BNC P4025T User manual

Model P4025T
200MHz Digital Storage Oscilloscope
With Touchscreen
User Manual

Nov. 2018 edition V1.2.1
Copyright © Berkeley Nucleonics Corporation. All rights reserved.
The Berkeley Nucleonics products are under the protection of the patent rights, including ones which
have already obtained the patent rights and those which are applied for. The information in this manual
will replace all materials published.
The information in this manual was correct at the time of printing. However, Berkeley Nucleonics will
continue to improve products and reserves the rights to change specification at any time without notice.
BNC is the registered trademark of Berkeley Nucleonics.
Berkeley Nucleonics Corporation
2955 Kerner Blvd, San Rafael CA 94901
Phone: [phone], Fax: [phone]
Web: www.berkeleynucleonics.com

General Warranty
BERKELEY NUCLEONICS warrants that the product will be free from defects in materials
and workmanship for a period of 3 years from the date of purchase of the product by the
original purchaser from the BERKELEY NUCLEONICS Company. The warranty period of
accessories such as probe, battery, adapter is 12 months. This warranty only applies to the
original purchaser and is not transferable to the third party.
If the product proves defective during the warranty period, BERKELEY NUCLEONICS either
will repair the defective product without charge for parts and labor or will provide a
replacement in exchange for the defective product. Parts, modules and replacement
products used by BERKELEY NUCLEONICS for warranty work may be new or reconditioned
like new performance. All replaced parts, modules and products become the property of
BERKELEY NUCLEONICS.
In order to obtain service under this warranty, Customer must notify BERKELEY
NUCLEONICS of the defect before the expiration of the warranty period. Customer shall be
responsible for packaging and shipping the defective product to the service center
designated by BERKELEY NUCLEONICS, and with a copy of customer proof of purchase.
This warranty shall not apply to any defect, failure or damage caused by improper use
or improper or inadequate maintenance and care. BERKELEY NUCLEONICS shall not be
obligated to furnish service under this warranty a) to repair damage resulting from
attempts by personnel other than BERKELEY NUCLEONICS representatives to install,
repair or service the product; b) to repair damage resulting from improper use or
connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-BERKELEY NUCLEONICS supplies; or d) to service a product
that has been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing the product.

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Table of Contents
1. General Safety Requirements.......................................................................................... 1
2. Safety Terms and Symbols............................................................................................... 2
3. Junior User Guidebook................................................................................................... 4
Introduction to the Structure of the Oscilloscope..................................................................... 5
Front Panel ...............................................................................................................................................5
Rear Panel ................................................................................................................................................6
Control Area.............................................................................................................................................7
User Interface Introduction........................................................................................................8
How to Implement the General Inspection.............................................................................10
How to Implement the Function Inspection............................................................................10
How to Implement the Probe Compensation.......................................................................... 11
How to Set the Probe Attenuation Coefficient........................................................................ 12
How to Use the Probe Safely.....................................................................................................13
How to Implement Self-calibration..........................................................................................13
Introduction to the Vertical System......................................................................................... 14
Introduction to the Horizontal System.................................................................................... 15
Introduction to the Trigger System .........................................................................................16
Touchscreen Controls (Touchscreen is optional) ................................................................... 16
4. Advanced User Guidebook............................................................................................ 22
How to Set the Vertical System................................................................................................23
Use Mathematical Manipulation Function .............................................................................25
Waveform math....................................................................................................................................26
User defined function.............................................................................................................................27
Digital Filter...........................................................................................................................................27
Using FFT function................................................................................................................................28
Use Vertical Position and Scale Knobs....................................................................................30
How to Set the Horizontal System ...........................................................................................31
Waveform Horizontal Zooming.............................................................................................................31
Magnifier (For specific models).............................................................................................................32
How to Set the Trigger/Decoding System................................................................................33
Single Trigger.........................................................................................................................................34
Logic Trigger..........................................................................................................................................43
Bus Trigger.............................................................................................................................................44
Bus Decoding (Optional)........................................................................................................................49
How to Operate the Function Menu........................................................................................54
How to Implement Sampling Setup .......................................................................................................54
How to Set the Display System..............................................................................................................56

