Technology Showcase: Fiber-optic Video Extenders
Mar 1, 2009 12:00 PM, By Bennett Liles
Video signals ride the light to far-off places.
The DDI series DVI extension cable system from Ophit is intended for long-distance signal distribution to flatpanel displays. The system consists of two male DVI-D transmitter and receiver module/connectors joined by hard polymer-clad fiber (HPCF) and copper cable. The DDI series features automatic EDID detection using the copper wire within the cable's outer jacket. The RGB video and clock signals are carried over the four HPCF lines. The product supports VESA resolutions up to 1920×1200, is fully compatible with DVI 1.0 standards by DDWG, and extends the video up to 330ft. The DDC signal and 5VDC power are carried on the copper line within the cable, and the product is available in cable lengths from 10 meters up to 100 meters. For situations in which adequate power is not available at the source, an external 5V power supply can be purchased. Ophit markets the system for digital signage, military, sports venues, conference rooms, and kiosk applications.
The Opticis M5-1003 optical DVI/RS-232/USB/audio extender handles the long-distance transmission of multiple signals in many applications up to 6600ft. for DVI with 24-bit color and 60Hz refresh rate. The audio is stereo, and the USB support is for version 1.1 at 12Mbps. The fiber link consists of four single-mode or multimode fiber lines on two duplex or four single-LC connections that also carry support for the DDC command interface and automatic EDID programming. This feature detects EDID data from the display and restores it to an EEPROM in the transmitter simply by connecting the display. The transmitter and receiver modules are each powered by a 12VDC 3A power adapter. The audio interface is a 3.5mm mini jack, and the RS-232 connects on the receiver with a male DB9 and on the transmitter with a female DB9.
The QuStream QFX Quadbox extender modules are part of the company's newly developed QFX series, and they provide copper-to-fiber conversion for increased port density and routing-system cost savings. The units can support up to four SDI, HD-SDI, or 3G-SDI signals using a 2.97Gbps transport on each fiber terminal. With SFP fiber connections, the units can be used in a field-throwdown or 1RU rackmount installation. Up to four units can be mounted in a 1RU space with support for redundant power. The product is compliant with SMPTE 259M, 292M, 372M, and 424M video standards, allowing high-definition video as well as DVB-ASI. With single-mode fiber, the units can send video up to 6.2 miles, and with multimode fiber, distances up to 1960ft. are supported. The modules are made to operate seamlessly with any of QuStream's HD router systems. A simple GUI is supplied for easy setup.
RapcoHorizon's HDMI-X-Kit is offered as a solution for extending uncompressed HDMI video and audio up to 330ft. The kit includes two 2-meter HDMI cables, one transmitter, one receiver, a four-strand 50/125µm fiber-cable assembly, one Cat-5e cable, and a 12VDC power supply. The four fiber-termination points use LC connectors. The transmitter and receiver modules support resolutions up to WUXGA, are optimized for high-definition multimedia, and are HDCP-compliant. The kit is marketed for applications such as videowall systems, large LED sign boards, medical imaging equipment, home theater, and broadcast.
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