Nortel Networks 1000BASE-SX Manuale Utente
Appendix B Installing a Gigabit Interface Converter (GBIC)
187
Using the BayStack 420 10/100/1000 Switch
describes standards, connectors, cabling, and distance for the Model
1000BASE-LX GBIC.
Table 51 Model 1000BASE-LX GBIC specifications
Type
Specifications
Standards
Conformity to the following standards:
802.3z, 1000BASE-LX
Connectors
Duplex SC fiber optic connector
Cabling
62.5 µm MMF optic cable
50 µm MMF optic cable
10 µm SMF optic cable
Distance
1804 ft. (550 m) using 62.5 µm MMF optic cable
1804 ft. (550 m) using 50 µm MMF optic cable
16405 ft. (5 km) using 10 µm SMF optic cable
Wavelength
1300 nm
Optical budget
10.5 dB
Laser Transmitter Characteristics
Minimum launch power
-9.5 dBm
Maximum launch power
-3 dBm
Receiver Characteristics
Minimum receiver sensitivity
-20 dBm
Maximum input power
-3 dBm
Note: When multimode fiber is used in long distance applications,
external, removable, mode-conditioning patch cords may be required to
prevent differential mode delay (DMD). You can order mode
conditioning patch cords through Nortel Networks:
external, removable, mode-conditioning patch cords may be required to
prevent differential mode delay (DMD). You can order mode
conditioning patch cords through Nortel Networks:
•
SC-SC Mode Conditioning Patch Cord 62.5/125—part number
AA0018035
AA0018035
•
SC-SC Mode Conditioning Patch Cord 50/125—part number
AA0018036