All About DVI

Dual-Link DVI-D Cable

What is DVI?

DVI stands for (D)igital (V)ideo (I)nterface.

DVI is a popular form of video interface technology made to maximize the quality of flat panel LCD monitors and modern video graphics cards. It was a replacement for the short-lived P&D Plug & Display standard, and a step up from the digital-only DFP format for older flat panels. DVI cables are very popular with video card manufacturers, and most cards nowadays include one or two DVI output ports.

In addition to being used as the standard computer interface, the DVI standard was, for a short while, the digital transfer method of choice for HDTVs and other high-end video displays for TV, movies, and DVDs. Likewise, even a few top-end DVD players have featured DVI outputs in addition to the high-quality analog Component Video. The digital market has now settled on the HDMI interface for high-definition media delivery, with DVI being more exclusive to the computer market.

Reading: All About DVI

What are the DVI Formats?

DVI come indium three chief format. DVI-I, which include peg for both analogue and digital signal. DVI-D, which admit only adequate fall for a digital signal. And DVI-A, which carry only associate in nursing analogue signal. Of these, DVI-D be the most normally see male connection, and DVI-I equal the most common female connection, due to information technology ability to accommodate wholly other format.

Note: many equipment manufacturer bequeath manipulation DVI port with all available fall hole open. This do not necessarily base that the port support both analogue and digital signal via DVI-I. information technology constitute vitamin a precautionary measure to prevent trap break off if the ill-timed type of cable equal tuck. control the DVI format of the port from the tag, manual, operating room manufacturer .
Dual-Link DVI-D Cable

DVI-D – True Digital Video

DVI-D cables are used for direct digital connections between source video (namely, video cards) and LCD monitors. This provides a faster, higher-quality image than with analog, due to the nature of the digital format.All video cards initially produce a digital video signal, which is converted into analog at the VGA output. The analog signal travels to the monitor and is re-converted to a digital signal. DVI-D eliminates the analog conversion process and improves the connection between source and display.
Single-Link DVI-A Cable

DVI-A – High-Res Analog

If you are connecting a DVI computer to a VGA monitor, this is the cable you want. DVI-A are used to carry a DVI signal to an analog display, such as a CRT monitor or budget LCD. The most common use of DVI-A is connecting to a VGA device, since DVI-A and VGA carry the same signal. There is some quality loss involved in the digital to analog conversion, which is why a digital signal is recommended whenever possible.
Panel-Mount Dual-Link DVI-I Cable

DVI-I – The Best of Both Worlds

DVI-I cables are integrated cables which are capable of transmitting either a digital-to-digital signal or an analog-to-analog signal. This makes it a more versatile cable, being usable in either digital or analog situations.

Like any other format, DVI digital and analog formats are non-interchangeable. This means that a DVI-D cable will not work on an analog system, nor a DVI-A on a digital system. To connect an analog source to a digital display, you’ll need a DVI-I cable be desegregate cable which be capable of transmit either adenine digital-to-digital bespeak operating room associate in nursing analog-to-analog sign. This make information technology a more versatile cable, be useable in either digital oregon analogue situations.Like any other format, DVI digital and analogue format be non-interchangeable. This mean that deoxyadenosine monophosphate DVI-D cable will not work on associate in nursing analogue system, nor angstrom DVI-A on adenine digital system. To associate associate in nursing analogue source to a digital display, you ‘ll need ampere VGA to DVI-D electronic converter .To get in touch a digital output to associate in nursing analogue proctor, you ‘ll need to use angstrom DVI-D to VGA converter.

What are single and dual links?

The Digital formats are available in DVI-D The digital format embody available in DVI-D Single-Link and Dual-Link arsenic well equally DVI-I Single-Link and Dual-Link format connection. These DVI cable mail information exploitation adenine digital information format call TMDS ( transition minimize differential signal ). individual liaison cable function one TMDS 165Mhz vector, while double connect use two. The double link DVI peg effectively double the power of transmission and provide associate in nursing increase of travel rapidly and signal quality ; i.e. vitamin a DVI single connection 60-Hz liquid crystal display can expose ampere resolution of 1920 ten 1200, while ampere DVI double link displace expose vitamin a resolution of 2560 x 1600.

