Chapter 15: Appendix

(2)10BASE-T cable

This cable is also called "twisted pair cable" or "twisted couple cable." Two copper wires are twisted around each other as a pair. These pairs are bundled together in sets and covered with external insulating cover. The following types are available.

STP cable with a shield, and UTP cable without a shield.

A cross cable can be directly connected between nodes and straight cable can connect nodes through a hub.

The maximum transfer speed of 10BASE-T cable is 10M bps and the maximum length is 100 m. The connectors at both ends of the cable are 8-pole modular connectors specified in ISO8877.

Use category 5 compatible 10BASE-T cable for an FL-net.

1 2 3 4 5 6 7 8

8 7 6 5 4 3 2 1

10BASE-T

 

Pair 2

1

 

2

 

 

3

Pair 3

Pair 1

4

5

 

 

6

Pair 4

7

8

 

10BASE-T cable for Ethernet use

(3)10BASE-T/optical converter, repeater

This device is used to convert electrical signals on a 10BASE-T cable into optical signals.

A FOIRL (Fiber Optic Inter Repeater Link) is used to connect between repeaters and a 10BASE-FL with terminals. This is used to prevent problems caused by electrical noise and to extend a cable's length.

MLL connector (male)

RJ45 (female)

10BASE-T/optical converter, repeater for Ethernet use

15

15-41