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How to Save and Recall a Waveform.....................................................................................................59
How to Record/Playback Waveforms ....................................................................................................66
How to Clone and Recall a waveform....................................................................................................69
How to Implement the Auxiliary System Function Setting....................................................................74
How to Update your Instrument Firmware.............................................................................................78
How to Measure Automatically..............................................................................................................80
How to Measure with Cursors................................................................................................................84
How to Use Autoscale............................................................................................................................87
How to Use Built-in Help.......................................................................................................................89
How to Use Executive Buttons...............................................................................................................89
How to Print the Screen Image...............................................................................................................91
5. Use theArbitrary Function Generator (Optional to specific models) ............................... 92
Output Connection....................................................................................................................92
To Set Channels.........................................................................................................................92
To Set Signals.............................................................................................................................93
To Output Sine Signals...........................................................................................................................93
To Set the Frequency...........................................................................................................................................93
To Set the Period..................................................................................................................................................94
To Set the Start Phase ..........................................................................................................................................94
To Set the Amplitude ...........................................................................................................................................94
To Set the Offset..................................................................................................................................................95
To Set the High Level..........................................................................................................................................95
To Set the Low Level...........................................................................................................................................95
To Output Square Signals.......................................................................................................................95
To Output Ramp Signals........................................................................................................................95
To Set the Symmetry of Ramp.............................................................................................................................95
To Output Pulse Signals.........................................................................................................................95
To Set the Pulse Width of Pulse...........................................................................................................................95
To Set the Duty Cycle of Pulse............................................................................................................................95
To Output Arbitrary Signals...................................................................................................................95
Create a New Waveform......................................................................................................................................96
File Browse..........................................................................................................................................................97
Built-in Waveform...............................................................................................................................................97
Frequency Response Analysis ..................................................................................................99
6. Use the Multimeter (Optional).................................................................................... 101
Input Terminals.......................................................................................................................101
DMM Menu..............................................................................................................................101
DMM Information Window ................................................................................................... 102
Making Multimeter Measurements.......................................................................................103
Measuring AC or DC Current ..............................................................................................................103
Measuring AC or DC Voltage..............................................................................................................103
Measuring Resistance...........................................................................................................................104
Testing Diodes......................................................................................................................................104

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Testing for Continuity..........................................................................................................................104
Measuring Capacitance ........................................................................................................................104
Multimeter Features................................................................................................................104
Data Hold Mode...................................................................................................................................104
Making Relative Measurements...........................................................................................................105
Information Display .............................................................................................................................105
Auto or Manual Range .........................................................................................................................105
Multimeter Recorder...............................................................................................................105
7. Communication with PC............................................................................................. 108
Using USB Port........................................................................................................................108
Using LAN Port.......................................................................................................................109
Connect directly ...................................................................................................................................109
Connect through a router......................................................................................................................110
Using Wi-Fi to Connect with PC (Optional)......................................................................... 112
Connect with PC as Wi-Fi Access Point..............................................................................................112
Connect with PC as Wi-Fi Station........................................................................................................113
8.CommunicationwithAndroidDeviceviaWi-Fi(Optional)......................................................116
How to Connect ....................................................................................................................... 116
Connect with APP as Wi-Fi Access Point............................................................................................116
Connect with APP as Wi-Fi Station.....................................................................................................118
User Interface.......................................................................................................................................120
Gestures Control...................................................................................................................................122
9. Demonstration ............................................................................................................. 124
Example 1: Measurement a Simple Signal............................................................................ 124
Example 2: Gain of a Amplifier in a Metering Circuit........................................................ 125
Example 3: Capturing a Single Signal................................................................................... 126
Example 4: Analyze the Details of a Signal........................................................................... 127
Example 5: Application of X-Y Function..............................................................................129
Example 6: Video Signal Trigger........................................................................................... 131
10. Troubleshooting......................................................................................................... 132
11. Technical Specifications............................................................................................ 133
Oscilloscope..............................................................................................................................133
Trigger..................................................................................................................................................137
Waveform Generator..............................................................................................................138
Multimeter ...............................................................................................................................139
General Technical Specifications........................................................................................... 139
12. Appendix .................................................................................................................... 141
Appendix A: Enclosure........................................................................................................... 141

