CXtec NEW COMPATIBLE GIG SX MMF MINI GBIC WITH LC CONNECTORS AND LIFETIME WARRANTY Guia De Especificaciones

40 Chapter 2 Installing GBICs

318034-D Rev 00

The Model 1000BASE-T GBIC provides Gigabit Ethernet connectivity using a 
single eight-pin RJ-45 connector. The 1000BASE-T Model GBIC operates at 
1000 Mb/s (1 Gb/s) and does not support 100BASE-T and 10BASE-T interfaces. 

The maximum power requirements of the GBIC is 375 mA at 5V.

Cabling

Single-mode fiber optic cable

Distance

Up to 70 km using single-mode fiber optic cable, depending 
on the quality of the fiber

Optical Budget

22 dB

Wavelength

1550 ± 10 nm

Maximum spectral width

0.2 nm

Maximum launch power

5 dBm or 3.0 mW

Minimum launch power 

0 dBm

Distance

70 km

Wavelength

1200 nm to 1620 nm

Minimum receiver sensitivity -22 dBm

Maximum input power

-3 dBm

Note: When shorter lengths of single-mode fiber cable are used, there is 
a risk of overloading the receiver. It may be necessary to insert an in-line 
optical attenuator in the link to prevent overloading, as follows:

• Insert a 10 dB in-line optical attenuator between the fiber optic cable plant 

and the receiving port on the 1000BASE-ZX GBIC, at each end of the link, 
if the fiber optic cable span is less than 25 km.

• Insert a 5 dB in-line optical attenuator between the fiber optic cable plant 

and the receiving port on the 1000BASE-ZX GBIC, at each end of the link, 
if the fiber optic cable span is less than 50 km.

Table 17   1000BASE-ZX GBIC specifications (continued)