Correct selection of shielded cable and not shielded cable

Screen cable and the shield, and exactly what kind of cable for copper structured cabling network provides the best solution, in the industry has been a long time. Choose unshielded twisted pair (UTP) cable and foil twisted-pair (FTP), or the United States the well-known shielded twisted-pair cable (ScTP) is not an easy decision. In fact, from a variety of options, select the appropriate shielding technology, and ensure the correct installation and operation of the technology, has been far more important than the choice of the FTP or UTP.

General practice is different all over the world. In Britain, most of Europe, the United States and Asian countries, usually the UTP cable as the most economical, and enough to satisfy most of the installation requirements of options. In Germany and other European countries, including France, Switzerland and Austria, FTP is dominant. When installing a system, one of the real problem is data integrity. The basic goal of shielding system is to prevent the potential electromagnetic interference (EMI) of data, such as industrial facilities and airports and operation key systems, such as military bases and the hospital.

Design and install the correct FTP wiring network will undoubtedly improve the signal integrity on shielding system. However, Jiansu Yafei Wire & Cable Co., Ltd alert users, in order to work efficiently, shielding grounding must be correct. In fact, this is not always easy to achieve. Bad earth shielding system will actually start using the shielding system provides worse performance levels. In the worst case, the block itself could become a radiation source, generates current grounding loop, or receive the surrounding radiation, the new data Cable of the phase led to harmful interference.

The type of shielding
Shielding is divided into several different types. Two or more conductor or four cable can pack into a whole block. In addition, the stranded cable each line also can block alone. In addition, these separate shielded cable can or can't cover the second overall shield. Whatever the design, in order to ensure effectiveness, shielding must be from end to end on the electron is continuous, and properly grounded. When choosing shielding wiring system, choose the overall end-to-end solutions is also very important. The different systems of mix component, may be caused by the impedance mismatch problem. Shielding system cost, including the required additional installation work, usually the same UTP solution for 20-30%.