Marka: UNI-T Model: UTD2000_3000 Format: pdf Język: angielski
Introduction
Dear users:
Thank you for purchasing UNI-T product. To operate the instrument correctly, please
read this Operating Manual carefully and especially its "Safety Notice" before use.
Afer reading it, you are suggested to keep the manual properly. Please keep it with the
instrument together or place it in an accessible location for future use.
Operating Manual for UTD2000/3000
General Safety Overview
The instrument is designed and manufactured strictly
according to "Safety Requirements of Electronic
Measuring Instruments" (GB4793) and IEC61010-1
Safety Standard . It conforms to "Insulation Overvoltage
Standard" (CAT
Pollution Level
600V) and Safety Standard with
You are expected to know the following
safety precaution measures to avoid personal injury or
product damage or any other product connected to it.
Please use the product according to the regulations so
as to avoid the possible damage.
Only personnel with professional training can execute
maintenance procedure to avoid fire or personal
injury. Appropriate power wires should be used and
special power wires must be approved by the state.
Correct plug-in/out: Please do not plug in/out when
connecting probe or testing conduits to voltage
source.
Reliable grounding of products: The product is
grounded by ground conductor of power supply.
Ground conductor must be connected to earth to
avoid electric shock. Please guarantee correct
grounding before connecting input/output terminal of
the product.
Correct connection of oscillograph probe: Earth wire
of probe is the same to earth potential. Please do not
connect earth wire to high voltage.
Review of rated values of all terminals: Please refer to
all rated values and marks on the product surface to
avoid fire or excessive current shock. Please refer to
product manual before connecting products so as to
know details of rated values.Do not open cover plate
of machine box: It is not allowed to start or operate the
product when opening external cover or panel.
Operating Manual for UTD2000/3000
Usage of appropriate fuse: It is only allowed to use
fuse type and rated indicator designated by the
product.
To avoid exposed circuits: It is not allowed to touch
exposed connector or element after power supply.
Operation is not allowed if there is any doubt for
product trouble: Please consult qualified maintenance
personnel to inspect the product if there is any trouble
doubt.
It has to maintain appropriate ventilation. It is not
allowed to operate in wet locations. It is not allowed
to operate in combustible and explosive
environment. It has to keep product surface clean
and dry.
Operating Manual for UTD2000/3000
Safety Terms and Symbols
Terms in the manual: The following terms may be
seen in the manual:
Warning: Warning statement means the
conditions and behaviors that may endanger lives.
Note: Notice statement means the conditions
and behaviors that may cause other property
damage
Terms for products: The following terms may be
Danger: It refers to direct injury near the mark.
Warning: It refers to potential injury near the mark.
Note: It refers to potential danger for the product
and other properties.
Product symbol: Following symbols may be shown
on the product surface.
High voltage
Protective
ground terminal
Caution!
Refer to manual
Ground terminal
for chassis
Ground terminal
for testing
Operating Manual for UTD2000/3000
Preface
The manual is about operation information of OPERATING MANUAL FOR UTD2000/3000 digital storage
oscillograph. The manual includes the following chapters
Chapter 1: User Guideline: It is to introduce functions of digital storage oscillograph easily and provide
installation guidelines.
Chapter 2: Instrument Setup:Operation methods of OPERATING MANUAL FOR UTD2000/3000 digital
storage oscillograph.
Chapter 3: Application example: Examples to solve various measurement problems
Chapter 4: System Prompt and Troubleshooting
Chapter 5: Appendix: Technical Indicators
Appendix B: Fittings of OPERATING MANUAL FOR UTD2000/3000 series digital storage oscillograph
Appendix C: Maintenance and Cleaning Maintenance
Operating Manual for UTD2000/3000
The manual includes 3 series of digital storage oscillograph as follows. Detailed models are shown in the
following form:
Series
Model
UTD2025C/UTD3025C
UTD2042C/UTD3042C
UTD2062C/UTD3062C
UTD2000C/3000C UTD2082C/UTD3082C
UTD2102C/UTD3102C
UTD2152C/UTD3152C
UTD2202C/UTD3202C
UTD2042CE/UTD3042CE
UTD2000/3000
UTD2062CE/UTD3062CE
UTD2000E/3000E UTD2082CE/UTD3082CE
UTD2102CE/UTD3102CE
UTD2152CE/UTD3152CE
UTD2202CE/UTD3202CE
UTD2025CL
UTD2000L
UTD2052CL
UTD2052CEX
UTD2000EX
UTD2102CEX
Band width
Real-time
25MHz
40MHz
60MHz
80MHz
100MHz
150MHz
200MHz
40MHz
250MS/s
500MS/s
60MHz
80MHz
100MHz
150MHz
200MHz
25MHz
50MHz
50MHz
100MHz
500MS/s
500MS/s
500MS/s
500MS/s
500MS/s
1GS/s
1GS/s
1GS/s
1GS/s
1GS/s
1GS/s
250MS/s
500MS/s
1GS/s
1GS/s
Operating Manual for UTD2000/3000
UTD2000/3000 series digital storage oscillograph
provides simple front panel with clear functions to
users for all basic operations. Scale and position of
various channels can provide intuitional operation
to meet usage habits of traditional instruments.
Users can use it skillfully without learning and
being familiar with operation for a long time. Users
can also press AUTO key directly to accelerate
adjustment and facilitate measurement.
Appropriate waveform and gear setup can be
shown on the instrument panel.
UTD2000/3000 series digital storage oscillograph
also has high-performance indicators and powerful
functions to fulfill measurement tasks quickly
besides easy usage. Quicker signals can be
observed by UTD2000/3000 series digital storage
oscillograph by real-time sampling of 500MS/s (or
1GS/s) and equivalent sampling of 25GS/s (or
50GS/s). It can capture and analyze waveform
easily by powerful trigger and analysis capacity.
Users can also observe and analyze signal
problems quickly and clearly by clear LCD display
and mathematical calculation function. We can see
that such series of digital storage oscillograph can
meet your measurement requirements by following
performance characteristics:
Double analog channels
High-resolution colorful LCD display system with
resolution of 320 240 or 800 480
To support plug and play USB storage instrument
to communicate with computer
Automatic waveform and status setup
Waveform, setup, bitmap storage, waveform and
setup reoccurrence
Operating Manual for UTD2000/3000
Elaborate view window extension function for
delicate analysis of waveform details and profile
Automatic measurement of 28 kinds of
waveform parameters
Automatic cursor tracing and measurement
function
Unique waveform recording and playback
functions
Embedded FFT
Multiple mathematical calculation functions
(including +, -,
for waveform
Edge, video, pulse width and ALT TRIG
functions
Multi-language menu display
Fittings of UTD2000/3000 series digital storage
oscillograph
2 probes of 1.2m
1:1/10:1
please refer to
manual of probe Fittings of probe details so as
to meet EN61010-031:2008 standard
1 power wire to meet national standards
1 Operating Manual
1 Product Warranty
USB connecting wire: UT-D06 or UT-D05
Communication control software for
UTD2000/3000 series oscillograph
Operating Manual for UTD2000/3000
Contents
Page
Item
General Safety Overview
Preface
Chapter 1: User Guideline ................................................................................... 1
General Inspection ........................................................................................... 5
Function Inspection .......................................................................................... 5
Probe Compensation ....................................................................................... 8
AutomaticSetup of Waveform Display.............................................................
9
Elementary understanding of Vertical System................................................ 9
Elementary understanding of Horizontal System........................................... 11
Elementary understanding of Trigger System........................................... 14
Chapter 2: Instrument Setup....................................................................... 15
Setup of Vertical System.........................................................................
16
Setup of Horizontal System...................................................................... 27
Setup of Trigger System........................................................................... 31
Operating Manual for UTD2000/3000
Item
Page
Setup of Sampling System................................................................. 44
Setup of Display System.................................................................................... 48
Storage and Callout ........................................................................................... 50
Setup of Auxiliary Functions .............................................................................. 55
Automatic Measurement.................................................................................... 60
Cursor Measurement ......................................................................................... 68
Operation Key .................................................................................................... 70
Chapter 3: Application Examples ................................................................... 72
Example 1: Measurement of Simple Signals ..................................................... 72
Example 2: Delay Observation of Sine Signals by Circuit.............................. 73
Example 3: Capture of Single Signal............................................................. 75
Example 4: Reduction of Random Noise for Signals...................................... 76
Example 5: Application Cursor Measurement................................................ 78
Example 6: Application of X-Y Function......................................................... 79
Example 7: Trigger of Video Signals................................................ .............. 81
Operating Manual for UTD2000/3000
Item
Page
Examp Example 8: Pass/Fail Detection ........................................................ 83
Examp Example 9 : Usage of Upgrading Procedure of U disk ..................... 84
Example 10: Usage of Storage Function ...................................................... 85
Chapter 4: System Prompt and Troubleshooting ......................................... 88
System Prompt Information ............................................................................. 88
Troubleshooting ................................................................................................ 89
Chapter 5: Technical Indicators............................................................ 91
Appendix A: Technical Indicators....................................................... 91
Appendix B: Fittings of UTD2000/3000 Series Digital Storage Oscillograph... 104
Appendix C: Maintenance and Cleaning Maintenance................................ 105
Operating Manual for UTD2000/3000
Chapter 1: User Guideline
UTD2000/3000 series digital storage oscillograph is
a small and handy desktop product. Basic test can be
done by providing convenient front panel to facilitate
operation for users.
UTD2000/3000 series are to provide simple front
panel with clear functions to users for basic
operation. Panel also includes knob and function key.
Knob functions are similar to those of other digital
storage oscillograph.
The chapter is to show execution of following steps
General inspection
Function inspection
Probe compensation
Automatic setup of waveform display
Elementary understanding of vertical system
Elementary understanding of horizontal system
Elementary understanding of trigger system
1
General inspection
Please know front operation panel firstly after
getting UTD2000/3000 series digital storage
oscillograph. The chapter is to introduce operation
and functions of front panel for
UTD2000/3000products so as to be familiar with
usage within the shortest period.
5 keys in a row in the right side of display panel are
menu operation keys. (They are defined as F1 to F5
keys from top to bottom.) You can also set different
options for current menu by them. Other keys are
function keys. You can enter into different function
menus or gain specific function application directly
by them.
Operating Manual for UTD2000/3000
multi-purpose common Operation
controls
knob controller menu
trigger control
horizontal control
vertical control
probe compensation
signal output
interface
analog signal input
EXT TRIG INPUT
5.7 inch front panel of UNI-T
2
Operating Manual for UTD2000/3000
multi-purpose common Operation
controls
knob controller menu
trigger control
horizontal control
vertical control
interface
7 inch front panel of UNI-T
3
probe compensation
signal output
EXT TRIG INPUT
analog signal input
Operating Manual for UTD2000/3000
display of trigger status
mark of
channel 1
display of horizontal trigger position
time display of central scale line
Menu varies with
different function
keys.
waveform
display window
mark of
channel 2
vertical scale
coefficient of
display channel
display setup of
main time base
Interface display diagram of digital storage oscillograph (i.e. UTD2000L series)
4
Operating Manual for UTD2000/3000
General inspection
It is suggested to inspect the instrument by
following steps when getting a new UTD2000/3000
series digital storage oscillograph.
1. To check if there is damage due to transportation
or not.
Please replace carton or foaming plastic protection
cushion with severe damage instantly.
2. Please inspect fitting details and shown it in
"Fittings of UTD2000/3000 series digital Storage
Oscillograph" shown in the manual. You can check
if there are deficient fittings or not by referring to it.
Please contact UNI-T distributor or local agent if
there are deficient or damaged fittings.
3. Please inspect the entire machine and contact UNI-T
distributor or local agent for damaged appearance,
abnormal operation or failing to pass performance test.
Please pay attention to packages and report to
5
transportation department and UNI-T distributor if
machine damage is caused by transportation.
UNI-T will arrange maintenance or replacement.
Function inspection
Please carry out once fast function inspection to
check if the machine operates normally or not.
Please operate according to following steps:
1. Connect the power supply
You can supply power to the machine and voltage is AC
100V to AC 240V. Frequency is 45Hz to 440Hz. It has
to press [UTILITY] menu and [F1] for self-correction
after power supply 30 minutes after operation of hot
machine so that digital storage oscillograph operates
under the best status. As shown in Figure 1 4, please
enter into next page and press [F1] to call out ex-factory
setup.
