Unit UPO3000E Series User manual

UPO3000E Series
Ultra Phosphor Oscilloscope
User Manual
UPO3254E

Introduction
Dear Users:
Hello! Thank you for choosing this brand new UNI-T device. In order to safely
and correctly use this instrument, please read this manual thoroughly before
use, especially the Safety Notes part.
After reading this manual, it is recommended to keep the manual at an easily
accessible place, preferably close to the device, for future reference.
Copyright Information
UNI-TREND TECHNOLOGY (CHINA) CO., LTD. All rights reserved.
Trademark Information
UNI-T is the registered trademark of UNI-TREND TECHNOLOGY (CHINA)
CO., LTD.
Document Version
UPO3000E-20180328-V1.00
Statement
UNI-T products are protected by patent rights in China and other countries,
including issued and pending patents.
UNI-T reserves the rights to any product specification and pricing changes.
UNI-T reserves all rights. Licensed software products are properties of
UNI-T and its subsidiaries or suppliers, which are protected by national
copyright laws and international treaty provisions. Information is this manual
supersedes all previously published versions.
If the original purchaser sells or transfers the product to a third party within
three years from the date of purchase of the product, the warranty period of
three years shall be from the date of the original purchase from UNI-T or an
authorized UNI-T distributor. Probes, other accessories, and fuses are not
included in this warranty.
If the product is proved to be defective within the warranty period, UNI-T
reserves the rights to either repair the defective product without charging of
parts and labor, or exchange the defected product to a working equivalent
product (determined by UNI-T). Replacement parts, modules and products
may be brand new, or perform at the same specifications as brand new
products. All original parts, modules, or products which were defective become
the property of UNI-T.
The “customer” refers to the individual or entity that is declared in the guarantee.
In order to obtain the warranty service, "customer" must inform the defects
within the applicable warranty period to UNI-T, and to perform appropriate
arrangements for the warranty service. The customer shall be responsible
for packing and shipping the defective products to the designated maintenance
center of UNI-T, pay the shipping cost, and provide a copy of the purchase
receipt of the original purchaser. If the product is shipped domestically to the
location of the UNI-T service center, UNI-T shall pay the return shipping fee.
If the product is sent to any other location, the customer shall be responsible
for all shipping, duties, taxes, and any other expenses.
This warranty shall not apply to any defects, malfunction or damages caused
by accidental, machine parts’ wear and tear, using outside the product’s
specifications, improper use, and improper or lack of maintenance. UNI-T
under the provisions of this warranty has no obligation to provide the following
services:
a) Any repair damage caused by the installation, repair, or maintenance of
the product by non UNI-T service representatives.
b) Any repair damage caused by improper use or connection to an incompatible
device.
c) Any damage or malfunction caused by the use of a power source which
does not conform to the requirements of this manual.
d) Any maintenance on altered or integrated products (if such alteration or
integration leads to an increase in time or difficulty of product maintenance).
This warranty is written by UNI-T for this product, and it is used to substitute
any other express or implied warranties. UNI-T and its distributors do not
offer any implied warranties for merchantability or applicability purposes.
For violation of this guarantee, UNI-T is responsible for the repair or replacement
of defective products as the only and complete remedy available to customers.
Regardless of whether UNI-T and its distributors are informed that any indirect,
special, incidental, or consequential damage may occur , the UNI-T and its
distributors shall not be responsible for any of the damages.

1
General Safety Overview
This instrument strictly complies with the GB4793 electronic measuring
instrument safety requirements and IEC 61010-1 safety standards during
design and manufacturing. Please understand the following safety preventative
measures, to avoid personal injury, and to prevent damage to the product or
any connected products. To avoid possible dangers, be sure to use this
product in accordance with the regulations.
Only trained personnel can perform the maintenance program.
Avoid fire and personal injury.
Use the correct power line: Only use the dedicated UNI-T power supply
appointed to the local region or country for this product.
Correct plug: Don't plug when the probe or test wire is connected to the
voltage source.
Ground the product: This product is grounded through the power supply
ground wire. To avoid electric shock, grounding conductors must be connected
to the ground. Please be sure that the product is properly grounded before
connecting to the input or output of the product.
Correct connection of oscilloscope probe: Ensure that the probe ground and
ground potential are correctly connected. Do not connect ground wire to high
voltage.
Check all terminal ratings: To avoid fire and the large current charge, please
check all the ratings and the marks on the product. Please also refer to the
product manual for details on the ratings before connecting to the product.
Do not open the case cover or front panel during operation.
Only use fuses with ratings listed in the technical index.
Avoid circuit exposure: Do not touch exposed connectors and components
after power is connected.
Do not operate the product if you suspect it is faulty, and please contact
UNI-T authorized service personnel for inspection. Any maintenance,
adjustment, or replacement of parts must be performed by UNI-T authorized
maintenance personnel.
Maintain proper ventilation.
Please do not operate in humid conditions.
Please do not operate in flammable and explosive environment.
Please keep the product surface clean and dry.
Safety Terms and Symbols
The following terms may appear in this manual:
Warning: Indicate the conditions and behaviors that may endanger life.
Note: Indicate the conditions and behaviors that may cause damage to the
product and other properties.
The following terms may appear on the product:
Danger: Performing this operation may cause immediate damage to the
operator.
Warning: This operation may cause potential damage to the operator.
Note: This operation may cause damage to the product and other devices
connected to the product.
The following symbols may appear on the product:

