Crimping
Upcoming SlideShare
Loading in...5
×
 

Crimping

on

  • 579 views

 

Statistics

Views

Total Views
579
Views on SlideShare
579
Embed Views
0

Actions

Likes
0
Downloads
16
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Crimping Crimping Document Transcript

  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page1 1. What is Crimping tool? A crimping tool is a tool designed to crimp or connect a connector to the end of a cable. For example, network cables and phone cables are created using a crimping tool to connect the RJ-45 and RJ-11 connectors to the end of the cable. In the below example picture, this crimper is capable of crimping a RJ-11 (6-Pin) and RJ-45 (8-Pin) connectors and also includes a wire cutter near the handles that can be used to cut phone or CAT5 cable[1] . To use this crimping tool, each wire is first placed into the connector. Once all the wires are in the jack, the connectors with wires are placed into the crimping tool, and the handles are squeezed together. Crimping makes the plastic connector puncture and hold each of the wires, which prevents the wires from falling out and for data to be transmitted from the connector to each of the wires[1] . Fig.1Crimper with RJ-45 Fig.2 Cable and RJ-45 Connector [2]
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page2 2. Wire Color Scheme: Table1. Wire Color Scheme[3] Patch Cable Pin Color Diagram (Straight Through) 1. Orange / White Both ends follow this 2. Orange 3. Green / White format. 4. Blue 5. Blue / White 6. Green 7. Brown / White 8. Brown Crossover Cable Pin Color Diagram One end as a patch cable 1. Green / White 2. Green and the other as follows 3. Orange / White 4. Blue 5. Blue / White 6. Orange 7. Brown / White 8. Brown 3. Steps for Crimping RJ-45 connectors are normally used in telephone and network cables. Occasionally they are used for serial network connections. When the RJ-45 connectors first came into use, they were primarily used for telephones. The great advances in technology created a need for another size connector and the RJ-45 was adapted to fit. Today there are 2 different RJ-45 connector sizes available, 1 for Cat 5 cable and 1 for Cat 6 cable. The user has to make sure they have the one suited to their job. The easiest way to tell them apart is to compare them side by side. The Cat 6 connector is larger than the Cat 5 connector. Below are instructions for crimping RJ-45 connectors to a cable[2] .
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page3 Step1:- Purchase your cable and your RJ-45 connectors. Most Ethernet cable is sold on spools of varying lengths, so you might have to measure and cut the amount you need when you get home[2] . Step 2:- Carefully remove the outer jacket of the cable. Be careful when stripping the jacket as to not nick or cut the internal wiring. One good way to do this is to cut lengthwise with snips or a knife along the side of the cable, away from you, about an inch toward the open end. This reduces the risk of nicking the wires' insulation. Locate the string inside with the wires, or if no string is found, use the wires themselves to unzip the sheath of the cable by holding the sheath in one hand and pulling sideways with the string or wire. Cut away the unzipped sheath and cut the twisted pairs about 1 1/4" (30 mm). You will notice 8 wires twisted in 4 pairs. Each pair will have one wire of a certain color and another wire that is white with a colored stripe matching its partner Step 3:- 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. Fig.3Folding pair [2] Step 4:- 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 (see Warnings). For easier handling, cut the wires so that they are 3/4" (19 mm) long from the base of the jacket and even in length.
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page4 Step 5:- Arrange the wires based on the wiring specifications you are following. There are two methods set by the TIA, 568A and 568B. Which one you use will depend on what is being connected. A straight-through cable is used to connect two different-layer devices (e.g. a hub and a PC). Two like devices normally require a cross-over cable. The difference between the two is that a straight-through cable has both ends wired identically with 568B, while a cross-over cable has one end wired 568A and the other end wired 568B.[2] For our demonstration in the following steps, we will use 568B, but the instructions can easily be adapted to 568A. 568B - Put the wires in the following order, from left to right:  white orange  orange  white green  blue  white blue  green  white brown  brown 568A - from left to right:  white/green  green  white/orange  blue  white/blue  orange  white/brown  brown Step 6:- You can also use the mnemonic 1-2-3-6/3-6-1-2 to remember which wires are switched.
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page5 Fig.4 Types of Cable Arrangement Step 7:- Trim the untwisted wires to a suitable length by holding the RJ-45 connector next to the wires. The insulation on the cable should be just inside the bottom of the RJ-45 connector. The wires should be trimmed so that they line up evenly with the top of the RJ-45 connector[2] Fig.5Cutting the wires [2] Trim the wires in small increments, checking frequently to ensure a correct fit. It's better to cut the untwisted wires a few times than have to go back and start all over again because you trimmed off too much. Fig.6Checking the wires [2]
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page6 Step 8:- Insert the wires into the RJ-45 connector, making sure that they stay aligned and each color goes into its appropriate channel. Make sure that each wire goes all the way to the top of the RJ-45 connector. If you don't make these checks, you will find that your newly crimped RJ-45 connector is useless[2] . Fig.7Insert into RJ-45 [2] Step 9:- Use the crimping tool to crimp the RJ-45 connector to the cable by pressing the jacket and cable into the connector so that the wedge at the bottom of the connector is pressed into the jacket. Recrimp the cable once more to ensure proper connection[2] . Fig.8Crimping tool [2] Step 10:- Repeat all of the above steps with the other end of the cable. The way you wire the other end (568A or 568B) will depend on whether you're making a straight-through, rollover, or cross-over cable Step 11:- Test the cable to ensure that it will function in the field. Miss-wired and incomplete network cables could lead to headaches down the road. In addition, with power-over
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page7 Ethernet (PoE) 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. Should you not have a network cable tester on hand, simply test connectivity pin to pin. Fig.9Cable tester [2]
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page8 Conclusion In this report gives us to what is crimping Tool means a tool designed to crimp or connect a connector to the end of a cable. For example, network cables and phone cables are created using a crimping tool to connect the RJ-45 and RJ-11 connectors to the end of the cable. To use this crimping tool, each wire is first placed into the connector. Crimping makes the plastic connector puncture and hold each of the wires, which prevents the wires from falling out and for data to be transmitted from the connector to each of the wires. And this report gives steps for Crimping process.
  • CRIMPING PROCESS Akshay N Mahajan(120573116004)5th sem IT Page9 References 1. http://www.computerhope.com/jargon/c/crimp.htm 2. http://www.wikihow.com/Crimp-Rj45 3. http://vspclil-physicallayer.wikispaces.com/file/view/StudentExam.PDF