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Appendix B: General Care and Cleaning .............................................................................141
Appendix C: Battery Using Guide.........................................................................................142

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1. General Safety Requirements
Before use, please read the following safety precautions to avoid any possible bodily
injury and to prevent this product or any other connected products from damage. In
orderto avoid any contingent danger, ensure this product is only used within the range
specified.
Only the qualified technicians can implement the maintenance.
To avoid Fire or Personal Injury:
Connect the probe correctly. The grounding end of the probe corresponds to the
grounding phase. Please don't connect the grounding end to the positive phase.
Use Proper Power Cord. Use only the power cord supplied with the product and
certified to use in your country.
Connect or Disconnect Correctly. When the probe or test lead is connected to a
voltage source, please do not connect and disconnect the probe or test lead at random.
Product Grounded. This instrument is grounded through the power cord grounding
conductor. To avoid electric shock, the grounding conductor must be grounded. The
product must be grounded properly before any connection with its input or output
terminal.
When powered byAC power, itis not allowed tomeasureAC powersource directly,
because the testing ground and power cord ground conductor are connected
together, otherwise, it will cause short circuit.
When powered by battery, the product must ground connection. To avoid electric
shock, there must be a ground wire connect between ground and the ground port
(on the back of product panel).
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and
markers of this product. Refer to the user's manual for more information about ratings
before connecting to the instrument.
Do not operate without covers. Do not operate the instrument with covers or panels
removed.
Use Proper Fuse. Use only the specified type and rating fuse for this instrument.
Avoid exposed circuit. Do not touch exposed junctions and components when the
instrument is powered.
Do not operate if in any doubt. If you suspect damage occurs to the instrument, have
it inspected by qualified service personnel before further operations.
Use your Oscilloscope in a well-ventilated area. Make sure the instrument installed
with proper ventilation, refer to the user manual for more details.
Do not operate in wet conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.

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2. Safety Terms and Symbols
Safety Terms
Terms in this manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in injury
or loss of life.
Caution: Caution indicates the conditions or practices that could result in damage
to this product or other property.
Terms on the product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the product. The following symbol may appear on the product:
Hazardous Voltage Refer to Manual
Protective Earth Terminal Chassis Ground
Test Ground
To avoid body damage and prevent product and connected equipment damage, carefully
read the following safety information before using the test tool. This product can only be
used in the specified applications.
Warning:
The four channels of the oscilloscope are not electrically isolated. The channels should
adopt a common ground during measuring. To prevent short circuits, the 2 probe
grounds must not be connected to 2 different non-isolated DC levels.

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The diagram of the oscilloscope ground wire connection:
The diagram of the ground wire connection when the battery-powered oscilloscope is
connected to the AC-powered PC through the ports:
It is not allowed to measureAC power when the oscilloscope is AC powered, or when
the battery-powered oscilloscope is connected to theAC-powered PC through theports.
Warning:
To avoid fire or electrical shock
, when the oscilloscope input signal
connected
is more than
42V peak (30Vrms) or on circuits of more than
4800VA
, please take note of below items:
Only use accessory insulated voltage probes and test lead.
Check the accessories such as probe before use and replace it if
there are any damages.
Remove probes, test leads and other accessories immediately after
use.
Remove USB cable which connects oscilloscope and computer.
Do not apply input voltages above the rating of the instrument
because the probe tip voltage will directly transmit to the
oscilloscope. Use with caution when the probe is set as 1:1.
Do not use exposed metal BNC or banana plug connectors.
Do not insert metal objects into connectors.
Ground Clip
Signal Input
Oscilloscope Electrical Outlet
Probe
Power Cord
Ground Clip
Signal Input
Oscilloscope
(Battery-power)
PC Electrical Outlet
Probe
USB/VGA/COM/
LAN Cable

