# HDcctv

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> Source: https://en.wikipedia.org/wiki/HDcctv
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{{Short description|High Definition closed circuit TV system}}
{{Infobox technology standard
| title             = HDcctv
| long_name         = [High Definition](/source/High-definition_television) [Closed Circuit Television](/source/Closed_Circuit_Television)
| native_name       = <!-- Name in local language. If more than one, separate using {{plain list}} -->
| native_name_lang  = <!-- ISO 639-2 code e.g. "fr" for French. If more than one, use {{lang}} inside native_name items instead -->
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| organization      = HDcctv Alliance
| committee         = 
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| website           = <!-- {{URL|http://hdcctvalliance.org/}} -->
}}

'''HDcctv''' ([High Definition](/source/High-definition_television) [Closed Circuit Television](/source/Closed_Circuit_Television)) is an open industrial standard for transmitting uncompressed [high-definition analog](/source/Analog_high-definition_television) (AHD) or [digital video](/source/digital_video) over [point-to-point](/source/point-to-point_(telecommunications)) [coaxial cable](/source/coaxial_cable) links for [video surveillance](/source/video_surveillance) applications.<ref>{{Cite web |date=2016-03-16 |title=HDcctv - The Fast Path to HD Surveillance |url=http://www.highdefcctv.org/hdcctv-specification |access-date=2023-08-29 |archive-url=https://web.archive.org/web/20160316094138/http://www.highdefcctv.org/hdcctv-specification |archive-date=2016-03-16 }}</ref><ref>{{Cite book |last=Terzis |first=Anestis |url=https://books.google.com/books?id=Beu9CwAAQBAJ&dq=ahd+analog&pg=PA253 |title=Handbook of Camera Monitor Systems: The Automotive Mirror-Replacement Technology based on ISO 16505 |date=2016-03-09 |publisher=Springer |isbn=978-3-319-29611-1 |pages=253 |language=en}}</ref><ref>{{Cite book |last1=Crawford |first1=Scott B. |url=https://books.google.com/books?id=eEGjDwAAQBAJ&dq=ahd+analog&pg=PA174 |title=Comprehensive Healthcare Simulation: Operations, Technology, and Innovative Practice |last2=Baily |first2=Lance W. |last3=Monks |first3=Stormy M. |date=2019-07-17 |publisher=Springer |isbn=978-3-030-15378-6 |pages=174 |language=en}}</ref> HDcctv uses the [SMPTE](/source/SMPTE) [HD-SDI](/source/HD-SDI) protocol and can transmit [720p](/source/720p) or [1080p](/source/1080p) video over at least 100 m of [RG59](/source/RG59) cable.

The HDcctv Alliance is a non-profit, global consortium that develops and promotes the HDcctv standard. Advantages over [IP video surveillance](/source/IP_video_surveillance) are claimed to include low [latency](/source/latency_(engineering)) and zero configuration.

Devices incorporating HDcctv interfaces include video cameras, [DVR](/source/Digital_video_recorder)s and repeaters.

== Cabling ==

One of the main advantages of HDcctv is that it does not require significant modification for existing [CCTV](/source/Closed-circuit_television) systems designed for analog cameras originally using composite [NTSC](/source/NTSC) or [PAL](/source/PAL) video, for which extensive cabling and labor was invested for installation of the original analog system.

Since the coaxial cables originally used for the analog system have significant unused data spectrum available, it is a simple matter to just replace the camera and the recorder to obtain nearly seven times higher detail (1920x1080 vs 640x480) than the original camera system. Since coaxial cable is capable of carrying a hundred [HDTV](/source/HDTV) channels simultaneously, there is still more unused data capacity available for future resolution improvements.

==References==
{{Reflist}}
*{{webarchive|url=https://web.archive.org/web/20160401124324/http://www.highdefcctv.org|date=April 1, 2016|title=HDcctv Alliance Homepage}}
*[http://www.sourcesecurity.com/tags/hd-cctv.html Resource for High Definition CCTV News & Applications]

Category:Surveillance

{{Tv-tech-stub}}

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Adapted from the Wikipedia article [HDcctv](https://en.wikipedia.org/wiki/HDcctv) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/HDcctv?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.