2
UPO3152E
UPO3252E
UPO3154E
UPO3254E
2
2
4
4
150MHz
250MHz
150MHz
250MHz
UPO3000E Series Ultra Phosphor
Oscilloscope Introduction
UPO3000E Series Ultra Phosphor Oscilloscope includes the following
4 models:
UPO3000E Series Ultra Phosphor Oscilloscope is based on UNI-T’s unique
Ultra Phosphor technology. A multifunctional, high-performance oscilloscope
that is easy to use, with excellent technical specifications, a perfect
combination of many functionalities that help users to quickly complete testing.
UPO3000E series is aimed at satisfying the most extensive oscilloscope
markets, including communications, semiconductors, computers, aerospace
defense, instrumentation, industrial electronics, consumer electronics,
automotive electronics, field maintenance, R&D, education, etc.
Main features:
250MHz/150MHz bandwidth, providing 2-channel and 4-channel models.
Real-time sampling rate up to 2.5GS/s, allowing you to observe faster signals.
Standard memory depth of 70Mpts per channel, which allows the oscilloscope
to maintain a high sampling rate in a wider time base, and takes into
account the waveform integrity and details.
Waveform capture rate up to 200,000wfms/s.
Hardware real-time waveform continuous recording and waveform analysis
supports recordings up to 100,000 waveforms.
256-level grayscale display
8-inch WVGA (800×480) TFT LCD, ultra widescreen, vivid colors, clear
display.
Abundant trigger features, including a variety of advanced trigger options.
Standard configuration interface: USB-Host, USB-Device, LAN, VGA and
Pass/Fail.
Automatic measurement of 34 waveform parameters.
Supports USB storage and firmware upgrades, one click screen copy
function.
Simple and convenient numeric keypad.
Supports plug and play USB device, which can communicate with the
computer.
Model Analog channels Analog bandwidth

3
General Safety Overview
Safety Terms and Symbols
UPO3000E Series Ultra Phosphor Oscilloscope Introduction
Chapter 1 Getting Started Guide
1.1 General Inspection
1.2 Before Use
1.3 Front Panel
1.4 Rear Panel
1.5 Operation Panel 7
1.6 User Interface
1.7 Special Symbols Introduction
Chapter 2 Vertical Channel Settings
2.1 Open/ Active/ Cloase Analog Channel
2.2 Channel Coupling
2.3 Bandwidth limitation
2.4 VOLTS/DIV
2.5 Probe
2.6 Invert
2.7 Bias
2.8 Unit
Chapter 3 Horizontal System Settings
3.1 Horizontal Scale
3.2 ROLL Mode
3.3 Extended Window
3.4 Independent Time Base
3.5 Trigger Hold-off
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Chapter 4 Sampling System Settings -------------------------------------------- 16
4.1 Sampling Rate --------------------------------------------------------------- 16
4.2 Acquisition Mode ------------------------------------------------------------ 17
4.3 Memory Depth --------------------------------------------------------------- 18
Chapter 5 Trigger System Settings ----------------------------------------------- 18
5.1 Trigger System Interpretation -------------------------------------------- 18
5.2 Edge Trigger ----------------------------------------------------------------- 19
5.3 Pulse Width Trigger -------------------------------------------------------- 20
5.4 Video Trigger ----------------------------------------------------------------- 20
5.5 Slope Trigger ----------------------------------------------------------------- 21
5.6 Runt Trigger ------------------------------------------------------------------ 22
5.7 Window Trigger -------------------------------------------------------------- 23
5.8 Delay Trigger ----------------------------------------------------------------- 24
5.9 Timeout Trigger ------------------------------------------------------------- 25
5.10 Duration Trigger ----------------------------------------------------------- 26
5.11 Setup/Hold Trigger -------------------------------------------------------- 27
5.12 Nth Edge Trigger ---------------------------------------------------------- 28
5.13 Code Pattern Trigger ----------------------------------------------------- 29
Chapter 6 Protocol Decoding ------------------------------------------------------- 30
6.1 RS232 Decode (Optional) ------------------------------------------------ 30
6.2 I2C Decode (Optional) ---------------------------------------------------- 32
6.3 USB Decode (Optional) --------------------------------------------------- 33
6.4 CAN Decode (Optional) --------------------------------------------------- 34
6.5 SPI Decode (Optional) ---------------------------------------------------- 36
Chapter 7 Mathematical Operation ----------------------------------------------- 38
7.1 Mathematical Function ---------------------------------------------------- 38
7.2 FFT ----------------------------------------------------------------------------- 38
7.3 Logic Operation ------------------------------------------------------------- 39
7.4 Digital Filter ------------------------------------------------------------------ 40
7.5 Advanced Operation ------------------------------------------------------- 41
Table of Content

