1. Inspection or preparation before use

Before using the instrument, a visual inspection should be conducted, and the grounding terminal of the three core power cord should be reliably grounded. Then, the instrument should be powered on. At this time, the two meter heads should be on. The stopwatch power switch should be turned on, and the stopwatch switch should be normal. Touch the 'Output Selection' button switch with your hand, and the output status indicator light should select 'Normal' from left to right.

2. Main circuit voltage output operation

Select the output state to the "AC0-250V" range, press the "output control switch" on the main circuit in the lower right corner of the test box, slowly adjust the large knob of the voltage regulator, and at this time, the voltage/current meter should display the "0-250V" AC voltage. To output "DC0-350V", select the output state in the "DC0-350V" range and adjust it using the same method as above.

3. Main circuit current output operation

Select the output state to the "AC0-10A" position, press the main circuit "output control switch" to slowly adjust the voltage regulator knob. At this time, the voltage/current meter should display the "0-10A" current, and other current regulation methods should be the same.

4. Auxiliary circuit output operation

Press the "Output Control" switch on the auxiliary circuit, slowly adjust the small knob, and there will be AC "0-20V", "0-250V", and DC "0-350V" outputs on the output terminal of the auxiliary circuit, which are not monitored by the voltage/current meter.