3Com 1000BASE-T-GBIC manual 1000BASE-LXGBIC Transceivers

2GBIC Transceiver Installation Guide

1000BASE-SX GBIC The 1000BASE-SX GBIC transceiver supports a direct connection to Transceivers 62.5-micron or 50-micron multimode fiber-optic cable.

Table 1 shows the transmission ranges for each connection.

Table 1 1000BASE-SX GBIC Multimode Transmission Ranges

Fiber Type	Diameter	Modal Bandwidth	Transmission Range
	(microns)	(MHz*km)	in meters (feet)
Multimode	62.5	160	2	– 220	(6.6	– 721.8)
Multimode	62.5	200	2	– 275	(6.6	– 902.3)
Multimode	50	400	2	– 500	(6.6	– 1640.5)
Multimode	50	500	2	– 550	(6.6	– 1804.6)

1000BASE-LX GBIC Transceivers

The 1000BASE-LX GBIC transceiver supports these connections:

■A direct connection to single-mode fiber-optic cable

■Connection to multimode fiber through a conditioned launch cable

To ensure optimal performance, compatibility, and regulatory compliance, use only conditioned launch cables that 3Com supports. For a list of currently supported conditioned launch cables, see this 3Com Web site:

http://www.3Com.com/gigabit_ethernet/gbics

Table 2 shows the transmission ranges for each connection.

Table 2 1000BASE-LX GBIC Multimode and Single-Mode Transmission Ranges

Fiber Type	Diameter	Modal Bandwidth	Transmission Range
	(microns)	(MHz*km)	in meters (feet)
Multimode	62.5	500	2	– 550 (6.6 – 1804.6)
Multimode	50	400	2	– 550 (6.6 – 1804.6)
Multimode	50	500	2	– 550 (6.6 – 1804.6)
Single-Mode	9	–	2	– 10,000 (6.6 – 32,810)

1000BASE-T-GBICThe 1000BASE-T GBIC transceiver supports connections over Category 5 Transceivers cabling up to 300 meters (1000 ft.).