Operating Manual for UTD2000/3000
power switch
MULTIPUR POSE
MEASURE
ACQUIRE
STORAGE
DISPLAY
CURS OR
UTILI TY
AUTO
S EL ECT
VERTICAL
F1
HORIZONTAL
P OSITIO N
TRIGGER
P OS ITIO N
LEV E L
F2
CH 1
HOR I
MEN U
MATH
SET
TRIG
MEN U
F3
CH2
S CAL E
S CAL E
FORCE
F4
HELP
V
mV
VOLTS D IV
F5
CH1
S
S
function button
SEC D IV
CH2
Figure 1-4
Warning: Please confirm safety grounding of digital
storage oscillograph to avoid dangers.
2. Signal access of digital storage oscillograph is
double-channel input for UTD2000/3000 series
digital storage oscillograph. There is also 1 EXT
TRIG INPUT channel. Please connect signals
according to following steps:
(As shown in Figure 1-5), connect probe of
Figure 1
probe
5 Setup of attenuation ratio switch on
digital storage oscillograph to CH1 input terminal
and set attenuation ratio switch on probe to 10×Á
6
Operating Manual for UTD2000/3000
In digital storage oscilloscope to set the probe
attenuation factor. The attenuation coefficient of
vertical gear ratio change instruments, which
makes measurement resultsSetup method of
attenuation coefficient of probe is as follows to
show amplitude of measured signals correctly.
Please press F4 key for menu display of 10×
Connect probe and grounding clip to
corresponding connection ends then press [AUTO]
button. As shown in Figure 1-7, square wave (1kHz,
about 3V and peak value) can be displayed within
several seconds. It has to inspect CH2 by the same
method then press [OFF] function button so as to
power off CH1. It has to press [CH2] function button
to power on CH2 and repeat the second and third
steps.
Probe ration
Figure 1-6 Setup of deflection coefficient of probe
on digital storage oscillograph
Figure 1 7
7
Operating Manual for UTD2000/3000
Probe compensation
It needs to adjust it when connecting probe to any
2
Observation of displayed waveform
input channel for the first time so that probe can be
appropriate to input channel. Probe without
compensation correction can also bring in
measurement tolerance or error. Please operate
according to following steps for adjustment of
probe compensation:
1. To set probe menu attenuation coefficient to
10× and place probe switch to 10× then connect
digital storage oscillograph probe to CH1. Please
guarantee reliable contact to probe. It has to
connect probe end to signal output connector of
probe compensator then connect grounding clip to
earth wire connector of probe compensator. It also
has to power on CH1 and press [AUTO].
Exceeding
compensation
Correct
compensation
Insufficient
compensation Figure 1 8
Compensation correction of probe
3. Adjust variable capacitance on the probe by
screwdriver of non-metallic handle for waveform
display of "insufficient compensation" or
"excessive compensation" shown in above figure
until "correct compensation" for waveform display
on the screen as above.
Warning: Please guarantee perfect insulation
conduits of probe and do not contact metallic part
of probe when connecting to HV source to avoid
electric shock of probe during HV measurement.
8
Operating Manual for UTD2000/3000
Automatic setup of waveform display
UTD2000/3000 series digital storage oscillograph
Elementary understanding of vertical system
As shown in the following figure, there are a series
has automatic setup functions. It can adjust vertical
of keys and knobs in vertical control area. Please
deflection coefficient, scanning time base and
introduce usage of vertical setup gradually as
trigger mode automatically according to input
follows.
signal for the most appropriate waveform display.
Frequency of measured signals shall be more than
or equal to 50Hz and duty cycle shall exceed 1%
according to automatic setup requirements.
Automatic setup
1. Connect measured signals to signal input
channel.
2. Press [AUTO] button so that digital storage
oscillograph can set vertical deflection coefficient,
scanning time base and trigger mode
automatically. They can be adjusted again after
careful observation and automatic setup so that
waveform display can realize the best effect.
9
5.7-inch vertical
control panel of screen
7-inch vertical control
panel of screen
Figure 1 9 Vertical control area on the panel
Operating Manual for UTD2000/3000
1. Use vertical position knob so that middle display
Vertical position of double analog channels shall be
of waveform signal in the window. Vertical display
restored to short-cut key of zero pointnamely,
position of signal can be controlled by vertical
SET TO ZERO.
position knob.
The key is to return vertical displacement/horizontal
Ground mark moves vertically with waveform when
displacement/hold off position to zero point
rotating vertical position knob.
(or middle point).
Measurement knack
Of which: UTD2000L /2000EX series will trigger
You can observe difference between waveform
electric level Return to 50% of position.
and signal ground to measure DC component
2
of signal quickly if adopting DC channel
status information. You can determine variation of any
coupling mode. DC components in the signal
vertical gear by status bar below waveform window.
will be filtered if adopting AC coupling mode
Vertical gear of "volt/grid" can be altered by rotating
. You can also display AC component of signal
vertical scale knob to show corresponding variation for
by higher sensitivity conveniently.
channel gear display which corresponds to status bar.
Alter vertical setup and observe alternation of
User can press [CH1], [CH2] , [MATH] and [REF] to
display operation menu, mark, and waveform and
gear status information of corresponding channels.
10
Operating Manual for UTD2000/3000
Users can also press [OFF] key to close currently
selected channels for UTD2000C/3000C and
Elementary understanding of horizontal system
As shown in following figure, there is 1 key and 2
UTD2000E/3000E oscillograph. They can also
knobs in horizontal control area. Please be familiar
click on CH1, CH2 and MATH keys twice to close
with setup of horizontal time base gradually as
corresponding channels for UTD2000L/2000EX
follows:
oscillograph.
Horizontal control
panel of 5.7-inch
Horizontal control
panel of 7-inch
Figure 1 10 Horizontal control area on the panel
11
Operating Manual for UTD2000/3000
1. Use horizontal SCALE knob to alter horizontal
3. Please press [MENU] button for 5.7-inch
time base gear then observe alternation of status
oscillograph (and press [HORI MENU] button for 7-
information. To rotate horizontal SCALE knob to
inch oscillograph) to display Zoom menu. Please
alter "s/div" time base gear so as to show
press [F3] to open view window extension under
corresponding variation of time base gear display
this menu then press [F1] to close view window
for corresponding channels of status bar.
extension and return to main time base. Hold off
Horizontal scanning speed steps from 2ns/div
time can be set under this menu.
50 s/div by way of 1 2 5 mode.
Note: Horizontal scanning time base gear varies
for UTD2000/3000 series digital storage
oscillograph due to different models.
2. Use horizontal POSITION knob to adjust
horizontal position of signals in waveform window.
To use horizontal POSITION knob to control trigger
displacement of signals. Horizontal movement of
waveform with knob can be observed when rotating
horizontal POSITION knob for application for
trigger displacement.
12
Operating Manual for UTD2000/3000
Trigger point can be restored to vertical middle
point quickly by short-cut key of [SET TO ZERO] so
as to restoring displacement of trigger point to
horizontal zero point short-cut key. Users can also
adjust horizontal position of signal in waveform
Elementary understanding of trigger system
As shown in Figure 1 11 there is 1 knob and 3
(or 2) keys in control area of trigger menu. Please
be familiar with setup of trigger system gradually as
follows:
window by rotating horizontal POSITION knob.
Term explanation
Trigger point: It refers to position of actual trigger
point by comparing with middle point of storage
instrument. Users can move trigger horizontally by
rotating horizontal POSITION knob.
Hold off: It refers to interval to start up trigger
circuit again.
Hold off time can be set by rotating multi-purpose
knob controller.
5.7-inch screen 7-inch screen
Figure 1-12
Trigger menu
Figure 1 11 Trigger menu on the panel
13
Operating Manual for UTD2000/3000
1. To user trigger level knob to alter trigger level
i n trigger signal amplitude.
and instruct trigger level line by seeing trigger mark
4.To press FORCE button: To produce 1 trigger
on the screen so that it moves vertically with knob
signal forcefully for mainly application for normal
rotation. Variation of trigger level in lower part of
and single trigger mode.
screen can be observed when moving trigger level
at the same time.
2. (As shown in Figure 1-12,) TRIGGER MENU can
be used to alter trigger setup.
User can press [F1] key to select "edge" trigger.
They can press [F2]key to select "trigger source"
to CH1.
They can press [F3] key to set "gradient" of edge
type to ascending.
They can press [F4 ]key to set "trigger mode" to
automatic. They can also press F5 key to set
"trigger coupling" to AC.
2. They can press [50%] button for 5.7-inch oscillograph
and press [SET TO ZERO] key for 7-inch oscillograph.
It also has to set vertical middle point of trigger level
14
Operating Manual for UTD2000/3000
Chapter 2: Instrument Setup
By now, you have been familiar with operation of
vertical control area, horizontal control area and
trigger system menu for UTD2000/3000 series digital
storage oscillograph preliminarily. You should be
familiar with setup of digital storage oscillograph by
menu operation by introduction shown in previous
chapter. It is suggested to read Chapter 1 if you have
not been familiar with above operation and methods.
The chapter is mainly to introduce following themes
Set vertical systems of [CH1], ]CH2],] MATH],
]REF] , ]OFF] ]VERTICAL POSITION] and
]VERTICAL SCALE];
Set horizontal systems of ]MENU] or ]HOR
MENU], ]HORIZONTAL POSITION] or
[HORIZONTAL SCALE];
Set trigger systems of [TRIGGER LEVEL],
[MENU], ]50%] and] FORCE];
Set sampling mode of [ACQUIRE];
15
Set display mode of [DISPLAY];
Store and call-out for [STORAGE];
Set auxiliary system of [UTILITY];
Automatic measurement of [MEASURE];
Cursor measurement of [CURSOR];
Use execution buttons of [AUTO] and
[RUN/STOP];
It is suggested to read the chapter carefully to know
many measurement functions for UTD2000/3000
and system operation method.
Operating Manual for UTD2000/3000
Setup of vertical system
CH1 and CH2 channels and setup
Every channel has its own vertical menu. Every
item can be set individually according to different
channels. As shown in Form 2-1, the system can
display operation menu of CH1 or CH2 channel by
pressing CH1 or CH2 function key.
Form 2-1
Function menu Setup
Description
To obstruct DC component
of input signal.
DC
To cut off input signals by AC
Coupling
Grounding and DC components of input
signals.
To limit band width to 20MHz
ON
Bandwidth
so as to reduce display noise.
limit
Full band width
OFF
To set vertical deflection
Coarse
coefficient for coarse tuning
tuning
by 1-2-5 system. To refine
Volt/grid
within setup scope of coarse
Fine
tuning tuning for fine tuning so as to
improve vertical resolution.
To select one value according
to probe attenuation
1
coefficient to keep correct
10
vertical deflection coefficient.
Probe
100
There are totally 4 kinds,
1000
namely, 1 , 10 , 100
and 1000 .
To realize reverse direction
ON
Reverse phase
function for waveform;
To display waveform normally.
OFF
AC
16
Operating Manual for UTD2000/3000
1 Setup of channel coupling
Measured signal is a sine signal with DC component
Press F1 to DC to pass through DC and AC
by taking exerting signal to CH1 channel as an
Waveform display is also shown in following figure:
components of measured signals of CH1 channel.
example.
To press F1 to select AC and AC coupling mode. DC
DC coupling
setup
component contained by measured signal will be
obstructed. Waveform display is shown in following
figure.
Setup of
AC coupling
Figure 2
2 Synchronous display of DC and AC
components of signal
Press F1 to select grounding and set channels to
grounding mode. DC and AC components
contained by measured signals will be obstructed.
Figure 2 1 Jammed DC component of signal
17
Waveform display is shown in following figure:
displayed on the screen.
Operating Manual for UTD2000/3000
(Note: Input signal still shall be connected to
channel circuit under such mode although
2. Setup of channel bandwidth limit
Input one sine signal of about 40MHz for CH1 as an
waveform is not
example. It has to press [CH1] to open CH1 channel
then press [F2] to set bandwidth limit to OFF.
Ground coupling
setup
Channel band width is full band width to pass
through high-frequency components contained by
measured signal. Waveform display is also shown
in following figure.
Figure 2 3 Synchronous obstruction of DC and
AC components of signal
Bandwidth
suppression
20MHz
Bandwidth suppression icon
Figure 2 4 Waveform display when closing
bandwidth limit
18
Operating Manual for UTD2000/3000
Please press [F2] to set band width limitation to ON
for great attenuation of high-frequency component
3. Setup of multiplying factor for probe
It has to set probe attenuation coefficient in
and noise of more than 20MHz contained by
operation menu of channel to coordinate with
measured signals. Waveform display is also shown
attenuation coefficient setup of probe. Probe
in following figure.
coefficient in channel menu shall be set to 10× if
probe attenuation coefficient is 10:1. It has to
Close
bandwidth
limit
analogize to guarantee correct voltage.
