UNI-T UT 4000 Series Manual de usuario

File : UTG-005 Date : March 20, 2009 Draft : 1 This product conforms with safety product design requirements of UL and CE standards. UT4000

UNI-T® UT4000 User Manual Table of Contents Item Page General Safety Rules Preface Chapter 1 User Guide 1 General Inspection 5 Function

UNI-T®UT4000 User Manual Item Page Illustration 1 : Measuring simple signals 52 Illustration 2 : Observing the delay caused by a sine wav

1 UNI-T® UT4000 User Manual Chapter 1 ⎯ User Guide UT4000 Series digital storage oscilloscopes are small and compact portable devices. The user-

2 UNI-T®UT4000 User Manual Figure 1-1 Front panel of UT4000 Oscilloscopes

3 UNI-T® UT4000 User Manual Figure 1-2 Schematic diagram for operating the UT4000 front panel

4 UNI-T®UT4000 User Manual Figure 1-3 Schematic diagram for the display interface

5 UNI-T® UT4000 User Manual General Inspection We suggest checking your new UT4000 oscilloscope in the following steps. 1. Check the unit for po

6 UNI-T®UT4000 User Manual Figure 1-4 Warning : To avoid danger, ensure the digital storage oscilloscope is safely grounded. 2. Acces

7 UNI-T® UT4000 User Manual d You have to set the probe attenuation factor of the oscilloscope. This factor changes the vertical range multiple to

8 UNI-T®UT4000 User Manual Probe Compensation When connecting the probe to any input channel for the first time, perform this adjustment to matc

Introduction Dear valued user, Thank you for purchasing a Uni-Trend instrument. To use your new product correctly, read this User Manual careful

9 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 vert

10 UNI-T®UT4000 User Manual 2. Change the vertical setups and check changes of status information. You can identify changes of any vertical rang

11 UNI-T® UT4000 User Manual 1. Use the horizontal SEC/DIV knob to change the horizontal time base setup. Turn the horizontal SEC/DIV knob to cha

12 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 f

13 UNI-T® UT4000 User Manual Figure 1-12 Trigger menu 3. Press the [50%] button and set the trigger level at the vertical centre point of the

14 UNI-T®UT4000 User Manual Chapter 2 ⎯ Instrument Setups You should be familiar with basic operation of the vertical controls, horizontal contro

15 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 it

16 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 signa

17 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 t

18 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 w

UNI-T®UT4000 User Manual Copyright Information z Uni-Trend Technology (Dongguan) Limited. All rights reserved. z Products of the Company ar

19 UNI-T® UT4000 User Manual 4. Vertical VOLTS/DIV adjustment setup You can adjust the VOLTS/DIV range of the vertical deflection factor either

20 UNI-T®UT4000 User Manual 5. Waveform inversion setup Waveform inversion : The displayed signal is inverted 180 degrees with respect to the ch

21 UNI-T® UT4000 User Manual I. Operating Math Functions Math functions are displays of +, -, ×, ÷, FFT mathematical results and digital filteri

22 UNI-T®UT4000 User Manual Table 2-3 Explanatory notes for the FFT menu Function Menu Setup Explanatory Note Type FFT To carry out FFT al

23 UNI-T® UT4000 User Manual Definition : FTT recognition rate : It means the quotient of the sampling and math points. When math point value is

24 UNI-T®UT4000 User Manual Table 2-5 Selecting the storage position Function Menu Setup Explanatory Note Reference waveform REF A REF B Sele

25 UNI-T® UT4000 User Manual Definitions of Horizontal Parameter Icons c The signal frequency currently selected as the trigger source. d Po

26 UNI-T®UT4000 User Manual Dual Time Base Function The dual time base function is similar to window extension but there is a fundamental differ

27 UNI-T® UT4000 User Manual Setting up the Trigger System Triggering decides when the oscilloscope collects data and display waveforms. Once th

28 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 signa

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

29 UNI-T® UT4000 User Manual Table 2-8 (Con’t) Function Menu Setup Explanatory Note Trigger mode Auto Normal Single The system automaticall

30 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

31 UNI-T® UT4000 User Manual Table 2-11 (Con’t) Trigger mode Normal Single The system stops acquiring data when there is no trigger signal. Wh