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Chapter 8 Display System Settings ----------------------------------------------- 42
8.1 Waveform Display Setting ------------------------------------------------ 42
8.2 XY Mode ---------------------------------------------------------------------- 42
8.3 Application of XY Mode --------------------------------------------------- 43
Chapter 9 Automatic Measurement ----------------------------------------------- 44
9.1 Parameter Measurement ------------------------------------------------- 44
9.2 Automatic Measurement Menu ------------------------------------------ 45
9.3 All Parameters Measurement -------------------------------------------- 46
9.4 User Defined Parameters ------------------------------------------------- 46
Chapter 10 Cursor Measurement -------------------------------------------------- 47
10.1 Time Measurement ------------------------------------------------------- 47
10.2 Voltage Measurement ---------------------------------------------------- 47
Chapter 11 Storage and Load ------------------------------------------------------ 48
11.1 Setting Storage and Load ----------------------------------------------- 48
11.2 Waveform Storage and Load ------------------------------------------- 48
11.3 Print Screen ---------------------------------------------------------------- 49
Chapter 12 Auxiliary Function Settings ------------------------------------------- 50
12.1 System Function Settings ----------------------------------------------- 50
12.2 Waveform Recording------------------------------------------------------ 51
12.3 Pass/Fail -------------------------------------------------------------------- 52
12.4 System Upgrade ---------------------------------------------------------- 53
Chapter 13 Additional Function Keys --------------------------------------------- 54
13.1 Auto Setting ----------------------------------------------------------------- 54
13.2 Run / Stop ------------------------------------------------------------------- 54
13.3 Clear -------------------------------------------------------------------------- 54
13.4 Factory Setting ------------------------------------------------------------- 54
Chapter 14 System Prompts and Troubleshooting ---------------------------- 56
14.1 System Prompt Information Description ----------------------------- 56
14.2 Trouble Shooting ---------------------------------------------------------- 56
Chapter 15Technical Index ---------------------------------------------------------- 58
Chapter 16Accessories --------------------------------------------------------------- 66
Appendix A Accessories and Options -------------------------------------------- 66
Appendix B Maintenance and Cleaning ----------------------------------------- 66
Appendix C Warranty Overview --------------------------------------------------- 66
Appendix D Contact Us -------------------------------------------------------------- 66
Table of Content

5
Chapter 1 Getting Started Guide
This chapter introduces the precautions for using the oscilloscope for the
first time, the front and rear panels, the user interface, as well as the built-in
help system.
1.1 General Inspection
It is recommended to follow the steps below before using the UPO3000E
series for the first time.
(1) Check for Damages Caused By Transport
If the packaging carton or the foam plastic cushions are severely damaged,
please contact the UNI-T distributor of this product immediately.
(2) Check Attachment
Please check Appendix A for the list of accessories. If any of the accessories
are missing or damaged, please contact UNI-T distributor or local office
of this product.
(3) Machine Inspection
If the instrument appears to be damaged, not working properly , or has
failed the functionality test, please contact UNI-T distributor or local office
of this product.
If the equipment is damaged due to shipping, please keep the packaging
and notify both the transportation department and the UNI-T distributor,
UNI-T will arrange maintenance or replacement.
1.2 Before Use
To perform a quick verification of the instrument’s normal operations, please
follow the steps below:
(1) Connect to the Power Supply
The power supply voltage range is from 100 VAC to 240 VAC, the frequency
range is 45Hz to 440Hz. Connect the oscilloscope to the power supply
cord that came with the oscilloscope or any power supply cord that meets
the host country standards. Turn the power button on the back of the
oscilloscope to ON. Now the soft power button in the front of the
oscilloscope should be lit green.
(2) Boot Check
Press the soft power button and the light should change to red. The
oscilloscope then will show a boot animation, and it will enter the normal
interface afterwards.
(3) Connect Probe
Take the probe found in the attachment and connect its BNC terminal to
the BNC of channel 1 of the oscilloscope. Connect the probe to the
"probe compensation signal connector" and connect the probe’s ground
alligator clip to the “ground terminal” shown below. The output of the
probe compensation signal connector should be a 3Vp-p square wave,
with a 1 kHz frequency.
Probe compensation
signal connector
Ground terminal
Picture 1-1 Probe compensation signal connector and ground terminal
(4) Function Check
Press the AUTO key, a 3Vp-p 1 kHz square wave should appear. Repeat
step 3 for all channels. If the output is not a square wave with the above
descriptions, please perform the probe compensation step in the next section.
(5) Probe Compensation
When the probe is connected to any input channel for the first time, this step
might be required in order to match the probe and the input channel. An
uncompensated probe may cause a measurement error. To adjust the probe
compensation, please follow the following steps:
1.Set the probe menu attenuation coef ficient to 10×, and set the switch on
the probe to 10x then connect the probe to CH1. Make sure the probe’s
hooks is properly connected with the oscilloscope. Connect the probe to
the "probe compensation signal connector" and connect the probe’s ground
alligator clip to the “ground terminal”. Turn on CH1 and press the AUTO button.

