multicomp pro MP720645 User Manual
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multicomp pro MP720645 User Manual

Four-channel tablet oscilloscopes
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MP720645 Four-Channel Series
Tablet Oscilloscopes
User Manual
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  • Page 1 MP720645 Four-Channel Series Tablet Oscilloscopes User Manual...

  • Page 2: Table Of Contents

    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 ....................
  • Page 3 Use Mathematical Manipulation Function ................79 Waveform math ..............................80 User defined function ............................81 Digital Filter................................81 Use Autoscale function ......................82 Use HOR function ........................83 Use FFT function ........................84 Use XY Format ........................90 Use Pass/Fail function ......................91 Use Executive Buttons ......................

  • Page 4: General Safety Requirements

    Multicomp-Pro user Manual 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.

  • Page 5: Safety Terms And Symbols

    Multicomp-Pro user Manual 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.
  • Page 6 Multicomp-Pro user Manual short circuits, the 2 probe grounds must not be connected to 2 different non-isolated DC levels. The diagram of the oscilloscope ground wire connection: Oscilloscope AC Adapter Probe Electrical Outlet Signal Input Ground Clip The diagram of the ground wire connection when the battery-powered oscilloscope is connected to the AC-powered PC through the ports: Oscilloscope Probe...

  • Page 7: Junior User Guidebook

    Multicomp-Pro user Manual 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...

  • Page 8: Introduction To The Structure Of The Oscilloscope

    Multicomp-Pro user Manual 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.

  • Page 9: Side Panel

    Multicomp-Pro user Manual 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.

  • Page 10: Top Panel

    Multicomp-Pro user Manual 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...
  • Page 11 Multicomp-Pro user Manual Scan: Capture and display the waveform continuously. Stop: Data acquisition stopped. 4. Click to auto set. 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.

  • Page 12: How To Implement The General Inspection

    Multicomp-Pro user Manual 23. The readings show the record length. 24. The readings show current sample rate. 25. The readings indicate the corresponding Voltage Division of the channels. "BW" indicates bandwidth limit. The icon shows the coupling mode of the channel. "—"...

  • Page 13: How To Implement The Function Inspection

    Multicomp-Pro user Manual will be arranged by us. 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. Long press the button on the top right of the instrument. The instrument carries out all self-check items and shows the Boot Logo.

  • Page 14: How To Set The Probe Attenuation Coefficient

    Multicomp-Pro user Manual 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"...

  • Page 15: How To Use The Probe Safely

    Multicomp-Pro user Manual 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.

  • Page 16: How To Implement Self-Calibration

    Multicomp-Pro user Manual 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 of ambient temperature is 5℃...

  • Page 17: Introduction To The Horizontal System

    Multicomp-Pro user Manual Measuring Skill If the channel is under the DC coupling mode, you can rapidly measure the DC component of the signal through the observation of the difference between the wave form and the signal ground. If the channel is under the AC mode, the DC component would be filtered out. This mode helps you display the AC component of the signal with a higher sensitivity.

  • Page 18: Introduction To The Trigger System

    Multicomp-Pro user Manual found that the Horizontal Time Base displayed in the status bar changes accordingly. 3. When the HOR button is lit, use the upper knob to adjust the horizontal position of the signal in the waveform window. The upper knob is used to control the triggering displacement of the signal or for other special applications.

  • Page 19: Touchscreen Controls

    Multicomp-Pro user Manual Touchscreen Controls You can control the oscilloscope by different gestures. The touchable icon at the top right of the screen is used to enable ( ) or disable ( ) the touchscreen controls. The instruction of touchscreen controls is as below. ...
  • Page 20 Multicomp-Pro user Manual When OFF is shown, click to turn on the function, and enter the menu. When ON is shown and unselected, click to enter the menu, click again to turn off.  Set the channel status: Click the channel on the left bottom of the display area, you can turn on, select or turn off the channel.
  • Page 21 Multicomp-Pro user Manual When the P icon appears, in the full screen, swipe left/right to control the horizontal position, swipe up/down to control the vertical position of the selected channel. Control the horizontal position Control the vertical position of the selected channel Click the P icon to fine-turn, long-press to adjust continuously.
  • Page 22 Multicomp-Pro user Manual  Set the time base and the voltage division Click in the area as shown in the figure below, the M and V icons will appear. Click anywhere outside the icon to hide it. Note: Swipe up/down or left/right in this area, you can make the icon appear and control it.
  • Page 23 Multicomp-Pro user Manual Cursor line Unselected Selected Switch horizontal or vertical lines If vertical lines are selected, drag up and down. When the C icon appears, in the full screen, swipe left/right to move the selected line. Click the direction buttons of the C icon to fine-turn, long-press to move continuously.

