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UTD2025C
UNI-T UTD2025C User Manual
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Oper
ating
Man
ual
fo
r
UTD
2000/
3000
3
probe
c
ompensa
tio
n
signal
output
vertical
control
horizontal
control
Operati
o
n
controls
multi-pur
pose
knob
c
ontroll
er
commo
n
men
u
trigger
control
EXT
TRIG
I
NPUT
analog
signal
input
interface
7
inch
fron
t
pa
nel
of
UNI-T
14
16
Table of Contents
Default Chapter
3
General Safety Overview
3
Product Symbol
5
Safety Terms and Symbols
5
Terms for Products
5
Terms in the Manual
5
Preface
6
Detailed Models
7
Table of Contents
10
Chapter 1: User Guideline
13
5.7 Inch Front Panel of UNI-T
14
7 Inch Front Panel of UNI-T
15
Interface Display Diagram of Digital Storage Oscillograph
16
Function Inspection
17
General Inspection
17
Setup of Attenuation Ratio Switch on Probe
18
Deflection Coefficient of Probe on Digital Storage Oscillograph
19
Probe Compensation
20
Automatic Setup of Waveform Display
21
Elementary Understanding of Vertical System
21
Vertical Control Area on the Panel
21
Elementary Understanding of Horizontal System
23
Horizontal Control Area on the Panel
23
Elementary Understanding of Trigger System
25
Trigger Menu on the Panel
25
Chapter 2: Instrument Setup
27
Setup of Vertical System
28
Jammed DC Component of Signal
29
Synchronous Display of DC and AC
29
Synchronous Obstruction of DC and AC Components of Signal
30
Waveform Display When Closing Bandwidth Limit
30
Waveform Display When Opening Bandwidth Limit
31
Probe Attenuation Coefficient Shown in Channel Menu
31
Coarse Tuning and Fine Tuning of Vertical Deflection Coefficient
32
Setup of Reverse Phase of Vertical Channel
32
Mathematical Calculation
33
Analysis of FFT Frequency Spectrum
34
Introduction to Mathematical Calculation
34
FFT Menu Description
35
FFT Operation Knack
35
Selection of FFT Window
36
Reference Waveform
37
Term Explanation
37
Nyquist Frequency
37
Setup of Horizontal System
39
Horizontal Control Knob
39
Interface of Horizontal System
40
Mark Description
40
View Window Extension
41
Horizontally Extended Part of the Waveform
41
Waveform Display under X-Y Mode
42
Setup of Trigger System
43
Trigger Control
44
Pulse Width Trigger
46
Video Touch
48
Setup of Video Trigger
48
Video Trigger: Row/Field Synchronization
49
Observation of 2 Signals with Different Frequency
50
Trigger Alternation Menu
50
Setup of Trigger Coupling Mode
50
Adjustment of Hold off Time
52
Operation Description
53
Term Explanations
53
Hold off Used for Synchronization of Complex Waveform
53
Setup of Sampling System
56
Sampling Menu
57
Waveform Without Adopting
58
Waveform by Adopting 32 Times of Average Mode
58
Setup of Display System
60
Function Key of Sampling System
60
Display Menu
61
Storage and Callout
62
Operation Steps
62
Function Key for Sampling System
62
Waveform Storages
63
Storage Setup
65
Setup of Storage Menu
65
Bitmap Storage Menu
66
Bitmap Storage
66
Setup of Auxiliary Functions
67
Function Key of Sampling
67
Waveform Recording Menu
69
By Detection
70
Template Setup
71
Automatic Measurement
72
Application Example
72
Cursor Measurement
80
Usage of Operation Key
82
Operation/Stop Key
82
Chapter 3: Application Examples
84
Example 1: Measurement of Simple Signals
84
Example 2: Delay Observation of Sine Signals by Circuit
85
Waveform Delay
86
Example 3: Capture of Single Signal
87
Single Signal
88
To Reduce Random Noise of Signals
88
Example 4: Reduction of Random Noise for Signals
88
Inhibited Signal Noise
90
Example 5: Application Cursor Measurement
90
Voltage Difference of Signal by Cursor Measurement
91
Example 6: Application of X-Y Function
91
Example 7: Trigger of Video Signals
93
Trigger of Video Row
94
Trigger of Video Field
94
Pass Failinterface Schematic
95
Examp Example 8: Pass/Fail Detection
95
Examp Example 9 : Usage of Upgrading Procedure of U Disk
96
Saving Setup Interface
97
Example 10: Usage of Storage Function
97
Waveform Storage
98
Vertical Control Panel of 5.7-Inch Screen
99
Introduction to System Prompt
100
Screen Copy
100
Chapter 4: System Prompt and Troubleshooting
100
System Prompt Information
100
Troubleshooting
101
Chapter 5: Technical Indicators
103
Appendix A: Technical Indicators
103
General Technical Dimension
113
Appendix B: Fittings of UTD2000/3000 Series Digital Storage Oscillograph
116
Appendix C: Maintenance and Cleaning Maintenance
117
4
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UNI-T UTD2025C Specifications
General
Brand
UNI-T
Model
UTD2025C
Category
Test Equipment
Language
English
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