6
2.Observe the waveform displayed.
Excessive compensation Correct compensation Insufficient compensation
Picture 1-2 Probe compensation calibration
3.If the displayed waveform does not look like the above “correct compensation”
waveform, use a non-metallic screwdriver to adjust the probe’ s variable
capacitance until the display matches the "correct compensation" waveform.
Warning: To avoid electric shock when measuring high voltage using
the probe, please ensure that the probe insulation is in good condition
and avoid physical contact with any metallic part of the probe.
1.3 Front Panel
1 2 3 456
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8
9
10
1112 13141516171819
Picture 1-3Oscilloscope Front Panel
Screen display area
Multipurpose knob
Waveform recording setting
Shuttle knob
Function menu
Numeric keypad
Automatic setting
Run/stop
Single trigger
Clear all
Probe compensation signal connector and ground terminal
Factory setting, AWG (arbitrary waveform generator),
protocol decoding, print screen
Trigger control area
Horizontal control area
Analog channel input
Vertical control area
Menu control
USB HOST interface
Power on/off
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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1.4 Rear Panel
1 2 3 4567 8
①. EXT Trig: External trigger or external trigger/ 5 input
②. Pass/Fail: Pass/Fail detection function output, support Trig_out output
at the same time, AWG1 and AWG2 are arbitrary waveform generator
output.
③. VIDEO Out: VGA video signal output
④. USB device: USB device interface, the oscilloscope can communicate
with the PC through this interface.
⑤. LAN: The oscilloscope can be connected to the local area network for
remote control.
⑥. AC power input socket: AC power input. Use the power cord provided
in the accessories to connect the oscilloscope to the AC power supply
(100 ~ 240V, 45 ~ 440Hz).
⑦. Power switch: When the AC socket is properly connect to the power
supply, turn on this power switch, then press the power on/off on the
front panel to turn on the oscilloscope.
⑧. Safety lock: You can use the safety lock (sold separately) to lock the
oscilloscope in a fixed position.
Picture 1-4Oscilloscope Rear Panel
1.5 Operation Panel
(1) Vertical Control
① 1 , 2 , 3 , 4 : Analog channel setting keys indicate CH1, CH2, CH3, and
CH4. The four channel labels are identified by different colors also
corresponding to the colors of the waveforms on the screen and the
channel input connectors. Press any key to open the related channel
menu (or activate and close the channel).
② MATH : Press this key to open the mathematical operation menu for add,
subtract, multiply, divide, FFT, logic, and advanced operations.
③ REF : Loads the previously stored reference waveform in the oscilloscope
or the USB disk, you can compare the currently measured waveform with
the reference waveform.
④ Vertical POSITION: Adjust the vertical position of the current channel
waveform, and display the vertical offset value at the baseline
cursor. Press this knob to return the channel display position back to the
vertical midpoint.
⑤ Vertical SCALE: Adjust the vertical scale of the current channel. Turn
clockwise to reduce in scale and turn counterclockwise to increase in
scale. The waveform display amplitude will increase or decrease during
the adjustment, and the scale information at the bottom of the
screen will change in real time. The vertical scale has 1, 2, and 5 steps.
Press the knob allows the vertical scale adjustment to switch between
coarse and fine tuning.

8
2. Horizontal control
a. HORI MENU : Displays extended window,
independent time base and trigger hold-off.
b. Horizontal POSITION : When adjusting the knob,
the trigger point moves left and right relative to
the center of the screen, and the waveforms of
all channels also move left and right. The horizontal
displacement value at the top of the screen
will change in real time. Press this knob to return
the channel display position back to the horizontal
midpoint.。
c. Horizontal SCALE : Adjust the time scale of all
channels. You can see the waveform is compressed
or xpanded in the horizontal direction on the
screen during the process, and the time base scale
in the lower part of the screen changes
in real time. The time base step is 1-2-4. Press the
knob to quickly switch between the main window
and the extended window.
3.Trigger Control
a. MODE : Press this key to switch the trigger mode
to Auto, Normal or Single, and the corresponding
backlight of the current trigger mode will turn on.
b. LEVEL : Turn clockwise to increase the level, turn
counterclockwise to decrease the level. During the
adjustment process, the trigger level value
at the top right of screen will change
Press the knob to quickly return the in real time.
50% of the trigger signal. trigger level to
c. TRIG MENU : Displays the contents of the trigger
menu. For details, see "Trigger setting system".
d. FORCE : Force trigger button, press this button to
force a trigger.
e. HELP : Displays the built-in help system contents.
4.Auto Setting
When this key is pressed, the oscilloscope will automatically adjust
the vertical scale factor, sweep time base, and trigger mode according
to the input signals.
Note: When using the auto setting function, if the measured signal is a sine
wave, the frequency is required to be not less than 20Hz and the amplitude
should be in the range of 20mVpp ~ 120Vpp. If this parameter condition is
not met, the auto setting function may not be valid.
5.Run/Stop
Press this key to set the oscilloscope's operating state to "run" or
"stop". RUN state is indicated by green light.
STOP state is indicated by red light.
6. Single Trigger
Press this key to set the trigger mode to "Single" and the orange
backlight will be on.
7.Clear All
Clears all waveforms on the screen. If the oscilloscope is in the
"RUN" state, it will continue to display new waveforms.
8. Print Screen
Press this key to quickly copy the screen waveforms to a USB storage
device in BMP bitmap format.
9. Multipurpose Knob
Intensity: In non-menu operation, turn this knob to adjust the
brightness of the waveform display. The brightness adjusting range
is 0% ~ 100%. You can also press the DISPLAY →waveform
brightness to adjust it. Multipurpose: Turn the knob to select the
sub-menu, then press the knob to confirm selection.