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3. Junior User Guidebook
This chapter deals with the following topics mainly:
Introduction to the structure of the oscilloscope
Introduction to the user interface
How to implement a general inspection
How to implement a functional inspection
How to make a probe compensation
How to set the probe attenuation coefficient
How to use the probe safely
How to implement a self-calibration
Introduction to the vertical system
Introduction to the horizontal system
Introduction to the trigger system
Touchscreen Controls (Touchscreen is optional)

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Introduction to the Structure of the Oscilloscope
This chapter makes a simple description of the operation and function of the front panel of
the oscilloscope, enabling you to be familiar with the use of the oscilloscope in the shortest
time.
Front Panel
The front panel has knobs and function buttons. The 5 buttons in the column on the right
side of the display screen or in the row under the display screen are menu selection buttons,
through which, you can set the different options for the current menu. The other buttons are
function buttons, through which, you can enter different function menus or obtain a specific
function application directly.
Figure 3-1 Front panel
1. Display area
2. Select the right menu item
3. Control (button and knob) area
4. Probe Compensation: Measurement signal (3.3V/1kHz) output.
5. Input connectors of four channels
6. Remove the left and right menu
7. Select the bottom menu item
8. Copy button: You can save the waveform by just pressing this button in any user
10
3
5 4
98
1
6
2
7

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interface.
9. USB Host port: It is used to transfer data when external USB equipment connects to
the oscilloscope regarded as "host device". For example: Saving the waveform to USB
flash disk needs to use this port.
10. Power on/off
Rear Panel
Figure 3-2 Rear Panel
1. Handle
2. Air vents
3. Input terminals of multimeter (optional)
4. AC power input jack
5. Fuse
6. Foot stool: Adjust the tilt angle of the oscilloscope.
7. VGA port: To connect the oscilloscope with a monitor or a projector as VGA output
(optional).
8. LAN port: the network port which can be used to connect with PC.
9. USB Device port: It is used to transfer data when external USB equipment connects to
the oscilloscope regarded as "slave device". For example: to use this port when connect
PC to the oscilloscope by USB.
10.Lock Hole: You can lock the oscilloscope to a fixed location using the security lock
(please buy it yourself) to secure the oscilloscope.
11.Trig Out(P/F) port: Trigger signal output or Pass/Fail output, also can be used as the
port of CH2 Output of optional dual-channel waveform generator. The output type can
be set on the menu (Utility menu→Output→Output).
12.Out 1 port: Output (single-channel) or CH1 Output (dual-channel) of optional waveform
generator.
3
10 987
12
11
1 2
6
4
5

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Control Area
Figure 3-3 Control Area Overview
1. Function button area: Total 11 buttons
2. Waveform generator controls (optional)
or
DAQ: Multimeter Recorder (see "Multimeter Recorder" on P105)
P/F: Pass/Fail (see "Pass/Fail" on P76)
W.REC: Waveform Record (see "How to Record/Playback Waveforms" on P66)
3. Trigger control area with 2 buttons and 1 knob.
The Trigger Level knob is to adjust trigger voltage. Other 2 buttons refer to trigger
system setting.
4. Horizontal control area with 1 button and 2 knobs.
"HOR" button refer to horizontal system setting menu, "Horizontal Position" knob
control trigger position, "Horizontal Scale" control time base.
5. Vertical control area with 5 buttons and 2 knobs.
CH1 - CH4 buttons correspond to setting menu in CH1 - CH4. "Math" button provides
access to math waveform functions (+, -, ×, /, FFT, user function, digital filter). The
"Vertical Position" knob control thevertical position of current channel, and the "Scale"
knob control voltage scale of current channel.
6. Default: Call out the factory settings.
Print: Print an image of what appears on the instrument screen.
Decode(optional): Turn on/off Decode function.
DMM (Multimeter, optional) or Snap (Shortcut button for measurement snapshot)
7. Direction key:Move the cursor of the focused parameter.
8. Mknob (Multipurpose knob): when a symbol appears on the menu, it indicates
you can turn the M knob to select the menu or set the value. You can push it to close the
1
2
3
8
7
54
6

