UNI-T UTD2072CL Dual Channel Digital Oscilloscope User Manual
- June 9, 2024
- UNI-T
Table of Contents
UTD2072CL Dual Channel Digital Oscilloscope
UTD2000 Series Digital Oscilloscope
User Manual
www.uni-trend.com.cn
UTD2000 Series User Manual
Preface
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 and Declaration
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 -20210816-V3.00
Statement
UNI-T products are protected by patent rights in China and other countries,
including issued and pending patents.
UNI-T reserves the rights to any product specification and pricing changes.
UNI-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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UTD2000 Series 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. 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 UNIT 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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UTD2000 Series User Manual
General Safety Overview
This instrument strictly complies with the safety requirements for electronic
measuring instrument 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. If the equipment is used in a manner not
specified by manufacturer, the protection provided by the equipment may be
impaired
Only trained personnel can perform the maintenance program. Avoid fire and
personal injury: Use the correct power line: Only use the dedicated UNI-T
power supply appointed to
the local region or country for this product. The rating shall not be lower
than the rating requirements.
Mains supply cord set specification
Applicable area Type
Rating
Standard
For EU
Plug Cord
AC 250V, 10A 3X0.75mm², 300V,105°C
IEC 60779
Connector AC 250V, 10A
For US and CAN
Plug Cord
AC 125V,10A 3X18AWG, 300V,105°C
UL 498
Connector AC 125V,10A
Correct Plug: Don’t plug when the probe or test wire is connected to the
voltage source. Ground 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. Safety considerations, When measuring
dangerous voltage, wear protective equipment, such as insulating gloves, and
keep away from others. Correct connection of oscilloscope probe: Ensure that
the probe ground and ground potential are correctly connected. Do not connect
ground wire to high voltage. Must use impedance not less than 1 M Probe. Check
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. Do not use
beyond the range. Do not open the case cover or front panel during operation.
Only use fuses with ratings listed in the technical index. Avoid circuit
exposure: Do not touch exposed connectors and components after power
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UTD2000 Series User Manual is connected. Do 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. Instructions not to
position the equipment so that it is difficult to operate the disconnecting
device Maintain proper ventilation. Do not used to measure MAINS CIRCUIT.
Before each use verify tester operation by measuring a known voltage. Please
do not operate the product in humid conditions. Please do not operate in
inflammable and explosive environment. Please keep the product surface clean
and dry Radio frequency magnetic field: CS: The product was tested per EN
61000-4-6, interference signal amplitude is 3V, frequency is beween 150kHz to
80MHz. The waveform will be affected with interference signal, and return to
normal after removing it. RS: The product was tested per EN
61000-4-3interference signal is under below situation: 1Amplitude=3V,
Frequency is beween 80MHz to 1GHz and 1.4GHz to 2GHz2 Amplitude=1V, Frequency
is beween 2GHz to 2.7GHz; The waveform will be affected with interference
signal, and return to normal after removing it.
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UTD2000 Series User Manual
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:
Symbol
Description
Direct current
Alternating current
Earth (ground) TERMINAL
PROTECTIVE CONDUCTOR TERMINAL
Caution, possibility of electric shock
Warning or Caution
Frame or chassis TERMINAL Comply with European Union standards
Conforms to UL STD 61010-1, 61010-2-030, Certified to CSA STD C22.2 No.
61010-1, 61010-2-030.
Do not place equipment and its accessories in the trash. Items must be
properly disposed of in accordance with local regulations.
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UTD2000 Series User Manual
Preface
The Manual introduces information related to operation of digital storage
oscilloscope of UTD2000 series user manual. The Manual comprises 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 9 models:
Series
Model
Band Width
Sampling Rate
UTD2052CL+
50MHz
500MS/s
UTD2072CL
70MHz
500MS/s
UTD2102CL+
100MHz
500MS/s
UTD2102CL PRO 100MHz
500MS/s
UTD2000
UTD2152CL
150MHz
500MS/s
UTD2102CEX+ 100MHz
1GS/s
UTD2152CEX
150MHz
1GS/s
UTD2202 PRO 200MHz
1GS/s
UTD2202CEX+ 200MHz
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. Users may 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
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UTD2000 Series User Manual
powerful functions required for faster completion of measurement tasks. User
can observe faster signals on UTD200 series DSO by high-speed real time
sampling and equivalent sampling. Clear LCD and mathematical operation
functions make it easier for users to observe and analyze 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.
Two analog channels. High resolution LCD display 800×480 resolution. Support
plug and play USB storage equipment or be capable of communicating with
computer via USB storage equipment. Automatic waveform and state settings
Waveform saving and replay feature Delicate window extension function and
precise analysis on waveform details and
overview Automatic measurement of 34 waveform parameters Automatic cursor
tracking measurement function Unique functions of waveform recording and
playback. Built-in FFT software function Multi-waveform mathematical operation
function (including: addition, subtraction,
multiplication and division) Edge, Video, Slope, Pulse width, Alternating
trigger and other functions Multi-language menu selection Help Information in
Mutil-language.
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UTD2000 Series User Manual
Contents
Guaranty and Declaration……………………………………………………………………………………….2 General Safety
Overview………………………………………………………………………………………..4 Safety Terms and
Symbols……………………………………………………………………………………..6 Preface.
………………………………………………………………………………………………………………7 Contents
………………………………………………………………………………………………………………. 9 Chapter I
Introductions………………………………………………………………………………………. 11
1.1 General Inspection ………………………………………………………………………………….. 11 1.2 Function
Inspection …………………………………………………………………………………. 11 1.3 Front and Rear Panel
……………………………………………………………………………….12 1.4 Display
……………………………………………………………………………………………………13 1.5 Automatic Settings of Waveform
Display …………………………………………………….14 1.6 Introduction to The Vertical System
……………………………………………………………14 1.7 Introduction to The Horizontal System
………………………………………………………..15 1.8 Introduction to The Trigger System
…………………………………………………………….16 Chapter II Vertical
System…………………………………………………………………………………..17 2.1 Setting coupling channel
…………………………………………………………………………..17 2.2 Setting channel bandwidth Limited
…………………………………………………………….18 2.3 Setting probe
Rate……………………………………………………………………………………19 2.4 Vertical Volts/Div adjustment
setting …………………………………………………………..19 2.5 Settings of waveform inverting
…………………………………………………………………..20 2.6 Mathematical operation function
………………………………………………………………..21 2.7 FFT spectral analysis
……………………………………………………………………………….21 Chapter III Horizontal System
……………………………………………………………………………..24 3.1 Horizontal
control……………………………………………………………………………………..24 3.2 Explanation of
nouns………………………………………………………………………………..24 3.3 Window extension
……………………………………………………………………………………25 3.4 Trigger hold-off time
adjustment…………………………………………………………………25 Chapter IV Trigger
System………………………………………………………………………………….27 4.1 Edge trigger
…………………………………………………………………………………………….27 4.2 Pulse width trigger
……………………………………………………………………………………28 4.3 Video trigger
……………………………………………………………………………………………30 4.4 Alternating trigger
…………………………………………………………………………………….31 4.6 Explanation of
nouns………………………………………………………………………………..33 Chapter V Acquire
System………………………………………………………………………………….35 Chapter VI Display System
…………………………………………………………………………………37 6.1 XY Mode
…………………………………………………………………………………………………37 Chapter VII Measurement Parameters
…………………………………………………………………38 7.1 Measurement
Menu………………………………………………………………………………….38
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UTD2000 Series User Manual
7.2 Voltage Parameter……………………………………………………………………………………38 7.3 Time parameter
……………………………………………………………………………………….39 Chapter VIII Cursor Measurement
……………………………………………………………………….41 Chapter IX Storage and Load System
………………………………………………………………….41 9.1 Setup storage and load
…………………………………………………………………………….43 9.2 Waveform storage and load
………………………………………………………………………44 9.3 Bit map storage and load
………………………………………………………………………….45 9.4 Screen
copy…………………………………………………………………………………………….45 Chapter X Utility System
…………………………………………………………………………………….46 10.1 Pass/Fail
……………………………………………………………………………………………….47 10.2
Recorder……………………………………………………………………………………………….48 Chapter XI Other funtion
botton …………………………………………………………………………..50 11.1 AUTO
……………………………………………………………………………………………………50 11.2 RUN/STOP
……………………………………………………………………………………………50 11.3 Help
Menu……………………………………………………………………………………………..51 11.4 Upgrade
program……………………………………………………………………………………51 Chapter XII Applicaion
example…………………………………………………………………………..52 Example 1: Measuring simple
signals………………………………………………………………52 Example 2: Observing the delay caused by a
sine wave signal passes through the circuit
…………………………………………………………………………………………………………..52 Example 3: Acquiring single
signals…………………………………………………………………53 Example 4: Reducing random noise of
signals………………………………………………….54 Example 5: Using the cursors for
measurement………………………………………………..55 Chapter XIII System Prompts and Trouble-
shooting ………………………………………………57 13.1 Definitions of System Prompts
…………………………………………………………………57 13.2
Troubleshooting……………………………………………………………………………………..57 Chapter XIV Technical
Information ………………………………………………………………………59 Chapter XV
Appendix…………………………………………………………………………………………64 Appendix A Accessories of UTD2000
Series …………………………………………………….64 Appendix B Maintenance and Cleaning
……………………………………………………………64 Appendix C
Warranty……………………………………………………………………………………..64 Appendix D Contact Us
………………………………………………………………………………….65
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UTD2000 Series User Manual
Chapter I Introduction
This chapter introduces what users should pay attention to, front & rear
panels, user interface and instruction of built-in system when using UTD 2000
series DSO first time.
