Designed to assist hardware, software and system validation engineers in developing, testing and validating 64-bit and 33/66-MHz PCI-based systems, the PBT-515 offers debugging capabilities in a single-slot PCI short card. It is a complete logic analyzer for PCI buses up to 64 bits wide and at clock speeds up to 66.7 MHz, and a bus exerciser for PCI buses up to 64 bits wide and at clock speeds up to 33.3 MHz. The unit is operated through USB or RS-232 from a PC running Windows 95/98/NT and the company's BusView GUI, via RS-232 from an ASCII terminal. The unit may be powered from the target system or from an external power supply.