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menu on the left and right.
User Interface Introduction
Figure 3-4 Illustrative Drawing of Display Interfaces
1. Waveform DisplayArea.
2. Run/Stop (touchable on touchscreen) (see "How to Use Executive Buttons" on P89)
3. The state of trigger, including:
Auto: Automatic mode and acquire waveform without triggering.
Trig: Trigger detected and acquire waveform.
Ready: Pre-triggered data captured and ready for a trigger.
Scan: Capture and display the waveform continuously.
Stop: Data acquisition stopped.
4. Click to auto set (only for touchscreen).
5. The two blue dotted lines indicates the vertical position of cursor measurement.
6. The pointer indicates the trigger position in the record length.
7. The T pointer indicates the horizontal position for the trigger.
8. It shows present triggering value and displays the site of present window in internal
memory.
9. Touchable icon is to enable ( ) or disable ( ) the touchscreen controls (only
for touchscreen).

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10. It shows setting time (see "Config" on P74).
11. Wi-Fi is activated.
12. It indicates that there is a USB disk connecting with the oscilloscope.
13. Indicating battery power status (see "Display" on P75).
14. Multimeter window.
15. The waveform of CH1.
16. The pointer shows the trigger level position of the source in trigger menu.
17. The two blue dotted lines indicate the horizontal position of cursor measurement.
18. The waveform of CH2.
19. The waveform of CH3.
20. The waveform of CH4.
21. The frequency of the trigger signal.
22. The icon shows the selected trigger type, e.g. represents triggering on the
rising edge for an Edge trigger. The reading shows the trigger level value of the
corresponding channel.
23. Click to show/hide the touchable shortcut menu (only for touchscreen).
24. It indicates the measured type and value of the corresponding channel. "T" means
period, "F" means frequency, "V" means the average value, "Vp" the peak-peak
value, "Vr" the root-mean-square value, "Ma" the maximum amplitude value,
"Mi" the minimum amplitude value, "Vt" the Voltage value of the waveform's flat
top value, "Vb" the Voltage value of the waveform's flat base, "Va" the amplitude
value, "Os" the overshoot value, "Ps" the Preshoot value, "RT" the rise time value,
"FT" the fall time value, "PW" the +width value, "NW" the -Width value, "+D"
the +Duty value, "-D" the -Duty value, "PD" the Delay A->B value, "ND" the
Delay A->B value, "TR" the Cycle RMS, "CR" the Cursor RMS, "WP" the
Screen Duty, "RP" the Phase A->B , "FP" the Phase A->B , "+PC" the +Pulse
count, "-PC" the - Pulse count, "+E" the Rise edge count, "-E" the Fall edge count,
"AR" the Area, "CA" the Cycle area.
25. The readings show the record length.
26. The readings show current sample rate.
27. The readings indicate the corresponding Voltage Division of the channels.
"BW" indicates bandwidth limit.
The icon shows the coupling mode of the channel.
"—" indicates direct current coupling
"～" indicates AC coupling
" " indicates GND coupling
28. The reading shows the setting of main time base.
29. The green pointer indicates the grounding datum point (zero point position) of the
waveform of the CH1 channel.
30. The orange pointer indicates the grounding datum point (zero point position) of the
waveform of the CH1 channel.
31. It is cursor measure window, showing the absolute values and the readings of the

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cursors.
32. The blue pointer indicates the grounding datum point (zero point position) of the
waveform of the CH1 channel.
33. The yellow pointer indicates the grounding datum point (zero point position) of the
waveform of the CH1 channel.
How to Implement the General Inspection
After you get a new oscilloscope, it is recommended that you should make a check on
the instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied accessories have been already described in the "Appendix A: Enclosure" of
this Manual. You can check whether there is any loss of accessories with reference to
this description. If it is found that there is any accessory lost or damaged, please get in
touch with the distributor of BNC responsible for this service or the BNC's local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the instrument
can not work normally, or fails in the performance test, please get in touch with the
BNC's distributor responsible for this business or the BNC's local offices. If there is
damage to the instrument caused by the transportation, please keep the package. With
the transportation department or the BNC's distributor responsible for this business
informed about it, a repairing or replacement of the instrument will be arranged by the
BNC.
How to Implement the Function Inspection
Make a fast function check to verify the normal operation of the instrument, according
to the following steps:
1. Connect the power cord to a power source. Long press the button on the
bottom left of the instrument.
The instrument carries out all self-check items and shows the Boot Logo. Push the
Utility button, select Function in the bottom menu. Select Adjust in the left menu,
select Default in the bottom menu. The default attenuation coefficient set value of the
probe on the menu is 10X.
2. Set the Switch in the Oscilloscope Probe as 10X and Connect the Oscilloscope with

