Unit UTD2025C User manual

Introductio
n
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
.

General Safety Overview
The instrument is designed and manufactured strictl
y
according to “Safety Requirements of Electronic
Measuring Instruments” (GB4793) and IEC61010-1
Safety Standard . It conforms to “Insulation Overvoltage
Standard” (CAT 600V) and Safety Standard wit
h
Pollution Level You are expected to know the followin
g
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
.
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
.
Ċ
Ċ
Correct plug-in/out: Please do not plug in/out whe
n
connecting probe or testing conduits to voltage
source
.
Operating Manual for UTD2000/3000

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 touc
h
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 clea
n
and dry
.

Terms in the manual: The following terms may be
seen in the manual
:
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
.
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
Protective
ground terminal
Ground terminal
for chassis
Ground terminal
for testin
g
Caution
!
Refer to manual
High voltage
Safety Terms and Symbols Product symbol: Following symbols may be show
n
on the product surface
.
Operating Manual for UTD2000/3000

Operating Manual for UTD2000/3000
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 Troubleshootin
g
Chapter 5: Appendix: Technical Indicators
A
ppendix B: Fittings of OPERATING MANUAL FOR UTD2000/3000 series digital storage oscillograph
A
ppendix C: Maintenance and Cleaning Maintenance
Preface

The manual includes 3 series of digital storage oscillograph as follows. Detailed models are shown in the
following form
:
Operating Manual for UTD2000/3000
UTD2 C/UTD3025
C
02
5
UTD2 C/UTD3042
C
04
2
UTD2 C/UTD3062
C
06
2
UTD2 C/UTD3082
C
08
2
UTD2 C/UTD3102
C
10
2
UTD2 C/UTD3152
C
15
2
UTD2 C/UTD3202
C
20
2
UTD2 CE/UTD3042CE04
2
UTD2 CE/UTD3062CE06
2
UTD2 CE/UTD3082CE08
2
UTD2 CE/UTD3102CE10
2
UTD2 CE/UTD3152CE15
2
UTD2202CE/UTD3202CE
UTD2025C
L
UTD2052C
L
UTD2052CE
X
UTD2102CE
X
25MH
z
40MH
z
60MH
z
80MH
z
100MH
z
150MH
z
200MH
z
40MH
z
60MH
z
80MH
z
100MH
z
150MH
z
200MH
z
25MH
z
50MH
z
50MH
z
100MH
z
250MS/s
500MS/s
500MS/s
500MS/s
500MS/s
500MS/s
500MS/s
1GS/s
1GS/s
1GS/s
1GS/s
1GS/s
1GS/s
1GS/s
1GS/s
250MS/s
500MS/s
UTD2000C/3000
C
UTD2000E/3000E
UTD2000
L
UTD2000E
X
UTD2000/300
0
Series Model Band width Real-time

Operating Manual for UTD2000/3000
UTD2000/3000 series digital storage oscillograp
h
provides simple front panel with clear functions to
users for all basic operations. Scale and position of
various channels can provide intuitional operatio
n
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
.
A
ppropriate waveform and gear setup can be
shown on the instrument panel
.
UTD2000/3000 series digital storage oscillograp
h
also has high-performance indicators and powerful
functions to fulfill measurement tasks quickl
y
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 displa
y
and mathematical calculation function. We can see
that such series of digital storage oscillograph ca
n
meet your measurement requirements by following
performance characteristics
:
Double analog channels
High-resolution colorful LCD display system wit
h
resolution of 320 240 or 800 480
To support plug and play USB storage instrument
to communicate with computer
A
utomatic waveform and status setup
Waveform, setup, bitmap storage, waveform and
setup reoccurrence
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Elaborate view window extension function for
delicate analysis of waveform details and profile
A
utomatic measurement of 28 kinds of
waveform parameters
A
utomatic cursor tracing and measurement
functio
n
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 displa
y
Fittings of UTD2000/3000 series digital storage
oscillograp
h
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 standar
d
1 power wire to meet national standards
1 Operating Manual
1 Product Warrant
y
USB connecting wire: UT-D06 or UT-D0
5
Communication control software for
UTD2000/3000 series oscillograp
h
㧦
Operating Manual for UTD2000/3000

Item
Elementary understanding of Trigger System..........................................
.
Page
..........................................................................................
.
.........................................................................................
.
......................................................................................
.
............................................................
.
Elementary understanding of Vertical System...............................................
.
Elementary understanding of Horizontal System..........................................
.
General Safety Overview
Preface
Setup of Vertical System........................................................................
.
Setup of Horizontal System.....................................................................
.
Setup of Trigger System..........................................................................
.
General Inspectio
n
Function Inspectio
n
Probe Compensatio
n
A
utomaticSetup of Waveform Displa
y
Chapter 1: User Guideline ..................................................................................
.
5
5
8
9
9
11
1
4
1
5
1
6
2
7
31
Operating Manual for UTD2000/3000
Content
s
Chapter 2: Instrument Setup.......................................................................
1

Page
...................................................................................
.
..........................................................................................
.
Setup of Auxiliary Functions .........................................................................
.
...
.
A
utomatic Measurement..............................................................................
.
....
.
Cursor Measurement .................................................................................
.
......
.
..................................................................................................
.
.
....................................................
.
.............
.
..................................................................
.
Setup of Display System
Storage and Callout
Operation Ke
y
Chapter 3: Application Examples
Example 1: Measurement of Simple Signals
Example 2: Delay Observation of Sine Signals by Circuit.............................
.
Example 3: Capture of Single Signal............................................................
.
Example 4: Reduction of Random Noise for Signals.....................................
.
Example 5: Application Cursor Measurement...............................................
.
Example 6: Application of X-Y Functio
n
Example 7: Trigger of Video Signals
........................................................
.
...............................................
.
4
8
5
0
5
5
6
0
6
8
7
0
7
2
7
2
7
3
7
5
7
6
7
8
7
9
81
4
4
Operating Manual for UTD2000/3000
Item
Setup of Sampling System................................................................
.

