Automated microwave and RF test systems, the Cassini ATE platform, are the field Roos Instruments, Inc. pioneers, designing modular test equipment for semiconductors with a focus on high-frequency testing (DC to 86 GHz and beyond) for automotive, aerospace, defense, and consumer-electronics customers. Founded in 1989 and headquartered in Santa Clara, California, its Cassini platform, built on more than 30 years of research, combines a single receiver with object-oriented software for high-throughput, accurate testing that shortens time-to-market, integrating advanced technologies such as LabVIEW and supporting high-speed production testing for millions of chips a year. Founded by RF microwave engineers including Mark Roos, the company emphasizes sustainability with 100% renewable energy use, equipment recycling, and adherence to the Responsible Business Alliance's Code of Conduct.