3Com 3CB9RG4 Quick Start Manual page 23

4-Port Gigabit Ethernet Layer 3 Switching Module (GBIC) Quick Start Guide
GBIC SX Transceivers
The 1000BASE-SX transceiver supports a direct connection to
62.5-micron or 50-micron multimode fiber-optic cable.
Table 7 lists the transmission ranges for each GBIC SX connection.
Table 7 GBIC SX Transmission Ranges
Diameter
Fiber Type (microns)
Multimode 62.5
Multimode 62.5
Multimode 50
Multimode 50
GBIC LX Transceivers
The 1000BASE-LX transceiver supports these connections:
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 8 lists the transmission ranges for each GBIC LX connection.
Table 8 GBIC LX Transmission Ranges
Diameter
Fiber Type (microns)
Multimode 62.5
Multimode 50
Multimode 50
Single-mode 9
Modal Bandwidth Transmission Range
(MHz*km) in meters (feet)
–
160 2
–
200 2
–
400 2
–
500 2
Modal Bandwidth Transmission Range
(MHz*km) in meters (feet)
–
500 2
–
400 2
–
500 2
–
– 2
23
–
220 (6.6 721.8)
–
275 (6.6 902.3)
–
500 (6.6 1640.5)
–
550 (6.6 1804.6)
–
550 (6.6 1804.6)
–
550 (6.6 1804.6)
–
550 (6.6 1804.6)
–
10,000 (6.6 32,810)