Gefen 1x8 HDTV Distribution Amplifier



Replaced by: Gefen EXT-DVI-148
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The Gefen EXT-HDTV-148S is a 1:8 HDTV Distribution Amplifier which allows you to send one source of digital high definition video to multiple displays at the same time. This HDTV distribution amplifier supports all DVI equipment, such as computers, HD-DVD players and satellite set top boxes and all DVI displays. DVI (digital visual interface) is a common connector used throughout the industry to connect digital video displays to video sources.

For home theater applications, the unit is HDCP (high bandwidth digital content protection) compliant, making it effective for use with all HDTV displays. HDCP is a standard "key" encoded into the DVI signal to prevent video data from being pirated. HDCP was strongly endorsed by the entertainment industry. If a source device is HDCP coded and is connected to a HDTV display or projector via DVI without the proper HDCP decoding mechanism, the picture is relegated to "snow" or in some cases, a very low (480P) resolution. In order to see protected content, the source, the display and any device in between must be equipped with DVI connections that can enable HDCP using "software key" decoding.

Gefen 1x8 HDTV DA Backside
Gefen 1x8 HDTV DA Backside

How the 1x8 HDTV distribution amplifier works:

Connect your DVI video source to the 1:8 distribution amplifier's input using the supplied DVI cable. Then connect up to eight DVI displays to the unit's eight DVI outputs. Once connected and powered, your video source will be seen on all eight displays at the same time.

Note: DVI output 1 is the primary connection and is used for the main display. DVI output 2 through 8 follow the main display. The DVI displays attached to the 1:8 HDTV Distribution Amplifier MUST have the same native resolution in order to get a picture.

Gefen EXT-HDTV-148S Features:

  • Connects computers with DVI graphics to multiple DVI compatible monitors or projectors
  • Connects a HDTV source to multiple DVI compatible displays
  • Allows simultaneous display
  • Maintains 480p, 720p, 1080i, and 1080p resolutions
  • Maintains high resolution video - HDTV resolutions up to 1080p, 2k, and computer resolutions up to 1920 x 1200
  • Supports DDWG standard for DVI monitors
  • HDCP compliant

Gefen EXT-HDTV-148S Package Includes:

  • 1:8 HDTV DA
  • (1) 6 foot DVI cable
  • 24V External Power Supply
  • Rack Ears

Gefen EXT-HDTV-148S Specifications:

Height 1.75 in. (4.45 cm.)
Width 17 in. (43 cm.)
Depth 7.25 in. (18.42 cm.)
Rack Space 1U
Shipping Weight 8 lbs. (4 kg.)
Supply 24V DC 
Consumption 60 watts (max)
DVI DVI-I 29 pin female (digital only)
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