What are the functions of the two rows of measuring ranges on the analog multimeter?
Every time you use an analog multimeter, you must adjust the ohm to zero, put the red and black test leads together to set the resistance level, and adjust the knob "0Ω" to adjust the meter pointer to 0.
Let’s talk about the multimeter head first. The first measuring range of the analog multimeter head is the resistance Ω. The resistance value of the resistor should be viewed from right to left. The resistance value is larger as you go to the left. The readings become denser as you go to the left, until infinity. , infinity is the backward "8".
The meter ranges listed behind the resistor are the AC voltage, DC voltage range and DC current range. The readings of these ranges are normal when viewed from left to right, and become larger as you go to the right.
Further back are the capacitors, transistors, and battery levels, which I won’t go into detail.
Next, let’s talk about the dial. The most special thing on the dial is the resistance range (Ω). The ranges of the ohm range are all multiples of the actual reading. For example, in the ×10 range, when you read 100 on the meter, it must be at ×10, which is 1,000 ohms.
The readings of DCV DC voltage, ACV AC voltage, and DCMA DC current gear are relatively normal. You can just select the gear to a certain position and calculate according to the ratio. For example, if you measure the AC voltage of 220 and select the 500V level, you must divide the dial into five equal parts, so the 220 position is to the left of the center.
Other gears, such as the six holes on the upper left, are for measuring HFE transistors, OFF is for shutting down, and C is for measuring capacitance.
