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2 GBIC Transceiver Installation Guide
1000BASE-SX GBIC
Transceivers
The 1000BASE-SX GBIC transceiver supports a direct connection to
62.5-micron or 50-micron multimode fiber-optic cable.
Table 1 shows the transmission ranges for each connection.
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.
1000BASE-T-GBIC
Transceivers
The 1000BASE-T GBIC transceiver supports connections over Category 5
cabling up to 300 meters (1000 ft.).
Table 1 1000BASE-SX GBIC Multimode Transmission Ranges
Fiber Type
Diameter
(microns)
Modal Bandwidth
(MHz*km)
Transmission Range
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)
Table 2 1000BASE-LX GBIC Multimode and Single-Mode Transmission Ranges
Fiber Type
Diameter
(microns)
Modal Bandwidth
(MHz*km)
Transmission Range
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)