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MP730424

Digital Multimeter

User Manual

Summary of Contents for MP730424

Page 1: ...i MP730424 Digital Multimeter User Manual...

Page 2: ...5 General Inspection 5 Dimensions 5 Foot Stool Adjustment 6 Front Panel Overview 6 Rear Panel Overview 8 User Interface 9 Power On 10 Measurement Connections 11 3 Functions and Operations 13 To Set Th...

Page 3: ...cklight 31 Clock 31 Default 31 4 Measurement Tutorial 33 Loading Errors DC Voltage 33 True RMS AC Measurements 34 Loading Errors AC Voltage 35 Crest Factor Errors non sinusoidal inputs 36 5 Troublesho...

Page 4: ...nditions or practices that could result in damage to this product or other property Terms on the Product The following terms may appear on this product Danger It indicates an injury or hazard may imme...

Page 5: ...Refer to the user s manual for the Measurement Limits before connecting to the instrument Do not exceed any of the Measurement Limits defined in the following section Do not operate without covers Do...

Page 6: ...ut Measurement Limits The HI and LO input terminals are used for voltage resistance continuity frequency period capacitance diode and temperature test measurements Two Measurement Limits are defined f...

Page 7: ...he maximum measurable voltage is 1000 Vpk in the HI LO terminal 600 V CAT II IEC Measurement Category II Inputs may be connected to AC mains power up to 600 VAC under Category II overvoltage condition...

Page 8: ...place until the complete instrument and accessories have passed the electrical and mechanical tests 2 Check the Accessories Check that all parts and accessories as described in the Appendix A Enclosu...

Page 9: ...t saves current reading each time the Save key is pressed See page 29 Manual Record Record Access menus of manual record and auto record See page 29 Data Record Function Run Stop Start or stop auto tr...

Page 10: ...crew driver to turn the fuse holder counter clockwise and pull out the fuse holder Put the new specified fuse into the fuse holder and insert the assembly back into the instrument turning the fuse hol...

Page 11: ...Fuse The fuse rating is 250 V F1AL To replace the fuse see page 41 Appendix C Line Fuse Replacement 3 AC Mains Input AC mains input connector 4 Chassis Ground Screw To ground the chassis 5 Instrument...

Page 12: ...us Icon Figure 2 3 User interface Single display Secondary function Primary function reading Primary function Figure 2 4 User interface Dual display Trigger Mode Status Icon Display Description Trigge...

Page 13: ...ct 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 sh...

Page 14: ...damage do not discretionarily switch the measurement function when measuring DC Voltage Measurement DC Voltage AC Voltage Measurement AC Voltage DC Current Measurement DC Current AC Current Measureme...

Page 15: ...12 Capacitance Measurement Capacitance Frequency Period Measurement AC Signal Temperature Measurement Temp Transducer I...

Page 16: ...ht menu you can press the key to switch between auto and manual range Press to enable manual range and increase or decrease the measurement range 2nd Method Select the range in the measurement functio...

Page 17: ...perating Steps 1 Enable the DCV measurement Press on the front panel to enter DCV measurement mode 2 Connect the test lead DC Voltage 3 Set the range Press the Range softkey to set the range Auto rang...

Page 18: ...age 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 750 V input protection is available in all ranges 10...

Page 19: ...or current protection the 10 A current input fuse on the front panel and the built in 12 A current input fuse 10 over range for all ranges except 10 A range If the reading exceeds 10 5 A in 10 A range...

Page 20: ...fuses for current protection the 10 A current input fuse on the front panel and the built in 12 A current input fuse 10 over range for all ranges except 10 A range If the reading exceeds 10 5 A in 10...

Page 21: ...nded to reduce the measurement error caused by test lead resistance and contact resistance between the probe and the testing point because these two resistances can not be ignored any more compared to...

Page 22: ...ation 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 Tip If the measured...

Page 23: ...press to increase or decrease the value The range for the 1 to 1000 The default is 50 5 Continuity measurements behave as follows Circuit resistance to be measured Display and beep Short circuit resis...

Page 24: ...rements behave as follows Forward pressure drop of diode Display and beep 0 to 3 V Displays measured voltage and the multimeter beeps when the voltage is below 0 7 V if beeper enabled 3 V Displays Ope...

Page 25: ...overload will be displayed 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 opera...

Page 26: ...te 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...

Page 27: ...he 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 Val only the temperature value will be...

Page 28: ...urement function keys to turn on the primary measurement function 2 Press on the front panel the secondary function list is shown on the right menu select the desired function 3 When dual display is e...

Page 29: ...en dual display is turned on if the Max Min dB dBm or relative value is turned on dual display will be automatically turned off When the dual display is enabled manual record function can save both of...

Page 30: ...ly apply to ACV and DCV measurements The functions allow you to scale measurements relative to a reference value Press the front panel key press the dB dBm softkey to access the menu Press the Model s...

Page 31: ...0 600 800 900 1000 1200 or 8000 Press the dB Ref Value softkey to select the relative value The relative value must be from 120 to 120 dBm default 0 Relative Value When the relative operation is turne...

Page 32: ...table by serial number The icon will show up on the top of the display Note The measurement function can be switched during manual record Save only the main display readings 2 View the manual record...

Page 33: ...to start auto record The icon will show up on the top of the display Press the Stop softkey to stop recording the data table shows the readings taken press keys to turn the page Note Automatic record...

Page 34: ...functions 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 l...

Page 35: ...ght 100 Math dB dBm Off On Off Function dB Rel R 50 Db Rel 0 Max Min Static Off Record Auto Clear Manual Clear Point 100 Interval 1S Aoto On Off Off Other Run Stop Run Rel Off Beeper Off Threshold 50...

Page 36: ...the DUT Device Under Test is an appreciable percentage of the multimeter s input resistance as shown below HI LO Ideal Meter Rs Vs Ri Vs ideal DUT voltage Rs DUT source resistance Ri multimeter input...

Page 37: ...f the input waveform are measured DC is rejected As seen in the figure above for sine waves triangle waves and square waves the AC coupled and AC DC values are equal because these waveforms do not con...

Page 38: ...capacitance and loading The table below shows the multimeter s approximate input resistance at various frequencies Input Frequency Input Resistance 100 Hz 1 M 1 kHz 850 k 10 kHz 160 k 100 kHz 16 k For...

Page 39: ...s do not apply for input signals below 100Hz You can estimate the measurement error due to signal crest factor as shown below Total Error Error Sine wave Error Crest factor Error Bandwidth Error Sine...

Page 40: ...for our service 2 The reading does not change when a current signal is input 1 Check whether the test lead is correctly inserted into the current input terminals I terminal and LO Input terminal 2 Che...

Page 41: ...15 10 50 mA 0 001 mA 0 15 20 500 mA 0 01 mA 0 15 10 5 A 0 0001 A 0 5 10 10 A 5 0 001 A 0 5 10 True RMS AC Current 6 500 uA 500 mA 0 5 20 5 A 10 A 1 5 20 Resistance 7 500 0 01 0 1 10 5 k 0 0001 k 0 1...

Page 42: ...hout relative operation add 0 20 additional error in 2 wire ohms function 8 Except for special marks when frequency 10M Hz the specification is applicable to 1V AC input voltage when frequency 10 MHz...

Page 43: ...ock disconnect the instrument from AC mains power and disconnect all test leads before cleaning 2 Clean the outside of the instrument using a wet soft cloth not dripping water Do not make any scuffing...

Page 44: ...t leads and other cables from the instrument including the power cord 2 Use a flat blade screwdriver to remove the fuse box 3 Replace the fuse with a new one install it into the fuse box and push the...

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