Making a Straight Thru Cable

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Making a Straight Thru Cable
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This PowerPoint is to show the procedures on how
to safely, efficiently make a cable that adheres
to the 568A Ethernet Standards. These cables
are to be used for Ethernet (10BaseT) and Fast
Ethernet (100BaseT) Pay attention, the quality
and speed of your connection depends on the
quality of your cable!
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Tools

• Electricians Scissors are for cutting and
  stripping insulation
• Dikes or Diagonal Cutters are used for cutting
  cable

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Tools

• Crimpers are used for cutting wire, stripping
  insulation and crimping the connector to the wire

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Tools

• Cable Testers are used to check the continuity of
  cables
• These testers only check whether current will
  pass through the cable, it does not check the
  resistance of the cable

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Tools

• Multi meters are used to check the resistance of
  the finished cable.
• Low resistance is desired

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Lets Get Started!

• Organize your tools and work area
• Observe all safety precautions
• Measure twice and cut once
• Add an extra twelve inches to allow room

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Pull wire

• Pull wire smoothly from the box
• The box must be standing up
• If the wire starts to kink, stop pulling and
  correct the kink
• Kinks in the wire can cause poor signal quality

Box in Upright position
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• Use the electricians scissors or the dikes to cut
  the cable
• Add 12 inches to your measurements

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• Expose about one inch of the inner wires
• Be careful to not strip the insulation off the
  inner wires

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Another Way to Strip the Jacket

• Expose about one inch of the inner wires
• Be careful to not strip the insulation off the
  inner wires

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Comb Out the Wires

• Put the wires in order from left to right
• Using your thumb and forefinger, comb out the
  wires and order according to the 568-A Standard

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• Using the dikes or electrician scissors, trim the
  wires to an even haircut
• Leave only ½ of unjacketed wires

Trim the Wires
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Top
Slide the Wires into the Connector

• After the wires are in the correct order, slowly
  slide them in the RJ 45 connector
• Hold the connector with the prong on the bottom

Bottom
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Push the Wires in All the Way

• The wires need to go all the way to the front of
  the connector
• They are clear to allow you to see the ends
• Be sure the the jacket extends to under the
  crimping area

Crimping area
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The Side View
Ends need to go to the front
The side view is useful to determine if the wires
have extended all the way to the front of the
RJ-45
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Push the Connector and Wire into the Crimper

• Orient the connector to the crimper
• Hold the wire firmly
• Put inward pressure on the wire

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Crimp

• Crimp the connector with both hands
• Dont over crimp by forcing down on a table or
  floor, because you can push the contacts too
  deeply in the RJ 45 so they wont contact when
  connected in the jack

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Test the Continuity

• The cable tester check to each wire is connected
• When you push the button, it checks the next wire
  in line
• If done properly, the no. 1 should light up the
  no. 1 on the other side

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• What to do if you have a Problem

• First, determine what went wrong
• If the lights dont match on each side, (no.1 on
  the left side and no. 2 on the right) you will
  have to look at which, or both, sides are wired
  incorrectly. After you determine which is wired
  incorrectly, cut off that end and get a new
  connector from you teacher and start again
• If one side lights, but the other side doesnt,
  try re-crimping the side that didnt light and
  re-test