9
10. Shuttle Knob
For certain numeric parameters that can be set in a large range,
this knob provides a quick-adjust function. Rotate clockwise
(counterclockwise) to increase (decrease) the value. The inner
knob can be fine-tuned, and the outer knob can be coarse tuned.
For example: When playing back the waveform, use the knob to quickly
locate the waveform frames that need to be replayed. Similar parameters
also include: Trigger hold-off time, pulse width setting, slope time, and so on.
MEASURE: Measure setting menu: you can set the measure source, all
parameters, user-defined, perform measurement statistics, select measurement
indicators, etc. The user-defined includes a total of 34 kinds of parameter
measurements, which can be quickly selected through the Multipurpose knob,
and the measurement result will appear at the bottom of the screen.
ACQUIRE: Sampling setting menu for setting the acquisition mode and
deep storage.
CURSOR: Cursor measurement menu, you can measure the time or voltage
of the waveform manually with cursor.
DISPLAY: Select display settings, such as display type, format, grid brightness,
waveform brightness, duration, color temperature, inverse color temperature.
11. Function Keys
STORAGE: Press this key to enter the storage interface. The types that can
be stored include: settings, waveforms. You can store either in the oscilloscope
internal or the external USB storage device.
UTILITY: The utility menu can perform the settings such as auto-calibration,
system information, language, menu display, waveform recording, pass/fail,
square wave output, frequency meter, output selection, backlight brightness,
clear data, IP, RTC, etc.
12. Numeric Keypad
For some numerical parameters that can be set to a large
range, you can directly enter the number plus the time unit,
then press the Enter key to confirm if it is without a unit.
13. Waveform Recording
Stop Pause/Play Record
REC SET : Waveform recording setup menu for setting and operation. The
setting items can set or display the recording interval, end frame, play delay,
and maximum frame.
Stop : Press this key to stop the waveform being recorded or replayed.
Play/Pause : In the stop or pause state, press this key to playback the waveform,
press again to pause playback.
Record : Press this key to start the waveform recording.

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1.6 User Interface
1 2 3 45
678
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Picture 1-5Oscilloscope display interface
①.Trigger Status Identification: Includes TRIGED (has been triggered),
AUTO, READY, STOP, and ROLL (rolling).
②.Time Base Scale: Indicates the amount of time represented by one grid
on the horizontal axis, which can be adjusted by the horizontal SCALE
knob.
③.Sampling Rate/ Memory Depth: Indicates the current sampling rate and
storage depth.
④.Horizontal Displacement: Shows the horizontal displacement value of the
waveform, which can be adjusted by turning the horizontal POSITION knob.
Press the knob to return the displacement value back to 0.
⑤.Trigger Status: Displays trigger source, type, slope, coupling, level, etc.
a. Trigger source: There are seven states: CH1~CH4, AC Line, EXT,
and EXT/5. CH1~CH4 will each be of a different trigger color, for
example, is CH1.
b. Trigger type: The types are edge, pulse width, video, slope, and advanced
trigger. For example, is an edge trigger.
c. Trigger edge: The types are rising, falling, and any kinds. For example,
Indicates trigger at the rising edge.
d. Trigger coupling: The types are DC, AC, high frequency suppression, low
frequency suppression, and noise suppression. For example, indicates
DC coupling.
e. Trigger level: Indicates the current trigger level value, corresponding to
the on the right side of the screen. Adjust the LEVEL knob in the
trigger control area to change this parameter.
⑥.CH1 Vertical Status: Displays CH1 activation state, channel coupling,
bandwidth limitation, vertical scale, and probe attenuation coefficient.
Channel activation state: When the background includes
the channel color, the channel is activated. Press the button 1 , 2 , 3 ,
4 to activate or open/close the corresponding channel.
Channel coupling: Includes DC, AC, and grounding. For example, is
DC coupling in CH1.
Bandwidth limitation: Enable and there will be a icon shown on CH1
vertical status bar.
Vertical scale: When CH1 is activated, the vertical scale parameter can be
adjusted by the SCALE knob in the vertical control area.
Probe attenuation coefficient: Displays CH1 probe attenuation coefficient:
0.001X, 0.01X, 0.1X, 1X, 10X, 100X, 1000X.
⑦.USB Device Indicator: Displays the indicator when the USB device interface
is connected to a USB storage device such as a USB flash disk.
⑧.Current date and time.
⑨.Operation Menu: Displays the current operation menu. Press F1 ~ F5
can change the corresponding submenu content.
⑩.Analog Channels and Waveforms: Displays CH1 ~ CH4 channels and
waveforms, the color of the channel indicator is consistent with the
waveform.

