UCORE ELECTRONICS UCE-DSO4200C User manual

UCE-DSO4200C FAULT LOCATOR
USER MANUAL
UCORE ELECTRONICS
https://ucore-electronics.com
2023

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Contents
1. Introduction..............................................................................................................................................3
2. Device Overview.......................................................................................................................................5
2.1. Rotary encoder functions .........................................................................................................................7
3. Oscilloscope Mode ...................................................................................................................................8
3.1. Adjusting the vertical system ...................................................................................................................9
3.2. Adjusting the horizontal time base.........................................................................................................11
3.3. Trigger mode ..........................................................................................................................................11
3.4. Operations and measurements..............................................................................................................12
3.5. Running mode ........................................................................................................................................14
3.6. Time base mode .....................................................................................................................................15
4. Curve Tracer Mode.................................................................................................................................16
4.1. Before test..............................................................................................................................................17
4.2. Theory ....................................................................................................................................................17
4.3. Setting test parameters..........................................................................................................................18
4.4. Menu usage............................................................................................................................................20
5. Signal Generator.....................................................................................................................................23
5.1. Sine wave ...............................................................................................................................................24
5.2. Square wave...........................................................................................................................................25
5.3. Triangle wave .........................................................................................................................................25
5.4. Sawtooth wave.......................................................................................................................................26
5.5. SinC wave ...............................................................................................................................................26
5.6. Noise signal ............................................................................................................................................26
5.7. Exponential wave ...................................................................................................................................27
5.8. Full wave rectification ............................................................................................................................27
5.9. Half wave rectification............................................................................................................................28
5.10. Gaussian wave................................................................................................................................28
5.11. Direct voltage signal .......................................................................................................................28
5.12. Staircase wave................................................................................................................................29
6. Short Circuit Finder Mode ......................................................................................................................29
7. USB Disk .................................................................................................................................................31
8. File Browser............................................................................................................................................32
9. System Menu..........................................................................................................................................35
9.1. About......................................................................................................................................................35

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9.2. System info.............................................................................................................................................36
9.3. LCD Back Light ........................................................................................................................................36
9.4. Calibration & Settings.............................................................................................................................36
10. PC Program.............................................................................................................................................44
10.1. Oscilloscope menu..........................................................................................................................44
10.2. Signal generator .............................................................................................................................47
10.3. Curve tracer....................................................................................................................................48
10.3.1. Creating a database........................................................................................................................52
10.3.2. Comparison from database ............................................................................................................53
10.4. About tab........................................................................................................................................55

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1. Introduction
With this unique device, you will have the basic devices needed for fault detection of electronic
boards: Oscilloscope, curve tracer, signal generator and short circuit finder.
UCE-DSO4200C can transmit all data to a PC via USB connection. This USB connection provides the
possibility to use the device with PC software.
In addition, this device can mirror the LCD screen image to a monitor via the HDMI output and can
be controlled with a wireless mouse.
In the curve tracer mode, passive elements can be checked without triggering active elements with
a 0.2V test signal. Thus, less component disassembly is ensured in troubleshooting.
In short-circuit finder mode, the short-circuit line on the PCB can be analyzed and its location can
be found.
Specifications:
•Display: 5.0-inch 800× 480 pixel color LCD with Touch screen
•Oscilloscope Channels: 2
•Curve Tracer Channels: 2
•Signal Generator Channel: 1
•PC connection: mini USB connector (USB 2.0 HID protocol).
•Storage: internal 4GB disk (microSD card)
•HDMI out for TV or Monitor (800×480 @60Hz)
•Multi-Device Wireless Mouse for Device and PC
•internal battery: 3.7V 10,000mAh (~4.5 hours)
•Power Consumption: 15W
•Dimensions: 170 x 200 x 140 mm
Features of Oscilloscope:
•Analog Bandwidth: 20MHz
•Maximum sampling rate: 8-bit 250 MS/s Real-Time Sampling, 6 GS/s Equivalent-Time Sampling
(ETS)
•Sampling depth: 8kB
•Input impedance: 1MΩ
•Vertical sensitivity: 5mV/div 10V/div
•Horizontal sensitivity: 10ns/div 500ms/div