  • Page 24: Advanced User Guidebook

    Multicomp-Pro user Manual 4. Advanced User Guidebook Up till now, you have already been familiar with the basic operations of the function areas, buttons and knobs in the front panel of the oscilloscope. Based the introduction of the previous Chapter, the user should have an initial knowledge of the determination of the change of the oscilloscope setting through observing the status bar.

  • Page 25: How To Set The Vertical System

    Multicomp-Pro user Manual How to Set the Vertical System The VERTICAL CONTROLS include four menu buttons such as CH1, CH2, CH3, CH4, and two knobs such as the upper knob, the lower knob. Setting of CH1 - CH4 Each channel has an independent vertical menu and each item is set respectively based on the channel.
  • Page 26 Multicomp-Pro user Manual (2) Select Coupling in the bottom menu. (3) Select DC in the right menu. Both DC and AC components of the signal are passed. (4) Select AC in the right menu. The direct current component of the signal is blocked.

  • Page 27: How To Set The Horizontal System

    Multicomp-Pro user Manual (3) Select Full band in the right menu. The high frequency of the signal will be allowed to pass. (4) Select 20M in the right menu. The bandwidth is limited to 20 MHz. The frequencies above 20MHz will be rejected. Use the upper knob and the lower knob If you want to set the vertical position and vertical scale of a channel, press CH1, CH2, CH3 or CH4 at first to select the desired channel, then turn the upper knob to...

  • Page 28: Waveform Horizontal Zooming

    Multicomp-Pro user Manual changes with the time base.  The lower knob: When the HOR button is lit, adjust the horizontal scale of waveform.  Horizontal HOR key: Switch between the normal mode and the waveform zooming mode. When the magnifier is turned off, the waveform is magnified in the horizontal direction;...
  • Page 29 Multicomp-Pro user Manual (3) Turn the lower knob to adjust the horizontal magnification. The horizontal time base of the magnifier window also changes. (4) Select Ratio from the bottom menu, select the vertical magnification in the left menu. The voltage scale of the magnifier window will also change accordingly. (5) Select Window from the bottom menu.

  • Page 30: How To Operate The Function Menu

    Multicomp-Pro user Manual selection to make the selection more recognizable. Magnifier Window Cursor Measurement When the magnifier function is on: 1. Click to call up the menu panel. 2. Click the Cursor softkey on panel to switch to the ON state. 3.

  • Page 31: Single Trigger

    Multicomp-Pro user Manual Trigger Control The oscilloscope provides three trigger types: single trigger, logic trigger and bus trigger. Each type of trigger has different sub menus. Click to call up the menu panel, click Tig Menu, select the first menu item in the bottom menu, select Single, Logic or Bus Trigger in the right menu, choose different trigger types in the left menu.
  • Page 32 Multicomp-Pro user Manual 1. Edge Trigger An edge trigger occurs on trigger level value of the specified edge of input signal. Select Edge trigger mode to trigger on rising edge or falling edge. In Edge Trigger mode, the trigger setting information is displayed on bottom right of the screen, for example, , indicates that trigger type is edge, trigger source is CH1, coupling is DC, and trigger level is 0.00mV.
  • Page 33 Multicomp-Pro user Manual Video, trigger source is CH1, and Sync type is Even. Video Trigger menu list: Menu Setting Instruction Single Video Set vertical channel trigger type as video trigger Select CH1 as the trigger source Select CH2 as the trigger source Source Select CH3 as the trigger source Select CH4 as the trigger source...
  • Page 34 Multicomp-Pro user Manual Polarity Choose the polarity when Select pulse width condition and click to set time, click to move cursor to choose which digit to be set. Auto Acquire waveform even no trigger occurred Normal Acquire waveform when trigger occurred When trigger occurs, acquire one waveform then Mode Single...
  • Page 35 Multicomp-Pro user Manual High level Click to set the High level upper limit. Threshold Low level Click to set Low level lower limit. &SlewRate Slew rate Slew rate = (High level - Low level) / Settings Auto Acquire waveform even no trigger occurred Normal Acquire waveform when trigger occurred Single...
  • Page 36 Multicomp-Pro user Manual Positive Polarity, the oscilloscope triggers on the Polarity positive runt pulse. Negative Polarity, the oscilloscope triggers on the negative runt pulse. Click to set pulse width, click move cursor to choose which digit to be set. Condition Trigger when runt pulse is greater than the set pulse width.
  • Page 37 Multicomp-Pro user Manual Positive Polarity, the oscilloscope triggers on the Polarity positive Windows pulse. Negative Polarity, the oscilloscope triggers on the negative Windows pulse. Enter: Triggers when the trigger signal enters the specified trigger level range. Condition Exit: Triggers when the trigger signal exits the specified trigger level range.
  • Page 38 Multicomp-Pro user Manual Edge Start timing when the rising edge of the input signal passes through the trigger level. Edge Start timing when the falling edge of the input signal passes through the trigger level. Set idle time. Idle time means the minimum time of idle clock before searching data that can meet Configure Idle Time...