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 severe damages to
packing box or foamed plastic mat, you should replace immediately. (2)
Accessories inspection For provided accessories details, description has been
made in annex A “Accessories” 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.
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 power supply voltage range is from 100 VAC to 240 VAC, the
frequency range is 50/60Hz. Connect the oscilloscope to the power supply line
that comes with the oscilloscope or any power supply line that meets the host
country standards. Press the power switch button on the top of the
oscilloscope.
(2) Switch on the instrument and Check: Press the power switch button , the
oscilloscope then will show a boot animation, and it will enter the normal
interface afterwards.
(3) DSO accessing to signal Connect the probe BNC terminal to the BNC of
channel 1 of DSO, connect the probe to “Probe Compensation Signal Tip”,
connect the alligator clip of probe to the “Ground Terminal”. The output of
the probe compensation signal tip is: the range is about 3Vpp, the
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frequency defaults at 1kHz.
UTD2000 Series User Manual
Probe Compensation Siganl Tip Ground Terminal
(4) Function Check Press AUTO (auto setting) button, square wave appears on
the display screen, the wave range is about 3Vpp and the frequency is 1kHz. Go
back to step 3 and check other channels in a same way. If the actual displayed
waveform is different from above figure, please go to next step “Probe
Compensation”.
(5) 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:
Set the probe menu attenuation coefficient as 10×, place the switch on the
probe at 10× and connect DSO probe with CH1. If hook-shape head of probe is
used, please make sure that it contacts the probe. Connect the probe to the
probe compensator of DSO, connect the grounding clamp to the “Grounding
terminal” of probe compensator, turn on CH1 and press AUTO.
Observe displayed waveform
Over-compensation Correct compensation Under-compensation
Figure 1-5 Probe Compensation and Correction
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 above figure.
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UTD2000 Series User Manual
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.
1.3 Front and Rear Panel
Display area
Control Menu button Multifunctional Knob
Function menu button
Horizontal control
Trigger control
Probe compensator and grounding interface
USB host interface
Analog channel input Vertical control
Figure 1-3 Front Panel
USB Device LAN Pass Test Output
Figure 1-4 Rear Panel
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UTD2000 Series User Manual
1.4 Display (1) Display description
Main time base setting Horizontal trigger area Time of center scale line
Trigger state display Channel 1 mark
Soft button menu corresponds to different buttons
Channel 2 mark
Waveform display window
Vertical scale coefficient of channel
(2) Soft button Press any soft button to activate corresponding menu. Symbols
below may display on the menu:
: There is next menu.
: There is dropdown memu.
: The menu has two options. : User can adjust by multifunctional knob. : Press
this menu to pop up virtual digital keypad.
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. For automatic setting application, the
frequency of the measured signal is required to be 20Hz. 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
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UTD2000 Series User Manual
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) Vertical POSITION: vertical position knob, user can change the current vertical position
of channel waveform, the vertical position value
will display on the
baseline cursor area. Press this knob to get the dispayed channel position back to the
vertical center.
If the coupling mode of channel is DC, user can fast measure the DC component
of signal by observing the difference between waveform and signal ground.
If the coupling mode of channel is AC, the DC component in the signal will be
filtered, which helps to display AC component of signal with higher sensitivity.
(2) Vertical SCALE: Change vertical setting and observe the change of status information.
User can confirm any change of vertical scale level by the information displayed on the
status bar. Rotate the vertical scale knob to change the vertical scale level of
“VOLTS/DIV”, and then the scale level of channel on the stauts bar will be changed accordingly. Press CH1, CH2, MATH to display operation menu, symbols, waveform
and scale level status of corresponding channels. Double click CH1, CH2, MATH to
turn off the channel.
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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UTD2000 Series User Manual
1. Use horizontal SCALE knob to change gear position settings of horizontal
time base and observe the changes of state information. Turn horizontal SCALE
knob to change “SEC/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 from 2ns to 50s. 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. 3. Press HORI MENU to enter Zoom menu. On this menu, press F1 to
turn on time extension, press F1 again to turn off time extention and go back
to main time base. Users can also set trigger holdoff time on this menu.
1.7 Introduction to the Trigger System As shown in Figure 1-8, there is one
knob and four keys in trigger menu control area. Practices below will
gradually guide you to be familiar with the setting.
Figure 1-8 Trigger Control Area and Trigger Menu on the Panel
(1) Turn trigger level knob LEVEL 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 accordingly. The trigger level value will
change accordingly. (2) Press TRIG MENU to change the trigger setting.
Press F1 to select “Edge” trigger. Press F2 to select CH1 for “Source”. Press
F3 to select AC for “Trigger coupling”. Press F4 to select AUTO for “Trigger
mode”. Press F5 to select RISING for “Slope type”. (3) Press SET TO ZERO to
set vertical and horizontal position of waveform to zero, then the position of
trigger level will be on the vertical center of the range of trigger signal.
(4) Press DEFAULT to display “Factory Setting” window, press SELECT to execute
factory setting, press MENU to stop factory setting and close the window. (5)
Press HELP to display “HELP” window, press HELP again to close the window.
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UTD2000 Series User Manual
Chapter II Vertical System
UTD2000 series DSO provides two analog input channels, each channel has an
independent vertical menu. 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 (Page 1)
Function Menu Setting Description
AC
Block the DC component of input signal.
Coupling
DC
Pass through DC and AC components of input signal.
BW Limit
GND 20MHz Full BW
Display grounding level (Input signal is not disconnected). Limit bandwidth to 20MHz to reduce high-frequency component of detected signal. Turn off bandwidth limit, the DSO runs through full bandwidth.
Volts/Div
Coarse Fine
Set vertical scale of current channel based on 1-2-5 scale. Fine Volts/Div is within the range of coarse Volts/Div setting, set the vertical scale of current channel based on 1% step of current Volts/Div scale.
0.01×
Probe
0.02× … 100× 1000×
Based on probe attenuation coefficient, you select a value to ensure the consistency of vertical scale reading and actual displayed waveform so that you don’t need to calculate by multiplying the probe attenuation coefficient.
Next page
—-
Go to next page
Invert
ON OFF
Activate reverse function of waveform. Waveform will be displayed reversely. Waveform is displayed normally.
Function Menu Invert
Unit Back to
Setting OFF ON V,A —-
Table 2-2 Channel Menu (Page 2)
Description Display normal waveform Display waveform invert Display the unit
of current channel range Go back to previous page
2.1 Setting coupling channel If the measured signal connected 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.
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UTD2000 Series User Manual
Figure 2-1 Blocked DC Component of Signal Press F1 to select as DC coupling,
you should be able to see both the DC and AC components of measured signals at
CH1 channel as shown in figure below.
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.
Figure 2-3 Simultaneous Blocking of Signal DC and AC Components 2.2 Setting
channel bandwidth Limit Assuming that the input signal is a 40MHz sinusoidal
signal connected to CH1. Press CH1 and then press F2 to set BW Limit as Full
Bandwidth, the channel bandwidth becomes full bandwidth, there will be not any
bandwidth limited to CH1. And, you can see all the highfrequency component in
measured signal as waveform displayed is shown in the figure below.
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UTD2000 Series User Manual
Figure 2-4 Waveform Display When Setting Bandwidth Limit as OFF Press F2 to
set the BW Limit as 20MHz, the noises or high-frequency component over 20MHz
in measured signal shall be attenuated, waveform display shown in figure
below.
BW Limit Mark
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 viceversa.
Figure 2-6 Probe Attenuation Coefficient Setting in Channel Menu 2.4 Vertical
Volts/Div adjustment setting
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UTD2000 Series User Manual Adjustments of vertical deflection factor V/div
gear position can be set to coarse adjustment and fine adjustment. For coarse
adjustment, V/div can be adjusted in step of multiple of 1, 2 and 5, the V/div
range is 1mV/div20V/div. Fine adjustments refer to changing deflection factor
with smaller stepping within the current vertical gear position range.
Vertical deflection factor can be consecutively adjusted within all vertical
gears.
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 displayed with 180 degrees
difference. Please see Figure 2-8 for a non-inverted waveform and Figure 2-9
for an inverted waveform.
Figure 2-8 Vertical Channel Inverted Settings (Invert: OFF)
Figure 2-9 Vertical Channel Inverted Settings (Invert: ON)
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UTD2000 Series User Manual
2.6 Unit Press UNIT to set the unit as “V” or “A”, the default unit is V.
After the unit is set, the unit on channel status tag will change accordingly.
2.7 Mathematical operation function Display results of CH1 & CH2 waveform
mathematic operation (+×÷).
