Pardon us for the less than humorous quip for my next article’s title. We admit it we were reaching on that one. However, it’s important to talk about the lengths one can run a DVI cable and how long a DVI video signal can carry. After all the point of these articles is to be educated, right? It can’t all be fun and games here when we’re talking after all.
DVI equipment according to rules must keep a signal at sixteen feet in length. But with the creation of more potent graphics cards and bigger display it’s hard to determine the actual maximum length. There are DVI cables that go all the way up to a distance as far as 25 feet. Some places can even make custom cables extending that length but the functioning of these cables depends on your hardware.
Purchasing a DVI signal booster is a better guarantee in getting a better signal when length is extended. Contrary to what may be thought digital picture quality can suffer signal loss. A less than working DVI run can result in a shaky picture. Other examples of a less than quality display is flickering of the screen. A blank display is the nail in the coffin with signal loss.
Some tests on assorted display equipment have shown that at a distance twice that of the industry standard have yielded results of a strong signal. Tests at a little bit long a length have unfortunately produced less than favorable results. Those results being a frozen screen or no display at all.
That’s why attempting to lengthen DVI cables at a less than suitable distance can dramatically alter your video display. Your digital quality picture will definitely be hindered by this. The one advantage analog displays do have over digital is their ability to go a greater length. This means that your display can change from digital to analog when your digital signal weakens.
Because of this long cable runs are better suited for HDMI (in the digital category) or VGA (for analog based displays). If DVI is the only format you can go with then do your best to use DVI-D cables and setting your display to a digital input.
Now we mentioned DVI signal boosters earlier. Well let’s take the time to tell you a bit more about them and how they work. It can read a signal source at nearly 40 feet away and the same can be said for the opposite direction. The method used for this is done via the DVI booster using PanelLink technology.
This makes it possible to give a signal that has the best and most precise quality. For further strengthening to the DVI’s output you will need an external power source. To help fix this a signal booster may come with a DC 9V adaptor. Definitely a necessary addition when dealing with such high end power.
This device is of course intended for any digital DVI runs that you are doing that break the scope of the average computer to monitor setup. The utilization of this device occurs mostly in business settings where a high end display is needed, educational facilities, or any other situation that is going to involve having a display be more than 16 feet away from its source. A DVI booster can provide a signal boost of almost 80 feet. Quite an improvement one must say.
Well, with everything you now know, what lengths will you have to go to establish your DVI signal?
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