  • Page 39: Logic Trigger

    Multicomp-Pro user Manual Nth Edge Trigger menu list: Menu Setting Instruction Set vertical channel trigger type as Nth Edge Single Nth Edge trigger. Select CH1 as the trigger source Select CH2 as the trigger source Source Select CH3 as the trigger source Select CH4 as the trigger source Edge Trigger on the rising edge of the input signal when...

  • Page 40: Bus Trigger

    Multicomp-Pro user Manual Set logic mode as AND. Logic Set logic mode as OR. Mode XNOR Set logic mode as XNOR. Set logic mode as XOR. Set CH1 as High Level, Low level, high or low level, Rise and Fall. Set CH2 as High Level, Low level, high or low level, Rise and Fall.
  • Page 41 Multicomp-Pro user Manual trigger type is UART, CH1 trigger level is 0.00mV. Format as shown in the figure below, UART Trigger UART Trigger menu list: Menu Setting Instruction Set vertical channel bus type as UART Bus Type UART trigger. Select CH1 as the trigger source. Select CH2 as the trigger source.
  • Page 42 Multicomp-Pro user Manual baud, ranges from 50 to 10,000,000. Parity: Select Odd or Even. Common Baud: click in the left menu to Chk Error choose common baud. Custom Baud: click to choose baud, ranges from 50 to 10,000,000. Data Bits: Set as 5, 6, 7, 8 bits. Data：...
  • Page 43 Multicomp-Pro user Manual I2C Trigger menu list: Menu Setting Instruction Set vertical channel bus type as I2C Bus Type trigger. Set SCL. Source Set SDA. Trigger when SDA data transitions from Start high to low while SCL is high. When another start condition occurs Restart before a stop condition.
  • Page 44 Multicomp-Pro user Manual Single When trigger occurs, acquire one waveform then stop 3. SPI Trigger Trigger on the specified data when the timeout condition is meet. When using SPI trigger, you need to specify the SCL and SDA data sources. In SPI bus trigger mode, the trigger setting information is displayed on bottom right of the screen, for example, , indicates that trigger type is...
  • Page 45 Multicomp-Pro user Manual 4. CAN Trigger CAN (Controller Area Network) is a serial communication protocol of the ISO international standardization. By using the CAN bus trigger, you can trigger on Start of Frame, Type of Frame, Identifier, Data, ID & Data, End of Frame, Missing Ack, or Bit Stuffing Error.

  • Page 46: Bus Decoding

    Multicomp-Pro user Manual Start Trigger on the start frame of the data frame. Data Type Remote Type Trigger on the selected frame. (Bottom Error menu) Overload Format Select Standard or Extend. Configure (Bottom Click to set value, menu) click to move cursor. Click to set the Byte...
  • Page 47 Multicomp-Pro user Manual the characteristics of the signal. When the parameters are set correctly, the information carried by the signal will be displayed. Tip: If there are repetitive menu items in both trigger menu and decoding menu, you can set anyone of them, the other will be changed synchronously. Note: ...
  • Page 48 Multicomp-Pro user Manual the Signal Input Channels of the oscilloscope. (2) Adjust to the proper time base and voltage division. (3) In trigger menu, select Bus trigger, and select bus type as I2C, set parameters based on the characteristics of the signal, trigger the signal correctly and obtain stable display.
  • Page 49 Multicomp-Pro user Manual 3. SPI Decoding To decode SPI signal: (1) Connect the clock line (SCLK) and the data line (SDA) of the SPI signal to the Signal Input Channels of the oscilloscope. (2) Adjust to the proper time base and voltage division. (3) In trigger menu, select Bus trigger, and select bus type as SPI, set parameters based on the characteristics of the signal, trigger the signal correctly and obtain stable display.
  • Page 50 Multicomp-Pro user Manual Select "ON" to display the event table. EventTable If a USB storage device is currently connected to the instrument, save the event table data in a .csv Save (spreadsheet) formatted file on the external USB EventTable storage device. Select "ON"...

