Cable Selection Tips

Method/Step:

1 Packing:

Super 5 Type network cable marked with cat5e words should be 305 meters (1000 feet) per carton, marked with CAT5 is 5 class line, packaging is not 305.1-meter box may not be network cable. Line above the logo: regular manufacturers of the product logo on the label has length, do the project to facilitate the identification of 1-box line used how many meters, how many rice noodles left

2 with multimeter test:

GB Cable 305 meters single core resistance of about 28 ohms, the market on the false Super 5 network cable resistors some even up to 50 ohms, transmission distance shortened by almost 1 and a half.

3. Wire Material:

Some of the inferior network cable 4 pairs of 2 copper wire 2 pairs of iron wire, used in computer network problems are not, used in the monitoring system will have interference, with a magnet to be able to identify.

4, the eyes look: twisted twisted pair of density should be close to 1CM twisted.

5, the Super 5 type twisted pair is the unshielded twisted pair line.

Compared with the common 5-type twisted pair, the Super 5-type twisted pair has a smaller attenuation and stronger anti-interference ability when transmitting the signal. In the 100M network, the interference degree of the user device is only 1/4 of the normal 5-class line.

6, Super Five-type twisted pair is also used 4 around the pair and 1 anti-cable, line pairs of colors and five types of twisted-pair, respectively, are white orange, orange, white green, green, white blue, blue, white brown and brown. The bare copper diameter is 0.51mm (AWG is 24AWG) and the insulated wire diameter is 5mm 0.92mm,utp cable diameter.

7, Super Five type of unshielded twisted pair is in the existing five types of shielded twisted pair of partial performance to improve the cable, many performance parameters, such as near-end crosstalk, attenuation crosstalk, echo loss and so on have improved, but its transmission bandwidth is still 100MHz.

The unshielded twisted pair cable is made up of a pair of twisted pairs and a plastic skin. The five categories refer to the five different quality levels defined by the International Electrical Industry Association for twisted-pair cables.

Precautions: When used for monitoring systems, 6 line of effect than the Super 5 line, but not much, 6 line of expensive, large volume cost-effective, so the majority of twisted-pair video transmitter manufacturers to provide transmission distance and parameters are the use of Super 5 types of unshielded twisted pair of parameters, Super 5 type of unshielded twisted-pair cable price and 5 type of unshielded twisted pair price difference is not much, Super 5 type of unshielded twisted pair, the performance is much better, so the monitoring project recommended use of Super 5 types of network cable.