... , C scan , D scan, TOFD imaging, guide wave imaging and P-scan function, it is a multi-channel TOFD ... ~1000ns (10ns step)Pulse Repetition Frequency100~1000Hz per channel (1Hz step)Detecting WayHardwareSampling Frequency100MHz/200MHzAmplifier Bandwidth (-6dB ... Defect length, depth, and the height of Multi-channel parameters quantitative analysis; synthetic aperture focusing technique(SAFT)Detection ...