A fully operational digital ultrasonic testing instrument is provided when using the QUT2000 software, the PCUS 11 hardware and a standard personal computer, accounting for many advantages by using this computer-aided concept in ultrasonic testing. The storage capacity and data management capabilities of a personal computer is combined with the intelligence of the QUT2000 software. Both components build their potential on the dedicated analog and digital circuits of the PCUS 11 card. QUT2000 is conceived for manual operation in the field as well in a laboratory, running under Windows2000© and WindowsXP©.