Volt/grid gears of vertical deflection coefficient can
be divided into coarse tuning and fine tuning.
Please refer to following figure for setup and
vertical gear when using 10:1 probe.
Figure 2 5Waveform display when opening
bandwidth limit
Probe
attenuation
coefficient
Figure 2 6 Probe attenuation coefficient shown
in channel menu
19
Operating Manual for UTD2000/3000
4. Regulation setup of vertical volt/grid
Volt/grid scope is 2mV/div
V/div (or 10V/div), or 1mV/div 20 V/div with step
by way of 1
2
5
Deflection coefficient shall be
5 Setup of reverse phase of waveform
Reverse phase of waveform:
It is to show overturning degree of phase location of
displayed signals. Please refer to Figure 2
8 for
altered within current vertical gear scope by less
waveform without reverse phase. Please refer to
step during fine tuning so as to realize
Figure 2
9 for waveform with reverse phase.
uninterrupted and continuous adjustment of vertical
deflection coefficient within all vertical gears.
Setup of
fine tuning
Without
reverse phase
Figure 2 8 Setup of reverse phase of vertical
channel (or without reverse phase)
Figure 2 7 Coarse tuning and fine tuning of
vertical deflection coefficient
20
Operating Manual for UTD2000/3000
I. Realization of mathematical calculation
function
Mathematical calculation functions are to show +, -,
, / as well as FFT calculation results for CH1 and
CH2 channel waveform. Menu is shown as follows:
Reverse phase
of waveform
Figure 2 9 Setup of reverse phase of vertical
channel
Mathematical calculation
Figure 2
21
10 Mathematical calculation
Operating Manual for UTD2000/3000
Form 2-2: Introduction to mathematical calculation
Description
Function Menu Setup
Math
Type
CH2
Operator
Information
source 2
domain signal when using mathematical calculation
CH1
CH2
To set information source 1
as Ch1 channel waveform.
To set information source 1
as Ch2 channel waveform.
of fast Fourier transtable (FFT). Following types of
Information source 1
Information source 2
Information source 1
Information source 2
Information source 1
Information source 2
Information source 1
Information source 2
CH1
Information
source
Analysis of FFT frequency spectrum
Time domain signal can be converted to frequency
measurement system;
Show noise characteristics in DC power;
Analyze vibration;
signals can be observed conveniently by using
FFT
Measure harmonic content and distortion within
To set information source 2
as CH1 channel waveform.
To set information source 2
as CH2 channel waveform.
22
Operating Manual for UTD2000/3000
Form 2-3: FFT menu Description
Function
Type
Information
source
Window
Vertical unit
23
Setup
FFT
Description
FFT mathematical
calculation
CH1
To set CH1 and CH2 as
calculation waveform.
CH2
Hanning Set Hanning window
function
Hamming Set Hamming window
function
Blackman Set Blackman window
function
Rectangle Set Rectangle window
function
Vrms
To set vertical unit to
dBVrm Vrms or dBVrms.
FFT operation knack:
Signals with DC component or deviation will bring
in error or deviation of FFT waveform component.
AC coupling mode can be selected to reduce DC
component.
Average obtainment mode of digital storage
oscillograph can be set to reduce random noise
and aliasing frequency component of repeated or
single pulse event.
Operating Manual for UTD2000/3000
Selection of FFT window
Mathematical storage oscillograph will carry out FFT conversion for time record with limited length when
assuming continuous repetition of YT waveform. YT waveform will have the same amplitude in beginning
and ending locations for no interrupation. However, high-frequency transient interruption will be caused in
connector due to different waveform amplitudes for non-integral cycle of YT waveform. Such effect shall be
called as leakage in frequency domain. Therefore, value in forced beginning and ending locations is 0 by
multiplying original waveform by a window function to avoid leakage. Please refer to following form for
application of window function.
Form 2-4
FFT window
Rectangle
Hanning
Hamming
Blackman
The most appropriate measurement content
Transient or short impulse with basically equivalent
The best frequency and the poorest
signal level; Sine with equivalent amplitude with
amplitude resolution to be basically
similar frequency; Wide band random noise of wave
similar to circumstances without window;
spectrum with slow variation;
With excellent frequency resolution and
Sine, cycle and narrow band random noise
poor amplitude resolution by comparing
with rectangular window;
Frequency resolution of Hamming window
Transient or short impulse with large difference
is better than that of Hanning window slightly. for signal level;
The best amplitude resolution and the
Mainly used for single-frequency signal to search
poorest frequency resolution
for higher order of harmonic wave.
Characteristics
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Operating Manual for UTD2000/3000
Term explanation:
FFT resolution: It is defined as factor of sampling
and calculation point. FFT resolution increases
when sampling rate decreases for fixed calculation
point quantity.
Nyquist frequency: Original waveform can not be
reset until using sampling rate of at least 2f for
waveform with the maximum frequency of "f". It is
also called as Nyquist guideline. "f" refers to Nyquist
frequency and "2f" refers to Nyquist sampling rate.
Reference waveform
Please refer to waveform stored in nonvolatile
memory (NVM) of digital storage oscillograph or
peripheral U disk with name of RefA and RefB as
follows. Please operate according to following
steps to call out or close reference waveform.
5. Please press REF menu key on the front panel
for 5.7-screen oscillograph
Please press [STORAGE]key and enter into the
25
second page to select call-out for 7-inch
oscillograph (namely, UTD2000L/2000EX series).
2. Please press [RefA] (RefA reference option) and
select information source then select its position by
rotating multi-purpose knob in upper part of front
panel. 1 10 (or 1 20) can be selected for the
position. Press "call-out" to call out waveform
which is stored inthe position originally after
selecting a certain position such as "1". Please
plug in U disk if waveform is stored in the U disk.
There are 2 options for magnetic disk as follows:
DSO/USB; Please press [F2] key and select USB.
(The menu can not be activated until plugging in U
disk.) Called out waveform is displayed on the
screen for waveform called out and stored from U
disk. Please press cancel key (F5) Return to
previous menu after waveform call-out.
3. To press [RefB] (RefB reference option) and
select
Operating Manual for UTD2000/3000
information source 2 which participates in
Function menu Setup
calculation and method is the same to the
display reference waveform menu. Setup is also
1 20 refer to positions of
20 groups of waveform
respectively;
There are 200 groups of
Storage position 1 20 waveform positions for
storage to USB;
(Storage position and quantity
vary withmachine model.)
shown in following form.
Form 2-5 Selection of storage position
Magnetic disk
secondstep. Please measure and observe related
waveform by UTD2000/3000 series digital storage
oscillograph during actual application. Please
compare current waveform with reference
waveform for analysis. Please press REF key to
Description
DSO To select internal storage position;
USB To select external storageposition
(until plugging inU disk);
To close called out waveform;
Close
Callout
To call out selected waveform;
Return to previous menu;
Cancel
It is allowed to select from 1 to 20 for internal
storage position. Please plug in U disk and press
F2 to select USB magnetic disk for external storage
instrument. Please refer to STORAGE menu for
waveform storage.
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Operating Manual for UTD2000/3000
Setup of horizontal system
Horizontal control knob
Control knob on horizontal surface can be used to
opening extension time base. Please refer to
alter horizontal scale (or time base) to trigger
be displayed for horizontal control key menu.
Form 2-6
horizontal position (or trigger position) shown in
RAM. Vertical middle point toward horizontal
direction on the screen is time reference point for
introduction to extension time base for details. (As
shown in the following form), horizontal menu can
Function menu Setup
waveform. Horizontal scale can be altered for
waveform extension or shrinkage by comparing
Main time base
with screen center. Horizontal position can also
Description
1.To open main time base;
2.To close view window
extension according to main
time base after opening;
alter by comparing with position of waveform
trigger point.
Horizontal position: To adjust horizontal position of
View window
extension
To open extension time base;
Hold off
To regulate inhibition period;
channel waveform (including mathematical
calculation). Resolution of such control key varies
according to time base.
Horizontal scale: To adjust main time base, namely,
s/div. Window width can vary with delay scanning
time base by rotating horizontal scale knob when
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Operating Manual for UTD2000/3000
Term explanation:
Y-T mode: Y axle refers to voltage and X axle
refers to time quantum under this mode.
X-Y mode: X axle refers to CH1 voltage and Y axle
refers to CH2 voltage under this mode.
Slow scanning mode: Instrument will enter into
slow scanning sampling mode when setting
horizontal time base control to 100ms/div or less. It
is suggested to set channel coupling to DC when
Figure 2-11 Interface of horizontal system
Mark Description:
Mark represents position of current waveform
view window in RAM
Mark position of trigger point in RAM.
Mark position of trigger point in current
waveform view window.
Display horizontal time base (or main time
observing low-frequency signal by applying for
slow scanning mode.
s-div: Time base control can expand or compress
waveform for horizontal scale (or time base) unit if
stopping waveform sampling (by using RUN/STOP
key).
base), namely, s/div.
Trigger horizontal distance of position by
comparing with middle point of view window.
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Operating Manual for UTD2000/3000
View window extension
View window extension is to argument a section of
waveform to review image details conveniently.
Setup of view window extension can not be slower
than that of main time base.
Horizontal extension
of the waveform
Extension
time base
Horizontally extended part of the waveform
Figure 2 1 2 Screen display under view window
extension
29
(As shown in above figure), it can be divided into 2
display areas under extension time base. Original
waveform is displayed for upper part. Selected area
can move horizontally by rotating horizontal
POSITION knob or increase or decrease by rotating
horizontal SCALE knob.
Waveform with horizontal extension in originally
selected waveform area is shown in lower part. (As
shown in above figure,) please pay attention that
resolution increases for extension time base by
comparing with main time base. Waveform displayed
by the entire lower party corresponds to area
selected for upper part so users can rotate horizontal
SCALE knob to reduce selected area and increase
extension time base, namely, horizontal extension
multiple of waveform.
The mode must be used for CH1 and CH2 at the
same time.
CH1 voltage will be displayed on X axle and CH2
voltage
Operating Manual for UTD2000/3000
will be displayed on Y axle after selecting X-Y
display mode.
functions do not effect during X-Y display.
Automatic testing mode
Cursor measurement mode
Reference or mathematical calculation waveform
View window extension function
Trigger control
Figure 2 13 Waveform display under X-Y mode
Note: Digital storage oscillograph can capture
waveform by any sampling speed under normal X-Y
mode. Similarly, it is allowed to adjust sampling
rate, vertical gear of channels and time base gear
under X-Y mode. Default sampling rate is 100MS/s
under X-Y mode. In general, sampling rate can
reduce to gain excellent Lissajou's figure. Following
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Operating Manual for UTD2000/3000
Setup of trigger system
Trigger can determine data acquisition time and
waveform display for digital storage oscillograph. It
Trigger level: Trigger level will set signal voltage
which corresponds to trigger point.
50%: To set trigger level to vertical point of trigger
waveform once correct setup. Digital storage
signal amplitude.
FORCE: To produce 1 trigger signal forcefully for
oscillograph will collect sufficient data to map
mainly application for normal and single modes
waveform in the left side of trigger point firstly. It
shown in trigger modes.
TRIG MENU: To trigger and set menu key.
can convert instable display to meaningful
will acquire data continuously and synchronously
when waiting for trigger conditions. It also will
acquire sufficient data continuously to map
waveform in the right side of trigger point. Trigger
control area of operation panel of digital storage
oscillograph includes trigger level adjustment knob
and trigger menu key of [TRIG MENU];
5.7-inch oscillograph will set 50% of trigger level in
vertical middle point of signal (and realize
UTD2000L /2000EX by press [SET TO ZERO] key).
It has to press forced trigger key of [FORCE].
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Operating Manual for UTD2000/3000
Trigger control
Trigger mode: Edge, pulse width, video and ALT TRIG;
Edge trigger: Trigger when edge of trigger signal reaches a certain given level.
Pulse width trigger: Trigger when pulse width of trigger signal reaches certain set trigger conditions
Video trigger: Carry out field or line trigger for standard video signals. (UTD2025CL/UTD2000EXseriesis
no such function.)
ALT TRIG: It is appropriate to trigger signal without frequency relevance. Various kinds of trigger menus
are also shown as follows:
Edge trigger:
Edge trigger mode is to trigger threshold value of input signal edge. That is, to trigger in ascending/
descending edge of input signal when selecting "edge trigger".
Form 2-7
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Operating Manual for UTD2000/3000
Function menu
Type
Selection of
information source
Gradient
Trigger mode
Trigger coupling
33
Setup
Edge
CH1
CH2
EXT
EXT/5
Municipal power
Alteration
Ascend
Descend
Ascend/descend
Automatic
Normal
Single
AC
DC
High-frequency
inhibition
Low-frequency
inhibition
Description
Set CH1 as trigger signal of information source.
et CH2 as trigger signal of information source.
