3Com SuperStack 3 4900 Manuel de l'utilisateur
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®
SuperStack
3 Switch 4900 Series 1000BASE-SX Module (3C17710)
User Guide
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NTRODUCTION
The 1000BASE-SX Module (3C17710) provides your
®
SuperStack
3 Switch 4900 series with full duplex, four
wire speed Gigabit Ethernet fiber optic ports. This allows
you to provide connectivity between the Switch and
remote workgroups or to create a high capacity aggre-
gated link backbone connection.
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Fiber Size
62.5 µm
50 µm
DUA1771-0AAA01
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The Module conforms to the full duplex implementation
of the Gigabit Ethernet standard, IEEE 802.3z. The ports
use 62.5 µm or 50 µm multimode fiber optic cable with
MT-RJ duplex connectors, and support the segment
lengths specified in IEEE 802.3z, as shown below:
Fiber Bandwidth
Segment Lengths Supported
at 850 nm
160 MHz/km
2–220 m (7–722 ft)
200 MHz/km
2–275 m (7–902 ft)
400 MHz/km
2–500 m (7–1805 ft)
500 MHz/km
2–550 m (7–1805 ft)