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•Max input voltage: ±50V (X1 Probe), ±500V (X10 Probe)
•Coupling: AC/DC
•XY Mode
•Trig modes: Run, single, hold functions
•Trigger functions: rising / falling edge
•Auto Measurement: frequency, peak-to-peak voltage, mean voltage, RMS voltage
•Cursor: differential measurement for time and voltage
•FFT analyze: 1024 points FFT analyze
•Math Functions: CH1+CH2, CH1-CH2, CH1*CH2, CH1/CH2, CH1 FFT, CH2 FFT.
Features of Signal Generator:
•Signals: Sine, square, triangle, sawtooth, sinC, noise, exponential, full wave, half wave, gauss,
direct, staircase.
•Max. Voltage: ±5.0V (10Vpp)
•Frequency: 0.001Hz 20MHz
Features of Curve Tracer:
•Waveform: Sine wave
•Test Frequencies: 20Hz 10kHz (36 steps)
•Open circuit Voltage: ±0.2V ±20V (24 steps)
•Source Resistance: 10Ω, 47Ω, 100Ω, 470Ω, 1kΩ, 4.7kΩ, 10kΩ
•5 programmable user buttons
Package List:
•Carrying Case
•UCE-DSO4200C Device
•Multi-Device Wireless Mouse
•2 sets 4mm banana multimeter probes
•2 pcs X1, X10 Oscilloscope Probe
•1 pc Test Hook Clip Probe for Signal Generator
•12V 2A power supply (EU Type)
•Touch pen
•USB cable
•HDMI cable

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2. Device Overview
There is a 5-inch LCD on the device. LCD has resistive type touch. While general control of the device can be
made on the screen, it is also possible to perform basic controls more quickly with 3 rotary encoders.
Additional features are gained with the buttons on the rotary encoder.
At the bottom of the device, there are curve tracer measurement tips. These are 4mm banana compatible
probe inputs. There is one BNC connector for signal generator output and 2 BNC connectors for
oscilloscope measurement input (Figure 1).
Figure 1. Front view of the device
There is an HDMI output on the right side of the device. It is used to mirror the LCD image to any monitor,
projector or TV. The USB connection is used to communicate with a computer (Figure 2).
There is a power input on the back of the device. The power supply of the device is provided by a 12V - 2A
adapter. The device is turned on and off with the power switch (Figure 2).

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Figure 2. Back and side views of the device
When the device is turned on, the main menu in Figure 3 is displayed. There are 7 icons here. These menus
will be explained in detail in the next sections.
Figure 3. Device main menu

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2.1. Rotary encoder functions
Rotary-1
Function
Menu
Clockwise
counterclockwise
Button
Booting
-
-
When pressed and held, the device
connects as a USB disk. (If connected to
computer with USB cable)
Main menu
-
-
-
Oscilloscope
CH-1 Volt/div value decreases
CH-1 offset value increases
CH-math gain increases
CH-math offset increases
CH-1 Volt/div value increases
CH-1 offset value decreases
CH-math gain decreases
CH-math offset decreases
Pressing the button once will switch
between Volt/div and offset.
If the math function is active;
Volt/div →offset →math gain →math
offset
toggle between them.
Curve Tracer
Test voltage value decreases
Test voltage value increases
Increases the scan period if the scan
mode is active
Signal generator
Increases the digit value of the
selected parameter
Decreases the digit value of the
selected parameter
-
Short circuit
-
-
-
File browser
Scrolls down the page if the number
of files exceeds the page.
Scrolls the page up
-
System
Increases first parameter in DDS
OFFSET and DDS GAIN menu
Decreases first parameter in DDS
OFFSET and DDS GAIN menu
-
Rotary-2
Function
Menu
Clockwise
counterclockwise
Button
Booting
-
-
-
Main menu
-
-
-
Oscilloscope
CH-2 Volt/div value decreases
CH-2 offset value increases
CH-2 Volt/div value increases
CH-2 offset value decreases
Pressing the button once will switch
between Volt/div and offset.
Curve Tracer
Frequency value decreases
Frequency value increases
Decreases scan period if scan mode is
active
Signal generator
Shifts the active digit to the right
Shifts the active digit to the left
-
Short circuit
-
-
-
File browser
Selects the file (or folder) just below
Selects the file (or folder) just
above
Opens the selected file or folder
System
Increases the second parameter in
the DDS OFFSET and DDS GAIN
menu
Decreases second parameter in
DDS OFFSET and DDS GAIN menu
-
Rotary-3
Function
Menu
Clockwise
counterclockwise
Button
Booting
-
-
When pressed and held, the device
connects as a USB disk. (If connected to
computer with USB cable)
Main menu
-
-
-
Oscilloscope
Time/div value decreases
Trigger level value increases
Shifts the buffer forward in STOP
mode
Time /div value increases
Trigger level value decreases
Shifts the buffer back in STOP mode
Pressing the button once toggles
between Time/div and trigger level.
If triggering is stopped, toggle between
Time/div and buffer scrolling
Curve Tracer
Limit resistor value decreases
Limit resistor value increases
-
Signal generator
The above parameter is selected
The below parameter is selected
-
Short circuit
-
-
-
File browser
-
-
-
System
Increases LCD backlight
Decreases LCD backlight
-