32 UNI-T®UT4000 User Manual Adjusting the Holdoff Time You can adjust the holdoff time to observe complicated waveforms (e.g. pulse string serie

33 UNI-T® UT4000 User Manual Definitions 1. Trigger source : This means the signal for trigger. Trigger can be obtained from various sources :

34 UNI-T®UT4000 User Manual  High Frequency Suppression : Attenuating high frequency quantities over 80kHz. 4. Pretrigger/Delayed Trigger : Da

35 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. Tab

36 UNI-T®UT4000 User Manual Figure 2-20 Waveform display when 32-time average sampling is selected Definitions : Normal mode : The digital

37 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

38 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 di

UNI-T®UT4000 User Manual General Safety Rules This unit is designed and manufactured strictly in accordance with GB4793 safety requirements for

39 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 mo

40 UNI-T® UT4000 User Manual Table 2-16 Reference waveform storage menu Function Menu Setup Explanatory Note Type Reference waveform Select

41 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

42 UNI-T®UT4000 User Manual Table 2-19 Utility functions menu (1) Function Menu Setup Explanatory Note System configuration Auto calibratio

43 UNI-T® UT4000 User Manual Table 2-21 Waveform recording menu Function Menu Setup Explanatory Note  (F4) Stop recording f(F3) 1. Pla

44 UNI-T®UT4000 User Manual Automatic Measurement As shown below, the [MEASURE] button is the function key for auto measurement. Read the follow

45 UNI-T® UT4000 User Manual Example 2 : Setup for delayed measurement. You can use the delayed measurement function to measure the time interval

46 UNI-T®UT4000 User Manual Measurement menu Operation : Press [MEASURE] to display 4 function options, as shown in the table below. Table 2-22

47 UNI-T® UT4000 User Manual Cursor Measurement Press [CURSOR] to display the measurement cursor and cursor menu, then adjust the cursor position

48 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 pr

UNI-T® UT4000 User Manual Do not operate in combustible and explosive conditions. Keep the product surface clean and dry. Safety Messages and S

49 UNI-T® UT4000 User Manual RUN/STOP : Acquire waveform continuously or stop acquisition. If you want the oscilloscope to acquire waveform contin

50 UNI-T®UT4000 User Manual Table 2-26 Function Menu Setup Explanatory Note Channel setup Selection Move Display D7-D0 Next page D15-D8 Wavefo

51 UNI-T® UT4000 User Manual Multimeter Measurement Operation instructions : Open the multimeter function menu (Table 2-27) by pressing the DMM

52 UNI-T®UT4000 User Manual Chapter 3 ⎯ Practical Example Illustrations Illustration 1 : Measuring simple signals To observe and measure an unk

53 UNI-T® UT4000 User Manual Illustration 2 : Observing the delay caused by a sine wave signal passes through the circuit As in the previous sce

54 UNI-T®UT4000 User Manual Illustration 3 : Acquiring single signals The advantage and special feature of your digital storage oscilloscopes li

55 UNI-T® UT4000 User Manual Illustration 4 : Reducing random noise of signals If the signal being measured is stacked with random noise, you ca

56 UNI-T®UT4000 User Manual Figure 3-5 Signal noise suppressed d You can also lower waveform brightness to reduce display noise. Caution : I

57 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

58 UNI-T® UT4000 User Manual 8. Adjust the vertical scale and vertical position knob to achieve the best result of waveform. 9. Using the ellip

UNI-T®UT4000 User Manual Preface This manual provides information on the operation of the UT4000 digital storage oscilloscope series. Guidance i

59 UNI-T® UT4000 User Manual Illustration 7 : Video signal triggering To observe an individual video circuit, use the video trigger function to o

60 UNI-T®UT4000 User Manual Video line triggering To trigger on the video line, follow the steps below : 1. Press trigger [MENU] button in the tr

61 UNI-T® UT4000 User Manual Illustration 8 : Pass/fail check To check whether the input signal is within the standard range. Fail means outside

62 UNI-T®UT4000 User Manual Illustration 9 : Quick acquisition In the [ACQUIRE] menu, [F5] is the key for quick acquisition. To observe the rapid

