3Com 3C16895, Installation Manual

Page: 22 / 74

22 C
HAPTER
1: S
WITCH
7750 C
OMPONENTS
24-port 100BASE-FX
MMF FE Module
The 24-port 100BASE-FX MMF FE module provides 24 100 Mbps multi-mode
Ethernet optical port service channels.
Figure 14 illustrates the 24-port 100BASE-FX MMF FE module.
Figure 14 24-Port 100BASE-FX MMF FE Module
Each 100 Mbps optical port has a green LED, as shown in Figure 15.
Figure 15 Front Panel of the
24-Port 100BASE-FX MMF FE Module
1 Ethernet port
2 Ethernet port LED
Table 25 describes the status of the 24-port 100BASE-FX MMF FE module LEDs.
The 24-port 100BASE-FX MMF FE module requires a 62.5/125 µm multi-mode
optical fiber cable with an MT-RJ connector and a central wavelength of 1300 nm.
Table 26 describes the specifications of the 24-port 100BASE-FX MMF FE module.
Table 25
24-Port 100BASE-FX MMF FE Module
LEDs
LED Description
LINK/ACT Green — The port is connected.
Off — The port is not connected.
Green flashing — Data is being transmitted or received.
Table 26 Specifications for the 24-Port 100BASE-FX MMF FE Module
Specification Description
CPU MPC850
BootROM 512 KB
SDRAM 64 MB
Dimensions (L x W) 366.7 x 340 mm (14.5 x 13.4 in)
Maximum power
consumption 55 W
1 2