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3. Oscilloscope Mode
To enter the oscilloscope mode, the "OSCILLOSCOPE" icon in the "Main Menu" is clicked. The general view
of the scope mode is as in Figure 4.
Oscilloscope icon
At the top of the screen; Status information of measurement channels (Volt/div, coupling), operating
status, time base mode, trigger status information, sampling status information (time/div), frame refresh
rate and battery status information are included. On the right side, there is the menu area where various
settings are made. At the bottom of the screen, there are submenu of these setting menus.
When returning to the main menu with the “EXIT” button in the lower right corner of the screen, the
setting parameters are saved in the memory (dso_settings.cfg).
Figure 4. Oscilloscope menu overview

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3.1. Adjusting the vertical system
The UCE-DSO4200C has two analog input channels and each channel is equipped with an independent
vertical control system. The adjustment methods for the vertical systems of the two channels are the same.
This section takes CH-1 as an example to introduce the vertical system adjustment method.
Enable or disable analog channel:
Click the “CH-1” button in the menu to enable CH-1. While the “CH1-ON”button in the submenu enables
the channel, the “CH1-OFF”button makes the channel disable. In the figure below, CH-1 is disabled and CH-
2 channel is enable. No status information is displayed on the disabled channel.
If CH-1 is enabled but not activated, the channel status label is shown as below. Click the “CH-1”menu in
the menu to activate the channel. Other methods of channel activation are when the vertical scale setting
of the corresponding channel is made or if the rotary encoder button is clicked, the channel is activated.
CH-1 enabled but not active
CH-1 enabled and active
Vertical scale setting:
Vertical scale indicates the voltage value per grid in the vertical axis of the screen. It is often expressed in
V/div. While you adjust the vertical scale, the display amplitude of the waveform would enlarge or reduce.
The scale information of the channel status label (e.g., as shown in the following figure) at the top of the
screen would change accordingly.
The adjustable range of the vertical scale is between 5 mV/div and 10 V/div. Turn the Rotary-1
corresponding to CH-1 to adjust the vertical scale (clockwise to decrease the scale and counterclockwise to
increase). The vertically scaled channel becomes the active channel at the same time.
Vertical offset adjustment:
Vertical offset indicates the offset of the signal ground level position of the waveform from the screen
center in the vertical direction. When adjusting the vertical offset, the waveforms of the corresponding
channel moves up and down. As it moves, the offset level is shown on the screen with a horizontal line, and
the vertical offset information (as shown in the figure below) will change accordingly just above the offset
level line.