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Take the left menu as an example:
: Indicates there is a next level menu.
: Indicates there is a drop-down menu.
: Indicates that the menu has two options.
: Indicates that user can adjust by the Multipurpose knob.
: The number of circles indicates the total pages
of the menu. There is no small circle for one single page.
For two pages or more, small circles will be shown. Press the key to turn the pages.
1.7 Special Symbols Introduction
Take the left menu as an example:

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Chapter 2 Vertical Channel Settings
UPO3000E provides 4 or 2 analog input channels. The 4 analog channels
are CH1~CH4, and the 2 analog channels are CH1 and CH2. The vertical
system setting method for all channels are exactly the same.
This chapter uses 1 (Channel 1) as an example to describe the vertical
channel settings.
2.1 Open/Activate/Close Analog Channel
CH1 ~ CH4 contains 3 states: open, close, and activated.
Open: When the channel is close, press any of 1 , 2 , 3 , 4 to open the
corresponding channel.
Close: No waveform displays on the corresponding channel. For any open
and activated channel, pressing its channel button can close that channel.
Activated: When multiple channels are opened at the same time, only one
channel is activated (Only open state can be activated). Adjusting the
POSITION knob and the SCALE knob in the vertical control area can
change the settings of the activated channel. Any channel that has been
opened but not yet activated could be activated by pressing its corresponding
channel key, and the screen will show its corresponding channel menu.
Activated state Open but not activated
2.2 Channel Coupling
Press 1 coupling to select DC, AC or grounding mode.
DC AC Grounding
2.3 Bandwidth limitation
Press 1 bandwidth limitation to turn on the bandwidth limitation (The B
icon will appear on the vertical status bar). The bandwidth of the oscilloscope
is limited to about 20MHz, and attenuates any signal above 20MHz. It is
commonly used to reduce the high frequency noise within the signal.
B icon appears when the bandwidth limitation is on
2.4 VOLTS/DIV
Press 1 VOLTS/DIV coarse tuning/fine tuning. Or press the SCALE
knob to quickly switch between coarse tuning/fine tuning.
In the coarse tuning, the VOLTS/DIV range is 1mV/div~20V/div by 1-2-5 step.
For example: 10mV 20mV 50mV 100mV
In the fine tuning, it adjusts in 1% of the current vertical scale.
For example: 10.00mV 10.10mV 10.20mV 10.30mV
Note: Div indicates the grids of the display area, /div represents one grid.
2.5 Probe
In order to match the attenuation coefficient setting of the probe, it is necessary
to set the corresponding coefficient in the channel operation menu. If the
probe attenuation coefficient is 10:1, the probe coefficient in the channel
menu should also be set to 10X to ensure correct voltage reading.
Press 1 probe to select 0.001X, 0.01X, 0.1X, 1X, 10X, 100X, 1000X.

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2.6 Invert
Press 1 invert to turn on the reverse phase. The waveform voltage value
will be inverted, and the inverted flag will appear in the vertical status bar.
Picture 2-1 Invert off Picture 2-2 Invert on
2.7 Bias
When the amplitude of the DC component in the signal is relatively large,
waveform observation could be very inconvenient. As shown in picture 2-3,
it is really hard to identify the waveform. Using the bias function and the
superposition of a -10V bias voltage can eliminate the DC component of the
waveform so the AC signal can be clearly observed, and at the same time
user can know the DC component volume. As shown in picture 2-4, press
1 PgDn bias to turn on the bias and rotate the Multipurpose knob
counterclockwise to adjust the value to -10V.
Picture 2-3 Bias off Picture 2-4 -10V Bias on
Note: Press the Multipurpose knob to return the bias to zero.
2.8 Unit
Select the amplitude unit for the current channel. Press 1 PgDn unit
and adjust the Multipurpose knob to select the unit of “V”, “A”, “W” or “U”, the
default unit is V. User can also switch the channel unit by consecutively pressing
the unit key, then press the Multipurpose knob to confirm, the corresponding
unit will appear on the channel status bar.
Chapter 3 Horizontal System Settings
3.1 Horizontal Scale
Horizontal scale, also called the horizontal time base, is the time value
represented by each scale in the horizontal direction, which is usually expressed
as s/div. With the SCALE knob in the horizontal control area, user can adjust
the horizontal scale in 1-2-4 steps, i.e. 2ns/div, 4ns/div, 10ns/div, 20ns/div……
40s/div. Turn clockwise to decrease the scale and turn counterclockwise to
increase the scale, the scale information (as shown below) on the upper left
corner of the screen changes in real time.
When changing the horizontal time base, the waveform will expand or compress
according to the position of the trigger point.
Note: There is no 100ns/div in the horizontal time base, it is changed to 80ns/div.
Trigger point
Horizontal time base

