Network and Internet
How to Wire an RJ45 Connector
RJ45 cable connection is made with the placement and termination of eight vessels in Ethernet cable to the appropriate connector. The connection called RJ45 in everyday use usually refers to 8P8C connector. The RJ45 cable connection is also important in the question how to test the color sequence up to cable and connector compliance.
T568A and T568B color ranking
Based on the direction diagram of connector manufacturer for pin 1–8 numbers; Look at the opposite side can cause reverse reading. T568B sequence: white-orange, orange, white-green, blue, white-blue, green, white-brown, brown. T568A sequence: white-green, green, white-orange, blue, white-blue, orange, white-brown, brown.
The same scheme is used in two ends on the standard flat connection. What scheme is applied in the existing installation should be checked. A/B color signs of the manufacturer are followed, instead of numbering of connectors on wall outlet and patch panel.
RJ45 termination steps
- Select clamping tool with connector suitable for cable category, vessel type and thickness.
- Open the outer sheath until it is necessary to damage the veins.
- Index of the diagrams selected by the veins while retaining the twist of couples as much as possible.
- Prepare the veins in equal size and check that all enters the right channel.
- Make sure the case connector stays in the holder section.
- Tighten the manufacturer's way described; test two ends visually and electrically.
Why can the connection work?
It can lead to the contact problem of a vein connector, improper color sequence or non-cable connector. The mismatch of the couples may disrupt data transmission even if they appear continuity. Sharp twists and damaged cable should also be evaluated.
Connection errors in PoE used lines can affect both data and energy transmission. Take the link before starting to finish the line connected to the active equipment. The appropriate socket and panel termination in the permanent building installation often offers a more regular solution than producing random patch cable on the field.
How to evaluate the test result?
Simple cable tester controls pin matches. More comprehensive line measurement is used to evaluate performance problems and category suitability. Opening of the network connection does not mean that the line meets all requirements.
End tag in corporate application, connection diagram and measurement result should be recorded. A defective line is re-tested again when it is restarted. Thus, it is achieved not only working on that day, but a connection that can be traced during maintenance.
Frequently Asked Questions
Should I use T568A or T568B?
Monitor the specified standard and existing installation in the project. In the flat cable, it is necessary to terminate two ends with the same scheme.
Is the test superfluous if the color sequence is correct?
No. No visual control contact problem, damage or all performance conditions. After finishing, the test should be done.
Does each RJ45 plug fit to every cable?
No. Cable category is important in the selection of single wire or multi-wire structure and vein diameter connector.
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Resources & Advanced Reading
Product specifications and license conditions may vary; Check the relevant official documents before application.