Fiber optics plays a vital role in HD-over-coaxial transmission, extending the length of such transmission to beyond 500 meters, according to Hong Kong-based OT Systems. HD-over-coaxial solutions have gained momentum lately, delivering crystal-clear images over users’ existing cable infrastructure and offering a non
Fiber optics plays a vital role in HD-over-coaxial transmission, extending the length of such transmission to beyond 500 meters, according to Hong Kong-based OT Systems.
HD-over-coaxial solutions have gained momentum lately, delivering crystal-clear images over users' existing cable infrastructure and offering a non-IP alternative to those looking for HD surveillance. Major HD-over-coaxial standards today include HDCVI, HDTVI, and AHD.
A pitfall for HD-over-coaxial, however, is the fact that it is limited by the transmission distance of 500 meters, after which video degradation occurs. To extend the transmission distance, fiber optics must be used.
There was a time when HD-SDI was the only non-IP signal that could be converted to optic signal. “As a result, distance was a main factor for deciding what HD technology to be employed,” said Darius Lukocius, Director of Sales for EMEA at OT Systems.
Yet today, technological advances have allowed fiber transmission to apply to other HD-over-coaxial solutions, including HDTVI. HDCVI players also claim that they have come up with solutions enabling conversion from HDCVI to optic, thus allowing video transmission of over 500 meters.
According to Lukocius, being a provider of comprehensive transmission solutions, OT does see the need to develop fiber optic products that support all kinds of HD formats. “However, when to have such products depends on several things, including the popularity of such technology, the proprietary nature or patent of such technology, and the effectiveness of the costing of such products,” he said.