Posts Tagged ‘solid conductor’


Cat5 Cable

Cat5 Cable

Cat5 Cable

By Anne Ahira

CAT5 cable, which is the shortened version of Category 5 cable, is a high signal integrity twisted pair cable type. It can come in shielded or unshielded cable versions.

It is mainly used for computer networks as in the Ethernet, or for structured cabling. It may also be used to carry other signals such as ATM, token ring, and possibly just voice service.

The specified performance characteristics of CAT5 cable can be found in a document called ANSI/TIA/EIA-568-A, with further clarifications that are found in TSB-95.

There are twisted pairs held in a single cable jacket specifically within all CAT5 cable. The reason for this is that it preserves the high signal-to-noise ratio to prevent crosstalk.

CAT5 cable is mostly used in 100 Mbit/s networks. Typically CAT5 cable features three different twists for each inch of twisted pair 24 gauge copper wires inside each cable.

Enhanced versions of CAT5 cable have been designed, thus now CAT5 cable is being phased out in favor of CAT5e cable. The test methods and the characteristics of the CAT5e cable are defined in TIA/EIA-568-B.2-2001.

CAT5e cable has much stricter performance specifications, however it still does not provide longer cable distances in the instance of Ethernet networks. Those particular cables still must adhere to 328 feet (100m) in length that allows for 5m of end patch cable that needs to be at each end.

There are two types of CAT5 cable, solid conductor and stranded form. Each will be used depending on whether one is using insulation piercing connectors or insulation displacement connectors.

Stranded CAT5 cable is a higher flexible cable thus it can be used with insulation piercing connectors and still retain a reliable connection. When used, however, with insulation-displacement connectors then it makes highly unreliable connections.

Thus, building wiring will be solid core, however the movable cable that you use to plug your computer into a wall socket, for example, will be using the stranded form. CAT5 cable is ordinarily connected with 8P8C modular connectors.

Mixed cable types, solid core and stranded, ought not to be connected in series because the impedance per pair will of course differ slightly, thus that may cause signal degradation.

One may actually find CAT5 cable that has been “UV rated.” This means that it may be open to the elements to outdoor UV radiation and still not suffer significant destruction.

There is also CAT5 cable that is rated as suitable for “direct burial,” when the cable must be placed underground. In order to hinder any moisture migration into the cable, ordinarily this cable will be gel filled.

A very interesting tip that all cable installers know when using CAT5 cable on a tower is that because vertical cables will channel water directly into sensitive indoor equipment, they will therefore add a drip-loop at the underside of any run of cable.



Cat5E Cable

 

Cat5E Cable

Cat5E Cable

By Anne Ahira

Category 5 cable or CAT5, as it’s referred to more often, is a twisted pair high signal integrity cable type. Such cables come in shielded or unshielded versions.

However, now CAT5 cable has been superseded by the brand new Category 5e cable specification structured cabling which is utilized primarily for computer networks, as used in Ethernet usage.

CAT5e is moreover used in order to carry many other signals. These include different signals such as ATM Asynchronous Transfer Mode, token ring–defined as a local area network technology in a local area network protocol, and also basic voice services.

There are twisted pairs held in a single cable jacket specifically within all CAT5e cable. The reason for this is that it preserves the high signal-to-noise ratio to prevent crosstalk.

CAT5e cable is mostly used in 100 Mbit/s networks. Typically this kind of cable features three different twists for each inch of twisted pair 24 gauge copper wires inside each cable.

The test methods and the characteristics of the CAT5e cable are defined in ANSI TIA/EIA-568-B.2-2001. The newer cable has much stricter performance specifications than the CAT5 that it replaces, however it still does not provide longer cable distances in the instance of Ethernet networks.

Those particular cables still must adhere to 328 feet (100m) in length that allows for 5m of end patch cable that needs to be at each end. However, the specifications for CAT5e add some very special specifications to far end crosstalk.

Cross talk signals that are transmitted on a CAT5e cable are defined as some sort of undesired effect happening to yet another circuit or channel than the one being used in that particular cable.

Ordinarily cross talk is often caused by undesired conductive coupling, inductive, or capacitive information from one circuit or channel to yet another. This is why the CAT5e cable systems use the twisted pairs when making analog connections.

Also, the signals may well be converted to digital form, thus rendering the signals to become much less susceptible to crosstalk. The simple description of crosstalk is when one signal affects another nearby signal.

CAT5e cables come in two forms, the stranded and the solid conductor form. The stranded form is considered to be much more flexible so that it can be used around corners and such.

The solid form is much cheaper and sometimes has been used unscrupulously instead of the better stranded form. This results in extremely unreliable connections as the solid conductor form cable may well break when someone tries to force it around a corner, for example.