The F-35 has a transfer impedance of 1W(± 2 dB) from 100 kHz to 100 MHz. The probe is capable of measuring pulse currents to 100 amperes with a duty cycle of 0.001. It will not saturate when clamped around a conductor carrying 350 amperes of DC to 60 Hz and 200 amperes of 400 Hz powerline current.