Set EXT TRIG INPUT channel as trigger signal of information source.
Divide outer trigger source by 5 to expand outer trigger level scope.
Set municipal power trigger
ALT TRIG of CH1 and CH2 signals;.
Set ascending edge trigger for signal;
Set descending edge trigger for signal;
Set ascending/descending edge trigger of signal;
Set waveform acquisition without detecting trigger conditions;
Set waveform acquisition after meeting trigger conditions;
Set sampling of a waveform and shutdown after detecting once
trigger;
Obstruct DC component of input signal;
Pass through AC & DC components of input signal;
Inhibit high-frequency components of more than 80kHz for signal;
Inhibit low-frequency components of less than 80kHz for signal
Operating Manual for UTD2000/3000
Pulse width trigger
Trigger time shall be determined for pulse width trigger according to pulse width. You can capture
abnormal pulse by setting pulse width conditions.
Form 2-8 (the first page)
Function menu
Type
Selection of
information
source
Pulse width
conditions
Setup
Pulse width
CH1
CH2
EXT
EXT/5
Municipal power
Alteration
More than
Less than
Equal to
Description
To set CH1 as trigger signal of information source.
To set CH2 as trigger signal of information source.
To set EXT TRIG INPUT channel as trigger signal of information source.
To divide outer trigger source by 5 to expand outer trigger level scope.
To set municipal power for trigger.
ALT TRIG of CH1 and CH2 signals
To trigger when pulse width exceeds set value;
To trigger when pulse width is less than set value;
To trigger when pulse width is equivale
Pulse width
setup
To set pulse width of 20ns to 10s then regulate by multi-purpose knob in
upper part of front panel.
Next page
1/2
Enter into next page.
34
Operating Manual for UTD2000/3000
Form 2-9 (the second page)
Function menu
Type
Trigger polarity
Trigger mode
Trigger coupling
Previous page
2/2
35
Setup
Description
Pulse width
Positive pulse width
Negative pulse width
Automatic
Normal
Single
DC
AC
High-frequency
inhibition
To set positive pulse width as trigger signal;
To set negative pulse width as trigger signal;
The system will acquire waveform data automatically
and display scanning base line on the screen without
trigger signal input. It will convert to trigger scanning
automatically when producing trigger signal.
To produce trigger scanning if any trigger signal is produced.
To produce once trigger then stop during trigger signal input.
High-frequency inhibitionTo pass through AC & DC
components of trigger signal.
To obstruct DC components of trigger signal.
To obstruct pass through of high-frequency components of
signal and only low-frequency components can pass through.
Return to previous page.
Operating Manual for UTD2000/3000
Video touch
To trigger in field or row with NTSC or PAL standard video signals after selecting video trigger for
UTD2025CL oscillograph shown in 5.7-inch or 7-inch screen. Trigger coupling is pre-set to DC. Please
refer to following form for trigger menu.
Form 2-10 Setup of video trigger
Function menu
Type
Setup
Pulse width
CH1
CH2
EXT
Description
Alteration
Selection of
information source
To set CH1 as trigger signal of information source.
To set CH2 as trigger signal of information source.
To set EXT TRIG INPUT channel as trigger signal of
information source.
To set 5 times of attenuation for outer trigger signal as trigger
signal.
ALT TRIG of CH1 and CH2 signals
PAL
NTSC
Video signal to be appropriate to PAL system;
Video signal to be appropriate to NTSC system;
EXT/5
Standard
Synchronization
All rows
Designated row
Odd field
Even field
To set synchronous trigger of video row.
To set synchronous trigger of designated video row for
adjustment by multifunctional knob in upper part of front panel.
To set synchronous trigger for video odd field.
To set synchronous trigger for video even field.
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Operating Manual for UTD2000/3000
Please refer to Figure 2-14 for screen display when
selecting standard system of PAL and row
synchronization as synchronization mode. Please
refer to Figure 2-15 for field synchronization of
synchronization mode.
Figure 2
15 Video trigger: Field synchronization
ALT TRIG mode
ALT TRIGTrigger signal comes from 2 vertical
channels during ALT TRIG. Such trigger mode can be
adopted for synchronous observation of 2 signals
Figure 2
14
Video trigger: Row synchronization
without regard to signal frequency. Please refer to
following figure for trigger alternation waveform
display.
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Operating Manual for UTD2000/3000
Setup of trigger coupling mode
Please enter into trigger setup menu for setup of
trigger coupling mode and gain the most sform
synchronization. Please refer to following form for
menu of trigger coupling mode.
Figure 2 16 Observation of 2 signals with
different frequency by.
Form 2-11 Trigger alternation menu
Function menu
Type
Setup
Edge
Description
Set trigger mode to edge
ALT TRIG of CH1 and
Alternation CH2
Gradient
Ascending Set trigger gradient to
ascending edge.
Set trigger mode as
Trigger mode
Automatic
automatic one
Set trigger coupling
Trigger coupling
AC
modeto AC mode
Trigger source
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Operating Manual for UTD2000/3000
Form 2-12
Function menu
Type
Trigger source
Setup
Description
Gradient
Trigger mode
Coupling
39
Set pass-through obstruction of DC components.
AC
Set pass-through of all components.
DC
High-frequency inhibition Obstruct pass-through of high-frequency part of signal. Only lowfrequency components can pass through.
Low-frequencyinhibition Obstruct pass-through of low-frequency part of signal. Only highfrequency components can pass through.
Operating Manual for UTD2000/3000
Adjustment of hold off time
Adjustment of hold off time can be used to observe complex waveform (such as pulse string series).
Inhibition time refers to waiting period of digital storage oscillograph to start up trigger circuit again.
Digital storage oscillograph will not trigger until inhibition time ends during inhibition period. For instance,
as shown in Figure 2-17, the first pulse among a group of pulse series shall be triggered to set inhibition
time to width of pulse string.
Please refer to following form for hold off menu.
Form 2-13
Function menu
Main time base
View window extension
Hold off
Setup
Description
1. To open main time base;
2. To close view window extension according to main time base after opening
view window extension.
To open extension time base.
To adjust inhibition time.
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Operating Manual for UTD2000/3000
Trigger
Holdoff
Figure 2--17 Hold off used for synchronization
of complex waveform
Operation Description
1. To select edge, trigger source and gradient shown
in TRIG MENU according to synchronization mode of
normal signal then adjust trigger level for stable
waveform display as practicable as possible.
2. To press HORI MENU key to display horizontal
menu.
3. To adjust multi-purpose knob in upper part of
panel to alter inhibition time for stable waveform
41
display as practicable as possible.
Term explanations
1. Trigger source: To gain trigger from many kinds of
information sources, namely, input channel (CH1 &
CH2), external trigger (EXT & EXT/5) and municipal
power.
Input channel The most common trigger
information source is optional input channel
Selected one is used as channel of trigger
information source for normal operation regardless
of input display
External trigger: Such trigger information source
can be used for trigger on the third information
channel during synchronous data acquisition on
channels For instance signals from external clock
or circuit to
measure can be used as trigger information source.
EXT and EXT/5 trigger sources shall use external
trigger signals
Operating Manual for UTD2000/3000
connected to EXT TRIG interface. Signal can be
used for EXT and EXT can be used within signal
trigger level scope of -3V to +3V.
It is allowed to select EXT/5 for oscillograph of 5.7inch screen. Outer trigger shall be divided by 5 so
that trigger scope can expand to -15V to +15V for
trigger of digital storage oscillograph under large
signal.
Municipal power: Such trigger mode can be used
to observe signal with regard to municipal power.
For instance, it can provide relationship between
lighting equipment and power supply equipment so
as to gain stable synchronization.
2 Trigger mode: It is to determine behavior mode
of digital storage oscillograph without trigger event.
This digital storage oscillograph can also provide 3
triggers, namely, automatic, normal and single
trigger modes.
waveform data automatically so as to display
scanning base line on the screen without trigger
signal input. It will convert to trigger scanning
automatically for signal synchronization when
producing trigger signal.
Note: Without trigger signal is allowed under "
automatic" mode when setting scanning waveform to
5-ms/div or less time base.
Normal trigger: Digital storage oscillograph can
not acquire waveform until meeting trigger conditions
under ordinary trigger mode. Trigger scanning can be
produced when producing trigger signal.
Single trigger: User can press "operation" button
once under single trigger mode for entry and trigger
waiting for digital storage oscillograph. It will sample
and display all acquired waveform then stop after
digital storage oscillograph detects once trigger.
Automatic trigger: The system will acquire
42
Operating Manual for UTD2000/3000
3. Trigger coupling: Trigger coupling can determine
review more pre-trigger details. You can observe
category of signal component conveyed to trigger
waveform in ahead of trigger by observing pre-
circuit. Coupling types include DC, AC, low-
trigger data. For instance, burring reason can be
frequency inhibition and high-frequency inhibition.
Pass through all components of signals under
shown by observation and analysis on pre-trigger
DC mode.
Obstruct DC components with signal attenuation
to be less than 400Hz under AC mode.
Obstruct DC components with attenuation of
low-frequency component of less than 80kHz under
"low-frequency inhibition" mode.
Attenuate high-frequency components of more
than 80kHz under "high-frequency inhibition" mode.
4. Pre-trigger/delay trigger: To trigger data acquired
in ahead/after event. Trigger position is often set in
the horizontal center on the screen. You can
observe pre-trigger and delay information of 5div
(or 6div). You can also rotate horizontal position to
regulate horizontal displacement of waveform and
43
data after capturing burring during circuit startup.
Operating Manual for UTD2000/3000
Setup of sampling system
As shown in following figure, ACQUIRE in
control area is function key of sampling
system.
Figure 2 18 Function key of sampling system
User can use ACQUIRE key to pop out sampling
setup menu so as to adjust sampling mode by
control button shown in the menu.
44
Operating Manual for UTD2000/3000
Form 2-14 Sampling menu
Function menu
Obtainment mode
Average times
Sampling mode
Fast acquisition
45
Setup
Description
Sampling
Activate ordinary sampling mode.
Peak-value detection Activate peak-value detection mode.
Average
Set average sampling mode and display average times.
2~256
Real-time
Equivalent
ON
Set average times for step by multiples of 2, namely, 2, 4, 8, 16,
32, 64, 128 and 256. As shown in Figure 2-18, average times can
alter by pressing left multi-purpose knob.
Set sampling mode to real-time sampling mode.
Set sampling mode to equivalent sampling mode.
Acquire by higher screen refreshing rate to reflect dynamic
effect of waveform excellently.
Close fast acquisition.
Operating Manual for UTD2000/3000
It has to observe waveform display variation by
altering obtainment mode. Please refer to Figure 219 and 2-20 for sampled waveform display if signal
contains large noise when adopting 32 times of
average mode or without adopting average mode.
Figure 2-20 Waveform by adopting 32 times of average mode
Note
1 Please select real-time sampling mode for observation
Figure 2
19 Waveform without adopting
of single signal.
2. Please select equivalent sampling mode for observation
of high-frequency periodic signal.
3. Please select peak-value detection mode to avoid mixed
signal envelope. Please select average sampling mode with
step of multiples of 2 for average value to reduce random
noise of displayed signal. Average times can be selected
form 2 to 256.
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Operating Manual for UTD2000/3000
Term explanation
Real-time sampling: It refers to data required for once acquisition.
Equivalent sampling: It refers to repeated sampling mode. It can facilitate careful observation of repeated
periodic signals. It can be adopted to gain horizontal resolution which is higher than real-time sampling
resolution greatly.
Sampling mode: It can be classified into equivalent and real-time modes.
Peak-value detection mode:
Digital storage oscillograph will find out the maximum and minimum input signals within every sampling
interval for waveform display by using such values under such obtainment mode. It can also obtain and
display narrow impulse or they may be omitted for larger noise under such mode. Average mode is as
follows: Digital storage oscillograph may obtain several waveform and calculate average value then
display final waveform under this obtainment mode. Such mode can be adopted to reduce random noise.
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Operating Manual for UTD2000/3000
Setup of display system
As shown in following figure, DISPLAY in control area is function key of display system
Figure 2
Function key of sampling system
Please press DISPLAY button to pop out setup menu shown in following figure. Display mode can be
adjusted by pressing menu control button.
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Operating Manual for UTD2000/3000
Form 2-15 Display menu
Function menu
Display type
Format
Continuous
Waveform brightness
Setup
Vector point
YT
XY
Close
1s
2s
5s
Infinite
1% - 100%
Descriptions
Only to display sampling points by wiring.
