Should I Use a VGA Splitter or DVI Splitter for Video Signal Input and Output?

Technology enhancements in video signal transmission has ensured analogue and digital signals are transmitted using different devices, for instance there are several types of video splitters on the market to select from for video duplication.

The decision must be canvassed thoroughly before buying a VGA or DVI video splitter. Therefore let’s outline what VGA and DVI are, as well as the timeline they were both released.

Video Graphics Adaptor (VGA) technology has been available since 1987 thanks to IBM for development of this analogue video display technology that went onto become a standard used when referring to analogue video display standards.

VGA hardware and the software enable the data processed to become graphical data that can be displayed on a display monitor. The actual resolution for VGA is set at 640 x 480 pixels in display resolution for width and height respectively. However VGA display resolution has been enhanced with higher video resolutions such as SVGA, XGA and UXGA et al. In addition, the majority of manufacturers and resellers still refer to a VGA splitter as ‘VGA Splitter’, even though VGA has higher analogue video resolutions available, such as mentioned early like SVGA, XGA and UXGA.

VGA can carry only analogue video signals thus if you require audio as well, a separate audio connection is required. There are numerous VGA splitters that have audio capabilities built-in to the VGA splitter, for instance several Smart View devices have models available with an audio stereo 3.5mm socket for each video connection.

Digital Visual Interface (DVI) is a newer technology that was released in 1999 by Digital Design Working Group. DVI superseded VGA, and as the name implies, DVI is uncompressed digital video data that is displayed on monitors and projector screens via DVI connectors. There are three main DVI connector types available on the market each with a specific pin arrangement interface, for example DVI-I, DVI-D and DVI-A. Moreover the three DVI connectors support certain video formats, for example:

• DVI-I is integrated video both analogue and digital signal support

• DVI-A is analogue video signal support

• DVI-D is digital video signal support

The key feature about DVI is its compatible with VGA. The two video interfaces work well with one another when an adaptor is utilised.

DVI has two methods available to stream the video signal between devices, which is known as Single link and Dual link. DVI single link maximum resolution is up to 1920 x 1200 (WUXGA) @ 60 Hz, while DVI dual link can produce much higher resolution, but depends on several factors, such as cable copper bandwidth limitations, DVI source limitations, and DVI sync limitations. Additionally DVI supports hot plugging meaning it can be connected and disconnected without powering down the system. However VGA isn’t suitable for hot plugging hence requires the system be shut down first before connection of VGA cables.

In the early days of DVI it was envisaged that DVI would become the recognised standard for digital format. However, DVI was mainly used with computer display monitors and not so much with household TV scenarios.

DVI can stream digital video very well however it can’t transfer audio signals. To enable audio on a DVI splitter you’ll require digital audio capability built-in to the devices with separate audio connections. Furthermore, the release of High-Definition Multimedia Interface (HDMI) technology that can transmit uncompressed digital video and digital audio signals together has ensured HDMI quickly became the popular choice for digital video output to display panels.

The new computer desktops don’t have VGA connections available on most systems. Usually there are DVI or DisplayPort connections instead. The DisplayPort digital interface superseded DVI in 2006 however you still see DVI utilised. Occasionally Information Communication Technology (ICT) hardware staff may be required to mix-and-match connections with adapters, for instance, if a machine has a VGA socket but the display monitor has a DVI connector, an adapter can be utilised since DVI is backward compatible. Note: the signal will still be VGA quality that is transmitted unless a dedicated electrical VGA to DVI converter is used.

When selecting a DVI or VGA splitter ensure you check the specifications for the product, for example resolution supported, frequency rate, the display video type supported, connection types for interface input/output, power adaptor required, switching off/on functions, built-in amplifier booster and whether incorporated with audio socket or not.

The most common video splitter is the type ‘one input video source to two outputs video’ destination. However there are numerous configurations to select from for video input and output setups. Another type of splitter is called a ‘video matrix’ that can have two or more video inputs and two or more video outputs. This can be handy for multiple sources that can be switched on/off to achieve the desired video output display. Each video splitter will suit a particular scenario for video presentation so choose wisely. In addition, several brand video splitters can be cascaded, such as Smart View.

To maintain the integrity of the video signal high quality VGA cables with ferrite filters should be interconnected with the devices. If the installer decides to skimp on the cost of VGA cables for the installation signal degradation can lead to problems such as ghosting and pixelation.

There are DVI splitters and DVI boosters with High-bandwidth Digital Content Protection (HDCP) incorporated into the devices. Authorised digital video content is only allowed to be transmitted and received between HDCP devices while VGA analogue signals aren’t restricted with this security protocol. Some users have reported interconnection issues when using HDCP enabled devices, such as handshaking connection problems and continuity in live video streaming.

