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
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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
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1.4 Rear Panel
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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
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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.
15
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.
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(3) Trigger Coupling
Trigger coupling determines which component of the signal will be transmitted
to the trigger circuit. The coupling type includes DC, AC, low frequency
suppression, high frequency suppression, and noise suppression.
DC: Let all the signal components pass.
AC: Blocks DC components and attenuates signals below 10Hz.
High Frequency Suppression: Attenuates high frequency components
above 80kHz.
Low Frequency Suppression: Blocks DC components and attenuates
low frequency components below 8kHz.
Noise Suppression: Suppresses high frequency noise in the signal and
reduces the probability of the oscilloscope being falsely triggered.
(4) Trigger Sensitivity
The minimum signal required to generate a correct trigger. For example,
normally the
trigger sensitivity of the input channel (CH1~CH4) is 1div, which means the
source signal should be at least 1 div.
(5) Pre-trigger/ Delayed Trigger
Data collected before/after the trigger event.
Trigger position is usually set at the level of the screen, and you can
observe 7 grids of pre-trigger and delayed trigger information. The horizontal
displacement of the wave can be adjusted by the horizontal displacement
POSITION knob in order to observe more pre-trigger information. By observing
the pre-trigger data, you can observe the waveform situation before the trigger.
For example, capturing the burr generated at the start of the circuit, by
observing and analyzing the pre-trigger data, it can help to find out the cause
of the burr.
(6) Forced Trigger
Press the FORCE key to generate a forced trigger signal.
If the waveform is not displayed in normal or single trigger mode, press the
FORCE button to collect the signal baseline to check whether the acquisition
is normal.
5.2 Edge Trigger
Edge trigger uses the rising or falling edge of the trigger signal to generate
a trigger.
Press TRIG MENU type , and select the edge by the Multipurpose knob,
the default trigger type is edge. The trigger type can also be switched by
consecutively pressing the type key, and press the Multipurpose knob to
confirm.
At this time, the trigger setting information is displayed
at the upper right corner of the screen, the trigger type is edge, trigger
source is CH1, and it is the rising edge trigger with trigger level of 0.00V.
Edge Trigger Menu
Source:
Press the source key to select the trigger source of CH1, CH2, CH3, CH4,
AC Line, EXT, and EXT/5. The selected source will be displayed on the
upper right corner of the screen.
Note: Only selecting the channel with connected signals as the trigger source
can obtain a stable trigger.
Edge Type:
Press the edge type key to select which edge the input signal will trigger on,
user can select the rising edge, falling edge, and any edge. The current edge
type will be displayed on the upper right corner of the screen.
(1) Rising edge: Triggers at the rising edge of the signal.
(2) Falling edge: Triggers at the falling edge of the signal.
(3) Any edge: Triggers at the rising edge and the falling edge of the signal.
Trigger Setting:
Press the trigger setting key to enter the trigger setting menu.
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5.3 Pulse Width Trigger
The pulse width trigger determines the trigger time according to the pulse
width, you can capture the pulse by setting the pulse width condition.
Press TRIG MENU type, select the pulse width by the Multipurpose knob.
You can also switch the trigger type by pressing the type key, then press the
Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is pulse width, the trigger
source is CH1, and the trigger level is 0.00V.
Pulse Width Trigger Menu
Source:
Press the Source button to select the trigger source, you can select CH1,
CH2, CH3, CH4, AC Line, EXT, and EXT/5. The currently selected source
is displayed at the upper right corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Condition:
Press the condition key to select “ > ”, “ < ”, “ = ”.
(1) > : Triggers when the pulse width of the trigger signal is greater than the
pulse width setting time.
(2) < : Triggers when the pulse width of the trigger signal is less than the pulse
width setting time.
(3) = : Triggers when the pulse width of the trigger signal is equal to the pulse
width setting time.
Pulse Width Setting:
Adjust the Multipurpose knob (shuttle knob or numeric keypad) to set the
pulse widthtime.
Pulse Width Polarity:
Press the pulse width polarity key to select the positive pulse width and
negative pulse width.
In the oscilloscope, the time difference between the two points where the
trigger level intersects with the positive pulse is defined as the positive pulse
width; the time difference between the two points where the trigger level
intersects with the negative pulse is defined as the negative pulse width, as
shown in the figure below.
Positive
pulse width
Trigger
level
Negative
pulse width
Trigger
level
Trigger Setting:
Please refer to the “Trigger Setting” in the edge trigger section.
5.4 Video Trigger
The video signal may contain the image information and the time sequence
information, and it has a variety of standards and formats. The UPO3000E
can be triggered on the field or line of the NTSC (National Television Standards
Committee), PAL (Phase Alternating Line), SECAM (Sequential Couleur A
Memoire) standard video signals.
Press TRIG MENU type, and select video by the Multipurpose knob.
You can also switch the trigger type by consecutively pressing the type key,
then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is video, and the trigger
source is CH1.
21
Video Trigger Menu
Source:
Press the source button to select the trigger source, you can select CH1,
CH2, CH3, CH4, EXT, and EXT/5. The currently selected source is displayed
at the upper right corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Video Format:
Press the video format button to select PAL，NTSC, and SECAM.
(1) PAL: The frame frequency is 25 frames per second, the TV scan line is
625 lines, the odd field is in the front and the even field is in the rear.
(2) NTSC: The field frequency is 60 fields per second, the frame frequency
is 30 frames per second. The TV scan line is 525 lines. The even field is
in the front and the odd field is in the rear.
(3) SECAM: The frame frequency is 25 frames per second, the TV scan line
is 625 lines, interlaced scanning.
Video Synchronization:
Press the video synchronization button to select the even field, odd field, all
lines and specified lines.
(1) Even field: Set to trigger and synchronize on the even field of the video
signal.
(2) Odd field: Set to trigger and synchronize on the odd field of the video signal.
(3) All lines: Set to trigger and synchronize on the line signal of the video signal.
(4) Specified lines: Set to trigger and synchronize on the specified video lines.
You can use the Multipurpose knob to specify the line number, and its
setting range is from 1 to 625 (PAL/SECAM), or from 1 to 525 (NTSC).
Tip: In order to observe the waveform details more clearly in the video signal,
you can set the memory depth a little bigger. The UPO3000E series utilize
the UNI-T original digital three-dimensional technology, it uses a multi-level
grayscale display function so that different brightness can reflect the frequency
of different parts of the signal. Experienced users can quickly judge the signal
quality during the debugging process and find the unusual conditions.
5.5 Slope Trigger
When slope trigger is selected, trigger occurs when the rise or fall slope
value matches the value in settings.
Press TRIG MENU type, and select slope by the Multipurpose knob.
You can also switch the trigger type by consecutively pressing the type key,
then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is slope, the trigger
source is CH1, and the threshold high level or low level is 0.00V.
Slope Trigger Menu
Source:
Press the source button to select the trigger source, you can select CH1,
CH2, CH3, and CH4. The currently selected source is displayed at the upper
right corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
Slope Setting:
Press the slope setting button to enter the slope setting menu.
Slope:
Press the slope button to select the slope trigger edge: rising edge and falling
edge.
(1) Rising edge: Performs slope trigger by using the rising edge of the trigger
signal.
(2) Falling edge: Performs slope trigger by using the falling edge of the trigger
signal.
22
Condition:
Press the condition button to select the trigger condition: “>”, ”<”, ”=”.
(1) >: Triggers when the slew rate of the trigger signal is greater than the set
slew rate.
(2) <: Triggers when the slew rate of the trigger signal is less than the set
slew rate.
(3) =: Triggers when the slew rate of the trigger signal is basically the same
as the set slew rate.
Time Setting:
Adjust the Multipurpose knob (shuttle knob or numeric keypad) to set the
time setting.
Threshold Value:
Press the threshold button to select the threshold value: low level, high level,
high and low level. You can also directly press the LEVEL knob in the trigger
control area to quickly switch between selections.
(1) Low level: The low level threshold can be adjusted by the LEVEL knob.
(2) High level: The high level threshold can be adjusted by the LEVEL knob.
(3) High and low level: The high and low level thresholds can be simultaneously
adjusted by the LEVEL knob.
Note: The formula for calculating the slew rate is
(High level threshold - Low level threshold) ÷ Time
For the set slew rate, the time here is the time setting value. For the slew
rate of the trigger signal, the time here refers to the time value between two
intersection points where the high level, low level intersect with the trigger
signal.
5.6 Runt Trigger
The runt trigger is used to trigger a pulse that has crossed one trigger level
but not the other. In this oscilloscope, the positive runt pulse is the pulse
that crosses the lower limit of the trigger level but does not cross the upper
limit of the trigger level; the negative runt pulse is the pulse that crosses the
upper limit of the trigger level but does not cross the lower limit of the trigger
level, as shown in the following figure.
Positive runt pulse
Negative runt pulse
High level of the trigger level
Low level of the trigger level
Press TRIG MENU type, and select runt by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is runt, the trigger source is
CH1, and the low level of the trigger level is -760mV.
Runt Trigger Menu
Source:
Press the source button to select the trigger source, you can select CH1,
CH2, CH3, and CH4. The currently selected source is displayed at the upper
right corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
23
Polarity:
Press the polarity key to select the trigger polarity: positive and negative.
(1) Positive: Set to trigger on the positive runt pulse.
(2) Negative: Set to trigger on the negative runt pulse.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
Condition:
Press the condition button to select the condition: None, >, <, =.
(1) None: Does not set the runt pulse trigger condition.
(2) >: Triggers when the runt pulse width is greater than the set pulse width.
(3) <: Triggers when the runt pulse width is less than the set pulse width.
(4) =: Triggers when the runt pulse width is equal to the set pulse width.
Setting:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set the time.
Trigger Level:
Press PgDn trigger level to select low level or high level. You can also
directly press the LEVEL knob in the trigger control area to quickly switch
between selections.
(1) Low level: The low level of the runt trigger can be adjusted by the LEVEL
knob.
(2) High level: The high level of the runt trigger can be adjusted by the LEVEL
knob.
5.7 Window Trigger
Select the window trigger, its trigger level has a high level and a low level.
The oscilloscope triggers when the rising edge of the input signal crosses
the high level or the falling edge crosses the low level.
Press TRIG MENU type, and select window by the Multipurpose knob.
You can also switch the trigger type by consecutively pressing the type key,
then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is window, the trigger
source is CH1, and the low level of the trigger level is 124mV.
Window Trigger Menu
Source:
Press the source key to select the source, you can select CH1, CH2, CH3,
and CH4. The currently selected source is displayed at the upper right corner
of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Slope:
Press the slope key to select which slope the input signal will trigger on, you
can select the rising edge, falling edge, and any edge. The currently slope
type is displayed at the upper right corner of the screen.
