1998 The former Hitachi Cable News Release
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Announcing the development & the start of sales of cable for ultra high- speed LAN systems.
We would like to announce that, after a period of development, we have now started selling cable ( Giga HUTP Cable - GHUTP series) suitable for use with ultra high - speed LAN systems (Local Area Network: Giga bit Ether & ATM etc.).
GHUTP is our first cable that has 4 pairs of cable within 1 main one that is capable of corresponding to high speed transmissions of 1 giga bit. Recently, with the amount of data being transmitted by Network systems having increased sharply, the demand for higher speed transmissions has also been growing, as daily users want to achieve the highest speeds possible. Within this year there are plans to develop an ultra high - speed LAN system, officially regulated by IEEE, that can transmit even faster - up to one decimal place higher - than the current one.
In light of this there will be demand for LAN use cable that can reliably stand up to ultra high - speed data transmissions.
Because of the need for far greater accuracy in information transmission in Information Networks as compared to Telephone Networks etc., ISO/IEC etc., has established regulations that govern the degree of apparent cross talk between the cable pairings. However, in the past only 2 pairs of cables out of the 4 pairs have needed to be utilised, so only the near end cross talk from the transmitter has been subject to regulation. With ultra high - speed data transmission LAN Systems like the giga bit Ether, needing to use all 4 pairs, cross talk is detectable from the extra cables, thus meaning that it has become necessary to introduce a stricter measuring method. This method is called Power Sum Cross talk.
Regarding Power Sum Cross talk, our GHUTP not only regulates the degree of cross talk apparent at the near end but also can regulate the cross talk from the receiving, the far end cross talk.
From the beginning, the HUPT 5 cable was considered for use on high - speed LAN systems, and the Power Sum has already been tried, but further to this, the GHUTP cable has a margin of over 5 dB more.
Regarding Power Sum ARC, GHUTP considers, both the near end and far end detection as one of its greatest characteristics. When comparing signal levels and noise in Power Sum ACR's, our GHUPT Power Sum ACR does not interrupt the signal with noise, as it allows a complete transmission position up to a giga bit.
There are plans to regulate the Power Sum Cross talk & Power Sum ACR, in America under TIA/EIA and ISO/IEC but for compatibility with ultra high-speed LAN our GHUTP has the highest guarantee of efficiency.
Now we are selling pairs of 4 and 24 conducting, 0.5 millimeter GHUTP, but expect demand to increase for bigger cable pairings in the future.
IEEE:The Institute of Electrical and Electronics Engineers, Inc.
TIA:Telecommunications Industry Association
EIA:Electronic Industries Association
ISO:International Organization for Standardization
IEC:International Electrotechnical Communication