How Far Does Wireless DVI Extender Signal Reach

Linking computers and other devices to remote displays has become a necessary feature in many environments. Wireless DVI extender removes the cable tethering once required for remote video connections. Previously, DVI splitters were used in conjunction with wired distribution amplifiers to allow 720p and 1080p video streaming to reach distances of up to 150 feet via DVI cables. Standard video cables are no longer required; extenders are now available to transmit video connections for even greater distances over CAT 5/5e/6 cables.

Wireless DVI extenders are connected to the video source by attaching a wired video cable to a transmitter. At the remote end, a wireless receiver picks up the signal from the transmitter and connects to a television or display through another wired video cable. When connecting the extension kit, it is important to power on the transmitter first. If the receiver is powered on prior to the transmitter a proper connection may not be established. A power adapter will be supplied with the transmitter and receiver, and both will need to be connected properly for the extender to function.

Most wireless DVI extender will reach up to 100 feet in optimal situations, but the signal distance is impacted greatly when passing through concrete, brick, and steel. A good rule of thumb is to subtract 25 feet from the maximum distance for each brick or concrete wall your signal needs to pass through, and roughly 50 feet for steel reinforced walls or partitions. Wireless signals transmitting through plaster, gypsum board, fiberglass, and wood are generally not affected. 

Placing the wireless DVI transmitter near the center of your facility will allow for better connectivity throughout the entire location. Unlike wired extenders, wireless models do not support distribution amplifiers, which can increase the signal length by an extra 200 feet. Wireless DVI extension kits should be kept under 100 feet to maintain adequate frame rate and audio clarity. The presence of video artifact or audio distortion at the remote display indicates a need to reduce the distance from the transmitter to the receiver. 

Placing your DVI receiver near a television or display can cause interference. A six to eight inch clearance between the television or display will help prevent wireless interference. Some devices are more sensitive than others, and some trial and error may be necessary to determine the optimal distance from your display to the receiver.

Wireless interface devices have improved vastly over the years. Original wireless 802.11a devices had an estimated limitation of 65 feet, but newer wireless 802.11n devices can reach over 250 feet in most cases. As technology advances, wireless distribution amplifiers may become available for DVI connections. HDMI is currently the only wireless video technology supported by distribution amplifiers. Wireless HDMI extenders with distribution amplifiers can reach distances up to 250 feet or more in the right circumstances.  Now you should be familiar and understand the reach a DVI extender has so you can clear up room and be more orgaized in your daily life activities.

About the Author

Michael Alvarez has been working in the electronics and technology field for over 20 years.  He enjoys sharing his knowledge and expertise of DVI extender with others; while continuing to grow his knowledge.

How Does A Coaxial Cable Work

New advancements in technology are slowly wiping out what we once deemed as “amazing” in the tech field. Bluetooth, for instance, left many in amazement a few years back, but currently, Wi-Fi seems to be taking over in almost all aspects of wireless communication. While technology is indeed changing everything, scientists seem to have had a hard time shaking off coaxial/coax cables.

You’ve probably seen them before on cable TV, or on satellites. However, not many people really understand what goes on in a coax cable and even what’s inside the sheath.

Inside The Coax Cable

The outer plastic sheath that you see on a coax cable covers three components inside it including: 
- Copper core
- Dielectric insulator
- Copper shield

Typically, the copper core is responsible for conducting actual electrical signals across the cable. On the other hand, the copper shield and the dielectric insulator reduce magnetic interference in the cable.

Signal Transmission in a Coax Cable

Signals are actually transmitted simultaneously on both the copper core and the copper shield. This is done so that both of these conductors generate their individual electromagnetic fields. These two electromagnetic fields eventually cancel out each other.

Once that happens, the cables can now be placed next to other sensitive electrical devices or even metallic objects, and there won’t be any worries about the cables acting like magnets and interfering with the signal in the copper core. 

Besides that, the fact that these electromagnetic fields cancel out each other means that external magnetic fields will also be prevented to some extent.

Specifications For Design of A Coaxial Cable

Even if you have the four basic elements that make up a regular coax cable, it would be difficult to control other factors like attenuation, frequency, and the power handling capability of the cable.

The construction of coax cables goes beyond the four components that it is made of. Factors such as the physical size of the cable, the outside diameter of the inner copper conductor, and the dielectric constant play an important role in the functioning of the coax cable.

Choice of impedance is also crucial when it comes to design since it directly influences the attenuation. Bell Laboratories conducted experiments in 1929 and found out that the best coaxial cable impedances suited for high-voltage applications were 30Ω, 60Ω, and 77Ω.

