Revolutionizing Manufacturing

7g“3D printers”, the term defines itself. The first 3D printer was introduced in 1980 and at that time it was known as the rapid prototyping apparatus. It was named so, as the process was relatively fast and cost effective for creating prototypes. In 1986 the complete patent for the 3D printers was issued to the stereo-lithography apparatus by Chuck Hulls, who later on founded the 3D systems cooperation.

In simple words, a 3D printer creates a three dimensional object by using 3D models of the object to be formed & by using different types of raw material depending upon the type of object to be prepared.

The most common type of 3D printing technique is called stereo-lithography which uses a vat (container) of photo-polymer resin. During the process of manufacturing the liquid polymer is exposed to light, where the UV laser light draws the cross section of material by hardening it, layer by layer and repeats the same process to forma complete 3D structure or a prototype.

The designing process is called bottom up, i.e. pulling the object out of resin. This creates some space for the uncured resin at the bottom of the container which then leaves some scope for the formation of the next layer of the prototype.

Along with stereo-lithography many other 3D printing techniques are incorporated in the field of 3D printing nowadays.

Application Areas:

3D printing can be put to use in various areas such as Food, Manufacturing, Aerospace, Oil and Gas, Pharmaceuticals, Footwear, Medical, Electronics, Toys etc. Since a 3D printer can create three dimensional objects, it can be used in any product manufacturing area.

Industrial Impact:

3D printing might trigger another industrial revolution as it will tremendously affect the manufacturing world, both technically and economically. The concept of ‘Distributed 3D printing manufacturing’ also offers the promise of a lower working capital as it eliminates the need for large stocks of raw materials, semi-manufactured parts and labor costs.

Manufacturing near the point of demand makes the supply chain and logistics very simple and much more efficient, only the raw material needs to be transported. Also the waste product is nearly zero so there is no harmful impact on the environment which has become a great cause of concern in today’s world.

Future Advancement:

Although many advances have already been made in the 3D printing domain and it also seems to be a very advanced piece of technology, but soon 3D printing will become an obsolete concept and would then get replaced by a relatively new concept that is 4D printing.

Although there is very little that the inventors have achieved in the field of programmable matter and 4D printing, a lot of research & innovation is getting carried out. One of the patent documents, US 20150158244 A1, explains the concept of 4D printing in a thorough manner.

4D printing will become the continuation of 3D printing in which an additional ‘time’ dimension will get added in combination with the other 3 dimensions, which are already present and getting used in 3D printing.

The main concept of this technology is that the object which is printed in 3D is capable of transforming into different shapes with time and so, this way, it gets its predetermined shape.

After all many researches have been done and are still happening in the field of 3D printing due to which we can say that 3D printing is a big step in revolutionizing the Manufacturing world.

Why 3D Printing Is The In Thing

53D printing technology is trending and there is a burst of peoplez getting 3D printers for their personal use of business use. Using this technology shapes you can grow shapes layer by layer without going through the tedious and long manufacturing process. It is amongst the most empowering process that entrepreneurs can get and if you are creative enough, you can become your own boss by investing in a 3D printer and pushing your creativity. But what really makes this kind of printing so popular today?

1. This printing technology allows rapid testing of ideas. This is quite beneficial to engineers, architects and eve entrepreneur because it saves them time they would have otherwise used testing the same ideas using the traditional manufacturing process. 3D printing allows the quick development of prototypes to assist in the execution of ideas.

2. It allows you to stay ahead of competition as a business. This is because of the quick turnaround when working on ideas. You will close in on your desired results and at the same time manage to lower the operating costs. 3D printing makes it possible for you to move in fast and beat competition so you are able to stay afloat as a business.

3. This kind of printing saves money because the prototyping costs are not as high as when going the traditional manufacturing process. The materials needed to make a part are affordable and it does not take anything more to get down working on and producing your prototype. When you choose 3D printing, then you can save up for the actual manufacturing process when you are happy with the prototype. A few dollars is all you need for your prototype compared to the hundreds of dollars traditional prototyping would require.