Figure 2-10 Math Operation
Function Menu
Table 2-3Math Menu
Setting Description
Type
Math Mathematic operation (+×÷)
Source1
CH1 CH2
You can select signal source1 as CH1 You can select signal source2 as CH2
Source1+Source2
Operator
Source1Source2
×
Source1×Source2
÷
Source1÷Source2
Source2
CH1 CH2
You can select signal source1 as CH1 You can select signal source2 as CH2
2.8 FFT spectral analysis
Enter FFT (fast fourier transform) operation, the time domain (YT) signal can be converted
into frequency domain signal. At FFT operation, it is convenient to observe signals of the
following types:
Measure harmonic content and distortion in the system
Display noise characteristic in DC power supply
Analyze vibration
Table 2-4FFT Menu Description
Function Menu Setting
Description
Type
FFT
FFT mathematical operation
Source
CH1
You can select signal source as
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UTD2000 Series User Manual
Window Vertical unit
CH2 Hanning Hamming Blackman Rectangle Vrms dBVrms
CH1 or CH2
Set to select Hanning, Hamming, Blackman, or Rectangle window function
Set vertical units as Vrms or dBVrms
Select FFT window
Assuming that YT waveform is continuously repeated, DSO shall conduct FFT
conversion for time record with finite length. In this case, when the cycle is
an integer, YT waveforms are of the same amplitude at the starting and ending
positions, without interrupting. However, if the cycle of YT waveform is not
an integer, the waveform amplitudes shall be different at starting and ending
positions. Therefore, high-frequency transient interruption shall occur at the
joints. In frequency domain, this effect is called leakage. Therefore, in
order to avoid the generation of leakage, by multiplying original waveform by
a window function, the value at forced starting and ending positions is 0. See
the table below for window function application:
Table 2-5FFT window function
FFT Window Features
The most suitable measurement content
Signal levels, before and after transient state or
The best frequency resolution and the worst short pulse, are basically equal. Constant
Rectangle
amplitude resolution. It is basically similar to amplitude sinusoid with very similar frequency
the condition without window.
possesses bandwidth random noise with slow
spectrum change.
Compared with rectangular window, it has
Hanning
better frequency resolution and worse Random noise of sine, cycle and narrow- band.
amplitude resolution.
Hamming
The frequency resolution of Hamming window Signal levels, before and after transient state or
is slightly superior to Hanning window.
short pulse, are of large difference.
Blackman
The best amplitude resolution and the worst Mainly used for single frequency signal seeking
frequency resolution.
for higher subharmonic.
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2.9 Digital Filter Filter the frequency of specified waveband in signals by
adjusting upper/lower frequency limit.
Table 2-6 Digital Fiter Menu
Function menu
Setting
Description
Type
Digital filter
Digital filter
Source
CH1 CH2
Set CH1 as operation waveform Set CH2 as operation waveform
Filter type
Low pass High pass
Only when the signal frequency is lower than current upper frequency limit can
the signal pass through.
Only when the signal frequency is higer than current upper frequency limit can
the signal pass through.
Band pass
Only when the signal frequency is higher than current lower frequency limit and lower than current upper frequency limit can the sigal pass through.
Band stop
Only when the signal frequency is lower than current lower frequency limit or higher than current upper frequency limit can the sigal pass through.
Lower frequency limit
Lower limit
Adjust lower frequency limit through multifunctional knob, for low pass filter, lower frequency limit is invalid, the menu is hidden.
Upper frequency limit
Upper limit
Adjust lower frequency limit through multifunctional knob, for high pass filter, lower frequency limit is invalid, the menu is hidden.
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UTD2000 Series User Manual
Chapter III Horizontal System
3.1 Horizontal control
(1) Horizontal control knob Change the horizontal time-base scale through SCALE knob, changing of horizontal scale can lead to expansion or shrink of waveforms relative to screen center. The horizontal system can be controlled by the following panel buttons/knobs.
Change the horizontal position of waveform on the screen through POSITION, when the horizontal position is changing, the position relative to the waveform trigger point will move right and left. (2) Horizontal menu button Press HORI MENU to enter the horizontal menu function. (See table below)
Table 3-1 HORI MENU
Function Menu Setting
Description
Window extension On/off
Press to turn on the main time base
Time base selection
Main time base/extensive time base
Main time base: set as main time base, the main time base will change when adjusting horizontal time base. Extension time base: set as extension time base, the extension time base will change when adjusting horizontal time base.
Window extension —-
Press to turn on the extension time base
Hold off time
To adjust the trigger hold-off time by multi-purpose knob
3.2 Explanation of nouns YT ModeIn this mode, the Y axis represents the amount of voltage, and the X axis represents the amount of time. XY ModeIn this mode, the X axis represents the CH1 voltage amount, and the Y axis represents the CH2 voltage amount. Scan ModeWhen the horizontal time base control is set at 100ms/div or slower, the instrument enters the slow scan sampling mode. When using the slow scan mode to observe low frequency signals, it is recommended to set the channel coupling to DC. SEV/DIVHorizontal scale (time base) units, such as waveform sampling is stopped (using the RUN/STOP button), and the time base control expands or compresses the waveform.
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3.3 Window extension Extension window is used to enlarge the waveform so that
users view the image details. The setting of window extension shall not be
slower than that of main time base.
Waveform horizontal extension part
Extensive time base
Main time base
Waveform horizontal extension part
Figure 3-2 Screen Display under Window Extension Under Window extension time
base, there are two display areas, as shown in the figure above. The original
waveform is displayed in the upper part, this area can be moved left and right
by turning horizontal POSITION knob or can be enlarged and reduced by turning
the horizontal SCALE knob. The lower part is the waveform that has been
extended horizontally from selected original waveform area. What users should
pay attention is that the extension time base enhances the resolution compared
with main time base (as shown in the figure above). Because the displayed
lower-part waveform corresponds to the selected upper-part area, so the
extension time base can be enhanced by rotating the horizontal SCALE, in other
words, it enhances the horizontal extension multiples of waveform. 3.4 XY Mode
XY Mode is also called Lissajous Figure Mode. By using the Lissajous method,
users can measure the phase difference of two signals with same frequency. As
shown in the figure below:
Figure 3-3 Lissajous-Figure
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According to sin =A/B or C/D, is the angle difference of channels, the
definition of A, B, C, D is shown in figure above, so the angle difference is:
=±arcsin (A/B) or =±arcsin (C/D). If the elliptical axis lies on I, III
quadrant, then the phase difference of angle should lie on I, IV quadrant,
that is within (0/2) or (3/22). If the elliptical axis lies on IIIV quadrant,
the phase difference of angle should be within (/2) or (3/2). Additonally,
users can also figure out the frequency and phase relation between two signals
according to Lissajous figures below:
Figure 3-4 Common Lissajous Figures Only when CH1 and CH2 are used
simultaneously can this method be adopted. After selecting XY display mode,
CH1 volatage is displayed on horizontal axis and CH2 voltage is displayed on
vertical voltage.
Figure 3-5 Waveform Display under XY Mode Note: To ensure a better dispay
effect of lissajous figures, the waveform display under XY mode has a complete
cycle at least. Below functions in XY display mode are ineffective.
Cursor Measurement Mode Reference or Mathematical Operation Waveform Window
Extension Function Trigger Control
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UTD2000 Series User Manual
Chapter IV Trigger System
When to collect data and display waveform depends on the trigger system. The
DSO will convert the unstable displays into meaningful waveform after the
trigger is set correctly. When the DSO start collecting data, it will firstly
collect enough data to draw a waveform on the left of trigger. DSO will
consecutively collect data while it waits the occurrence of trigger condition.
After the trigger is detected, DSO consecutively collect enough data to draw a
waveform on the left of trigger. The trigger control area of DSO operation
panel includes: LEVEL knob: Trigger level adjustment knob, set the
corresponding voltage value of trigger point. SET TO ZERO: Set the trigger
level to the vertical center of trigger signal range. TRIG MENU: Trigger
setting menu button.
Trigger Control Trigger Type: Edge, pulse, video, slope and alternating trigger. Edge Trigger: When the edge of trigger signal satisfies a certain set level, the trigger starts. Pulse Width Trigger: When the pulse width of the trigger signal satisfies a certain set condition, the trigger starts. Video Trigger: Conduct field or line trigger for standard video signal. Slope Trigger: When the rising/descending slope of signal meets with the set value, the trigger starts. Alternating Trigger: CH1 and CH2 trigger their own signals alternatively, applicable to trigger signals without frequency correlation.
4.1 Edge trigger
Edge trigger mode refers to triggering of trigger threshold on the input signal edge. When selecting “edge trigger”, trigger on the rising edge or falling edge of input signal shall be completed.
Table 4-1 Edge trigger menu
Function Menu Setting
Description
Type
Edge
CH1
Set CH1 as the triggering signal source.
Source
CH2
Set CH2 as the triggering signal source.
EXT
Set external trigger input channel as the triggering signal source.
Slope
AC Line Rising Falling Rise/fall
Set AC power line as trigger source. Set trigger on the signal rising edge. Set trigger on the signal falling edge. Set trigger on the signal both rising and falling edge.
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Mode Coupling
AUTO
Normal
Single AC DC HF LF Noise
Set to automatic trigger. The DSO will continuously perform data acquisition
without triggering signal.
Set to normal trigger. The DSO will only perform data acquisition when there
is triggering signal. Set to single trigger. The DSO will only perform 1 cycle
of the data acquisition when there is triggering signal. Block the DC
component of triggering signal. Pass through DC and AC components of
triggering signal Reject high-frequency component of the triggering signal
(over 80kHz signals). Reject low-frequency component of the triggering signal
(below 80kHz signals). Reject high-frequency noise, reduce the probability of
mis-triggering.
4.2 Pulse width trigger For pulse width trigger, the trigger time shall be
subject to pulse width of the triggering signal. You can capture abnormal
pulse by setting pulse width conditions.
Table 4-2 Pulse width trigger menu
Function Menu Setting
Description
Type
Pluse
CH1
Set CH1 as the triggering signal source
Source
CH2 EXT
Set CH2 as the triggering signal source Set external trigger input channel as the triggering signal source
AC Line
Set AC power line as trigger source
AC
Block the DC component of triggering signal.
DC
Pass through DC and AC components of triggering signal
HF Trigger coupling
Reject high-frequency component of the triggering signal (over 80kHz signals).
Reject low-frequency component of the triggering signal (below 80kHz LF
signals).
