The HDCVI is the abbreviation of High Definition Composite Video Interface (HDCVI), which is one of recent technologies for offering high definition solution to analog surveillance system (CCTV). HDCVI is a video transmission technology in high definition via coaxial cable, allowing reliable long-distance HD transmission at lower cost, while complex deployment is applicable. HDCVI modulates video signal to level and then transmit by adopting base-band and quadrature amplitude modulation; which is also the reason of its naming. This technology avoids the cross talk of CVBS and completely separates the brightness signal and hue signal, hence further enhances video quality. HDCVI offers two specifications — 1920H (1920×1080) and 1280H (1280×720); which are compatible with the industrial standard 1080p(1920×1080) and 720p(1920×1080).
The advantages of progressive scan: No image artifacts, No blurring, Higher vertical resolution, Higher quality images (Images are smoother are more detailed in progressive scan as they are refreshed at a faster frequency.)
Cable Runs:
The best quality choice for HD CVI video transmission is high quality RG6 or RG59. This cable is best for transmission up to 250 feet and after this the video signal may be little distorted but the difference is not easily noticable by human eye.
You can use CAT5 or CAT6 cable with the same video baluns which are generally used for analog CCTV cameras. This infrastructure does perform well, but the quality of the video is slightly degraded. It is still a dramatic increase in resolution over the analog CCTV camera resolution. Most people will never notice the difference in video quality. We estimate the degradation in quality to be around 5-10%.
We have tested prefabricate plug and play cables also. Again, the resolution is excellent, but the video quality is also slightly degraded. There is around the same 5-10% degradation, again barely noticeable to most people.
