If suddenly there was a question about the home network or simply connect the computer to the router, modem or other device, and call the master is not possible, do not worry.The computer stores can be free to buy ready-made cables (patch cords) with different types of connectors already attached.If such a store is not nearby, or if you want to put the cable in places where the connectors will not have to spend crimping own.
This will require basic knowledge in the field of electronics as well as a certain type of cable, connectors, tools in the form of pliers crimp tester, screwdriver and knife.But before you start the installation, try to understand that what is intended is arranged as a crimp own network cable.
cable
in standard local area networks made use of wire, which is called "twisted pair".His name, he is obliged to the internal device, consisting of two, four or eight insulated copper or aluminum conductors, twisted pairs and prisoners to the external PVC insulation.The shell of each wiring for easy connection made in different colors.There are two kinds of cables: shielded surrounding layer of foil (FTP) and unshielded (UTP).
Use everything for your home network FTP-wire impractical, since the screen is designed to protect from the strong electromagnetic interference, as well as for operating the cable length of 100 meters.So it is quite suitable cheaper and a popular option UTP-cable, available at any computer store or market.Any "twisted pair" is divided into several categories depending on the number of veins, capacity and purpose.Labelled cable combination of letters and numbers from the CAT 1 to CAT-7.The most common vehicle for the equipment of local networks is a CAT-5 or its modification CAT5.It consists of four pairs of colored cores and provides data transfer up to 100 Mbit / s at a frequency of 100 MHz.
Connectors
All modern computer equipment intended for a wide use for network connections is a standard established by the plug connectors labeled 8P8C.Sometimes the connector for some reason the RJ-45.But whatever they are called, they have one purpose - to connect the "twisted pair" with any device.These plugs, as well as the cable may be shielded or not.The connector is a plastic head with eight grooves cut into it for the installation of live conductor.At the end of these slits are set movable contacts, which clamp the wire.When installing the numbering of the grooves is very important.If the connector and arrange the contacts facing up to his catch, it will be the first on the left and the right - the eighth contact.
scheme crimping network cable
There are two variants of the location of veins "twisted pair" in connectors:
- EIA / TIA-568A.
- EIA / TIA-568B.
first involves a sequence (left - right):
- White-Green.
- Green.
- White-orange.
- Blue.
- White and Blue.
- Orange.
- White-brown.
- Brown.
second circuit wires are arranged:
- White-orange.
- Orange.
- White-Green.
- Blue.
- White and Blue.
- Green.
- White-brown.
- Brown.
connection types
Option EIA / TIA-568A is used to produce crimp the power cable to be connected at one end to the computer, and the other - to one of the switching devices (routers, switches, modem, etc.).This type of connection is called direct.But there is another - cross or crossover.It is used to connect two computers directly.Direct crimping network cable connector is secured by the scheme EIA / TIA-568A at both ends.This is the most common type of connection, since it is usually used in local area networks for more than two computers connected via a switch or other types of switches.If you still need to interconnect two cars, use cross-connection.To compress network cable "computer-to-computer", followed by one end of the cable connected to the connector technology EIA / TIA-568A and the other - on the EIA / TIA-568B.For direct connection can not use all eight conductors, but only four, but the speed of data transfer with reduced 10 times.When connecting motocross use all 8 cores.
Cable Preparation
before conductor crimp should be cleaned from isolation.Cut the cable can be an ordinary knife, but how carefully it is done will depend on our performance patch cord and the quality of the data.External insulation is cut at a distance of 20-25 mm from the end.It is important not to damage the conductor insulation, which may lead to their subsequent circuit.Once the insulation is removed, it is necessary to unleash all the pairs and straighten them in order of EIA / TIA-568A or EIA / TIA-568B depending on the desired type of connection.
How to compress network cable Crimper
Wizard is used to special crimping pliers (Crimper).If the house did not find such a tool, it can be bought in any store where they sell radio parts.The cost of the simplest Crimper is about 200 rubles.Before you compress the power cord, make sure that the wires do not intersect.
Then insert them into the grooves of the connector up to the stop and fix.Visually make sure that all postings rested against the front wall of the connector head, none of them accidentally hit the "foreign track" and that the scheme is not broken crimp.After that, the connector is placed in a special working Crimper slot formed in the shape and the size of the connector and clamped against the stop.This operation is done, and the other end of the future patch cord.Check for proper connection can be LAN-tester, and in the absence thereof - by simply connecting a computer to a device through the network cable is crimped.
crimping without Crimper
If, however, there was no special tongs and buy them there is no way, there is an option as to compress the power cord by hand.It is useful to good vision and a thin screwdriver or knife.Cleaning the "twisted pair" of outer insulation and expanding its core in order, put them into the connector, and again fix the fingers.Plug with the contacts must be upward.
rested against the lower part of the connector in a table or other horizontal surface, you need a screwdriver or knife to move them one by one all the way down.This will cut the teeth contact insulation wires and secure them in the down position.Buying connectors and crimp planning their hand, it is better to take a few extra, because the first time may not be possible, and will again run to the store.
Common Errors When crimping often there are situations when everything seems to be done right, but there is no connection.In this case, verify the layout lived and double-check it for compliance with the type of connection.
If everything is correct, you need to make sure that all wiring is securely connected to the connector contacts.It is also possible when the top is cut too insulation and conductor patch cord, twisting, or may confine the contrary, to move away from the contact.In such cases, cut the cable and crimp hold again.