Noise
Trigger mode
Pulse width setting
AUTO
Normal Single
Reject high-frequency noise, reduce the probability of mis-triggering. When
there is no signal input, the system will automatically collect waveform data
and the scan base line will be displayed on the screen. When there is signal
input, the system will automatically switch to trigger scan. Stop collecting
data when there is no trigger signal, the system will conduct trigger scan
when the trigger signal generates. The DSO will only perform 1 cycle of
triggering when there is triggering signal.
Enter pulse setting menu
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Function Menu Polarity
Setting Positive Negative
Table 4-3 Pulse width setting menu
Description Set the positive pulse width as trigger signal Set the negative
pulse width as trigger signal
Pulse width condition
Pulse width time Previous
Trigger when pulse width is greater than the set value
<
Trigger when pulse width is less than the set value
<>Trigger when pulse width is in the range of set value.
The pulse width is set at 20ns10s, adjust the time through multifunctional knob on the front panel. Go to previous page
4.3 Slope trigger
After the slope trigger is selected, DSO generates a trigger when the rising/descending slope of signal.
Table 4-4 Slope trigger menu
Function Menu
Setting
Description
Type
Slope
Source
CH1 CH2
Set CH1 as trigger signal. Set CH2 as trigger signal.
Trigger coupling
AC HF Noise
Block the DC components of insput signals. Hold off the high-frequency components (over 80kHz) of the signal. Hold off the high-frequency noise of the signal to reduce the probability of mistrigger.
AUTO
Trigger mode
Normal
When there is no signal input, the system will automatically collect waveform
data and the scan base line will be displayed on the screen. When there is
signal input, the system will automatically switch to trigger scan.
Stop collecting data when there is no trigger signal, the system will conduct
trigger scan when the trigger signal generates.
Single
The DSO will only perform 1 cycle of triggering when there is triggering signal.
Slope setting
Enter slope setting menu
Function Menu Slope condition
Setting Rising >
Table 4-5 Slope setting menu
Description
The DSO generates a trigger when the slew rate of rising edge of signal is
higher than the specified slew rate.
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Rising < Rising <> Descending > Descending < Descending <> Time setting
Threshold
High level Low level High-low level
Previous
The DSO generates a trigger when the slew rate of rising edge of signal is
lower than the specified slew rate.
The DSO generates a trigger when the slew rate of rising edge of signal is
higher than the specified lower-limit slew rate and lower than the specified
upper-limit slew rate.
The DSO generates a trigger when the slew rate of descending edge of signal is
higher than the specified slew rate.
The DSO generates a trigger when the slew rate of descending edge of signal is
lower than the specified slew rate.
The DSO generates a trigger when the slew rate of descending edge of signal is
higher than the specified lower-limit slew rate and lower than the specified
upper-limit slew rate. The slope time is set at 20ns10s, adjust the time
through the multifunctional knob on front panel. Adjust high-level threshold
of slope trigger through the LEVEL knob on trigger control area. Adjust low-
level threshold of slope trigger through the LEVEL knob on trigger control
area. Through the LEVEL knob on trigger control area, adjust high-level &
lowl-level threshold of slope trigger at the same time. Go to previous page
4.4 Video trigger
After the video trigger is selected, the DSO generates a trigger on the field or line of NTSC or PAL standard video signal. Trigger coupling will be preset to DC coupling. Video trigger menus are shown in the table below:
Tabel 4-6 Video trigger menu
Function Menu
Setting
Description
Type
Viedo
Source
CH1 CH2
Set CH1 as the triggering signal source Set CH2 as the triggering signal source
Video Setting
Enter video setting menu
Function Menu Standard
Setting PAL
Table 4-6 Video setting menu
Description Applicable to PAL video signal.
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NTSC All line
Sync
Line Odd field
Even field
Line numbers Previous
Applicable NTSC video signal. Set the video line to synchronous triggering. Set the video to sync and trigger on specific line, adjust through the multifunctional knob on front panel. Set the video to sync and trigger on odd field. Set the video to sync and trigger on even field. Adjust through the multifunctional knob on front panel. Go to previous page.
Figure 4-1 is an example screen display when PAL video trigger model is selected as standard and the synchronization mode is selected as line synchronization. Figure 4-2 is an example screen display when the synchronization mode is set to field synchronization.
Figure 4-1 Video Trigger: Line Synchronization
Figure 4-2 Video Trigger: Field Synchronization
4.5 Alternating trigger During alternating trigger, the trigger signal comes
from two vertical channels. Alternating trigger is useful for observing two
signals with different frequency. See the figure below for display of
triggered alternating waveform example and Table 4-7 for triggered alternating
menu setting.
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Figure 4-3 Observing Signals with Two Different Frequencies by Alternating
Trigger Mode
Table 4-7 Alternating Trigger Menu (Page 1)
Function Menu Type
Setting Alternating
Channel selection
CH1 CH2
Edge
Trigger mode Pulse width
Slope
DC
AC
HF
Coupling
LF
Noise rejection
Next page
—-
Description
Select CH1 as current channel Select CH2 as current channel Set the edge as
trigger mode Set the pulse width as trigger mode Set the slope as trigger mode
Pass through DC and AC components of triggering signal. Block the DC component
of triggering signal. Reject high-frequency component of the triggering
signal. Reject low-frequency component of the triggering signal. Suppresses
high frequency noise in the signal and reduces the probability of the
oscilloscope being falsely triggered . Go to next page
Table 4-8 Alternating Trigger Menu (Page 2)
Function Menu Slope Previous
Setting Rising Falling Rise/fall
Description Set trigger on the signal rising edge. Set trigger on the signal falling edge. Set trigger on the signal both rising and falling edge. Go to previous page.
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4.6 Trigger Holdoff
Trigger holdoff time adjustment is used to observe complex waveform (pulse string series). Holdoff time refers to the waiting time for the DSO to restart trigger circuit. During holdoff time, the DSO will not trigger until the holdoff time is over.
Table 4-9 Trigger Holdoff Menu
Function Menu
Setting
Description
Window extension
On/off
Press to turn on the main time base.
Time base selection
Main time base/extensive time base
Main time base: set as main time base, the main time base will change when adjusting horizontal time base. Extension time base: set as extension time base, the extension time base will change when adjusting horizontal time base.
Window extension
—-
Press to turn on the extension time base.
Hold off time
To adjust the trigger hold-off time by multi-purpose knob.
Take pulse series as example, trigger the first pulse on the pulse series, then the holdoff time can be set as pulse string width. As shown in the figure below:
Figure 4-4 Snychronous complex waveform
Operation Instruction: (1) Based on the synchronization mode of normal signal,
select to trigger edge, trigger source, slope of TRIG MENU and adjust trigger
level to make the waveform stable as possible. (2) Press HORI MENU to display
horizontal menu. (3) By adjusting the multifunctional knob, the holdoff time
will be changing until the waveform is stable.
4.7 Explanation of nouns (1) Trigger source: Trigger can be achieved from
several signal sources: input channels (CH1 and CH2), external triggers (EXT)
and AC line. Input channel: The most frequently-used trigger source is input
channel (selectable). The selected channel as trigger source can operate
normally no matter its input is displayed or not.
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External trigger: This type of trigger source can be used not only in
collecting data in two channels but also in triggering the third channel at
the same time. For example, the external clock or the signal from circuit to
be measured can be served as trigger source. EXT trigger source use the
external trigger signal connected to EXT TRIG junction. EXT can directly use
the signal, the EXT can be used when the trigger level of signal ranges from
-3V to +3V. AC line trigger: It is also called Mains supply. This can be
applied to observe the signals correlated to AC line power to stabilize the
synchronization, such as the relation between lighting equipment and power
supply equipment.
(2) Trigger mode: Deciding the behavioral pattern of DSO under no trigger
conditions. Three trigger modes are provided for DSO: auto, normal and single.
Auto trigger: When there is no trigger signal, the DSO will automatically
perform data acquisition and the scan base line will be displayed on the
screen. DSO will automatically synchronize with the trigger signal when there
is trigger signal. Attention: when scanning waveform is set as 100ms/div or
slower time base, no trigger signal is allowed under “auto trigger” mode.
Normal trigger: Set to normal trigger mode. The DSO will only perform data
acquisition only when trigger conditions are satisfied. When there is no
trigger signal, DSO stops data collection. When there is trigger signal, the
scan will be triggered. Single trigger: On single trigger mode, press
“Operation” once, the DSO will enter the status of waiting trigger, when the
DSO detects a trigger, it will collect data and display the collected
waveform, and then stop.
(3) Trigger coupling: Trigger coupling decides that what kind of signal
components will be sent to trigger circuit. Coupling types include: DC, AC,
low-frequency holdoff and highfrequency holdoff.
“DC” let all components of signal pass through. “AC” block “DC” component and
attenuate signals under 10Hz. “Low-frequnecy holdoff” block DC components and
attenuate low-frequency
components under 80kHz. “High-frequency holdoff” attenuate high-frequency
component over 80kHz. “Noise holdoff” can hold off the high-frequency noise in
the signal and reduce the
probability of mis-trigger.
(4) Pretrigger/delay trigger Data collected before/after the trigger. The
trigger position is usually set in the horizontal center of the screen, 7div
or 8div pretrigger/delay information can be viewed. If you want to view more
pretrigger information, you could adjust the horizontal position of waveform
by rotating horizontal position. By observing pretrigger data, you can view
the waveform before triggering. For example, the glitch can be captured at the
moment of starting the circuit, you can find out the cause of glitch by
observing and anlyze the pretrigger data.
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UTD2000 Series User Manual
Chapter V Acquire System
As shown in the figure below, the ACQUIRE on the control area is the function
button of Acquire System.
Figure 5-1 Function Key of Acquire System Press ACQUIRE button to enter data
acquisition setting menu, set the data acquisition mode through menu control
button.
