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 55 
 

 

UNI-T

®

 

UT4000 User Manual 

 

 

Illustration 4 : Reducing random noise of signals 

 
If the signal being measured is stacked with random noise, you can adjust the setups of 
your oscilloscope to filter or reduce the noise, so it will not cause interference to the 
signal during measurement. (Waveform is shown below) 
 

 

Figure 3-4    Reducing random noise of signals 
 
Steps : 
1. 

As in the previous illustration, set the attenuation factor of the probe and CH1. 

2. 

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. 

4. 

Reducing display noise by setting the acquisition mode.

 

c

  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) 

Содержание UT4000 Series

Страница 1: ...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 ...

Страница 2: ...d 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 ...

Страница 3: ...e 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 reg...

Страница 4: ...nce centre operates Uni T shall pay the cost of returning the product to the customer If the product is to 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 ...

Страница 5: ...ding 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 o...

Страница 6: ...on 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...

Страница 7: ...tions 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 Oscilloscope...

Страница 8: ...wiftly and efficiently This manual is a user guide for 7 models of this digital storage oscilloscope series Model Bandwidth Single Channel Sampling Rate Dual Channel Sampling Rate Equivalent 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 150MHz 2GS s 1GS s 50GS s UT4202C 200MHz 2GS s 1GS s 50GS s UT4302C 300MHz 2GS s 1...

Страница 9: ... visually describes the strength of waveform z Scroll display in scan mode for continuous monitoring of signal variations z HD colour LCD system at 320 x 240 pixel aspect ratio z Unique XY mode that displays the waveform and Lissajous figure concurrently z USB drive system software upgrade z Supports plug and play USB storage devices and capable of communicating with a computer through the USB sto...

Страница 10: ...System 10 Getting to Know the Trigger System 12 Chapter 2 Instrument Setups 14 Setting Up the Vertical System 15 Setting Up the Horizontal System 24 Setting Up the Trigger System 27 Setting Up the Sampling System 34 Setting Up the Display System 37 Storage and Recall 39 Setting Up Utility Functions 41 Automatic Measurement 44 Cursor Measurement 47 Using the Run Button 48 Logic Analyzer LA Measurem...

Страница 11: ...l 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 6...

Страница 12: ...iliarize 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 ...

Страница 13: ...2 UNI T UT4000 User Manual Figure 1 1 Front panel of UT4000 Oscilloscopes ...

Страница 14: ...3 UNI T UT4000 User Manual Figure 1 2 Schematic diagram for operating the UT4000 front panel ...

Страница 15: ...4 UNI T UT4000 User Manual Figure 1 3 Schematic diagram for the display interface ...

Страница 16: ...amaged 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 Powe...

Страница 17: ...our UT4000 oscilloscope has dual input channels and one external trigger input channel Please access signals in the following steps c 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 UTILITY button Power ON OFF button ...

Страница 18: ... display 10X on the menu Figure 1 6 Setting the probe deflection factor of the oscilloscope e Connect the probe tip and ground clamp to the corresponding probe compensation signal terminals Press AUTO and you will see a square wave in the display about 3V peak to peak at 1kHz in a few seconds as shown in Figure 1 7 4 Repeat these steps to check CH2 Press the OFF function button to close CH1 then p...

Страница 19: ...f 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 feat...

Страница 20: ...ignal 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 ...

Страница 21: ...tical 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 yo...

Страница 22: ...indow 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 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 tri...

Страница 23: ...with the knob While you move the trigger level you will find the trigger level value at the bottom of the screen changing accordingly 2 Open the TRIGGER MENU see Figure 1 12 to change trigger setups General setups are as follows Press F1 twice to select the edge as TRIGGER TYPE Press F2 to select CH1 as TRIGGER SOURCE Select with the multifunction control knob then press SELECT to confirm Press F3...

Страница 24: ... 12 Trigger menu 3 Press the 50 button and set the trigger level at the vertical centre point of the trigger signal amplitude 4 Press FORCE to generate a compulsory trigger signal that is mainly used in the normal and single trigger modes ...

Страница 25: ...g 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 CURS...

Страница 26: ...es of the input signal are intercepted DC level of the channel input terminal upon equivalent grounding is displayed Bandwidth limit Full bandwidth 20MHz Full bandwidth Limit bandwidth to 20MHz to reduce noise display VOLTS DIV Coarse tune Fine tune Coarse tune in steps of 1 2 5 to set up the deflection factor of the vertical system Fine tune means further tuning within the coarse tune setup range...

