Functional Characteristics of Analog Multimeters
There are generally four scale lines on the analog multimeter head, representing the readings of resistance, voltage/current, and level.
The calibration of each level of the ohmmeter is based on its respective center resistance value, so when measuring resistance, the pointer should be placed as close to the center of the scale as possible to reduce errors. The calibration of each level of ammeter and voltmeter is based on their respective full-scale values. Therefore, when measuring, the pointer should be placed as close as possible to the full-scale value to reduce errors.
The measurement of level is actually achieved through the measurement of AC voltage. Therefore, although level is defined by taking the logarithm of power ratio, it can be transformed into the measurement of voltage. Since the zero power level is the level at which lmW power is obtained on a 600W load, the voltage on the load at the zero power level is the zero level voltage.
The decibel scale on the dial corresponds to the lowest level of AC voltage (10V level).
Application of analog multimeter
An analog multimeter is a portable analog multimeter used for measuring weak electrical circuits. It can be used to measure the voltage of small communication devices, household appliances, light lines, and various batteries, as well as to perform circuit analysis using its additional functions.
Characteristics of analog multimeter
1. Automatic programming, high input impedance.
2. Voltage and resistance are automatically set to the most suitable range.
3. Automatic polarity conversion.
4. 1-10M Ω high input impedance.
5. Series capacitor input type.
6. No need to zero.
7. Built in battery inspection function.