Table 5-1 Acquire Function Menu
Function Menu Setting
Description
Sampling
The DSO acquires data and reconstruct the waveform in the same time interval.
Acquisition Mode
Peak value
High resolution
Set to peak value acquisition mode. The DSO finds the maximum and minimum
value of input signal in each acquiring interval and uses these values to
display waveform.
The DSO averages the proximal point of acquired waveform to reduce random
noise of input signal and display a smoother wave on the screen.
Average
The DSO acquires some waveforms and calculate their average values, and then display the final waveform.
Averages
2~256
Set average number by using the multipurpose knob, the average number is set to 2, 4, 8, 16, 32, 64,128, 256, 512
Sampling
Real-time Set to Real-time sampling. Equivalence Set to Equivalent sampling.
Fast Acq
ON OFF
Acquire data in a way of high screen refresh rate to better reflect the dynamic effect of waveform. Turn off fast acquiring.
By changing the acquisition setting of the DSO, user can observe the wave change. Assuming that the noise in signal is strong, non-average acquisition method and average acquisition of 8 numbers are shown in the figure below:
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Figure 5-1 Non-average acquisition method Figure 5-2 Average acquisition of 8
numbers Notice: (1) Please select real-time sampling mode when observing
single signal. (2) Please select equivalent sampling mode when observing high
frequency periodic signal. (3) Please select peak detection mode when hoping
to observe the signal envelope for any modulation signal. Please select
average sampling mode when hoping to reduce the random noise in displayed
signals, and set the average number to 2, 4, 8, 16, 32, 64,128, 256, 512.
Explanation of nouns Sampling mode: Real-time sampling and equivalent sampling
Real-time sampling mode: Data sampling at the real-time sampling rate of the
system. This is used to observe any waveform within the sampling rate of the
system. Equivalent sampling mode: Data sampling at higher than maximum
sampling rate of the system. This is used to observe any periodical waveform
at beyond the maximum sampling rate. Peak value mode: DSO finds the maximum
and minimum value of input signal in each sampling interval and uses these
values to display waveform. In this mode, DSO can acquire and display narrow
pulses, otherwise these pulses may be lost in sampling mode. The noise will be
stronger in this mode. High resolution mode: The DSO averages the proximal
point of acquired waveform to reduce random noise of input signal and display
a smoother wave on the screen. Average mode: The DSO acquires some waveforms
and calculate their average values, and then display the final waveform.
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UTD2000 Series User Manual
Chapter VI Display System
As shown in the figure below, the DISPLAY on the control area is the function
button of Display System.
Figure 6-1 Function Keys of Display System
Press DISPLAY button to enter display setting menu as shown in the table below.
Table 6-1 Display Menu (Page 1)
Function
Setting Description
Types
Vector Dots
Display sampled points in connection way. Only display sampled data points.
Persistance Menu Screen protection time Next page
Set OFF, AUTO, Short persistence, Long Persistence, infinite. Set 5s, 10s,
20s, manualy. Set OFF, 1min, 5min, 10min, 30min, 1 hour.
Go to next page
Function Waveform brightness Grid brightness Backlight
Grid Previous
Setting 10%100% 10%100% 10%100%
Table 6-2 Display Menu (Page 2)
Description Set waveform brightness
Set grid brightness
Set backlight brightness
Set full grid, lattice, cross grid, frame Go to previous page
Key point: Display type: The vector will fill the blank between adjacent sampled points. The Dots only displays sampled points.
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UTD2000 Series User Manual
Chapter VII Automatic Measurement
UTD2000 series DSO support up to 34 types of waveform measurement parameters.
Figure 7-1 Function Key of Auto Measurement
7.1 Measurement Menu Press MEASURE to enter Measurement menu. Table 7-1 Automatic measurement menu (Page 1)
Function Menu Setting
Description
Main source
CH1, CH2, MATH Select CH1 or CH2 as source.
Slave source
CH1, CH2, MATH Select CH1 or CH2 as source.
All parameters
OFF ON
Close all display boxes of measurement parameters. Pop up a display box with all measurement parameters.
Custom parameter
Pop up a selection interface with custom parameters, press the multifunctional knob to display parameters. Press custom parameter key or MENU key to close the selection interface, extremum and average value will be displayed on the screen.
Next page
Go to next page
Table 7-1 Automatic measurement menu (Page 2)
Function Menu Setting
Description
Indication selection
By adjusting multifunctional knob, select the indicated parameter from 34 types of automatic measurement parameters.
Indicator
OFF ON
Turn off indicator function. Indicate the physical significance of indicator parameters.
Clear
Clear all custom parameters.
Measurement statistics
OFF ON
Turn off measurement statistics function. Turn on measurement statistics function.
Previouse page
Go to previous page.
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7.2 Voltage Parameter
UTD2000 Series User Manual
Figure 7-2 Voltage Parameter Diagram Voltage parameters of UTD2000 series DSO
include: Max value (Max): The voltage value from waveform highest level to
GND. Min value (Min): The voltage value from waveform lowest level to GND. Top
value (High): The voltage value from waveform flat top to GND. Bottom value
(Low): The voltage value from waveform bottom to GND. Middle value (Middle):
Half of the sum value of High and Low voltage value. Peak-peak value (Pk-Pk):
The voltage value from waveform highest level to waveform lowest level.
Amplitude (Amp): The voltage value from waveform top to waveform bottom. Mean
value (Mean): The average amplitude value of waveform. Cycle mean (CycMean):
The average amplitude value of waveform of one cycle. Root Mean Square (RMS):
The effective value. The converted energy based on AC signal. The DC voltage
corresponding to the generating equivalent energy, converted energy. Cycle RMS
(CycRMS): The converted energy in one cycle based on AC signal. The DC voltage
corresponding to the generating equivalent energy.
7.3 Time parameter
Figure 7-3 Timing Parameter Diagram Timing parameters of UTD2000 series DSO
include: Period (Period): The time between two consecutive and same-polarity
edges of repetitive waveform.
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UTD2000 Series User Manual
Frequency (Freq): The reciprocal of the period Rise time (Rise): The time for
waveform amplitude to rise from 10% to 90%. Fall time (Fall): The time for
waveform amplitude to fall from 90% to 10%. Rise delay: The time for main
source and slave source to delay between two rising edges Fall delay: The time
for main source and slave source to delay between two falling edges. Positive
width (+Width): The positive pulse width at 50% amplitude. Negative width
(-Width): The negative pulse width at 50% amplitude. FRFR: The time between
the first rising edge of source 1 to the first rising edge of source 2. FRFF:
The time between the first rising edge of source 1 to the first falling edge
of source 2. FFFR: The time between the the first falling edge of source 2 to
the first rising edge of source 2. FFFF: The time between the first falling
edge of source 1 to the first falling edge of source 2. FRLF: The time between
the first rising edge of source 1 to the last falling edge of source 2. FRLR:
The time between the first rising edge of source 1 to the last rising edge of
source 2. FFLR: The time between the first falling edge of source 1 to the
last rising edge of source 2. FFLF: The time between the first falling edge of
source 1 to the last falling edge of source 2.
7.4 Other parameters Positive duty (+Duty): The ratio of positive pulse width
and period. Negative duty (-Duty): The ratio of negative pulse width and
period. Over shoot (OverSht): The ratio of “Difference between max value and
high value” and “Amplitude value”. Preshoot (PreSht): The ratio of “Difference
between min value and low value” and “Amplitude value”. Area: The algebraic
sum of the product of voltage and time for all dots on the screen. Cycle Area:
The algebraic sum of the product of voltage and time for all dots in one
cycle. Phase: The phase difference of main source and slave source.
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UTD2000 Series User Manual
Chapter VIII Cursor Measurement
Use CURSOR to measure waveform X axis (time) and Y axis (voltage). Press
CURSOR to enter cursor measurement menu.
Figure 8-1 Function Key of CURSOR
8.1 Cursor measurement menu Press CURSOR to enter cursor measurement menu.
Function menu Type Mode
T unit Source
Table 8-1 cursor measurement menu
Setting
Description
OFF, time, voltage
Set measurement type
Independent mode, tracking
Select the moving mode of cursor. If independent mode is selected, only cursor 1 and cursor 2 can be moved. If tracking is selected, move cursor 1 and cursor 2 at the same time.
Second, hertz
Set the unit of time measurement
CH1, CH2, Math
Set measurement source
8.2 Cursor measurement display On CURSOR mode, user can move the cursor to
measure, there are two types: voltage and time.
Rotate the Multipurpose knob to adjust the position of AY, press Multipurpose
knob to shift cursor BY, adjust BY position with same way. Set “tracking” with
the mode, adajust Multipurpose knob, cursor AY and BY move in parallel. A,B
represent the voltage of coursor AY,BY B-A represents the voltage difference
between intersection of AY and waveform and intersection of BY and waveform.
When time is measured, the figure below displays on the top left of screen:
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Figure 8-2 Cursor measurement for time X time: Rotate Multipurpose knob to
adjust the position of AX, press Multipurpose knob to adjust BX, shit between
BX and AX with same way. A/B represents the time distance between zero point
and the cursor A/B. B-A represents the difference beween cursor A and cursor
B. 1/|B-A| represents the reciprocal of time difference. For same periodic
signal, if AX and BX locate at adjacent rising edge, 1/|B-A| equal to
frequency. Y Voltage: A/B represents the voltage distance between zero point
and the cursor A/B. B-A represents the voltage difference beween cursor A and
cursor B. When voltage is measured, the figure bleow displays on the top left
of screen:
Figure 8-2 Cursor measurement for voltage Tips: The measurement data display
on the top left corner
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UTD2000 Series User Manual
Chapter IX Storage
The DSO setting, waveform and screen image can be store in DSO or USB, the
stored setting or waveform can be recalled when needed. Press STORAGE to enter
storage setting interface.