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3.2 ROLL Mode
When the trigger mode is auto, adjust the SCALE knob in the horizontal
control area to change the horizontal scale to be slower than 40ms/div, the
oscilloscope will be in ROLL mode and will continuously plot the voltage-time
trend chart of the waveform on the screen. The earliest waveform first appears
on the right end of the screen, then gradually moves to the left, as shown
below:
Use the slow sweep mode to observe the low frequency signal, it is
recommended to set the “channel coupling” mode to “DC”.
Note: “Horizontal displacement”, “extended window”, “protocol decoding”,
“pass/fail”, “parameter measurement”, “waveform recording’, “waveform
brightness”, and “independent time base” are not available in ROLL mode.
3.3 Extended Window
The extended window can be used to magnify a waveform horizontally to
view the waveform details.
Press the HORI MENU button on the horizontal control area, then press
the type key to turn on the extended window. Or simply press the SCALE
knob on the horizontal control area to directly enter the extended window,
the screen will be divided into two display areas, as shown below:
Waveform before Magnification:
The upper part of the screen displays the original waveform, which can be
moved left and right through rotating the horizontal POSITION knob, or zoom
in and out the selected area by rotating the horizontal SCALE knob.
Waveform after Magnification:
The lower part of the screen displays the horizontally extended waveform,
the extended window enhances the resolution relative to the main time base.
Note: The extended window function is only available when the horizontal
time base is in the range of 20ms/div ~ 4us/div.
Waveform before magnification
Extended time base
Main
time
base
Waveform after magnification
3.4 Independent Time Base
In independent time base, CH1~CH4 can be set to different time base so that
user can observe different frequency signals in multiple channels at the same
time. Press the HORI MENU time base setting to enter the independent
time base.

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As shown below, CH1 is a 10Hz sine wave, CH2 is a 1kH square wave,
CH3 is a 10kHz triangular wave, CH4 is a 100kHz pulse wave. By using the
independent time base, signals with different time base can be observed
clearly at the same time. Press the CH1 button to activate CH1, then by
adjusting the horizontal SCALE knob, user can change the CH1 time base
scale, adjustment method for other channels are similar to this.
3.5 Trigger Hold-off
Trigger hold-off can observe the complex waveforms (such as pulse train).
Hold-off time is the amount of time the oscilloscope waits before re-enabling
the trigger circuit. During the hold-off period, the oscilloscope will not trigger
until the hold-off time is over. For example, a set of pulse train, which is
required to trigger on the first pulse, the hold-off time can be set to the pulse
train width.
Press the HORI MENU on the horizontal control area and then adjust the
Multipurpose knob (shuttle knob or numeric keypad) to set the trigger
hold-off time. Input a combined waveform to CH1, and adjust the trigger
hold-off time until the waveform can be triggered steadily, as shown below:

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Chapter 4 Sampling System Settings
Sampling is taking the analog input signal and converts it into discrete points
by using the
analog to digital converter (ADC).
Press the ACQUIRE key to enter the sample menu.
Sample Menu
Functions Options Descriptions
Sampling in the normal way
Sampling in peak detection mode
Sampling in high-resolution mode
Sampling in envelope mode
Sampling in an average way
In the average acquisition mode, you
can adjust the Multipurpose knob to
set the average number of times. The
average number of times can be set
to 2n, and n is an integer from 1 to 13.
Set the memory depth to automatic,
which is the normal memory depth
Set the memory depth to 7kpts
Set the memory depth to 70kpts
Set the memory depth to 700kpts
Set the memory depth to 7Mpts
Set the memory depth to 70Mpts
Normal sampling
Peak sampling
High resolution
Envelope
Average
2 ~ 8192
Auto
7k
70k
700k
7M
70M
Acquisition
Mode
Average
Memory
Depth
4.1 Sampling Rate
(1) Sampling and Sampling Rate
Sampling means that the oscilloscope samples the input analog signal,
converts the sample to digital data, and then collects the digital data into
waveform records. Finally, the waveform record is stored in the acquisition
memory.
Analog input signal Sampling points
Sampling rate refers to the time interval between two sampling points. The
maximum sampling rate of the UPO3000E series is 2.5 GS/s.
The sampling rate will be affected by the time base scale and the memory
depth. UPO3000E oscilloscope displays the sampling rate in real time at
the top status bar, user can change the horizontal time base by adjusting
the horizontal SCALE knob or change the memory depth to change the
sampling rate.
(2) Low Sampling Rate Effect
1. Waveform distortion: Due to low sampling rate, the details of the waveform
might be missing, the sampling waveform might be much different from the
actual signal.

