... ,Support USB for data transmission to PC 3,20 automatic measurements 4,FFT 5,Sample rate:Max up to 250MS/s Portable Digital ... Waveform math +, -, FFT Lissajous figureBandwidth 25MHzPhase difference ±3 degrees Interface USB Data Cable (Transfer waveform data to a PC) Power supply ... Power consumption≤15W Fuse 1A, T grade, 250V O/s Portable Digital Storage Oscilloscope