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Grass Valley Helps WGBH Upgrade Station Infrastructure

Boston’s WGBH-TV recently completed a significant upgrade of its production infrastructure with new equipment from Grass Valley. This included two new routers, a router control system and new multiviewers. The new technology will add new production capabilities and enhance the station’s workflow.

Making an upgrade in such a high-pressure, 24/7 environment is always a challenge. Emeric Feldmar, director of engineering, and his team had to ensure that the process did not create any disruption in production or content delivery, so everything was very carefully planned before beginning the installation. Miles of temporary patch jacks were installed to ease the transition, and once the new routers and control system were up and running, the switch was almost immediate.

Serving as its main signal distribution core, WGBH-TV chose the Nvision 8576 (a 576x1152 router in a single 32 RU frame), and the Nvision 8144 (a 144x144 router in single 8 RU frame). Both routers are part of the Nvision 8500 Hybrid router series, combining resilience with cost, space and power efficiency.

The new routers are controlled by a Grass Valley NV9000 Control System, which includes a wide range of highly adapted panels for control plus advanced, highly resilient router controllers.

A new Nvision 8576  576x1152 router in a single 32 RU frame was chosen as the main core distribution platform.

A new Nvision 8576 576x1152 router in a single 32 RU frame was chosen as the main core distribution platform.

WGBH-TV also selected Grass Valley Keleido-X multiviewers, which are ideal for applications demanding high picture counts per display and total non-blocking flexibility. The Kaleido-X is available in two frames—up to 96 inputs and eight multiviewer outputs (7 RU), or up to 32 inputs and four multiviewer outputs (4 RU). With its advanced metadata extraction, signal probing and alarming capabilities, Kaleido-X is designed for master control and headend environments.

In addition, WGBH-TV uses Belden cables throughout the facility. Some of that cabling had to be upgraded to meet the requirements of the new infrastructure equipment.

WGBH is a Public Broadcasting Service (PBS) member station that first debuted more than 60 years ago—and today is responsible for more than two-thirds of the PBS programming that is distributed to member stations across the country. The control room at the WGBH-TV facility in Boston supports several other PBS member stations in New England as well as several PBS radio stations. The content volume is high, and the new router and infrastructure solutions from Grass Valley now in place are a key part of making sure that viewers around the country continue to enjoy the PBS programming they have come to love.

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