Страница 27: ...AC coupling DC quantities of the signal being tested will be intercepted The waveform display is as follows 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 Figure 2 2 Both DC and AC quantities of the signal are displayed AC coupling setup DC c...

Страница 28: ... 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 Figure 2 4 Wavefor...

Страница 29: ...o 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 Figure 2 6 Setting up the probe attenuation fa...

Страница 30: ...e tune mode the VOLTS DIV range is 1mV div 10V div Tuning is in steps of 1 2 5 In fine tune mode you can change the deflection factor in even smaller steps within the current vertical range so as to continuously adjust the vertical deflection factor within the range of 1mV div 10V div without interruption Figure 2 7 Coarse tuning and fine tuning the vertical deflection factor Fine tune setup ...

Страница 31: ...ed 180 degrees with respect to the channel ground level Figure 2 8 shows the non inverted waveform Figure 2 9 shows the inverted waveform Figure 2 8 Inversion setup for vertical channel inversion non inverted Figure 2 9 Inversion setup for vertical channel inversion inverted Non inverted Inverted waveform ...

Страница 32: ...and 2 Operand 1 Operand 2 Operand 1 x Operand 2 Operand 1 Operand 2 Operand 2 CH1 CH2 Set operand 2 as CH1 waveform Set operand 2 as CH2 waveform Scaling ratio 1 1 1 10 1 100 1 1000 Scale the waveform by ratio There are four ratios to choose from 1 1 1 10 1 100 1 1000 FFT spectrum analysis By using the FFT Fast Fourier Transform algorithm you can convert time domain signals YT into frequency domai...

Страница 33: ...le 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 ...

Страница 34: ...eform Display of the saved reference waveforms can be set on or off in the REF menu The waveforms are saved in the non volatile memory of the oscilloscope or an external USB device and are identified with the following names RefA 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 sou...

Страница 35: ...veform 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 Setu...

Страница 36: ...nitions 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 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 w...

Страница 37: ...observed by thousands of times In effect the main time base storage depth is increased by thousands of times Dual time base operation instructions Press the horizontal setup menu then press F3 to enter the dual time base menu Press F1 to activate the dual time base function To 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...

Страница 38: ... 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...

Страница 39: ...et 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 CH2 EXT EXT 5 AC CH1 CH2 D0 D15 Set CH1 as the signal source trigger signal Set CH2 as the signal source trig...

Страница 40: ...h 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 CH1 CH2 EXT EXT 5 AC CH1 CH2 Set CH1 as...

Страница 41: ...t CH1 as the signal source trigger signal Set CH2 as the signal source trigger signal Set the external trigger input channel as the signal source trigger signal Divide the external trigger source by 5 times Set grid trigger CH1 and CH2 trigger their respective signals alternately Trigger coupling DC AC L F Suppression H F Suppression Allow AC and DC quantities of the trigger signal to pass Interce...

Страница 42: ...igh and low levels for each of the 16 width values Trigger mode Auto Normal Single The system automatically acquires waveform data when there is no trigger signal input The scan baseline is shown on the display When the trigger signal is generated it automatically turns to trigger scan The system stops acquiring data when there is no trigger signal When the trigger signal is generated trigger scan...

Страница 43: ...r the selection of displaying CH1 or CH2 Selecting main time base M1 or delay time base M2 Selecting fine tune or coarse tune shift Holdoff Adjust holdoff time with the multifunction control knob 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 t...

Страница 44: ...loscope 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 ra...

Страница 45: ...ger 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 Sys...

Страница 46: ...4 128 256 To change the average number of times use the multifunction control knob shown in Figure 2 18 Storage depth Standard storage Long storage DSO 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 acqu...

Страница 47: ...isplay 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 a...

Страница 48: ...mpling points are linked for display Sampling points are directly displayed Grid Full Grid Crosshair Frame Set the grid display mode of the waveform zone to full grid crosshair or frame Duration Auto 1s 2s 5s Infinite Waveform on the screen is refreshed at normal rate Waveform on the screen is maintained for 1 second and then refreshed Waveform on the screen is maintained for 2 seconds and then re...

Страница 49: ...sult 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 ...

Страница 50: ...utton 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 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...

Страница 51: ...nal 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 D...

