① Insert the black test lead into the COM jack and the red test lead into the V/Ω jack.
② Put the function switch in the DC voltage range V-range, and connect the test lead to the power supply to be tested (to measure the open circuit voltage) or the load (to measure the load voltage drop). The polarity of the red lead will be displayed on the display at the same time. superior.
③ Check the reading and confirm the unit
Примечание:
①If you don't know the voltage range to be measured, set the function switch to the maximum range and gradually decrease it.
②If the display only shows "1", it means over-range, and the function switch should be set to a higher range.
③means do not measure voltage higher than 1000V, it is possible to display higher voltage value, but there is a danger of damaging the internal circuit.
④When measuring high voltage, pay special attention to avoid electric shock.
Измерение переменного напряжения
①Insert the black test lead into the COM jack and the red test lead into the V/Ω jack.
②Place the function switch in the AC voltage range V range, and connect the test pen to the power supply or load to be tested. The test connection diagram is the same as above. When measuring AC voltage, there is no polarity display.
GVDA Digital Clamp meter GD118B:
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