4. It offers the much needed flexibility in manufacturing. This is because with 3D printers you can perform multiple iterations to your design and also test out the different ideas you have without putting your company account at any sort of risk. All this you can do and at the end of the day still get professional and durable parts. You get to use real PLA and ABS materials to get real parts that you can actually test and fit. They include living hinges, snap fits, clearance fits and dove tails among others.

5. It makes teaching and learning so much easier. This is because teachers are able to physically show what they mean using an inexpensive functional model. The same goes to students who are able to actively think about the things they learn in the classroom by physically putting them together. Iterative designs are able to be achieved because the students get to know about changes that need to be made to improve their designs.

6. 3D printing reduces the costs of mistakes. When designing something, a small error can cost you heftily but when using a 3D printer, you have the freedom to learn by trial and error without any worries. You do not have to worry about costs even when you make mistakes in the design.

5 Ways Of Improving The Quality Of Your 3D Prints

63D printers allow you to see all the angles of your product. While 3D printers are known to give high quality prints, this isn’t always the case. The cool thing is that you can improve the printing quality of your machine if you aren’t satisfied with it. Here is a guide on how to go about it:

Get a high quality machine

In most cases the poor quality of your prints is due to a poor, cheap printing machine. There is nothing that you can do to improve the quality of the prints other than replacing your current machine with a new one. Older machines also give poor quality prints. If you aren’t sure of whether you should replace your machine, ask a professional to help you out.

Center the build plate

The center area of the build plate maintains the set build temperature while the edges of the plate get cold. The center is also wrapped and accurately leveled. Since the edges of the plates get cold with time, prints made at the edges are usually warped. To avoid this you should place the printing parts at the center of the build plate.

Install pads

If you have been using 3D printers, you must know that warping is one of the major problems with 3D printing. When you are able to prevent it, you will greatly improve the quality of your prints. One of the ways of combating warping is adding little pads on the areas where warping occurs. You can use any size and shape of pads, but experts recommend that you use pads that are at least 100mm in diameter and 1-2 layers thick.

Make use of ABS glue

ABS glue has many applications including:

  • Improving the surface finish of your prints. You only need to print out your item and dip it into the glue
  • Mending cracks on your items. This is when you don’t want to reprint or redesign your material
  • Bonding small parts together in order to create intricate or larger parts.

To prepare the glue you need to mix ABS and acetone. There is no perfect ratio at which you should mix the two. Use less ABS to make a thinner solution. For a thicker solution use more ABS. Thicker solution is important when you want to bond or mend parts.

Tighten the drive belt

When the printing machine has worked for sometime, it’s common for the drive belt to get loose. This results to the dimensions of your prints getting smaller than they should. The sides of the round object also tend to be flat.

To fix this problem and improve the quality of the prints you should tighten the drive belt. All you need to do is find a puller and fix the belts. If you are unable to tighten it, hire a professional to help you out.

How To Select A Trustworthy Online Computer Repair Tech Support Service

4Most of the times customers try to know the important points about the matter so as they can deem to have. Or even if you have purchased, the only striking part is the repairing or the servicing of it. Supposedly, as you are working on your PC at midnight and it halts, what will you do? Are you going to call any technician to tell you how to repair? Over there, we will suggest you online computer tech support. They only need the ones who are talented, experts and can effort on their system efficiently.

Generally, users are less aware of such things. They just call or take the system to the repair shop. In that case, choosing the online repairing would give lots of benefits. Customers can even think that who is trustworthy, which should be chosen?

Mentioning below some important factors that can make your selection easy:

Certified company: Before choosing anyone for the online support, a user must keep an eye that they are certified or not. Check their work and see since how long they are working in this field.

The quality of support: You must notice if they are well working or not. They should be able to handle all the software, hardware and such problems. The work they do must be of good quality and should be able to grip everything.

Direct access: The dealing of the company must be direct with the customer as they should not linger on the work. As the user asks for any solution, they must be ready to tell them without saying to wait for a long time.

Mode of support: Since the errors are uncertain, they can come up at any time. Therefore, a user must check the points where they contact the technical team. They must be contacted through a phone call, emails along with online support. One can easily chat for their problem. To get in reach with the team, tech support number should be there for 24*7.