Coaxial cables with air as the dielectric resulted in an impedance of averagely 77Ω. However, when more effective dielectrics such as solid polyethylene or polyethylene foam are used, the impedance drops to 52-64Ω.

Today’s coax cables can operate at frequencies of up to 2.4GHz, and that makes it worthwhile for use in Radio and TV industries. They were once used for implementing computer networks, especially in the bus topology, but twisted pair cables have replaced them.

All in all, coax cables earn their popularity based on the fact that they are good at transmitting signals at a considerably high frequency with minimal interference.

About the Author 

Michael Alvarez has been working in the electronics and technology field for over 20 years. He enjoys sharing his experence with coaxial cable with others; while continuing to grow his knowledge.

Having A Backup Plan

Imagine everything on your computer – pictures, home videos, resume’s, business documents, contacts. If you don’t have a backup plan for all of that information, you could be at risk of losing it all at any moment. The majority of computer users will deal with the reality of losing their data at some point in their lifetime, but it doesn’t have to be that way.

How often Should you Backup?

Someone who is using a computer mostly for gaming or just for surfing the web most likely won’t need to back up their computer on a regular basis. Someone that uses their computer for storing work or schoolwork related documents may want to consider backing up their computer on a weekly or daily basis.

What Do you need to backup?

Sure you will need to backup the obvious data files, such as your pictures, videos and Word and Excel documents, but there are others to consider as well. Everything in your settings, all the shortcuts that you have stored on your Desktop, and all of your applications can be backed up as well. It takes a computer anywhere between 1-5 days to get it back up and running after a hard drive failure, but backing up those extra items will get you up and running as smoothly as possible.

What Do You Use to Backup

Data can be backed up on a variety of hardware that range wildly in price and size. You can use something as simple as a USB drive will work for small amounts of data, and it is fine if you don’t store much on your computer. The average computer user will need some sort of external hard drive, which can store sometimes more information than your computer can. Home servers also work for backing up your data, but it is a secondary function and shouldn’t be the only purpose that you will use it for.

Some computers like those made by Apple can come with a service pre-installed called Time Machine, which automatically takes backups of the information you store on your computer. They will store your information safe and secure in servers far away, and you won’t have to worry about data backup yourself. Talk with the manufacturer of your computer first about the details of your preinstalled service if your computer came with one.

Additional Recommendations

Once you attempt to back everything up, make sure that it is in fact backed up and you have access to the information. If you have regular backups scheduled, be sure that they are in fact working and are keeping up to date versions of your files. Because files are often lost during natural disasters, keep a secondary backup in a separate location from where your computer is located. Finally, remember that all things digital have a lifespan. Whether you’re storing your valuable pictures on CD’s or disk drives, it’s important to know that they have a specified shelf life. Transfer that information to a new location every now and then to insure that you don’t lose those files. Additionally, the devices that you transfer information to in the future will be smaller, less expensive, and will be much smaller.

 is a computer expert that works on computers on a daily basis. He works with the Data Recovery Group on helping people backup and recover their important data.

How can your Business Benefit from IVR Solutions?

Technological advances are fantastic for consumers who love to keep up to date with trends in smartphones, laptops, game consoles and so on, but for businesses, advances in technology can make the difference between them expanding their horizons with an increase in profits and the improvement of the customer experience, and failing to meet expectations and targets and suffering as a result.

The use of Interactive Voice Recognition (IVR) technology has been growing significantly throughout the world of business in the last few years, and has become increasing popular in technology. For example, IVR has been used for satellite navigation systems and smartphones recently, and telephone banking has become more customer-friendly since IVR has enabled customers to be authenticated and identified by the voice system taking details such as date of birth and address details before sending them through to the call centres.

In call centres with extremely high call volumes, IVR is the perfect solution. If your call centre has a number of different services, it can sometimes be a time wasting issue if your call team have to keep forwarding calls and redirecting calls to the correct section. With IVR, the system becomes the middleman, ensuring that every call goes to the correct location within the business, enabling for higher productivity from each department as a result of being able to focus purely on their ownInteractive voice response individual departmental customers and tasks.

For some queries, IVR could cut out the need for human contact at all. If the customer needs a certain query answering, the voice response technology could direct them to a pre-recorded answer to the query, cutting out the need to wait in line to talk to call centre staff, and to get the answer to their question as quickly as possible. When it comes to improving customer service, IVR can be hugely beneficial to your business.

