Unit utd2000 User manual

UTD2000 Series User Manual
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UTD2000 Series
User Manual

UTD2000 Series User Manual
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Guaranty and Declaration
Dear custumer,
Thank you for choosing this UNI-T device. In order to safely and correctly use this
instrument .please read this manual thoroughly, especially the Safety Notes part. After
reading this manual, it is recommended to keep the manual at an easily accessible place,
preferably close to the device, for future reference.
Copyright Information
UNl-T Uni-Trend Technology (China) Co., Ltd. All rights reserved.
Trademark Information
UNI-T is the registered trademark of Uni-Trend Technology (China) Co., Ltd.
Document Version
UTD2000 -20190520-V2.00
Statement
zUNI-T products are protected by patent rights in China and foreign countries,
including issued and pending patents.
zUNI-T reserves the rights to any product specification and pricing changes.
zUNI-T reserves all rights. Licensed software products are properties of Uni-Trend and
its subsidiaries or suppliers, which are protected by national copyright laws and
international treaty provisions.
Information in this manual supercedes all previously published versions.

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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. 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 (at the discretion of Uni-T). 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 destination, all freight,
custom duty, tax and other costs will be paid by the customer.
This warranty shall not apply to any defects or damages caused by accidental,
machine parts’ wear and tear, improper use, and improper or lack of maintenance. UNI-T
under the provisions of this warranty has no obligation to provide the following services:
a) Any repair damage caused by the installation, repair, or maintenance of the
product by non UNI-T service representatives.
b) Any repair damage caused by improper use or connection to an incompatible
device.
c) Any damage or malfunction caused by the use of a power source that does not
conform to the requirements of this manual.
d) Any maintenance on altered or integrated products (if such alteration or integration
leads to an increase in time or difficulty of product maintenance).
This warranty written by UNI-T for this product, and it is used to substitute any other
express or implied warranties. UNI-T and its distributors do not offer any implied
warranties for merchantability or applicability purposes.
For violation of this guarantee, UNI-T is responsible for the repair or replacement of
defective products is the only remedy available to customers. Regardless of whether
UNI-T and its distributors are informed that any indirect, special, incidental, or
consequential damage may occur, UNI-T and its distributors shall not be responsible for
any of the damages.

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General Safety Overview
This instrument strictly complies with the safety requirements for electronic
measuring instrument GB4793 and IEC 61010-1 safety standard during design and
manufacturing. Please understand the following safety preventative measures, to avoid
personal injury, and to prevent damage to the product or any connected products. To
avoid possible dangers, be sure to use this product in accordance with the regulations.
zOnly trained personnel can perform the maintenance program.
zUse the correct power line: Only use the dedicated UNI-T power supply appointed to
the local region or country for this product.
zCorrect Plug: Don't plug when the probe or test wire is connected to the voltage
source.。
zGround the product: This product is grounded through the power supply ground wire.
To avoid electric shock, grounding conductors must be connected to the ground.
Please be sure that the product is properly grounded before connecting to the input or
output of the product.
zCorrect connection of oscilloscope probe: Ensure that the probe ground and ground
potential are correctly connected. Do not connect ground wire to high voltage.
zCheck all terminal ratings: To avoid fire and the large current charge, please check all
the ratings and the marks on the product. Please also refer to the product manual for
details on the ratings before connecting to the product.
zDo not open the case cover or front panel during operation。
zOnly use fuses with ratings listed in the technical index
zAvoid circuit exposure: Do not touch exposed connectors and components after
power is connected.
zDo not operate the product if you suspect it is faulty, and please contact UNI-T
authorized service personnel for inspection. Any maintenance, adjustment, or
replacement of parts must be performed by UNI-T authorized maintenance
personnel.
zMaintain proper ventilation
zPlease do not operate the product in humid conditions
zPlease do not operate in inflammable and explosive environment
zPlease keep the product surface clean and dr

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Safety Terms and Symbols
The following terms may appear in this manual:
Warning: The conditions and behaviors may endanger life.
Note: The conditions and behaviors may cause damage to the product and other
properties.
The following terms may appear on the product:
Danger: Performing this operation may cause immediate damage to the
operator.
Warning: This operation may cause potential damage to the operator.
Note: This operation may cause damage to the product and devices
connected to the product.
The following symbols may appear on the product:

