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Jimi JM-G3401 User Manual

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吉 米 家 居
JM-G3401
JIMI Multimeter User Manual

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Summary of Contents for Jimi JM-G3401

  • Page 1 吉 米 家 居 JM-G3401 JIMI Multimeter User Manual...

  • Page 2: Safety Warnings

    1. Product Descrip�on JM-G3401 is a pocket-size automa�c digital mul�meter with 3 5/6 digit. This device has stable performance, high precision, high reliability, clear reading and overload protec�on func�ons. It’s powered by two AAA 1.5V ba�eries. The oversized LCD display is powered by a boost voltage to ensure ultra-bright backlight even at low ba�ery of the 2.3V.It’s portable and popular.The backlight is long bright and it can be automa�cally turned off...
  • Page 3 5) Do not input more than 10A current during measurement. 6) Safety symbol: “ 　”means hazardous voltage; “ 　”means grounding; “ 　” means double insula�on， “ 　”means operators must refer to the instruc�on manual; “ ”means Low voltage. 3. Instruc�ons For Use 1) LCD display 2) HOLD bu�on,control the backlight on/off.
  • Page 4 4. Specifica�ons 1) General Informa�on ① Display: LCD ② Display max count: 5999(3 5/6)digit automa�c polarity display ③ Measurement method: high precision high speed A/D converter ④ Sampling rate: about 3 �mes / second ⑤ Overload display: “OL” ⑥ Low voltage: LCD displays “ ”...
  • Page 5 2) Technology Informa�on 2-1. Accuracy: (Reading a%+least significant digit),Ensure accuracy of ambient temperature:(23±5)℃, rela�ve humidity＜75%,The calibra�on guarantee period is one year from the ex-factory date. ▲ 2-2. Performance (“ ”Indicates it has this func�on) Func�on zero/fire line Live test full unit symbol backlight manual/automa�c off...
  • Page 6 2-3. Echnology Index 2-3-1. DC Voltage Accuracy JM-G3401 Resolu�on Measurement Range 600mV 0.1mV ± (0.5%+3) 10mV 600V 100mV 1000V ± (0.8%+10) Input resistance: 10MΩ |Overload protec�on: measurement range of 6V is 550V DC or maximum of AC| Other measurement range is 1000V DC or maximum 750V of AC|...
  • Page 7 Opera�on as following: 1. Insert the Black plug into “COM” jack, insert the Red plug into “V/Ω/Hz” jack. 2. Turn the dial to “ ” and press SELECT bu�on to “DC” measurement mode. (The default value is DC voltage.) 3. Put the test pen in reliable contact with the test point, screen will display the measured voltage value. The connected point of red test pen is the voltage polarity.
  • Page 8 2-3-2. AC Voltage Accuracy JM-G3401 Resolu�on Measurement Range 600mV ± (2.0%+10) 0.1mV ± (0.8%+3) 10mV 600V 100mV 750V ± (1.2%+10) Input resistance: 10MΩ |Standard sinusoidal and triangular wave frequency response is 40Hz-1kHz| Other waveform frequency response is 40Hz-200Hz| Opera�on as following: 1.
  • Page 9 Special care should be taken to avoid electric shock when measuring high-voltage circuits. Must disconnect the test pen from the circuit under test, a�er all measurement opera�ons are completed. 2-3-3. 1.5V/9V Ba�ery Measurement (DC) Accuracy JM-G3401 Discharge Resistance Resolu�on Measurement Range 36Ω...
  • Page 10 It is forbidden to input exceed 36V DC and 25V AC voltage between the current jack and the "COM" jack. Do not input a current value exceed 400mA into the ba�ery, or it will burn out the fuse. 2-3-4. DC mA Accuracy JM-G3401 Resolu�on Measurement Range 60mA 10uA ±...
