The JVC Professional FS-790TNG is a tactical fiber optic transmission system specifically engineered to enable long-range, high-quality video and data transmission for the JVC GY-HM890 professional camcorder in demanding field production environments. This system converts the camera's HD-SDI video, audio, Genlock, and control signals into an optical signal for transmission over a single-mode fiber optic cable. It is designed for applications such as electronic news gathering (ENG), live event coverage, and military/tactical operations where reliable, interference-free, and long-distance signal transmission is required, often in environments with significant electromagnetic interference (EMI) or where radio frequency (RF) transmission is impractical or insecure.

The system consists of two core units: a compact transmitter that attaches directly to the GY-HM890 camera, and a companion receiver unit that interfaces with production switchers, recorders, or monitoring equipment. The use of fiber optic cable provides significant advantages over copper, including immunity to EMI/RFI, no ground loop issues, extremely low signal loss over kilometers of distance, and enhanced security as the signal is difficult to intercept. The tactical design implies a ruggedized construction to withstand harsh environmental conditions, and the system often includes features for rapid deployment.

By leveraging fiber optic technology, the FS-790TNG system extends the operational range and reliability of the GY-HM890 camera far beyond the limits of traditional coaxial cable. It allows camera operators to be positioned at a great distance from the production hub without sacrificing signal quality, providing unprecedented flexibility and signal integrity for critical field production and broadcast contribution.