  • Page 51: Implement Sampling Setup

    Multicomp-Pro user Manual CAN Decoding menu list: Menu Setting Instruction Set bus type of decoding as CAN. Type Binary Decimal Set the display format of the bus. Format ASCII Select "ON" to display the event table. EventTable Display If a USB storage device is currently connected to the instrument, save the event table data in a .csv Save (spreadsheet) formatted file on the external USB...
  • Page 52 Multicomp-Pro user Manual Function Menu Setting Description 1000 Choose the record length 100K Note: When four channels are turned on, Length the max record length is 10M; and max 20M for two channels; max 40M for one channel. The description of PERF Mode menu is shown as follows: Function Menu Setting Description...

  • Page 53: Implement The Auxiliary System Function Setting

    Multicomp-Pro user Manual Figure 4-5 Linear interpolation Implement the Auxiliary System Function Setting ●Config Click to call up the menu panel. Click the Utility softkey on panel, select Function in the bottom menu, select Configure in the left menu. The description of Configure Menu is shown as the follows: Function Setting Description...
  • Page 54 Multicomp-Pro user Manual The description of is shown as the follows: Display Menu Function Setting Description Menu BackLight 0% - 100% Adjust the backlight. Graticule Select the grid type Battery Turn on or off the battery display Menu Time OFF, 5s - 30s Set the disappear time of menu ●Adjust Click...

  • Page 55: Set The Display System

    Multicomp-Pro user Manual 2. Click to call up the menu panel. Click the softkey on panel Utility select Function in the bottom menu, select Adjust in the left menu. 3. Select ProbeCh. in the bottom menu, tips about probe checking shows on the screen.
  • Page 56 Multicomp-Pro user Manual Function Setting Description Menu Dots Only the sampling points are displayed. Type Vect The space between the adjacent sampling points in the display is filled with the vector form. 1 Second Persist 2 Seconds Set the persistence time Persist 5 Seconds &Colour...
  • Page 57 Multicomp-Pro user Manual Cold (1) Click to call up the menu panel. Click the Display softkey on panel. (2) Select Persist&Colour in the bottom menu. (3) Select Colour in the right menu, choose between ON/OFF. Figure 4-6 The colour temperature function is on Counter It is a 6-digit single-channel counter.

  • Page 58: Save And Recall A Waveform

    Multicomp-Pro user Manual Single, set the trigger mode to Edge, select the signal source. 2. Click , click the Display softkey on panel. 3. Select Counter as ON or OFF in the bottom menu. Save and Recall a Waveform Click to call up the menu panel.
  • Page 59 Multicomp-Pro user Manual Save the waveform of the source to the selected address. Whatever the Type of save menu is set, you can save the waveform by just pressing the Copy Save panel button in any user interface. Select Type in the bottom menu, in the right Format menu, you can select the storage format.
  • Page 60 Multicomp-Pro user Manual 4. Select Storage in the bottom menu, select Internal in the right menu. 5. Select Source in the bottom menu, check CH1, CH2, Math in the right menu for Source. 6. Select Object & Show in the bottom menu, select Wave1 as object address in the left menu.
  • Page 61 Multicomp-Pro user Manual "Figure 3-2 Side Panel". If an icon appears on the top right of the screen, the USB disk is installed successfully. If the USB disk cannot be recognized, format the USB disk according to the methods in "USB disk Requirements"...
  • Page 62 Multicomp-Pro user Manual Figure 4-7: Disk Management of computer 4. Right click 1 or 2 red mark area, choose Format. And system will pop up a warning message, click Yes. Figure 4-8: Format the USB disk warning 5. Set File System as FAT32, Allocation unit size 4096. Check "Perform a quick format"...
  • Page 63 Multicomp-Pro user Manual Figure 4-9: Formatting the USB disk setting 6. Formatting process. Figure 4-10: Formatting the USB disk Check whether the USB disk is FAT32 with allocation unit size 4096 after formatting. Use Minitool Partition Wizard to format Download URL: http://www.partitionwizard.com/free-partition-manager.html Tip: There are many tools for the USB disk formatting on the market, just take Minitool Partition Wizard for example here.
  • Page 64 Multicomp-Pro user Manual 3. Click Reload Disk on the pull-down menu at the top left or push keyboard F5, and information about the USB disk will display on the right side with red mark 1 and 2. Figure 4-11: Reload Disk 4.

