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GeniusPro/Lightpalette Operator's Manual - Strand Lighting

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Ethernet Overview<br />

Connector<br />

Maximum<br />

Segment<br />

Length<br />

Minimum<br />

Cable<br />

Length<br />

Between<br />

Nodes<br />

Maximum<br />

Number of<br />

Nodes per<br />

Segment<br />

8-pin RJ-45<br />

100m (330ft)<br />

BNC, isolated<br />

ground<br />

N-Series, male<br />

185m (607ft)<br />

standard. 500m (1640<br />

ft)<br />

D-type 15 pin<br />

female<br />

50m (165ft)<br />

0.6m (2ft) 0.5m (1.5ft) 2.5m (8.2ft) 0 0<br />

2 30 100 2 2<br />

dual ST<br />

10BASE-FL<br />

2.0 km (1.24<br />

miles) FOIRL<br />

1.0 km (0.62<br />

miles)<br />

Twisted Pair Wiring<br />

RJ-45 Pin PDS/258A Wire Color 10BT (UTP)<br />

1 T2 White-Orange stripe Transmit+<br />

2 R2 Orange-White stripe Transmit-<br />

3 T3 White-Green stripe Receive+<br />

4 R1 Blue-White stripe<br />

5 T1 White-Blue stripe<br />

6 R3 Green-White stripe Receive-<br />

7 T4 White-Brown stripe<br />

8 R4 Brown-White stripe<br />

Network Topology<br />

Ethernet network topology, as referred to in networking terms, is simply a map of how a system is or will be laid out.<br />

Depending on the type of equipment in an installation, the topology can be either a linear or star configuration, or a<br />

combination of the two. Each run of cable in a LAN is known as a segment, hence a LAN (Local Area Network) can be<br />

made up of one or more segments.<br />

A linear network topology is one that is made up of directly interconnected segments, a node exists at each segment<br />

intersection. A star network topology is one where each node is connected to a central hub. The hub establishes,<br />

maintains and terminates all connections between the nodes. In a LAN, the hub is may be a workstation or in a larger<br />

multi-port network the hub is most likely to be a multiplexer.<br />

If a segment in an installation is longer than the length allowed by Ethernet rules, a repeater must be used. A repeater<br />

is a device that connects two or more segments and mirrors whatever it sees on one segment to all the other attached<br />

segments. A partitioning repeater can recognize a fault on any of its segments and cease to reflect from that until the<br />

fault is rectified. This prevents wiring problems on one segment interfering with communications on other segments.<br />

This section covers the following topics:<br />

❍<br />

Ethernet 4-3-2 Rule<br />

file:///C|/LIGHTP/HELP.ENG/page43.htm (5 of 9)11/2/2004 3:03:20 AM

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