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188 Appendix B Installing a Gigabit Interface Converter (GBIC)
209418-A
1000BASE-XD
The Model 1000BASE-XD GBIC provides Gigabit Ethernet connectivity using
SC duplex single-mode fiber connectors. High-performance optical transceivers
enable Gigabit Ethernet link distances up to 50 kilometers (km) over single-mode
fiber. The ports operate in full-duplex mode only.
Table 52 describes standards, connectors, cabling, and distance for the Model
1000BASE-XD GBIC.
Table 52 Model 1000ASE-XD GBIC specifications
Type Specifications
Standards Conformity to the following standards:
802.3z, Ethernet full duplex
Connectors SC duplex single-mode fiber optic connector
Cabling Single-mode fiber optic cable
Distance Up to 50 km using single-mode fiber cable,
depending on the quality of the fiber
Optical budget 17 dB
Laser Transmitter Characteristics
Wavelength 1550 ± 10 nm
Maximum spectral width 0.2 nm
Maximum launch power 0 dBm or 1.0 mW
Minimum launch power into fiber -5 dBm or 0.3 mW
Distance 50 km
Receiver Characteristics
Wavelength 1200 to 1550 nm
Minimum receiver sensitivity -22 dBm
Maximum input power -3 dBm
Note: Nortel Networks recommends that you use an in-line attenuator for
shorter link distances to avoid overloading the receiver.
Note: The Model 1000BASE-XD GBIC is based on proprietary
signaling and is compatible with Accelar 1000 Series XD modules.