What do dvi cables do

However, this is very rarely the case. In one important way this is also a good thing for them to do. Cable connectors that contain pins not present on a DVI cards connector can easily be damaged when "forced" into the connector. Manufacturers of DVI cards should and usually do use a seperate connector for the analog signal if this is supported by the card.

This keeps both analog and digital signals from being run at the same time in the same cable, and eliminates some connector confusion. Remember: Analog only talks to analog, and digital only talks to digital. Why was DVI created? Wasn't DFP enough?

Well here's the history. This was very expensive and considered more than was necessary especially for monitor and video card manufacturers. DFP on the other hand eliminated all this excess and has only a Digital interface for Flat panal displays. This will not be enough for a future filled with HDTV, which has a resolution of x pixels. Dell has an excellent DVI technolgy brief. Important: In DVI like anything else, Analog only talks to analog, and digital only talks to digital.

While converters are possible, nobody has any on the market. If both devices use this connector, use a "Dual Link" connector. DVI-A Notice the three rows of eight pins have three pins missing in the first row, five missing in the second row and four missing in the third row, and that the "flat blade" contact seen to the left has two contacts above and below it.

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This article is meant to help you figure out just what type of connection will, or won't, work with your devices which have DVI sockets. In general, there are only two signal types which run through DVI connectors. The two types are digital and analog, and they are incompatible with one another.

If you use a DVI cable to connect a device that sends out only digital signals to a device that accepts only analog signals, or vice versa, you'll get no signal; so the first question you have to answer is whether your devices can talk to each other at all. This format is completely incompatible with any analog signal format, and therefore cannot be connected to anything that doesn't also handle DVI-D or HDMI.