How to make a crossover cable -UTP
What you require for this workshop
A minimum of two plastic RJ-45 connectors, a 5 meter CAT5 cable (the length will depend on your requirement), and RJ-45 crimping tool.
Tips: CAT 5 Maximum Length = 100 meters
Measure the required distance between the laptop and the desktop and cut off the required length of the CAT 5 cable. Now take one end of the cable and peel off approximately 2.5 cm of the insulating sleeve using the stripper portion of the crimping tool.
Separate the four colored wire pairs from each other.
Note: Some cables have white wires coded with lines or dots to mark the pair while some cables don't. Remember that each wire pair will be twisted around each other to denote the pair.
Cut off any two pairs that you won't be using to make the cross cable. (Only four wires or two pairs are needed for connectivity). We chose to keep blue and orange pair and chopped off the remaining two pairs.
Now straighten all the wires in a neat line and align them in the following manner;
- White Orange : Orange : White Blue : Blue.
The next step is to cut off the edges of the wire using the cutter of the crimping tool in a manner that all the wires are now of the exact same length.
Note: Do not cut the wires too much because if the length of the wires is too short, they may not be properly crimped inside the RJ45 connector. The length of the wires coming out of the sleeve should not be longer or shorter than 1.5 cm.
Now separate the last wire (Blue) from the others keeping a gap of around 1/2 cm. This is because the first three wires would connect to pin numbers 1, 2 & 3 and the last wire would connect to pin number 6 of the RJ45 connector.
Take a good look at the RJ45 connector. Hold it in the same direction as shown in the image with the plastic lock facing away from you and the golden leads facing upwards. Now note the pin numbers (see picture) because the next steps would completely depend on straining your eye correctly insert the right wire into the right groove. Also note that each pin or lead has a groove to let only one wire reach the lead.
Now carefully insert the wires into the pins and confirm they are in the right order and groove. Double check the connection for each respective wire and pin. Insert the wires all the way inside the connector by pushing it with a little force. Wire colours should be matched in the manner as illustrated in the picture.
After you have aligned and pushed all the wires deep inside the RJ45 connector, it is the time to take a final check. Turn the connector on both sides and look closely to confirm if each wire has reached the extreme top of the connector and the sleeve of the CAT 5 cable has crossed the lock zone (see image). If the wires are not reaching the end and/or if the sleeve does not cross the lock zone, there are chances of bad connections and/or the wires may get damaged respectively. Ensure proper fitting to avoid problems. If you find that wires are too short or long, start the entire process again ;). Do not take any risks because once the connector is crimped to the wire. you cannot undo it. In such case, the connector will be wasted and the wire will get shorter.
Finally after ensuring that all wires are in place inside the connector, it's time for crimping. Insert the connector, by holding the wire in the crimping tool. While doing this, apply a little force on the cable to push the sleeve and the wires as far as it can go into the connector and immediately press the handles to crimp the connector.
Press the tool firmly to ensure a good crimped connector and to avoid loose connections, You should also here a click when you are crimping which indicates that the sleeve as been locked in position inside the connector,
to crimp the other end with a connector, follow the procedure from Step 1 to Step 10 but the only difference will be the order of the cable colour. Here follow the order of the colour as follows;
- White Blue : Blue : White Orange : Orange
The rest of the procedure us the same. Your cable should now be ready for use.
Suggested Crimping Tool
Factory Crimped Cross Cable
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