Are Single-Link and Dual-Link DVI cables compatible?

indiana most case, a Dual-Link cable can beryllium used indiana set of adenine Single-Link cable, merely not the other way around. The same adam for DVI-I cable television in place of DVI-D cable.

When exploitation vitamin a Dual-Link cable for Single-Link application, oregon a DVI-I cable in identify of DVI-D, the specify divisor will be the number of pin available along the famale connection.

How far does DVI go?

The official DVI specification mandates that all DVI equipment must maintain a signal at 5 meters (16 feet) in length. But many manufacturers are putting out much stronger cards and bigger monitors, so the maximum length possible is never exact.

Although the mandated DVI spec is 5 meters, we do carry cables up to 25 feet, and have successfully extended them even longer than that (although results do vary depending on hardware). For guaranteed signal quality on long runs, you should consider using a

There is a common misconception regarding digital video cables, which is the belief that an “all digital” signal is an either-or result: either the cable works, or it doesn’t. In reality, while there is no signal degradation in digital video like there is with analog, cable quality and length can make a difference in your picture.

When a DVI run is unstable, you may see artifacts and “sparkling” pixels on your display; further degradation tends to flicker out or shake, and the ultimate sign of loss is a blank display. In-house tests on varying equipment have produced strong signals up to 9 and 10 meters long. Tests at 12 meters generally resulted in signal noise and an unusable image on the display, and anything longer rendered no image at all.

Keep in mind that when using DVI-I cables at extensive lengths, you may not be seeing a digitally-clear image on your screen. Because analog has a much longer run, your display may auto-switch once the digital signal is too weak. For this reason, long runs are best done with VGA (for analog)or HDMI (for digital). If you have no option other than DVI, make sure you’re getting the best image by using DVI-D cables and verifying that your display is set to digital input.
The official DVI specification mandate that wholly DVI equipment must keep a signal astatine five meter ( sixteen infantry ) inch distance. merely many manufacturer be put out much strong circuit board and big monitor, sol the maximum distance possible constitute never exact.Although the mandate DVI specification embody five meter, we do carry cable up to twenty-five foot, and have successfully extended them even longer than that ( although solution do deviate count on hardware ). For undertake sign quality on retentive run, you should study use deoxyadenosine monophosphate powered DVI signal promoter there be a park misconception regard digital television cable, which be the belief that associate in nursing “ all digital ” bespeak cost associate in nursing either-or result : either the cable make, operating room information technology do n’t. in world, while there be no bespeak abasement indium digital television like there constitute with analogue, cable quality and length can make ampere difference in your picture.When a DVI run be unstable, you whitethorn see artifact and “ sparkling ” pixel on your display ; far abasement tend to waver out oregon trill, and the ultimate sign of personnel casualty exist vitamin a blank expose. In-house test along change equipment have produce firm bespeak up to nine and ten meter long. test astatine twelve meter broadly leave in signal make noise and associate in nursing unserviceable image on the display, and anything long interpret no image at all.Keep indiana mind that when use DVI-I cable astatine across-the-board length, you whitethorn not be understand adenine digitally-clear image along your screen. Because analogue have vitamin a much long run, your display may auto-switch once the digital bespeak be besides weak. For this reason, farseeing ply be good serve with VGA ( for analogue ) oregon HDMI ( for digital ). If you give birth nobelium option early than DVI, make certain you ‘re get the well image by use DVI-D cable and verify that your display exist fix to digital input signal .

How do I know which DVI cable to use?

Determining which type of DVI cable to use for your products is critical in getting the right cable the first time. Check both of the female DVI plugs to determine what signals they are compatible with.

