How to Use Multi Meter

AVO meter or can also be called Multi Meter is very important function in any electronics work because it can help get the job done easily and quickly, but before using it, the users need to know in advance the types of AVO meters and how to use them in order to avoid misuse and AVO will damage the meter.

Based on the working principle there are two types of AVO meters are:
1. AVO meter Digital
2. AVO meter Analog / Moving coil

Both types are of course different from one another, but there are some similarities in terms of its operations, such as the source of energy is needed in the form of a DC battery and probe / cable investigator red and black colors.

At AVO meter Digital Measurement results can be read directly in the form of numbers (digits) while the AVO meter analog zoom using the movement of the needle to indicate the scale, so as to obtain measurement results, should be read by Range or divinisi, AVO analog meter is more commonly used because it is more Cheap of the AVO Digital meters, but there are also those who choose AVO meter analog for sheer indulgence.

How to measure DC voltage

     Put the selector switch (selector switch) on the position of the DC voltage
     Select the measuring limit (2.5,10,50,250,1000) which should be chosen limits equal to or greater than the voltage to be measured, eg 12v voltage to be measured, the measurement boundary should be selected is 50.
     Should not choose a smaller limit measure, because the needle will move past the maximum limit and can damage the moving coil.
     Connect the probe to a voltage source, the red wire is connected to the positive part and the black wire is connected to the negative part, how to install as it is called parallel connections, cabling If the polarity reversed, the meter needle will move left.
     Read boards scale according to which the pointer stops, the most appropriate way to read is perpendicular to avoid misreading.

How to measure AC voltage

     Put the selector switch (selector switch) on the position of the AC voltage
     Select the measuring limit (10,50,250,1000) limit measure chosen must be equal to or greater than the voltage to be measured, eg 220v voltage to be measured, the measurement boundary should be selected is 250, must not choose a smaller limit because the needle pointer will move past the maximum limit and will damage the moving coil.
     Connect the probe to a voltage source in parallel, for AC voltage red and black wires can be freely connected to a voltage source for AC voltage has no polarity (+/-).
     Read boards scale according to which the pointer stops, the most appropriate way to read is perpendicular to avoid misreading.


How to measure DC current

How to measure somewhat different flow by measuring the voltage, wherein the circuit to measure the current installed by means of series with the load, the load can be a resistor, or other lights.

     Set the selector switch (selector switch) on the DC current posis
     Adjust the position of the selector on the limit measure higher than the current to be measured, the limit measure can be selected the most high so as not to damage the AVO meter, measuring the influence of electoral boundaries too far from the current to be measured only result in inaccurate readings.
     Connect the cable in series with the load, the load can be wired in series on the negative or the positive cable, cabling If the polarity is reversed, then the meter needle will move to the left.
     Read the current appointment at the appropriate scale board DC current needle position.

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How to measure the resistance

Resisitansi measuring point is to determine the condition of a component in a state of disrepair or both, as well as to determine what is the value of resistance, Suppose a resistor has the color code brown, black, red and tolerance is gold, means that the resistor has a value of 1000 ohms with a tolerance of 5%, resistor means is still said to be good if after the measured value is still among the more or less 5% from 1000, or between 950 to 1050 ohms.
     Set selector switch in position ohm
     select the measuring limit (range) if: x1, x10, x100, or X1K (adjust the resistor value)
     First short circuit wiring investigators that the needle meter moves towards the right and can be configured to show the maximum scale by rotating the Zero adjust, meaning that can meter reading / appropriate to the scale and range were used.
     start measuring resistor with connecting cables investigator on both legs resistors in parallel, regardless of the color of the cable ....
     Read the appropriate scale board in which a needle meter stops, and multiply the reading by measuring limit, for example the needle indicates the scale 10 and the limit measure using x100 then the resistor value is 1000 ohms.