There are varying reasons why you might want to try splitting the DVI signal from your computer. The most popular reason is because you would like to have duplicate images displayed on multiple screens. For example, you might want to send the image on your monitor to a projector screen. While this works well in theory, in practice there are many things you have to do before this can work well.

DVI splitter cables are meant to send one output signal to more than one device. If this is going to work, you first need to check that each and every receiving device can support the same signal type. Splitter cables are generally too simple to handle signals sent from an analog device to a digital device, for example.

You also want to make sure that both of the screens you are using are roughly the same size. Having similar specifications, such as contrast ratios, also helps. This is because a basic DVI splitter will only be able to send one signal – this includes ratio, size, color, and frequency, among others. If each device needs a different signal, there will be conversion problems.

While many people believe that you can use these cables to extend the size of the screen onto two monitors, this is not possible. A cable of this type is usually only able to transmit mirror or duplicate images to each screen. If you would like to instead make your desktop larger, you will need to find an entirely different output device.

In all honesty, figuring out how to make a splitter cable work properly can be a time-consuming headache. The best way to simply the process is simply to avoid it altogether. A better, more effective way to split the signal is by using a DVI converter. A DVI converter box can handle any of the conversions you might need for your monitors, without any added stress or concern about transmitting different types of signals. Signal degradation will also be eliminated. Although these converter boxes may be more expensive, they are well worth the time and effort saved.

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