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Preface
The Manual introduces information related to operation of digital storage oscilloscope
of UTD2000 series user manual series. The Manual comprise the following chapters:
Chapter 1 Introduction Guide
Chapter 2 Vertical channel setting
Chapter 3 Horizontal system setting
Chapter 4 Trigger system setting
Chapter 5 Sampling system setting
Chapter 6 Display system setting
Chapter 7 Automatic measurement
Chapter 8 Cursor measurement
Chapter 9 Storage and callback
Chapter 10 Auxiliary function setting
Chapter 11 Other function keys
Chapter 12 Applicaion example
Chapter 13 System prompt and troubleshooting
Chapter 14 Technical specification
Chapter 15 Appendix
UTD2000 Series Digital Storage Oscilloscope contains the following 6 models
Series Model Band width Real-time
UTD2000L UTD2025CL 25MHz 250MS/s
UTD2052CL 50MHz 500MS/s
UTD2102e UTD2102e 100MHz 500MS/s
UTD2000EX
UTD2052CEX 50MHz 1GS/s
UTD2072CEX 70MHz 1GS/s
UTD2102CEX 100MHz 1GS/s
UTD2000 series provide the users with front panels with simple operation and clear
functions to perform all the basic operations. Scale and position knobs of each channel
provide visual operations that are suitable for user habits as the traditional instrument.
Usersmay be able to master it without spending plenty of time learning and understanding
operations of any UTD2000 series DSO. In order to accelerate adjustment and facilitate
measurement, the users can directly press AUTO key and the instrument will then display
applicable waveform and gear position settings.
Apart from easy to use, UTD2000 series DSO also has high performance indexes
and powerful functions required for faster completion of measurement tasks. Powerful
trigger and analysis ability make it easier to capture and analyze waveforms. Clear LCD
and mathematical operation functions make it easier for users to observe and analyze

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signal problems in a faster and clearer way.
From the following parameter features, you can understand how this series of DSO
can satisfy your measurement requirements.
zTwo analog channels
zHigh resolution LCD display 400×240 (or 800×480) resolution
zSupport plug and play USB storage equipment or be capable of communicating with
computer via USB storage equipment.
zAutomatic waveform and state settings
zWaveform saving and replay feature
zDelicate window extension function and precise analysis on waveform details and
overview
zAutomatic measurement of 28 waveform parameters
zAutomatic cursor tracking measurement function
zUnique functions of waveform recording and playback.
zBuilt-in FFT software function
zMulti-waveform mathematical operation function (including: addition, subtraction,
multiplication and division)
zEdge, Video, Pulse width, Alternating trigger and other functions
zMulti-language menu selection

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Contents
Guaranty and Declaration ...................................................................................................2
General Safety Overview.....................................................................................................4
Safety Terms and Symbols .................................................................................................5
Preface 6
Contents ................................................................................................................................8
Chapter I Introductions...................................................................................................10
1.1 General Inspection........................................................................................... 11
1.2 Function Inspection......................................................................................... 11
1.3 Probe Compensation....................................................................................... 13
1.4 Automatic Settings of Waveform Display ...................................................... 13
1.5 Introduction to The Vertical System............................................................... 13
1.6 Introduction to The Horizontal System .......................................................... 14
1.7 Introduction to The Trigger System ............................................................... 15
Chapter II Vertical System ..............................................................................................16
2.1 Setting coupling channel ................................................................................ 16
2.2 Setting channel bandwidth Limited................................................................ 17
2.3 Setting probe Rate ........................................................................................... 18
2.4 Vertical Volts/Div adjustment setting ............................................................. 19
2.5 Settings of waveform inverting....................................................................... 19
2.6 Mathematical operation function.................................................................... 20
2.7 FFT spectral analysis....................................................................................... 21
Chapter III Horizontal System ........................................................................................23
3.1 Horizontal control ............................................................................................ 23
3.2 Explanation of nouns....................................................................................... 23
3.3 Window extension ........................................................................................... 24
3.4 Trigger hold-off time adjustment .................................................................... 24
Chapter IV Trigger System .............................................................................................26
4.1 Edge trigger...................................................................................................... 26
4.2 Pulse width trigger........................................................................................... 27
4.3 Video trigger..................................................................................................... 28
4.4 Alternating trigger............................................................................................ 29
4.6 Explanation of nouns....................................................................................... 30
Chapter V Acquire System .............................................................................................31
Chapter VI Display System.............................................................................................33
6.1 XY Mode............................................................................................................ 33
Chapter VII Measurement Parameters..........................................................................36
7.1 Measurement Menu ......................................................................................... 36
7.2 Voltage Parameter............................................................................................ 36