Experienced team: Don’t go with the one who offers you cheap deals. Go for the team who is qualified and must be able to tell you any solution. The team must be experienced and should have a good customer base.

Offered specialities: With the problems they solve for you, the well-talented team must have some specialities. They must offer you some add-on things to help you in a better way.

These are some of the main points which customers must think of. Consider these surely before you prefer any of the technical team. There are many of the companies offering online computer tech support for your system.

Make it sure that you are known to all the things beforehand. There are numbers of great technical teams assisting for all the PC issues and guidance. Whenever a user is in any problem, they can reach them through remote support and they will assist them without any doubt.

The Benefits Of Preventative Maintenance For Your Technology

2wI see on a daily basis the benefits of preventative maintenance and what happens to those who make the costly mistake of thinking they are saving money by choosing not to purchase a maintenance agreement on their technology investment.

Although it may seem less expensive each month to only call your technology company when you have a problem, over the long term this is most certainly not the case. Doing so can increase your IT support costs exponentially because small problems can quickly grow and cause catastrophic effects across your network resulting in large IT support and repair costs.

These unexpected costs will also likely come at the worst time possible because that’s just the way it goes. Having smaller regular maintenance payments you expect and budget for is a much better plan for all.

In addition you need to calculate the cost of downtime for Business. What does an hour, a day, or even a week cost your company in terms of lost revenue and damaged relationships with your clients?

Let’s take for example your network server. If you do not have regular maintenance performed on your server such as Microsoft security update installation, Virus definition updates, reviewing error and event logs and very important… checking to make sure your backups are working and can be restored from, then you can get into trouble very fast.

I’m sure that most of you reading this have at some point in your life lost a file you could not recover. Imagine for a moment you lose all your business documents for your entire company. You may think to yourself “No problem, I’ve got a backup” only to find out that because nobody has actually been testing your backup on a regular basis, they don’t work and haven’t backed up in over a year.

On top of that because nobody has been doing any maintenance or monitoring of your server, nobody has noticed that one of the drives on your server has failed so there is no longer any redundancy and one more drive failure (which could happen at any moment) means EVERYTHING is gone.

I have just recently seen a company who shall remain nameless get infected with Cryptolocker. They felt confident that their backups would save them so went ahead and deleted all the encrypted files. When attempting to restore the data, they quickly and frightfully realized that their backups had not been functioning since 2012. Think of the cost to this company!

I’m sure I don’t need to finish this story for you to understand how detrimental this scenario could be. Bottom line is a monthly preventative maintenance plan with a trusted IT company could have saved their entire business by catching these issues before they ever caused any downtime or financial loss.

If you are a business owner who thinks that you’re saving money by saying no to regular maintenance, take it from someone who works with businesses every day. You need to change your mindset and realize the potentially catastrophic effects making the decision to run your business without preventative maintenance for your technology can have.

Everything You Need To Know About Surge Protectors

1If you have a computer, tablet or any other valuable electric device in your home you need to have a surge protector. This is a device that protects your electronics from voltage spikes. Traditionally, voltage ranges between 110-120 volts. When there are problems, the voltage increases up to 170 volts putting your devices at the risk of getting damaged.

Voltage spikes are brought about by many factors including: tripped circuit breakers, lightening strikes, downed power lines, malfunctions at the power company, and on/off cycles of large appliances and tools.

How the surge protector works

The protectors have a simple working formula-they short-circuit power surges and redirect them to the electrical ground. The devices have the capability of working up to 200 volts. Extremely high spikes brought about by lightening can damage the protectors; therefore, you should protect them from damage by unplugging them when lightening is too strong.

Factors to consider when buying surge protectors

For you to buy the right protector you need to consider these factors:

Type of protector: There are four types of protectors in the market that you can go for: battery backup, wall mount, whole house and surge protector strip. Each type has its pros and cons. You should research and find the one that is right for your needs.

Number of ports: The number of ports in the protector that you choose should be informed by the devices that you are looking to protect. If you are looking for a protector for your home appliances, you can go for a protector with many ports, but if you are looking for a travel protector, go for a protector with a few ports to make it easy for you to travel with it.

