multicomp pro MP720644 User Manual
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multicomp pro MP720644 User Manual

Dual-channel tablet oscilloscope
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MP720644 Dual-Channel Series
Tablet Oscilloscopes
User Manual
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  • Page 1 MP720644 Dual-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 Customize an Automatic Measurement .................. 74 Measure with Cursors ......................75 Use Mathematical Manipulation Function ................78 Waveform math ..............................79 User defined function ............................80 Digital Filter................................80 Use Autoscale function ......................81 Use HOR function ........................82 Use FFT function ........................82 Use XY Format ........................
  • Page 4 User Interface........................ 113 Gestures Control ......................115 8. Demonstration ....................116 Example 1: Measurement a Simple Signal ..............116 Example 2: Gain of a Amplifier in a Metering Circuit ........... 117 Example 3: Capturing a Single Signal ................118 Example 4: Analyze the Details of a Signal ..............120 Example 5: Application of X-Y Function ...............

  • Page 5: 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 6: 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 7 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 Electrical Outlet Probe 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 8: 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 a self-calibration...

  • Page 9: 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 10: 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, CH2 buttons is lighted, this knob is used to adjust the voltage scale of current channel.

  • Page 11: Top Panel

    Multicomp-Pro user Manual 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. 4. USB Host port: It is used to transfer data when external USB equipment connects to the oscilloscope regarded as "host device".
  • Page 12 Multicomp-Pro user Manual Trig: Trigger detected and acquire waveform. Ready: Pre-triggered data captured and ready for a trigger. Click the to force a trigger signal, which is mainly applied to the "Normal" and "Single" trigger modes. Scan: Capture and display the waveform continuously. Stop: Data acquisition stopped.

  • Page 13: How To Implement The General Inspection

    Multicomp-Pro user Manual Rise edge count, "-E" the Fall edge count, "AR" the Area, "CA" the Cycle area. 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"...

  • Page 14: How To Implement The Function Inspection

    Multicomp-Pro user Manual 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. Push the Default button on the front panel.

  • Page 15: 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 16: 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 17: 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 18: 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 19: Introduction To The Trigger System

    Multicomp-Pro user Manual Turn the lower knob to change the horizontal time base, and it can be 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.

  • Page 20: 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 21 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 22 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 23 Multicomp-Pro user Manual Control the trigger level of the source in the trigger menu  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.
  • Page 24 Multicomp-Pro user Manual  Measure with Cursors Click nearby a cursor line as shown in the figure below, the line will be selected, and the C icon will appear. Click anywhere outside the icon to hide it. Note: Swipe in this area, you can make the icon appear and control it. Cursor line Selected Unselected Switch horizontal or vertical lines...

  • Page 25: 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 26: How To Set The Vertical System

    Multicomp-Pro user Manual How to Set the Vertical System The VERTICAL CONTROLS include two menu buttons such as CH1, CH2, and two knobs such as the upper knob, the lower knob. Setting of CH1, CH2 Each channel has an independent vertical menu and each item is set respectively based on the channel.
  • Page 27 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 28: 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 or CH2 at first to select the desired channel, then turn the upper knob to set the...

  • Page 29: Waveform Horizontal Zooming

    Multicomp-Pro user Manual all channels (including mathematical operations). The resolution of this knob 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.
  • Page 30 Multicomp-Pro user Manual (2) Select Magnifier from the bottom menu, and switch to ON. (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.

  • Page 31: How To Operate The Function Menu

    Multicomp-Pro user Manual  When the wave selection is small, a dotted box appears outside the 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.

