3Com 3CR17561-91-US Getting Started Guide - Page 37

Choosing the Correct Cables for the 1000BASE-X SFP Ports, Fiber Type, Diameter, microns, Modal - categories

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The Power-up Sequence 37 Choosing the Correct Cables for the 1000BASE-X SFP Ports The 1000BASE-SX SFP transceiver supports a direct connection to a multi-mode fiber-optic cable. The 1000BASE-LX SFP transceiver supports a direct connection to single-mode and multi-mode fiber-optic cables. The 1000BASE-LH70 SFP transceiver supports a direct connection to a single-mode fiber-optic cable and the 1000BASE-T SFP transceiver uses Category 5 copper cabling with RJ-45 connectors and supports segment lengths of up to 100 m (328 ft). Table 14 shows the range for each connection: Table 14 1000BASE-X SFP Port Cable Range Fiber Type 1000BASE-SX Multi-mode Multi-mode Multi-mode Multi-mode 1000BASE-LX Multi-mode Multi-mode Multi-mode Single-mode 1000BASE-LH70 Single-mode Diameter Modal Transmission Range in meters (microns) Bandwidth (in feet) (MHz . km) 62.5 160 2m - 220m (6.6 ft - 721.8 ft) 62.5 200 2m - 275m (6.6 ft - 902.3 ft) 50 400 2m - 500m (6.6 ft - 1640.5 ft) 50 500 2m - 550m (6.6 ft - 1804.6 ft) 62.5 500 2m - 550m (6.6 ft - 1804.6 ft) 50 400 2m - 550m (6.6 ft - 1804.6 ft) 50 500 2m - 550m (6.6 ft - 1804.6 ft) 9 - 2m - 10,000m (6.6 ft - 32, 810 ft) 9 core - 2m - 70 km (6.6 ft - 43 miles)

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The Power-up Sequence
37
Choosing the Correct
Cables for the
1000BASE-X SFP Ports
The 1000BASE-SX SFP transceiver supports a direct connection to a
multi-mode fiber-optic cable. The 1000BASE-LX SFP transceiver supports
a direct connection to single-mode and multi-mode fiber-optic cables.
The 1000BASE-LH70 SFP transceiver supports a direct connection to a
single-mode fiber-optic cable and the 1000BASE-T SFP transceiver uses
Category 5 copper cabling with RJ-45 connectors and supports segment
lengths of up to 100 m (328 ft). Table 14 shows the range for each
connection:
Table 14
1000BASE-X SFP Port Cable Range
Fiber Type
Diameter
(microns)
Modal
Bandwidth
(MHz . km)
Transmission Range in meters
(in feet)
1000BASE-SX
Multi-mode
62.5
160
2m - 220m (6.6 ft - 721.8 ft)
Multi-mode
62.5
200
2m - 275m (6.6 ft - 902.3 ft)
Multi-mode
50
400
2m - 500m (6.6 ft - 1640.5 ft)
Multi-mode
50
500
2m - 550m (6.6 ft - 1804.6 ft)
1000BASE-LX
Multi-mode
62.5
500
2m - 550m (6.6 ft - 1804.6 ft)
Multi-mode
50
400
2m - 550m (6.6 ft - 1804.6 ft)
Multi-mode
50
500
2m - 550m (6.6 ft - 1804.6 ft)
Single-mode
9
-
2m - 10,000m (6.6 ft - 32, 810 ft)
1000BASE-LH70
Single-mode
9 core
-
2m - 70 km (6.6 ft - 43 miles)