The multi-channel ultrasonic testing system PCUS 40 is based on standard PC bus systems (ISA or PCI) and can be configured for essentially any client-specific application. The system is designed to operate with standard and specific signal-processing methods and provides numerous upgrading capabilities realized through additional expansion boards and/or add-on components. Integration into other PC-based systems, such as the Multi-Frequency Eddy Current system (MFEC), is easily accomplished. The basic version of the PCUS 40 system is geared toward ultrasonic piping inspections. In conjunction with IZFP’s digital Phased-Array front end, the PCUS 40 system is also highly suited for the ultrasonic testing of heavy components such as reactor pressure vessels.