Operation mode of digital storage oscillograph
X-Y display mode; X input for CH1 and Y input for CH2;
Real-time updating of screen waveform;
To update after keeping waveform data shown in the screen for 1s;
To update after keeping waveform data shown in the screen for 2s;
To update after keeping waveform data shown in the screen for 5s;
To always keep display of original waveform data shown in the screen
until this function is inactivated if new data is added into display
continuously;
To set waveform brightness (without this function for
UTD2000C/3000C)
Key points:
Display type: To fill in blank between adjacent sampling points during vector display. Only sampling points
will be displayed for point display.
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Operating Manual for UTD2000/3000
Storage and callout
As shown in following figure, STORAGE in MENU
Operation steps
Please press STORAGE Enter into type menus.
control area is function key of storage system.
There are 3 types, namely, waveform, setup and
bitmap.
2. Please refer to Figure 2-16 for selection of type
waveform and entry into following waveform
storage menu. Please call out REF (reference
waveform shown in the second page) from Section
2 of the chapter after saving waveform.
Form 2-16 Waveform storage menu (the first page)
Figure 2 22 Function key (storage) for sampling system
STORAGE key can be used to display storage setup menu. You
can save oscillograph waveform or setup status to internal
storage area or U disk to call out saved waveform by RefA
(or RefB) or call out setup status by STORAGE key. Waveform
display area of oscillograph can be saved to DSO contents in U
disk in a form of bitmap. Saved bitmap can be read by PC computer.
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Operating Manual for UTD2000/3000
Form 2-16
Function menu
Type
Information source
Storage position
Setup
Waveform
CH1
CH2
1 20
Save
Next page
1/2
Figure 2-23 Waveform storage
51
Description
Select waveform storage and callout menu
Select waveform from CH1 channel.
Select waveform from CH2 channel.
1 20 refer to positions to store 20 groups of waveform.
There are 200 groups of waveform positions for storage to USB.
(Storage position and quantity vary with machine model.)
Save waveform
Enter into next page.
Figure 2-24 Waveform storage by U disk
Operating Manual for UTD2000/3000
Form 2-17 Storage menu (the second page)
Function menu
Setup
Magnetic disk
DSO
USB
Storage depth
Previous page
2/2
Ordinary
Long storage
Description
To select internal RAM of digital storage oscillograph then
select external U disk. (This function can not be used until
plugging in U disk.)
To set storage depth to ordinary; (Callout only can be done in
REF area when saving data to U disk.)
To set storage depth to long storage. (Note: This function can
not be activated until plugging in U disk. Callout can not be
done until using loading function of computer communication
software or waveform analysis load when saving data to U disk.)
Return to previous page.
52
Operating Manual for UTD2000/3000
2 As shown in Form 2-18, please select setup and enter into setup storage menu.
Figure 2-25 Storage setup
Form 2-18 Setup of storage menu
Function menu
Setup
Setup
Setup of (storage position)
Description
To select panel setup menu.
1 20
Operation setup to save 20 groups of panels: To select by multipurpose knob in upper part of front panel. (Position and quantity
vary with machine model
Save
53
Storage setup
Recall
Callout setup
Operating Manual for UTD2000/3000
3. As shown in Form 2-19, please select bitmap for entry into bitmap storage menu.
Remark: This function can not be called out until plugging in U disk.
Form 2-19 Bitmap storage menu
Function menu
Bitmap
Storage position
Setup
1 20
Save
Description
Select bitmap menu
200 bitmap data can be saved by selecting multi-purpose knob in
upper part of front panel. (It is 1 to 10 for UTD2000C series.)
Save bitmap data
Figure 2-26 Bitmap storage
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Operating Manual for UTD2000/3000
Setup of auxiliary functions
As shown in following figure, UTILITY in MENU
control area is function key.
Function menu
Self-correction
By detection
Setup
Execution
Description
To carry out self-correction.
To cancel self-correction and
return to previous page.
To set waveform Pass/Fail.
(Only UTD2000E/3000E,
Please refer
UTD2025C/3025C and
to Form 2-23
UTD2025CL have this
function.)
Cancel
Waveform
recording
Figure 2 27 Function key (and function) of
sampling
User can press UTILITY key to pop out setup menu
of auxiliary system function.
Form 2-20 (the first page)
55
Please refer Set waveform recording
to Form 2-22 operation.
Language
Multilanguage Select interface language.
Operating Manual for UTD2000/3000
Form 2-21-1 (the second page)
Setup
Function menu
Fast correction
Interface style
Gridding brightness
ON/OFF
Description
Activate/inactivate fast correction function of channels within scope
of 2mV/div to 10 mV/div. (Only UTD2025C/3025C has this function.)
The first style
The secondstyle
Set 4 interface styles for digital storage oscillograph.
The third style
The fourth style
1% - 100%
Next page
2/3
Adjust gridding brightness of the screen by multi-purpose knob.
UTD2000C/3000C also has no this function.
Enter into next page.
Form 2-21-2 (the third page)
Function menu
System information
Frequency meter
The first page
3/3
Setup
Description
Display information of current oscillograph system.
Activate/inactivate function of frequency meter.
Return to the first page.
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Operating Manual for UTD2000/3000
Form 2-22 Waveform recording menu
Function menu
Setup
Information source
CH1
CH2
CH1+CH2
Description
Select CH1 as recording signal source.
Select CH2 as recording signal source.
Select ct CH1+CH2 as recording signal source.
Record by pressing recording key for synchronous display of
recorded quantity in lower part of the screen.
1. Playback key;
2. Press the key for playback and display of current playback
screen No. in lower right corner of screen. Playback can be
stopped by rotating multi-purpose knob controller in upper part
of panel. However, waveform of a certain screen can be selected
for repeated playback by continuing to rotate it.
3 Press to stop then press
for playback of all items.
Operation
Save
1 ~ 200
Recall
1 ~ 200
Return
57
Stop recording
Save newly recorded waveform for U disk plug-in. Storage
position can be selected by multi-purpose knob.
Call out recorded waveform from U disk then select recording
position by multi-purpose knob.
Return to previous level of menu.
Operating Manual for UTD2000/3000
Form 2-23 By detection
Function menu
Detection status
Setup
Open
Close
Description
Open/close information of waveform pass/fail times
Information source
CH1
CH2
MATH
RefA
RefB
Select CH1 as detected signal source.
Select CH2 as detected signal source.
Select MATH as detected signal source.
Select RefA as detected signal source.
Select RefB as detected signal source.
Output conditions
Pass
Pass/Halt
Fail/Halt
Fail
Output concurrency prompt when detecting waveform pass;
Output and pause when detecting waveform pass;
Output and pause when detecting waveform fail;
Output concurrency when detecting waveform fail;
Template setup
Return
Refer to Form
2-24 for details
Enter into template setup menu.
Return to previous menu.
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Operating Manual for UTD2000/3000
Form 2-24 Template setup
Setup
Function menu
Template output
Horizontal
Vertical
Return
Description
Set horizontal and vertical
Pass/Fail tolerance scope
according to adjustment
1-200Pixel Set horizontal tolerance
scope
1-100Pixel Setvertical tolerance scope
Return to Pass detection
menu
Key note:Key note:
Self-correction: Self-correction procedure is to
correct measurement error caused by digital
storage oscillograph due to ambient variation. You
can operate the procedure according to demand.
Please open power of digital storage oscillograph
then wait for instrument pre-heating for 30 minutes
for more correct calibration. Please press UTILITY
key (as an auxiliary function) for operation
59
according to prompt shown in the screen.
Language selection: There are many kinds of
languages for UTD2000/3000 series digital storage
oscillograph. Please press UTILITY menu button
and select appropriate language.
Operating Manual for UTD2000/3000
Automatic measurement
As shown in following figure, MEASURE is
Application example
automatic measurement function key. You can be
can be used to measure 28 kinds of waveform
familiar with powerful automatic measurement
function of UTD2000/3000 series digital storage
oscillograph gradually by following introduction.
Measurement menu of such series of oscillograph
parameters. User can press MEASURE key Enter
into parameter measurement display menu firstly.
The menu includes 5 areas to display measurement
value at the same time. They correspond to function
keys of F1 to F5 respectively. Please press
corresponding F keys Enter into measurement
category selection menu if measurement category
shall be selected for any area. Measurement
category selection menu can be classified into
voltage and time kinds Enter into voltage or time
Figure 2-28 Function key (automatic measurement)
of sampling system
measurement category respectively. Please press
F1 to F5 to select measurement category then
return to parameter
measurement display menu. In addition,user can
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Operating Manual for UTD2000/3000
press F5 to select "All parameters" to display all
The secondexample: Setup of delay measurement:
voltage/time measurement parameters. User can
Delay measurement function is used for interval
press F2 to select channel to measure. (Channel is
between ascending edges of 2 information sources,
ineffective until opening.) User can press F1 Return
namely, interval from ascending edge of the first
to parameter measurement display menu if not
cycle of a certain information source to that of the
altering current measurement category. The first
first cycle of additional information source.
example: Steps are as follows if displaying
Measurement steps are as follows:
1. To refer to above example and select area
measured peak value of CH2 channel in F1 area.
1. To press F1 key Enter into measurement
displayed by delay measurement value after
category selection menu;
2. To press F2 to select CH2;
3. To press F3 to select voltage;
4. To press F5 (shown in the second page, 2/4) to
entering into measurement menu (shown in 3/3
see that F3 position is "peak value"
5. To press F3 to select "peak value" and return to
3. To select reference information source of CH1
parameter measurement display menu
automatically;
Peak value is displayed in F1 area on the
homepage of measurement menu.
61
page of time category);
2. To select reference information source of CH1
then select delay information source of CH2;
then select delay information source of CH2;
4. To press F5 to confirm that delay measurement is
displayed in selected area.
Operating Manual for UTD2000/3000
Automatic measurement of voltage parameters
Voltage parameters which can be measured by
bottom to GND (ground);
Overshoot: Ratio of difference of the maximum
UTD2000/3000 series oscillograph automatically
waveform value and top value and amplitude;
Preshoot: Ratio of difference of the minimum
are as follows:
Peak value (Vpp): Voltage from the highest
waveform point to the lowest waveform point;
The maximum value (Vmax): Voltage from the
highest waveform point to GND (ground);
The minimum value (Vmin): Voltage from the lowest
waveform point to GND (ground);
Middle value (Vmid): Half of sum of waveform top
waveform value and bottom value and amplitude;
Average value: Average amplitude of signals within
a cycle;
Root-mean-square (Vrms): It is effective value.
Root-mean-square refers to DC voltage of
converted energy within 1 cycle according to AC
signal to correspond to equivalent energy.
and bottom voltage;
Amplitude (Vamp): Voltage from waveform top to
bottom;
Middle value (Vmid): Half of sum of waveform top
and bottom voltage;
Top value (Vtop): Voltage from flat waveform top to
GND (ground);
Bottom value (Vbase): Voltage from waveform
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Operating Manual for UTD2000/3000
Automatic measurement of time parameters
UTD2000/3000 series oscillograph can measure
descending edge to descending edge;
Positive duty cycle (+Duty): It refers to ratio of
signal frequency, cycle, ascending time,
positive pulse width and cycle;
Negative duty cycle (-Duty): It refers to ratio of
descending time, positive pulse width, negative
pulse width, delay (of 9 combinations), positive duty
cycle, negative duty cycle and 10 time parameters
automatically. Definitions of such time parameters
negative pulse width and cycle;
Measurement menu
Operation Description: Please press MEASURE
are as follows:
RiseTime: It refers to period when waveform
key so that the screen can display 5 measurement
amplitude increases from 10% to 90%;
FallTime: It refers to period when waveform
key of F1 to F5 so that the screen enters into
amplitude decreases from 90% to 10%;
Positive pulse width (+Width): It refers to pulse
width of positive pulse under 50% of amplitude;
Negative pulse width (-Width): It refers to pulse
width of negative pulse under 50% of amplitude;
Delay (ascending edge): It refers to delay from
ascending edge to ascending edge;
Delay (descending edge): It refers to delay from
63
values. As shown in Form 2-25, user can press any
measurement selection menu.
Operating Manual for UTD2000/3000
Form 2-25
Information source
Setup
Description
Return to parameter measurement display menu.
CH1
Select channel of measurement parameters.
CH2
Function menu
Return
Select channel of measurement parameters.
Enter into voltage parameter menu.
Voltage kind
Time kind
All parameters
Enter into time parameter menu.
Display/close all measurement parameters.
Of which: Menu included by "voltage kind" is shown in Form 2-26 to 2-29.
Form 2-26
Function/measurement item
Return
Preshoot
Description
Return to menu shown in Form 2-25.
