Technical characteristics of the digital multimeter
1.Measuring range
(1) AC and DC voltage (AC frequency of 45Hz ~ 500Hz); range were 200mV, 2V, 20V and 1000 five grades, DC accuracy of ± (0.8% of the reading +2 words) or less, AC accuracy of ± (1% of the reading +5 words); Input impedance, DC file for 10MΩ, AC file for 10MΩ, 100PF.
(2) AC and DC current
Range of 200μA, 2mA, 200mA and 10A five grades, DC accuracy of ± (1.2% of the reading + 2 words), AC accuracy of ± (2.0% of the reading + 5 words), * the largest voltage load of 250mV (AC RMS).
(3) Resistance:
The ranges are: 200Ω, 2kΩ, 200kΩ, 20MΩ and 20MΩ six grades. Accuracy is ± (2.0% of the reading + 3 words).
(4) diode conduction voltage:
The range is 0~1.5V, and the test current is 1mA±0.5 mA.
(5) Triode β-value detection:
Test conditions are: VCE=2.8V, IB=10μA.
(6) Short circuit detection:
Test circuit resistance <20Ω±10Ω
2. Sampling time: T S=0.4S.
Digital Multimeter Overview
The digital multimeter is a three-and-a-half-digit LCD display small digital multimeter. It can measure AC and DC voltage and AC and DC current, resistance, capacitance, transistor β-value, diode on voltage and circuit shorting, etc. By a rotary band switch to change the function and range of the measurement, a total of 30 gears.