Страница 52: ...rt 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 th...

Страница 53: ...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 Templa...

Страница 54: ...form 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 Thi...

Страница 55: ...r 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 ...

Страница 56: ...alue from the level base to ground GND of the waveform Overshoot The ratio value of the difference between maximum value and top value to the amplitude value of the waveform Preshoot The ratio value of the difference between minimum value and base value to the amplitude value of the waveform Average value Average amplitude of signals within 1 cycle Root mean square value Vrms The effective value E...

Страница 57: ... 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 customized pa...

Страница 58: ...d 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...

Страница 59: ...eflection 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 Tri...

Страница 60: ...u 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...

Страница 61: ...he designated channel Return to the previous page Return to the previous menu Caution To 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 appea...

Страница 62: ...ement 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 control knob Notes If it is necessary to test electric current follow these steps Insert the current voltage converter module UT M03 or UT M04 that comes with the oscilloscope into the digital multimeter port and mo...

Страница 63: ...l and horizontal range until you get the desired waveform display 2 Voltage and time parameters for automatic measurement Your oscilloscope can automatically measure most display signals To measure signal frequency and peak to peak value follow the steps below c Press MEASURE to display the automatic measurement menu d Press F2 to enter the measurement type selection menu e Use the multifunction c...

Страница 64: ...f the CH1 waveform by turning the vertical position control knob f Press CH2 to select CH2 In the same way described above adjust vertical position of the CH2 waveform so that the waveforms of CH1 and CH2 do not overlap This will make observation easier 2 Observing the delay caused by a sine wave signal passes through the circuit and observing waveform changes c When measuring channel delay automa...

Страница 65: ...r type to edge set trigger source to CH1 set trigger coupling to AC set trigger type to single and set edge type to rising e Adjust horizontal time base and vertical range to an appropriate range f Turn the TRIGGER LEVEL control knob to get the desired level g 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 on...

Страница 66: ...h 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 ...

Страница 67: ...e of a waveform Measuring the frequency of Sinc first peak To measure the Sinc frequency of the signal rising edge follow the steps below 1 Press CURSOR to display the cursor measurement menu 2 Press F1 to activate the cursor measurement function 3 Press F1 again to set cursor type to time 4 Press F3 to set the vertical cursor unit to Hz 5 Turn the multi function control knob to set cursor 1 at th...

Страница 68: ...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 If the channel is not displayed press the CH1 and CH2 menu button to enable the two channels 4 Press AUTO 5 Adjust the vertical SCALE knob to make the displayed amplitude of the...

Страница 69: ...alculating with this formula the angle of disparity is θ arcsin A or θ 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 0 π or 3π 2π 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 π π or π 3π 2 2 Furthermore if the frequencies and pha...

Страница 70: ...ntrol 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 zon...

Страница 71: ...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 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 wavefor...

Страница 72: ...ction 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 kno...

Страница 73: ...lear 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 Press F3 to set time base graticule to M1...

Страница 74: ...63 Figure 3 14 Dual time base function ...

Страница 75: ...ifting 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 D0 D7 then press F5 to go to the next page and press F1 to open channels D8 D15 In the LA menu you can press F5 to automatically arrange the channels on display in sequence 2 Using LA functions Set all LA channels as explained above Input ...

Страница 76: ...e 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 3 Connect the multimeter pen to the circuit being tested 4 If the signal being tested is relatively small follow step 2 to select an appropriate current range and use a suitable current voltage converter module Adj...

Страница 77: ...or no document meeting specific requirements is found on the USB device this prompt appears Function Disabled When closing the LA function in the LA menu this prompt appears if the LA trigger key in the trigger MENU is pressed Troubleshooting 1 If the screen of your oscilloscope remains black without any display after powering on follow the steps below to find the cause c Check the power cable con...

Страница 78: ...cy noise that is interfering with triggering 5 No display after pressing RUN STOP c 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 d Press AUTO to complete the setup 6 Display speed is slower after average sampling time is enabled c If average sampling is carried out fo...

Страница 79: ... 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...

Страница 80: ...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 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 Figure 5 3 Confirming th...

Страница 81: ...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 Figure 5 5 USB upgrade success ...

Страница 82: ...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 Figure 5 6 No valid upgrade file 2 The user cancels the upgrade process 1 When the oscilloscope is restarted with the USB device plugged in you can cancel upgrade by pressing F1 To cancel upgrade and operate your oscilloscope normally follow t...