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7.3 Time parameter ................................................................................................ 37
Chapter VIII Cursor Measurement.................................................................................38
Chapter IX Storage and Load System...........................................................................39
9.1 Setup storage and load ................................................................................... 39
9.2 Waveform storage and load ............................................................................ 39
9.3 Bit map storage and load ................................................................................ 41
9.4 Screen copy...................................................................................................... 41
Chapter X Utility System.................................................................................................42
10.1 Pass/Fail ......................................................................................................... 42
10.2 Recorder ......................................................................................................... 44
Chapter XI Other funtion botton ....................................................................................45
11.1 AUTO ............................................................................................................... 45
11.2 RUN/STOP....................................................................................................... 45
11.3 Help Menu ....................................................................................................... 46
11.4 Upgrade program ........................................................................................... 46
Chapter XII Applicaion example ....................................................................................48
Example 1: Measuring simple signals ................................................................. 48
Example 2: Observing the delay caused by a sine wave signal passes through
the circuit................................................................................................................ 48
Example 3: Acquiring single signals.................................................................... 49
Example 4: Reducing random noise of signals................................................... 50
Example 5: Using the cursors for measurement................................................. 52
Chapter XIII System Prompts and Trouble-shooting..................................................54
13.1 Definitions of System Prompts..................................................................... 54
13.2 Troubleshooting............................................................................................. 54
Chapter XIV Technical Information ...............................................................................56
Chapter XV Appendix......................................................................................................60
Appendix A Accessories of UTD2000 Series....................................................... 60
Appendix B Maintenance and Cleaning............................................................... 60
Appendix C Warranty............................................................................................. 60
Appendix D Contact Us ......................................................................................... 61

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Chapter I Introductions
UTD2000 series DSO is desk type DSO. It is designed with conventional user
interface design for any of the basic DSO at the test and measurement industry.
This chapter will cover the following as the beginning guide the UTD2000 series
DSO:
△General inspection
△Functional inspection
△Probe compensation
△Automatic settings of waveform display
△Introduction to the vertical system
△Introduction to the horizontal system
△Introduction to the trigger system
When beginning to use your UTD2000L 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 UTD2000L series digital storage oscilloscope
as quickly as possible.
Your UTD2000L oscilloscope comes with a front panel with at-a-glance functions for
easy operation. There are knobs and function keys on the front panel. The functions of
knobs are similar to other Oscilloscope. On the right you will find the screen copy key
(PrtSc) which enables you to save the current screen in an external USB device in picture
format and 5 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
directly
Figure 1-1 Schematic Diagram of the UTD2000L Front Panel
Display horizontal trigger position
Multipurpose
knob User Menu
RUN/STOP
control
Prscrn
function key
Trigger control
Horizontal control
Vertical control
USB OTG
Interface
Single
Input
External
trigger Input
Probe compensation
singal output

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Figure 1-2 UTD2000 Series DSO User Interface Menu Display
1.1 General Inspection
After purchasing a new UTD2000 DSO, we recommend you to inspect the instrument
according to the following steps.
(1) Inspect whether there are damages caused by transportation
In case of badly damages to packing box or foamed plastic mat, you should replace
immediately.
(2) Accessories inspection
For provided accessories details, description has been made in aforesaid
“accessories of UTD2000 DSO” item of this user manual. Please check whether there are
shortages in the accessories. If you found shortage or damages of accessories, please
contact the UNI-T distributors distributing the product or local offices of UNI-T.
(3) Check the complete instrument
In case of damages to the appearance of instrument, abnormal operation or failure to
pass the performance tests, please contact the UNI-T product distributors or local UNI-T
offices.
If the instrument is damaged due to transportation, please pay attention to keeping
the package, notify transportation department and UNI-T product distributors and UNI-T
will make arrangement for repair or replacement.
Warning: please confirm that the DSO has been safely grounded to avoid hazard.
1.2 Function Inspection
Conduct a fast function inspection to verify whether the instrument is in normal
operation. Please take the steps as follows:
(1) Power on the instrument:
The power supply voltage range is from 100 VAC to 240 VAC, the frequency range is
45Hz to 440Hz. Connect the oscilloscope to the power supply line that came with the
Trigger state display Display time of center scale line
Channel 1 mark
Channel 2 mark
Menu Area
Waveform display window
Display channel vertical scale coefficient Display main time base setting

