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Uni-Trend UT4000 Series User Manual

Digital storage oscilloscope
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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

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  • Page 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...
  • Page 2 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.
  • Page 3 People’s Republic of China or other countries. 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.
  • Page 4 UNI-T ® UT4000 User Manual If this product is sold or assigned by the original purchaser to a third party within three years of purchase, the new owner should note that warranty is available for a period of three years from the day the original purchaser acquired the product from Uni-T or an authorized dealer.

  • Page 5: General Safety Rules

    UNI-T ® 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.
  • Page 6 UNI-T ® 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.

  • Page 7: Preface

    UNI-T ® 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 ⎯...
  • Page 8 UNI-T ® 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...
  • Page 9 [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 : 2GS/c real-time sampling rate (dual channel 1GS/s, single channel 2GS/s) and 50GS/s equivalent sampling rate (UT4152C/UT4202C/UT4302C) Dual time base function;...

  • Page 10: Table Of Contents

    UNI-T ® UT4000 User Manual Table of Contents Item Page General Safety Rules Preface Chapter 1 User Guide General Inspection Functional Check Probe Compensation Automatic Setups for Waveform Display Getting to Know the Vertical System Getting to Know the Horizontal System Getting to Know the Trigger System Chapter 2 Instrument Setups...
  • Page 11 UNI-T ® UT4000 User Manual Item Page Illustration 1 : Measuring simple signals Illustration 2 : Observing the delay caused by a sine wave signal passes through the circuit Illustration 3 : Acquiring single signals Illustration 4 : Reducing random noise of signals Illustration 5 : Using cursors for measurement Illustration 6 : Using the X-Y function Illustration 7 : Video signal triggering...

  • Page 12: User Guide

    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.
  • Page 13 UNI-T ® UT4000 User Manual Figure 1-1 Front panel of UT4000 Oscilloscopes...
  • Page 14 UNI-T ® UT4000 User Manual Figure 1-2 Schematic diagram for operating the UT4000 front panel...
  • Page 15 UNI-T ® UT4000 User Manual Figure 1-3 Schematic diagram for the display interface...

  • Page 16: General Inspection

    UNI-T ® 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 performing satisfactorily.
  • Page 17 UNI-T ® 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 following steps : 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).
  • Page 18 UNI-T ® 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.

  • Page 19: Probe Compensation

    UNI-T ® 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 compensation calibration step will result in measurement error or fault. Please adjust probe compensation as follows : In the CH1 menu set the probe to 10X.

  • Page 20: Getting To Know The Vertical System

    UNI-T ® 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 Turn the vertical position knob [POSITION] to enable the waveform to display the...

  • Page 21: Getting To Know The Horizontal System

    UNI-T ® UT4000 User Manual 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.
  • Page 22 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.

  • Page 23: Getting To Know The Trigger System

    UNI-T ® 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 setups. Figure 1-11 Trigger controls 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.
  • Page 24 UNI-T ® UT4000 User Manual Figure 1-12 Trigger menu Press the [50%] button and set the trigger level at the vertical centre point of the trigger signal amplitude. Press [FORCE] to generate a compulsory trigger signal that is mainly used in the normal and single trigger modes.

  • Page 25: Instrument Setups

    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.

  • Page 26: Setting Up The Vertical System

    UNI-T ® UT4000 User Manual 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.
  • Page 27 UNI-T ® 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.
  • Page 28 UNI-T ® 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) Ground coupling setup Figure 2-3 Screen display for the...
  • Page 29 UNI-T ® 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 : Bandwidth limit 20MHZ Bandwidth limit icon Figure 2-5 Waveform display when bandwidth limit is on 3.
  • Page 30 UNI-T ® 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 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.
  • Page 31 UNI-T ® 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. Non-inverted Figure 2-8 Inversion setup for vertical channel inversion (non-inverted) Inverted waveform Figure 2-9 Inversion setup for vertical channel inversion (inverted)
  • Page 32 UNI-T ® UT4000 User Manual I. Operating Math Functions Math functions are displays of +, -, ×, ÷, FFT mathematical results and digital filtering function of CH1 and CH2 waveforms. The menu is as follows : Math range Figure 2-10 Math functions Table 2-2 Explanatory notes for the Math menu Function Menu...
  • Page 33 UNI-T ® UT4000 User Manual Table 2-3 Explanatory notes for the FFT menu Function Menu Setup Explanatory Note Type To carry out FFT algorithm functions. Signal source Set CH1 as math waveform. Set CH2 as math waveform. Window function Hamming Set Hamming window function.
  • Page 34 UNI-T ® 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.

  • Page 35: Setting Up The Horizontal System

    UNI-T ® 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 B Select the REF B reference option. Recall Recall a waveform stored in any of the 10 with the multifunction control knob, then press [SELECT] to confirm.
  • Page 36 UNI-T ® UT4000 User Manual Definitions of Horizontal Parameter Icons The signal frequency currently selected as 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.
  • Page 37 UNI-T ® 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.

