DVI Guide - Connectors and Cables Explained
What is DVI?
DVI (Digital Visual Interface) is a digital video interface developed by the Digital Display Working Group (DDWG). It is able to support both digital and analogue video signals over a single DVI cable and is commonly found on computers, LCD monitors, projectors and other digital display equipment.
What are the advantages of DVI?
Traditional CRT (Cathode Ray Tube) displays use an analogue signal to receive image data from the computer's graphics card. For this reason, early graphics cards needed to convert their native digital signal into analogue in order to support CRT monitors.
LCD monitors are digital display devices, but when they were first introduced they needed to be able to accept and adapt this analogue signal to ensure compatibility with the majority of available computers. In order for the LCD to accept the computer's analogue output, the signal had to be reconverted to digital.
Since both the computer and the LCD digital monitor accept and transmit digital signals, the process of translating digital to analogue is fundamentally unnecessary. The DVI digital connection removes this digital - analogue - digital conversion process, and so removes inaccuracies and information loss due to each conversion process.
The DVI interface has proven to be extremely versatile; it provides manufacturers with the flexibility to support digital devices while remaining backwards compatible with analogue devices.
DVI Cable & Connector Types
|DVI-D Single Link – this Digital only connection supports digital only displays with screen - this digital only connection supports displays with screen resolutions of up to 1920 x 1080 and 1080p. You can see our range of DVI-D Single Link cables by clicking on the following links: DVI-D Single Link cables and DVI-D Super Long Distance cables.
DVI-D Dual Link - this connection uses a second data link and supports much higher resolutions such as 2048 x 1536 (QXGA). We supply a range of dual link DVI cables including DVI-D Dual Link and Gold Line DVI-D Dual Link.
DVI-A, Analogue - this rarely used cable connects only the analogue RGB signals.
DVI-I Single Link - this connection incorporates both the digital and analogue signals in a single DVI cable. This means the cable can send a digital-to-digital or an analogue-to-analogue signal (for use with an analogue display). Click the link to see our DVI-I Single Link cables.
DVI-I Dual Link - similar to DVI-I Single Link, but with a second data link for higher resolutions. This DVI lead connection incorporates both the digital and analogue signals in a single cable. This means the cable can send a digital-to-digital or an analogue-to-analogue signal.
Mini DVI - the Mini DVI connector is a single link connector commonly found on Apple computers. Its small size makes it ideal for use with laptops. It can support digital and analogue signals.