There are two types of signals that can be carried through a DVI
cable: Analog and Digital. Not every DVI connection carries both
signals. If you are connecting a DVI source to a VGA/Component analog
display then it is important to know if your source carries an analog
signal. As a simple rule, Computer DVI ports typically support analog
signals, whereas DVD players, and satellite/cable boxes do not usually
support analog output.
1. To start off, look at your DVI connection. If it has a Horizontal
bar surrounded with pins, then it is a DVI-I connection which may or
may not carry a analog signal. If it doesnt have the pins then it only
sends digital signals.
2. If it has those pins, then double check with the manual for the
device to see if it supports analog through put. It wwill be in the
specifications section and may say Analog, RGB, or VGA. If it doesnt
say, then the next best step is to contact the manufacturer to see what
If your DVI port supports analog input then you can use DVI to
VGA converters. If you need to connect to a component analog
display, then you may be able to use a DVI
to VGA cable.
If your DVI port does not have analog throughput, then you may want
to use another connection on your device. The other option is to
convert the digital signal to analog using a DVI
to VGA converter.