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2. Waveform aliasing: Since the sampling rate is less than 2 times of the
actual signal frequency (Nyquist Frequency), the frequency of the reconstructed
signal will be less than the actual signal frequency.
3. Waveform leakage: Due to low sampling rate, the reconstructed waveform
might not reflect the entire actual signal.
4.2 Acquisition Mode
To obtain a waveform from sampling points, press ACQUIRE acquisition
mode to
switch between the acquisition methods.
(1) Normal Sampling
In this acquisition mode, the oscilloscope samples the signal at equal intervals
and reconstruct the waveform. For most waveforms, the use of this mode
can produce the best display.
(2) Peak Sampling
In this acquisition mode, the maximum and minimum values of the input
signal are found at each sampling interval, and the waveform is displayed
using these values. This way, the oscilloscope can acquire and display a
narrow pulse, otherwise the narrow pulse might be missed in the normal
sampling mode. Noise might be enlarged in this mode.
(3) High Resolution
In this acquisition mode, the oscilloscope averages the neighboring points
of the sampled waveform, which can reduce the random noise on the input
signal and produce a smoother waveform on the screen.
(4) Envelope
Acquires multiple waveforms, and calculates and displays the maximum
and minimum values for all sampling points that are at the same time relative
to the trigger points. The general envelope mode uses the peak detection
mode for each individual acquisition.
(5) Average
In this acquisition mode, the oscilloscope acquires several waveforms and
finds the average, and displays the final waveform. This method can reduce
the random noise.
Observe the waveform changes by changing the acquisition mode settings.
If the signal contains a large noise, the sample waveforms without average
or with 32 times average are displayed below for comparison.
Pulse disappear
Waveform without average Waveform with 32 times average
Note: Average and high resolution use different average methods. The
former is “multiple sampling average”, the latter is “single sampling average”.

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4.3 Memory Depth
The memory depth refers to the number of waveform points that the
oscilloscope can store in one trigger acquisition. It reflects the storage capacity
of the acquisition.
Memory depth, sampling rate and wavelength should meet the following
formula:
Memory depth = Sampling rate × Horizontal time base × Horizontal grids
UPO3000E comes with 70Mpts memory depth (per channel). Press
ACQUIRE Memory depth to set the memory depth to automatic, 7k, 70k,
700k, 7M or 70M. The default is automatic.
Chapter 5 Trigger System Settings
Trigger determines when the oscilloscope starts to collect data and display
waveform. Once the trigger is correctly set, it can convert unstable signals
into meaningful waveforms. In the beginning of data acquisition, it first
collects enough data to plot a waveform on the left of the trigger point, and
continuously collects data while waiting for the trigger. When a trigger is
detected, the device continuously acquires enough data for plotting a
waveform to the right of the trigger point.
In this chapter, the 4-channel UPO3XX4CS will be used as an example.
5.1 Trigger System Interpretation
(1) Trigger Source
A signal for generating a trigger. Triggers can be obtained from a variety of
sources such as input channels (CH1, CH2, CH3, CH4), external trigger
(EXT, EXT/5), AC Line, etc.
Input Channel: Select any one of the analog signal input terminal
CH1~CH4 on the front panel of the oscilloscope as a trigger signal.
External Trigger: Select the EXT Trig (EXT or EXT /5 input terminal)
input signal from the back of the oscilloscope as a trigger signal.
For example, the external clock input can be used on the EXT Trig
terminal as a trigger source, including EXT and EXT/5. EXT trigger
level ranges from -1.8V ~ +1.8V can be set. EXT/5 trigger level range
is increased to -9V ~ +9V.
AC Line: Power supply. It can be used to observe signals related to mains,
such as relationship between lighting equipment and power supply
equipment, so as to achieve stable synchronization.
(2) Trigger Mode
Trigger mode determines the behavior of the oscilloscope during a trigger
event. This oscilloscope provides three kinds of trigger modes: auto, normal,
and single trigger. Press the MODE on the trigger control area to switch the
trigger modes.
Auto trigger: When there is no trigger signal, the system automatically
runs and displays data. When the trigger signal is generated, it automatically
switches to trigger scanning to synchronize with the signal.
Note: This mode allows 40ms/div or slower time scale without triggering in
ROLL mode.
Normal Trigger: The oscilloscope only collects data when the trigger
condition is satisfied. When it is not triggered, the oscilloscope will stop data
acquisition and wait for the trigger signal.
Single Trigger: Press once the SINGLE key and the oscilloscope will wait
for the trigger. When the instrument detects a trigger, the waveform is sampled
and displayed, and enters the STOP state. Press the SINGLE button on the
front panel of the oscilloscope to quickly enter the single trigger mode.