Return to parameter measurement display menu and
substitute original position parameter after selection.
he same as above
Amplitude
Overshoot
The same as above
Next page (1/4)
Page turning
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Operating Manual for UTD2000/3000
Form 2-27
Function/measurement item
Previous page
Average value
Peak value
Root-mean-square
Next page (2/4)
Description
Return to previous page.
Return to parameter measurement display menu and substitute
original position parameter after selection.
he same as above
he same as above
Page turning
Form 2-28
Function/measurement item
Previous page
Top value
Bottom value
Middle value
Next page (3/4)
65
Description
Return to previous page.
The same as above
Return to parameter measurement display menu and substitute
original position parameter after selection.
The same as above
Page turning
Operating Manual for UTD2000/3000
Form 2-29
Function/measurement item
Previous page
The maximum value
Description
Return to previous page.
Return to parameter measurement display menu and substitute
original position parameter after selection.
The minimum value
The same as above
Next page (4/4)
Return to the first page (shown in Form 2-26)
Menu included by "time category" is shown in Form 2-30 to Form 2-32.
Form 2-30
Function/measurement item
Return
Frequency
Cycle
RiseTime
Next page (1/3)
Description
Return to menu shown in Form 2-25.
Return to parameter measurement display menu and substitute
original position parameter after selection.
The same as above
The same as above
Page turning
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Operating Manual for UTD2000/3000
Form 2-31
Function/measurement item
Previous page
Frequency
Cycle
RiseTime
Next page (2/3)
Description
Return to previous page.
Return to parameter measurement display menu and substitute
original position parameter after selection.
The same as above
The same as above
Page turning
Form 2-32
Function/measurement item
Previous page
Delay
Description
Return to previous page.
Enter into delay option menu (shown in Form 2-32a) after
selection.
Positive duty cycle
Return to parameter measurement display menu and substitute
original position parameter after selection.
Negative duty cycle
The same as above
Return to the first page (shown in Form 2-30).
The first page (3/3)
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Operating Manual for UTD2000/3000
Form 2-32a
Setup
Function
Description
CH1/CH2 Select measured channel.
Channel
/MATH
Channel
CH1/CH2
/MATH
Cursor measurement
User can press CURSOR button to display
measurement cursor and cursor menu then use
multi-purpose knob controller to alter cursor
position. As shown in following figure, CURSOR in
MENU control area is cursor measurement function
key.
Enter
Return to parameter
measurement display menu
and substitute original
position parameter after
selection.
Figure 2-29 Function key (or cursor) of sampling
system
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Operating Manual for UTD2000/3000
User can move cursor for measurement under
secondcursor will appear at the same time. Cursor
CURSOR mode. There are 3 modes, namely, voltage,
position on the screen can be adjusted by multi-
time and tracing.
purpose knob controller. User can press SELECT key
V can be measured by pressing
SELECT and COARSE keys on the panel and multi-
(or multi-function knob key) to select cursor to adjust.
purpose knob controller to adjust positions of 2
Displayed reading is also time or voltage between 2
cursors respectively during voltage measurement.
Similarly, it can be measured if selecting time. Cursor
cursors.
2. Tracing mode: Horizontal and vertical cursors can
of digital storage oscillograph can also trace signal
intersect to become a crossing cursor. Crossing
variation automatically under tracing mode with
cursor can position on the waveform automatically to
waveform display.
Remark: For 5.7-inch oscillograph
1. Effect of SELECT key is to select the cursor.
2. Effect of COARSE key is to adjust movement speed
adjust horizontal position of crossing cursor on the
of cursor.
For 7-inch oscillograph:
User can press multi-function knob key to select the
cursor. Movement speed of cursor can also alter
according to rotation speed.
1. Voltage/time measurement mode: The first or
69
waveform by rotating multi-purpose knob controller.
Digital storage oscillograph can also display
coordinate of cursor point at the same time.
3. Measurement value will be displayed in upper
right corner of the screen automatically when
opening cursor function.
Operating Manual for UTD2000/3000
Usage of operation key
RUN/STOP key is in upper right corner of front
As shown in above figure, automatic setup is to
panel of digital storage oscillograph. User can
adjust vertical deflection coefficient and horizontal
press the key so that green lamp is on to show
time base gear automatically for stable waveform
operation status. Red lamp can be on after pressing
display on the screen according to waveform
the key to show stop status.
amplitude and frequency when user presses AUTO
simplify operation. Digital storage oscillograph can
key. System setup is shown in following form during
automatic setup:
Figure 2-30 Operation/stop key
Automatic setup
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Operating Manual for UTD2000/3000
Function
Setup
Obtainment mode
Display format
Sampling
Horizontal position
Second/grid
Trigger coupling
Hold off
Trigger level
Set to YT
Automatic adjustment
Adjustment according to signal
frequency
AC
The minimum value
Trigger gradient
Set to 50%
Automatic
Set to CH1; Set to CH2 when
exerting on signal for it if there
is no signal for CH1;
Ascending
Trigger type
Edge
Vertical band width
All
Adjustment according to signal
amplitude
Trigger mode
Trigger source
Volt/grid
71
RUN/STOP: To acquire waveform or stop
acquisition continuously;
The key can be pressed for switchover of waveform
sampling between operation and stop. User can
press the key under operation status so that green
lamp is on. "Auto" can be displayed in upper part of
the screen. Old digital storage oscillograph can
acquire waveform continuously while red lamp is on
by pressing the key under stop status. Digital
storage oscillograph can stop acquisition when
displaying "Stop" in upper part of the screen.
Operating Manual for UTD2000/3000
Chapter 3: Application Example
The first example: Measurement of simple signal
It has to observe a unknown signal in the circuit for
2 Automatic measurement of signal voltage and
time parameters
Digital storage oscillograph can measure most of
display signals automatically. Please operate
quick display and measurement of signal frequency
according to following steps for measurement of
and peak value.
1. Please operate according to following steps for
signal frequency and peak value.
To press MEASURE key to display automatic
quick signal display:
1. Please operate according to following steps for
measurement menu;
To press F1 to enter into measurement menu
quick signal display:
To set probe menu attenuation coefficient to 10*
category for selection
To press F3 to select voltage category
To press F5 to turn to 2/4 page then press F3 to
and set switch on the probe to 10*.
To connect CH1 probe to measured point of
circuit.
To press AUTO button.
Digital storage oscillograph can set automatically
for the best waveform display. You can also adjust
vertical or horizontal gear on above basis so that
select measurement type of peak value
To press F2 to enter into measurement menu
category for selection then press F
to select
time category
To press F2 to select measurement type of
frequency.
waveform display can meet related requirements.
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Operating Manual for UTD2000/3000
The secondexample: Delay observation of sine
wave signal by circuit
The same as above example, please set
attenuation coefficient of probe and digital storage
oscillograph to 10*. Please connect CH1 channel
of digital storage oscillograph to circuit signal input
terminal and connect CH2 channel to output
Figure 3-1 Automatic measurement
terminal.
Operation steps:
1. Signal display of CH1 and CH2 channels:
To press AUTO button
To continue to adjust horizontal or vertical gear
so that waveform display can meet your test
requirements.
To press CH1 key to select CH1 then rotate
vertical position knob to adjust vertical position
of CH waveform
To press CH2 key to select CH2 then adjust
vertical position of CH2 waveform to facilitate
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Operating Manual for UTD2000/3000
comparison without waveform overlapping for the
first and second channels.
2. To measure delay of sine signal caused by
circuit then observe waveform variation.
Delay of automatic measurement channel
To press MEASURE button to display automatic
measurement menu;
To press F1 key to enter into measurement menu
category for selection;
To press F4 key to enter into time measurement
Figure 3-2: Waveform delay
parameter list;
To press F5 key twice to enter into 3/3 page;
To press F2 key to select delay measurement;
To press F1 key to select CH1 then press F2 key to
select CH2 then press F5 as enter key
You can see delay value from "CH1-CH2 delay" in
F1 area.
Observation of waveform variation (shown in
following figure)
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Operating Manual for UTD2000/3000
The third example: Capture of single signal
Advantages and characteristics of digital storage
gradient to ascend, trigger mode of single mode and
oscillograph include convenient capture of
of F1 to F5 respectively under this menu.
To adjust horizontal time base and vertical gear to
aperiodic signals such as pulse and burring, etc. It
has to know this signal to set trigger level and
trigger edge to capture a signal signal. For
trigger coupling to AC by using menu operation keys
appropriate scope
To rotate TRIGGER LEVEL knob to adjust
set trigger edge to ascending edge trigger if pulse is
appropriate trigger level
To press RUN/STOP execution button to wait for
a logic signal of TTL level. User can observe it by
signals which meet trigger conditions. Once
automatic or ordinary trigger mode so as to
sampling can be done for display on the screen if a
determine trigger level and trigger edge for
certain signal reaches set trigger level. Occidental
unknown signals.
Operation steps are as follows:
1. To set attenuation coefficient of probe and CH1
events can be captured easily by utilizing the
channel like the previous example;
2. To set triggers;
To press MENU button in trigger control area to
than normal signal slightly then press
display trigger setup menu
To set trigger type to edge, trigger source to CH1,
and after trigger during burring. Horizontal
instance: Trigger level shall be set to about 2V and
75
function. For instance: Sudden burring with large
amplitude
Please set trigger level to be higher
RUN STOP button for waiting
The machine will
trigger automatically and record waveform before
POSITION knob in horizontal
Operating Manual for UTD2000/3000
control area on the panel can be rotated to alter
The fourth example: To reduce random noise of
horizontal trigger position so as to gain negative
delay trigger with different length to facilitate
the signal
You can adjust setup of digital storage oscillograph
observation of waveform before burring.
for overlapping of random noise to tested signal so
as to filter or reduce noise and avoid disturbance to
ontology signal during measurement. (Please refer
to following figure for waveform.)
Figure 3-3 Single signal
Figure 3-4 To reduce random noise of signals
Operation steps are as follows:
1. As shown in previous example, please set
attenuation coefficient of probe and CH1 channel.
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Operating Manual for UTD2000/3000
2. To connect signals for stable waveform display on
digital storage oscillograph.
Please refer to previous example for operation.
Please refer to previous chapter for adjustment of
noise respectively to gain stable trigger
4. To reduce display noise by setting sampling
modes.
To adopt average sampling mode to eliminate
horizontal time base and vertical gear.
3. To improve trigger by setting trigger coupling.
(1) To press MENU button in trigger area to display
trigger setup menu.
(2) To set trigger coupling to low-frequency
measured signal. Signal details can be observed
conveniently by reduced random noise after gaining
inhibition or high-frequency inhibition. Low-
average value. Detailed operation is as follows
frequency inhibition is to set a high-pass filter to
To press ACQUIRE button in panel menu area to
filter low-frequency signal component of less than
display sampling setup menu
80kHz and allow pass through of high-frequency
menu operation key to set obtainment mode to
signal component. High- frequency inhibition is to
average status. (As shown in following figure,)
set a low-pass filter to filter high-frequency signal
please adjust average times by pressing F2 key as
component of more than 80kHz and allow pass
menu operation key with step from 2 to 256 by
through of low-frequency signal component. It can
multiples of 2 so that waveform display can meet
be set to inhibit low-frequency or high-frequency
77
display of random noise to thinner waveform and
observation & test equirements.
facilitate observation & measurement if waveform is
thickened by overlapping random noise to
To press F1 key as
Operating Manual for UTD2000/3000
Figure 3-5 Inhibited signal noise
To reduce display noise by reducing waveform
brightness.
Note: Average sampling mode can be used to slow
down updating speed for waveform display as
normal phenomenon.
The fifth example: Application cursor
measurement
This digital storage oscillograph can measure 28
kinds of waveform parameters automatically. All
automatic measurement parameters can be measured
by cursor. Waveform time and voltage can be
measured quickly by using cursor.
To measure 1 staircase voltage of staircase signal
Please operate according to following steps to
measure 1 staircase voltage of staircase signal:
1. To press CURSOR key to display cursor
measurement menu.
2. To press F1 key as menu operation key to set
cursor type to voltage.
3. To rotate multi-purpose knob controller to place the
first cursor to 1 staircase of staircase signal.
4. To press SELECT or PUSHSELECT to select the
cursor then rotate multi-purpose knob controller to
place the secondcursor to another staircase of
staircase signal.
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Operating Manual for UTD2000/3000
V
namely
pressure difference can be shown
in cursor menu automatically
Please refer to following figure for details.
Note: Please set cursor type to time if onlying
The sixth example: Application of X-Y function
To review phase location difference of signals of 2
channels.
