전기전자분야의 임피던스를 비롯한 각종 값 측정
Frequency range 20hz to 3Mhz 1800 step
Frequency range 6440B:20 Hz to 3 MHz > 1800 steps,Accuracy of set frequency ±0.005%,Pre-set frequencies:20, 25, 30, 40, 50, 60, 80, 100, 120, 150 repeats for each decade