  • Page 32: 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 33 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 34 Multicomp-Pro user Manual Video Trigger menu list: Menu Setting Instruction Single Video Set vertical channel trigger type as video trigger Select CH1 as the trigger source Source Select CH2 as the trigger source NTSC Modu Select video modulation SECAM Line Synchronic trigger in video line Field Synchronic trigger in video field...
  • Page 35 Multicomp-Pro user Manual 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 stop...
  • Page 36 Multicomp-Pro user Manual Holdoff Single When trigger occurs, acquire one waveform then stop Holdoff 100 ns – 10 s, click to set time interval before another trigger occur, click to move cursor to choose which digit to be set. 5. Runt Trigger Trigger pulses that pass through one trigger level but fail to pass through the other trigger level.
  • Page 37 Multicomp-Pro user Manual Click to set pulse width, click move cursor to choose which digit to be set. Trigger when runt pulse is greater than the set pulse width. Trigger when runt pulse equals to the set pulse width. Trigger when runt pulse is lower than the set pulse width.
  • Page 38 Multicomp-Pro user Manual Enter: Triggers when the trigger signal enters the specified trigger level range. Exit: Triggers when the trigger signal exits the specified trigger level range. Time: Specify the hold time of the input signal after entering specified trigger level.
  • Page 39 Multicomp-Pro user Manual Auto Acquire waveform even no trigger occurred Normal Acquire waveform when trigger occurred Single When trigger occurs, acquire one waveform then Mode stop Holdoff 100 ns - 10 s, click to set time interval Holdoff before another trigger occur, click to move cursor to choose which digit to be set.

  • Page 40: Logic Trigger

    Multicomp-Pro user Manual Edge Trigger on the rising edge of the input signal when voltage level meets the specified trigger level. Edge Trigger on the falling edge of the input signal when voltage level meets the specified trigger level. Set idle time before the edge counting in Nth Edge Trigger.

  • Page 41: Bus Trigger

    Multicomp-Pro user Manual Goes True Trigger when condition turns True from False. Goes False Trigger when condition turns False from True. Is True > Trigger when the time of true condition is greater than the set time Out Mod Is True = Trigger when the time of true condition is equal to the set time Is True <...
  • Page 42 Multicomp-Pro user Manual Select CH1 as the trigger source. Source Select CH2 as the trigger source. Polarity Normal Select polarity of data transmission as Input Normal. Inverted Select polarity of data transmission as Inverted. Trigger on the start frame of position. After Start choosing this condition, press Configure to enter detailed settings.
  • Page 43 Multicomp-Pro user Manual Normal Acquire waveform when trigger occurred Holdoff When trigger occurs, acquire one waveform Single then stop 2. I2C Trigger The I2C serial bus consists of SCL and SDA. The transmission rate is determined by SCL, and the transmission data is determined by SDA. As shown in below figure, oscilloscope can trigger on the start, restart, stop, ack lost, specific device address or data value, also device address and data value at the same time.
  • Page 44 Multicomp-Pro user Manual Addr Set Address Bits to be “7”, “8” or “10”. Bits Set address according to the preset Addr address bits, address range is 0-127, Format 0-255, 0-1023 respectively. Set Data Direction to be Write or Read. Direction Note: The set is not available when Address bits is set to “8”.
  • Page 45 Multicomp-Pro user Manual Time out means SCL keeps idle for a specified time before oscilloscope starts to search for the data (SDA) on which to trigger. Click set time out, click to move cursor to choose which digit to be set. Clock Edge Set Clock Edge as rising edge or falling edge.
  • Page 46 Multicomp-Pro user Manual Select CH1 as the trigger source. Source Select CH2 as the trigger source. CAN_H Actual CAN_H bus signal. CAN_L Actual CAN_L bus signal. Type Transmission signal on the CAN signal line. Received signal on the CAN signal line. Click to set the Sample point, which is a point within a bit’s time.

  • Page 47: Bus Decoding (Optional)

    Multicomp-Pro user Manual Trigger on the end frame of the data frame. Lost Trigger on Missing Ack. Error Trigger on Bit Stuffing Error. Auto Acquire waveform even no trigger occurred Mode Normal Acquire waveform when trigger occurred Holdoff Single When trigger occurs, acquire one waveform then stop Bus Decoding (Optional) 1.
  • Page 48 Multicomp-Pro user Manual Set the data width of each frame to match the signal. Data Bits It can be set to 5, 6, 7 or 8. Set the even-odd check mode to match the polarity Parity used by the signal. Binary Decimal Format...
  • Page 49 Multicomp-Pro user Manual will be displayed in the corresponding position in the waveform. I2C Decoding menu list: Menu Setting Instruction Set bus type of decoding as I2C. 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...
  • Page 50 Multicomp-Pro user Manual be decoded as the reversed sequence 00010010. SPI Decoding menu list: Menu Setting Instruction Bus Type Set bus type of decoding as SPI. Select the clock edge to match the signal, sample the SCLK SDA data on the rising or falling edge of the clock. Set the minimum time that the clock (SCL) signal must be idle before the oscilloscope starts to search Time Out...

