multicomp pro MP730889 User Manual
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multicomp pro MP730889 User Manual

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Digital Multimeter User Manual
MP730889
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  • Page 1 Digital Multimeter User Manual MP730889...

  • Page 2: Table Of Contents

    Table of Contents 1.Safety Information...................... 1 Safety Terms and Symbols ....................1 General Safety Requirements ....................2 Measurement Limits ......................3 Main Input Terminals Measurement Limits ..................3 Current Input Terminal Measurement Limits ..................3 Measurement Category ...................... 3 2.Quick Start ........................5 General Inspection ......................
  • Page 3 4.Measurement Tutorial ....................33 Loading Errors (DC Voltage) ....................33 True RMS AC Measurements ....................34 5.Troubleshooting ....................... 35 6.Technical Specifications .................... 36 7.Appendix ........................38 Appendix A: Enclosure ....................... 38 Appendix B: General Care and Cleaning ................38 Appendix C: Line Fuse Replacement ................... 39...

  • Page 4: Safety Information

    Multicomp-pro 1. Safety Information 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 5: General Safety Requirements

    Multicomp-pro General Safety Requirements Before any operations, please read the following safety precautions to avoid any possible bodily injury and prevent this product or any other products connected from damage. In order to avoid any contingent danger, this product is only used within the range specified.

  • Page 6: Measurement Limits

    Multicomp-pro Measurement Limits The protection circuitry of the multimeter can prevent damage to the instrument and protect against the danger of electric shock, when the Measurement Limits are not exceeded. To ensure safe operation of the instrument, do not exceed the Measurement Limits shown on the front panel, it is defined as follows: Main Input Terminals Measurement Limits Input and COM Input terminals are used for voltage, resistance,...
  • Page 7 Multicomp-pro Measurement CAT II applies to protect against transients from energy-consuming equipment supplied from the fixed installation, such as TVs, PCs, portable tools, and other household circuits. Measurement CAT III applies to protect against transients in equipment in fixed equipment installations, such as distribution panels, feeders and short branch circuits, and lighting systems in large buildings.

  • Page 8: Quick Start

    Multicomp-pro 2. Quick Start General Inspection After you get a new multimeter, it is recommended that you should make a check on the instrument according to the following steps: 1. Check whether there is any damage caused by transportation. If it is found that the packaging carton or the foamed plastic protection cushion has suffered serious damage, do not throw it away first till the complete device and its accessories succeed in the electrical and mechanical property tests.

  • Page 9: Front Panel Overview

    Multicomp-pro 86.5 mm 64 mm Front Panel Overview Figure 2-1 Front panel overview Name Description Display the user interface Menu selection Activate the corresponding menu Keys...
  • Page 10 Multicomp-pro Measurement DC or AC voltage measurements Function Keys DC or AC current measurements Resistance, continuity, and diode measurements Capacitance measurements Frequency/Period measurements Temperature measurements Power button Turn on/off the multimeter. Range/Direction When the Range softkey is shown on the right menu, you Keys can press the key to switch between auto and...

  • Page 11: Rear Panel Overview

    Multicomp-pro Rear Panel Overview Figure 2-2 Rear panel overview...

  • Page 12: User Interface

    Multicomp-pro Name Description Communication int connected to the computer via USB Device. erface Line Fuse The fuse rating is . To replace the fuse, see page 250 V, F1AL 39, Appendix C: Line Fuse Replacement. AC Mains Input AC mains input connector. User Interface Trigger Mode Status Icon...

  • Page 13: Power On

    Multicomp-pro Figure 2-4 User interface (Dual display) Power On (1) Connect the instrument to the AC supply using the supplied power cord. Warning: To avoid electric shock, the instrument must be grounded properly. (2) Press down the power button at the front panel, the screen shows the boot screen.

  • Page 14: Measurement Connections

    Multicomp-pro Measurement Connections After selecting the desired measurement function, please connect the signal (device) under test to the multimeter according to the method below. To avoid instrument damage, do not discretionarily switch the measurement function when measuring. DC Voltage Measurement AC Voltage Measurement AC Voltage DC Voltage...
  • Page 15 Multicomp-pro Continuity Test Resistance Measurement Open or Closed Circuit Resistance Diode Measurement Capacitance Measurement Capacitance Forward Bias Frequency/Period Measurement Temperature Measurement AC Signal Temp Transducer...

