| 单词 | STP |
| 释义 | STP 1. Shielded Twisted Pair. Synonymous with Shielded Foil Twisted Pair (SFTP), STP is a copper cable configuration comprising a metallic foil shield that surrounds each insulated pair, of which there may be several. An uninsulated steel or tinned copper conductor in contact with each inner shield serves as a drain wire, ensuring that the continuity of the shield remains intact in the event that the foil is broken or cracked.The core of shielded pairs is then surrounded by an overall metallic shield of metallic tape or braid, or both, which is encased in a thermoplastic cable jacket, as illustrated in Figure S-12. The outer shield typically consists of helically or longitudinally applied plastic and aluminum laminated solid tape, although it may comprise a woven mesh, and steel or copper may also be used. Each shield absorbs ambient energy and conducts it to ground through the drain wire, thereby protecting the signal transmitted through the center conductors.The shield also serves to confine the electromagnetic field associated with the transmitted 74570c19.qxd 9/12/07 12:41 AM Page 463 |
| 随便看 |
|
科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。