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Product
 DVI cables >> DVI18+1 M
 
  
Product name:
DVI18+1 M
Description :
DVI18+1M Plug
   
 
    Details
Digital Visual Interface
 
The Digital Visual Interface (DVI) was developed to create an industriay standard for the transfer of digital video content. The interface is designed to transmit uncompressed digital video and can be configured to support mutiple modes such as DVI-D(digital only), DVI-A(analog only), or DVI-I(digital and analog). Featuring support for analog connections as well, the DVI specification provides optional compatibility with the VGA interface. This compatibility along with other advantages led to widespread accetance in the PC industry ove rother competing digital standards such as Plug and Display(P&D) and Digital Flat Panel(DFP). though predominantly found in computer devices, DVI is also present in some consumer electronics such as television sets.
 
DVI cable and connector
 
In general, DVI cable lengths up to 4.5 m (15 ft) will work for displays at resolutions of 1,920  1,200. This resolution will work even up to 10 m (33 ft) if appropriate cable is used. Cable lengths up to 15 m (50 ft) can be used with displays at resolutions up to 1,280  1,024. For longer distances, the use of a DVI booster is recommended to mitigate signal degradation. DVI boosters may use an external power supply.
The DVI connector can carry a digital-video signal, an analog VGA signal, or both. As well as digital signals, the DVI connector includes pins providing the same analog signals found on a VGA connector, allowing an analog VGA monitor to be connected with a passive plug adapter (or with a converter cable with VGA at one end, and DVI-A or DVI-I at the other). This feature was included in order to make DVI universal, as it allows either type of monitor (analog or digital) to be operated from the same connector. The DVI connector on a device is therefore given one of three names, depending on which signals it implements:
  • DVI-D (digital only, both single-link and dual-link)
  • DVI-A (analog only)
  • DVI-I (integrated - digital and analog)
The DVI-D and DVI-I connector includes provision for a second data link, but few devices implement this. In those that do, the connector is sometimes referred to as DVI-DL (dual link).
 
Technical data
 
The DVI specification mandates a maximum pixel clock frequency of 165 MHz. With a single DVI link, the highest supported standard resolution is 2.75 megapixels (including blanking interval) at 60 Hz refresh. For practical purposes, this allows a maximum screen resolution at 60 Hz of 1,915  1,436 pixels (standard 4:3 ratio), 1,854  1,483 pixels (5:4 ratio), or 2,098  1,311 (widescreen 16:10 ratio).
To support display devices requiring higher video bandwidth, there is provision for a dual DVI link. A dual link doubles the number of TMDS pairs, effectively doubling video bandwidth at a given pixel clock frequency.
 
Analog
  • RGB bandwidth: 400 MHz at −3 dB
Reference information
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