  • Page 65: Record/Playback Waveforms

    Multicomp-Pro user Manual 6. Click Apply at the top left of the menu. Then click Yes on the pop-up warning to begin formatting. Figure 4-14: Apply setting 7. Formatting process Figure 4-15: Format process Format the USB disk successfully Figure 4-16: Format successfully Record/Playback Waveforms Click to call up the menu panel.
  • Page 66 Multicomp-Pro user Manual and storage function. The storage medium contains two kinds: Internal and External. When the storage medium is Internal, Wave Record contains four modes: OFF, Record, Playback and Storage. When storage medium is External, Wave Record contains two modes: OFF, Record.
  • Page 67 Multicomp-Pro user Manual Play Begin to record Operate Stop Stop recording Storage: Save the current wave according to the start frame and end frame set. Storage menu shows as follows: Menu Setting Instruction Click to select the number of start Start frame Storage frame to store (1 - 1000)
  • Page 68 Multicomp-Pro user Manual FrameSet Click to select the interval between Interval recorded frames (10ms - 10s) Infinity Record infinitely until the storage medium is full Refresh wave during recording Refresh Stop refreshing Play Begin to record Operate Stop Stop recording Note: Both of the waveforms of Channel 1 and Channel 2 will be recorded.

  • Page 69: Clone And Recall A Waveform

    Multicomp-Pro user Manual Figure 4-17: Play back waveform by software Clone and Recall a waveform Click to call up the menu panel. Click the Save softkey on panel. Select Type in the bottom menu, select Clone in the left menu. You can clone one or two channel waveforms between two cursors, and save it as a cloned waveform into a USB memory device.
  • Page 70 Multicomp-Pro user Manual Click line a to select it, swipe left/right to move it. Click line b to select it, swipe left/right to move it. Two cursors are linked. Click line a or b to select them, swipe left/right to move the pair of cursors. Set the cursors to select the entire screen automatically.
  • Page 71 Multicomp-Pro user Manual the USB memory device as an OTA file. Data format description of OTA waveform file If the source mode is set to Out1 or Out2, OTA file consists of two parts: the file header and the channel data. If the source mode is set to Out1&Out2, OTA file consists of three parts: file header, the first channel data, and the second channel data.

  • Page 72: Update Your Instrument Firmware

    Multicomp-Pro user Manual ADCB Parameter Meaning Value Comment name ADCB ADC bit, ADC 4 bytes int 8-bit or 12-bit resolution CHAN Parameter Meaning Value Comment name CHAN Number of 4 bytes int 1 or 2 channels VOL2 Parameter Meaning Value Comment name VOL2...
  • Page 73 Multicomp-Pro user Manual 1. Click to call up the menu panel. Click the Utility softkey on panel, select Function in the bottom menu, select Configure in the left menu, select About in the bottom menu. View the model and the currently installed firmware version.

  • Page 74: Measure Automatically

    Multicomp-Pro user Manual Measure Automatically Click to call up the menu panel. Click the Measure softkey on panel to display the Measure menu. At most 8 types of measurements could be displayed on the bottom left of the screen. The oscilloscopes provide 39 parameters for auto measurement, including Period, Frequency, Mean, PK-PK, RMS, Max, Min, Top, Base, Amplitude, Overshoot, Preshoot, Rise Time, Fall Time, +PulseWidth, -PulseWidth, +Duty Cycle, -Duty Cycle, Screen Duty, FRR, FRF, FFR, FFF, LRR, LRF,...
  • Page 75 Multicomp-Pro user Manual Reset Restart statistics on statistics Measure Only if the waveform channel is in the ON state, the measurement can be performed. The automatic measurement cannot be performed in the following situation: 1) On the saved waveform. 2) On Waveform Math waveform.
  • Page 76 Multicomp-Pro user Manual RMS, and Cursor RMS. Figure 4-19 below shows a pulse with some of the voltage measurement points. Figure 4-19 Mean: The arithmetic mean over the entire waveform. PK-PK: Peak-to-Peak Voltage. RMS: The true Root Mean Square voltage over the entire waveform. Max: The maximum amplitude.
  • Page 77 Multicomp-Pro user Manual Figure 4-20 Rise Time: Time that the leading edge of the first pulse in the waveform takes to rise from 10% to 90% of its amplitude. Fall Time: Time that the falling edge of the first pulse in the waveform takes to fall from 90% to 10% of its amplitude.

  • Page 78: Customize An Automatic Measurement

    Multicomp-Pro user Manual FFR: Time between Source A first falling edge and Source B first rising edge. FFF: Time between Source A first falling edge and Source B first falling edge. LRR: Time between Source A first rising edge and Source B last rising edge. LRF: Time between Source A first rising edge and Source B last falling edge.