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Vertical offset can be adjusted in three ways.
•When the channel is active, the signal is moved up and down the graphics area by holding and
dragging the touchscreen pen (left button if using the Mouse).
•When the Rotary-1 button is pressed once, the offset adjustment mode is entered. After switching
to offset mode, the offset level is changed by rotating Rotary-1.
•It is increased and decreased with the “Inc. Offset” and “Dec. Offset” buttons in the submenu of
the CH-1 menu. In addition, when the “Rst. Offset” button in the submenu is clicked, the offset
value is set to 0V.
Coupling adjustment:
The undesired signals can be filtered out by setting the coupling mode. For example, the signal under test is
a square waveform with DC offset.
•When the coupling mode is “DC”: the DC and AC components of the signal under test can both pass
the channel.
•When the coupling mode is “AC”: the DC components of the signal under test are blocked.
Click the “CH-1”menu button. The desired coupling can be selected with the “DC-Coupl.” and “AC-Coupl.”
buttons in the submenu.
DC coupling
AC coupling

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3.2. Adjusting the horizontal time base
Horizontal time base, also called the horizontal scale, refers to the time of each grid in the horizontal
direction of the screen. It is usually expressed in s/div.
When changing the horizontal time base, the displayed waveforms of all channels are expanded or
compressed horizontally relative to the trigger reference point. The horizontal time base in the upper right
corner of the screen is as shown in the figure below.
Turn the Rotary-3 to set the horizontal time base within the usable range (clockwise to decrease the
horizontal time base and counterclockwise to increase it). It will adjust the horizontal time base of the
waveforms of all channels in 1-2.5-5 steps within the adjustable range.
3.3. Trigger mode
For a digital oscilloscope, it continuously samples the waveform regardless of whether it is triggered stably
or not. Only in stable trigger condition can the signal be displayed stably. In order to keep the observed
signal constant on the screen, the trigger source must be selected for that channel. But only channel setting
is not enough. The trigger level should also be set to a level from the maximum and minimum range of the
signal. Otherwise, it will be difficult to observe because the signal will be very moving on the screen.
Trigger source:
The submenu is opened by clicking the “Trigger” button to select the trigger source. To set the trigger to
the CH-1 channel, the “Trig CH1” button in the submenu is clicked.
Trigger level:
After the trigger source is selected, Rotary-3 button is pressed once and trigger level adjustment mode is
entered. Turn the Rotary-3 to adjust (clockwise to increase level and counterclockwise to decrease). It is
also possible to adjust with the “Increase”and “Decrease”buttons in the “Trigger” submenu.
The trigger level will be displayed on the screen with a horizontal line while moving, and the trigger level
information (as shown in the figure below) will change according to the level just above the trigger level
line.
When you stop changing the trigger level, the level line disappears in about 1 s.

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Trigger edge:
Triggering occurs at the trigger level of the specified edge of the input signal. At this time, the current
trigger setting information (trigger edge and trigger source) is displayed in the upper right corner of the
screen, as shown in the figure below.
When the voltage of the waveform reaches a required level, then a comparator switches and send a start
signal to the time base. This enables the time base to exactly synchronize with the displayed waveform so
that it remains stable on the screen.
3.4. Operations and measurements
The device can perform math operations, automatic measurements, and cursor measurements on sampled
and displayed data.
Mathematical operations:
Click the “Math.”button to open the math operation menu. In the Math submenu, channels can perform
multiple math operations between waveforms:
•Mathematical operations (A+B, A-B, A×B and A/B)
•FFT operation
The mathematical operation and the gain value of the math channel are shown at the top of the screen as
follows.
Mathematical operation: CH1 + CH2, gain ½
By pressing the Rotary-1 button (Volt/div →Ch offset →math gain →math offset) the modes are switched
and the math gain and offset values can be adjusted.

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CH-1 FFT CH-2 FFT
CH-1 + CH-2
Automatic measurement:
Some data of the waveform can be automatically calculated. When the “Measure”button is clicked, there
are 4 different measurements in the submenu.
•Frequency: Frequency (channel triggering needs to be set accordingly to be calculated)
•Vpp: Peak-to-peak voltage value
•Vrms: Effective voltage value
•Vavg: Average voltage value
When the relevant buttons in the submenu are clicked, the selected measurement is added to the bottom
of the graph. Whichever channel is active, measurement is made for that channel. Channel activation is
explained in the section “Enable or disable analog channel”.
A maximum of 4 values are displayed simultaneously. If the measurement area is desired to be deleted, the
“Clear All” button is clicked.