  • Page 51: Implement Sampling Setup

    Multicomp-Pro user Manual you can set anyone of them, the other will be changed synchronously. Decoded information interpretation: Information Abbreviation Background Identifier I, ID, or do not display Green Overload Frame Green Error Frame Green Data Length code L, DLC, or do not display Blue Data D, Data, or do not display...
  • Page 52 Multicomp-Pro user Manual Mode, Length, PERF Mode, and Intrpl is shown in the bottom menu. The description of the Acqu Mode menu is shown as follows: Function Menu Setting Description Sample Normal sampling mode. Use to capture maximal and minimal samples.

  • Page 53: Implement The Auxiliary System Function Setting

    Multicomp-Pro user Manual method is suitable to rebuild the straight-edged signals, such as square or pulse wave. Figure 4-4 Sine(x)/x interpolation 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.
  • Page 54 Multicomp-Pro user Manual Function Setting Description Menu Choose the display language of the operating Language system. Display On/Off the date display Hour Min Setting Hour/Minute Set Time Day Month Setting Date/Month Year Setting Year Lock all keys. Unlock method: push HOR KeyLock button, then push Trigger button, repeat 3 times.
  • Page 55 Multicomp-Pro user Manual ProbeCh. Check whether probe attenuation is good. Do Self Cal (Self-Calibration) The self-calibration procedure can improve the accuracy of the oscilloscope under the ambient temperature to the greatest extent. If the change of the ambient temperature is up to or exceeds 5℃, the self-calibration procedure should be executed to obtain the highest level of accuracy.

  • Page 56: Set The Display System

    Multicomp-Pro user Manual Using the LAN port or Wi-Fi, the oscilloscope can be connected with a computer. The oscilloscope also supports communications with Android based smart device via Wi-Fi. Refer to "Communication with PC" on page 101 and " " on page 109 for the Communication with Android Device via Wi-Fi (Optional operation steps.
  • Page 57 Multicomp-Pro user Manual Seconds, 5 Seconds and Infinity. When the "Infinity" option is set for Persist Time, the measuring points will be stored till the controlling value is changed. Select OFF to turn off persistence and clear the display. (5) Select Clear in the bottom menu to erase the results of previous acquisitions from the display.

  • Page 58: Save And Recall A Waveform

    Multicomp-Pro user Manual bandwidth. Only if the measured channel is in Edge mode of Single trigger type, the counter can be enabled. The counter is displayed at the right bottom of the screen. Operation steps: 1. Click , click the Trig Menu softkey on panel, set the trigger type to Single, set the trigger mode to Edge, select the signal source.
  • Page 59 Multicomp-Pro user Manual Recall or close the waveform stored in the current object address. When the show is ON, if the current object address has been used, the stored Show waveform will be shown, the address number and relevant information will be displayed at the top left of the screen;...
  • Page 60 Multicomp-Pro user Manual The oscilloscope can store 100 waveforms, which can be displayed with the current waveform at the same time. The stored waveform called out cannot be adjusted. In order to save the waveform of CH1, CH2 and Math into the address 1, the operation steps should be followed: 1.
  • Page 61 Multicomp-Pro user Manual Whatever the Type of save menu is set, you can save the waveform by just pressing the Copy panel button in any user interface. If the Storage of the save menu is set as "External", you should install the USB disk. Please refer to the contents below to install the USB disk and name the file to be saved.
  • 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 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 to call up the menu panel. Click the Measure softkey on panel to Click 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 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. 3) On the Video trigger mode. On the Scan format, period and frequency cannot be measured.
  • Page 76 Multicomp-Pro user Manual 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. The most positive peak voltage measured over the entire waveform. Min: The minimum 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 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. In the bottom menu, select Line Type as Time to make the vertical cursors active.
  • Page 81 Multicomp-Pro user Manual Auto Cursor 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: to call up the menu panel. Click the FFT softkey on panel to 1. Click switch to the ON state and display the FFT menu. In the bottom menu, select Format.