  • Page 79: Measure With Cursors

    Multicomp-Pro user Manual Screen menu button twice to set the cursor range. Statistics Select Statistics, you can choose On or Off to enable or disable statistics on the measurement value. Statistics reset: Restart statistics on statistics. Measure with Cursors Click to call up the menu panel.
  • Page 80 Multicomp-Pro user Manual Time&Voltage for Type, two blue dotted lines displayed along the horizontal direction of the screen, two blue dotted lines displayed along the vertical direction of the screen. Cursor measure window at the left bottom of the screen shows the cursor readout. 4.
  • Page 81 Multicomp-Pro user Manual Figure 4-22 Auto Cursor The Cursor Measurement for FFT mode In FFT mode, click to call up the menu panel. Click the Cursor softkey on panel to switch to the ON state and display the cursor menu. The description of the cursor menu in FFT mode is shown as the following table: Function...

  • Page 82: Use Mathematical Manipulation Function

    Multicomp-Pro user Manual Perform the following operation steps for the amplitude and frequency cursor measurement of math FFT: 1. Click to call up the menu panel. Click the FFT softkey on panel to switch to the ON state and display the FFT menu. In the bottom menu, select Format.

  • Page 83: Waveform Math

    Multicomp-Pro user Manual Factor2 Select the signal source of the factor2 Vertical Click to adjust the vertical position of the (div) Math waveform Vertical Click to adjust the vertical division of the (V/div) Math waveform User Edit fun Intg, Diff, Sqrt, and user defined function Function Vertical Click...

  • Page 84: User Defined Function

    Multicomp-Pro user Manual the operation steps are as follows: 1. Click to call up the menu panel. Click the Math softkey on panel to switch to the ON state and display the math menu on the bottom. The pink M waveform appears on the screen.

  • Page 85: Use Autoscale Function

    Multicomp-Pro user Manual math menu on the bottom. 2. Select DIR in the bottom menu. 3. In the right menu, select channel as CH1 or CH2. 4. In the right menu, select type, select the desired filter type. 5. In the right menu, select window, select the desired window. 6.

  • Page 86: Use Hor Function

    Multicomp-Pro user Manual Then the wave is displayed in the screen, shown as Figure 4-23. Figure 4-23 Autoscale Horizontal-Vertical multi-period waveforms Note: 1. When entering into Autoscale function, a autoscale indicator will be flickering on the top left of the screen. 2.

  • Page 87: Use Fft Function

    Multicomp-Pro user Manual Use FFT function FFT refers to the Fourier transform operation on a certain channel. The FFT menu: Function Menu Setting Description Source Select the FFT source. Hamming Rectangle Blackman Window Select window for FFT. Hanning Kaiser Bartlett V RMS V RMS and Decibels are amplitude Decibels...
  • Page 88 Multicomp-Pro user Manual switch to the ON state and display the FFT menu on the bottom. The pink M waveform appears on the screen. 2. In the bottom menu, select Source. In the right menu, select CH1. 3. In the bottom menu, select Window. In the right menu, select the proper window type.
  • Page 89 Multicomp-Pro user Manual Best solution for frequency, worst for magnitude. Best type for measuring the frequency spectrum of nonrepetitive signals and measuring frequency components near DC. Recommend to use for: Rectangle  Transients or bursts, the signal level before and after the event are nearly equal. ...
  • Page 90 Multicomp-Pro user Manual are examples for measuring sine wave with a frequency of 1kHz under the selection of six different windows for FFT: Figure 4-24 Hamming window...
  • Page 91 Multicomp-Pro user Manual Figure 4-25 Rectangle window Figure 4-26 Blackman window...
  • Page 92 Multicomp-Pro user Manual Figure 4-27 Hanning window Figure 4-28 Kaiser window...

  • Page 93: Use Xy Format

    Multicomp-Pro user Manual Figure 4-29 Bartlett window Notes for using FFT  Use the default dB scale for details of multiple frequencies, even if they have very different amplitudes. Use the Vrms scale to compare frequencies.  DC component or offset can cause incorrect magnitude values of FFT waveform.

  • Page 94: Use Pass/Fail Function

    Multicomp-Pro user Manual The XY menu: Function Setting Description Menu Full Screen Turn on/off the full screen view in XY mode This format is only applicable to Channel 1 and Channel 2. After the XY display format is selected, Channel 1 is displayed in the horizontal axis and Channel 2 in the vertical axis;...
  • Page 95 Multicomp-Pro user Manual Pass Signal tested corresponds with the rule Fail Signal tested not correspond with the rule Output Beep Beep when it satisfies the rule Stop Stop once satisfying the rule Info Control the display status of info frame Source Select the source as CH1, CH2, CH3 or CH4 Horizontal...