Figure 9-1 Function Key of STORAGE
9.1 Set storage and load
Press the Storage button, then Press F1 to choose storage type Setup, and you will see the following menu.
Table 9-1 Storage setting menu
Function Menu Setting
Description
Type
Setup
Select storage type as setup.
Storgte medium
Select storage location. DSO can store 20 groups, USB can sotre 200 DSO, USB
groups.
Delete/File name
Delete: Delete the stored files. File name: The menu will change to file name when the storage medium is USB.
Save
Store the file to current designated storage location.
Load
Load the previous storage location in current designated storage location to get the DSO back to stored setting status.
Edit file name When the storage medium is USB, the stored file name can be edited, press file name to enter file name edit window, as shown in the figure below:
Figure 9-2 File name window Move the cursor by adjusting multifunctional knob,
press multifunctional knob switch to choose number or letter, press CONFIRM to
go back to previous menu.
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9.2 Waveform storage and load Press the Storage button, then press F1 to
choose storege type as Reference Waveform, and you will see the following
menu.
Table 9-2 Reference waveform menu (Page 1)
Function Menu
Setting
Description
Type
Reference The selected storage type is reference waveform.
waveform
Source
REF A REF B
Select load waveform to REF A. Select load waveform to REF B.
Close
Close the loaded waveform.
Storage
Enter storage menu.
Load
Enter load menu.
Function Menu Data source Storage medium File name Store Previous
Table 9-3 Waveform storage menu
Setting
Description
CH1/CH2 Select storage channel.
DSO, USB Select the set storage location.
Customized Please refer section 9.1 “Edit file name”.
Press the button to store.
Go to the previous page.
Function menu Reference waveform
Storage medium Load Previous
Table 9-4 Waveform load menu
Setting Description REF A Select load waveform to REF A. REF B Select load
waveform to REF B.
Select load location. Press the button to load. Go to the previous page.
Function menu Type Storage medium File name
Setting
Description
Data file
The selected storage type is data file, stored in CSV format.
USB
Data file can be stored in USB only.
Customized Please refer section 9.1 “Edit file name”.
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Storage
Press the button to store.
9.3 Bit map storage and load Press the Storage button, then press F1 to choose
storege type Data File, and you
will see the following menu. Table 9-6 Interface storage menu
Function Menu Type Storage medium
Setting Data file USB
Description The selected storage type is data file, stored in CSV format. Only when the USB is plugged into DSO can the data file be stored.
File name
Customized Please refer section 9.1 “Edit file name”.
Save
Press the button to save.
Note: Only when the USB is plugged into DSO can the data file be stored.
9.4 Screen copy Press PrtSc button, then current screen will be stored in USB in BMP format. This bitmap can be viewed on PC. Only when the USB is plugged into DSO can the bitmap be stored.
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Chapter X Utility System
Press UTILITY to enter utility menu.
Figure 10-1 Function Key of UTILITY
Table 10-1 Utility menu (Page 1)
Function menu Setting System Config See chart 10-3
Description Enter system setup menu, the operation option include self- clibration, system information and clear information.
Language
Select interface language, different languages can be selected.
Pass/Fail
See chart 10-4 Enter pass/fail menu, please see “10.1 Pass/Fail”for specific operation.
Recorder
See chart 10-5
Enter waveform recording menu, please see 10.2 Recorder”for specific operation.
Next
Go to next page.
Function menu Setting
Cymometer
OFF
ON
Local square wave
AUTO strategy
LAN setup Return
Table 10-2 Utility menu (Page 2)
Description Turn off frequency meter. Turn on frequency meter.
It can be set as 10Hz, 100Hz, 1kHz, 10kHz, it defaults at 1kHz.
Enter AUTO strategy setting, the AUTO status can be set, please refer to “10.3
AUTO strategy”for specific operation. Enter the dialog box of network setting.
Function menu Self calibration
System information Clear information Return
Table 10-3 System setup menu (Page 3)
Setting
Description
SELECT Execute self calibration function.
MENU
Leave self-calibration function.
Display DSO system information, including Model, Hardware Version, Software Version, etc. Press MENU button to close system information.
Clear the stored data in DSO.
Go to previous menu.
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10.1 Pass/Fail Pass/Fail test: Detect whether or not the input signal is in
the specified scope of template. If the input signal is within the scope, it
is PASS, while if the input signal is out of the scope, it is FAIL. Pass/Fail
interface on rear panel can output the Pass/Fail signal.
Pass/FailOuput interface on rear panel.
Press UTILITY button and then press F3 to enter Pass/Fail menu: (1) Turn on operation test, press F1 to set output condition. (2) Set the output condition, press F2 to set output condition. For fail setting, the Pass/Fail interface on rear panel will output pulse and buzz if it is FAIL. For pass setting, the Pass/Fail interface on rear panel will output pulse and buzz if it is PASS. (3) Set the source: Enter Pass/Fail menu and then press F3 to set source. (4) Display information: The screen displays test result. (5) Next page. (6) Stop setting, enter stop setting menu:
Function Menu
Setting
Stop type
Pass times Fail times
When Threshold Back
=<=
Table 10-4 Stop Setting
Description
Auto stop testing after reaching up to the PASS numbers at specified
threshold. Auto stop testing after reaching up to the FAIL numbers at
specified threshold. Set the stopping condition. Set the threshold of stopping
condition through multifunctional knob. Return to previous menu (Pass/Fail
Test Menu).
(7) Threshold setting, enter threshold setting menu:
Table 10-4 Stop Setting
Function Menu
Setting
Description
Reference CH1CH2REFA
waveform
The condition of creating template include: designated channel waveform of reference waveform, CH1 or CH2, vertical and horizontal
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UTD2000 Series User Manual
tolerance.
Load
Load the reference waveform.
Horizontal tolerance
1~255
Set horizontal tolerance of template through multifunctional knob.
Vertical tolerance
1~255
Set vertical tolerance of template through multifunctional knob.
Back
Return to previous menu (Pass/Fail Test Menu).
(8) Start the test, press F1 to conduct Pass/Fail test.
10.2 Recorder Record the current waveform frame by frame through waveform
recording function.
Table 10-6 Waveform Recording Menu
Function Menu
Setting
Description
Record button, press this button to record, the number of recorded
screen displays on the screen.
Stop recording
1, Replay button. 2, Press this button to replay, the replayed frame number displays on the screen, rotate the multifunctional knob to stop replaying, if keep rotating the knob, a particular frame of waveform will be replayed repeatedly. 3, If users need to continue replaying all, first press and then press . 4, Record 1000 frames of data at most.
Access
Only when the storage device is plugged in DSO can users use this function.
Return
Go to previous menu (Utility menu).
Function Menu File name
Table 10-6 Waveform Recording Access Menu
Setting
Description
Please refer to “Edit file name”for operating method.
Save
Store the recorded waveform file in storage device.
Load
Load the recorded file in storage device to DSO.
—-
Only when the USB is plugged into DSO can users use this function, enter next menu.
Reutrn
Return to previous menu.
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10.3 AUTO strategy As mentioned before, press AUTO button to activate the function of Waveform Auto Setting. To get a best diplay waveform, DSO automatically adjust vertical scale, horizontal time base and trigger mode based on input signals. This DSO allow users to set relevant parameters of auto setting function.
Function Menu Channel setup Sampling setup
Trigger setup Signal recognition Return
Table 10-7 AUTO strategy menu
Setting
Description
Release/Lock
Release: The channel setting is set as default after AUTO operation. Lock: The channel setting is unchanged after AUTO operation.
Release/Lock
Release: The acquiring mode automatically changes to normal sampling after AUTO operation. Lock: The acquiring mode is unchanged after AUTO operation.
Release/Lock
Release: The trigger type changes to edge after AUTO operation. Lock: The trigger type is unchanged after AUTO operation.
Release/Lock
Release: Conduct AUTO operation for channels. Lock: Conduct AUTO operation only for open channels.
Go to previous menu.
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Chapter XI Other function botton
11.1 AUTO Setting
Based on input signals, Auto Setting selects appropriate time-based scale, Volt/Divs, trigger based to display waveform on the screen automatically. Press AUTO to enter automatic setting.
AUTO Setting is only applicable to conditions below:
-
AUTO Setting is only applicable to signals with simple and single frequency. AUTO Setting is not effective for those complicated waveform.
-
The frequency of measured signal is not less than 20Hz, and the amplitude is not less than 30mVpp.
Function
Setting
Obtainment mode
Sampling
Display format
Set to YT
Horizontal position
Auto adjustment according to signal frequency.
Second/Divs
Auto adjustment according to signal frequency.
Trigger coupling
DC
Trigger holdoff
The minimum value
Trigger level
Set to 50%
Trigger mode
AUTO
Trigger source
Set to CH1. If there is no signal for CH1 and a signal is exerted on CH2, then set to CH2.
Trigger gradient
Ascending
Trigger type
Edge
Bandwidth limit
OFF
Volt/Divs
Auto adjustment according to singnal amplitude.
NOTE: When AUTO strategy is set as default, it outpus above auto setting.
11.2 RUN/STOP
RUN/STOP button is on the front panel of DSO. When this button is pressed and
a green indicator lights up, your oscilloscope is in a running status, if a
red light comes on after pressing this button, it indicates the unit has
stopped operation. In running status, the DSO consecutively collects waveform
and the screen displays “AUTO”, while in stopping status, the DSO stops
collecting waveform and the screen displays “STOP”. Press RUN/STOP to switch
between stopping and running.