  • Page 16: Functions And Operations

    Multicomp-pro 3. Functions and Operations To Set the Range The instrument provides auto and manual range. In auto range, the multimeter selects a proper range automatically according to the input signal; in manual range, you can use the front panel key or menu softkey to set the range. The auto range can bring a lot of convenience for users while the manual range provides higher reading precision.

  • Page 17: Measurement Speed

    Multicomp-pro Measurement Speed The instrument provides three types of measurement speed: "Low" speed is 4 reading/s; "Mid" speed is 16 reading/s; "High" speed is 65 reading/s. In DCV, ACV, DCI, ACI and resistance measurements, the measurement speed is selectable. Basic Measurement Functions Measuring DC Voltage This section describes how to configure DC voltage measurements.

  • Page 18: Measuring Ac Voltage

    Multicomp-pro 5. Set the measurement speed. Press the Speed softkey to switch between Low, Mid and High. See page 15 ” Measurement Speed”. 6. Set the relative value. Press the Rel softkey to turn on or off the relative operation. For relative operation, the multimeter subtracts the pre-specified value of REL operation from the actual measurement result and displays the result.

  • Page 19: Measuring Dc Current

    Multicomp-pro 6. Set the relative value. Press the Rel softkey to turn on or off the relative operation. For relative operation, the multimeter subtracts the pre-specified value of REL operation from the actual measurement result and displays the result. See page 28, Relative Value. Measuring DC Current This section describes how to configure DC current measurements.

  • Page 20: Measuring Ac Current

    Multicomp-pro 4. Set the range. Press the Range softkey to set the range. Auto range automatically selects the range for the measurement based on the input. Note: The multimeter uses two kinds of fuses for current protection: A 10A fuse is built ...
  • Page 21 Multicomp-pro AC Current When the Function is set as mA, connect the test lead as below. AC Current 4. Set the range. Press the Range softkey to set the range. Auto range automatically selects the range for the measurement based on the input. Note: The multimeter uses two kinds of fuses for current protection: A 10A fuse is built ...

  • Page 22: Measuring Resistance

    Multicomp-pro Measuring Resistance This section describes how to configure resistance measurements. Operating Steps: 1. Enable resistance measurement. Press on the front panel to enter resistance measurement mode.

  • Page 23: Continuity Test

    Multicomp-pro 2. Connect the test lead. Resistance 3. Set the range. Press the Range softkey to set the range. Auto range automatically selects the range for the measurement based on the input. Note: 1000 V input protection is available in all ranges. ...

  • Page 24: Diode Test

    Multicomp-pro 2. Connect the test lead. Open or Closed Circuit 3. Set the beeper. Press the Beeper softkey to enable or disable the beeper. When the beeper is enabled, the reading is below 30 Ω, the multimeter will beep continuously. Set the short-circuit resistance.

  • Page 25: Measuring Capacitance

    Multicomp-pro 2. Connect the test lead. Forward Bias 3. Set the beeper. Press the Beeper softkey to enable or disable the beeper. When the beeper is enabled, the diode is connected, the multimeter will beep continuously. Diode measurements behave as follows: Forward pressure Display and beep drop of diode...

  • Page 26: Measuring Frequency And Period

    Multicomp-pro 2. Connect the test lead. Capacitance Tip: Please short contact the two feet of an electrolytic capacitor by using a test lead before measuring the electrolytic capacitor. 3. Set the range. Press the Range softkey to set the range. Auto range automatically selects the range for the measurement based on the input.

  • Page 27: Measuring Temperature

    Multicomp-pro 2. Connect the test lead. AC Signal 3. Note Frequency range: 20 Hz to 60 MHz.  750 V input protection is available in all ranges.  4. Set the relative value. Press the Rel softkey to turn on or off the relative operation. For relative operation, the multimeter subtracts the pre-specified value of REL operation from the actual measurement result and displays the result.
  • Page 28 Multicomp-pro 2. Connect the test lead. Temp Transducer 3. Set the sensor configuration file. Press the Load softkey, choose KITS90 or Pt100. 4. Set the display. Press the Display softkey to set the display mode of the result. Temp: only the temperature value will be displayed; measure: only the measurement value will be displayed.

  • Page 29: Dual Display

    Multicomp-pro Dual Display Using dual display function, you can view the readings of two measurement functions simultaneously. Primary function reading Secondary function Primary function Figure 3-1 Dual Display Operating Steps: 1. Press one of the measurement function keys to turn on the primary measurement function.

