh Aetion F1 Cancel F5 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 you wish to update If yes press F5 otherwise press F1 to cancel upgrade Program Update System u are usi itting for re Figure 5 3 Confirming the USB upgrade document 69 UNI To UT4000 User Manual 5 When the USB document is confirmed the following prompt will appear
66. only have to press the Run button once and the oscilloscope will wait for trigger One sampling will occur and the acquired waveform will be displayed when the digital storage oscilloscope detects a trigger Then trigger will stop Trigger coupling Trigger coupling determines which quantities of the signal are transmitted to the trigger circuit Coupling modes are DC AC low frequency suppression and high frequency suppression DC Allowing all quantities to pass AC Intercepting DC quantities and attenuating signals under 10Hz Low Frequency Suppression Intercepting DC quantities and attenuating low frequency quantities under 80kHz UNI To UT4000 User Manual 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 horizontal 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 Observation and analysis of pretrigger data can help you identify the cause of glitch Setting Up the Sampling System As shown below ACQUIRE button in t
67. ontrol 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 appropriate 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 51 UNI To UT4000 User 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 In the 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 measured Press AUTO The oscilloscope will carry out auto setup to optimise waveform display In this status you can further adjust the vertical and horizontal range until you get the desired waveform display Voltage and time parameters for automatic measurement Your oscilloscope c
68. or 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 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 Set time as the measurement parameter Voltage Set voltage as the measurement parameter Close Close the automatic measurement function Mode Independent Adjust the difference between two cursors with the multifunction control knob Tracking Adjust the difference between two cursors with the multifunction control knob or fix the difference and adjust the cursor positions Vertical cursor Second Select time as the measurement parameter Hz Select frequency as the measurement parameter 47 UNI To UT4000 User Manual Using the Run Button There is a RUN STOP button on the top right corner of the front panel When this button is pressed and a green indicator lights
69. original purchaser to a third party within three years of purchase the new owner should note that warranty is available for a period of three years from the day the original purchaser acquired the product from Uni T or an authorized dealer The probe other accessories and fuses are not covered by warranty If any genuine defect is found during the valid warranty period Uni T has the option to repair the defective product without any charge for parts or labor or replace it with another product to be decided by Uni T For warranty purposes Uni T may use parts modules and replacement products that are brand new or repaired to a good as new standard All old parts modules and products that are removed during replacement become properties of Uni T In this User Manual customer means an individual or entity vested with the rights hereunder To enjoy the warranty service the customer must report any defect to Uni T during the valid warranty period and make appropriate arrangement to allow servicing The customer should pack the defective product in a container and deliver it to a maintenance centre specified by Uni T The customer should also prepay all freight cost and provide a copy of the original sales receipt issued to the original purchaser If the product is to be delivered to an address within the country where the maintenance centre operates Uni T shall pay the cost of returning the product to the customer If the product is to
70. peat the previous steps for upgrade Program Update System DEE LANE IPN IS l are u LU V3 2 Figure 5 11 Incorrect upgrade document 73 UNI To UT4000 User Manual Failure in reading upgrade document After selecting the upgrade document press F5 to read If the document cannot be read you will see the prompt Sorry upgrade has failed Please contact our after sales service department It may be that our oscilloscope does not support your USB device or document reading is unsuccessful due to other reasons You can retry and see if the problem can be solved or use a USB device we recommend If the problem persists contact our after sales service department To resume normal operation power off your oscilloscope and then reboot Program Update System Figure 5 12 Reading failure Low software version If the version of USB document is lower than that of the oscilloscope upgrade will fail You will be prompted that Software version too low Please read the user manual for further instructions This indicates that the software version you have saved on to the USB device is lower than the existing one on the oscilloscope You should acquire the correct version either online or through our after sales service department To see version information press UTILITY SYSTEM CONFIGURATION SYSTEM INFORMATION Please download the suitable upgrade document Program Update System Figure 5 13 Lo