  • Page 38: Setting Up The Trigger System

    UNI-T ® 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.
  • Page 39 UNI-T ® UT4000 User Manual Table 2-7 (Con’t) Function Menu Setup Explanatory Note D0-D15 Set one of the channels between D0-D15 as the signal source trigger signal (the LA function must be enabled). Trigger coupling Allow AC and DC quantities of the input signal to pass.
  • Page 40 UNI-T ® 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.
  • Page 41 UNI-T ® UT4000 User Manual When PAL is selected for video and synchronization mode is line, you will see a screen display as shown in Figure 2-15. When synchronization mode is field, you will see a screen display as shown in Figure 2-16. Figure 2-15 Video trigger : line synchronization Figure 2-16 Video trigger : field synchronization Slew Rate Trigger...
  • Page 42 UNI-T ® UT4000 User Manual Table 2-11 (Con’t) Trigger mode 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.
  • Page 43 UNI-T ® 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.
  • Page 44 UNI-T ® UT4000 User Manual Definitions 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).

  • Page 45: Setting Up The Sampling System

    UNI-T ® UT4000 User Manual High Frequency Suppression : Attenuating high frequency quantities over 80kHz. Pretrigger/Delayed Trigger : Data sampled before/after triggering. The trigger position is typically set at the horizontal center of the screen. In this case, you are able to view 5 divisions of pretrigger waveform and 5 divisions of post-trigger waveform.
  • Page 46 UNI-T ® 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.
  • Page 47 UNI-T ® UT4000 User Manual 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.

  • Page 48: Setting Up The Display System

    UNI-T ® UT4000 User Manual Setting Up the Display System As shown below, the [DISPLAY] button in the control zone is the function key for the display system. 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.
  • Page 49 UNI-T ® 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. 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.

  • Page 50: Storage And Recall

    UNI-T ® 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.
  • Page 51 UNI-T ® 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 Select the waveform from CH1. Select the waveform from CH2. Storage position 1~10 With the multifunction control knob, set and select the position in which the reference...

  • Page 52: Setting Up Utility Functions

    UNI-T ® 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. Table 2-18 Bitmap storage menu Function Menu Setup Explanatory Note Bitmap...
  • Page 53 UNI-T ® UT4000 User Manual Table 2-19 Utility functions menu (1) Function Menu Setup Explanatory Note System configuration Auto calibration Run auto system calibration. System information Display information like oscilloscope software and hardware versions. Clear information Clear all saved reference waveforms and front panel status setups.
  • Page 54 UNI-T ® UT4000 User Manual Table 2-21 Waveform recording menu Function Menu Setup Explanatory Note (F4) Stop recording (F3) 1. Playback button. 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.

  • Page 55: Automatic Measurement

    UNI-T ® UT4000 User Manual Automatic Measurement As shown below, the [MEASURE] button is the function key for auto measurement. Read the following instructions to familiarize with all the powerful automatic measurement functions of your UT4000. 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.
  • Page 56 UNI-T ® 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.
  • Page 57 UNI-T ® UT4000 User Manual Measurement menu 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.

  • Page 58: Cursor Measurement

    UNI-T ® 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. 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.

  • Page 59: Using The Run Button

    UNI-T ® 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 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.

  • Page 60: Logic Analyzer (La) Measurement

    UNI-T ® 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 waveform.
  • Page 61 UNI-T ® 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.

  • Page 62: Multimeter Measurement

    UNI-T ® UT4000 User Manual Multimeter Measurement 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 Voltage Activate the voltage measurement function. mode Maximum measurement value for DC voltage is 400V.

