(USA) +1 (855) 4-VIALITE
(UK) +44 (0)1793 784389
Home > Broadcast
Fiber based technologies are being used in an increasing number of broadcast applications. One example is the use in outside broadcast (OB) situations, either live or recorded. The trend in OB locations is for wider coverage areas and an increasingly large number of coverage points to be linked. The industry has standardised on radio cameras for such operations, which allows more extensive coverage, but issues remain regarding the link between the OB control van and the remote receive points for the wireless cameras. These connections, often to multiple locations, have to handle a significant number of HD feeds from the cameras, which are operating in dual or quad diversity modes. These examples are beyond the limit of triax, which traditionally has been used in OB situations. Fiber based connections offer much higher performance signal transmission over tens of kilometres and are lighter and faster to deploy in temporary OB locations. The benefits of using fiber in OB and other broadcast applications has been made possible by miniaturising the O/E transmitters and receivers. These small form factor modules can be built into wireless camera receivers to convert the raw or down converted broadcast signal onto fiber for relay back to the OB control van. Such diversity based camera receiver units are available from several manufacturers and have been deployed in stadiums, race tracks and even golf courses as they steadily replace conventional triax solutions.
The broadcast industry is slowly migrating from copper cables to video and audio-over-fiber. Optical fiber is small in diameter and lightweight compared to coaxial cable. The ViaLite RF-over-Fiber product range is designed to offer leading edge RF performance combined with innovative and flexible solutions for the broadcast industry in applications such as:
The broadcast industry places great demands on its equipment. Products have to be rapidly deployable, high performance, very reliable and always available. ViaLite video and audio-over-fiber links are designed to be used with little or no previous knowledge of optical fiber technology and are used extensively in outside broadcast as well as fixed installations. ViaLite products use the rugged and reliable Lemo K series fiber optic connector, the electrical version of this connector is already used widely within the broadcast industry.
Vialite in Sports Events
Coverage of live events like motor racing or other sports is a common application for RF over fiber. In such events broadcasters transmit video and/or audio over fiber with at least quad diversity - four or more receiver sites that consist of antennas and down-converters to receive the signal from the wireless cameras. These remote sites form a mesh network of coverage but can be several hundred metres away from the OB control truck. Such distances can only be achieved using optical fiber since this is beyond the scope of copper based connections. ViaLite is used to relay live content back to the OB hub over optical fiber from these diversity receivers. In the OB truck, the optical receivers convert the media back to RF video/audio which is then fed to the editing suite.
ViaLite is a member of the IABM.
|Satellite L Band||Application notes||Dual redundancy||ViaLiteHD|
|Markets||Satellite IF||Case studies||Monitor and control||RF over fibre technology|
|Satcom||UHF/VHF||User manuals||WDM/CWDM multiplexing||Corporate|
|Timing and synchronisation||Wideband||FAQs||Digital data||Exhibitions|
|Military and defence||Timing/reference||Datasheets||Careers|
|Mines and tunnels||GPS||Service||Locations||Electro-optical conversion|
|Government and public safety||Antennas|
|Custom products||Racks and enclosures||News||Distributors||Contact Us|