Extron offers different models of DAs designed to work with various types of signals. When selecting a DA for a specific application, first answer the questions from Step 1. Then, identify the product category that best fits your needs:

	• Line Drivers	Enabling long distance connections between one source and one destination, line drivers are used to preserve video quality when driving video signals over long cable runs. Video signals normally lose amplitude and high frequencies on long coax cable runs. Line drivers provide variable gain control which can be adjusted to boost the video signal, compensating for the overall drop in signal voltage.
	• Audio/Video	A/V DAs distribute composite video, S-video (S-VHS & Hi 8), and/or stereo audio. Some Extron DAs are a combination of more than one DA in a single enclosure. For example, the Extron CVDA 6 MX QUAD contains four one input, six output composite video DAs. Only one internal power supply is used to power all four DAs. With all four DAs built into one rack-mountable enclosure, the dual and quad DAs also offer space savings, heat reduction, and competitive pricing—all at the same time.
	• DVI (Direct Digital)	DVI DAs distribute transition minimized differential signaling (TMDS) DVI signals.
	• VGA, Mac, 13W3, RGB	These DAs are designed to work with different computer signals and analog signals, such as RGBHV, RGBS, and RGsB. RGB DAs have four or five BNC connectors per input or output and can be used with composite video, S-video, and component video. RGB DAs can accept VGA-UXGA, Mac, Sun, or SGI video using adapters.

Glossary Terms

TMDS - Transition Minimized Differential Signaling. An all-digital video transmission standard developed by Silicon Image, Inc. The standard is limited to 5 meters or 15 feet. Silicon Image markets this standard as "PanelLink."
DFP - Digital Flat Panel. A digital video connectivity standard that was developed by VESA (Video Electronics Standards Association). This is a 20-pin connection standard that handles only digital video signals. This standard uses TMDS (transition minimized differential signaling) from Silicon Image and DDC (Display Data Channel), also from VESA.