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Cursor measurement:
Cursor measurement can measure X-axis values (time) and Y-axis values (voltage) of the selected
waveform. By clicking the “Cursor”button, the submenu is opened and activated by clicking the “ON”
button in the submenu. A total of 4 orange colored and dashed cursors appear on the screen, 2 horizontally
and 2 vertically. If you want to measure on the Y axis, the “Amplitude”button is clicked. In this case, the
horizontal cursors will be bright color. Rotary-1 and Rotary-2 encoders are used to move cursors. Moving
the cursors changes the measurement values in the upper right of the screen. Since CH-1 and CH-2 may
have different volt/div values, the button of that channel (CH1 or CH2) is clicked in the submenu for which
channel the measurement is made. If it is desired to measure on the X axis, the “Time” button in the
submenu is clicked for this. In this case, the vertical cursors will be bright color. Rotary-1 and Rotary-2
encoders change the position of cursors. As the cursors are moved, the time values change in the upper
right of the Screen. In order to make the cursors passive, the “OFF”button in the submenu is clicked.
Time measurement cursors active Voltage measurement cursors active
3.5. Running mode
The triggering requirement of the oscilloscope defined in the running mode. There are three different
buttons in the submenu of the “Run. Mode” menu.
•Run: Determines wave form even if it cannot define triggering requirement in this mode. If the
triggering does not occur although the oscilloscope waits for a certain time, triggering is initiated
necessarily. If it forces occurrence of an invalid trigger, the oscilloscope may not synchronize the
wave form and waves are seen as rolling over in the display. In case of a valid triggering, the display
remains constant.
•Single: In this mode, if it could not define triggering requirement, no signal is seen in display and
waits in this way until triggering occurs. After occurrence of the initial triggering saves the signal
and reflects in the display and freezes the display.
•Stop: When this button is clicked in any moment, the last signal in the display is frozen.
The running mode is located at the top of the screen.

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If the Rotary-3 button is pressed in the stop mode, it is possible to view the sampled but not displayed data
by rotating the Rotary-3. At the top of the screen, it is shown which position of the buffer is reflected on
the screen.
3.6. Time base mode
The device supports two available time base modes: YT mode and XY mode. By default, the time-based
mode is YT.
YT mode:
In this mode, the Y-axis represents voltage and the X-axis represents time.
When the horizontal time base is greater than or equal to 25ms/div, the device enters slow scan mode.
XY mode:
In this mode, both the X-axis and Y-axis represent voltage. The mode changes the screen from voltage-time
display mode to voltage-voltage display. You can use the Lissajous method to measure the phase deviation
of two input signals with the same frequency. Below, the same frequency and sinusoidal signals are applied
to both channels. The effect of the phase angle between the two signals on the signal is shown in the
picture below.
Phase angle 90° Phase angle 45°
Note: In XY mode, CH-1 and CH-2 are forced to be enabled.

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4. Curve Tracer Mode
To enter the Tracer mode, click the “CURVE TRACER”icon in the “Main Menu”. The general view of the
Tracer mode is as in Figure 5.
Curve Tracer icon
At the top of the screen; test voltage, test frequency, limit resistance and scanning period (if scanning mode
is active). In addition to these, frame refresh rate and battery status information are also included. On the
left side of the screen is the impedance curve area. On the right side of the screen, there is a menu area
consisting of buttons (Figure 5).
Figure 5. Curve tracer menu overview