71. s the trigger source Position of the current waveform triggering point Trigger level of the current waveform The distance between the triggering position and the horizontal centre point time Time base of the main time base M1 i e SEC DIV OOBOOO 1274 Coupling AC IN BW Limit 20M Volts Div Coarse f Probe 1X Invert ERT Bw500m Off N Adn 0 000us HOH 20 00mY Ak Figure 2 12 Definitions of horizontal parameter icons 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 At Gre Briele reine Ge Extended window oppe ECHI 80 00my The horizontallv 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 waveform area to be magnified by turning the horizontal POSITION knob and SEC DIV knob 25 UNI To UT4000 User Manual Dual Time Base Function The dual time base function is similar to window extension but there is a fundamental difference In the extension 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
72. scilloscope is saving a waveform this prompt is shown on the screen A progress bar appears at the bottom Waiting This prompt appears on the screen during auto calibration A progress bar appears at the bottom VO 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 Ifthe screen of your oscilloscope remains black without any display after powering on follow the steps below to find the cause 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 Ifthe unit still fails to power on contact UNI T to request service 2 If no waveform is displayed after you have acquired a signal follow the steps below to find the cause Check whether the probe is properly connected to the signal lead Check whether the signal lead is properly connected to the BNC channel adaptor Check whether the probe is connected properly to the object for measurement Check whether the object for measurement is generating signals connect the channel with signals to the questionable channel to find the cause Restart the acquisition process 66 UNI To UT4000 User Manu
73. scribed above adjust vertical position of the CH2 waveform so that the waveforms of CH1 and CH2 do not overlap This will make observation easier 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 measurement 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 MEASURE All H Select pe Indicators Close Clear 45 00us CH 1 SO0O0myECH2 500m MN 200ms 0 000us CH 16 00mv Figure 3 2 Waveform delay 53 UNI To UT4000 User 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 knowledge of that signal to set the trigger level and trigger edge For example if the pulse is a logical signal of TTL level the trigger level should be set at about 2V and the trigger edge should be set to rising edge trigger If you are not certain about the signal you can observe it by automatic or normal trigger to determine the trigger level and trigger edge Steps 1 A o GO CH
74. se 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 within the 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 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 Trigger mode To cause the digital storage oscilloscope to generate a trigger signal This oscilloscope offers three trigger modes for selection auto normal and single 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 50ms div or slower the Auto mode is a continuous 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
75. stem at 320 x 240 pixel aspect ratio Unique XY mode that displays the waveform and Lissajous figure concurrently USB drive system software upgrade Supports plug and play USB storage devices and capable of communicating with a computer through the USB storage device Automatic waveform and status configuration Storage of waveforms setup and bit map waveforms and setups reproduction Automatic measurement of 27 waveform parameters parameters testing and customization Automatic cursor tracing measurement Unique wave recording and replay function Built in FFT Multiple waveform mathematics functions including add subtract multiply and divide Edge video pulse width slew rate and alternate trigger functions e Visual system help messages UT4000 accessories e 2 x 1 5m 1 1 10 1 probe For details refer to the probe instructions These accessories conform with EN61010 031 2002 standards Power line conforming to international standards applicable in the country of use User Manual Product Warranty Card USB connecting cable UT D04 UT4000 communication control software USB DEVICE 2 x multimeter pen 2 x current to voltage converter module UT M03 UT M04 UT4000 logic analyzer probe including clamps and cable flex cable UT P06 UNI To Item General Safety Rules Preface Chapter 1 Chapter 2 Chapter 3 User Guide General Inspection Functional Check Probe Compensation Automatic Setups for Waveform Displa
76. t Function Menu Setup Explanatory Note DO D15 Set one of the channels between DO D15 as the signal source trigger signal the LA function must be enabled Trigger coupling DC Allow AC and DC quantities of the input signal to pass AC Intercept DC quantities of the input signal L F Suppression Reject low frequency quantities below 80kHz of the signal H F Suppression Reject high frequency quantities above 80kHz of the signal Trigger mode 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 Edge type 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 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 Trigger 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 AC Set grid trigger CH1 amp CH2 ICH and CH2 trigger their respective s