Absorption rating and clamping voltage: Absorption rating is the amount of energy that the protector can absorb before it fails. The rating is usually given in joules. For ideal results, go for a device with absorption rating of 700 joules or higher.

Clamping voltage is the voltage that triggers the protector. Go with a device with a lower clamping voltage. The voltage can be 400 volts or less.

Certification: To have peace of mind that your devices are fully protected go for a protector that is certified by Underwriter’s Laboratories. The protector should also meet UL 1449 standards.

Warranty: Even the best brands of surge protectors fail. To avoid wasting money, go for a protector that has a warranty. Before you make the purchase, understand how to file a warranty claim in the event the protector fails.

RFID And Pharmaceuticals

3Pharmaceuticals are big business and used by hundreds of thousands of people every day. It shouldn’t surprise us then that they have many rules and regulations that govern the manufacture of them. For our purposes, however it is how the technology of Radio Frequency Identification or RFID helps to streamline the process and get needed drugs to patients not only in a timely manner but also safely too.

RFID works with just three things which are tags, readers and easy to use software. Items can be tagged individually or by the crate, barrel or box full, and readers can be set up at any point along the manufacture process and beyond. Everything can be easily tracked via the software and a laptop or smartphone.

Pharmaceuticals are made from many different ingredients that are expertly blended together to make a certain pill or liquid. These pills are created in special laboratories and then shipped to various drug stores, doctor’s offices and hospitals around the country and, in some cases, the world.

What happens with RFID is that compounds are tagged before they head to the lab. No, granules cannot be tagged, but batches of it can be, so once it gets to the lab, the head technician knows exactly which batch of each product they are using in which pills. Tags can be read with handheld devices or as they travel through static readers in a warehouse or holding room. As each batch of a specific pharmaceutical is finished, that too gets a special tag, specifying when it was made, by whom it was made, what temperature it needs to be stored at, where it is headed and many other particulars which can all be brought up on that laptop whenever needed.

These tags stay with the product until such times as they get to their final destination, and can be read however many times in transit as needed, this lessens the threat of theft and loss, and can easily be tracked if it does happen to go missing at any point. Because many drugs are dangerous if taken unnecessarily or make for great money on the black market, security is of the utmost importance when these drugs are being shipped from point A to point B.

Pharmaceuticals are big business, but they are also a wonderful invention that have saved many lives over the years and made other lives that much better. Where would we be without them, or RFID to keep them safe?

What Are the Advantages of Using Cloud Migration Services

7Many companies today around the world are looking to switch to cloud based solutions for their businesses. These can include switching to office tools such as Google Apps or Office 365, or instead adopting the use of software such as Xero and Unleashed, which fulfil entirely different purposes altogether.

Although these are some of the most popular cloud solutions, more and more options are appearing on the market on a regular basis, which can be considered a testament to the success of cloud as a modern day software solution for business.

With that said, switching over to cloud based solutions from traditional ones can be a stressful and confusing business. It is for this very reason that more and more people are looking for independent service providers and IT experts to help them make the move. Here are some of the main advantages of seeking out professional help in this instance.

The first benefit of using professional Office 365 or Google for work migration services is that this will take the effort and stress of the whole endeavour out of the hands of business owners who are not sure how to effectively manage the entire operation themselves.

In the case of larger businesses, there are often IT departments which are tasked with carrying out these kinds of improvements and updates on a regular basis. Due to budget and manpower restrictions affecting smaller companies, it is often a great idea to call in an expert who truly knows what he or she is doing.

As many people will often recount, switching to cloud based services seems relatively simple on paper, yet it can be long, time-consuming and even highly confusing if you are not very technically-proficient or are concerned about making a major error. For this reason, Office 36 and Google for work migration services have become very popular.

The advantage is basically that dangerous mistakes will be avoided with a full and carefully thought-out plan put into place by the professional in question, and it will not take up any of the business owner’s time. No mistakes mixed with efficiency will mean that the business will have a smooth transition into the use of cloud solutions.

The next important point to make is that hiring a professional to complete your migration means that your company will be able to incorporate several solutions at once, not only limiting itself to an Office 365 or Google Apps migration.