  • Page 83: Waveform Math

    Multicomp-Pro user Manual 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 to adjust the vertical position of the (div) Math waveform...

  • Page 84: User Defined Function

    Multicomp-Pro user Manual waveform appears on the screen. 2. Select Waveform Math in the bottom menu. 3. In the right menu, select Factor1 as CH1. 4. Select Sign as + in the right menu. 5. In the right menu, select Factor2 as CH2. 6.

  • Page 85: Use Autoscale Function

    Multicomp-Pro user Manual 4. In the right menu, select type, select the desired filter type. 5. In the right menu, select window, select the desired window. 6. When low-pass or high-pass type is selected, select cut-off fre in the right menu. When band-pass or band-reject type is selected, select upper or down in the right menu.

  • Page 86: Use Hor Function

    Multicomp-Pro user Manual 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. In the mode of Autoscale, the oscilloscope can self-estimate Trigger Mode (Edge, Video).
  • Page 87 Multicomp-Pro user Manual 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 Format units; Radian, Degrees are phase units. Radian Degrees Position value...
  • Page 88 Multicomp-Pro user Manual 4. In the bottom menu, select Format. In the right menu, select amplitude unit (V RMS, Decibels) or phase unit (Radian, Degrees). 5. In the bottom menu, select Display. In the right menu, select Hori (Hz); select repeatedly to make the symbol in front of the horizontal position value (the upper one), click to adjust the horizontal position of...
  • Page 89 Multicomp-Pro user Manual Best solution for magnitude, worst for frequency. Recommend to use for: Blackman Single frequency waveforms, to find higher  order harmonics. Good for magnitude, but poorer frequency resolution than Hamming. Recommend to use for: Hanning Sine, periodic and narrow band random noise. ...
  • Page 90 Multicomp-Pro user Manual Figure 4-24 Hamming window Figure 4-25 Rectangle window...
  • Page 91 Multicomp-Pro user Manual Figure 4-26 Blackman window Figure 4-27 Hanning window...
  • Page 92 Multicomp-Pro user Manual Figure 4-28 Kaiser window Figure 4-29 Bartlett window...

  • Page 93: Use Xy Format

    Multicomp-Pro user Manual 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  Trigger control  FFT Operation steps: 1. Click to call up the menu panel. Click the XY softkey on panel to switch to the ON state. 2. To make the XY view full screen, select Full Screen as ON in the bottom menu.

  • Page 95: Use Executive Buttons

    Multicomp-Pro user Manual menu. Set Horizontal tolerance and Vertical tolerance in the right menu. Select Create in the right menu to create the rule. 3. Set output type: Select Output in the bottom menu to enter output option setting. Choose any one or two of the options "Pass", "Fail" or "Beep". "Pass"...
  • Page 96 Multicomp-Pro user Manual When the horizontal time base is ≤50ms, the horizontal time base can be expanded for 4 divisions downwards. Single Push this button you can set the trigger mode as single directly, so when trigger occurs, acquire one waveform then stop. Autoset It's a very useful and quick way to apply a set of pre-set functions to the incoming signal, and display the best possible viewing waveform of the signal.

  • Page 97: Print The Screen Image

    Multicomp-Pro user Manual Note: When the autoscale is turned on and running, the Autoset button is invalid. Description for icon: Cancel Autoset: Go back to display the upper menu and waveform information. Note: The Autoset function requires that the frequency of signal should be no lower than 20Hz, and the amplitude should be no less than 5mv.

  • Page 98: Use The Multimeter

    Multicomp-Pro user Manual 5. Use the Multimeter Input Terminals The input terminals are on the top of the oscilloscope, which marked as COM, V/Ω/C. Input connectors of multimeter Figure 5-1 Multimeter Input Terminals DMM Menu Push DMM button on the front panel to enter/exit the multimeter function. The button backlight will be lighted when the multimeter function is enabled.

  • Page 99: Dmm Information Window

    Multicomp-Pro user Manual Measuring capacitance Hold ON OFF Freeze the display during measurement. When making relative measurements, reading is Relative the difference between a stored reference value and the input signal. Show Info Configure Show/Hide the information window ON OFF Auto Range Select auto range mode Switch Range Select manual range mode, press to switch range...