(1) Rising edge: Triggers on the rising edge of the input signal and when the
voltage level is higher than the set high level.
(2) Falling edge: Triggers on the falling edge of the input signal and when
the voltage level is lower than the set low level.
(3) Any edge: Triggers on any edge of the input signal and when the voltage
level meets the set level.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
Position:
Press the position key to select the trigger position of enter, exit and time to
further determine the trigger time.
(1) Enter: Triggers when the input signals enter into the specified trigger level
range.
(2) Exit: Triggers when the input signals exit out of the specified trigger level
range.
(3) Time: Triggers when the accumulated hold time after the window enter
is greater than or equal to the set window time.
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Trigger Level:
Press PgDn trigger level to select low level or high level. You can also
directly press the LEVEL knob in the trigger control area to quickly switch
between selections.
(1) Low level: The low level of the window trigger can be adjusted by the
LEVEL knob.
(2) High level: The high level of the window trigger can be adjusted by the
LEVEL knob.
Setting:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob or numeric
keypad) to set.
5.8 Delay Trigger
Delay trigger needs to set the trigger source 1 and source 2. The oscilloscope
triggers when the time difference (△T) between the edge 1 set by source
1 and the edge 2 set by source 2 meets the preset time limit. As shown in
the following figure.
Set edge 1 and edge 2 as the rising edge, △T is the range marked in red in
the above figure.
Note: Edge 1 and edge 2 must be the adjacent edges.
Press TRIG MENU type, select delay by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is delay, the trigger
source is CH2, and the low level of the trigger level is 0.00V.
Delay Trigger Menu
Source 1:
Press the source 1 key to select the trigger source, you can select CH1,
CH2, CH3, and CH4. The currently selected source is displayed at the upper
right corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Edge 1:
Press the edge 1 key to select the trigger edge: rising edge, and falling edge.
(1) Rising edge: Set to trigger at the rising edge of source 1.
(2) Falling edge: Set to trigger at the falling edge of source 1.
Source 2:
Press the source2 key to select the trigger source, you can select CH1, CH2,
CH3, and CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Edge 2:
Press the edge 2 key to select the trigger edge: rising edge, and falling edge.
(1) Rising edge: Set to trigger at the rising edge of source 2.
(2) Falling edge: Set to trigger at the falling edge of source 2.
25
Condition:
Press PgDn condition to select: >, <, < >, > <.
(1) >: Triggers when the time difference (△T) between the edge set by source
1 and the edge set by source 2 is greater than the set time limit.
(2) <: Triggers when the time difference (△T) between the edge set by source
1 and the edge set by source 2 is less than the set time limit.
(3) < >: Triggers when the time difference (△T) between the edge set by
source 1 and the edge set by source 2 is greater than the set lower time
limit and less than the set upper time limit.
(4) > <: Triggers when the time difference (△T) between the edge set by
source 1 and the edge set by source 2 is less than the set lower time limit
and greater than the set upper time limit.
Time:
Press PgDn time to choose: normal, upper time limit, and lower time limit.
(1) Normal: When the trigger condition is “>” or “<”, this key can only be normal.
(2) Upper time limit: User can select this option when the trigger condition is
“< >” or “> <”.
(3) Lower time limit: User can select this option when the trigger condition is
“< >” or “> <”.
Setting:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob or numeric
keypad) to set.
5.9 Timeout Trigger
Select the timeout trigger to trigger the signal that the time interval (△T) from
the rising edge (or falling edge) of the input signal crosses the trigger level
to the adjacent falling edge (rising edge) crosses the trigger level is greater
than the set timeout time. As shown in the following figure.
Press TRIG MENU type, and select timeout by the Multipurpose knob.
You can also switch the trigger type by consecutively pressing the type key,
then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is timeout, the trigger
source is CH1 and it is triggered at the rising edge, the trigger level is 0.00V.
Timeout Trigger Menu
Source:
Press the source key to select the trigger source, you can select CH1, CH2,
CH3, and CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Slope:
Press the slope key to select which edge the input signal will trigger on, you
can select the rising edge, falling edge, and any edge. The currently edge
type is displayed at the upper right corner of the screen.
(1) Rising edge: Set to start timing when the rising edge of the input signal
passes the trigger level.
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(2) Falling edge: Set to start timing when the falling edge of the input signal
passes the trigger level.
(3) Any edge: Set to start timing when any edges of the input signal pass the
trigger level.
Timeout Time:
Adjust the Multipurpose knob (shuttle knob or numeric keypad) to set the
timeout time.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
5.10 Duration Trigger
With duration trigger selected, the oscilloscope identifies the trigger condition
by looking for the duration of the specified codes. The codes are the combination
of channel logic “AND”, and the value of each channel can be H (high), L (low),
or X (ignored). When the duration (△T) of the code meets a preset time,
trigger occurs. As shown below.
CH2
CH3
CH4
CH1
Picture 5-7 Duration trigger
Press TRIG MENU type, select duration by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is duration, the trigger
source is CH1 and it is triggered at the rising edge, the trigger level is 0.00V.
Duration Trigger Menu
Source:
Press the source key to select the trigger source, you can select CH1, CH2,
CH3, and CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Code:
Press the code key to select H, L, X. The code setting of each channel is
displayed at the bottom of the screen, as shown in the figure: .
(1) H: Set the code value of the selected channel to “High”, that is, the
voltage level is higher than the trigger level of the channel.
(2) L: Set the code value of the selected channel to “Low”, that is, the voltage
level is lower than the trigger level of the channel.
(3) X: Set the code value of the selected channel to “Ignored”, that is, the
channel is not part of the codes. The oscilloscope will not trigger if all
channels in the codes are set to “ignored”.
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Condition:
Press the condition key to select: >, <, < >.
(1) >: Triggers when the code duration is greater than the set time.
(2) <: Triggers when the code duration is less than the set time.
(3) < >: Triggers when the code duration is less than the set upper time limit
and greater than the set lower time limit.
Time Setting:
Press the time setting key to choose: normal, upper time limit, and lower
time limit.
(1) Normal: When the trigger condition is “ > ” or “ < ” , this key can only be
normal.
(2) Upper time limit: User can select this option when the trigger condition
is “< >”.
(3) Lower time limit: User can select this option when the trigger condition
is “< >”.
Setting:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
5.11 Setup/Hold Trigger
In setup/hold trigger, you need to set up the data signal line and clock signal
line. The setup time begins when the data signal crosses the trigger level
and ends when the specified clock edge arrives. The hold time begins when
the specified clock edge arrives and ends when the data signal crosses the
trigger level again (as shown below). The oscilloscope will trigger when the
setup time or the hold time is less than the preset time.
Press TRIG MENU type, and select setup/hold by the Multipurpose
knob. You can also switch the trigger type by consecutively pressing the
type key, then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is setup/hold, the trigger
source is CH1, and the trigger level is 0.00V.
Setup/Hold Trigger Menu
Data Source:
Press the data source key to select CH1, CH2, CH3, or CH4.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Code:
Press the code key to select H or L.
(1)H: Set the valid code of the data signal to high level.
(2)L: Set the valid code of the data signal to low level.
Clock Source:
Press the clock source key to select CH1, CH2, CH3, or CH4。
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
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Clock Edge:
Press the clock edge key to select the clock edge type: rising edge, or falling
edge.
(1)Rising edge: Set the clock edge type to rising edge.
(2)Falling edge: Set the clock edge type to falling edge.
Setup/Hold:
Press PgDn setup/hold to select setup, hold, setup & hold.
(1) Setup: Triggers when the setup time is less than the set value.
(2) Hold: Triggers when the hold time is less than the set value.
(3) Setup & Hold: Triggers when the setup time and the hold time are less
than the set value.
Time:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob
or numeric keypad) to set the time.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
5.12 Nth Edge Trigger
The Nth edge trigger is triggered on the Nth edge after the specified idle time.
For example, in the following waveform, it is set to trigger on the 2nd rising
edge after the specified idle time (the time between two adjacent rising edge),
then set the idle time as P< idle time <M, M is the time between the 1st rising
edge and the next rising edge, P is the maximum time between the counting
rising edge.
Press TRIG MENU type, and select Nth edge by the Multipurpose knob.
You can also switch the trigger type by consecutively pressing the type key,
then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is Nth edge, the trigger
source is CH1, it is triggered at the rising edge and the trigger level is 0.00V.
Nth Edge Trigger Menu
Source:
Press the source key to select the trigger source, you can select CH1, CH2,
CH3, or CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Slope:
Press the slope key to select which edge the input signal will trigger on, you
can select the rising edge, falling edge, and any edge. The current edge
type is displayed at the upper right corner of the screen.
(1) Rising edge: Set to trigger on the rising edge of the signal.
(2) Falling edge: Set to trigger on the falling edge of the signal.
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Idle Time:
Adjust the Multipurpose knob (shuttle knob or numeric keypad) to set the
idle time.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
Edge Value:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set the number of edges.
5.13 Code Pattern Trigger
The code pattern trigger identifies the trigger condition by looking for the
specified code patterns. The code type is the combination of the channel logic
"AND", each channel can be set to H (high), L (low), X (ignored). You can
also specify a path in the code type as a rising edge or falling edge (only
one edge can be specified). If the code pattern of the other channels are
"true" (i.e., the actual code is consistent with the default code type), the
oscilloscope will trigger on the specified edge. If the edge is not specified,
the oscilloscope will trigger at the last edge of the code type "true". If the code
pattern of all channels are set to "ignore", the oscilloscope will not trigger.
Press TRIG MENU type, and select code pattern by the Multipurpose
knob. You can also switch the trigger type by consecutively pressing the type
key, then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is code pattern, the
trigger source is CH1, and the trigger level is 0.00V.
Nth Edge Trigger Menu
Source:
Press the source key to select the trigger source, you can select CH1, CH2,
CH3, or CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Code Pattern:
Press the code key to select H, L, X, rising edge, or falling edge. The code
pattern setting of each channel is displayed at the bottom of the screen, as
shown: 。
(1) H: Set the code pattern value of the selected channel to “High”, that is,
the voltage level is higher than the trigger level of the channel.
(2) L: Set the code pattern value of the selected channel to “Low”, that is,
the voltage level is lower than the trigger level of the channel.
(3) X: Set the code pattern value of the selected channel to “Ignored”, that is,
the channel is not part of the code pattern. The oscilloscope will not trigger
if all channels in the code pattern are set to “ignored”.
(4) Rising edge: Set the code pattern to the rising edge of the selected channel.
(5) Falling edge: Set the code pattern to the falling edge of the selected channel.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
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Chapter 6 Protocol Decoding
UPO3000E decodes the input signals of the analog channels using common
protocols, including parallel, RS232, I2C, SPI, CAN, LIN, and FlexRay. Users
can easily find errors, debug hardware, and speed up development progress
by protocol decoding, which provides guarantees for completing projects with
high speed and high quality.
