1033. Untwist the pairs so that they can lie flat, and arrange the colored wires based on the wiringspecifications.4. Cut the top of the wires even with one another. Insert the wires into the RJ-45 end and make surethe wires extend to the front of the RJ-45 end and make good contact with the metal contacts in theRJ-45 end and in the correct order.5. Crimp the RJ-45 connector with the crimping pliers until you hear a click.6. Repeat the above steps with the other end of the cable.7. Use a cable tester to verify the correct connectivity of the cable.Optical fiberOptical fibers are widely used in fiber-optic communications, which are advantageous for long-distancecommunications.Optical fibers can be classified into the following types:• Single mode fiber—It has a core size of 10 μm or smaller, and has a lower modal dispersion. Itcarries only a single ray of light. It is mostly used for communication over longer distances.• Multi-mode fiber—It has a core size of 50 μm or 62.5 μm or higher, and has a higher modaldispersion than single-mode optical fiber. It is mostly used for communication over shorterdistances.Table 35 Allowed maximum tensile force and crush loadPeriod of force Tensile load (N) Crush load (N/mm)Short period 150 500Long term 80 100Fiber connectors are indispensable passive components in an optical fiber communication system. Theyallow the removable connection between optical channels, which makes the optical system debuggingand maintenance more convenient and the transit dispatching of the system more flexible. The F5000-A5supports only the LC connector.Figure 77 LC connector
