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1000BASE-LX GBIC specifications 59
CAUTION
When multimode fiber is used in long-distance applications,
external, removable, mode-conditioning patch cords may be
required to prevent differential mode delay (DMD). Excessive DMD
can cause an increase in the bit error rate (BER). You can order
mode conditioning patch cords through Nortel:
•
SC-SC Mode-Conditioning Patch Cord 62.5/125 (part
number AA0018035)
•
SC-SC Mode-Conditioning Patch Cord 50/125 (part
number AA0018036)
The following table describes standards, connectors, cabling, and distance
for the 1000BASE-LX GBIC.
Table 25
IEEE 802.3z 1000BASE-LX GBIC specifications
Parameter
Specifications
Standards IEEE 802.3z, 1000BASE-LX
Connectors Duplex SC
Cabling
•
62.5 µm MMF
•
50 µm MMF
•
10 µm SMF
Distance
•
up to 550 m using 62.5 µm MMF
•
up to 550 m using 50 µm MMF
•
up to 10 km using 10 µm SMF
Wavelength
1310 nm
Link optical power budget 10.5 deciBels (dB)
Transmitter characteristics
Launch power -9.5 to -3.0 dBm
Receiver characteristics
Receiver sensitivity -20 dBm
Maximum input power -3.0 dBm
Nortel Metro Ethernet Routing Switch 8600
Installation — SFP, XFP, and GBIC Hardware Components
NN46220-301 02.04 Standard
4.2 14 February 2008
Copyright © 2008, Nortel Networks
.