Allied Telesis AT-MC103LH Recommended Cables and Cable Specifications, 100Base-FX 100Base-TX

Recommended Cables and Cable Specifications

Table 3 lists the IEEE 802.3u cabling specifications for the media converters. Refer to Table 3 for cabling recommendations.

Table 3 IEEE 802.3u Cabling Specifications for Media Converters

	100Base-FX	100Base-TX
Media	1300 nm multimode fiber, 50/125 micron	Unshielded/
	1300 nm multimode fiber, 62.5/125 micron	ShieldedTwisted
	1300 nm single-mode fiber, 9/125 micron	Pair Category 5 only
	(see Note 1)
Topology	Star, Tree	Star, Tree
External	Network Adapter Card, Repeater, Switch, Router, or	Network Adapter
Devices	Bridge	Card, Repeater,
		Switch, or Router
Maximum	100BaseFX Full-Duplex operation:	328 ft (100 m)
Segment	Multimode fiber (MMF), 2 km (1.2 mi)
Length	Single mode fiber (SMF), 15 km (9.32 mi) (XL
	model only, see Note 3.)
	Single mode fiber (SMF), 40km (24.9 mi) (LH model
	only, see Note 4.)
	100BaseFX Half-Duplex operation:
	The total distance of all fiber runs cannot exceed
	the following limits: (see Note 2)
	with one Media Converter inline:
	Switch to Switch = 372 m (1221 ft)
	Work Station 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)
	Work Station to Switch = 332 m (1089 ft)
	Switch to Class II Repeater =145 m (476 ft)
	Switch to Class I Repeater = 97 m (318 ft)

Note 1. Single-mode fiber transmitter is rated as a Class 1 laser.

Note 2. Each Media Converter used inline within a single collision domain will reduce the overall segment length by 40 m (131.24 ft) of fiber.

Note 3. Applies only to the AT-MC103XL, Single Mode Fiber OpticTransmitter/Receiver. Note 4. Applies only to the AT-MC103LH, Single Mode Fiber Optic Transmitter/Receiver.

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