Item Page
.......................................................
.
............................................................................
.
....................
.
.....................................................
.
...............................................................................................
.
.........................................
Examp
Examp : Usage of Upgrading Procedure of U disk
System Prompt Informatio
n
Troubleshootin
g
A
ppendix A: Technical Indicators......................................................
.
A
ppendix B: Fittings of UTD2000/3000 Series Digital Storage Oscillograph..
.
A
ppendix C: Maintenance and Cleaning Maintenance...............................
.
Example 10: Usage of Storage Functio
n
Chapter 4: System Prompt and Troubleshooting
Chapter 5: Technical Indicators............................................................
Example 8: Pass/Fail Detectio
n
Example
9
8
8
8
9
91
91
10
4
10
5
8
3
8
4
8
5
8
8
Operating Manual for UTD2000/3000

Operating Manual for UTD2000/3000
Chapter 1: User Guideline
Ƹ
Ƹ
Ƹ
Function inspectio
n
Elementary understanding of vertical system
Elementary understanding of horizontal system
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 inspectio
n
5 keys in a row in the right side of display panel are
menu operation keys. (They are defined as F1 to F
5
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 functio
n
menus or gain specific function application directly
by them
.
㧦
Elementary understanding of trigger system
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 wit
h
usage within the shortest period
.
General inspectio
n
Ƹ
Ƹ
Ƹ
A
utomatic setup of waveform displa
y
Probe compensatio
n
Ƹ
1

Operating Manual for UTD2000/3000
2
5.7 inch front panel of UNI-T
probe compensatio
n
signal output
vertical control
horizontal control
Operatio
n
controls
multi-purpose
knob controller
commo
n
men
u
trigger control
EXT TRIG INPUT
analog signal input
interface

Operating Manual for UTD2000/3000
3
probe compensatio
n
signal output
vertical control
horizontal control
Operatio
n
controls
multi-purpose
knob controller commo
n
men
u
trigger control
EXT TRIG INPUT
analog signal input
interface
7inch front panel of UNI-T

Operating Manual for UTD2000/3000
4
display of horizontal trigger positio
n
time display of central scale line
vertical scale
coefficient of
display channel
display setup of
main time base
waveform
display window
Menu varies wit
h
different functio
n
keys
.
mark of
channel
2
display of trigger status
mark of
channel 1
Interface display diagram of digital storage oscillograph (i.e. UTD2000L series
)

Operating Manual for UTD2000/3000
5
General inspectio
n
Function inspectio
n
It is suggested to inspect the instrument b
y
following steps when getting a new UTD2000/3000
series digital storage oscillograph
.
1. To check if there is damage due to transportatio
n
or not
.
Please replace carton or foaming plastic protectio
n
cushion with severe damage instantly
.
2. Please inspect fitting details and shown it i
n
“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
transportation department and UNI-T distributor if
machine damage is caused by transportation
.
1. Connect the power suppl
y
You can supply power to the machine and voltage is A
C
100V to AC 240V. Frequency is 45Hz to 440Hz. It has
to press [UTILITY] menu and [F1] for self-correctio
n
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-factor
y
setup
.
㧙
UNI-T will arrange maintenance or replacement
.
Please carry out once fast function inspection to
check if the machine operates normally or not
.
Please operate according to following steps
:

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
digital storage oscillograph to CH1 input terminal
and set attenuation ratio switch on probe to 10×
Á
Figure 1 5 Setup of attenuation ratio switch o
n
probe
㧙
ķ
ˊ
Operating Manual for UTD2000/3000
6
Figure 1-
4
power switc
h
function butto
n
F
1
MEASURE
CURS O
R
DISPLAY
A
CQUIRE STORAGE
UTIL ITY
MULTIPURPOSE
SELECT
A
UT
O
CH
1
CH
2
F
2
F
3
F
4
F
5
POSITION
SCALE SCALE
VOLTS D I
V

VVm
POSITION
SEC DIV
SS
LEVEL
MATH
FORCE
HEL P
MENU
TRI
G
MENU
HORI
VERTICA
L
CH
1
TRIGGE
R
HORI ZONTA
L
CH2
SET
Operating Manual for UTD2000/3000

Operating Manual for UTD2000/3000
7
ĸIn digital storage oscilloscope to set the probe
attenuation factor. The attenuation coefficient of
vertical gear ratio change instruments, whic
h
makes measurement resultsSetup method of
attenuation coefficient of probe is as follows to
show amplitude of measured signals correctly
.
Please press
Figure 1-6 Setup of deflection coefficient of probe
on digital storage oscillograp
h
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 withi
n
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 butto
n
to power on CH2 and repeat the second and third
steps.
Ĺ
Probe ratio
n
Figure 1
7
㧙

Operating Manual for UTD2000/3000
Probe compensatio
n
It needs to adjust it when connecting probe to an
y
input channel for the first time so that probe can be
appropriate to input channel. Probe without
compensation correction can also bring i
n
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
2
of
probe compensator then connect grounding clip to
earth wire connector of probe compensator. It also
has to power on CH1 and press [AUTO]
.
3. Adjust variable capacitance on the probe b
y
screwdriver of non-metallic handle for waveform
display of “insufficient compensation” or
“excessive compensation” shown in above figure
until “correct compensation” for waveform displa
y
on the screen as above
.
Warning: Please guarantee perfect insulatio
n
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
.
Observation of displayed waveform
8
Exceedin
g
compensatio
n
Correct
compensation
Insufficient
compensation Figure 1
8
㧙
Compensation correction of probe