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CCTV systems

HD-SDI CCTV EXPLAINED

There’s no question that growing popularity of HD TV and SKY HD equipment within the general population has increased consumer expectations.What they see on TV they expect to see the same quality or better from their CCTV system footage. Below are some of the key facts about HD-SDI CCTV

What is HD-SDI CCTV……..

HD-SDI stands for High Definition Serial Digital Interface, but most people call it by the abbreviation HD-SDI. In essence the main advantage over traditional analogue cctv systems is HD-SDI sends video in a digital uncompressed format to deliver staggering image quality.

The extra detail that can be seen from images using an HD-SDI camera can often lead to a criminal conviction whereas is most cases images from an ANALOGUE camera would not have captured sufficient quality to get a conviction.

Since many cctv installations already have existing co-ax cable installed, the upgrade path to High Definition CCTV will be less expensive by utilising the existing cable structure. Unlike IP-CCTV systems there is very little set up involved or need for extensive IT support, basically it is easy to fit.

Aside from the obvious advantage of broadcast quality images to help with clearer identification on recorded CCTV footage.HD-SDI also has a number of advantages over its alternatives.

HD-SDI works with standard RG59 co-ax cable allowing us to easily replace old ANALOGUE CCTV equipment and upgrade your existing system without re-cabling or modifying your existing cable structure and network configuration.

Using RG59 cabling means that an HD-SDI CCTV system isn’t reliant on the restrictions presented trying to transmit CCTV images over a network. It is a robust stand alone solution that doesn’t suffer from network interruptions caused by bandwidth issues or latency in processing signals or data. This results in smoother images with no unexpected lapses in recording

IP (Internet Protocol) CCTV EXPLAINED

Another high definition alternative to analogue is a Internet Protocol system mostly referred to as IP CCTV, it is popular for new installations as the cable structure can be very versatile. It can make use of the buildings existing IT network to transmit CCTV images from one location to another, or a separate network can be installed for the CCTV alone.

IP based systems work by turning images into data then transmitting that data over a network or internet connection. There are a lot more set up factors to consider when using IP CCTV systems including the huge bandwidth required for IP CCTV, each unit will need its own IP address and the installer cant stop the customer altering or tinkering with there own LAN after the installation.

Like HD-SDI the image quality is superb compared to ANALOGUE systems and because it uses the latest megapixel technology it has proven to supply far superior images that can be used to convict criminals.

Another benefit to IP systems is that the CCTV cameras can be powered over a POE (Power Over Ethernet) switch. So there is no need for external power supplies or need for extra mains power to be installed to accommodate the new CCTV.

IN CONCLUSION

Both systems have there pros and cons and every site installation has different factors to consider. One thing is certain with these systems is that the image quality is second to none and they are the future of HD CCTV!