Analogue is very undead

CCTV Handbook 2015 Surveillance

As much as the IP vendors would have you believe that analogue surveillance is dead and gone, this technology refuses to go quietly. It’s true that we’re seeing an increasing amount of IP technology sold every year and a decrease in the number of analogue sales, but dead is an exaggeration.

To show just how alive it is, the analogue vendors have developed an HD version of the technology that offers high-resolution images over your old analogue infrastructure. Actually, and unfortunately for the industry, there are a number of HD analogue (or HDCCTV) technologies (or standards) available at the moment, offering different solutions for analogue HD needs. This is an unfortunate state of affairs because there is at present no consolidated offering to analogue users that will get them upgraded to HD – but that may change.

We asked three companies significantly invested in HDCCTV to tell us about the latest happenings in this field, and about what technology is available.

Image courtesy of HiTek Security.
Image courtesy of HiTek Security.

Analogue HD standards

Tomer Clyde Elhadad of HiTek Security explains that there are three major HD standards available: HDCVI, HDTVI and AHD, all of which provide similar solutions quality wise. The main difference is price. “CVI is the more expensive of the three options. TVI and AHD will lead the market and at the moment we can see the 720p solution already available. In the near future we will see the 1080p solution on the market.”

HDCVI, driven by Dahua, already provides 720p as well as 1080p resolution to its users, but to date the three standards are not interoperable.

One of the first questions one has to ask after a couple of years of different companies promoting different analogue HD formats, is how has the market responded? Have existing analogue clients made the move to HD and is it as smooth and hassle-free as traditional analogue video?

John Li, CVI product manager at Dahua Technology, is positive about the new technology, saying it is making ground in the market. “HDCCTV stands out due to its non-latency HD transmission,” she says. For example, for applications such as casinos, where there are very strict rules about what and how surveillance must perform, HDCCTV is gaining traction.

Elvey’s Ingo Mutinelli agrees, noting HDCCTV has made a positive impact on the market especially in those areas where HD quality is requested, but IP costs or network limitations are prohibitive. “Because analogue is also easier to set up, it is attractive to many installers that aren’t quite up to speed on IP as yet.”

Elhadad also sees more interest, but he mentions one of the newer HDCCTV formats, AHD is becoming popular because the price is almost similar to analogue, it makes it an easy decision for the installer.

Simpler upgrading

One of the selling points of HD analogue is that it uses your old infrastructure, making it easier to just get new cameras and DVRs and plug them in – hopefully. Of course, different formats have different requirements, as discussed in another article in this section of the CCTV Handbook 2015.

Li says Dahua’s HDCVI technology does in fact provide for an easy upgrade as it simply requires changing the camera and DVRs, the coaxial cable can be preserved for further using. Elhadad says the same of AHD: “Once you have an existing analogue system, you will have to change your DVR recorder with an AHD recorder, and your cameras with a AHD cameras in order to upgrade, the rest of the infrastructure stays the same (cable, PSU, etc).”

Elhadad says an important advantage AHD has is the fact that the DVR can support AHD and analogue on the same unit, meaning you can connect analogue cameras together with AHD cameras. Moreover, the Provision ISR AHD cameras can be AHD or analogue, simply by pressing a button on the cameras.

“It’s as simple as plug-and-play,” adds Mutinelli. “If you are using the same make HDVR and HDCCTV cameras, it’s as simple as setting up a conventional analogue system. If you have an existing site, you need to change the old DVR to the HDVR, but can use the existing cameras that don’t need to be of HD quality and replace only those that you do need higher quality from with HDCCTV cameras.”

Elvey provides the Dahua HDCVI, now in its second generation of cameras that offer varifocal and motorised lenses. Li adds that in addition to HDCVI, for which the company offers cameras, tribrid DVRs (compatible with IP, analogue, HDCVI signals) to transmitters and other accessories, Dahua also provides traditional analogue solutions, such as its HDIS portfolio with more than 700TVL.

Provision ISR has decided to go with AHD technology, according to Elhadad, and will provide two options for clients, the ECO AHD and PRO AHD 2 1.3 MP cameras series aimed at the budget client. For the more professional installer, it provides the PRO Series cameras (with Sony chipset), with a full range of cameras, including a DVR range of up to 16 channels.

It is therefore clear that analogue users have a choice and analogue installers will still be in business for some time. Eventually the benefits of IP will erode the usefulness of analogue, but that is not something to lose sleep about just yet.

For more information contact: Elvey Security Technologies, +27 (0) 11 401 6700, [email protected], www.elvey.co.za; Dahua, +86 571 8768 8883, [email protected]; HiTek Security Distributors, +27 (0)21 946 3344, [email protected], www.hiteksecurity.net



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