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INSTRUCTION MANUAL

PROFESSIONAL

DIGITAL MULTIMETER

IV

MT1881

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Summary of Contents for MT1881 IV

Page 1: ...INSTRUCTION MANUAL PROFESSIONAL DIGITAL MULTIMETER IV MT1881 ...

Page 2: ...2 ...

Page 3: ...citance Measurements 11 6 9 Frequency Measurement 11 6 10 Mode Button 12 6 11 Data Hold Button 12 6 12 Range Button 12 6 13 Min Max Button 12 6 14 Low Battery Indication 12 7 Maintenance 13 7 1 Battery Installation 13 8 Specifications 14 8 1 DC Voltage 14 8 2 AC Voltage Auto ranging 14 8 3 AC Voltage VFD 14 8 4 DC Current Auto ranging 15 8 5 AC Current Auto ranging 15 8 6 Resistance Auto ranging 1...

Page 4: ...nd exceeds in this case 1000 VAC or VDC This symbol adjacent to one or more terminals identifies them as being associated with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be handled when these terminals are energized This symbol indicates that a device is protected throughout by double insulation or reinfo...

Page 5: ...UTION when working with high voltages 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 1000V above earth 4 NEVER connect the meter leads across a voltage source while the function switch is in the current resistance or diode mode Doing so can damage the meter 5 ALWAYS discharge filter capacitors in power supplies and disconnect the power when making resistance or diode tests 6...

Page 6: ...display 2 Hz button 3 RANGE button 4 MODE button 5 Function switch 6 mA μA and 10A input jacks 7 COM input jack 8 Positive input jack 9 Backlight and Hold button 10 MAX MIN button 11 REL button Note Tilt stand and battery compartment are on rear of unit ...

Page 7: ...t Direct current Maximum Auto Range Timing symbol Backlight Bargraph Volts Frequency Conversion Measure Auto ranging Display hold Minimum 6 OPERATING INSTRUCTIONS WARNING Risk of electrocution High voltage circuits both AC and DC are very dangerous and should be measured with great care 1 ALWAYS turn the function switch to the OFF position when the meter is not in use 2 If OL appears in the displa...

Page 8: ...ert the black test lead banana plug into the COM input jack insert the red test lead banana plug into the Positive input jack 3 Position the black test probe tip and red test probe tip respectively in the spots of the circuit to be measured 4 Read the voltage on the display 5 Press and hold the MODE Button key for 2 seconds to indicate VFD on the display 6 Read the VFD value on the display 7 To ex...

Page 9: ...Connect the black test probe tip and the red test probe tip in series to the circuits current you want to measure 8 Apply power to the circuit 9 Read the current on the display 6 4 AC CURRENT FREQUENCY DUTY CYCLE MEASUREMENT CAUTION Do not make 10A current measurements for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads 1 Insert the black test lead b...

Page 10: ...e COM jack Insert the red test lead banana plug into the positive Ω jack 3 Press the MODE button to indicate Ω on the display 4 Touch the test probe tips across the circuit or part under test It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading 5 Read the resistance on the display 6 6 CONTINUITY CHECK WARNING To avoid el...

Page 11: ...d an Open device will indicate OL in both polarities 6 8 CAPACITANCE MEASUREMENTS 1 Set the rotary function switch to the Ω CAP position 2 Insert the black test lead banana plug into the negative COM jack 3 Insert the red test lead banana plug into the positive V jack 4 Touch the test leads to the capacitor to be tested Read the capacitance value on the display 6 9 FREQUENCY MEASUREMENT 1 Set the ...

Page 12: ... 2 seconds to Exit the Manual Ranging mode and return to Auto Ranging 6 13 MIN MAX BUTTON The meter displays the maximum or minimum value of input in the Max Min mode When Max Min is pressed for the first time the meter displays the maximum value The meter displays the minimum value when it is pressed again When Max Min is pressed for the third time the meter displays current value The meter retur...

Page 13: ... chemicals cleaning solvents or detergents 5 USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE Remove old or weak batteries so they do not leak and damage the unit 6 IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME the batteries should be removed to prevent damage to the unit 7 1 BATTERY INSTALLATION WARNING To avoid electric shock disconnect the test leads from any source of voltage...

Page 14: ...acy 6 000V 0 001V 0 8 of reading 4 digits 60 00V 0 01V 600 0V 0 1V 1000V 1V 0 8 of reading 8 digits 8 2 AC VOLTAGE AUTO RANGING All AC voltage ranges are specified from 5 of range to 100 of range Input Impedance 10MΩ AC Response 50 Hz to 400Hz Maximum Input 1000V DC or 1000V AC RMS Range Resolution Accuracy 50 0V to 600 0V 0 1V 4 0 of reading 9 digits 8 3 AC VOLTAGE VFD Input Impedance 10MΩ AC Res...

Page 15: ...A 60 00mA 0 01mA 600 0mA 0 1mA 6 000A 0 001A 2 0 of reading 3 digits 10A 0 01A 8 5 AC CURRENT AUTO RANGING All AC Current ranges are specified from 5 of range to 100 of range Overload Protection FF800mA 1000V and F10A 1000V Fuse AC Response 50 Hz to 400 Hz Maximum Input 6000uA AC RMS on uA 800mA AC RMS on mA 10A AC RMS on 10A range Range Resolution Accuracy 600 0Ω 0 1Ω 1 0 of reading 2 digits 6 00...

Page 16: ... Accuracy 9 999Hz 0 001Hz 1 0 reading 4 digits 99 99 Hz 0 01Hz 999 9 Hz 0 1Hz 9 999KHz 1 Hz 99 99kHz 10Hz 999 9kHz 100Hz 9 999MHz 1kHz 10 00MHz 0 01MHz 8 8 FREQUENCY ELECTRONIC AUTO RANGING Sensitivity 0 5V RMS while 1MHz Sensitivity 3V RMS while 1MHz Input Protection 250V DC or 250V AC RMS Range Resolution Accuracy 10 00 1KHz 0 01Hz 1 5 reading 8 9 FREQUENCY ELECTRICAL Sensitivity ACmV Range 100m...

Page 17: ...to 400Hz Crest Factor 3 at full scale up to 500V decreasing linearly to 1 5 at 1000V Display 6000 count backlit liquid crystal with bargraph Overrange indication OL is displayed Range Resolution Accuracy 0 3mA typical 1 mV 10 of reading 5 digits 8 11 DIODE TEST Open circuit voltage MAX 3 2V DC Overload protection 250V DC or 250V AC RMS Note Accuracy specifications consist of two elements reading T...

Page 18: ...age Humidity 80 Operating Altitude 7000ft 2000meters maximum Weight 0 753lb 342g includes holster Size 7 36 x 3 2 x 2 0 187 x 81 x 50mm includes holster Safety This meter is intended for origin of installation use and protected against the users by double insulation per EN61010 1 and IEC61010 1 2nd Edition 2001 to Category IV 600V and Category III 1000V Pollution Degree 2 The meter also meets UL 6...

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