  • Page 30: Data Hold

    Multicomp-pro Data Hold Data hold keeps the current reading on the display. (1) Press the Run/Stop panel key to stop the trigger, and the current reading is kept on the display screen. (2) Press the Run/Stop key again to continue triggering. Math The multimeter provides these math functions: Max/Min, dB/dBm and relative.

  • Page 31: Relative Value

    Multicomp-pro dB Function  dB represents the relative value which is used in the relative operation of dBm value. When enabled, the multimeter calculates the dBm value of the reading and subtracts the preset dB from this value and then displays the result: dB = 10 x Log ( reading / reference resistance / 1 mW) - dB preset...

  • Page 32: Data Record Function

    Multicomp-pro Data Record Function Data record function includes manual record and auto record. You can use any or both functions to record the data. Manual and automatic records share a table of data stored in internal storage. The maximum number of recorded points is 1000. After collecting the data, it can be exported to the computer.
  • Page 33 Multicomp-pro Press the Interval softkey to specify the time interval between readings. The range is 15 ms to 9999.999 s. 2. Record data: Press the Start softkey to start auto record. The icon will show up on the top of the display. Press the End softkey to stop recording, the data table shows the readings taken.

  • Page 34: Utility Menu

    Multicomp-pro Utility Menu You can set the parameters of the system-related functions and port parameters in utility menu. Press the panel key to view the instrument model, firmware version, serial number, and checksum. Language Press the front panel key, press the Language softkey to switch display languages.

  • Page 35: Communication Interface Settings

    Multicomp-pro Beeper Threshold 50Ω Freq Mode Freq Unit ℃ Dual Display Load KITS90 Mode Range Auto Speed Communication interface settings Press the front panel key, press the Next softkey to access the communication interface setting menu. Press the Baud softkey to select the desired baud rate from 2400, 4800, 9600, 19200, 38400, 57600 or 115200.

  • Page 36: Measurement Tutorial

    Multicomp-pro 4. Measurement Tutorial Loading Errors (DC Voltage) Measurement loading errors occur when the resistance of the DUT(Device-Under-Test) is an appreciable percentage of the multimeter's input resistance, as shown below. Ideal Meter = ideal DUT voltage = DUT source resistance = multimeter input resistance 100 R ×...

  • Page 37: True Rms Ac Measurements

    Multicomp-pro True RMS AC Measurements The AC measurement of the multimeter has true RMS response. Power dissipated in a resistor is proportional to the square of an applied voltage, independent of the wave shape of the signal. This multimeter accurately measures true rms voltage or current, as long as the wave shape contains negligible energy above the meter’s effective bandwidth.

  • Page 38: Troubleshooting

    Multicomp-pro 5. Troubleshooting 1. The instrument is powered on but no Display. 1) Check if the power is connected properly. 2) Check if the line fuse which is below the AC Mains Input is used appropriately and in good condition (see page 39, Appendix C: Line Fuse Replacement). 3) Restart the instrument after the steps above.

  • Page 39: Technical Specifications

    Multicomp-pro 6. Technical Specifications Function Range Resolution Accuracy: ± (% of reading + LSB) 50.000 mV 0.001 mV 0.1% + 10 500.00 mV 0.01 mV 0.05% + 5 5.0000 V 0.0001 V 0.05% + 5 DC Voltage 50.000 V 0.001 V 0.05% + 5 500.00 V 0.01 V...
  • Page 40 Multicomp-pro [6] Specifications are for amplitude of sine wave input > 0.5% of range. For inputs from 1% to 5% of range, add 0.1% of range extra error. [7] Specifications are for 2–wire ohms using the relative operation of math. Without relative operation, add ±0.20 Ω...

  • Page 41: Appendix

    Multicomp-pro 7. Appendix Appendix A: Enclosure Standard Accessories (subject to final delivery): Spare Fuse Crocodile clip Test lead Power Cord Quick Guide USB Cable 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 42: Appendix C: Line Fuse Replacement

    Multicomp-pro Appendix C: Line Fuse Replacement The line fuse is in the plastic fuse box below the power line input on the rear panel. Warning: Disconnect the line cord at the rear panel and remove all test leads connected to the instrument before replacing the line fuse. Failure to do so could expose the operator to hazardous voltages that could result in personal injury or death.

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