  • Page 63: Practical Example Illustrations

    UNI-T ® 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. 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.
  • Page 64 UNI-T ® 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.
  • Page 65 UNI-T ® 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.
  • Page 66 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.
  • Page 67 UNI-T ® UT4000 User Manual 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.
  • Page 68 UNI-T ® UT4000 User Manual 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.
  • Page 69 UNI-T ® UT4000 User Manual Adjust the vertical scale and vertical position knob to achieve the best result of waveform. 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 If sin θ...
  • Page 70 UNI-T ® 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 : Press [MENU] in the trigger control zone to display the trigger menu.
  • Page 71 UNI-T ® UT4000 User Manual Video line triggering To trigger on the video line, follow the steps below : Press trigger [MENU] button in the trigger control zone to display the trigger menu. Press [F1] then [F3] to set the type to video. Press [F2] then turn the multifunction control knob to set trigger source to CH1.
  • Page 72 UNI-T ® 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.
  • Page 73 UNI-T ® 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. Figure 3-12 Quick acquisition (OFF) Figure 3-13...
  • Page 74 Figure 3-14 Dual time base function...
  • Page 75 UNI-T ® UT4000 User Manual Illustration 11 : Using the Logic Analyzer 1. Setting the LA channel : Insert the LA probe into the interface at the rear of the oscilloscope. Press the LA function key to access the LA menu. Press [F1] to activate the LA function, then press [F2] for channel setup.
  • Page 76 UNI-T ® 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.
  • Page 77 UNI-T ® 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.
  • Page 78 UNI-T ® UT4000 User Manual 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. There is waveform display but it is not stable : Check the trigger source setup in the trigger menu.
  • Page 79 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.
  • Page 80 UNI-T ® 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) Figure 5-2...
  • Page 81 UNI-T ® UT4000 User Manual 5. When the USB document is confirmed the following prompt will appear : “System upgrade is in progress. Please wait”. (This process may take 3 to 5 minutes) Figure 5-4 USB upgrade in progress 6. When upgrade is complete, a successful upgrade prompt will appear : “Upgrade is successfully complete.
  • Page 82 UNI-T ® 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 : 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.”...
  • Page 83 UNI-T ® UT4000 User Manual 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.” Figure 5-8 Cancel upgrade (2) You can still cancel upgrade when the oscilloscope is ready for the process.
  • Page 84 UNI-T ® UT4000 User Manual 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.
  • Page 85 UNI-T ® 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.
  • Page 86 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.
  • Page 87 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 oscilloscope meets specifications, it must first meet the following conditions : The oscilloscope must have been operating continuously for thirty minutes within the specified operating temperature.
  • Page 88 UNI-T ® UT4000 User Manual Horizontal Waveform interpolation Sin (x) / x Storage depth 24K (Max) Equivalent storage depth (dual time base) Recording length 1024K Scanning range (s/div) 1ns/div-50s/div (300MHz); 2ns/div-50s/div (200MHz, 150MHz); 5ns/div-50s/div (100MHz, 80MHz, 60MHz, 40MHz); At 1-2-5 increment. Accuracy of sampling ±50ppm (any time interval ≥1ms) rate and delay time...
  • Page 89 UNI-T ® 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 ≥ ± 10 div Analog bandwidth 300MHZ, 200MHz, 150MHz, 100MHz, 80MHz, 60MHz, 40MHz...
  • Page 90 UNI-T ® UT4000 User Manual Trigger ≤ 1 div Trigger sensitivity Trigger level range Internal ± 8 div from the centre of the screen ± 3V EXT/5 ± 15V Trigger level accuracy Internal ± (0.3 div x V/div) (within ± 4 (Typical) applied on signals div from the centre of the of ≥20ns rise or fall time...
  • Page 91 UNI-T ® 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...
  • Page 92 UNI-T ® UT4000 User Manual General Specifications Display Display Type 145 mm(5.7 in) diagonal LCD. Display Resolution 320 horizontal x RGB x 240 vertical pixels (True colour LCD). Contrast (typical) Non-adjustable. Backlight Intensity 300 nit. (Typical) Display Languages Simplified Chinese, Traditional Chinese, English. Probe Compensator Output Output Voltage...
  • Page 93 UNI-T ® 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 Standard Accessories : Two 1.5m, 1:1 (10:1) passive voltage probes.
  • Page 94 UNI-T ® 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.
  • Page 95 UNI-T ® UT4000 User Manual Index Numeral 50% button …………………………………………………….. Alphabet …………………………………………………….. EXT/5 …………………………………………………….. FFT resolution ….……………………………………………… FFT frequency analysis ……..………………………………… …………………………………………………….. X-Y mode …………………………………………………….. Y-T mode …………………………………………………….. Chinese General check …………………………………………………… General care …………………………………………………….. Rise time …………………………………………………….. Fall time ……………………………………………………..
  • Page 96 UNI-T ® UT4000 User Manual Coarse tune ………………………………………………… Nyquist frequency …………………………………………… Top value ……………………………………………………… Bottom value …………………………………………………. Technical indicators ……………………………………… Waveform inversion ……………………………………… Waveform recording ……………………………………… Pulse trigger ………………………………………………… Video trigger ………………………………………………… Cleaning …………………………………………………….. Top value …………………………………………………….. Save …………………………………………………….. Warranty …………………………………………………….. Operand ……………………………………………………..
  • Page 97 UNI-T ® UT4000 User Manual RUN button …………………………………………………… Mechanical specifications …………………………………… Automatic setup …………………………………………… Automatic measurement ……………………………………… Automatic trigger …………………………………………… Self calibration …………………………………………… Line synchronization ……………………………………… Negative pulse width ……………………………………… Root mean square value ……………………………………… Peak measurement …………………………………………… Peak-to-peak ………………………………………………… Acquiring single signals ………………………………………...
  • Page 98 UNI-T ® UT4000 User Manual This user manual may be revised without prior notice.

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