6.1 RS232 Decoding (Optional)
RS232 interface is the standard asynchronous transmission interface
established by Electronic Industries Association. Normally, there are two
application types: DB-9 and DB-25, it is suitable for data transmission rate
between 0 to 20000b/s, which are widely used in PC communication interface.
According to the protocol, the data will be combined to form a group of
specific serial bits, and sent out using asynchronous serial method. The data
sent each time is composed according to the following rules: a start bit is
sent first, followed by 5~8 data bits, then an optional parity bit, and finally
1 or 2 stop bits. The data bits size should be decided by the two communication
parties, which can be chosen between 5 to 8 data bits; there may be no
parity bits, or the odd parity or even parity can be selected; and the stop bit
can be 1 bit or 2 bits. In the following instruction, a data string transmission
is called one frame, shown in the figure below:
RS232 Selection:
Press DECODE type, and select RS232 by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
Source:
Press the source key to select the trigger source, you can select CH1, CH2,
CH3, or CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger and correct decoding.
Polarity:
Press the polarity key to choose the trigger polarity: Positive polarity or negative
polarity.
(1) Negative polarity: Opposite logic level polarity, i.e. high level is 0, low
level is 1.
(2) Positive polarity: Normal logic level polarity, i.e. high level is 1, low level
is 0.
Baud Rate:
RS232 communication is an asynchronous transmission communication
without clock signals during the data transmission process. In order to solve
the data bit problems, the protocol specifies that both communication parties
need to agree on the baud rate. Normally, the baud rate is defined as bits
transmitted within 1 second. For example, 9600bps means that 9600 bits
can be transmitted within 1 second. Note that the start bit, data bit, parity
bit and stop bit are all regarded as bits. Therefore, baud rate is not directly
equal to valid data transmission rate. The oscilloscope will sample the Bit
value according to the set baud rate.
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Press the polarity key to select 2400bps, 4800bps, 9600bps, 19200bps,
38400bps, 57600bps, 115200bps, or user-defined. When selects the
user-defined option, adjust the baud rate by the Multipurpose knob or the
shuttle knob.
It is recommended to make reasonable settings based on your RS232
communication hardware and software. Limited by the basic model of the
transmission protocol, the RS232 protocol is usually used in short distance
(below 20m) and low speed (1Mbps) transmission occasions. Communication
beyond these ranges can be disturbed easily or become unreliable.
Bit Width:
Specifies the data bit width of the RS232 protocol signal that needs to be
decoded. Press PgDn bit width to select 5bits, 6bits, 7bits, or 8bits.
Bit Sequence:
Specify the data bits of the RS232 protocol signal that needs to be decoded
are high bit in front (MSB) or low bit in front (LSB).
Press PgDn bit sequence to select MSB or LSB.
(1) MSB: The high bit of the data transmits first.
(2) LSB: The low bit of the data transmits first.
Stop Bit:
Press PgDn stop bit to set the stop bit for each frame of data, you can
set it to 1 bit or 2 bits.
Parity:
Press PgDn parity to set the parity mode for data transmission, you can
choose none, even parity or odd parity.
Trigger Condition:
Press PgDn trigger condition to select start of frame, error frame, parity
error, and data.
(1) Start of Frame: The waveform trigger is at the start bit of the RS232
protocol (refer to figure). Stable waveforms can be observed by choosing
the start of frame trigger when single string signals or multiple same string
signals are sent. If the data being sent is changing, the waveform will
also change correspondingly.
(2) Error Frame: 0 occurs in the stop state or a data error occurs in the middle
of the data bits during the receiving process.
(3) Parity Error: Set the RS232 parity bit to 0 or 1 according to the parity
principles, the principles are as follows:
Odd Parity: If the total number of 1 in the data bits and parity bits is odd,
the transmission is correct.
Even Parity: If the total number of 1 in the data bits and parity bits is
even, the transmission is correct.
With this option, you can quickly find the parity errors during the RS232
communication process, which is convenient for fault analysis and
positioning.
(4) Data: Triggers when the data acquired by the oscilloscope is equal to
the 2 hexadecimal values set by the user. With this option, you can quickly
find the transmission signal with specific data that you are interested in.
Data:
Valid when the trigger condition is data, it can be 00 ~ FF (hexadecimal
number). Set the data using the Multipurpose knob.
Decode Bus:
Press PgDn decode bus to enter the decode bus menu.
(1) Bus Status: Set the decode bus to on or off.
(2) Display Format: Set the display format of decode bus, you can set
hexadecimal, decimal, binary or ASCII.
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(3) Even List: Displays the decoded data, corresponding line number , time
and error information of the data line in a tabular form for easily observe
the longer decoded data.
(4) Pseudo Square Wave: Select on and the bus shows a square wave with
logic 1 for high level and logic 0 for low level.
(5) Vertical Position: Adjust the Multipurpose knob to change the bus display
position.
(6) Data Packet: After the device is paused, user can view the decoded data
packets.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
6.2 I2C Decode (Optional)
I2C protocol is usually used to connect a microcontroller and its peripheral
equipment, and it is widely used in the field of microelectronics communication
control. The bus protocol uses two lines to transmit. One is serial data line
SDA, the other is serial clock line. The HOS-SLAVE mechanism is adopted,
which is a 2-way communication between host and slave. The bus is multi-host
which prevents data destruction through collision detection and arbitration
mechanism. It's remarkable that I2C bus has two kinds of address width: 7
bits and 10 bits. The two are compatible and can be combined. Both SCL
and SDA are connected to power through pull-up resistors. When the bus
is vacant, the two lines are at high level. When any component of bus outputs
low level, the bus signals will become low. That is to say, the signals of
multi-components are wired AND logic. The special logic relationship is the
key point to realize bus arbitration. The protocol requires that data SDA should
keep stable when clock line SCL is high. Normally, the data is transmitted
by MSB format, as shown below:
I2C Selection:
Press DECODE type, and select I2C by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
SCL Source:
Press the SCL source key to select the SCL source, you can set any of
CH1~CH4 as the clock input of I2C.
SDA source:
Press the SDA source key to select the SDA source, you can set any of
CH1~CH4 as the data input of I2C.
Address Mode:
Press the address key to select the address mode and set the address bit
width of I2C signal that needs to be triggered, you can select 7bits or 10bits.
Operation Direction:
Press PgDn operation direction to select write or read.
(1) Write: Triggers when the “read/write” bit of the I2C protocol is “write”.
(2) Read: Triggers when the “read/write” bit of the I2C protocol is “read”.
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Trigger Condition:
Press PgDn trigger condition to set the I2C trigger condition: Start, restart,
stop, loss, address, data, address & data.
(1) Start: Triggers at the start time, that is, while the SCL is in high level, the
SDA signal has a falling edge.
(2) Restart: Triggers at the restarting moment, that is, after a start signal,
and before it stops, the start signal appears again.
(3) Stop: Triggers when the stop bit occurs, that is, while the SCL is in high
level, the SDA signal jumps from low to high.
(4) Loss: In I2C protocol, every time after 8 bits of information are transmitted,
the data receiver needs to send an acknowledgement signal, which is the
ACK bit in the above figure when the SCL is in high level, the SDA signal
is low. The loss trigger will occur while the SCL and SDA signal at the ACK
bit are both high.
(5) Address: Triggers when the communication address is the same with the
user setting address. It can help to quickly locate the address transmission.
(6) Data: Triggers when the detected data is equal to/greater than/less than
/not equal to the set Value. This feature is convenient for the data analysis
and can capture the abnormal data.
(7) Address & Data: Triggers when the addresses are the same and the data
relationship meets the set conditions during the transmission process.
This trigger condition makes it easy to implement the I2C’s specified
address and data trigger, and help to analyze the transmission.
Data Setting:
Press PgDn data setting to enter the data setting menu.
(1) Comparison condition: Used to determine the data, you can select >, <, =.
>: Valid when the trigger condition is data or address/data, triggers when
the actual I2C protocol data is greater than the set data.
<: Valid when the trigger condition is data or address/data, triggers when
the actual I2C protocol data is less than the set data.
=: Valid when the trigger condition is data or address/data, triggers when
the actual I2C protocol data is equal to the set data.
(2) Bytes: Valid when the trigger condition is data or address/data, set the
data byte size of the specified data from 1~5.
(3) Data: Valid when the trigger condition is data or address/data, each byte
length can be set from 00 ~ FF (hexadecimal number). You can set the
data by the Multipurpose knob, and press the back key to return to the
previous setup menu.
Decode Bus:
Please refer to the RS232 Decode Bus.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
6.3 USB Decode (Optional)
USB（Universal Serial Bus）is a serial bus standard for connecting computer
systems to their peripheral devices, and it is also a technical specification
for input and output interfaces. USB uses differential pairs to transmit signals,
different protocol versions define different transmission rates such as low
speed (1.5Mbps), full speed (12Mbps), high speed (480Mbps), and over
speed (5Gbps). The UPO3000E provides both low speed and full speed rates.
USB Selection:
Press DECODE type, and select USB by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
D + Source:
Press the D + source key to set any of CH1 ~ CH4 as the USB D+ input.
34
D - Source:
Press the D - source key to set any of CH1 ~ CH4 as the USB D- input.
Speed:
Press the speed key to set low speed (1.5Mbps) or full speed (12Mbps).
Trigger Condition:
Press the trigger condition key to set the USB trigger condition. UPO3000E
provides synchronization, reset, pause, restore, packet tail, token packet,
data packet, handshake packet, and error.
When the trigger condition is token packet, set the following:
(1) Token Type: Includes 5 types: Any, OUT, IN, SOF, SETUP.
(2) Endpoint: Adjust the Multipurpose knob to set the endpoint position.
(3) Comparison Condition: Includes 8 types: = , != , < , > , >= , <= , <> and >< .
(4) Address: Adjust the Multipurpose knob to set the address value.
When the trigger condition is handshake packet, set the following:
Type: Select any, ACK, NAK, or STALL.
When the trigger condition is data packet, set the following:
(1) Data Type: Includes 3 types: Any, DATA0, DATA1.
(2) Bytes: Adjust the Multipurpose knob to set the number of bytes.
(3) Offset: Adjust the Multipurpose knob to set the offset value.
(4) Comparison Condition: Includes 8 types: = , != , <, > , >= , <= , <> and >< .
(5) Data Setting: Adjust the Multipurpose knob to set the data value.
Decode Bus:
Please refer to the RS232 Decode Bus.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
6.4 CAN Decode (Optional)
CAN (Controller Area Network) is a kind of serial communication protocol,
which allows devices on the network to communicate with each other directly,
and there is no need for the host to control the communication on the network.