  • Page 96: Use Executive Buttons

    Multicomp-Pro user Manual running, the number of Pass/Fail will increase from the former number, not from zero. 5. When the waveform playback mode is on, Pass/Fail is used to test the played-back waveform specially. Use Executive Buttons Executive Buttons include Copy, Default, Run/Stop, Single, Autoset. Copy You can save the waveform by just pushing the Copy panel button in any user interface.

  • Page 97: Print The Screen Image

    Multicomp-Pro user Manual The previous source before autoseting. When the previous source has no input signal, the source will be set to the minimum channel which Trigger Source has input signal. When all the channels have no input signal, the source will be set to CH1.
  • Page 98 Multicomp-Pro user Manual parameters. The On selection of Ink Saver will print out a copy with a white background. (5) Once you have connected a printer to your oscilloscope and set up print parameters, click Play in the bottom menu to print current screen images.

  • Page 99: Communication With Pc

    Multicomp-Pro user Manual 5. Communication with PC The oscilloscope supports communications with a PC through USB and LAN port. You can use the Oscilloscope communication software to store, analyze, display the data and remote control. To learn about how to operate the software, you can push F1 in the software to open the help document.

  • Page 100: Using Lan Port

    Multicomp-Pro user Manual Using LAN Port Connect directly (1) Connection. Plug in the LAN cable to the LAN port in the right panel of the oscilloscope; plug the other end into the LAN interface of the computer. (2) Set the network parameters of the computer. Since the oscilloscope can not support obtaining an IP address automatically, you should assign a static IP address.

  • Page 101: Connect Through A Router

    Multicomp-Pro user Manual Figure 5-3 Set the network parameters of the Oscilloscope Software (4) Set the network parameters of the oscilloscope. In the oscilloscope, click icon, click Utility. Select Function in the bottom menu. Select LAN Set in the left menu. In the bottom menu, set the Type item as LAN, and select Set.
  • Page 102 Multicomp-Pro user Manual IP address. The Default gateway and Subnet mask should be set according to the router. Here we set the IP address to 192.168.1.71, Subnet mask is 255.255.255.0, Default gateway is 192.168.1.1. Figure 5-5 Set the network parameters of the computer (3) Set the network parameters of the Oscilloscope Software.
  • Page 103 Multicomp-Pro user Manual Figure 5-6 Set the network parameters of the Oscilloscope Software (4) Set the network parameters of the oscilloscope. In the oscilloscope, click icon, click Utility. Select Function in the bottom menu. Select LAN Set in the left menu. In the bottom menu, set the Type item as LAN, and select Set.

  • Page 104: User Interface

    Multicomp-Pro user Manual User Interface Horizontal Position Pointer Touch to enter Trigger Level （Selected） Voltage division of CH Touch to Show/hide Time Base & (Touch to select CH, touch stop/continue to menu Horizontal again to turn CH on/off.) synchronize with (see below) Position the oscilloscope.
  • Page 105 Multicomp-Pro user Manual Display Menu Adjust the Set the auto The points will be brightness of grid measurement connected with lines Cursor Menu Check to Check to measure time measure voltage The cursor line can be dragged. Cursor Measurement Setting Menu APP Information...

  • Page 106: Gestures Control

    Multicomp-Pro user Manual Gestures Control Show the vertical position when gesturing Control the Control the trigger vertical position level of the trigger of the selected source channel Control the horizontal position Pinch and spread vertically to change the voltage division of current channel Pinch and spread horizontally to change the time base...

  • Page 107: Demonstration

    Multicomp-Pro user Manual 6. Demonstration Example 1: Measurement a Simple Signal The purpose of this example is to display an unknown signal in the circuit, and measure the frequency and peak-to-peak voltage of the signal. 1. Carry out the following operation steps for the rapid display of this signal: (1) Set the probe menu attenuation coefficient as 10X and that of the switch in the probe switch as 10X (see "How to Set the Probe Attenuation...

  • Page 108: Example 2: Gain Of A Amplifier In A Metering Circuit

    Multicomp-Pro user Manual Figure 6-1 Measure period and frequency value for a given signal Example 2: Gain of a Amplifier in a Metering Circuit The purpose of this example is to work out the Gain of an Amplifier in a Metering Circuit.

  • Page 109: Example 3: Capturing A Single Signal

    Multicomp-Pro user Manual bottom left of the screen (see Figure 6-2). (11) Calculate the amplifier gain with the following formulas. Gain = Output Signal / Input signal Gain (db) = 20×log (gain) Figure 6-2 Waveform of Gain Measurement Example 3: Capturing a Single Signal It's quite easy to use Digital Oscilloscope to capture non-periodic signal, such as a pulse and burr etc.
  • Page 110 Multicomp-Pro user Manual display the Acquire menu. (4) Select Acqu Mode in the bottom menu. Select Peak Detect in the right menu. (5) Click to call up the menu panel. Click the Trig Menu softkey on panel to display the Trigger menu. (6) Select the first menu item in the bottom menu.