In many cases, businesses benefit from integrating several different types of cloud solution into their business, and a professional company will be able to help plan things accurately and strategically to make sure that this is handled carefully, thoughtfully and efficiently in order for there to be minimum disruption to business.

Furthermore as well as providing Xero, Unleashed or Google for work migration services, it is also possible for these professionals to carefully analyse each company’s needs before carrying out a migration. This is important, as for those people who are not experts in the area can find it difficult to determine the right product or solution for them.

Instead, experts will be able to use their combined knowledge of different cloud software together with their experience to fashion a tailored solution for each and every client. This will ultimately lead to much better results and a business with a fully integrated cloud solution that works like clockwork.

Although it is a wise move for many companies to considered switching to cloud solutions for their business, it is not always so wise to go it alone. Instead, it is worth finding a service provider who will help you make the switch, as this can lead to great efficiency and business success in both the short term and the long term.

6 Interesting Things You Should Know About Fiber Optic Cables

8While fiber optic cables have been around for long, few people know about it. Here are 6 things that you should know about them:

They have a solid history

Although, many people started hearing of these cables in the 1990’s they have been there since 1870’s. Just like any other technology, the cables have been growing and improving everyday and they will continue being made better.

They are green

To protect the environment, companies have been coming up with harmless products. Fiber optic cables are one of the harmless products that consume just minimal amounts of light to transfer data from one place to another. Due to the low energy required, low levels of carbon dioxide are released thus the environment is protected. The low energy also means that the cost of running the cables is low which saves money to network owners. The users also have a great experience.

The cable uses light

Most of the data cables known to mankind use power to transfer data, but this isn’t the case with fiber optics. The units use light thus there is no heat involved. Absence of heat means that the cable isn’t a fire hazard; therefore, you don’t have to shy away from installing it in your home or office.

They transfer data fast

Due to their increased capacity, the units have been shown to transmit data much faster compared to their traditional counterparts. Currently, the units have the ability of transmitting up to 16 terabits of data in one second over a 7,000km distance. The fast nature of the units and their high capacities translates to fewer connections and great experience to both the network owner and consumer.

They have a wide range of applications

If you ask many people, they will tell you that fiber optic cables are only used in transferring computer data. While the units are heavily used in this application, they are also used in other areas such as: art, signs, imaging optics, spectroscopy, gun sights and artificial Christmas trees.

They are weather resistant

Since the units use light instead of electricity like the traditional units, they aren’t affected by changes in rain, temperature, cold and other weather conditions.

Conclusion

These are 6 things that you should know about fiber optic cables. To have a great experience, ensure that you use cables from a reputable manufacturer. For the cable to continue working effectively, clean it regularly.

We specialize in manufacturing a wide range of fiber optic machines such as SZ stranding line. We also have Secondary coating line and many other tools. Visit the given links to know more about us.

How We Can Choose Display Interface for Video Surveillance

0Introduction

Video interfaces connect the monitor to the Image decoding device. Concerns over image quality and video protection has led to significant changes in display interface technology gradually. Although the VGA interface is still used in PCs, the future is moving to digital interfaces. Various methods including analog connector, hybrid digital plus analog interfaces and several digital interfaces have been developed up to now. However, there is some overlap in the features of display interfaces. We study several practical analog and digital video interfaces.

Analog display interfaces

S-video

S-video, standing for Separate Video, transmits video signals over a cable by dividing into two separate signals: one for color and another for brightness. Due to this separation, sharper and higher quality images than composite video can be achieved. S-video does not carry audio, so it commonly run with red and white RCA audio cables.

Component video

This video interface is superior over both composite and S-video. Because its three cables better preserve the various elements of the video signal including brightness and color, resulting in enhanced picture quality. Component video uses three RCA connections, Red, Blue and Green to send video signals. It carries visual data only, meaning that audio cables are still required. Hence, it is usually paired with stereo (red and white) RCA audio connections.

VGA

VGA or Video Graphics Array is the most popular video connection between computers and monitors. It is used on computer video cards, projectors and set top boxes. A standard VGA connection has 15 pins and supports display resolution of 640*480 pixels, while enhanced version SVGA is allowed for resolution of 1024*768. It is worth mentioning that the maximum resolution is limited by the connector bandwidth and cable quality and length.

