How to measure current with a digital multimeter
To avoid damage to the multimeter or tested equipment:
Before measuring the current, the fuse of the multimeter should be checked first.
When measuring, it is necessary to use the correct terminal, function range, and range range range.
When inserting the test wire into the current terminal, do not connect the probe in parallel to any circuit. To directly test the current using a multimeter, you must disconnect the circuit being tested and then connect the multimeter in series with the circuit. The steps are as follows:
1) Disconnect the power supply of the circuit, discharge all high-voltage capacitors, and create a position where the multimeter probe can be inserted
2) Select A~(AC) or A (DC) gear as needed and refer to the product manual. Insert the black test probe into the COM input socket. Insert the red test probe into the ampere (A) or milliampere (mA/uA) input socket according to the expected reading value.
3) If you use terminal A, please set the rotary switch to the mA/A position. If you use mA/ μ Terminal A, please set the rotary switch to μ On position A (for 6000 μ A (current below 6 mA) or mA/A position (for 6000 μ A or higher current). Connect the probe tip to both ends of the disconnection point so that all current flows through the digital multimeter (in series). (Touch the high potential end of the circuit with a red probe, and touch the low potential end with a black probe. Changing the polarity of the probe will produce a negative reading, but will not damage the multimeter)
4) Reconnect the circuit power and read the displayed value; Be sure to pay attention to the measurement units.
5) Turn off the circuit power and discharge all high-voltage capacitors. Remove the wiring of the multimeter
And restore the circuit to its normal working state.
