By Staff, September 30, 2003
Opticomm Corp.(Booth 3053) is spotlighting the DVX-5400, a new multiplexer that transmits four channels of uncompressed serial digital video across one laser. The latest addition in the DigiBandO line, the DVX-5400 uses Time Division Multiplexing (TDM) to create an efficient transmission system that eliminates the need for one laser per channel of video. It also eliminates the need for assigning an independent bandwidth to each channel, leaving it available for other assignments.
"The cost-saving alone in lasers makes the DVX-5400 an important cost-saving innovation," says David Caidar, CEO at Opticomm Corp. "Expanding the practical use of existing fiber cabling is of great value to broadcasters...we're giving them the flexibility to send more information than ever before."
The DVX-5400 utilizes Time Division Multiplexing (TDM) to assign recognition keys to each channel, which travels across the optical fiber to the receiver
. The recognition keys identify the start of each channel and place them in their proper doorway. Each packet of four channels can be transmitted at the same bandwidth (with its own place in the time continuum) to: electronically combine four channels of uncompressed digital video (each with audio and data embedding, AES/EBU per SMPTE 259M) using only one laser, versus one laser per channel; deliver a payload for each channel of 270 MB, multiplied by four channels, for a net payload of 1.080 GB. (when paired with ancillary data for additional high-speed data channels, the overall payload is up to 2.160 GB); maximize usage of existing fiber cabling; work in tandem with CWDM to increase the broadcast channels exponentially; provide the industry's lowest bit error rate at 10-14 (with 10-12 being the current standard); and save bandwidth, with four channels transmitted at 1310, rather than 1310, 1330, 1350 and 1390 (with CWDM alone) across one fiber.
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