In the VGA connector, due to tiny little pins into a small connector, building small coaxial cables is hard.

Digital display interfaces

DVI

Digital Video Interface (DVI) has been designed as a replacement for VGA (analog interface). However, in some cases DVI still supports analog displays. In fact, DVI is the only standard which can carry both analog and digital signals on one interface. If the display is analog, the DVI connection will convert the digital signal to an analog signal, otherwise no conversion will be necessary. It is worth mentioning that, the analog video bandwidth of DVI is higher than VGA, thus higher resolution can be supported compared to VGA. So, it can be applied by high resolution displays such as UXGA and HDTV.

DVI cables or ports with fewer pins are designed for lower resolution devices. In order to support maximum resolution, the DVI port should contain all the pins. Since DVI does not support High-bandwidth Digital Content Protection (HDCP) encryption by default, by using hardware which only includes DVI ports, the video protection is not guaranteed. This is the biggest drawback of DVI. Since HDCP protects video from illegal copying, this feature is very critical for video surveillance systems.

DVI has several variants: DVI-D (digital only), DVI-A (analog only) and integrated DVI-I which carries both digital and analog video. DVI connections are popular on computer video cards, monitors and projectors.

HDMI

High-Definition Multimedia Interface (HDMI) transmits uncompressed digital HD video and audio data in a single cable, while other connections require separate cables for audio and video. For instance, a component cable connection uses three cables for video and two for audio, resulting in five cables totally. While using HDMI, the uncompressed audio and video information can be transmitted using one cable, thus cable clutter is eliminated greatly.

Since HDMI is a digital connection, it is more robust to interference and noise problem compared to analog connections. Since most processes are the digital such as DVD players, Blue-ray players and game consoles, so by using HDMI for these consumers the analog to digital conversion will be eliminated. So, it leads to better quality picture and sound compared to other connections. Also HDMI supports HDCP, meaning that it is practical for video surveillance systems. HDMI connection is the most popular display interface, found on every TV, AV receiver, Blue-ray disk player, DVR, laptops and digital cameras, because by using HDMI, there is no need to buy separate audio and video cables. Therefore, fewer cables and connections are used.

DisplayPort

DisplayPort as a standard port to connect PCs, laptops, and other computers to video monitors has been called ultimate digital connection. It is a high definition AV connection which transmits audio and video data over a single cable with a locking connector. DisplayPort is a simple but high bandwidth interface which provides true digital images and clear sounds. It can even supply power.

One of the advantages of DisplayPort is that it works with older technology, as by using simple adapters, it is compatible with VGA, DVI even HDMI. DisplayPort enables high display performance, robustness, versatility, highest degree of system integration, and great interoperability among various device types. DisplayPort was originally developed as the next generation personal computer display interface and is now available on a wide range of tablets, notebooks, desktop computers and monitors. It is included on all newer Macs and many Dell, HP, and Lenovo computers and is also available on video graphics cards. DisplayPort can be used for consumer electronics but is not common.

DisplayPort is hot-pluggable, meaning that connections can be reconfigured without the need to restart the device. Also DisplayPort supports DPCP (DisplayPort Content Protection) and HDCP (High bandwidth Digital Content Protection). These two prevent illegal copying, so they are very critical in video security.

Comparing HDMI and DisplayPort

HDMI and DisplayPort are modern serial interfaces to transmit digital video over cables from one device to another. They are replacement for analog interfaces like VGA and S-video. DisplayPort is a newer connector can be found on Apple’s iMac desktops. It is compatible with HDMI signals, thus product interoperability is achieved.

The HDMI and DisplayPort both carry audio and video data on a same cable. They also support High-bandwidth Digital Content Protection (HDCP) to encrypt copyrighted video and audio data for the newest HD content. Therefore, data is protected from being played or copied during transmission over the interface.

Transmitting video and audio in high definition format (HD) must be conducted through interfaces with high data transfer rate. HDMI and DisplayPort are both high-speed digital interfaces, but they differ in several aspects. HDMI is mainly used for consumer electronics equipment, while DisplayPort is primarily developed for computer and peripheral video connections. In the following some of the main differences between these two, are studied.