It adopts the differential signal transmission and uses the bit stuffing method
for signal encoding. It will insert a complement bit after every 5 identical bits,
and the high bytes data will be sent first. The CAN protocol signal format is
shown in the figure below:
CAN Selection:
Press DECODE type, and select CAN by the Multipurpose knob. You
can also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
Signal Type:
Press the signal type key to set the CAN signal type: CAN_L, CAN_H, RX/TX
and Diff.
Input +:
Press the input + key to set any of CH1 ~ CH4 as a signal of CAN decoding
or differential bus.
Input -:
Press the input - key to set any of CH1~CH4 as a signal of differential bus.
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Sample %：
Adjust the Multipurpose knob or shuttle knob to set the “Input -” sampling
point ratio (1%~99%).
Trigger Condition:
Press PgDn trigger condition to set CAN trigger condition: Frame start,
frame type, ID, data, missing ACK, fill error, ID and data, frame end.
Frame Start: Triggers at the start of the CAN protocol data frame.
Frame Type: Triggers on the specified frame type, including data frame,
remote frame, error frame, and overload frame.
ID: Set the ID for the specified frame type, and triggers on the specified ID.
Data: A 2-digit hexadecimal number of 1~8 bytes can be set. When the actual
CAN protocol signal and the set data meet the data qualification conditions,
a trigger occurs. The data qualification includes <, >, ≤, ≥, =, !=.
Missing ACK: Triggers when the ACK Field of the data frame is lost.
Fill Error: Since the CAN signal encoding uses bit stuffing, a complement
bit is inserted after every 5 identical bits, and it triggers when the complement
bit is filled incorrectly.
ID and Data: Triggers when it meets the ID and data conditions at the same time.
Frame end: Triggers at the end of the data frame.
Frame Type:
When the trigger condition is frame type, you can set data frame, remote
frame, error frame, and overload frame.
(1) Data Frame: Triggers on the data frame of the CAN protocol signal. The
data frame format is as follows:
(2) Remote Frame: Triggers on the remote frame of the CAN protocol signal.
Remote frames are the same as data frames except that there is no data
field. Remote frames and data frames are differentiated by the arbitration
field RTR bit.
(3) Error Frame: Triggers on the error frame of the CAN protocol signal. The
error frame is represented by a 6-bit continuous level that breaks the bit
stuffing rule followed by a recessive value (logic 1) of a minimum of 8 bits
as the error delimiter. Error frames are divided into active error frames
and passive error frames. Active error frames use 6-bit dominant values
(logic 0), and passive frames use recessive values.
(4) Overload Frame: Triggers on the overload frame of the CAN protocol
signal. The overload frame format is the same as the active error frame.
Press the type key and you can set the frame type.
ID Setting:
When the trigger condition is ID or ID/ data, ID setting is required.
Press PgDn ID setting to enter the ID setting menu:
Format: Set as standard frame or extended frame.
Standard: Standard ID can be 000 ~ FFF.
Extended: Extended ID can be 00000 ~ FFFFF.
Direction: Set the ID direction to read or write.
After setting the ID, press the back key to return to the previous setting menu.
Data Setting:
When the trigger condition is data or ID/data, data setting is required.
Press PgDn data setting to enter the data setting menu:
Comparison condition: Includes 6 types: = , != , < , > , <= , >=.
Bytes: 1 ~ 8 bytes can be set.
Data: Adjust the Multipurpose knob to set the data, press the knob to jump
to the next digit to adjust.
After setting the data, press the back key to return to the previous setting
menu.
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Baud Rate:
Press PgDn baud rate to set the rate of the CAN protocol signal that
needs to be decoded, you can select 10kb/s, 20kb/s, 33.3kb/s, 50kb/s,
62.5kb/s, 83.3kb/s, 100kb/s, 125kb/s, 1Mb/s or user-defined.
In user-defined, customize the baud rate by adjusting the Multipurpose knob
or shuttle knob.
Decode Bus:
Please refer to the RS232 Decode Bus.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
6.5 SPI Decode (Optional)
SPI interface is a kind of synchronous serial peripheral interface, which can
make the host and all kinds of peripheral equipment undertake communication
through the serial methods. It is a kind of synchronous communication bus
of full duplex. It usually uses four signal lines: MOSI: the host data output,
the slave data input; MISO: the host data input, the slave data output;
SCLK: clock signal generated by the host; CS: the slave chip selection enable
signal.
SPI interface is mainly used for synchronous serial data transmission between
the host and low speed peripheral devices. Under the shift pulse of the host,
the data is transmitted in bytes, that is to say, higher byte first and then lower
byte. Since the SPI interface does not need to look for the slave address
and is full duplex communication, the protocol itself is relatively simple and
therefore is widely used. SPI protocol transmission is shown in the following
picture:
Note: At least 3 output channels are required. Therefore, this function is only
available on the 4-channel product of UPO3000E series oscilloscopes.
SPI Selection:
Press DECODE type, and select SPI by the Multipurpose knob. You can
also switch the trigger type by consecutively pressing the type key, then
press the Multipurpose knob to confirm.
CS Source:
Press the CS source key to set any of CH1~CH4 as the chip select input of
the SPI decoded signal.
SCLK Source:
Press the SCLK source key to set any of CH1~CH4 as the clock input of the
SPI decoded signal.
MOSI Source:
Press the MOSI source key to set any of CH1~CH4 as the data MOSI input
of the SPI decoded signal.
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MISO Source:
Press the MISO source key to set any of CH1~CH4 as the data MISO input
of the SPI decoded signal.
CS Polarity:
Press PgDn CS polarity, to set the polarity of the chip select signal: positive
polarity or negative polarity.
Positive polarity: Valid when the chip select signal is positive.
Negative polarity: Valid when the chip select signal is negative.
SCLK Edge:
Press PgDn SCLK edge to set the clock signal edge: rising edge or
falling edge.
Rising edge: Triggers at the rising edge of the clock signal.
Falling edge: triggers at the falling edge of the clock signal.
MOSI Polarity:
Press PgDn MOSI polarity to set the MOSI polarity of the data signal:
positive polarity or negative polarity.
MISO Polarity:
Press PgDn MISO polarity to set the MISO polarity of the data signal:
positive polarity or negative polarity.
Bit Sequence:
Press PgDn bit sequence to set the data bits of the SPI protocol signal
are high bit in front (MSB) or low bit in front (LSB).
Bit Width:
Press PgDn bit width to set the bid width of each frame of the SPI protocol
signal, it can be 4 ~ 16.
Trigger Condition:
Press PgDn trigger condition to set the SPI trigger condition: Enable
chip select or idle time.
Enable chip select includes CS, CS & MOSI, CS & MISO, CS & Any. It triggers
on the edge where the chip select level jumps from invalid to valid.
Idle time includes Idle, Idle & MISO, Idle & MOSO, Idle & Any. The idle trigger
is triggered at the beginning of a new segment of data after a certain idle time.
Idle Time:
Press PgDn idle time and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set the idle time, the idle time counter counts when the
SCK is unchanged, and judges whether the count value exceeds the preset
value at the SCK valid edge, if exceeds, the oscilloscope will trigger at the
valid edge and clear the counter.
Frame Length:
Press PgDn frame length and adjust the Multipurpose knob to set the
length of the data frame.
Data:
Press PgDn data and adjust the Multipurpose knob to set the data, press
the knob to jump to the next digit to adjust.
Decode Bus:
Please refer to the RS232 Decode Bus.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
38
Chapter 7 Mathematical Operation
UPO3000E series oscilloscope carries a variety of mathematical operations:
Math: Source 1 + source 2, source 1 - source 2, source 1 * source 2,
source 1 / source 2
FFT: Fast Fourier Transform
Logic operation: AND, OR, NOT, XOR
Digital filter
Advanced operation
Press the MATH button on the vertical control area to enter the mathematical
operation menu. The POSITION and the SCALE knobs can be used to change
the vertical position and the vertical scales of the waveforms. The horizontal
time base scale cannot be adjusted independently for the math operation
waveforms, it will change automatically according to the horizontal time base
scale of the analog input channel.
Math operation cursor marks the result of a mathematical operation.
7.1 Mathematical Function
Press MATH type, and select math to enter the math menu.
Source 1:
Press the source 1 key to select any of CH1, CH2, CH3, CH4 as source 1
of mathematical operations.
Operator:
Press the operator key to select +, -, *, /.
(1) +: The waveforms of source 1 and source 2 are added point by point.
(2) -: The waveforms of source 1 and source 2 are subtracted point by point.
(3) *: The waveforms of source 1 and source 2 are multiplied point by point.
(4) /: The waveforms of source 1 and source 2 are divided point by point.
Source 2:
Press the source 2 key to select any of CH1, CH2, CH3, CH4 as source 2
of mathematical operations.
7.2 FFT
Using FFT (Fast Fourier Transform) mathematical operations, the time
domain signal (YT) can be converted into frequency domain signal. The
following types of signals can be easily observed using FFT:
Harmonic content and distortion in measurement system
Performance of noise in DC power supply
Vibration Analysis
Picture 5-1FFT frequency spectrum
Press MATH type and select FFT to enter the FFT menu.
Source:
Press the source key to select any of CH1, CH2, CH3, CH4 as the source
of FFT operations.
39
Window:
Window function, press the window key to select Hamming, Blackman,
Rectangle, or Hanning.
(1) Rectangle: It has the best frequency resolution and the worst amplitude
resolution, which is similar to the one with no window. It is suitable for
measuring the following
waveforms:
Transient or short pulse, the signal level is almost equal before and after this.
Equal amplitude sine wave with very similar frequency.
Wide-band random noise in a slowly changing spectrum.
(2) Hanning: Compared with the rectangle window , it has better frequency
resolution, but poorer amplitude resolution. It is suitable for measuring
sine, periodic and narrow-band random noise waveforms.
(3) Hamming: The frequency resolution is slightly better than that of Hanning
window, and it is suitable for measuring transient or short pulse, and the
waveform with great difference before and after the signal level.
(4) Blackman : It has the best amplitude resolution, and the worst frequency
resolution. It is suitable for measuring the single frequency signals or
seeking higher harmonics.
Vertical Unit:
The unit of the FFT operation result. Press vertical unit to select Vrms or
dBVrms. Vrms and dBVrms displays the vertical amplitude in a logarithmic
way and a linear way. If you need to display the FFT spectrum in a large
dynamic range, dBVrms is recommended.
Screen Setting:
Press the screen setting key to set full screen or split screen.
(1) Split screen: Displays the source waveform and the waveform of FFT
operation result separately.
(2) Full screen: Displays the source waveform and the FFT operation results
on the same window that you can observe the spectrum more clearly and
make more accurate measurements.
FFT Operation Tips
Signals with DC components or deviations can cause errors or deviations
in the FFT waveform components. To reduce the DC component, the
channel can be set to ACcoupling.
