Hi, I am a new user of Ultrasound. I am using Ultrasonic Pulser-Receivers 5072PR (Olympus NDT INC, USA) which connected to an oscilloscope PicoScope 5204 (Pico Technology, UK) and a personal computer via USB 2.0 port running PicoScopeÒ6 software. A 10 MHz (V129-RM) and 20 MHz (V116-RM) ultrasound co...