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11.3 Help Menu Press the HELP key to go into help menu, then press any key
will display the help information of this key. 11.4 Upgrade program The USB
upgrade program makes upgrade easier and more flexible. To use this function,
please follow the steps below: (1) Download a program file to be updated from
internet and store the file in USB. (2) Turn off DSO and pulg USB into DSO,
then turn on DSO. (3) If only one program file is stored in USB, the interface
will display “whether or not
update”, press F3 to update. If two or more than two program files are stored
in USB, the interface of selecting files will appear, press F1 to select a
program file to be updated and press F3 to start updating. (4) When the update
is completed, a prompt of successful update will appear, please unplug the USB
and turn off the DSO, the program update is complete when you turn on the DSO
again. NOTE: (1) The update time is about 10 seconds. (2) Do not turn off the
DSO or unplug the USB when the program is upgrading, otherwise the upgrade
will fail or unpredicted error will appear. (3) Turn off the DSO if the
upgrade is FAIL. Turn on DSO again to upgrade the program.
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Chapter XII Application example
Example 1: Measuring simple signals To observe and measure an unknown circuit
signal, and to quickly display and measure the signal’s frequency and peak-to-
peak value. (1) To quickly display this signal, follow the steps below In the
probe menu, set the attenuation factor to 10X and set the switch on the probe
to 10X. Connect the CH1 probe to the circuitry point to be measured. Press
AUTO, the oscilloscope will carry out auto setup to optimise waveform display.
In this status, you can further adjust the vertical and horizontal range until
you get the desired waveform display. (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: . Press MEASURE to display auto measurement menu. . Press F4 to enter
custom parameter selection window. . Move the slection box through
multifunctional knob to peak-to- peak value and then press multifunctional
knob to complete the selection of peak-to-peak parameter. . According to step3
, move the selection box to Frequency and press multifunctional knob to
complete the selection of frequency parameter measurement. . Press F4 or MENU
to close custom parameter selection window. Peak-to-peak value and frequency
value display on the screen as shown in the figure below:
Figure 12-1 Automatic measurement
Example 2: Observing the delay caused by a sine wave signal passes through the
circuit As in the previous scenario, set the probe attenuation factor of the
probe and oscilloscope channel to 10X. Connect the CH1 to the circuit signal
input terminal. Connect CH2 to the output terminal. Steps:
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UTD2000 Series User Manual
(1) To display CH1 and CH2 signals Press AUTO. Continue to adjust the
horizontal and vertical range until you get the desired waveform
display. Press CH1 to select CH1. Adjust vertical position of the CH1 waveform
by turning the
vertical position control knob. Press CH2 to select CH2. In the same way
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. When
measuring channel delay automatically:
Press MEASURE to display the automatic measurement menu. Press F1 to set main
source as CH1. Press F2 to set slave source as CH2. Press F2 to enter custom
parameter selection window, move the selection box through multifunctional
knob to rising time, press multifunctional knob to complete the selection of
rising delay parameter measurement. Press F4 or MENU button to close custom
parameter selection window. Observe waveform changes (see the figure below).
Figure 12-2 Waveform delay
Example 3: Acquiring single signal The advantage and special feature of your
digital storage Oscilloscope lie in its ability to acquire non cyclical
signals like pulse and glitch. To acquire a single signal, you must have
transcendental knowledge of that signal to set the trigger level and trigger
edge. For example, if the pulse is a logical signal of TTL level, the trigger
level should be set at about 2V and the trigger edge should be set to rising
edge trigger. If you are not certain about the signal, you can observe it by
automatic or normal trigger to determine the trigger level and trigger edge.
Steps: (1) As in the previous illustration, set the attenuation factor of the
probe and CH1. (2) Carry out trigger setup
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Press TRIG MENU in the trigger control zone to display the trigger setup menu.
In this menu, use F1~F5 set the trigger type to EDGE, set trigger source to
CH1, set
inclination to Rising, set trigger type to Single and set trigger coupling to
AC. Adjust horizontal time base and vertical range to an appropriate range.
Turn the TRIGGER LEVEL control knob to get the desired level. Press RUN/STOP
and wait for a signal that meets the trigger condition. If any signal reaches
the set trigger level, the system will sample once and display it on the
screen. By using this function you can easily acquire any occasional event.
For example, when a relatively big amplitude of sudden glitch is acquired: set
the trigger level to just higher than the normal signal level. Press RUN/STOP
and begin waiting. When a glitch occurs, the machine will automatically
trigger and record the waveform immediately before and after triggering. By
turning the horizontal POSITION knob in the horizontal control zone on the
front panel, you can change the trigger position horizontally to achieve
negative delay trigger of various lengths for easy observation of waveform
occurring before the glitch.
Figure 12-3 Single signal Example 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 12-4 Reducing random noise of signals Steps :
(1) As in the previous illustration, set the attenuation factor of the probe
and Ch1.
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(2) Connect the signal to ensure stable display of waveform. (3) Improving
trigger by setting trigger coupling. Press TRIG MENU in the trigger zone to
display the trigger setup menu. Set trigger coupling to Low Frequency Holdoff
or High Frequency Holdoff. Low frequency holdoff is seting up a high-pass
filter. It filters low frequency signal component under 80kHz and allows high
frequency signal component to pass through. High frequency holdoff is setting
up a low-pass filter. It filters high frequency signal component over 80kHz
and allows low frequency signal component to pass through. By setting Low
Frequency Holdoff or High Frequency Holdoff, you can hold off low frequency or
high frequency noise respectively and achieve a stable trigger. (4) Reducing
display noise by setting the sampling mode. If the signal being measured is
stacked with random noise and the waveform is too coarse as a result, you can
use the average sampling 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 menu zone of the front panel to display the
sampling setup menu. Press F1 to set acquisition mode to AVERAGE, then press
F1 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)
Figure 12-5 Signal noise held off
Note: In average sampling mode, the waveform display will update at a slower
rate. This is normal.
Example 5: Using the cursors for measurement Your oscilloscope can measure 28
waveform parameters automatically. All auto parameters can be measured with
the cursors.
By using the cursors, you can quickly measure the time and voltage of a
waveform.
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UTD2000 Series User Manual Measuring one step voltage of the step signal To
measure one step voltage of the step signal, follow the steps below: 1. Press
CURSOR to display the cursor measurement menu. 2. Press menu operation key F1
to set cursor type to VOLTAGE. 3. Turn the multifunction control knob to set
cursor 1 at one step voltage of the step signal. 4. Press SELECT to select the
cursor, then turn the multifunction control knob again to set
cursor 2 at another step voltage of the step signal. The cursor menu will
automatically display the V value, i.e. the voltage difference of that point.
See the figure below.
Figure 12-6 Measure the voltage difference of signals by cursors Note: When
using the cursors to measure time, follow step 2 only and set the cursor type
to time.
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Chapter XIII System Prompts and Trouble-
shooting
13.1 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 adjustment is possible. When the vertical
deflection factor switch, time base switch, X shift, vertical shift and
trigger level adjustments have reached their ultimate limits, this prompt will
appear. USB Device Unplugged: After a USB key is unplugged from the
oscilloscope, this prompt appears. USB Screen Shot: When pressing Prtsc, this
prompt appears. USB File Save: When the oscilloscope is saving a waveform,
this prompt is shown on the screen. No signal in channel: When inputing slow
signal, small signal or no signals, after conducting auto setting, this prompt
appears.
13.2 Troubleshooting (1) No waveform appears If no waveform appears on the
screen after acquiring signals, please follow the steps below to find the
cause: . Check if the probe is connected to the signal test point correctly. .
Check if the signal connection line is connected to the input point of analog
channel. . Check if the input point of analog channel signal is consistent
with the open channel. . Connect the probe tip to the compensating signal
connector of DSO to check if the
probe is in good condition. . Check if the thing to be measured generates
signals (connect the channel with signal
to the signal without signal to find the cause). . Press AUTO to recollect
signals.
(2) Voltage test problem The measured voltage amplitude is 10 times higher or
lower than the actual value: check if the attenuation coefficient of channel
probe is consistent with the attenuation rate of applied probe. (3) No trigger
There is waveform display but it is not stable: Check the trigger Source setup
in the trigger menu. See whether it is the same as the
actual signal input channel. Check the trigger type: Use Edge trigger for
ordinary signals. Stable waveform display
is achieved only when the correct trigger mode is selected. Try changing the
trigger coupling to High Frequency Holdoff or Low Frequency Holdoff
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UTD2000 Series User Manual or to filter any high or low frequency noise that
is interfering with triggering. (4) Slow refresh
. Check if the acquiring mode in ACQUIRE button menu is average, and the
average times are large.
. If increasing the refresh speed is needed, please decrease the average times
appropriately or select other acquiring modes, i.e. normal sampling.
. Check if the persistence in DISPLAY button menu is set relatively long or
infinite. (5) The waveform is like stair-step shape.
. Stair-step waveform is normal. The horizontal time-base scale may be is
overlow, increase the horizontal time base to increase the horizontal
resolutuion, which can improve the display.
. The display type may be vector, the connecting line between sampling points
may lead to a stair-step shape. Set the display type as point display to solve
the problem.
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Chapter XIV Technical Information
Except for those specifications marked with “Typical”, all specifications have
warranties.
Unless otherwise specified, all technical specifications are applicable to the
probes with attenuation switch set as 10× as well as UTD2000 series DSO. DSO
must first meet the following two conditions to meet those specification
standards: The instrument must continuously operate for over half an hour
within the operating
temperature. If the change scope of operating temperature is or exceeds 5°C,
please perform the
“Self-Adjustment” function in the UTILITY system function.
