Creative USB Adapter CB2431 Manual do Utilizador descarregar pdf (Página 114)

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HDCS

Glossary

HDCS

Glossary



   



Coating

    

protect it from the environment and handling.

 The twisted pair version of 100 Mbps Ethernet. Coax

Short for coaxial. Single-conductor cables with braided

shields. Used in the 80's for data transmission. Now

generally replaced with UTP for data. Still used for video.



   

coaxial cable.

Conduit

Pipe or tubing through which cables can be pulled of

housed.



  

cable.

Connector

    

together to provide a means for attaching to and



  SFF 

110 Connector

  

modular jacks, patch panels and cross connects.

Consolidation

point



be split into two parts. Used for zone cabling.

66 Block  Core



is transmitted.



   



Coupling 

  Data rate

The speed, measured in bits per second, that a particular

network (or other application) transmits data.

 

Strength elements that provide tensile strength and provide



 

powers, voltages or currents.

  Delay skew

The difference in propagation delay between the slowest

and fastest pairs in a cable or system.



The amount of signal lost as it travels through the cabling



Dispersion



causes a broadening of input pulses along the length

  

2.chromatic dispersion. 3.waveguide dispersion.

Backboard

Refers to a plywood panel mounted on the wall of a

telecom closet. Used to mount the cross connect.



 

which accounts for the attenuation of the cabling system.

Backbone

cabling

   

in a campus.

EMI Electromagnetic Interference.

Bandwidth

Measure of the information-carrying capacity of a copper



Enhanced



  

  

to 100 MHz.

Balun



to twisted pair cabling.

ESCON Enterprise Systems Connection.

Bend Radius

The minimum recommended bending radius during

installation of after installation where cable damage will

not occur. Cable bend radius during installation infers that

the cable is experiencing a tensile load. Free bend infers

a smaller allowable bend radius since it is at a condition of

minimal load.

Ethernet

  

is a set of rules enabling data communications. Based

originally on a bus topology.

BER Bit Error Rate. F connector





BNC  Ferrule

   

protect and align a fiber in a connector. Generally



Buffering  

Far End Crosstalk. Unwanted noise coupled onto a

receive pair from a transmit pair at the far end of the

system.



  



voice and data applications up to 10 Mbps.

Fiber Optics

 

communication or signaling.



  



Gbps



bits.







to 100 MHz.

Gigabit

Ethernet

The newest (1999) and fastest version of Ethernet. Data

rate is 1000 Mbps or 1 Gigabit per second.



  

connectors and systems. Specified up to 250 MHz.

Suitable for voice and data applications up to 1000 Mbps.

Gigahertz



second, GHz.

Channel

The entire horizontal cabling system. Everything between

    

excluding the equipment connections.

Horizontal

cabling

That portion of the telecommunications cabling that

provides connectivity between the horizontal cross-

connect and workarea telecommunications outlet.

Cladding

The material surrounding the core of an optical waveguide.

The cladding must have a lower index of refraction to keep

the light in core.

Hub

Network device, usually in the telecom closet, that

stations connect to.

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