3Com 7754 Installation Manual page 13

4-Port
10/100/1000BASE-T
Submodule
Figure 4 4-Port 1000BASE-X-GBIC Submodule
3C16874
1 2
Ethernet GBIC port
2 Ethernet GBIC port LED
Table 12 describes the 4-port 1000BASE-X-GBIC submodule LEDs.
4-Port 1000BASE-X-GBIC Submodule LEDs
Table 12
LED
LINK/ACT
Table 13 lists the specifications for each of the 4-port 1000BASE-X-GBIC
submodule.
4-Port 1000BASE-X-GBIC Submodule Specifications
Table 13
Optional GBIC Central
Module Wavelength
1000BASE-SX-MM 850 nm
(3CGBIC91)
1000BASE-LX-SM-IR 1310 nm
(3CGBIC92)
1000BASE-LX-SM 1550 nm
(3CGBIC97)
The 4-Port 10/100/1000BASE-T submodule provides four 10/100/1000 Mbps
auto-negotiation service ports.
Figure 5 illustrates the 4-port 10/100/1000BASE-T submodule.
Figure 5 4-Port 10/100/1000BASE-T
3C16873 3C16873
1 2
1 Ethernet port
2 Ethernet port LEDs
Description
Green — The link is operating normally.
Off — The link is not operating.
Green flashing — Data is being transmitted or received.
Connector Interface Fiber
Type Specifications
SC 50/125 µm
multi-mode fiber
62.5/125 µm
Multi-mode fiber
SC 9/125 µm
Single-mode fiber
SC 9/125 µm
Single-mode fiber
Submodule
Fabric 32 Submodules 13
Max.
Transmission
Distance
500 m (1640 ft)
220 m (722 ft)
10 km (6 mi)
40 km (25 mi)
70 km (43.5 mi)