Example: Phase location variation caused by 1
adopting the secondstep as above for time
circuit for tested signals. Please connect digital
measurement by cursor.
storage oscillograph to circuit to monitor
input/output signal of circuits. Please operate
according to following steps to review input/output
terminal of circuits by way of X-Y coordinate
diagram.
1. To set probe menu attenuation coefficient to 10*
and set switch on the probe to 10*.
2. To connect CH1 probe to network input then
connect Ch2 probe to network output.
3. To press CH1 and CH2 menu keys and open 2
Figure 3-6 Voltage difference of signal by cursor
measurement
79
channels if they have not been displayed.
4. To press AUTO button.
5. To adjust vertical scale knob for approximate
equivalent display amplitude of 2 loops of signals.
Operating Manual for UTD2000/3000
6. To press DISPLAY menu key to call out display
control menu.
7. To press F2 to select X-Y. Digital storage
location difference angle between channels. Please
oscillograph will display input/output characteristics of
Therefore, phase location difference angle is
circuit under Lissa Jous's figure mode.
8. To adjust vertical scale and vertical position knob to
calculated as follows
reach the best effect for waveform.
9. (As shown in following figure), please observe and
difference angle shall be within Quadrant I or IV
calculate phase location difference by elliptic
is within Quadrant I or III. Calculated value is within
oscillograph figure method.
( 2 ~ ) or ( ~ 3 ) if main axle of ellipse is within
Signal must be in the
horizontal center
refer to above figure for definition of A, B, C and D.
?arcsin
(namely,
C D
=?arcsin
A B
or
Calculated phase location
(0~ 2 ) or ( 32 ~ 2 ) if main axle of ellipse
2
Quadrant II or IV. Additionally, frequency and phase
location relationship between 2 signals can be
calculated according to figure if frequency or phase
location difference of 2 measured signals is integral
multiple.
Figure 3-7
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Operating Manual for UTD2000/3000
10.Form of X Y phase location difference
Frequency
ratio of
signal
1:1
Phase location difference
The seventh example: Trigger of video signal
Video trigger function can be used for all modes
except UTD2000L/2000EX series. (Of which:
0°
45°
90°
180°
270° 360°
UTD2025CL has video trigger function.)
It has to adopt video trigger to gain stable video
output signal display for observation of a certain
video circuit.
Trigger of video field
Please operate according to following steps for
trigger in video field.
1. To press[ MENU ]button in trigger control area to
display trigger menu.
2. To press[ F1] key as menu operation key to select
video type.
3. To press[ F2] key as menu operation key to set
trigger source to CH1.
4. To press[ F3] key as menu operation key to select
video standard of PAL.
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Operating Manual for UTD2000/3000
5. To press [F4] key as menu operation key to select
synchronization of odd field or even field.
6. To adjust horizontal time base by rotating
horizontal SCALE knob in horizontal control area so
as to gain clear waveform display.
Trigger of video row
Please operate according to following steps for
trigger in video row:
1. To press [MENU] button in trigger control area to
display trigger area.
2. To press[ F1] key as menu operation key to select
video.
3. To press [F2] key as menu operation key to set
trigger source to Ch1.
4. To press[F3] key as menu operation key to select
video standard of PAL.
5. To press[ F4] key as menu operation key to select
synchronization to designated row.
6. To rotate multi-purpose knob controller for trigger
Figure 3-8 Trigger of video field
in any row.
7. To adjust horizontal time base by rotating
horizontal SCALE knob in horizontal control area so
as to gain clear waveform display.
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Operating Manual for UTD2000/3000
Figure 3-9 Trigger of video row
Pass FailInterface Schematic
Rear panel of Pass / Fail output
83
The eighth example: Pass/Fail detection
It has to check if input signal is within rule scope or
not. Fail refers to out of scope and Pass refers to
within the scope. Pass/Fail signal can be shown by
output port of the rear panel.
1. To press[UTILITY] button then press[F2]Enter into
Pass/Fail menu.
2. Setup of information source: Enter into Pass/Fail
menu then press[F2] to select information source.
3. Template setup: To press[F4] Enter into template
setup menu (Template). To press[F2] and[F3] shown
in Template menu to set horizontal and vertical
tolerance scope by multi-function knob, (namely, 1200Pixel toward horizontal direction and 1-100Pixel
toward vertical direction.) Please press F4 finally
Return to Pass/Fail menu.
4. Setup of output conditions: To press[F3] to set
output conditions shown in Pass/Fail menu.
5. To begin detection: To press[F1] to open
detection status shown in Pass/Fail menu.
Operating Manual for UTD2000/3000
The ninth example: Usage of updating
procedure of U-disk
Updating procedure of U-disk can be used more
conveniently and flexibly. Please operate according to
following steps if using this function:
1. To download procedure documents to update from
Internet then save them in U-disk. (It is suggested to
use U-disk suggested by us.)
2. To close oscillograph and insert U-disk then open
oscillograph.
3. To turn to confirmation interface of whether to
then press[F5] for updating).
4. To wait for updating for prompt of successful
updating. Please power off oscillograph then open it to
fulfill updating procedure.
Note:
1. Please wait for updating for several minutes.
2. It is not allowed to power off oscillograph or plug
out U-disk during updating to avoid updating failure
or unforeseenable error.
3. Please power off oscillograph then open it for reupdating after updating failure.
update it or not if there is only 1 procedure document
in U-disk. Please press[F5] for exit or press F1 to exit
procedure updating. Document selection interace will
appear if there are at least 2 procedure documents in
U-disk. Please press[F5] key for confirmation (or
press[F1] to exit procedure updating). Please turn to
confirmation interface of whether to update it or not
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Operating Manual for UTD2000/3000
The tenth example: Usage of storage function
Storage functions of oscillograph include setup
storage, waveform storage, bitmap storage and
specific screen copy function of UTD2000L/2000EX
series of oscillograph.
1. Setup of storage function:
It has to select display channel, trigger channel,
vertical and horizontal gears of oscillograph for
setup. Please press[STORAGE] key to select
torage type of "setup" by pressing[F1 ]key. As
shown in following figure, it has to select position to
save by multi-function button then press F3 for
saving.
Figure 3-10 Saving setup interface
It can be tested directly during next test after saving
setup to reduce re-setup process. UTD2000C series
of oscillograph can save 10 kinds of setup while
UTD2000E and UTD2000L/2000EX series of
oscillograph can save 20 kinds of setup.
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Operating Manual for UTD2000/3000
2. Waveform storage function:
UTD2000 series of oscillograph can provide waveform
storage function. User can press[STORAGE]key and
[F1] key to select storage type of "waveform". User can
press [F2]key to select channel to save waveform then
press[F5]Enter into next page. Magnetic disk in F1
menu position can designate storage position and
default storage position is digital storage oscillograph
(DSO) without plugging in U-disk. Stored magnetic disk
position can be [DSO] or [USB] after plugging in U-disk.
Default storage depth shown by F2 is ordinary and
saved waveform only can be displayed by oscillograph.
Storage depth can be selected to long storage to save
".data" for exportation by waveform analysis software
when plugging in U-disk and selecting magnetic disk
position to [USB]. It is allowed to analyze content data
of every point of saved waveform. User can also press
F5 Return to previous menu then select storage
position by multi-function button then press [F3] for
saving.
Figure 3-11 Waveform storage
Figure 3-12 Waveform storage by U-disk
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Operating Manual for UTD2000/3000
be recalled by short-cut key of [REF] on the panel
3. Bitmap storage function:
As shown in following figure, user can press[ F1]
for UTD2000C and UTD2000E series of
menu key of STORAGE main menu to select storage
oscillograph. User can press [F3] shown in the
type of "bitmap" after plugging in U-disk and
second page of STORAGE main menu for recall for
successful connection of oscillograph. User can
UTD2000L/2000EX series of oscillograph.
rotate multi-function knob to select saved bitmap
As shown in following figure, saved waveform can
No. Saved bitmap in U-disk with ".BMP" format can
be read out by computer directly.
Figure 3-13 Vertical control panel of 5.7-inch screen
Figure 3-14 Bitmap storage
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Operating Manual for UTD2000/3000
4. PrtSc copy & storage function
There is 1 PrtSc key in upper left corner of the screen
for UTD2000L/2000EX series of oscillograph. User
can press the key for screen copy after plugging in Udisk. Displayed image can be saved in U-disk by way
of ".BMP" format.
Figure 3-15 Screen copy
Chapter 4: System Prompt and
Troubleshooting
Introduction to System Prompt
Regulation to the extreme: It prompts that multipurpose knob has been regulated to the greatest
extent under current status and continued adjustment
is not allowed. The prompt will display when
regulating vertical deflection coefficient switch, time
base switch, X displacement, vertical displacement
and trigger level to the terminal.
Successful connection of U-disk: The prompt will
display on the screen after connecting U-disk to
digital storage oscillograph and correct connection.
Plug-out of U-disk: The prompt will display on the
screen when plugging out U-disk from digital
storage oscillograph.Saving: The prompt will
display on the screen with schedule bar below it
when saving waveform
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Operating Manual for UTD2000/3000
Loading: The prompt will display on the screen with
schedule bar below it when calling out waveform.
Troubleshooting
1. Please operate according to following steps for
to BNC (namely, channel connector) or not.
To check if probe is connected to articles to
measure or not normally.
To check if signals are produced or not for
black panel without display for digital storage
articles to measure. (Channels with signal and
oscillograph after pressing power switch.
To check if power plugs are connected with
those with any problem can be connected to find
normal power supply or not.
To check if power switch is connected or not.
To start up the instrument again after above
inspection.
Please contact UNI-T for service if the product
out reasons
To acquire signals once again.
3. Measured voltage amplitude is 10 times larger or
smaller than actual value. It has to check if channel
attenuation coefficient is consistent with
still can not be used normally
2. Please operate according to following steps if
there is no signal waveform in the image after signal
trigger menu to check if it is consistent with input
acquisition.
To check if probe is connected to signal
channel of actual signal or not.
Inspection of trigger type: General signals shall
connection wire or not normally.
To check if signal connection wire is connected
89
attenuation multiple of used probe or not.
4. With instable waveform display:
To inspect setup of trigger source shown in
be inspected by edge trigger mode while video
trigger
Operating Manual for UTD2000/3000
mode shall be used for video signals. Waveform can
not be displayed stably until setting correct trigger
mode.
Please strive to set coupling to high-frequency
To reduce average times.
7. Staircase waveform display
As normal phenomenon, horizontal time base
can increase under super-low horizontal time base
inhibition and low-frequency inhibition display to
gear so as to increase horizontal resolution and
filter high low frequency noise triggered by
improve display.
Possible display type is vector and sampling
interference
5. To press RUN/STOP key without any display:
To check if trigger mode of trigger menu is in
points can be connected for staircase waveform
display. Display type can be set to point display
normal or single gear or not. It has to check if trigger
level is out of waveform scope or not.
Trigger level shall be in the middle or trigger mode
shall be set to AUTO gear if yes.
To press AUTO key for automatic setup as
above.
6. Display speed will reduce after opening average
time sampling mode.
In general speed will reduce normally if
average times exceed 32
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Operating Manual for UTD2000/3000
Chapter 5: Appendix
Appendix A: Technical Indicators
Unless otherwise specified, all technical dimensions are appropriate to probes by setting attenuation
switch to 10* and UTD2000/3000 series digital storage oscillograph. Digital storage oscillograph must
meet 2 conditions as follows to meet such dimension standards:
Instrument must operate under regulated operation temperature for more than
continuously
Be sure to open system function menu and execute
operating temperature reaches or exceeds
with "typical" pattern.
91
self-correction
minutes
procedure if variation scope of
. All dimensions shall be guaranteed except dimension
Operating Manual for UTD2000/3000
Technical Indicators
Sampling
Sampling mode
500MS/s
25GS/s
UTD2000E/3000E
1GS/s
50GS/s
UTD2052CL
500MS/s
25GS/s
UTD2052CEX/UTD2102CEX
Average
value
Equivalent
UTD2000C/3000C
Sampling
rate
Real-time
1GS/s
50GS/s
N can be selected from 2, 4, 8, 16, 32, 64, 128 and 256 after sampling all channels for
N times at the same time.
Note: Real-time sampling rate is 250MS/s without equivalent sampling for UTD2025C, UTD3025C and
UTD2025CL.