  • Page 100: Making Multimeter Measurements

    Multicomp-Pro user Manual 7. The reference value of the relative measurement. 8. Range of measuring current: mA or 10A. 9. AC or DC when measuring current or voltage. Making Multimeter Measurements Measuring AC or DC Current (1) Push DMM button on the front panel. Select Current in the bottom menu, select it again to switch between ACA (AC current) or DCA (DC current).

  • Page 101: Testing For Continuity

    Multicomp-Pro user Manual (2) Connect the black test lead to the COM terminal on the top of the oscilloscope and the red test lead to the V/Ω/C terminal. (3) Connect the red test lead to the positive terminal (anode) of the diode and the black test lead to the negative terminal (cathode).

  • Page 102: Information Display

    Multicomp-Pro user Manual testing for continuity. Information Display Show/hide the information window on the top right of the display. (1) Select Configure in the bottom menu, select Show Info in the right menu as ON. The information window will be shown on the display. (2) Select OFF to hide.
  • Page 103 Multicomp-Pro user Manual following: 1. Push DMM button on the front panel to enter the multimeter function. Select Current or Voltage in the bottom menu. If you want to enter the relative mode, select Configure in the bottom menu, select Relative in the right menu. 2.
  • Page 104 Multicomp-Pro user Manual Interval Measurement mode Reference value of the relative measurements 2. Select the data that you want to chart (see Figure 5-4). 3. On the Insert tab, in the Charts group, click Line, and then click Line in 2-D Line (see Figure 5-5).

  • Page 105: Communication With Pc

    Multicomp-Pro user Manual 6. Communication with PC The oscilloscope supports communications with a PC through USB, LAN port or Wi-Fi. 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 106: 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 107: Connect Through A Router

    Multicomp-Pro user Manual Figure 6-3 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 108 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 6-5 Set the network parameters of the computer (3) Set the network parameters of the Oscilloscope Software.

  • Page 109: Using Wi-Fi To Connect With Pc

    Multicomp-Pro user Manual Figure 6-6 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 110 Multicomp-Pro user Manual (1) Set the oscilloscope. In the oscilloscope, click the 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 WIFI-AP, and select Set in the bottom menu.

  • Page 111: Connect With Pc As Wi-Fi Station

    Multicomp-Pro user Manual Figure 6-8 Set the network parameters of the Oscilloscope Software Connect with PC as Wi-Fi Station The oscilloscope and PC should be on the same network (LAN). (1) In the oscilloscope, click the icon, click Utility. Select Function in the bottom menu.
  • Page 112 Multicomp-Pro user Manual (7) Set the network parameters of the computer. Set IP in the computer, the first three bytes is same as the IP in the oscilloscope, the last byte should be different. Here, we set it to 10.1.1.123. The Default gateway and Subnet mask should be set according to the router.

  • Page 113: Communication With Android Device Via Wi-Fi (Optional)

    Multicomp-Pro user Manual 7. Communication with Android Device via Wi-Fi (Optional) The oscilloscope supports communications with Android based smart device via Wi-Fi. You can use the free application software on the Android based smart devices to view the waveform synchronously, perform remote control, the waveform can be saved as image (BMP, PNG) or file (CSV, BIN), or shared via installed sharing apps.
  • Page 114 Multicomp-Pro user Manual (6) Select Save set in the bottom menu to save current settings. (7) In Android device, enter the Wi-Fi settings, select the oscilloscope access point to connect, enter the set password. (8) In Android device, launch the application. (9) Click connect on the left.

  • Page 115: Connect With App As Wi-Fi Station

    Multicomp-Pro user Manual Connect with APP as Wi-Fi Station (1) In the oscilloscope, click the 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 WIFI-STA, and select Set in the bottom menu. (2) In the right menu, select SSID, a keyboard will pop up.
  • Page 116 Multicomp-Pro user Manual (8) In Android device, launch the application. (9) Click connect on the left. (10) Set IP and Port to the same value as the setting in the oscilloscope. Click Confirm to connect. Click History to recall the history settings.

