Packaging: Category 5e network cables marked CAT5E should be 305 meters (1000 feet) per box. Those marked CAT5 are Category 5 cables. If the packaging is not 305 meters per box, they may not be network cables. Markings on the wires: Regular manufacturers’ product labels have lengths marked on them, making it easy to identify how many meters of wire have been used per box and how many meters of wire are left during engineering.

Use a multimeter to test: National standard network cable 305 meters single core The resistance is about 28 ohms. Some of the fake Category 5e network cables on the market even have a resistance of 50 ohms, which shortens the transmission distance by almost half.

Network cable material: Some low-quality network cables have 2 pairs of copper wires and 2 pairs of copper-clad iron wires among the 4 pairs. It is not a big problem when used in computer networks, but it will cause interference when used in monitoring systems. Use a magnet to attract it. can be identified.

Look with your eyes: The density of the twisted pairs should be close to 1CM.

Category 5e twisted pair cable is an unshielded twisted pair cable. Compared with ordinary Category 5 twisted pair cables, Category 5e twisted pair cables have less attenuation when transmitting signals and have stronger anti-interference capabilities. In a 100M network, the interference level of user equipment is only 1/4 of that of ordinary Category 5 lines.

The Category 5e twisted pair also uses 4 winding pairs and 1 tensile wire. The colors of the wire pairs are exactly the same as the Category 5 twisted pair, which are white-orange, orange, white-green, and green. , white-blue, blue, white-brown and brown. The bare copper wire diameter is 0.51mm (wire gauge is 24AWG), the insulated wire diameter is 0.92mm, and the UTP cable diameter is 5mm.

Category 5e unshielded twisted pair is a cable that has improved some of the performance of existing category 5 shielded twisted pair. Many performance parameters, such as near-end crosstalk and attenuation crosstalk ratio, Return loss, etc. have improved, but its transmission bandwidth is still 100MHz.

Unshielded twisted pair cable is composed of multiple twisted pairs and a plastic sheath. Category 5 refers to the five different quality levels defined for twisted pair cables by the International Electrical Industry Association.