To reduce the random noise and aliasing frequency components of the
repetitive or single pulse, you can set the oscilloscope acquisition mode
to average acquisition.
7.3 Logic Operation
Press MATH type and select logic operation to enter its menu.
Expression:
Press the Expression key to select AND, OR, NOT, XOR.
(1) AND: Performs “AND” logic operation for every point of source 1 and
source 2.
(2) OR: Performs “OR” logic operation for every point of source 1 and
source 2.
(3) NOT: Performs “NOT” logic operation for every point of source 1, source
2 will not be displayed at this moment.
(4) XOR: Performs “XOR” logic operation for every point of source 1 and
source 2.
Performs logic operations for all points of the source waveform voltage and
displays the results. During operation, when the source channel voltage
value is greater than the threshold value, it is determined as logic “1”,
otherwise it is logic “0”. Converting waveforms to binary for logical operations
is shown below:
40
Source 1 Source 2 AND
OR XOR
Source1
NOT
0
0
1
1
0
1
0
1
0
0
0
1
0
1
1
1
0
1
1
0
0
1
1
0
Source 1:
Press the source 1 key to select any of CH1, CH2, CH3, CH4 as source 1
of logic operations.
Source 2:
Press the source 2 key to select any of CH1, CH2, CH3, CH4 as source 2
of logic operations.
Invert:
Press the invert key to select on or off. Select on to invert the waveform of
the logic operation.
Threshold 1:
Press the PgDn key, and adjust the Multipurpose knob to change the value
of Threshold 1. When the voltage value of the source channel is greater than
the value of Threshold 1, it is identified as logic “1”, otherwise it is logic “0”.
Threshold 2:
Press the PgDn key, and adjust the Multipurpose knob to change the value
of Threshold 2. When the voltage value of the source channel is greater than
the value of Threshold 2, it is identified as logic “1”, otherwise it is logic “0”.
7.4 Digital Filter
Press MATH type, select digital filter to enter its menu.
Source:
Press the source key to select any of CH1, CH2, CH3, CH4 as the source
of digital filter.
Filter Type:
Press the filter type key to select low pass, high pass, band pass or band
stop.
(1) Low pass: Only signals with the source frequency lower than the current
frequency upper limit are allowed to pass.
(2) High pass: Only signals with the frequency higher than the current
frequency lower limit are allowed to pass.
(3) Band pass: Only signals with the frequency that are higher than the
current frequency lower limit and lower than the current frequency upper
limit are allowed to pass.
(4) Band stop: Only signals with the frequency that are lower than the current
frequency lower limit or higher than the current frequency upper limit
are allowed to pass.
Frequency Lower Limit:
Adjust the Multipurpose knob to change the value of the frequency lower
limit. When in low pass, the frequency lower limit is invalid and the menu
is hidden.
Frequency Upper Limit:
Adjust the Multipurpose knob to change the value of the frequency upper
limit. When in high pass, the frequency upper limit is invalid and the menu
is hidden.
Note: The setting range of the frequency upper and lower limit is related
to the current horizontal time base.
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7.5 Advanced Operation
Press MATH type, select advanced operation to enter its menu.
Expression:
Press the expression key to select on or off. If you select on, it will pop up
a Math-Advance dialog box, as shown below:
Adjust the Multipurpose knob to select “Channel”, ”Function”, or ”Operator”,
then press the knob to display the options in the list after Expression.
When editing the expression, you can press the delete key to delete the
characters in the list after expression, press the clear key to clear all the
characters in the list after expression.
After the expression is edited, press the apply key and the oscilloscope will
perform calculations based on the set expression and display the result.
Press the expression key and select close to observe the result of the
expression operation.
Math-Advance Description
(1) Expression: Here refers to the formula consisting of channels, functions,
variables, and operators. The length of the expression must not exceed
36 characters.
(2) Channel: You can select CH1, CH2, CH3, or CH4.
(3) Function: Function options are as follows:
Descriptions
Calculates the logarithm of the selected source.
Calculates the index of the selected source.
Calculates the sine value of the selected source.
Calculates the cosine value of the selected source.
Calculates the tangent value of the selected source.
Calculates the square root of the selected source.
Calculates the integral of the selected source.
Calculates the discrete-time differential of the
selected source.
Functions
Log
Exp
Sin
Cos
Tan
Sqrt
Intg
Diff
Note: The device automatically adds “ ( ” after a function is entered, it will
be more convenient for your use.
(4) Operator: The description of each operator is as follows:
Descriptions
Arithmetic operators: add, subtract, multiply, divide.
Parenthesis, it is used to increase the
operation priority within parenthesis.
Relational operators: less than, greater than, less
than or equal to, greater than or equal to, equal,
not equal to.
Logical operators: or, and.
Functions
+, -, *, /
( )
<, >, <=,
>=, ==, !=
||, &&
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8.1 Waveform Display Setting
You can set the waveform display type, display format, duration, grid brightness,
waveform brightness, and color temperature.
Display Type:
Press DISPLAY type to select vector or point display.
(1) Vector: This mode provides the most realistic waveforms in most cases,
allowing users to easily view the steep edges of the waveforms (such as
square waves).
(2) Point: Displays the sampling points directly.
Display Format:
Press DISPLAY format to select YT, XY 1&2, XY 3&4.
(1) YT: Displays voltage value on time scale (horizontal scale).
(2) XY 1&2: Displays the Lissajous figure of CH1~CH2 waveforms, you can
easily measure the phase difference between the two signals of the same
frequency.
(3) XY 3&4: Displays the Lissajous figure of CH3~CH4 waveforms, you can
easily measure the phase difference between the two signals of the same
frequency. (Only for 4-channel models).
Chapter 8 Display System Settings
Grid Brightness:
Press DISPLAY grid brightness, and adjust the Multipurpose knob or
shuttle knob to set the grid brightness.
Waveform Brightness:
Press DISPLAY waveform brightness, and adjust the Multipurpose knob
or shuttle knob to set the waveform brightness.
Persist:
Press DISPLAY persist to select MIN, 50ms, 100ms, 200ms, 500ms,
1s, 2s, 5s, 10s, 20s or infinite.
Color Temperature:
Press DISPLAY PgDn color temperature, select on and it will
directly reflect the probability of waveform signal occurrence. A waveform
with a high frequency of occurrence is displayed in warm colors, and a
waveform with a low frequency of occurrence is displayed in cool color.
Inverse Color Temperature:
Press DISPLAY PgDn inverse color temperature and select on,
this function is opposite to the color temperature function.
Note: The inverse color temperature is available only when the color
temperature is set to on.
8.2 XY Mode
The waveform displayed in XY mode is also called the Lissajous figure.
When XY 1&2 are selected, the CH1 signal is input on the horizontal axis
(X axis), and the CH2 signal is input on the vertical axis (Y axis).
When XY 3&4 are selected, the CH3 signal is input on the horizontal axis
(X axis), and the CH4 signal is input on the vertical axis (Y axis). Only
4-channel models have this function.
In X-Y mode, when CH1 or CH3 is activated, use the horizontal POSITION
knob to move the XY figure in the horizontal direction. When CH2 or CH4
is activated, use the vertical POSITION knob to move the XY figure in the
vertical direction.
43
Adjust the vertical SCALE knob to change the amplitude of each channel,
and adjust the horizontal SCALE knob to change the time base to get a better
display effect of the Lissajous figures. The waveform in XY mode is shown
in the following figure:
Picture 7-1 Waveform display in XY mode
8.3 Application of XY Mode
The Lissajous method makes it easy to observe the phase difference between
two signals
of the same frequency. The following figure shows the observation of phase
difference.
According to sinθ = A/B or C/D, θ is the phase difference angle between
channels, and the definition of A, B and C, D are shown above, it can be
calculated that the phase difference angle θ = ± arcsin (A/B) or θ = ± arcsin
(C/D). If the main axis of the ellipse is in the quadrants I, III, then the
calculated phase difference angle should be in the quadrants I, IV, i.e. within
(0~π/2) or (3π/2~2π); If the main axis of the ellipse is in the quadrants II,
IV, then the calculated phase difference angle should be within (π/2~π)
or (π~3π/2).
In addition, if the frequency or phase difference of the two detected signals
is an integer, the frequency and the phase relationship between the two
signals can be calculated according to the pattern in the following chart:
44
Chapter 9 Automatic Measurement
9.1 Parameter Measurement
UPO3000E series oscilloscope can automatically measure 34 kinds of
parameters.
Voltage:
Vmax: Voltage value from the highest point to GND.
Vmin: Voltage value from the lowest point to GND.
Vtop: Voltage value from the flat top to GND.
Vbase: Voltage value from the bottom to GND.
Middle: (Vtop + Vbase) / 2
Vpp: Vmax – Vmin
Vamp: Vtop – Vbase
Mean: Average amplitude of the waveform on screen
CycMean: Average amplitude of the waveform in one period
RMS: The effective value. According to the energy produced by the AC
signal in the conversion, the equivalent energy that the DC voltage
corresponds to.
CycRMS: The RMS of one period.
Time:
Period: Time between two consecutive, same-polarity edges of a repetitive
waveform.
Frequency: The reciprocal of the period
Rise time: Time needed for waveform amplitude rising from 10% to 90%.
Fall time: Time needed for waveform amplitude falling from 90% to 10%.
+Width: The width of a positive pulse at 50% amplitude
-Width: The width of a negative pulse at 50% amplitude
FRR: Time between the first rising edge of source 1 to the first rising edge
of source 2
FRF: Time between the first rising edge of source 1 to the first falling edge
of source 2
FFR: Time between the first falling edge of source 1 to the first rising edge
of source 2
FFF: Time between the first falling edge of source 1 to the first falling edge
of source 2
LRF: Time between the last rising edge of source 1 to the last falling edge
of source 2
LRR: Time between the last rising edge of source 1 to the last rising edge
of source 2
LFR: Time between the last falling edge of source 1 to the last rising edge
of source 2
LFF: Time between the last falling edge of source 1 to the last falling edge
of source 2
45
Others:
+Duty: Ratio of positive pulse width to period.
-Duty: Ratio of negative pulse width to period.
OverSht: (Vmax - Vtop) / Vamp
PreSht: (Vmin - Vbase) / Vamp
Area: Algebraic sum of the voltage and time product of all points on the screen.
CycArea: The area of one period.
Phase: The phase difference between the master source and the slave source.
9.2 Automatic Measurement Menu
Press the MEASURE button on the front panel to enter the automatic
measurement menu.
Automatic Measurement Menu (page 1)
Descriptions
Select any of CH1, CH2, CH3, CH4, MATH
for automatic parameter measurement
Close all parameters
Pops up a dialog box of all parameters
on the waveform display area
A user-defined parameter selection interface
pops up on the waveform display area, adjust
the Multipurpose knob to select and press the
knob to confirm to show the parameter on
the screen.