  • Page 11 Opera�on as following: 1. 400mA current meansurement; Insert the Black plug into “COM” jack, insert the Red plug into “V/Ω/Hz” jack. Turn the dial to “mA” and press SELECT bu�on to “DC” measurement mode.(The default value is DC.); Then use the test pen to measure the circuit. 2.
  • Page 12 2-3-5. AC mA Accuracy JM-G3401 Resolu�on Measurement Range 60mA 10uA ± (1.2%+10) 400mA 100uA ± (2.0%+10) 10mA Maximum measured pressure drop: 600mV |Overload protec�on: 400mA: 200mA/250V Self recovery fuse| 10A: 10A/250VQuick mel�ng ceramic fuse| Opera�on as following: 1. 400mA current meansurement; Insert the Black plug into “COM” jack, insert the Red plug into “V/Ω/Hz”jack.
  • Page 13 2. 10A current meansurement; Insert the Black plug into “COM” jack, insert the Red plug into “10A”jack. Turn the dial to “A ” and press SELECT bu�on to “AC” measurement mode (The default value is DC.); Then use the test pen to measure the circuit. 3.
  • Page 14 2-3-6. Resistance (Ω) Accuracy JM-G3401 Resolu�on Measurement Range ± (0.8%+5) 0.1Ω 600Ω 1Ω 6kΩ 10Ω 60kΩ ± (0.8%+3) 600kΩ 100Ω 1kΩ 6MΩ 10kΩ 60MΩ ± (2.5%+3) Open-circuit voltage: less than 3V |Overload protec�on: 550V DC or maximum of AC Opera�on as following: 1.
  • Page 15 A�en�ons: When measuring low resistance, the test pen will bring internal resistance. In order to obtain accurate readings, you can record the short circuit value of test pen first.Subtract the short circuit value of test pen from the measured reading. When measuring the on-line resistance, all the power supply of the circuit under test must be turned off...
  • Page 16 Opera�on as following: 1. Insert the Black plug into “COM” jack, insert the Red plug into “V/Ω/Hz” jack. (Note the polarity of the red test pen is “+”). 2. Turn the dial to “ ” and press SELECT bu�on to “ ”...
  • Page 17 2-3-8. Capacitance (C) Accuracy JM-G3401 Resolu�on Measurement Range 10pF 60nF 100pF 600nF ± (3.5%+20) 60uF 10nF 600uF 100nF 60mF ± (5%+3) 10uF Overload protec�on: 550V DC or maximum of AC Opera�on as following: 1. Insert the Black plug into “COM” jack, insert the Red plug into “V/Ω/Hz” jack.
  • Page 18 A�en�ons: When measuring capacitance with 10nF, the display value may have a residual reading which is the distributed capacitance of the test pen. To get accurate reading, please subtract this value a�er measurement. When have severe leakage or breakdown of the large capacitance measurement mode, the display value is not stable.
  • Page 19 2-3-9. Frequency Measurement Accuracy JM-G3401 Resolu�on Measurement Range 0.01Hz 10Hz 100Hz 0.1Hz 1kHz ± (0.1%+3) 10Hz 10kHZ 100kHz 100Hz 1MHz 1kHz 10MHz 10kHz Input sensi�vity: 1V RMS |Overload protec�on: 550V DC or maximum of AC (less than 10seconds)
  • Page 20 Frequency Measurement： 1. Insert the test pen plug or shield cable into “COM” jack and “V/Ω/Hz” jack. 2. Turn the dial to “Hz”, connect the test pen or cable to the signal source or load under test, and press “SELECT” bu�on to select duty cycle measurement.
  • Page 21 3. Insert the Red test pen into the zero line or fire line. If it's a fire line, the buzzer will make a con�nuous sound and the backlight is on at the same �me, LCD will display “1”. If it’s the zero line, the device will be switched on. A�en�ons: This func�on is suitable for 50Hz-1KHz frequency signals.

  • Page 22: Trouble Shoo�Ng

    6. Trouble Shoo�ng If your device is not working properly, the following methods can help you quickly solve the general problem. If the error s�ll cannot be removed, please contact the repair center or dealer. Error Inspec�on posi�on and method Power is not connected No Display Replace ba�ery...