Tutorial on how to use a Fluke multimeter

Fluke Multimeter Tutorial.

Tutorial on how to use a Fluke multimeter

　　Speakers, headphones, dynamic microphones: Using the R×1ω setting, any pen connected to one end and the other pen touches the other end, and it will normally make a crisp clicking sound. If it doesn't sound, the coil will break, and if the sound is small and sharp, there will be a problem of rubbing the coil and it can't be used.

Measuring capacitors: Use the resistance range, select the appropriate range according to the capacitor capacity, and pay attention to the black pen of the electrolytic capacitor when measuring, and connect the positive pole of the capacitor. (1) Estimate the capacity of microwave capacitors: according to experience or reference to standard capacitors of the same capacity, according to the maximum amplitude of pointer swing. The reference capacitors do not need the same withstand voltage values, as long as the capacitance is the same, for example, it is estimated that a 100μF/250V capacitor can be used as a reference with a 100μF/25V capacitor as a reference, as long as the maximum amplitude of their pointer swing is the same. (2) Estimate the size of the pico-level capacitance: to use the R×10kΩ range, but only the capacitance above 1000pF can be measured. For capacitors of 1000pF or a little larger, as long as the dial hand swings slightly, the capacity is considered sufficient. (3) Measure whether the capacitance leaks: for capacitors above 10,000 microfars, you can first use R×10Ω fast charging, and then preliminarily estimate the capacitance, and then change to R×100000pF or slightly larger capacitance, and then change to R×10000kΩ, then to R×1kΩ, then to R×1kΩ, and then to R×1kΩ.

The quality of drive test diodes, transistors and regulators: Because in the actual circuit, the bias resistance of the triode or the surrounding resistance of the diode and the regulator tube are generally relatively large, mostly above a few hundred ohms, we can use the R×10ω or R×1ω of the multimeter to measure the PN junction on the road surface. When measuring the pavement, the PN junction measured with R×10Ω should have obvious forward and reverse characteristics (if the difference between the forward and reverse resistance is not obvious, it can be measured with R×1Ω). In general, when the forward resistance is measured in the R×10Ω range, the gauge hand should indicate around 200Ω, and when the R×1 is measured, the gauge hand should be indicated at about 30Ω (it may vary slightly depending on the phenotype). If the forward resistance value is too large or the reverse resistance is too small, it means that there is a problem with the PN junction and there is also a problem with the pipe. This method is particularly effective when it comes to maintenance, where bad pipes can be found very quickly, and even pipes that have not been completely damaged but whose characteristics are damaged can even be measured. Compared to if you measure with a small resistance value, if you use a small resistance that is too large or the reverse resistance is too small, it will not work properly or work properly.

Measuring resistance: The important thing is the selection range. When the pointer indication is in the range of 1/3 - 2/3, the measurement accuracy is the highest and the reading is the most accurate. It should be noted that when measuring the European high resistance resistance with the R×10k resistance range, do not pinch your fingers at both ends of the resistance, so that the human resistance will make the measurement result smaller.

Tutorial on how to use a Fluke multimeter

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