Measurement functions; MEM (high-speed recording),REC (real-time recording), RMS (50/60Hz, or DC only), REC & MEM (include the Real-time save function), FFT Maximum sampling rate; 1 MS/second (1μs, all channels simultaneously) External sampling (500kS/second, 2μs) Memory capacity; 32Mwords total,(9608/opt), Time axis; 100μs to 5min/DIV, 20 ranges or external sampling, time axis Sampling rate; 1/100 of time axis ranges External sampling ; Max. 500kS/s (minimum sampling period 2μs)