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Operating Manual for UTD2000/3000
Input
Input coupling
Input impedance
DC, AC, GND
UTD2000C/3000C: 1?2% M for parallel connection to 24?3pF;
UTD2000E/3000E: 1?2% M
for parallel connection to 24?3pF
(for machine model of at most 100MHz);1?2% M for parallel connection
to21?3pF (for machine model of 150MHz to 200MHz);
UTD2000L/2000EX: 1?2% M for parallel connection to 24?3pF;
Probe attenuation coefficient
1×, 10×, 100×and 1000×
The maximum input voltage
400V (DC + AC peak value and input impedance of 1M
150ps
(Typical) delay between channels
93
)
Operating Manual for UTD2000/3000
Horizontal
Waveform interpolation
Horizontal resolution
Record length
Sin(x)/x
UTD2000C/3000C /UTD2000E/3000E /UTD2000L:25points/div
UTD2000EX 50points/div
Sampling point of 2×512k
Storage depth
25k(UTD2000C/3000C:2.5k for UTD2025C/3025C:4k)
Scanning scope
UTD2000C/3000C 2ns/div-50s/div (200MHz, 150MHz)
UTD2000E/3000E 5ns/div-50s/div (100MHz, 80MHz, 60MHz and 40MHz);
20ns/div-50/div (25MHz)
UTD2000EX 2ns/div-50s/div (UTD2052CEX, UTD2102CEX)
5ns/div-50s/div (UTD2052CL)
UTD2000L
10ns/div-50s/div (UTD2025CL)
Precision of sampling rate
and delay time
Measurement precision
(full band width) for
interval ( T)
94
?50ppm (for any interval of at least 1ms)
Single mode: ?(1 sampling interval+50ppm×reading+0.6ns)
16 average values: ?
sampling interval +50 ppm × reading +0.4 ns
Operating Manual for UTD2000/3000
Vertical
Analog digital converter (A/D)
8-bit resolution with synchronous sampling for 2 channels
Scope of deflection coefficient
(V/div)
Displacement scope
UTD2000C/3000C/UTD2000E/3000E: 2mV/div~5V/div (in input BNC);
UTD2000L/2000EX: 1 mV/div~20V/div (in input BNC)
(Typical) optional band width limitation
20MHz
Low-frequency response
(AC coupling, -3dB)
DC gain precision (by adopting sampling
or sampling mode of average value)
DC measurement precision (by adopting
average sampling mode)
95
?10div (Of which: ?5div for UTD2202E/3202E)
10Hz (in BNC)
UTD2000C/UTD3000C, UTD2000E/UTD3000E:
?4% if vertical sensitivity is 2 mV div or 5 mV div;
?3% if vertical sensitivity is 10 mV div to 5 V div;
UTD2000 L/2000EX:
?5 % if vertical sensitivity is 1mV div or 2mV div;
?4% if vertical sensitivity is 5mV div;
?3% if vertical sensitivity is 10 mV div to 20V div;
UTD2000C/UTD3000C, UTD2000E/UTD2000E:
If vertical displacement is 0 and N 16
?(4% × reading+0.1 grid+1mV) by selecting 2mV/div or 5mV/div;
?(3% × reading+0.1 grid+1mV) by selecting 10mV/div to 5V/div;
If vertical displacement is not 0 and N 16
Operating Manual for UTD2000/3000
DC measurement precision (by adopting
average sampling mode)
?
3% × reading+vertical displacement reading)+( 1% × vertical
displacement reading)
To add 2mV when setting from 2mV/div to 200mV/div: To add set
value by 50mV when setting from 200mV/div to 5V/div;
UTD2000L/2000EX:
If vertical displacement is 0 and N 16
? 5% × reading+0.1 grid+1mV) by selecting 1mV/div or 2mV/div;
?(4% × reading+0.1 grid+1mV) by selecting 5mV/div;
?(3% × reading+0.1 grid+1mV) by selecting 10mV/div to 20V/div;
If vertical displacement is not 0 and N 16
× reading+vertical displacement reading)+(1% × vertical
0.2 div;
displacement reading)
To add 2mV when setting from 5mV/div to 200mV/div: To add set
value by 50mV when setting from 200mV/div to 20V/div;
Measurement precision of voltage
difference ( V) (by adopting sampling
mode of average value)
Voltage difference between any 2 points on the waveform after
calculating average value for at least 16 captured waveform under the
same setup and environment conditions: ?(3%×reading+0.05div)
Note: Deflection coefficient scope of UTD2025C/3025C is 2mV/div ~ 10V/div (in input BNC).
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Operating Manual for UTD2000/3000
band width
series
model
UTD2025C UTD3025C
UTD2042C
UTD3042C
analog band width single band width RiseTime
25MHz
14ns
25MHz
8.7ns
40MHz
40MHz
80MHz
60MHz
80MHz
5.8ns
4.3ns
UTD3102C
100MHz
100MHz
3.5ns
UTD2152C UTD3152C
UTD2202C UTD3202C
UTD2000C 3000C
150MHz
200MHz
100MHz
2.3ns
100MHz
1.8ns
UTD2062C UTD3062C
UTD2082C UTD3082C
UTD2102C
60MHz
UTD2042CE
UTD2062CE
40MHz
60MHz
40MHz
60MHz
8.7ns
UTD2082CE
UTD3082CE
80MHz
80MHz
4.3ns
UTD2102CE
UTD3102CE
100MHz
100MHz
3.5ns
UTD2152CE
UTD2202CE
UTD2000E 3000 E
UTD3042CE
UTD3062CE
UTD3152CE
UTD3202CE
150MHz
200MHz
100MHz
100MHz
2.3ns
25MHz
25MHz
50MHz
14ns
50MHz
100MHz
7ns
UTD2000L
UTD2000EX
UTD2052CEX
50MHz
50MHz
UTD2102CEX
97
UTD2025CL
UTD2052CL
100MHz
5.8ns
1.8ns
7ns
3.5ns
Operating Manual for UTD2000/3000
Trigger
Trigger sensitivity
1div
Internal
(Typical) precsion of trigger
level for signal of which
RiseTime or DescendTime is
not less than 20ns
EXT
?3V
EXT/5 *
Trigger level scope
?5div away from screen center
?15V
Internal
?(0.3div
EXT
?(6% of set value+40mV)
EXT/5 *
?(6% of set value+200mV)
V/div) (within scope of ?4div from screen center)
Pre-trigger ability
Normal mode/scanning mode, pre-trigger/delay trigger with adjustable
pre-trigger depth
Inhibition scope
UTD2000C/3000C/UTD2000E/3000E: 100ns-1.5s
UTD2000L/2000EX: 80ns-1.5s
(Typical) level set to 50%
Edge trigger
Operation if frequency of input signal is not less than 50Hz
Edge type
Pulse width trigger
Trigger mode
Pulse width scope
Ascend, descend, ascend & descend (while UTD2000C has no "ascend & descen"
function);
To be more than, less than or equivalent to positive/negative pulse width;
20ns-10s (UTD2025/3025:40ns-25s)
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Operating Manual for UTD2000/3000
Video trigger*
Trigger sensitivity
(typical video trigger)
Internal
EXT
EXT/5*
Signal system and row/
field frequency (video
trigger type)
To support standard NTSC and PAL; Scope of row quantity is 1-525 (NTSC)
and 1-625 (PAL)
ALT TRIG
CH1 trigger
CH2 trigger
Edge, pulse width and video
Edge, pulse width and video
Note
99
Peak value of 2div
400mV
2V
UTD 2052CL and UTD2052CEX 2102CEX has no EXT 5 function and video trigger function
Operating Manual for UTD2000/3000
Measurement
Manual mode
Voltage difference ( V) between cursors;
Time difference ( T between cursors;
Reciprocal of T
T
Tracing mode
Voltage and time of waveform point
Cursor
It is allowed to display cursor during automatic measurement.
Automatic
measurement
Peak value, amplitude, the maximum value, the minimum value, top value, bottom value,
middle value, average value, root-mean-square, overshoot, preshoot, frequency, cycle,
RiseTime, DescendTime, positive pulse width, negative pulse width, positive duty cycle,
negative duty cycle and delay
Mathematical
operation
+, -,×, ÷
Stored waveform
UTD2000C/3000C: 10 groups of waveform and 10 kinds of setup
UTD2000E/3000E/UTD2000L/2000EX: 20 groups of waveform and 20 kinds of setup
FFT
Lissajous's figure
Window
Sampling point
Phase location
difference
Hanning, Hamming, Blackman, Rectangle
1024 points
?3 degrees
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Operating Manual for UTD2000/3000
Trigger frequency meter*
Reading resolution
6-bit
Trigger sensitivity
30Vrms
(Typical) precistion
?51ppm (+1 word)
General technical dimension
Display
UTD2000C/3000C/UTD2000E/3000E
UTD2000L/2000EX
Diagonal with diagonal of 145mm Diagonal with diagonal of 178mm (7 inches)
Display type
(5.7 inches)
320 (horizontal) RGB×240
UTD2000EX 800(horizontal)×RGB×480(vertical pixels)
Display resolution
UTD2000L 400(horizontal)×RGB×240(vertical pixels)
(vertical pixels)
Display color
Colorful
Waveform brightness* Adjustable (color)
(Typical) backlight
300nit
strength
Category of display
Multilingual selection
language
Note*: UTD2000C/3000C series have no function of trigger frequency meter (except UTD2025C/3025C).
Waveform brightness can not be adjusted.
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Operating Manual for UTD2000/3000
Probe compensator output
(Typical) output voltage
(Typical) frequency
About 3V if peak value is not less than 1M
1kHz
Interface function
Standard configuration
UTD2000C/3000C/UTD2000E/3000E: 1 USB (D); 1 USB (H);
UTD2000L/2000EX: 1 USB OTG
Optional fittings
UTD2000C series, UTD2000E/3000E series: LAN;
UTD3000C series: GPIB and LAN (Only LAN can be selecte dfor UTD3025C)
Power
Power voltage
Environment
100-240VACRMS, 45-440Hz, CAT II
Power
consumption
To be less than 30VA
Fuse
F1.6AL 250V;
Fuses of UTD2000/UTD2000E series are
on power board in the machine;
Fuses of UTD3000/UTD3000E series are
in power socket;
Fuses of UTD2000L/2000EX series are on
power board in the machine.
Temperature
scope
Cooling method
Humidity scope
Altitude
Operation: 0
~+40
Non-operation: -20 ~+60
Forced cooling by fan
35
90 RH
35
40
60 RH
Operation elevation of less than
3,000m
Non-operation elevation of less
than 15,000m
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Operating Manual for UTD2000/3000
Machine dimension
UTD 3000 C
UTD 3000 E
Width
320mm
UTD 2000 L
UTD 2000 X
306mm
Height
Dimension
UTD 2000 C
UTD 2000 E
320mm
150mm
147mm
122mm
Depth
Not containing package
Weight
130mm
150mm
292mm
2.5kg
4.9kg
2.2kg
Containing package
4.0kg
6.8kg
3.3kg
IP protection
IP2 X
Adjustment interval
Suggested calibration period is 1 year.
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Operating Manual for UTD2000/3000
Appendix B: Fittings of UTD2000/3000 series
digital storage oscillograph Standard fittings:
2 inactive probes of 1.2m and 1:1 (10:1); Please
Please order all fittings (standard pieces and
optional fittings) from local UNI-T dealer.
refer to manual of probe fittings of details to meet
EN61010-031: 2008 standard.
150V CAT II grade if switch is in 1* position;
300V CAT II grade if switch is in 10* position;
1 power wire to meet national standards;
1 "Operation Manual";
1 "Warranty Certificate";
Communication control software of
UTD2000/3000 oscillograph;
USB connecting wires:
UTD2000C/3000C/2000E/3000E: UT-D06
UTD2000L/2000EX: UT-D05
Optional fittings:
UTD2000C/2000E series: LAN module: UT-M01
UTD3000C/3000E series: LAN module: UT-M05
UTD3000C series: GPIB module: UT-M02
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Operating Manual for UTD2000/3000
Appendix C: Maintenance and cleaning
General maintenance
It is not allowed to store or place instruments in
damage to instrument or probe.
Warning: Please confirm that instrument has been
locations with direct sunshine for LCD for a long
electric short-circuit even personal injury due to
time. Note: It is not allowed to touch instrument or
moisture.
probe by pressurized spray, liquid or solvent to
avoid damage.
Cleaning:
Instrument and probe can be inspected constantly
according to operation.
Please clean outer surface of instruments
according to following steps:
1. Please remove floating dust out of instrument
and probe by soft cloth. Please do not scratch
transparent LCD protection screen during cleaning.
2. Please power off when cleaning the instrument
by wet soft cloth without dripping. It can be cleaned
by soft detergent or clean water. It is not allowed to
use any corrosive chemical detergent to avoid
105
dried thoroughly before power re-supply to avoid
Operating Manual for UTD2000/3000
The information is subject to changes without prior notice if manual content varies.
106
107