How to Build a Cat 5 Cable
541
Computers > Networks
Mar 1, 2007
Joe Hamilton
How to Build a Cat 5 Cable
STEP 1 - Stripping
Start by pulling out about 12 feet of bulk network cable to making the process a little easier. Carefully remove the outer jacket of the cable exposing about 1 1/4" of the twisted pairs. Be careful when stripping the jacket as to not nick or cut the internal wiring. After removing the outer case you will notice 8 wires twisted in pairs and a rip cord (white thread).
STEP 2 - Inspecting
Inspect the newly revealed wires for any cuts or scrapes that expose the copper wire inside. If you have breached the protective sheath of any wire you will need to cut the entire segment of wires off and start over at step one. Exposed copper wire will lead to cross-talk, poor performance or no connectivity at all. It is important that the jacket for all network cables remains intact.
STEP 3 - Preparation
To prepare the wires and to make them easier to work with, you can untwist the pairs so they will lay flat between your fingers. The white piece of thread can be cut off even with the jacket and disposed.
STEP 4 - Layout
Now based on the wiring specifications you are following you will need arrange the wires in a certain pattern. There are two methods set by the TIA, 568A and 568B. 568B is the most common network cables, widely used for computer networks and digital phone systems. So for our demonstration we will use that. Starting from the left-top side of the RJ-45 plug, the wiring should be in the order shown at the right.
STEP 5 - Jack Preparation
Again, press all the wires flat between your thumb and forefinger as shown in step three. Verify the colors have remained in the correct order. Using a pair of scissors, cut the top of the wires even with one another so that they are 1/2" long from the base of the jacket. Ensure that the cut leaves the wires even and clean; failure to do so may cause the wire not to make contact inside the jack.
STEP 6 - Wire Insertion
Ensuring that the wires remain flat and in order, push them into the RJ-45 plug with the flat surface of the plug on top. The white / orange wire should be on the left looking down at the jack. You can tell if all the wires made it into the jack and maintain their positions by looking head-on at the plug. You should be able to see a wire located in each hole, as seen at the bottom right. You may have to use a little effort to push the pairs firmly into the plug. The cabling jacket should also enter the rear of the jack about 3/16" to help secure the cable once the plug is crimped.
STEP 7 - Crimping
Now place the wired plug into the crimping tool. Give the handle a firm squeeze, you should hear a ratcheting noise as you continue. Once you have completed the crimp, the handle will reset to the open position.
STEP 8 - Testing
Once your new cable is completed, it is not a bad idea to test the cable to ensure that it will function in the field. It is vital that all eight wires have connectivity and are in the correct order. Mis-wired network cables could lead to headaches down the road. In addition, with power-over-ethernet making its way into the market place, crossed wire pairs could lead to physical damage of computers or phone system equipment; making it even more crucial that the pairs are in the correct order. A simple cable tester can quickly verify that information for you.
You can find these instructions with pictures Here Comtrad Cable
Start by pulling out about 12 feet of bulk network cable to making the process a little easier. Carefully remove the outer jacket of the cable exposing about 1 1/4" of the twisted pairs. Be careful when stripping the jacket as to not nick or cut the internal wiring. After removing the outer case you will notice 8 wires twisted in pairs and a rip cord (white thread).
STEP 2 - Inspecting
Inspect the newly revealed wires for any cuts or scrapes that expose the copper wire inside. If you have breached the protective sheath of any wire you will need to cut the entire segment of wires off and start over at step one. Exposed copper wire will lead to cross-talk, poor performance or no connectivity at all. It is important that the jacket for all network cables remains intact.
STEP 3 - Preparation
To prepare the wires and to make them easier to work with, you can untwist the pairs so they will lay flat between your fingers. The white piece of thread can be cut off even with the jacket and disposed.
STEP 4 - Layout
Now based on the wiring specifications you are following you will need arrange the wires in a certain pattern. There are two methods set by the TIA, 568A and 568B. 568B is the most common network cables, widely used for computer networks and digital phone systems. So for our demonstration we will use that. Starting from the left-top side of the RJ-45 plug, the wiring should be in the order shown at the right.
STEP 5 - Jack Preparation
Again, press all the wires flat between your thumb and forefinger as shown in step three. Verify the colors have remained in the correct order. Using a pair of scissors, cut the top of the wires even with one another so that they are 1/2" long from the base of the jacket. Ensure that the cut leaves the wires even and clean; failure to do so may cause the wire not to make contact inside the jack.
STEP 6 - Wire Insertion
Ensuring that the wires remain flat and in order, push them into the RJ-45 plug with the flat surface of the plug on top. The white / orange wire should be on the left looking down at the jack. You can tell if all the wires made it into the jack and maintain their positions by looking head-on at the plug. You should be able to see a wire located in each hole, as seen at the bottom right. You may have to use a little effort to push the pairs firmly into the plug. The cabling jacket should also enter the rear of the jack about 3/16" to help secure the cable once the plug is crimped.
STEP 7 - Crimping
Now place the wired plug into the crimping tool. Give the handle a firm squeeze, you should hear a ratcheting noise as you continue. Once you have completed the crimp, the handle will reset to the open position.
STEP 8 - Testing
Once your new cable is completed, it is not a bad idea to test the cable to ensure that it will function in the field. It is vital that all eight wires have connectivity and are in the correct order. Mis-wired network cables could lead to headaches down the road. In addition, with power-over-ethernet making its way into the market place, crossed wire pairs could lead to physical damage of computers or phone system equipment; making it even more crucial that the pairs are in the correct order. A simple cable tester can quickly verify that information for you.
You can find these instructions with pictures Here Comtrad Cable
Write a Review
Add to My Favorite
Refer it to Friend
Report Article
Other links owned by this user
STEP 1 - Sripping Sar by pulling ou abou 12 fee of bulk nework cable o making he process a lile easier. Carefully remove he ouer jacke of he cable exposing abou 1 1/4" of he wised pairs. Be careful when sripping he jacke as
Category:
Other links at Computers > Networks
Most people are aware that there are continuous security issues with Microsoft?s Windows operating system and other programs. However, what most people do not realize is how easy it is to significantly improve your computer?s security and reduce the
Category:
If you hate having to turn on a modem every time you use another computer on your wireless network, get ready to be happy.
Category:
One of the fastest growing and most exciting technologies these days is devices that use some sort of wireless network.
Category:
The idea of reading email while lounging by the pool, text or instant messaging while ing the laundry, or lounging in the Jacuzzi listening to your MP3 collection is appealing to us all. Unfortunately, many, or even most, wireless units
Category:
With everything becoming available wireless these days a great innovation is the wireless media router. What is a wireless media router? It?s a router that allows the transmission of signals from the router to anywhere in the house that has a
Category:
Site Sponsor
Directory Statistics
Articles: 68234
Categories: 501
Yahoo Entertainment