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oscilloscope or any power supply line that meets the host country standards. Press the
power switch button on the top of the oscilloscope, The oscilloscope then will show a boot
animation, and it will enter the normal interface afterwards.
Warning: please confirm that the DSO has been safely grounded to avoid
hazard.
(2) DSO accessing to signal
UTD2000 series DSO has two input channels with an additional external trigger input
channel. Please check the signal according to the following steps.
①Connect DSO probe to CH1 input terminal and set the attenuation rate switch on
the probe as 10× (Figure 1-3)
②It is required to set probe attenuation coefficient on DSO.
Attenuation coefficient changes the vertical gear position rate of instrument, thus
making the measurement result correctly reflect the amplitude of measured signals. Probe
attenuation coefficients are set in the following ways: press F4 to make the menu display
10×.
Figure 1-3 Setting of attenuation coefficient on DSO
③Connect the probe pin and ground clamp to the corresponding terminal of the
probe compensation signal. Press AUTO key. Within several seconds, square wave
display (1kHz, about 3V, peak-to-peak value) is as shown in Figure 1-7. Check CH2 in the
same way; press CH1 function key to close CH1; press CH2 function key to turn on CH2;
repeat step 2 and step 3.
Figure 1-4 Probe Compensation Signal

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1.3 Probe Compensation
When connecting the probe with any input channel for the first time, it is required to
make adjustment for this item, matching the probe with input channel. Probe without being
compensated and corrected will lead to measurement error or mistake. In case of
adjustment of probe compensation, follow the following steps:
(1) Set the probe menu attenuation coefficient as 10×, place the switch on the probe
at 10× and connect DSO probe with CH1. Connect the probe end and signal output
connector to the probe compensator, the ground clamp and ground lead connector of
probe compensator, turn on CH1 and press AUTO.
(2) Observe displayed waveform
Figure 1-5 Probe Compensation and Correction
(3) If screen displays “under-compensation” or “over-compensation” for waveform as
shown in above figures, use screwdriver with nonmetal handle to adjust the variable
capacitance on the probe until screen displays “correct compensation” for waveform as
shown in the below figure.
Warning: in order to avoid electric shock when measuring high voltage with
probe, please ensure that the insulation lead of the probe is in good condition and
do not contact the metal part of the probe when connecting high pressure power
supply.
1.4 Automatic Settings of Waveform Display
UTD2000 series DSO has automatic setting function. According to input signals,
automatically adjust the vertical deflection factor, scanning time base and trigger mode
until the most appropriate waveform is displayed. Apply automatic setting, the frequency
of the measured signal is required to be ≥50Hz and the duty ratio is > 1%.
Apply automatic setting:
(1) Connect measured signal to signal input channel.
(2) Press AUTO key. DSO will automatically set its vertical deflection factor, scanning
time base and trigger mode. If further careful observation is required, adjustment can be
conducted again after automatic settings until the waveform display reaches required
optimum effect.
1.5 Introduction to The Vertical System
As shown in the figure below, there are a series of keys and knobs in the vertical
Over-compensation Correct compensation Under-compensation

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control area. Practices below will gradually guide you to get familiar with the controlling of
the vertical system.
Figure 1-6 Vertical Control Area on the Panel
(1) Turn the vertical position knob to display the signal in the centre of the window.
The vertical position knob controls the vertical displaypositionof the signal.
When you turn the vertical position knob, the sign indicating the. GROUND channel
will move up and down with the waveform.
(2) User should see the waveform will move vertically upward and downward when
the knob is rotating.
(3) User can also change the waveform scale by rotating the Scale Knob on the
vertical system. Please notice that the “V/div” will be changed to indicate the
corresponding vertical scale level.
(4) User can enable/disable the input channel by pressing the CH1 and CH2 button
on the vertical system.
All of the other vertical system setting will be explain more on chapter II of this user
manual.
1.6 Introduction to The Horizontal System
As shown in the figure below, there is one key and two knobs within the horizontal
control area. Practices below will gradually guide you get familiar with the setting of
horizontal time base.
Figure 1-7 Horizontal Control Area on the Panel

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1. Use horizontal SEC/DIV knob to change gear position settings of horizontal time
base and observe the changes of state information. Turn horizontal SEC/DIV knob to
change “s/div” time base gear position, and you can find that corresponding changes have
taken place in the time base gear position display of corresponding channel in the status
bar.
Horizontal scanning rate steps up in the multiple of 1,2 and then 5
e.g. 1ms/div->2ms/div->5ms/div->10ms/div…. etc.
*Note: the horizontal time base range of different UTD2000 models are varies
between 2ns/div to 50s/div. Details is listed in technical specification.
2. Use horizontal POSITION knob to adjust the horizontal position of the signal in the
waveform window. Horizontal POSITION knob controls the trigger position of the input
signal. When applying to trigger position and turning horizontal POSITION knob, it is
possible to observe the horizontal movement of waveform along with POSITION knob
turning.
All of the other horizontal systemsetting will be explain more on chapter II of this user
manual.
1.7 Introduction to The Trigger System
As shown in Figure 1-11, there is one knob and three (or two) keys in trigger menu
control area. Practices below will gradually guide you to be familiar with the setting of.
Figure 1-8 Trigger Menu on the Panel
(1) Turn trigger level knob to change trigger level. Please refer to the trigger
marking on the screen to indicate the trigger level line. The trigger level line should move
up/down corresponding when turning the trigger control panel knob.
(2) Press SET TO ZERO key on the oscilloscope to enable 50% amplitude triggering;
All of the other trigger systemsetting will be explain more on chapter II of this user
manual.