Press the user defined key again to close
the user-defined parameter dialog box.
Options
Ch1, CH2,
CH3, CH4,
MATH
Off
On
Functions
Signal Source
All Parameters
User Defined
Close this function.
Automatic calculates and displays the
current user defined parameters of the
average, maximum, and minimum.
Only applicable when user defined
parameters are present.
Automatic calculates and displays the
current user defined parameters of the
average, standard deviation, and
measurement times.
Only applicable when user defined
parameters are present.
Select the slave source that requires
two channels for measurement.
Off
Peak
Difference
Ch1, CH2,
CH3, CH4,
MATH
Measurement
Statistical
Analysis
Slave source
Automatic Measurement Menu (page 2)
Descriptions
Adjust the Multipurpose knob to select
the parameter indicated by the indicator
among the 34 parameters of automatic
measurement.
Close indicator.
Open parameter indicator.
Clear all user defined parameters.
Options
Off
On
Functions
Indicator
Selection
Indicator
Clear
46
9.3 All Parameters Measurement
Press MEASURE all parameters, select on to measure 34 parameters
at one time, as shown below:
Measured parameters color are consistent with the current channel (source).
When "----" is shown, it indicates that the current source has no signal input,
or the measurement result is not valid (too large or too small).
9.4 User Defined Parameters
Press MEASURE user defined, the user-defined parameter selection
interface is displayed. As shown below:
Select the parameters by adjusting the Multipurpose knob, and press the
knob to confirm. For every selected parameter, a * symbol will appear in front
of the parameter.
Press the user defined F3 key to close the user defined parameter
selection menu and the parameters will be displayed at the bottom of the
screen. For convenience and immediate view of the automatic measurement
results of these parameters, up to 5 parameters can be defined at the same
time.
Users can also choose to open the measurement statistical function with
the F4 key, as shown below:
47
Chapter 10 Cursor Measurement
The cursor can be used to measure the X axis value (time) and the Y axis
value (voltage) of the selected waveform. Press the CURSOR button to
enter the cursor measurement menu.
10.1 Time Measurement
Press the CURSOR key to enter the cursor measurement menu, then press
type to select time; press source to select the channel to be measured; press
mode to select independent (default). As shown in the figure below:
The upper left corner of the display area shows the cursor measurement
information:
“X” indicates the time measurement, “Y” indicates the voltage measurement.
Time:
The Multipurpose knob can adjust the vertical cursor AX, press the Multipurpose
knob to switch to cursor BX, the adjustment method of cursor BX is the same
as AX.
BX-AX: The time measurement.
1/|BX-AX|: The reciprocal of time, or frequency.
For a periodic signal, if the AX and BX are set at the same position on the
rising edge of two adjacent cycles, then BX-AX is the period of the signal,
and 1/|BX-AX| is the frequency of the signal.
Voltage:
Indicates the waveform voltage value of the current cursor position, that is,
AY, BY, and BY-AY.
Press mode to select tracking, adjust the Multipurpose knob and the cursor
AX and BX will move simultaneously.
10.2 Voltage Measurement
The method for voltage measurement is similar to the method for time
measurement, only that the vertical cursor becomes the horizontal cursor.
Press the CURSOR key to enter the cursor measurement menu, then press
type to select amplitude; press source to select the channel to be measured;
press mode to select independent (default). As shown in the figure below:
48
The Multipurpose knob can be used to adjust the horizontal cursor AY on the
screen, press the Multipurpose knob to switch to cursor BY, the adjustment
method of cursor BY is the same as AY.
Press mode to select tracking, adjust the Multipurpose knob and the cursor
AY and BY will move simultaneously.
The upper left corner of the display area shows the cursor measurement
information: AY, BY: Voltage values represented by the current positions of
cursor AY and BY. BY - AY: Voltage difference between two cursors.
Chapter 11 Storage and Load
With the storage function, you can save the oscilloscope's settings, waveforms,
and screen images to the oscilloscope or external USB storage devices, and
load the saved settings or waveforms anytime. Press the STORAGE key to
enter the storage function setting interface.
Note: For the external USB storage device, only supports FAT format, the
NTFS format is not compatible.
11.1 Setting Storage and Load
Press STORAGE type, select setting to enter the setting storage menu.
Setting Storage Menu
Descriptions
Press save to save the settings to the
oscilloscope.
Press save to save the settings to an
external USB storage device.
Filename can be chosen with the Multipurpose
knob. Names can be chosen from set001,
set002, …., set255
Saves settings to a specified storage location.
Loads the previously saved settings in the specified
memory location to return the oscilloscope to
the previously saved setting state.
Options
Setting
DSO
USB
Functions
Type
Disk
Filename
Save
Load
11.2 Waveform Storage and Load
Press STORAGE type, select waveform to enter the waveform storage
menu.
Waveform Storage Menu
Functions
Options
Descriptions
Set which channel waveform to be saved.
Waveform
DSO
USB
CH3, CH4
Press save to save the waveforms to
the oscilloscope.
Press save to save the waveforms to
an external USB storage device.
When save is pressed, the waveform will be
saved to an external USB storage device in .
csv format. This format can be opened on the
PC directly through software such as Excel.
Filename can be chosen with the Multipurpose
knob. Names can be chosen from wav001,
wav002, …., wav255
Saves waveforms to a specified storage location.
USB CSV
Type
Source
Disk
Filename
Save
After the waveform is saved, you can select the REF key on the vertical
control area to enter the REF waveform load menu.
49
REF Waveform Load Menu
Descriptions
Select any of the four references to
load waveforms.
Press load to recall the waveform from
the oscilloscope.
Press load to recall the waveform from
the external USB storage device
Filename to be loaded can be chosen with
the Multipurpose knob. Names can be chosen
from wav001, wav002, …., wav255 and must
be consistent with saved name
Loads the previously saved waveform and
displays it on screen
Close current REF waveform
Options
Ref-A,
Ref-B,
Ref-C,
Ref-D.
DSO
USB
Functions
Reference
Disk
Filename
Load
Clear
The loaded REF waveform is shown below:
Ref waveform status display
After loading, the Ref waveform status will be displayed in the lower left
corner, including time base scale and amplitude scale. At this point you
can use the vertical and horizontal control knob to adjust the Ref
wavform’s position on the screen, the time base scale, and the amplitude
scale.
Remark:
Only when the oscilloscope is connected to an external USB storage
device such as a USB flash drive can you select the disk as USB, and
then save the settings to the USB storage device. When the USB storage
device is not connected, it will prompt “USB device is not inserted”.
When loading, the disk and file name must be set to match the one
previously saved, if the settings have not been saved to the selected
location before, it will prompt ”Load Failed”.
11.3 Print Screen
The PrtSc key can be used to store the current screen in BMP format to an
external USB storage device. The bitmap can be opened directly on the PC.
This function can only be used when external USB storage device is connected.
50
Chapter 12 Auxiliary Function Settings
Press the UTILITY key to enter the auxiliary function settings menu.
12.1 System Function Settings
Self-correcting:
Self-correcting allows the oscilloscope to work optimally to obtain the most
accurate measurements. You can perform this function at any time, especially
when the ambient temperature range reaches or exceeds 5℃. Before
performing the self-correcting operation, make sure that the oscilloscope is
operating for more than 20 minutes.
Press UTILITY self-correcting and a warning dialog box pops up: “Please
confirm that no signal is connected to any channel”. After confirming, press
OK to start self-correcting, it takes about 5mins.
System Information:
Press UTILITY system information to view the oscilloscope’s model number,
software and hardware version number.
Language：
Press UTILITY language to select simplified Chinese or English.
Menu Display:
The time of the menu display. You can press to show or hide the menu.
Press UTILITY menu display, you can select 1s, 2s, 5s, 10s, 20s, or
manual by adjusting the Multipurpose knob.
Square Wave Output:
Press UTILITY PgDn square wave output to set the square wave
output frequency: 10Hz, 100Hz, 1kHz, 10kHz.
Frequency meter:
Press UTILITY PgDn frequency meter, select on and
will be displayed at the top of the screen.
The frequency meter is the counter of trigger event frequency in the trigger
channel, it is valid when trigger type is edge or pulse width.
AUX Output Selection:
Press UTILITY PgDn output selection to select trigger or Pass/Fail.
Trigger: AUX output terminal outputs the trigger synchronization signal.
Pass/Fail: AUX outputs the pass/fail signal.
Backlight Brightness:
Press UTILITY PgDn backlight brightness, and adjust the brightness
of the screen by the Multipurpose knob.
Clear Data:
Press UTILITY PgDn backlight brightness F1 to clear the data
stored in the device.
Network Settings:
Connect the device with a valid network cable, then press UTILITY
PgDn IP to enter the IP setting interface.
IP Type:
Press the type key to switch the IP access mode: manual or automatic.
IP Address:
The format of the IP address is nnn.nnn.nnn.nnn, the range of the first nnn
is from 1 to 223, the range of the other three nnn is from 0 to 255. It is
recommended that you consult your network administrator for an available
IP address.
Press IP address to enter the IP address setting menu. When the access
mode is manual, set the IP address by adjusting the Multipurpose knob.
When the access mode is automatic, you can only view the IP address.
51
Subnet Mask:
The format of the subnet mask is nnn.nnn.nnn.nnn, the nnn range is from 0
to 255. It is recommended that you consult your network administrator for
an available subnet mask.
Press subnet mask to enter the subnet mask setting menu. When the access
mode is manual, set the subnet mask by adjusting the Multipurpose knob.
When the access mode is automatic, you can only view the subnet mask.
RTC Setting:
Press UTILITY PgDn RTC setting to enter the date and time setting
menu. Adjust the digits by Multipurpose knob, after the first digit is adjusted,
press the Multipurpose knob and the cursor will jump to the second digit, the
adjustment method is similar to the first digit, the latter digit and so on. After
all adjustments, press OK to save the settings.
12.2 Waveform Recording
Press UTILITY waveform recording to enter its menu.
Setting:
Press record operation, select setting to make parameter settings for waveform
recording. You can also press REC SET to quickly enter the recording setting
interface.
Recording Interval:
Set the interval between each frame of the waveform recording.
Press the recording interval key and adjust the Multipurpose knob (shuttle
knob or numeric keypad) to set.
End Frame:
Press the end frame key and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set that the waveform recording will automatically stop
recording when it reaches this frame.
Playback Delay:
Set the interval time between each frame during the waveform playback.
Press playback delay, and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set.
Max Frame Size:
Displays the maximum number of frames that can be recorded in the current
situation (The maximum number of frames varies based on the current
memory depth).
Operate:
Press recording operation, select operate to enter the operation interface.
Record:
Press record to start recording. You can also press directly to start
recording.