63 Figure 3-14 Dual time base function

64 UNI-T® UT4000 User Manual Illustration 11 : Using the Logic Analyzer 1. Setting the LA channel : (1) Insert the LA probe into the interfac

65 UNI-T®UT4000 User Manual Illustration 12 : Using the multimeter The multimeter of this digital storage oscilloscope can measure 5 parameter

66 UNI-T® UT4000 User Manual Chapter 4 ⎯ System Prompts and Trouble-shooting Definitions of System Prompts Adjustment at Ultimate Limit : This

67 UNI-T®UT4000 User Manual 3. The measurement voltage amplitude value is 10 times larger or smaller than the actual value : Check if the channel

68 UNI-T® UT4000 User Manual Chapter 5 ⎯ Service and Support Warranty (UT4000 Series Digital Storage Oscilloscopes) UNI-T (Uni-Trend Electronic

UNI-T® UT4000 User Manual UT4000 Introduction UT4000 oscilloscopes offer user-friendliness, outstanding technical indicators and a host of advan

69 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 u

70 UNI-T® UT4000 User Manual 5. When the USB document is confirmed the following prompt will appear : “System upgrade is in progress. Please wai

71 UNI-T®UT4000 User Manual Caution : If upgrade fails due to power interruption, power off the oscilloscope and repeat all the USB upgrade steps

72 UNI-T® UT4000 User Manual (2) During the upgrade process, you can cancel upgrade by pressing [F1]. To cancel upgrade and operate your oscillo

73 UNI-T®UT4000 User Manual 3. The USB device is removed before upgrade begins. If the USB device is removed when the update document is being

74 UNI-T® UT4000 User Manual 5. Failure in reading upgrade document After selecting the upgrade document, press [F5] to read. If the document

75 UNI-T®UT4000 User Manual 7. Software document incompatible with product model If the USB upgrade document is incompatible with the oscillos

76 UNI-T® UT4000 User Manual Chapter 6 ⎯ Appendixes Appendix A : Technical Indicators Unless otherwise specified, all technical specifications

77 UNI-T®UT4000 User Manual Horizontal Waveform interpolation Sin (x) / x Storage depth 24K (Max) Equivalent storage depth (dual time base) 60M

78 UNI-T® UT4000 User Manual Vertical Model UT4302C UT4202C UT4152C UT4102C UT4082C UT4062C UT4042CA/D converter (A/D) 8-bit resolution, two ch

UNI-T®UT4000 User Manual UT4000 oscilloscopes offer a user-friendly front panel with clear indications to allows access to all basic functions fo

79 UNI-T®UT4000 User Manual Trigger Trigger sensitivity ≤ 1 div Internal ± 8 div from the centre of the screen EXT ± 3V Trigger level range EXT

80 UNI-T® UT4000 User Manual Signal format and line/field frequency (video trigger type) Supports standard NTSC and PAL Line range : 1-525 (NTSC

81 UNI-T®UT4000 User Manual General Specifications Display Display Type 145 mm(5.7 in) diagonal LCD. Display Resolution 320 horizontal x RGB x

82 UNI-T® UT4000 User Manual Mechanical Specifications UT4000 Width 336 mm Height 177 mm Dimension Depth 174mm Weight Unit only 3.8kg Inc

83 UNI-T®UT4000 User Manual Appendix C : Maintenance and Cleaning General Care Do not store or leave the oscilloscope where the LCD display will

84 UNI-T® UT4000 User Manual Index Numeral 50% button …………………………………………………….. 13 Alphabet EXT …………………………………………………….. 28 EXT/5 ………………………………

85 UNI-T®UT4000 User Manual Coarse tune ………………………………………………… 15 Nyquist frequency …………………………………………… 23 Top value ………………………………………………………

86 UNI-T® UT4000 User Manual RUN button …………………………………………………… 54 Mechanical specifications …………………………………… 81 Automatic setup ……………………………

87 UNI-T®UT4000 User Manual This user manual may be revised without prior notice.

88 UNI-T® UT4000 User Manual Uni-Trend Electronic (Shanghai) Limited Address : Room 15, 11/F, China Merchants Tower, 161 Lujiazhui Dong Lu, Pudo