... , AC/DC voltmeter, and power meter. Besides, it can also calibrate frequency meter, phase meter, power factor meter, transducer, power load transformer ... steps/positions: 0.1A, 0.5A, 1A, 2.5A, 5A, 10A, 20A, with fine regulation 0.01%, each step has 20% allowance;3.3 ... and AC current is the same, and add DC 1mA step;3.9. DC voltage & current output wave≤1%;3.10. Output voltage ...