Technology DVI Cables – The optical solution
| DVI Cables – The optical solution |
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When using copper based DVI cables there is a limit to the maximum length that can be achieved. By cascading cables with signal repeaters it is possible to achieve lengths of 80 or so meters, but this is the limit if error free data transmission is to be achieved. If it is necessary to exceed this maximum then it is quite possible if you use a dvi cable. Be warned though, this is not a low cost solution and you can expect to pay up to £2,000 for a 100 meter run. The cables work by incorporating devices in the transmitter and receiver connectors that converts the electrical data into light pulses that are streamed down the cable. At the receiver end the device reads the pulses of light and converts them back into electrical pulses. Having said that this solution is expensive, it is also of the highest quality you could imagine. In fact to all intents and purposes the quality is perfect. There is no loss of signal over exceedingly long runs and, as it is moving photons around rather than electrical pulses, there is no EMI (Electro Magnetic Interference) apart from an absolutely negligible amount generated by the optical converters. Applications for optical DVI are almost exclusively in the professional arena where flawless image quality is essential. Their reliability, integrity and ease of assembly without the need to be concerned about EMI or picking up stray signals from other equipment means they are often incorporated in exhibitions and trade shows. They are also found in TV studios and monitor banks. Optical DVI cables are an expensive solution, but they offer the best quality in digital video transmission available.
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