Acquire System Specification
Model
UTD2052 CL+
Real-time Equivalence
500MS/s 50GS/s
UTD2072 CL
UTD2102CL PRO
UTD2102CL+
UTD2152 CL
500MS/s 50GS/s
500MS/s 50GS/s
500MS/s 50GS/s
UTD2102 CEX+
1GS/s 50GS/s
UTD2152 CEX
1GS/s 50GS/s
UTD2202 CEX+
UTD2202 PRO 1GS/s
50GS/s
Average
When the sampling times of all channels are N, N can be chosen among 2, 4, 8, 16, 32, 64, 128 and 256
Input Channel Specifications
Input Coupling
DC, AC and GND
Input impedance (1M± 2%)//(18pF± 3 pF)
Probe attenuation coefficient Maximum input voltage
0.01×/0.02×/0.05×/0.1×/0.2×/0.5×/1×/2×/5×/10×/20×/50×/100×/200×/500×/1000× 400Vpk, the transient over voltage is 1000 Vpk.
Horizontal System Specification
Time-base scale 2ns/div-50s/div
Waveform
Sin(x)/x
interpolation
Time-base accuracy
(50+2×Service life)ppm
Record length
2×512k sampling point
Storage depth
Single channel: 64kDouble channel: 32k
Sampling rate and delay time accuracy
±50ppm (any time interval 1ms )
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Measurement accuracy of time interval (T) (full bandwidth)
Single time: ± (1 sampling time interval+50ppm×reading+0.6ns) >16 average values: ± (sampling time interval+50ppm×reading+0.4ns)
Vertical Model
UTD2052 CL+
UTD2072 CL
UTD2102PRO UTD2102CL+
UTD2152CL
UTD2102 CEX+
UTD2152 CEX
UTD2202 CEX+
UTD2202 PRO
Analog Bandwidth 50MHz
70MHz
100MHz
150MHz
100MHz 150MHz 200MHz
Rise Time(Typical) Channels
7ns 2
7ns 2
3.5ns 2
2.4ns 2
3.5ns 2
2.4ns
1.8ns 2
Analog-to-digital converter (A/D) Deflection factor range (V/div)
8bit 1mV/div~20 V/div(at 1-2-5 increment)
Position range Selectable bandwidth limitation (Typical) Low frequency response (AC Coupling-3dB) DC gain accuracy (sampling or average sampling mode)
±8div 20MHz
5 Hz(above BNC) 5mV ~20V/div±3% 1mV ~2mV/div±4%
When vertical position is 0 and N16:
DC measurement accuracy (average sampling mode)
± (4%×reading+0.1div+1mV) and selects 1mV ~2mV/div; ± (3%×reading+0.1div+1mV) and selects 10mV20V/div; When vertical position is not 0 and N16: ±(3%×(reading + vertical position reading) + (1%×vertical position reading)]+0.2div) The setting from 5mV/div to 200mV/div plus 2mV;
the setting value from 200mV/div to 20V/div plus 50mV
Measurement
Under the same setting and environment conditions and after averaging the captured waveforms with a
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UTD2000 Series User Manual
accuracy of voltage difference (V) (average sampling mode)
quantity of 16, the voltage difference (V) between any two points on the waveform: ± (3%×reading+0.05div)
Trigger System Specifications
Trigger sensitivity
1div
Range of trigger level
InteriorFrom the screen center ±10div EXT ± 3V
Trigger level accuracy (Typical) applicable for the signal with rising and
falling time 20ns
Pre-trigger capacity
Interior±(0.3div×V/div) (within±4 div from the screen center) EXT±(6% setting value+40mV) Normal mode/scan mode, pre-trigger/delay trigger, the pre-trigger depth is adjustable.
Hold-off range Set the level to 50% (Typical) Trigger mode
80ns~1.5s Operate under the condition of input signal frequency of 50Hz AUTO, normal, single
High-frequency holdoff
Hold off signals over 80kHz
Low-frequency holdoff
Hold off signals below 80kHz
Edge trigger
Edge
Rise, fall, rise&fall
Pulse width trigger
Trigger mode
, <, <>
Polarity
positive pulse width, negative pulse width
Pulse width range
20ns~10s
Slope trigger
Slope condition
Positive slope (>, <, within the scope) Negative slope (>, <, within the scope)
Time setting
20ns~10s
Video trigger
Trigger sensitivity (Typical) 2div Vpp
Signal model and line/field frequency (video trigger type)
Support standard NTSC and PAL, and the line number scope is respectively 1-525 (NTSC) and 1-625 (PAL)
Alternating trigger
Alter
Edge, Pulse, Slope
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Measurements
Cursor
Automatic measurement Measurement quantity Measurement scope Measurement
statistics
Manual mode Voltage difference between cursors (V), Time difference between cursors (T), Reciprocal of T (Hz) (1/T))
Track mode
Voltage value and time value of point of waveform.
Auto measurement mode
Cursor display is allowed on auto measurement mode.
Vpp, Vamp, Vmax, Vmin, Vtop, Vbase, Vmid, Average, Vrms, Overshoot, Preshoot, Frequency, Period, RiseTime, FallTime, +Width, -Width, +Duty, -Duty, Delay, FRFR, FRFF, FFFR, FFFF, FRLF, FRLR, FFLR, FFLF
Display 5 types of measurement at the same time.
Screen or cursor
Average value, maximum value, minimum value and standard deviation.
Math Math operation Window Vertical scale Digital filtering
+, -, ×, ÷ Rectangle, HanningBlackmanHamming VrmsdBVrms Low pass, high pass, band pass, band reject
Storage Setting Reference waveform Data file Bitmap
Internal: 20 groups. USB: 200 groups Internal: 20 groups. USB: 200 groups Internal: 20 groups. USB: 200 groups USB: 200 groups, in BMP format.
Trigger frequency meter
Reading resolution 6 bits
Trigger sensitivity
30Vrms
Accuracy (Typical)
±51ppm (+1 character)
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Display Displays types Display resolution Display color Waveform luminance Backlight intensity (Typical) Language
LCD with Diagonal of 178mm (7-inch) 800 horizontal×RGB× 480 vertical pixels Color Adjustable 300nit Chinese and English
Interface function:
Standard configuration
StandardUSB-Host, USB-Device, EXT Trig, Pass/Failt. OptionMultimeter module (UT-M12), LAN.
General Technical Specification
Probe compensator output
Output voltage (Typical)
About 3Vpp, when the load1M
Frequency (Typical)
10Hz,100Hz, 1kHz(Default), 10kHz
Power Source
Power voltage
100V-240V~(Fluctuations±10% )50/60Hz
Power consumption
100VA max
Fuse
F 1.6A, 250V
Environment Specifications
Intended use
Indoor use
Pollution degree
2
Operating temperature
Operating Temperature Range: 0~+40
Storage Temperature
Storage Temperature Range: -20~+60
Cooling
Build-in cooling fan
Operating Humidity Range Operating Altitude
<35: 90%RH 35~40: 60%RH Operating2000 meters below Non-operating15000 meters below
Mechanical specifications
Size
306mm(W)×138mm(H)×124mm(D)
Weight
Excluding package2.5kg Including package3kg
Recommended calibration Interval The recommended calibration interval is one year.
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Chapter XV Appendix
Appendix A Accessories
Model
Standard accessories Optional accessories
UTD2052CL+ (50 MHz) UTD2072CL (70 MHz) UTD2102CL+ (100 MHz) UTD2102CL PRO (100 MHz) UTD2152CL (150 MHz) UTD2102CEX+ (100 MHz) UTD2152CEX (150 MHz) UTD2202 PRO(200 MHz) UTD2202CEX+ (200 MHz) A string of power cord complying with country standard. A string of USB cable (UT-D14) A pair of passive probe (50MHz) /(150MHz) /(200MHz) Multimeter module (UT-M12)
Appendix B Maintenance and Cleaning (1) General Maintenance Please do not
store or place the instrument at any places where the LCD of the instrument is
exposed to sunlight directly. Caution: Please do not stain the instrument or
probe with spray, liquid or solvent, so as to avoid damaging the instrument or
probe. (2) Clearing Check the instrument and probe frequently. Clean the
surface of the instrument according to the following steps: Please wipe the
surface of the instrument and probe with soft cloth. Pay attention not to
scratch the LCD screen. Wipe the instrument with wet cloth after disconnecting
the power supply. Use detergent or clear water to clean. Do not use any
abrasive chemical cleaning agent so as to avoid damaging the instrument or
probe.
Warnings: Please make sure that the instrument is completely dry before
powering on again, to avoid electrical short circuit or injury.
Appendix C Warranty UNI-T (Uni-Trend Technology (China) Co., Ltd.) warrants
that product produced and marketed by it will be free from defects in
materials and workmanship for a period of three
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UTD2000 Series User Manual 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 according to
specific terms and conditions of the warranty. To request maintenance and
repair service or a full copy of the warranty, please contact your nearest
UNI-T sales and maintenance office. Save and except the guarantee given herein
or in other applicable warranty, UNI-T makes no other express or implied
guarantee, including but not limited to any implied guarantee on the product’s
tradability and suitability for any specific purpose. Under no circumstance
will UNI-T bear any liability for any indirect, special or subsequent loss.
Appendix D Contact Us For product support outside China, contact your local
UNI-T supplier or sales centre. Service Support: Many UNI-T products offer
optional plans of extended warranty period or calibration period. For details
please contact your local UNI-T supplier or sales centre.
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References
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