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CH1 Channel.
Align the slot in the probe with the plug in the CH1 connector BNC, and then tighten
the probe with rotating it to the right side.
Connect the probe tip and the ground clamp to the connector of the probe compensator.
3. Push the Autoset Button on the front panel.
The square wave of 1 KHz frequency and 3.3V peak-peak value will be displayed in
several seconds (see Figure 3-5).
Figure 3-5 Auto set
Check CH2, CH3 and CH4 by repeating Step 2 and Step 3.
How to Implement the Probe Compensation
When connect the probe with any input channel for the first time, make this adjustment
to match the probe with the input channel. The probe which is not compensated or
presents a compensation deviation will result in the measuring error or mistake. For
adjusting the probe compensation, please carry out the following steps:
1. Set the attenuation coefficient of the probe on the menu as 10X and that of the
switch in the probe as 10X (see "How to Set the Probe Attenuation Coefficient" on
P12), and connect the probe with the CH1 channel. If a probe hook tip is used,
ensure that it keeps in close touch with the probe. Connect the probe tip with the
signal connector of the probe compensator and connect the reference wire clamp
with the ground wire connector of the probe connector, and then push the Autoset
button on the front panel.
2. Check the displayed waveforms and regulate the probe till a correct compensation
is achieved (see Figure 3-6 and Figure 3-7).

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Overcompensated Compensated correctly Under compensated
Figure 3-6 Displayed Waveforms of the Probe Compensation
3. Repeat the steps mentioned if needed.
Figure 3-7 Adjust Probe
How to Set the Probe Attenuation Coefficient
The probe has several attenuation coefficients, which will influence the vertical scale
factor of the oscilloscope.
To change or check the probe attenuation coefficient on the menu of oscilloscope:
(1) Push the function menu button of the used channels (CH1 - CH4 button).
(2) Select Probe in the bottom menu; select Attenu in the right menu, turn the Mknob
to select the proper value corresponding to the probe.
This setting will be valid all the time before it is changed again.
Caution:
The default attenuation coefficient of the probe on the instrument is preset
to 10X.
Make sure that the set value of the attenuation switch in the probe is the
same as the menu selection of the probe attenuation coefficient
in the
oscilloscope.
The set values of the probe switch are 1X and 10X (see Figure 3-8).

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Figure 3-8 Attenuation Switch
Caution:
When the attenuation switch is set to 1X, the probe will limit the bandwidth
of the oscilloscope in 5MHz. To use the full bandwidth of the oscilloscope,
the switch must be set to 10X.
Identify the Probe Attenuation Coefficient Automatically
The oscilloscope can identify the probe attenuation coefficient of the 100:1 (impedance
5K±20%) or 10:1 (impedance 10K±20%) probe with the identifying pin. When you
attach the probe, the oscilloscope set the attenuation automatically on the oscilloscope
vertical menu for the channel to match the probe.
For example, if you attach a 10:1 probe with the identifying pin, the screen will prompt
"The probe attenuation factor is X10", and set the attenuation to 10X automatically on
the oscilloscope vertical menu for the channel.
How to Use the Probe Safely
The safety guard ring around the probe body protects your finger against any electric
shock, shown as Figure 3-9.
Figure 3-9 Finger Guard
Warning:
To avoid electric shock, always
keep your finger behind the safety guard
ring of the probe during the operation.
To protect you from suffering from the electric shock, do not touch any metal
part of the probe tip when it is connected to the power supply.
Before making any measurements, always
connect the probe to the
instrument and connect the ground terminal to the earth.
How to Implement Self-calibration
The self-calibration application can make the oscilloscope reach the optimum condition
rapidly to obtain the most accurate measurement value. You can carry out this
application program at any time. This program must be executed whenever the change