... TFT LCD with touch screen USB, LAN, VGA Digital Ultrasonic Flaw Detector instrument used in mine TOFD410Detailed ... ~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) ...