... AC/DC ammeter, AC/DC voltmeter, and power meter. Besides, it can also calibrate frequency meter, phase meter, power factor meter, transducer ... with power, electric energy, AC/DC voltage, AC/DC current standards;2.4. DC output ... 75mV step;3.8. DC current and AC current is the same, and add ... DC 1mA step;3.9. DC voltage & current output wave≤1%;3.10. Output voltage, current ...