77. t 20MHZ Volts Div ai Coarse Probe 1X Invert Off M Wie 0 000us ECHI 20 00et Bandwidth limit icon Figure 2 5 Waveform display when bandwidth limit is on 3 Setting up the probe rate To match the probe attenuation factor setup it is necessary to set up the probe attenuation factor in the channel operation menu accordingly For example when the probe attenuation factor is 10 1 set the probe attenuation factor at 10X in the menu Apply this principle to other values to ensure the voltage reading is correct The figure below shows the setup and vertical range display when the probe is set at 10 1 TRIG ED Coupling AC IN BY Limit FULL Yolts Div Coarse Lett alc P tte Probe attenuation factor at Vertical range movement Figure 2 6 Setting up the probe attenuation factor in the channel menu 18 UNI To UT4000 User Manual 4 Vertical VOLTS DIV adjustment setup You can adjust the VOLTS DIV range of the vertical deflection factor either in the coarse tune mode or fine tune mode In coarse tune mode the VOLTS DIV range is ImV 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 TRIG ED ee LE Re OO d COLO OPAN IA zl A Uer Limit E hare hs dt
78. t peak To measure the Sinc frequency of the signal rising edge follow the steps below Press CURSOR to display the cursor measurement 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 See the figure below Oe ga eg Note When using the cursor to measure voltage follow step 3 only and set the cursor type to voltage 56 UT4000 User Manual Mode Independent ef v Units Hz 0 000us g CHI 0 00mi k Figure 3 6 Frequency of the cursor measurement signal Illustration 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 oscilloscope to the circuit and monitor the input and output signals To check the circuit s 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 the CH1 probe to the input terminal of the network Connect the CH2 probe to the output terminal of the network 3 Ifthe channel is not displayed press the CH1 and CH2 menu button to enable the two channels 4
79. terface setup Language Select one of the languages Interface style Classe traditional modern Menu display Set the waiting time for automatic menu shutoff 5s 10s 20s and manual Grid brightness Adjust the brightness of the waveform style zone with the multifunction control knob Pass check Allow testing 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 Table 2 19 Utility functions menu 2 Function Menu Setup Explanatory Note Signal source Display message Run Stop setup Template setup Designate testing type as CH1 or CH2 Open or close the test result Run or stop the PASS FAIL test Set the stop testing conditions 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 Setup Explanatory Note Frequency counter On Turn the frequency counter on Off Turn the frequency counter off Next page 2 2 Return to the previous menu 42 UNI To UT4000 User Manual Table 2 21 Waveform recording menu Function Menu Setup Explanatory Note E F4 Stop recording gt F3 1 Playback but
80. tion control knob 37 UNI To UT4000 User Manual 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 ARMED CH 1 SO0m ACH 500m W 20 0ms 0 000us E CHI 20 00mv Figure 2 22 Waveform display in X Y mode 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 38 UNI To UT4000 User Manual Definitions Y T Mode In this mode the Y axis indicates voltage and the X axis indicates time X Y Mode In this mode the X axis indicates CH1 voltage and the Y axis indicates CH2 voltage Slow Scanning Mode When horizontal time base control is set at 50ms div or slo
81. ton 2 When you press this button the system plays back and displays the number of the rewinding screen in the top centre area By turning the multifunction 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 F4 to stop and then press F3 4 You can record as many as 100 screens data If AUTO is pressed after a waveform is recorded it will be deleted F5 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 selectively when necessary To make calibration more accurate 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 UT4000 can be operated in many languages To select a display language press the UTILITY menu button and then LANGUAGE in Interface setup to choose your desired language 43 UNI To UT4000 User Manual Automatic Measurement As shown below
82. trol knob Trigger nosition erertrerebererprdrepetertrerspeterprdiepetertierebereitrers CH1 500m H10 0us_30 000us Ont 660 00mv Figure 2 17 Use the holdoff function to synchronize complicated waveforms Operation 1 Follow the normal signal synchronization procedure 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 communication signal it is easier to observe if the holdoff time is slightly shorter than the starting edge time of every datum 32 UNI To UT4000 User Manual Definitions l 2s a 33 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 u
83. 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 Tu fener O Las on oe EY Tom Tage cursor fose Jon Tam 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 Table 2 24 Auto setup Function Menu Setup Acquisition mode Adjust to sampling or peak detect Display format 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 amplitude of the signal 48 UNI To UT4000 User Manual RUN STOP Acquire waveform continuously or stop acquisition If you want the oscilloscope to acquire waveform continuously press RUN STOP once Press the button again to stop acquisition You can use this button to switch between acquiring and stop acquiring
84. ure 2 2 Both DC and AC quantities of the signal are displayed 16 UNI To UT4000 User Manual 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 CH1 Coupling Ground coupling setup BY Limit FULL Volts Div Coarse Probe 1X gt d Invert re W S tus 0 000us HCH 40 00m Figure 2 3 Screen display for the ground 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 CH1 Coupling AC BY Limit DE WEEN EE SERS SCPC T A Vo Full bandwidth erens rekert a0 Ge bees ehe A volts Div i T TID GEET GE E oe Coarse _ _ yep ee a SOE ee ME ONE SE EE Invert off MN 100ns 0 000us CHI 120 00nv Figure 2 4 Waveform display at full bandwidth 17 UNI To UT4000 User 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 DEE en AC IN BY Limit ED Bandwidth limi