  • Page 111: Example 4: Analyze The Details Of A Signal

    Multicomp-Pro user Manual Example 4: Analyze the Details of a Signal Noise is very common inside most of the electronic signal. To find out what's inside the noise and reduce the level of noise is very important function our oscilloscope is capable to offer. Noise Analysis The level of noise sometime indicates a failure of electronic circuit.

  • Page 112: Example 5: Application Of X-Y Function

    Multicomp-Pro user Manual (2) Select Acqu Mode in the bottom menu. (3) Select Average in the right menu, select the average number in the left menu, observe the waveform obtained from averaging the waveforms of different average number. User would see a much-reduced random noise level and make it easy to see more details of the signal itself.
  • Page 113 Multicomp-Pro user Manual (3) Push the CH1 to CH4 button to turn on CH1 and CH2, turn off CH3 and CH4. (4) Push the Autoset button, with the oscilloscope turning on the signals of the two channels and displaying them in the screen. (5) Push CH1 button to select CH1, turn the lower knob, and then push CH2 button to select CH2, turn the lower knob, making the amplitudes of two signals equal in the rough.

  • Page 114: Example 6: Video Signal Trigger

    Multicomp-Pro user Manual 3π /2). Example 6: Video Signal Trigger Observe the video circuit of a television, apply the video trigger and obtain the stable video output signal display. Video Field Trigger For the trigger in the video field, carry out operations according to the following steps: (1) Click to call up the menu panel.

  • Page 115: Troubleshooting

    Multicomp-Pro user Manual 7. Troubleshooting 1. Oscilloscope is powered on but no Display.  Check whether the power connection is connected properly.  Restart the instrument after completing the checks above.  If the problem persists, please contact us and we will be under your service.

  • Page 116: Technical Specifications

    Multicomp-Pro user Manual 8. Technical Specifications Unless otherwise specified, the technical specifications applied are for TAO3000 four-channel series only, and Probes attenuation set as 10X. Only if the oscilloscope fulfills the following two conditions at first, these specification standards can be reached. ...
  • Page 117 Multicomp-Pro user Manual Performance Characteristics Instruction System Dual CH* 0.05 Sa/s - 500 MSa/s Single CH 0.05 Sa/s - 1 GSa/s Interpolation (Sinx)/x, x When four channels are turned on, the max Max Record length record length is 10M; and max 20M for two channels;...

  • Page 118: Trigger

    Printer PictBridge Compatibility Counter Support For MP720645, Max Sample rate (real time) for Dual CH should meet the following condition: CH1 and CH2 can not be turned on simultaneously, CH3 and CH4 can not be turned on simultaneously.  CH1&CH3 on, the others off;...
  • Page 119 Multicomp-Pro user Manual Time setting 30 ns to 10 s Polarity Positive, Negative Pulse Width Runt Trigger >, =, < Condition Pulse Width Range 30 ns to 10 s Polarity Positive, Negative Windows Trigger Trigger Position Enter, Exit, Time Windows Time 30 ns to 10 s Edge Type Rising, Falling...

  • Page 120: General Technical Specifications

    Multicomp-Pro user Manual General Technical Specifications Display Display Type 8" Coloured LCD (Liquid Crystal Display) Display Resolution 800 (Horizontal) × 600 (Vertical) Pixels Display Colours 65536 colours, TFT screen Output of the Probe Compensator Output Voltage About 5 V, with the Peak-to-Peak voltage ≥1 MΩ. (Typical) Frequency (Typical) Square wave of 1 KHz...

  • Page 121: Appendix

    Multicomp-Pro user Manual 9. Appendix Appendix A: Enclosure (The accessories subject to final delivery.) Standard Accessories: Power Cord CD Rom Quick Guide Micro USB Cable Probes Probe Adjust Adapter Stand Holder BNC-SAM Appendix B: General Care and Cleaning General Care Do not store or leave the instrument where the liquid crystal display will be exposed to direct sunlight for long periods of time.

  • Page 122: Appendix C: Battery Using Guide

    Multicomp-Pro user Manual Appendix C: Battery Using Guide Battery level indicator Figure 9-1 Battery level indicator Charging the oscilloscope There will have battery power indication show on the top of panel when oscilloscope power supplied by the battery (if no indication has appeared, see "Display"...

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