Nortel Networks 312865-A manual Optical budget 17 dB

Table 5 1000BASE-XD GBIC specifications (continued)

Type	Specifications
Connectors	Duplex SC 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	-5 dBm or 0.3 mW
fiber
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.

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