Applies To:
  • CitectSCADA

What is the difference between thin coax and 10BaseT network cabling? 

Thin coax cabling looks like the coaxial cable that is often used to connect a VCR to a TV set. 10BaseT cabling looks like ordinary telephone wire, except that it has between 6 and 8 wires inside of it instead of 4, and they're usually braided together inside to help reduce interferences. Thin coax cabling is often used to create a network "BACKBONE" of computers. PC's are strung together in a long chain -- a cable goes from the first PC to the second; a second cable goes from the second PC to the third; etc. No matter how many computers are connected together, thin coax ALWAYS requires termination at both ends of the network. On each PC's network card, T-connectors are inserted, splitting the network card's input port into two separate ports. One port incoming cable and one outgoing cable. If the PC is the last node on the network, then a terminator is attached to the empty hole of the T-connector. 10BaseT cabling, is great for situations where computers may be moved around. 10BaseT cabling requires a network hub. Each PC connects via 10BaseT from their own network card to the hub. This type of configuration is called a STAR configuration. Hubs, terminators, T-connectors, and both types of cabling can be found at your local computer store. Be sure to measure the distance between your PC's to determine how much cable you'll need. The maximum distance for a thin coax backbone between repeaters is 607 feet and the minimum distance between nodes is 1.5 feet. Also, make sure the cabling is not coiled or curled up. The maximum for a strand of 10BaseT cable is 328 feet. 10BaseT should not be used to connect PC's together by itself, as it can be unreliable or not work at all.