Here are a few of the most popular uses for IVR in business:

  • Mobile – Topping up Pay-As-You-Go phone accounts, registering and purchasing mobile phones including mobile phone products including ringtones, cases, games and logos
  • Banking – Account enquiries including making payments, registering cards, balance enquiries
  • Retail – Including making orders, bookings, credit card payments, issuing refunds, etc.
  • Utilities – Including meter readings, account balance, history of account, payments
  • Travel – Weather, ticket bookings, flight information, train enquiries, etc.

As most businesses will know, running a contact centre is an expensive task, but with IVR technology, calls don’t have to be wasted on dealing with simple enquiries, and call centre staff and get back to making sales and upselling products and services in order to make up for having to deal with the enquiries they shouldn’t have had to be dealing with in the first place. Reducing the average cost per call handled is a priority of all call centre businesses, and IVR allows for this to become a reality.

Applying IVR enables your business to develop and deploy new call services faster and cut operational costs, which in turn improves the job satisfaction of your call centre staff, who would much rather be dealing with customers who want to purchase goods and services rather than deal with small issues that could be dealt with by voice recognition technology. IVR allows management to customise the system to suit their needs and monitor call process from a desktop. Maintenance is also possible from a laptop, including debugging services as and when they go wrong. Having flexibility in your systems is a luxury in business, and is one of the biggest advantages of operating interactive voice response technology as an integral part of the operation of your business.

About the Author

Katie Matthews is a Marketing Executive at C3 a specialist in multimedia platforms for mass call handling and interactive messaging services in the UK.  Katie writes about topics covering technical applications, managed hosting and communications systems for business.

Ecommerce Website User Expectations

Ecommerce Website User Expectations

Wikipedia defines user expectations as the consistency that users expect from products. In terms of ecommerce website design, user expectations are very important because users are known to form expectations based on their experience with similar kinds of websites. In this regard it would make the most sense to design an ecommerce website that was consistent with the prevailing norms that were indicated by research into user behavior. In other words, if your users are used to doing something one way, you should base the experience of your site to mimic that which they are already familiar to give them a sense of comfort and familiarization.

There are many expectations that users may have that can be examined. One of the most prevailing expectations of any website is load speed. In fact, people will visit a website less often if it is slower than a close competitor by more than 250 milliseconds. Fast load times should therefore be the goal of every website. But what are the user expectations of ecommerce websites specifically?

User Expectation Study for Ecommerce Websites

Below we will examine where users expect certain elements of an ecommerce website to be located based on a study done by students at Wichita State University. These aspects include where users expect the following elements:

    • Back to homepage links

    • Advertisement banners

    • Internal Links

    • External Links

    • Shopping Cart

    • Help Link

In the below illustrations, we can see how users interpreted where they believed certain elements of an ecommerce website should be located. The participants were presented with a depiction of a browser window that contained a 7x6 grid of squares. Participants were asked to move tiles that represented each of the corresponding elements (mentioned above) where they expected them to be located on a typical ecommerce web page.

The darker the shade of blue, the greater percentage a particular square was selected.

Figure 1 - Back to Homepage Links 



Figure 1 Above - Back to Homepage Link

Figure 2 Above - Advertising Banners


Figure 3 Above - Internal Links

Figure 4 Above - External Links

Figure 5 Above - Shopping Cart


Figure 6 Above - Help Link

Ecommerce User Expectation Findings

As witnessed from the above illustrations that examined user expectations regarding the placement of common ecommerce web elements we see that there are relatively common expectations as to where these elements should be placed. The consistency in which participants selected the various locations for the six above-mentioned elements underscores the importance of ecommerce website design for user expectations. User expectations are an aspect of internet marketing that also is related to conversion rate optimization. Taking the guesswork out of navigating websites results in more time spent on websites, a decreased bounce-rate, and can ultimately result in more conversions (sales).

Study Review

Based on the above illustrations, we can infer that ecommerce website users expect the following:

  • Back to homepage links be located in the top left

  • Advertisement banners be located at the top of the page

  • Internal links be located on the left sidebar

  • External links be located at the right and left sides of the page

  • Shopping carts be located at the top right of the page

  • Help links be located at the top right of the page

In addition to the above expectations we can also see that the user expectations are similar for users in the four geographic regions that were used in the study – North America, Europe, India and Commonwealth. Perhaps the most indicative aspect of the study is that the participants also revealed that their expectations for the locations of the ecommerce elements were the same as where they would prefer the objects to be located. It is not surprising to see a correlation between expectation and preference as designated in this study.

About the Author

Daniel E. Lofaso is a SEO Consultant and search engine marketer for Digital Elevator. He frequently covers topics on SEO, internet marketing and conversion rate optimization.

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