If you have the newest high-definition display monitors you should consider HDMI splitters as well. VGA can be problematic when outputting video signals to large panel screens like Plasma TV, LED widescreen TV and OLED TVs. Especially video quality degradation issues and pixelation problems may occur when VGA is the source to high-definition products.

VGA splitters have generally been more popular with computer display monitors over the years than DVI. The cost for a VGA splitter is usually less than its equivalent DVI product. Furthermore with the popularity of the superior HDMI technology integrated into high-definition TVs and notebooks has ensured DVI splitters are less common. With most people selecting a HDMI splitter for their digital video and audio solutions over the less-features of DVI.

Finally, you should consider several pivotal factors for your decision, such as the quality of the video resolution broadcasted you require, and whether it’s digital, or analogue equipment utilised in your setup. Furthermore check the product specifications before purchase, and consider if you require audio as well for the video broadcast? Moreover if you implement a VGA splitter or DVI splitter choose one with a booster built-in to the device. The costs should be secondary to ensure you’re satisfied with your ultimate decision.

Making The Most Of The Cameras Photography Communities

The cameras photography buffs use are like paints for an artist. The first camera was made in 1685, but a permanent photograph did not come around until 1826 and was by Joseph Nicéphore Niépce using a special sliding wooden box.Technology has come along way in the development of the cameras photography individuals use. Several types exist for the photography community to take advantage of today.Cameras photography enthusiasts use varied types of cameras. Many prefer the newer digital arts cameras over the old prints photography cameras. The digital cameras allow for photo sharing on the web and also for the image to be deleted or saved if need be.However, the basic camera that uses film is still less expensive. Some people may be ready for the technology change, but their pocketbooks may not be.Another thing to consider with cameras photography enthusiasts use is whether the lens will be built into the camera or whether it will be detachable. For taking wildlife photography, a detachable lens is usually needed. The detachable lens allows the photographer to be able to zoom in closer and capture intimate details that otherwise would not be caught.The new digital cameras, however, have zoom lenses that can reach far, but still not as far as the basic camera with a detachable lens. Again, the use of the cameras photography buffs will use must be taken into account in order to pick the right camera for the job.Cameras photography communities use are so varied that anybody can use them. No matter whether the camera is digital, basic film, ones with detachable lenses, or ones with built in zoom lenses cameras are a hot commodity for people of all ages to have them.Teens are so happy when they are given a camera as a gift. Older people even enjoy getting a new camera. Pictures are great memories, and with the right camera, every picture taken can make a special memory last.

An Introduction on Automotive Floor Jacks

Types of Floor Jacks
A floor jack can mean different things depending on where you use it. The jack used in most car repair shops or garages to lift cars and make repairs conveniently under the car or a tire is called an automotive floor jack. However, another jack is utilized to raise bigger ‘things’ like buildings or houses that needs its beams to be replaced because they are sagging. The last type of jack is used for phone connections. It got its name because it is typically installed on the floor and wall intersection. Notice how all equipment are called floorjacks but have entirely different meanings and purposes.While there are a lot of different jacks available, this article would only focus on the first type of floorjack mentioned: automotive floor jacks. The other two types of jacks will be reserved for a different article.Automotive Jacks
It is common for people to always associate the term ‘floor jacks’ with automotive floor jacks as this had always been the first floorjacks produced. This one uses a pump arm, hydraulics or air compression to raise vehicles and access the undercarriage easily. The automotive floorjack makes changing tires or doing a brake job easier to accomplish. These are handy tools that can be found in car hoods, garages, farms and other places where there are vehicles that may need to be repaired. Automotive jacks have made a lot of repairs easier for the common do-it-yourself mechanics and vehicle owners.On the other hand, this automotive jack should not be confused with hydraulic lifts which are used in most auto repair shops.A more stable ground is required for automotive floorjacks to eliminate improper balance. The ground should not shift as it could seriously harm the vehicle. A lip can be connected to the automobile and raise it gently by pumping the arm, hydraulic system or air compressor.Automotive jacks have different ratings depending on the weight that they can lift without sacrificing security. These automotive floorjacks are very powerful that they can up to 20 tons. For your personal use, you can purchase a 2 or 3-ton jack especially if you’re going on long road trips so you can easily change your tire whenever needed. Obviously, the bigger your vehicle, the stronger is the jack required to do the job. Farm equipment, on the other hand, may necessitate a 10-ton automotive jack.

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