Communication Networks (ComNet), Danbury, Conn., has released its second generation of digital fiber-optic video and data transmitters and receivers. The FVT1031UTC and FVR1031UTC Series digital fiber-optic video transmitters and receivers support up-the-coax protocols for use over multimode or single-mode optical fiber. The new models feature a 10-bit all-digital single-fiber design that offers outstanding video performance and provides RS-250C short-haul quality video.