3Com 7754 Installation Manual page 30

30 C 1: S
HAPTER WITCH
8-port 1000BASE-X GBIC
Module
7750 C
OMPONENTS
Table 38 SFP Cables for the
10/100/1000BASE-T Module
SFP module
SFP-GE-LH70-SM1590
-CW
SFP-GE-LH70-SM1610
-CW
SFP-GE-T
The 8-port 1000BASE-X GBIC module provides 8 external GBIC module ports. A
GBIC module is used for each data receiving/transmitting channel. The following
modules are available:
3CGBIC91
■
3CGBIC92
■
3CGBIC97
■
Figure 26 illustrates the 8-port 1000BASE-X GBIC module.
Figure 26 8-Port 1000BASE-X GBIC Module
Every GBIC port has a LED, as shown in Figure 27.
Figure 27 Front Panel of the 8-Port 1000BASE-X GBIC Module
1 2
1 GBIC port
2 GBIC port LED
12-port 1000BASE-X SFP and 4-port
Central
wavelength Connector Matching cable
1590nm LC
1610nm LC
- RJ45
Maximum
transmission
distance
9/125 µm single mode 70km (43 mi)
optical fiber cable
9/125 µm single mode 70km (43 mi)
optical fiber cable
- 100m (328 ft)