Type of connector:

There are three main types of HDMI ports, each with 19 pins. The standard size (Type A) commonly found on TVs, projectors, set-top boxes and laptops. Smaller HDMI (Type B) is called mini- and mainly found on some laptops and tablets. The smallest is micro-HDMI (Type C) found on tablets and smartphones.

DisplayPort is available in two different types with 20 pins. One of them is the full-size version and the other is smaller called Mini DisplayPort which is used in Apple laptops.

Supporting the quantity of monitors (video and audio stream):

In video surveillance, using more than one display is preferable. Also, many gamers use two or more monitors simultaneously. HDMI can handle single video stream and a single audio stream, so it can support only one display at a time.

On the other hand, DiaplayPort can connect to multiple monitors up to four with a 1920-by-1200 pixel resolution. By using multiple DisplayPort interfaces, connecting as many as six display to one output is feasible.

Cable length:

The maximum cable length supported by each interface is an important subject. Since high data rate signals will be degraded over lengths, so cables should be kept short. A maximum HDMI cable length has not been specified, and a wide range of lengths is available, but manufacturers limit them to 15 meters (about 49 feet). For instance, by HDMI cables as long as 50 feet, the quality of video data has been degraded. In order to cover a long distance, a signal booster or an active cable to amplify the signal might be needed.

For DisplayPort, 3840- by- 2160 pixels (4K) video over a length up to 2 meters by using a passive cable can be achieved. Also, running a passive cable up to 15 meters is possible, but resolution will be limited to 1080p (full-HD), as defined by the standard.

Ethernet channel:

DisplayPort does not support Ethernet data and the standard does not have an audio return channel, while by using the latest version of HDMI, 100 Mbps HDMI Ethernet Channel (HEC) can be implemented. HEC is used primarily for audio control.

The Ethernet channel can be used to provide an Internet connection between devices, especially when HDMI devices are used for streaming video or other content from the Internet.

Advantages of HDMI in video surveillance

HDMI cables have several advantages that make it superior over some interfaces like DVI and component video, especially in video surveillance systems.

HDMI includes all components of both video and audio data in one cable, so there is no need for extra cables. Because, everything is contained in one compact cable package. HDMI transmission line could be used instead of at most 13 similar transmission lines, thus the problem of cable clutter will be solved effectively.

On the other hand, like many other modern data transmission cables, an HDMI cable is composed of a series of twisted pairs. It has been proved that this cable manufacturing technology, is superior over other cables even huge coaxial cables for reducing noise and interferences. Also HDMI guarantees HDCP, thus video information is protected from copying during transmission, confirming its benefit in video surveillance.

Why we should consider DisplayPort in addition to HDMI in video surveillance?

In video streaming, choosing the types of video connection to stream the content to the display is an important issue. Over the years, delivering this content through HDMI, DVI, and VGA cables has been the most popular method.

In recent years, a new technology called DisplayPort has been developed. It has slowly been adopted by motherboard and displays. By the newest version DisplayPort 1.2, achieving to 4K60p resolution (3840×2160@60Hz) is possible, while HDMI only provides this resolution at half the frame rate or less.

The most important advantage of DisplayPort 1.2 over the other standards is a Multi-Stream Transport (MST) technology, in which DisplayPort can transfer multiple video streams from one video output by using 21.6 Gbps bandwidth. Therefore, achieving up to 4 displays with 1080p resolution from a single DisplayPort output is possible, confirming the benefit of DisplayPort for video surveillance.

Conclusion

The main digital connectors used on computers and display devices are DVI and HDMI. DisplayPort is a newer connector mainly designed to replace VGA and DVI ports. The first choice to connect a device to display is HDMI which is commonly used in the most NVRs. The cables are cheap and it also carries audio. On the other hand, HDMI has some limitations and is not a perfect choice for all purposes. In most cases HDMI is fine, but for really high resolutions and frame rates, other options might be taken into consideration.

Since DisplayPort can support multiple displays and also due to its ability to connect to nearly any other type of monitor with an inexpensive adapter, getting a video recorder device which offers DisplayPort in addition to HDMI, is an admirable choice in video surveillance industry.