multicomp pro MP Dual Channel Series User manual

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MP Four-Channel Series Tablet Oscilloscopes
User Manual
Models MP720645, MP720775 and MP720776

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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
Side Panel ................................................................................................................................6
Top Panel .................................................................................................................................7
User Interface Introduction..........................................................................................7
How to Implement the General Inspection ...................................................................9
How to Implement the Function Inspection ................................................................10
How to Implement the Probe Compensation..............................................................10
How to Set the Probe Attenuation Coefficient ............................................................11
How to Use the Probe Safely ....................................................................................12
How to Implement Self-calibration.............................................................................13
Introduction to the Vertical System............................................................................13
Introduction to the Horizontal System........................................................................14
Introduction to the Trigger System.............................................................................15
Touchscreen Controls...............................................................................................16
4. Advanced User Guidebook.................................................................................. 22
How to Set the Vertical System.................................................................................23
How to Set the Horizontal System.............................................................................25
Waveform Horizontal Zooming ...............................................................................................26
Magnifier（For specific models）...........................................................................................26
How to Operate the Function Menu...........................................................................28
Set the Trigger/Decoding System ...........................................................................................28
Single Trigger............................................................................................................................................ 29
Logic Trigger.............................................................................................................................................. 37
Bus Trigger................................................................................................................................................ 38
Bus Decoding............................................................................................................................................ 44
Implement Sampling Setup.....................................................................................................49
Implement the Auxiliary System Function Setting...................................................................51
Set the Display System...........................................................................................................53
Save and Recall a Waveform .................................................................................................56
Record/Playback Waveforms..................................................................................................63
Clone and Recall a waveform.................................................................................................67
Update your Instrument Firmware...........................................................................................70
Measure Automatically............................................................................................................72
Customize an Automatic Measurement..................................................................................76
Measure with Cursors.............................................................................................................77
Use Mathematical Manipulation Function...............................................................................80
Waveform math......................................................................................................................................... 81
User defined function................................................................................................................................ 82
Digital Filter................................................................................................................................................ 82
Use Autoscale function...........................................................................................................83
Use HOR function...................................................................................................................84

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Use FFT function ....................................................................................................................85
Use XY Format.......................................................................................................................91
Use Pass/Fail function............................................................................................................92
Use Executive Buttons............................................................................................................94
Print the Screen Image...........................................................................................................95
5. Communication with PC....................................................................................... 97
Using USB Port ........................................................................................................97
Using LAN Port.........................................................................................................98
Connect directly......................................................................................................................98
Connect through a router......................................................................................................100
Using Wi-Fi to Connect with PC ..............................................................................102
Connect with PC as Wi-Fi Access Point ...............................................................................102
Connect with PC as Wi-Fi Station.........................................................................................103
6. Communication with Android Device via Wi-Fi (Optional) ...............................106
How to Connect......................................................................................................106
Connect with APP as Wi-Fi Access Point.............................................................................106
Connect with APP as Wi-Fi Station.......................................................................................108
User Interface.........................................................................................................110
Gestures Control.....................................................................................................112
7. Demonstration.....................................................................................................113
Example 1: Measurement a Simple Signal...............................................................113
Example 2: Gain of a Amplifier in a Metering Circuit.................................................114
Example 3: Capturing a Single Signal......................................................................115
Example 4: Analyze the Details of a Signal..............................................................117
Example 5: Application of X-Y Function...................................................................118
Example 6: Video Signal Trigger.............................................................................120
8. Troubleshooting..................................................................................................121
9. Technical Specifications.....................................................................................122
Oscilloscope...........................................................................................................122
Trigger....................................................................................................................125
General Technical Specifications.............................................................................127
10. Appendix...........................................................................................................128
Appendix A: Enclosure............................................................................................128
Appendix B: General Care and Cleaning.................................................................129
Appendix C: Battery Using Guide............................................................................130

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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 order to 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.
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.
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:
Ground Clip
Signal Input
Electrical Outlet
Probe Oscilloscope AC Adapter
The diagram of the ground wire connection when the battery-powered
oscilloscope is connected to the AC-powered PC through the ports:
Ground Clip
Signal Input
Oscilloscope
(Battery-power) PC Electrical OutletProbe
USB/LAN Cable
It is not allowed to measure AC power when the oscilloscope is AC powered,
or when the battery-powered oscilloscope is connected to the AC-powered
PC through the ports.
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.

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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 the general inspection
How to implement the function inspection
How to make a probe compensation
How to set the probe attenuation coefficient
How to use the probe safely
How to implement an self-calibration
Introduction to the vertical system
Introduction to the horizontal system
Introduction to the trigger system
Touchscreen Controls

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Introduction to the Structure of the Oscilloscope
This chapter makes a simple description of the operation and function 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. Through the function buttons, you
can enter different function menus or obtain a specific function application directly.
10
1 3
4
7
12 11
9
6
2
5
8
Figure 3-1 Front panel
1. LCD touchscreen
2. CH1 - CH4 buttons: Access to setting menu of CH1 - CH4.
3. Power button: Power on/off
4. The upper knob:
When one of the CH1 - CH4 buttons is lighted, this knob is used to adjust the
vertical position of current channel,
When HOR button is lighted, this knob is used to adjust the horizontal
positions of all channels (including mathematical operations).
When Trigger button is lighted, this knob is used to adjust trigger level.
5. HOR button: When the button light is off, press to light on, the upper and lower
knob are for horizontal system. Press to switch between the normal mode and

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the waveform zooming mode.
6. Trigger button: Accesses to trigger system setting. When the button light is on,
the upper knob is used to adjust trigger level of current channel.
7. The lower knob:
When one of the CH1 - CH4 buttons is lighted, this knob is used to adjust the
voltage scale of current channel.
When HOR button is lighted, this knob is used to adjust time base.
8. Copy button: You can save the waveform by just pushing this button in any
user interface. The source wave and the storage location are set in the Save
menu when the Type is Wave ( → Save).
9. Default button: Press this button, a prompt will show, press again to execute
the factory settings.
10. Autoset button: Quick way to apply a set of pre-set functions to the incoming
signal, and display the best possible viewing waveform of the signal.
11. Single button: Set the trigger mode as single directly.
12. Run/Stop button: Enable or disable sampling on input signals.
Side Panel
1
2
3
4
5
6
Figure 3-2 Side Panel
1. Probe Compensation: Measurement signal (5V/1kHz) output.
2. Trig Out or Pass/Fail output connector: Trigger signal output or Pass/Fail
output. The output type can be set on the menu ( → Utility → Function →
Output → Output).
3. 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.

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4. 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.
5. LAN port: the network port which can be used to connect with PC.
6. Connector for the DC power source via an AC-DC adapter
Top Panel
Input connectors of four channels
Figure 3-3 Top Panel
User Interface Introduction
139
21
15
29
26
6810 12
16
13
17
22
24
30
32
711
27
245
25
14
5
20
31
18
19
23
28
Figure 3-4 Illustrative Drawing of Display Interfaces
1. Waveform Display Area.
2. Run/Stop (touchable) (see "Use Executive Buttons" on P97)
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. Click the