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Chapter II Vertical System
Each channel for UTD2000 series DSO can be set independently through the vertical
system menu. After pressing CH1 or CH2 function key, the system shall display function
menu of CH1 or CH2 channel. See Table 2-1 below for description.
Table 2-1 Channel Menu
Function Menu Setting Description
Coupling
AC Block the DC component of input signal.
DC Pass through DC and AC components of input signal
GND Disconnect input signal
BW Limit
ON Limit bandwidth to 20MHz to reduce displayed noise.
OFF Turn off bandwidth limited
Volts/Div
Coarse Set vertical deflection factor by coarse adjustment based on 1-2-5 scale.
Fine
Rough adjustment setting range is further subdivided for fine adjustments to improve
vertical resolution.
Probe
1×
10×
100×
1000×
Please set the probe compensation system ratio to match the probe attenuation
coefficient of the probe to be used.
Invert
ON Activate reverse function of waveform. Waveform will be displayed reversely
OFF Waveform is displayed normally.
2.1 Setting coupling channel
You will be learning through the following example to change the coupling of the input
channel. If the measured signal connect to the CH1 channel is a sinusoidal signal
containing DC component. If your press F1 to select as AC coupling, to set the CH1 into
AC coupling mode. Then the DC component of the measured signal is blocked. Waveform
display is shown in figure below.
Figure 2-1 Blocked DC Component of Signal
If you press F1 to select as DC coupling, setting the CH1 to DC coupling mode. You
should be able to see both the DC and AC components of measured signals at CH1
channel as shown in figure below.

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Figure 2-2 Simultaneous Display of Signal DC and AC Components
If you Press F1 to select as GND, to set CH1 to connect to the internal ground of the
instrument, both DC and AC components of the input signal are blocked. And, waveform
display is shown in figure below.
(Note: although no waveform is displayed on the screen in this mode, input signal is
still connected with channel circuit.)
Figure 2-3 Simultaneous Blocking of Signal DC and AC Components
2.2 Setting channel bandwidth Limited
You will be learning through the following example to change the bandwidth limited of
the input channel. Assuming that the input signal is a 40MHz sinusoidal signal connect to
CH1. If you press F2 to set BW Limit as OFF, there will be not any bandwidth limited to
CH1. And, you can see all the high-frequency component in measured signal as
waveform displayed is shown in the figure below.

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Figure 2-4 Waveform Display When Setting Bandwidth throttling in OFF Position
If you press F2 again to set the BW Limit as ON, the noises or high-frequency
component over 20MHz in measured signal shall be attenuated, as waveform display
shown in figure below.
Figure 2-5 Waveform Display When Setting Bandwidth throttling as ON
2.3 Setting probe Rate
In order to cooperate with attenuation coefficient setting of probe, it is required to set
the probe attenuation coefficient in channel function menu. If the probe attenuation
coefficient is 10:1, the probe coefficient in channel function menu shall be set to be 10×
and vice-versa.
BW Limit ON
BW Limit Mark

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Figure 2-6 Probe Attenuation Coefficient Setting in Channel Menu
2.4 Vertical Volts/Div adjustment setting
Adjustments of vertical deflection factor V/div gear position can be set to coarse
adjustment and fine adjustment by pressing F3 function key.
Coarse adjustment, V/div can be adjusted in step ofmultiple of 1,2 and 5,
e.g. 10mV/div->20mV/div ->50mV/div…. etc.
Fine adjustments refer to changing deflection factor with smaller stepping within the
current vertical gear position range.
Figure 2-7 Coarse and Fine Adjustment of Vertical Deflection Factors
2.5 Settings of waveform inverting
Waveform inverting can be set by F5 function button. The measured input signal will
be display with 180 degrees difference (Vertically invert) if the Waveform inverting is ON.
Please see Figure 2-8 for a non-inverted waveform and Figure 2-9 for an inverted
waveform.

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Figure 2-8 Vertical Channel Inverted Settings (Invert: OFF)
Figure 2-9 Vertical Channel Inverted Settings (Invert: ON)
2.6 Mathematical operation function
UTD2000 series DSO support mathematical operation function for the input signals.
Figure below show the match result for CH1 + CH2 as example.
Figure 2-10 Math Operation