Stop:
Press stop to stop the waveform recording. You can also press to stop
recording.
Play:
Press play and the waveform starts playing back, you can also press
directly to start playback, press this button again to pause. Adjust the
Multipurpose knob (shuttle knob or numeric keypad) to jump to the specified
number of frames.
52
12.3 Pass/Fail
The Pass/Fail uses a template to detect whether the input signal satisfies
the template requirements. If the input signal exceeds the limited range of
the template, it is judged as failed.
(1) Function Introduction
Press UTILITY PgDn pass/fail to enter its menu.
Enable:
Press enable, select on to make the relevant settings for the Pass/Fail.
Output:
Press output to select fail or pass.
(1) Fail: Set the AUX interface on the back panel of the oscilloscope to output
pulses when “fail” and produce beeps.
(2) Pass: Set the AUX interface on the back panel of the oscilloscope to
output pulses when “pass” and produce beeps.
Note: AUX output selection needs to be switched to Pass/Fail.
Source:
Press source, select CH1, CH2, CH3, or CH4 to set the test source of Pass/Fail.
Message:
Press message, select on and the test result statistics will be displayed at
the upper left
corner of the screen, as shown below:
Total_wfs means the total number of frames tested; Pass_wfs means the
number of frames passed; Fail_wfs means the number of frames failed.
Stop Setting:
Press PgDn stop setting to enter its menu as follows:
Descriptions
Set the Pass/Fail function to stop the test
automatically after it reaches the specified
threshold value of pass
Set the Pass/Fail function to stop the test
automatically after it reaches the specified
threshold value of failure
Set the stop condition
Use the Multipurpose knob to set the
stop condition threshold
Returns to previous menu, the Pass/Fail menu
Options
Pass Count
Fail Count
>=, <=
Functions
Stop Type
Condition
Threshold
Return
Template Setting:
Press PgDn template setting to enter its menu. As shown below:
Descriptions
Select a channel waveform in CH1~CH4 and
plus the horizontal and vertical tolerance as
the conditions for creating a template
Use the Multipurpose knob to select the
horizontal tolerance
Use the Multipurpose knob to select
the vertical tolerance
Creates a template with above conditions
Returns to previous menu, the Pass/Fail menu
Operate:
After the above settings are completed, press the operate key and select
on, the device will start recording the waveforms.
Options
Ch1, CH2,
CH3, CH4
1 ~ 255
1 ~ 255
Functions
Reference
Waveform
Horizontal
Tolerance
Vertical
Tolerance
Create
Template
Return
53
Note: After selecting the enable as on, you need to set the stop settings and
template settings before you can perform the Pass/Fail function. Otherwise
it will prompt "Function is Disabled".
(2) Application Example
Input the 1kHz, 3V square wave to CH1, and observe the results under the
specified Pass/Fail conditions.
① Enter Pass/Fail menu: Press UTILITY PgDn Pass/Fail.
② Set Enable: Press the enable key and select on.
③ Set output condition: Press the output key and select fail.
④ Set source: Press the source key and set the source to CH1.
⑤ Open message: Press the message key and select on.
Stop setting: Press the stop setting key to enter the stop setting menu;
set the stop type to fail times and adjust the Multipurpose knob to set the
threshold to 10; then press F5 to return to the Pass/Fail menu.
⑥ Template setting: Press the template setting key to enter the menu; press
reference waveform and select CH1; press the horizontal tolerance key
and adjust the Multipurpose knob to set the horizontal tolerance to 10
and the vertical tolerance to 5; then press the create template key. Press
the back key to return to the Pass/Fail menu.
⑦ Start test: Press PgDn operate and select on to start the test. See
figure below:
The Pass/Fail function will run continuously, and stop once 10 fail tests have
been reached, or the user manually suspends the test (when operate is set
to off).
12.4 System Upgrade
This series oscilloscope can use U disk to upgrade the software to give users
a more convenient and flexible experience. To use this feature, please follow
the following steps:
① Press UTILITY to enter the auxiliary function menu, then press system
nformation to view the machine's model number, software and hardware I
version information.
② Download the upgrade file from the UNI-T website or get it from the UNI-T
distributor. The upgrade file is consistent with the model and hardware
version of the device, and the software version is higher than the original
version. Please save the upgrade file in the root directory of the U disk.
③ When the device is in the off state, insert the U disk and turn it on, after
entering the upgrade interface, press F1 to confirm the upgrade.
④ The upgrade process takes about 5mins. After the upgrade, shut down
the device and unplug the USB flash disk.
⑤ Turn on the device to check whether the system information is the same
as the provided version information, the same indicates that the upgrade
was successful.
Note: please make sure that the power supply is on throughout the upgrade
process in order to avoid the incomplete upgrade. If the system is not completely
upgraded, it might not be able to restart.
Chapter 13 Additional Function Keys
13.1 Auto Setting
Function
CH1
Vertical Displacement
Coupling
Bandwidth Limitation
VOLTS/DIV
Probe
Invert
Automatic settings will according to the input signal, choose appropriate time base scales, amplitude scales, and triggering parameters so that the waveform
automatically properly displays on the screen. Press the AUTO key to enable automatic settings.
Automatic setting applies only to the following conditions:
① Automatic setting is suitable for setting up simple single frequency signals, and not for complex combination waves.
② The measured signal frequency is not less than 10Hz, the amplitude is not less than 20mVpp, and the square wave duty cycle is more than 5%.
③ The automatic setting is only for the open channels and not for the closed channels.
13.2 Run / Stop
Use the RUN/STOP key on the front panel for control. When the key is pressed and the green light is on, it indicates the RUN state, and if the red light is
on after the key press, it is the STOP state. In the running state, the oscilloscope is continuously acquiring waveforms and the upper part of the screen shows
“AUTO”; in the stop state, the oscilloscope stops the acquisition and the upper part of the screen shows “STOP”. Press the RUN/STOP key to switch the
waveform sampling between the run and stop states.
13.3 Clear
Press the CLEAR button on the front panel of the oscilloscope to clear the loaded REF waveform on the screen.
13.4 Factory Setting
By pressing the DEFAULT button, you can quickly restore to factory settings. UPO3000E series oscilloscope factory settings are as below:
Factory Setting
1V/DIV
0 (vertical midpoint)
DC
Off
Coarse tuning
1×
Off
System
Vertical System
54
55
Horizontal Time Base
Horizontal Displacement
Hold-off Time
Trigger Type
Source
Slope Type
Coupling Mode
Trigger Mode
Type
Format
Duration
Grid Brightness
Waveform Brightness
Storage Type
Frequency Meter
Measurement
Cursor
Language
Menu Display
Square Wave Output
Backlight Brightness
Output Selection
Bias Voltage
CH2, CH3, CH4
MATH, REF
Extended Window
Off
Off
Off
Off
1μs/div
0 (Horizontal midpoint)
100.00ns
Edge
CH1
Rising
DC
Automatic
Vector
YT
50ms
40%
40%
Waveform
Off
Off, clear all measurements
Off
Keep the settings that saved at shutdown
Manual
1kHz
30%
Keep the settings that saved at shutdown
Vertical System
Horizontal System
Trigger System
Display
Other System
Chapter 14 System Prompts and Troubleshooting
14.1 System Prompt Information Description
Operation at limit: In the current state, adjustment has reached the limit and
cannot continue. When the vertical scale knob, time base knob, level shift,
vertical shift or trigger level, etc. reaches the adjustment limit, the prompt
will show up.
USB device is not inserted: When the USB storage device is not connected,
this prompt appears if you select a storage disk as USB.
Load Failed: When loading a saved setting or waveform, this prompt appears
if there is no stored setting or waveform in the memory location.
14.2 Trouble Shooting
(1) When the power button is pressed and the oscilloscope is black
screen:
① Check the power supply connection and check power supply is normal
or not.
② Make sure the power switch at the back of the oscilloscope is open, press
the front panel power key and confirm green light is present.
③ If there is a relay sound, it indicates that the oscilloscope starts normally.
Try the following operations: press the DEFAULT key, then press F1 , if
device returns to normal, it means backlight brightness is too low.
④ After completing the above steps, restart the oscilloscope.
⑤ If you still cannot use this product normally, please contact UNI-T and
let us serve you.
(2) After signal acquisition, waveform does not appear on display:
① Check if the probe is connected to the signal test point.
② Check if the signal line is connected to the analog channel input.
③ Check the analog channel of the input signal and that channel is open.
④ Connect the probe to the probe compensation signal connector on
oscilloscope's front panel and check whether the probe is normal.
⑤ Check to see if there is a signal to be detected (solve the problem by
comparing the channel with signal generated and the one with problem).
Press AUTO button for signal re-acquisition.
(3) The measured voltage amplitude value is 10 times larger or smaller
than the actual value:
Make sure the probe attenuation coefficient in the channel matches the
attenuation of the probe used.
(4) There is a waveform but not stable:
① Check the trigger source in the trigger menu and confirm that it matches
the input channel of the actual signal.
② Check the trigger type: normal signals should use edge trigger mode.
Stable waveform will be displayed only by setting to the correct trigger
mode.
③ Try changing the trigger coupling to high frequency suppression or low
frequency suppression in order to filter out the high or low frequency
noise which might interfere the trigger.
(5) Pressing the RUN/STOP key and no waveform is displayed:
① Check whether the trigger mode is normal or single, and whether the
trigger level has exceeded the waveform range. If so, center the trigger
level or set the trigger mode to auto with the AUTO key.
② Press the AUTO key to complete the above settings automatically.
6
(6) Waveform refresh rate is too slow:
① Check whether the acquisition mode is average, and the average times
is large.
② You can speed up the refresh rate by reducing the average times or
select other acquisition mode such as normal sampling.
56
Chapter 15 Technical Index
Aside from specification labeled "typical", all specifications are guaranteed.
Unless otherwise stated, all technical specifications are applicable to probes with attenuation 10X and UPS3000CS series oscilloscope. Oscilloscope must
first meet the following two conditions in order to achieve these standards:
The instrument must be operated at the specified operating temperature for more than thirty minutes.
If the operating temperature range reaches or exceeds 5 degree Celsius, user must turn on the system function menu to perform self-correcting.
