The JVC Professional FS-790PNAG is a specialized, high-performance fiber optic transmission system engineered for the demanding requirements of large-scale live broadcast, designed specifically for the GY-HM890 camera and utilizing AB-type "Power Wafer" batteries. This system employs Neutrik OpticalCON fiber connectivity to establish a resilient, long-distance link between the camera and the broadcast control core. It consolidates the entire signal and power pathway into a single, durable fiber-optic cable, capable of carrying multiple channels of high-definition video, multi-track audio, comprehensive intercom, precise tally data, camera control signals, and DC power. This integration eliminates the traditional tether of heavy, multi-core copper cables, granting camera operators unprecedented mobility and placement flexibility across expansive venues like stadiums, concert halls, and major event sites.

Central to its design is a camera-mounted adapter powered by an Anton/Bauer "Power Wafer" battery, which supplies clean and continuous DC power to both the fiber-optic transceiver electronics and the camera head itself. This configuration ensures operational reliability and simplifies field logistics by removing the need for a separate, dedicated camera battery. The system's bidirectional data flow over the fiber link not only transmits the camera's pristine output to production but also returns essential signals, including program feed for the camera operator's viewfinder, a dedicated intercom channel for director communication, and real-time tally lights. This transforms the remote GY-HM890 into a fully functional, studio-quality camera system capable of operating seamlessly hundreds of meters from the production hub.