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4.1. Before test
Some rules must be followed before fault detection.
•The PCB to be measured must be powered off.
•Make sure that the capacitors on the PCB are discharged. Higher than 24V charged capacitors may
damage the device. Otherwise, the product will be out of warranty.
4.2. Theory
The device works by applying a current-limited AC signal across two points of a component. The current
flow causes a vertical trace deflection, while the applied voltage causes a horizontal deflection. Together
they form a unique V-I signature that represents the overall health of the device under test.
The signature of all analog components is a combination of one or more of the four basic signatures:
resistance, capacitance, inductance, and semiconductor. Each of these components reacts differently to the
applied AC test signal. For this reason, recognizing the four basic signatures on the oscilloscope display is a
key to understanding analog signature analysis.
Figure 6. Component characteristics in XY mode (horizontal trace voltage, vertical trace current)
UCE-DSO4200C is designed to diagnose the failures in all types of electronic circuit boards. The product is
provided with two channels and allows the comparison of the defective boards with the intact boards. All
V-I impedance curves consist of 12-bit 256 different measurements per channel.
The following components can be tested with this device.
Passive components: resistance, capacitor, coil
Diodes: general purpose, zener, varistor
Transistor: NPN, PNP, bipolar, Darlington, JFET, MOSFET, UJT
Triggered components: SCR, TRIAC, relay
Optoelectronics: LED, photo-transistor, optocoupler
Integrated circuits: digital, analog

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4.3. Setting test parameters
The component to be tested may be requested to be tested in different conditions. For this purpose, the
device has Test voltage, Limit resistance and Frequency values in different stages. Although the UCE-
DSO4200C curve tracer mode is dual channel, unlike the oscilloscope, test parameters are common to both
channels.
Test voltage setting:
The test voltage can be adjusted between 0.2V and 20V. It is adjusted at 200mV intervals up to 1V, after 1V
with 1V intervals. It is 24 steps in total. Rotate the Rotary-1 to adjust the voltage (counterclockwise to
increase, clockwise to decrease).
The test voltage and limit resistance also determine the test current. In order to limit the energy flow, the
maximum value of the test voltage is limited depending on the limit resistor.
Voltage limitation due to limit resistor;
•2V (*1V) for 10R range,
•7V (*4V) for 47R range,
•10V (*7V) for 100R range,
•18V (*15V) for 470R range,
•20V for 1K, 4.7K and 10K ranges.
* Voltage limitation in dual mode
One of the biggest features of the device is undoubtedly the 200mV test voltage stage. Since active
components such as diodes and transistors are not triggered in the measurements made at this stage, only
the curve of the passive components is obtained in the measurement.
Figure 7 shows the impedance curves of the parallel connected diode and 47R resistor at 5V and 0.2V
stages. At 5V, a combination of resistor and diode characteristics is seen, while at 0.2V only the resistance
curve is seen.
Figure 7. Impedance curve of parallel connected diode and resistor at different stages

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Figure 8 shows the impedance curves of a parallel connected diode and 10uF capacitor at 5V and 0.2V
stages. While a combination of diode and capacitor characteristics is seen at 5V, only the capacitor curve is
seen at 0.2V.
Figure 8. Impedance curve of parallel connected diode and capacitor at different stages
As seen in the examples above, the diode impedance is eliminated at the 0.2V stage and only the curves of
passive components such as resistors and capacitors are obtained. Thus, in the testing of electronic boards,
passive components can be tested independently of active components. There is a serious decrease in the
amount of components that need to be tested discretely by removing them from the electronic board.
Test frequency setting:
The test frequency can be adjusted between 20Hz and 10kHz. It is adjusted in 10Hz steps between 20Hz
and 200Hz, in 100Hz steps between 200Hz and 1kHz, and in 1kHz steps between 1kHz and 10kHz. It consists
of 36 levels in total. Rotate the Rotary-2 to adjust the frequency (counterclockwise to increase and
clockwise to decrease).
Passive components such as capacitors and coils are frequency sensitive. Frequency ranges are often
important in such component measurements.
•The low frequency - high current (e.g., 20Hz –10R) range is suitable for high capacitance capacitors
(mF).
•High frequency –low current (e.g., 5kHz –1K) stage is suitable for low capacitance capacitors (nF).
•The high frequency –high current (e.g., 10kHz –10R) stage is suitable for coils with low inductance
(uH).
Limit resistance setting:
There are 7 different stages as 10R, 47R, 100R, 470R, 1K, 4.7K and 10K. Rotate the Rotary-3 to adjust the
limit resistor (counterclockwise to increase and clockwise to decrease).
10R is high current mode and 10K is low current mode.