Allied Telesis AT-A17 Guía de instalación descargar pdf (Pagina 23)

AT-MCF106xx and AT-MCF112xx Installation Guide

❑ Use a straight-through cable to connect a hub or switch to a twisted

pair port on the unit. Use a crossover cable to connect a workstation to

a twisted pair port on the unit.

❑ Refer to Table 5 for the fiber optic cabling specifications.

Table 5 Fiber Optic Cabling Specifications

Specifications

Media 50/125 micron multimode fiber (MMF)

62.5/125 micron multimode fiber (MMF)

9/125 micron single-mode fiber

(SMF)

The single-mode fiber optic transmitter is rated as a Class 1 laser.

Maximum Segment

Length - Full-

duplex

Multi-mode fiber: 2 km (1.24 mi)

Single mode fiber: 15 km (9.3 mi)

Single mode fiber: 40 km (24.8 mi)

This applies to the AT-MCF106SM and AT-MCF112SM models only.

This applies to the AT-MCF106LH and AT-MCF112LH models only.

Maximum Segment

Length - Half-

duplex

The total distance of all fiber runs cannot exceed the following

limits:

With one Media Converter inline:

Switch to Switch = 372 m (1221 ft)

Workstation to Switch = 372 m (1221 ft)

Switch to Class II Repeater = 185 m (607 ft)

Switch to Class I Repeater = 137 m (450 ft)

With two Media Converters inline:

Switch to Switch = 332 m (1089 ft)

Workstation to Switch = 332 m (1089 ft)

Switch to Class II Repeater =145 m (476 ft)

Switch to Class I Repeater = 97 m (318 ft)

Each media converter used inline within a single collision domain will reduce the overall segment length by 40 m

(131.24 ft) of fiber.

External Devices Network Adapter Card, Repeater, Switch, or Router

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Allied Telesis AT-A17 Guía de instalación Pagina 23