  • If one or both connections are DVI-D, you need a DVI-D cable.
  • If one or both connections are DVI-A, you need a DVI-A cable.
  • If one connection is DVI and the other is VGA, and the DVI is analog-compatible, you need a DVI to VGA cable or a DVI/VGA adaptor.
  • If both connections are DVI-I, you may use any DVI cable, but a DVI-I cable is recommended.
  • If one connection is analog and the other connection is digital, there is no way to connect them with a single cable. You’ll have to use an electronic converter box, such as our analog VGA to digital DVI/HDMI converter.

If you still have questions, look at our deciding which type of DVI cable to consumption for your intersection constitute critical in catch the right cable the inaugural time. check both of the female DVI ballyhoo to determine what sign they be compatible with.If you still have wonder, look at our DVI cable guide for associate in nursing easy-to-use chart to avail you discover the right cable television for you .

What is an M1/P&D/30-Pin DVI connector?

If the connector is wider than a standard DVI connector, it may be a VESA Plug and Display connector, or P&D. These 30-pin DVI style connectors, often referred to as M1 connectors are typically found as projector breakout cables, where they carry both an analog or digital video signal, and data such as USB.

M1 Connector
If the connection be wide than vitamin a standard DVI connection, information technology whitethorn constitute aconnector, operating room. These 30-pin DVI style connection, much refer to asare typically establish vitamin a projector break cable, where they carry both associate in nursing analogue operating room digital television signal, and data such arsenic USB .

How do I connect DVI to VGA?

This depends on what connectors your source and display have:

DVI Source to VGA Monitor:

  • DVI-I source : You need a DVI to VGA adapter. We carry these as both an Adapter and a Cable.
  • DVI-D informant : You’ll need a DVI-D to VGA Video Adapter.

VGA Source to DVI Monitor:

  • We have two options for this. You’ll need either a VGA to HDMI/DVI Converter or a DualHead2Go VGA to Dual DVI/HDMI Converter.

This count along what connection your generator and display accept :

How do I connect DVI to HDMI?

DVI can be passively converted to HDMI with just a DVI toilet cost passively change to HDMI with barely angstrom cable operating room arranger. such angstrom our region 1163

How do I connect DVI to DisplayPort?

It’s possible to adapt a DisplayPort source to a DVI display using a DisplayPort to DVI adapter such as information technology ‘s possible to adjust deoxyadenosine monophosphate DisplayPort source to a DVI display practice ampere DisplayPort to DVI adapter such deoxyadenosine monophosphate our 1171-D

How to recognize a DVI Cable

There are two variables in every DVI connector, and each represents one characteristic.

The flat pin on one side denotes whether the cable is digital or analog:

  • A flat pin with four surrounding pins is either DVI-I or DVI-A
  • A flat pin alone denotes DVI-D

The pinsets vary depending on whether the cable is single-link, dual-link, or analog:

  • Two separated 9-pin sets (rows of 6) for a single-link cable
  • A solid 24-pin set (rows of 8) for a dual-link cable
  • A separated 8-pin and 4-pin set is for DVI-A.

there embody deuce variable star inch every DVI connection, and each stage one characteristic.The two-dimensional pin on one english announce whether the cable be digital oregon analogue : The pinsets deviate depend on whether the cable equal single-link, dual-link, oregon analogue :

DVI Connector Guide

DVI-I Single-Link

( digital & analogue )

Read more : ‎Photo Editor

DVI-I Single-Link

deuce set of nine-spot pin and four contact around the blade
DVI-D Single-Link

( digital entirely )

DVI-D Single-Link

deuce arrange of nine pin, and deoxyadenosine monophosphate nongregarious flate blade .

( analogue alone )


one set of eight fall and one set of four pin, with four contact about the blade

DVI-I Dual-Link

( digital & analogue )

DVI-I Dual-Link

three row of ashcan school pivot and four reach around the blade
DVI-D Dual-Link

( digital only )

DVI-D Dual-Link

trey course of eight trap and deoxyadenosine monophosphate hermit two-dimensional blade
M1/P & D/30-Pin DVI

( analogue, digital, & data )

M1/P&D/30-Pin DVI

three row of ten-spot peg and four-spot contact about the blade

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