Gefen 2x8 DVI Distribution Amplifier



Recommended replacement: Gefen EXT-DVI-148
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The Gefen EXT-DVI-248 is a 2:8 DVI Distribution Amplifier is solution for anyone with more complex video viewing requirements such as studios and presentation venues. It accommodates various system scenarios. Up to two video sources (either DVI-equipped computer, DVD player or satellite set top box) are connected to the distribution amplifier on one side. On the other side, eight video outputs are available to be used in part or in full. All displays are driven by one of two sources; each source drives eight displays at one time. Sources are switched via the RMT-2 remote control. The 2:8 DVI Distribution Amplifier is also equipped with an auto sensing feature that automatically switches to whatever source is active, should one of the sources drop out.

This DVI Distribution Amplifier is also a flexible, expandable distribution hub. It uses a unique DVI Bus technology to connect multiple amplifiers without sacrificing a DVI output connection, by utilizing a ninth output connector. Expansion is possible up to 32 units (256 DVI Connections).

For home theater applications, the unit is HDCP (high bandwidth digital content protection) compliant, making it compatible with all HDTV content and displays. HDCP is a standard data encryption scheme encoded into the DVI signal to prevent videos from being copied. HDCP was adopted in 2004 by the entertainment industry. If an HDCP-encoded video source is connected to a HDTV display without the proper HDCP decoding mechanism, the picture is relegated to "snow" or a very low (480P) resolution. To avoid this situation the video source, the display and any device in between must be equipped with HDCP "software key" decoding devices.

Gefen EXT-DVI-248 Backside
Gefen EXT-DVI-248 Backside

How the 2x8 DVI Distribution Amplifier works:
Connect one or two DVI graphics sources to the 2:8 DVI DA's two inputs using the supplied DVI cables. Then you connect up to eight DVI displays to the eight DVI outputs on each unit. DVI output 1 is the primary connection and is used for the main display. DVI output 2 through 8 follow the main display (they display the same exact resolution).

Note: The DVI displays attached to the 2:8 HDTV Distribution Amplifier MUST be capable of the same common resolution in order to get a picture.

Gefen Distribution Amplifier Features:

  • Easily switch between two sources to eight simultaneous displays
  • Connects computers with DVI graphics to multiple DVI compatible monitors or projectors
  • Connects a HDTV source to multiple DVI compatible displays or projectors
  • Maintains high resolution video - beautiful, sharp HDTV resolutions up to 1080p, 2k, and 1920 x 1200 are easily achieved
  • Discrete IR remote (included)
  • Supports DDWG standard for DVI monitors
  • Uplink port for easy expansion up to 32 units / 256 DVI outputs
  • Fully HDCP Compliant

Gefen 2x8 DVI Distribution Amplifier Wiring Diagram
Gefen 2x8 DVI Distribution Amplifier Wiring Diagram

EXT-DVI-248 Package Includes:

  • 2:8 HDTV Distribution Amplifier
  • (1) 6 foot DVI cable
  • RMT-2IR Remote Control
  • 24V External Power Supply
  • Rack Ears

Gefen EXT-DVI-248 Specifications:

Height 1.75 in. (4.45 cm.)
Width 17 in. (43 cm.)
Depth 7.25 in. (18.42 cm.)
Shipping Weight 8 lbs. (4 kg.)
Rackmountable 1U rack space
Supply 24V DC
Consumption 60 watts (max)
Input Signal  
Video 1.2 volts p-p
DDC 5 volts p-p (TTL)
Video Amplifier Bandwidth 1.65 Gbps
Single Link Range 1080p/1920 x 1200
DVI Connectors DVI-I 29 pin female (digital only)