Nortel Networks 1000BASE-SX - Manual (Page 69)

1000BASE-EX CWDM GBIC specifications 69
CAUTION
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.
The following table describes standards, connectors, cabling, and distance
for the 1000BASE-ZX GBIC.
Table 34
IEEE 802.3z 1000BASE-ZX GBIC specifications
Parameter Specifications
Connectors SC duplex
Cabling SMF
Distance Up to 70 km
Link optical power budget 22 dB
Transmitter characteristics
Wavelength 1550 ± 10 nm
Maximum spectral width 0.2 nm
Launch power 0 to 5.0 dBm
Receiver characteristics
Wavelength 1200 nm to 1620 nm
Receiver sensitivity -22 dBm
Maximum input power -3.0 dBm
1000BASE-EX CWDM GBIC specifications
This section provides technical specifications for the coarse wavelength
division multiplexing (CWDM) 1000BASE-EX GBIC models. The part
numbers of these GBICs range from AA1419017-E5 to AA1419024-E5.
Nortel Metro Ethernet Routing Switch 8600
Installation — SFP, XFP, GBIC, and OADM Hardware Components
NN46220-301 01.01 Standard
5.0 1 May 2008
Copyright © 2008, Nortel Networks
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