Building a T568B Network Cable

1
Building a T568B Network Cable

• Examples of good and bad cables
• Identification of components
• Critical areas of cable

2
Cable Connectors

• UTP (unshielded twisted pair)
• STP (shielded twisted pair)
• Plenum rated jacket
• Solid versus Stranded wire
• Cable ratings or Categories
• RJ45 connectors

3
Tools

• Modular Plug Crimp Tool
• Universal UTP Stripping Tool

4
Color Code Standards

• 568B most common standard

5
Lets Build A Cable

• Using stripping tool cut approximatelyhalf an
  inch of insulation off the end of the cable.
• Caution
• Be careful not to nick the wires.

6
Straighten Wires
Untwist the pairs and arrange the wires in the
order of the desired cable end.  Flatten the end
between your thumb and forefinger. Trim the ends
of the wires so they are even with one another.  
AttentionIt is very important that the
unstripped (untwisted) end be slightly less than
1/2" long.  
7
Attach RJ-45 Plug

• Hold the RJ-45 plug with the clip facing down
  or away from you.  Push the wire firmly into the
  plug.  Now, inspect it before crimping and
  wasting the plug! The wires should alternate
  light and dark from left to right.  The furthest
  right wire is brown.  The wires should all end
  evenly at the front of the plug.

8
Crimp RJ-45 Connector

• Hold the wire near the RJ-45 plug with the
  clip down and firmly push it into the left side
  of the front of the crimper (it will only go in
  one way).  Hold the wire in place squeeze the
  crimper handles quite firmly. 

9
About Crimping

• The crimper pushes two plungers down on the
  RJ-45 plug.  One forces what amounts to a
  cleverly designed plastic plug/wedge onto the
  cable jacket and very firmly clinches it.  The
  other seats the "pins," each with two teeth at
  its end, through the insulation and into the
  conductors of their respective wires.

10
What Now?

• Congratulations! You are halfway there. Now do
  the other end of the cable. When you are finished
  you can test your cable.

11
Testing

• Plug the ends of the cable you made into the
  openings on the cable tester.Turn unit on and
  observe readings.
• Many testers are available and will vary in
  the testing methods and ways in which to display
  results.

12
Cable Grading Rubric
 
13
Grade