Страница 83: ...loscope normally follow the on screen instructions Remove the USB device and reboot 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 Figure 5 9 Cancel upgrade 3 ...

Страница 84: ...me normal operation power on the oscilloscope with the USB device unplugged 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 repeat the prev...

Страница 85: ... department To resume normal operation power off your oscilloscope and then reboot Figure 5 12 Reading failure 6 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 devi...

Страница 86: ...ompatible 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 ...

Страница 87: ...ature 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 ...

Страница 88: ...g range s div 1ns div 50s div 300MHz 2ns div 50s div 200MHz 150MHz 5ns div 50s div 100MHz 80MHz 60MHz 40MHz At 1 2 5 increment Accuracy of sampling rate and delay time 50ppm any time interval 1ms Time interval ΔT measurement accuracy full bandwidth Single 1 sampling time interval 50ppm x reading 0 6ns 16 average values 1 sampling time interval 50ppm x reading 0 4ns ...

Страница 89: ...isition mode When vertical sensitivity is 2mV div 4 sampling or average acquisition mode When vertical sensitivity is 5mV div 10V div 3 sampling or average acquisition mode DC measurement accuracy average acquisition mode When vertical position is zero and N 16 5 x reading 0 1 div 1mV and 1mV div is selected 4 x reading 0 1 div 1mV and 2mV div or 5mV div is selected 3 x reading 0 1 div 1mV and 10m...

Страница 90: ...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 50Hz Edge Trigger Edge type Rise Fall Rise and Fall Pulse Trigger Trigger mode Greater than less than or equal to positive pulse Greater than less than or equal to negative pulse Pulse width ran...

Страница 91: ...veform dots Cursor Automatic measurement mode Allows cursor display during automatic 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...

Страница 92: ...ypical about 3V into peak to peak at 1 MΩ load 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 240VACRMS 45 440Hz CAT II Power Consumption Less than 50VA Fuse F1 6AL 250V On the power board inside the unit Environmental Temperature Operating 0 C 40 C Non operat...

Страница 93: ...anual EN61010 031 2002 standard Rating is 150V CAT II when the switch is in the 1X position Rating is 300V CAT II when the switch is in the 10X position z One international standard power cord z One User Manual z One Product Warranty Card z UT4000 communication control software USB Device z USB cable UT D04 z Two multimeter pens and two current voltage convertor modules UT M03 UT M04 z UT4000 logi...

Страница 94: ...ean the exterior surface perform the following steps 1 Remove loose dust on the outside of the oscilloscope and probes with a soft cloth When cleaning the LCD use care to avoid scratching the clear protection film of the LCD 2 Use a dampened but not dripping soft cloth to clean the oscilloscope Remember to disconnect power Use a mild cleaner or water To avoid damaging the product or probe do not u...

Страница 95: ...l check 5 General care 73 Rise time 45 Fall time 45 System prompts 65 Refresh rate 38 Single trigger 33 Vertical system 15 Grid 33 Acquisition 35 Cursor measurement 47 Display system 38 Forced 13 Horizontal system 10 Maths function 21 Measurement 46 Reference waveform 23 RUN STOP 49 Storage 39 Trigger system 27 Functions 41 Vertical system 15 Return to zero 9 Select 50 ...

Страница 96: ...w extension 25 Display system 37 Display type 78 Standard accessories 81 Real time sampling 75 Measuring simple signals 52 Sec div 11 Pulse width trigger 28 Language selection 45 Off 10 Using the RUN button 48 Horizontal system 24 Factory setup 42 Functional check 5 External trigger 33 Average 45 Average mode 36 Positive pulse width 29 Power source 77 Edge trigger 12 Alternate trigger 31 Cursor me...

Страница 97: ...stment 19 Delayed measurement 45 Channel setup 17 Channel coupling 16 Pretrigger 34 Reducing signal random noise 55 Probe compensation 8 Probe attenuation rate 18 Sampling system 34 Coarse tune fine tune 19 Utility functions 41 Maximum 45 Minimum 45 Equivalent sampling 75 Contact us 74 Math functions 21 Trigger level 12 Trigger setup 12 Trigger system 12 Holdoff 32 Trigger coupling 12 Input channe...

Страница 98: ...87 UNI T UT4000 User Manual This user manual may be revised without prior notice ...

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