85. voltage Caution Refer to manual Protective ground terminal rH Ground terminal for chassis Ground terminal for testing UNI To UT4000 User Manual Preface This manual provides information on the operation of the UT4000 digital storage oscilloscope series Guidance is given in several chapters as follows Chapter 1 User Guide Simple guide to oscilloscope functions and installation Chapter 2 Instrument Setups Guide to operation of the UT4000 digital storage oscilloscope series Chapter 3 Practical Illustrations Example illustrations are provided to solve various testing problems Chapter 4 System Prompts and Trouble shooting Chapter 5 Servicing and Support Chapter 6 Appendixes Appendix A Technical Indicators Appendix B Accessories for UT4000 Oscilloscopes Appendix C Maintenance and Cleaning UNI To UT4000 User Manual UT4000 Introduction UT4000 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 Rate UT4042C 40MHz 2GS s 1GS s UT4062C 60MHz 2GS s 1GS s UT4082C 80MHz 2GS s 1GS s UT4102C 100MHz 2GS s 1GS s UT4152C 150M
86. w software version 74 UNI To UT4000 User Manual 7 Software document incompatible with product model If the USB upgrade document is incompatible with the oscilloscope model upgrade will fail You will be prompted that Software and product model incompatible Please read the user manual for further instructions You should download an upgrade document which corresponds with your oscilloscope model e g UT4102C then repeat the USB upgrade steps Program Update System Figure 5 14 Incompatible software 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 cn For product support outside China contact your local UNI T supplier or sales centre Service Support Many UNI T products offer optional plans of extended warranty period or calibration period For details please contact your local UNI T supplier or sales centre A list of service centres worldwide is available online at http www uni trend com cn 75 UNI To UT4000 User 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 UT4000 Series Digital Oscilloscopes To verify that your oscilloscop
87. waveform In the Run mode a green light comes on and AUTO appears on the screen In the STOP mode a red light comes on and STOP appears on the screen Menu Display ON OFF To display or hide the current menu With the menu ON OFF key you can display or hide the menu currently on screen When the menu is hidden a vertical yellow band will appear on the right side of the screen Logic Analyzer LA Measurement There are 16 LA channels Maximum sampling rate 250Msaps Storage depth 512K Maximum input voltage 40Vpp Minimum voltage swing 1 2 Vpp Trigger types available are edge pattern duration The following is the LA operation menu Table 2 25 Function Measurement Item Explanatory Note LA function LA functions ON OFF Channel setup See Table 2 26 Threshold type Select threshold type TTL CMOS ECL or any user defined threshold type Sequence Sequence of channels currently open from small to large 49 UNI To UT4000 User Manual Table 2 26 Function Menu Setup Explanatory Note Channel setup Selection Select the LA channel Move Move the selected channel Display Display or close the selected channel D7 D0 Open D7 D0 channels Next page Go to the next page D15 D8 Open D15 D8 channels Waveform height Enlarge or restore the designated channel Previous page Return to the previous page Return Return to the previous menu Caution To
88. wer the unit will operate in the slow scan sampling mode When observing low frequency signals in slow scanning mode it is advised to set the channel coupling as DC S div A horizontal scaling time base unit If waveform sampling is stopped by pressing the RUN STOP button time base control can expand or compress the waveform Storage and Recall As shown below the STORAGE button in the control zone is the function key for the storage system Tu fear O oss os eo Ei omm cose cursor Jena Jon Tam 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 waveforms 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 1 Select reference waveform to go to the waveform storage menu shown below see Table 2 16 A stored reference waveform can be recalled with the REF key see Reference waveform page 23 For specific steps please see REF operation instructions 39 UNI To UT4000 User Manual Table 2 16 Reference waveform storage menu Function Menu Setup Explanatory Note Type Reference waveform Select the waveform storage and recall menu Signal source CH1 Select the waveform from CH1 CH2 Select the waveform from CH2 Storage positi
89. y Getting to Know the Vertical System Getting to Know the Horizontal System Getting to Know the Trigger System 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 Practical Example Illustrations UT4000 User Manual Table of Contents Page CO 0 U N ra 12 14 15 24 27 34 37 39 41 44 47 48 49 51 54 UNI To UT4000 User Manual Item Page Illustration 1 Measuring simple signals 52 Illustration 2 Observing the delay caused by a 53 sine wave signal passes through the circuit Illustration 3 Acquiring single signals 54 Illustration 4 Reducing random noise of signals 55 Illustration 5 Using cursors for measurement 56 Illustration 6 Using the X Y function 57 Illustration 7 Video signal triggering 59 Illustration 8 Pass fail check 61 Illustration 9 Quick acquisition 62 Illustration 10 Using the dual time base function 62 Illustration 11 Using the Logic Anaylzer 63 Illustration 12 Using the multimeter 64 Chapter 4 System Prompts and Trouble shooting 65 Definitions of System Prompts 65 Troubleshooting 65 Chapter 5 Service and Support 67 Warranty 67 Using the USB Upgrade Program 67 Contact Us 74 Chapter 6 Technical

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