Archive for April, 2016
AHD CCTV is an analogue, extremely high-definition, closed-circuit TV surveillance system that incorporates a coax cable in order to broadcast a sharp HD video from certain security cameras to DVRs. AHD works symbiotically with 720p and 1080p HD video resolutions. Importantly, you can use varying types of AHD CCTV cameras, dependent on what you need.
What type of cable do AHD cameras use?
AHD CCTV cameras are joined to DVRs as they use the same coaxial cable as older, more traditional CCTV systems – these are typically RG59 or RG6 coax cables. One of the main advantages of AHD systems over simpler HD-SDI, is that RG59 coax cables can be installed to run along longer lengths without degrading the quality of the image seen on the camera. From research, installers can use a RG69 coax cable up to an impressive distance of 800 feet for all AHD cameras. Alternatively, AHD cameras can also use UTP cable, which include video baluns; this means cable can be ran up to 320 metres (960 feet) with a CAT5 cable.
Will AHD replace analogue CCTV cameras?
Only time will tell if AHD will become more widely used then CCTV systems. CCTV technology is currently very stable and installing systems is very, very affordable. Interestingly, some people in the CCTV industry thought that analogue CCTV systems would have fallen out of favour years ago.
There is a great selection of CCTV systems available for you to view at http://www.cricklewoodelectronics.com/NEW-High-Definition-1.3-Megapixel-CCTV-Systems.html
In 2007 megapixel resolution cameras were catching attention. Despite the attention, a lot of people found that IP cameras were difficult to install and maintain; the pricing never came down either, so people lost interest, as the technology never justified the price-tag.
HD-SDI entered surveillance industry around 2010, despite being used to make films and HDTV for eons. Although people really like using HD-SDI cameras, the general acceptance of them, as a concept, has been severely limited. Many say that HD-SDI cameras are fundamentally flawed because you cannot run a coax cable long distances; plus, there is no assistance for video baluns. Despite all these drawbacks, the picture quality of HD-SDI is not matched by anything else on the market.
It might not have made significant headlines, however previously this month a story broke that shows how 3D printing is making a big effect in the medical market. A sea turtle has beak changed with a 3D printed prosthetic, as it has been hit by a motor boat. Offering the part is not turned down; the turtle might even be permitted to go back to the sea.
Advantages of 3d printing in healthcare
3D printing has prospective health advantages to human beings too, numerous of which we are presently finding. 3D printers are likewise being used to offer prosthetics at a much lower expense than formerly possible. For young kids who can outgrow their prosthetics in simply a couple of months, standard approaches of producing replacement limbs are not useful. By contrast, cheap 3d printers can be used to produce adjustable prosthetic hands for a couple of hundred dollars, making them easily accessible to a much bigger percentage of patients.
Research is presently being performed into the possibility of 3D printers having the ability to duplicate the complex organs that bear our bodies. Scientists at Princeton University have effectively printed a prototype external ear from silver nanop articles, human cells, and hydrogel. Tailor made bones and joints can likewise be produced.
The capability to produce customized medical options is one of the primary benefits of 3D printing. Unique parts are typically expensive and time consuming to produce, however when printers are integrated with the 3D imaging methods already being used by the health market, this ends up being a more viable option.
Thinking about the concept of 3D printing a human organ still seems like it comes from the world of sci-fi, the innovation is making excellent strides. In 2014, printed body parts comprised sales in excess of $500 million.
The innovation can likewise be used in less evident ways to help the medical market. Researchers have found that printing cells allows them to perform tests in a more organized environment, which permits more efficient testing of treatments.
Here, we examine some of the benefits of SIM (Subscriber Identity Module) card deals, in comparison to contracts with handsets supplied.
A standard contract obliges the user to pay a monthly fee, including payments towards the handset as well as airtime and a mobile data plan. When this contract finishes, there are often special promotions to persuade customers to extend for a further term, usually with a new handset. Users who opt for this do not really receive a free handset – rather, the supplier recoups its cost over time. However, is this the best choice?
Sometimes, the numerous different contract options do not make direct comparisons easy. Nonetheless, it could well be worth checking whether you are paying over the odds, with some arithmetic around the total cost of ownership (TCO). A panel of mobile phone experts recently came to some interesting conclusions, while the consumer association Which? ran an ‘Unlock better mobile deals’ campaign and found that mobile users often pay more than they need to – sometimes through inertia or forgetfulness. In fact, many operators do not remind their customers that they have fulfilled their contractual obligations.
Alternatively, customers may choose to purchase a handset that is not locked to a particular network. These handsets can then be used without being restricted (usually in the phone software) to one particular supplier. The choice is then between pre-pay (PAYG, or pay as you go) or a SIM-only contract. The latter frequently offer better tariffs than pay as you go, as well as avoiding low balance messages – or forgetting to top up and then running out of credit in the middle of a call. The regular monthly invoices are also convenient for business expenses, with no need to request copies.
Comparing the TCO of current twenty-four-month contract handsets with 2GB monthly data, many offer unlimited SMS texts and UK calls. An upfront payment adds to monthly costs typically between £21 and £49, totalling over £1,000 or as much as £1,350 (over two years) for some of the more recently introduced models.
Alternatively, finding the right SIM only deal can easily bring total savings of around £300 on the above figures over two years. Any SIM can be installed – especially useful when travelling unless roaming calls are free. In addition, these SIM contracts are often for just twelve months, offering greater flexibility.
In summary, buying a smartphone outright and choosing a SIM-only contract (or even PAYG) involves some initial outlay, but less over the long term. The savings are especially noticeable on premium and upmarket handset models. It also offers the flexibility of choosing the data package which best suits you – such as three’s ‘all you can eat’ data package for heavy internet users.
Finally, if you currently have a handset on a contract, you may wish to check the details and consider setting a diary note to review your supplier when the term expires, instead of leaving the monthly charging at a higher rate for longer than is necessary.