Input
Input Coupling
Input Impedance
Probe Attenuation Coefficient
Maximum Input Voltage
DC, AC, GND
1MΩ±2% // 18pF ±3pF
0.001×, 0.01×, 0.1×, 1×, 10×, 100×, 1000×
CATI 300 Vrms, CATII 100 Vrms, Transient Overvoltage 1000 Vpk
Vertical
Model
Analog Bandwidth
Rise Time (Typical)
Channels
Vertical Resolution
Vertical Scale
UPO3152E
150MHz
≤2.4ns
2 2
UPO3252E
250MHz
≤1.4ns
UPO3154E
150MHz
≤2.4ns
UPO3254E
250MHz
≤1.4ns
4
4
8bit
1mV/div ~ 20V/div (1-2-5 base)
1mV/div ~ 50 mV/div: ±2V; 100 mV/div ~ 1 V/div: ±40V; 2V/div ~ 20 V/div: ±400V
Vertical Displacement Range
Bandwidth Limit (Typical)
20MHz
57
Low Frequency Response
(AC coupling, -3dB)
DC Gain Accuracy
DC Offset Accuracy
Channel Isolation
≤5 Hz ( on BNC )
≤±3% (Sampling or average sampling method)
≤±3% (Sampling or average sampling method)
DC to maximum bandwidth: >40 dB
Horizontal
Timing Scale
Timing Accuracy
Delay Range
Time Base Mode
Waveform Capture Rate
2ns/div ~ 40s/div (1-2-4 base)
≤±(50+ 2×Service Life)ppm
Pre-trigger (negative delay) : ≥1 screen width; Post-trigger (positive delay) : 1s~50s
YT, XY, ROLL
200,000 wfms/s
Sampling
Sampling Mode
Real-time Sampling Rate
Acquisition Mode
Average Value
Waveform Interpolation
Memory Depth
Real-time sampling
2.5GS/s (single channel), 1.25GS/s (dual channel), 1.25GS/s (quad channel)
Sampling, peak detection, high resolution, envelope, and average
After all channels have reached N samples at the same time, the
between 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 and 8192.
number of N can be selected
sin(x) / x
Auto, 7kpts, 70kpts, 700kpts, 7Mpts, 70Mpts optional
58
Trigger
Trigger Level Range
Trigger Mode
Trigger Hold-off Range
High Frequency Suppression
Low Frequency Suppression
Noise Suppression
Trigger Sensitivity
Internal: Center of the screen ±8 grids; External: ±1.8V; EXT/S:±9V
Automatic, normal, single
80ns ~ 10s
80kHz
8kHz
Reduces waveform noise (10 mV/div ~ 20 V/div, the sensitivity of DC coupling trigger is reduced 2 times)
≤1div
Edge Trigger
Edge Type
Rising, falling, any
Pulse Width Trigger
Pulse Width Condition
Polarity
Pulse Width Range
>, <, =
Positive, negative pulse width
3.2ns ~ 10s
Runt Trigger
Pulse Width Condition
Polarity
Pulse Width Range
>, <, =
Positive, negative polarity
6.4ns ~ 10s
59
Window Trigger
Window Type
Trigger Position
Window time
Rising edge, falling edge, any edge
Window enter, exit, time
6.4ns ~ 10s
N-Edge Trigger
Edge Type
Idle Time
Number of Edges
Rising edge, falling edge
6.4ns ~ 10s
1 ~ 65535
Rising edge, falling edge
Greater than, less than, within range, out of range
Normal:6.4ns~10s; Lower time limit:6.4ns 10s; Upper time limit:28.8ns 10s~ ~
Delay Trigger
Edge Type
Delay Type
Delay time
Timeout Trigger
Edge Type
Timeout
Rising edge,falling edge,any edge
6.4ns 10s~
Duration Trigger
Code
Trigger Condition
Duration Time
H L X, ,
Greater than less than within range, ,
Normal:6.4ns 10s; Lower time limit:6.4ns 10s; Upper time limit:28.8ns 10s~ ~ ~
60
Setup/Hold Trigger
Edge Type
Data Type
Setup Time
Hold Time
Rising edge, falling edge
H, L
6.4ns~10s
6.4ns~10s
Slope Trigger
Slope Condition
Time Setting
Positive slope (greater than, less than, specified range)
Negative slope (greater than, less than, specified range)
6.4ns~10s
Video Trigger
Signal System
Frequency Range
Horizontal Scanning
Supports standard NTSC, PAL and SECAM broadcast system with line numbers ranging
from 1~525 ( NTSC ) and 1~625 ( PAL/SECAM ).
Code Trigger
Code Setting H, L, X, rising edge, falling edge
RS232 Decode (Optional)
Trigger Condition
Baud Rate
Data byte width
Start of frame, error frame, parity error, data
2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps, 115200bps, user-defined
5 bits, 6 bits, 7 bits, 8 bits
61
I2C Decode (Optional)
Trigger Condition
Address byte Width
Address Range
Byte Size
Data Qualifier
Start, restart, stop, lost acknowledgment , address, data, address/data
7 bits, 10 bits
0 to 119, 0 to 1023
1bit to 5bits
Equal to, greater than, less than
SPI Decode (Optional)
Trigger Condition
Idle Time
Data bit size
Data Setting
Clock Edge
Chip select, timeout
80ns~1s
4 bits to 32 bits
H, L, X
Rising edge, falling edge
USB Decode (Optional)
Signal Speed
Trigger Condition
Low speed, full speed
Synchronization, reset, pause, restore, packet tail, token packet, data packet, handshake packet, SOF, error.
CAN Decode (Optional)
Signal Type
Trigger Condition
Signal Rate
Rx/Tx, CAN_H, CAN_L, Difference
Frame start, frame type, ID, data, ACK missing, bit stuffing error, ID and data, frame end
10kbps, 20kbps, 33.3kbps, 50kbps, 62.5kbps, 83.3kbps, 100kbps, 125kbps, 1Mbps, user-defined
62
Sampling Point
Frame Type
1% to 99%
Data frame, remote frame, error frame and overload frame
Voltage difference between cursors (△V)
Time difference between cursors (△T)
The reciprocal of △T (Hz) (1/△T)
Voltage and time at waveform point
Allows cursor display during automatic measurement
Manual
Tracking Mode
Indicator
Maximum minimum peak-to-peak median top bottom amplitude period average average
periodic RMS RMS overshoot preshoot frequency period rise time fall time positive pulse
width negative pulse width rise delay fall delay FRR FRF FFR FFF LRF LRR LFR LFF
positive duty ratio negative duty ratio phase area cycle area.
, , , , , , , , ,
, , , , , , , ,
, , , , , , , , , , , ,
, , , ,
Displays 5 measurements at the same time
Screen or cursor
Average, maximum, minimum, standard deviation and the number of measurements
6-bit hardware frequency meter
Measure
Cursor
Automatic Measurement
Number of Measurement
Measurement Range
Measurement Statistics
Frequency Meter
Mathematical Operations
Waveform Calculation
FFT Window Type
FFT Display
FFT Vertical Scale
A+B, A-B, A×B, A/B, FFT, logic operation, digital filtering, advanced operation
Rectangle, Hanning, Blackman, Hamming
Split screen; time base can be adjusted independently
Vrms, dBVrms
63
Digital Filter
Logic Operation
Advanced Operation
Low-pass, high-pass, band-pass and band-stop
AND, OR, NOT, XOR
Log, Exp, Sin, Cos, Tan, Sqrt, Inth, Diff
Storage
Setting
Waveform
Bitmap
Internal (256), external USB storage device
Internal (256), external USB storage device
External USB storage device, it can also store the relevant parameter information.
Display
Display Type
Display Resolution
Display Color
Duration
Menu Duration
Display Type
8-inch TFT LCD
800 horizontal×RGB×480 vertical pixels
Minimum, 50ms, 100ms, 200ms, 500ms, 1s, 2s, 5s, 10s, 20s and infinite.
1s, 2s, 5s, 10s, 20s, manual
Point, vector
Interface
Standard/Optional Interface
Standard: USB-Host, USB-Device, LAN, VGA, EXT Trig, AUX Out
Optional: Signal source output interface (WaveGen), multimeter module (UT-M12)
64
2
24
General Technical Specifications
Probe Compensation Signal Output
Output Voltage
Frequency
About 3Vp-p
10Hz, 100Hz 1kHz (default) 10kHz, ,
Power Supply
Power Supply Voltage
Frequency
Fuse
100V ~ 240VACrms
45Hz 440Hz ~
2.5A, T 250V,
Operational: 0℃~+40℃; Non-Operational: -20℃~ +60℃
Fan forced cooling
Operational: below +35 ≤90％relative humidity; Non-Operational: +35 +40 ≤60％relative humidity℃ ℃~ ℃
Operational: below 3000m; Non-Operational: below 15,000m
Environment
Temperature Range
Cooling Method
Humidity Range
Altitude
Mechanical Specifications
Size
Weight
370mm(W)×195mm(H)×125mm(D)
4.2kg
Calibration Interval
Recommend to perform calibration once a year
65
Chapter 16 Accessories
Appendix A Accessories and Options
(2) Clean
Refer to the operating conditions of the instrument and probe and perform
frequent checks. Clean the outer surface of the instrument according to
the following steps:
● Please use a soft cloth to wipe the dust off the instrument and the
probes. When cleaning the LCD screen, please pay attention and
protect the transparent LCD screen.
All accessories (standard accessories and optional items), please
order from the local UNI-T dealers.
Appendix B Maintenance and Cleaning
(1 General Maintenance)
Do not store or place the instrument in places where the LCD monitor
will be exposed to direct sunlight for a long time. Caution: Do not allow
sprays, liquids and solvents to be stained on the instrument or probe to
prevent damage.
● Please disconnect the power supply, then with a damp but not
dripping soft cloth, wipe the instrument. Do not use any abrasive
chemical cleaning agent on the instrument or probes.
Warning: Please confirm that the instrument is completely
dry before use, to avoid electrical shorts or even personal
injury caused by moisture.
Appendix C Warranty Overview
UNI-T (UNI-TREND TECHNOLOGY (CHINA) CO., LTD.) ensures the
production and sale of products, from authorized dealer's delivery date
of three years, without any defects in materials and workmanship. If the
product is proven to be defective within this period, UNI-T will repair or
replace the product in accordance with the detailed provisions of the
warranty.
To arrange for repair or acquire warranty form, please contact the nearest
UNI-T sales and repair department.
In addition to permit provided by this summary or other applicable insurance
guarantee, UNI-T does not provide any other explicit or implied guarantee,
including but not limited to the product trading and special purpose for
any implied warranties. In any case, UNI-T does not bear any responsibility
for indirect, special, or consequential loss.
Appendix D Contact Us
If the use of this product has caused any inconvenience, you can contact
UNI-TREND TECHNOLOGY (CHINA) CO., LTD. directly in mainland China.
Products from regions outside of China, please contact your local UNI-T
dealer or sales
center.
Service support: Many UNI-T products have the option of extending the
warranty and calibration period, please contact your local UNI-T dealer
or sales center.
66
UPO3152E UPO3154E (150MHz)/
UPO3252E UPO3254E (250MHz)/
Power cord that complies with the country's standard
USB data cable (UT-D14)
2 4 passive probes (200MHz/300MHz)/
Quick guide
CD-ROM (including user manual and
application software)
Model
Number
Standard
Accessories
67
