Patrick McLaughlin
Cabling-product manufacturer Berk-Tek (New Holland, PA) has developed an enhanced Category 5 unshielded twisted-pair product--the lanmark-1000 cable series. Available through the company`s distributor/representative network, the lanmark-1000 uses full-duplex operation over all four twisted pairs.
According to a press release issued by Berk-Tek, the new cable is designed for use with present and future applications, such as 1000Base-T, 622-megabit-per-second Asynchronous Transfer Mode, and digital and broadband video. The release also claims that use of all four pairs allows lanmark-1000 to offer more usable bandwidth than most existing cable solutions.
The cables comply with the tia/eia-568a commercial building telecommunications wiring standard, which specifies cable performance at 100 megahertz. Berk-Tek claims that knowing the cable`s performance at 100 MHz gives designers engineering information about the higher level of lanmark-1000 cable performance that can address future applications. The company also says the new cable is characterized for power-sum electrical parameters: power-sum near-end crosstalk, power-sum attenuation-to-crosstalk ratio, and power-sum far-end crosstalk.
According to the company, "In full-duplex operation, the electrical performance is more critical. lanmark-1000 is the first cable that sets requirements for cable balance--the performance parameter that affects emissions. Like impedance, balance is an indication of the quality and consistency of manufacture, which affects all other electrical parameters." The statement also says this cable`s attenuation characteristics are an improvement over those of existing cables.
Berk-Tek is a part of Alcatel Cable (Brussels, Belgium), a designer and manufacturer of copper and fiber data cables.
For more information on the lanmark-1000, call the company`s Literature Fulfillment Center at (717) 396-9792.