  • Page 117: User Interface

    Multicomp-Pro user Manual User Interface Horizontal Position Pointer Touch to enter Trigger Level （Selected） Voltage division of Touch to Show/hide Time Base & Voltage division of CH2 stop/continue to menu Horizontal (Touch to select CH2, (Colored indicates CH1 synchronize with touch again to turn CH2 (see below) Position...
  • Page 118 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 119: 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 120: Demonstration

    Multicomp-Pro user Manual 8. 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 121: Example 2: Gain Of A Amplifier In A Metering Circuit

    Multicomp-Pro user Manual Figure 8-1 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 122: Example 3: Capturing A Single Signal

    Multicomp-Pro user Manual bottom left of the screen (see Figure 8-2). (11) Calculate the amplifier gain with the following formulas. Gain = Output Signal / Input signal Gain (db) = 20×log (gain) Figure 8-2 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 123 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 124: 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 125: 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 126 Multicomp-Pro user Manual (3) Push the CH1 and CH2 button to turn on CH1 and CH2. (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 127: Example 6: Video Signal Trigger

    Multicomp-Pro user Manual 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 128: Troubleshooting

    Multicomp-Pro user Manual 9. 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 129: 10. Technical Specifications

    Multicomp-Pro user Manual 10. Technical Specifications Unless otherwise specified, the technical specifications applied are for TAO3000 dual-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 130 Multicomp-Pro user Manual Performance Characteristics Instruction Interpolation (Sinx)/x, x When two channels are turned on, the max record length is 20M; and max 40M for one Max Record length channel. Scanning speed (S/div) 2ns/div - 1000s/div, step by 1 – 2 - 5 Sampling rate / relay ±10 ppm max (Ta = +25℃) time accuracy...

  • Page 131: Trigger

    Multicomp-Pro user Manual Performance Characteristics Instruction Decoding Type UART, I C, SPI, CAN (optional) Waveform storage 100 waveforms Bandwidth Full bandwidth Lissajous Phase figure ±3 degrees difference Communication USB Host, USB Device; Trig Out(Pass/Fail); LAN port port Printer PictBridge Compatibility Counter Support Trigger...

  • Page 132: Multimeter

    Multicomp-Pro user Manual Edge Type Rising, Falling Timeout Trigger Idle Time 30 ns to 10 s Edge Type Rising, Falling Nth Edge Trigger Idle Time 30 ns to 10 s Edge Number 1 to 128 Logic Mode AND, OR, XNOR, XOR Input Mode H, L, X, Rising, Falling Logic Trigger...

  • Page 133: General Technical Specifications

    Multicomp-Pro user Manual DCV: 20mV, 200mV: ±(0.5%+10digit); 2V, 20V, 200V: ±(0.3%+5digit); 1000V: ±(0.5%+5digit) Max. input: DC 1000V Voltage ACV: 20mV, 200mV, 2V, 20V, 200V: ±(0.8%+10digit) 750V: ±(1%+10digit) Frequency: 40Hz-1000Hz, Max. input: AC 750V (virtual value) DCA: 20A: ±(2%+10digit) Current ACA: 20A: ±(2.5%+10digit) 200Ω: ±(0.8%+10digit) 2KΩ...

  • Page 134: 11. Appendix

    Multicomp-Pro user Manual 11. Appendix Appendix A: Enclosure (The accessories subject to final delivery.) Standard Accessories: Power Cord CD Rom Quick Guide Micro USB Cable Probes Current Ext Probe Adjust AC-DC Adapter Stand Holder BNC-SAM Module Multimeter Lead 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 135: Appendix C: Battery Using Guide

    Multicomp-Pro user Manual 1. Wipe the dust from the instrument and probe surface with a soft cloth. Do not make any scuffing on the transparent LCD protection screen when clean the LCD screen. 2. Disconnect power before cleaning your Oscilloscope. Clean the instrument with a wet soft cloth not dripping water.
  • Page 136 Multicomp-Pro user Manual Replacing the Lithium Battery Unit It is usually not required to replace the battery unit. But when it is required to replace it, only qualified personnel can carry out this operation, and only use the same specification lithium battery. INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF ELECTRICAL &...

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