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What is DVI?
DVI (Digital Visual Interface) is a standard developed
by the Digital Display Working Group (DDWG), which allows digital flat
panel displays, monitors, projectors and plasma screens to be connected
using a single connector. The DVI interface is able to support both
digital and analogue signals over a single cable.
What are the advantages of DVI?
Traditional CRT (Cathode Ray Tube) displays use an
analogue signal to receive image data from the computers 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.
DVI, at standard cable lengths (up to 7.5m), suffers
none of the problems traditionally associated with analogue interfaces,
such as noise, “sparkles”, “ghosting”, “snow”, poor colour matching and
“softness” caused by loss of sharpness.
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 Connection Types
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DVI-D Single Link – this Digital only connection supports digital only displays with screen resolutions of up to 1920 x 1080.
DVI-D Dual Link – similar
to single link, this connection uses a second data link and supports
much higher resolutions, such as 2048 x 1536 (QXGA). Click here to see our range of DVI-D Dual Link cables.
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 cable. This means the cable can send a digital-to-digital or an
analogue-to-analogue signal (for use with an analogue display). Click here for 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
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.
HDMI (High Definition Multimedia Interface)
– For use with Plasma and High Definition TVs, projectors and LCD
Screens. HDMI cables combine the digital video signal of DVI with
multi-channel audio, and control signals. Additionally, the HDMI
standard includes a feature called HDCP (High-Bandwidth Digital Content
Protection) to protect material from being copied across the digital
interface. Click here to see our HDMI cable range, and here for our HDMI to DVI cables.
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DVI-D Single Link Male
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DVI-D Dual Link Male
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DVI-I Single Link Male
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DVI-I Dual Link Male
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DVI-D Female
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DVI-I Female
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HDMI Type A Male
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HDMI Type A Female
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Maximum distance between computers
With standard DVI cables you can extend the distance
for digital monitors with fixed cables and connections, by up to 7.5m.
Please note that cable lengths over 7.5m are above the recommended
length laid down by the DDWG. Using longer cables may result in image
degradation or loss of picture, but to some extent this also depends on
the performance of your graphics card and monitor. Please also remember
that every additional male-female connection you make can lower the
quality of the signal transmission. However, for long distance
solutions, we recommend you use our DVI-D Single Link SLD (Super Long Distance) cables. These cables are specially designed for longer transmission lengths.
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RF-BLOK Connector
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In keeping with the LINDY tradition of premium quality computer
connection technology, all LINDY DVI-D and SLD Cables use a rugged
construction RF-BLOK shielded design that ensures optimum performance
from your flat panel monitor. LINDY RF-BLOK cables use a one-piece
metal block EMI/RF shield that gives reduced interference, and
increased insulation resistance of up to 25%. The innovative
interconnect design means there is no soldering required in the
assembly of the cable. The design and excellent RF shielding also means
that there is no requirement for a ferrite core, so the cable is less
stressed and more flexible – an advantage when the cable needs to be
bent in tight spaces.
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DVI Adapters
LINDY DVI Adapters
allow different monitors and graphics cards to be connected to the DVI
interface. A wide range is available including ADC, DFP, VGA, P&D
and HDMI versions.
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