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1000BASE-LX Connectors
311523-C Rev 00
15
1000BASE-LX Connectors
The 1000BASE-LX (gigabit) MDAs use a longwave 1300 nm, fiber optic
transceiver to connect devices over single-mode (5 km/3.1 mi) or multimode
(550 m/1,805 ft) fiber optic cables.
The optical performance of this transceiver cannot be guaranteed when connected
to a multimode fiber plant without the use of the special offset SMF/MMF (mode
conditioning) patch cord.
The 1000BASE-LX MDA transceiver is designed to mechanically accommodate
the
single-mode ferrules
used on one end of the special offset SMF/MMF patch
cord.
Multimode ferrules
can bind and cause damage to the transceiver.
For more information about gigabit transmission over fiber optic cable and mode
conditioning, refer to:
Reference Note: Gigabit Ethernet Physical Layer Considerations
(Part number 201540-B).
The publication is available on the World Wide Web at
support.baynetworks.com/
library/tpubs/.
At the Web site, click on Accelar under the Routing Switches
heading.
Note:
The transceiver must be mode conditioned externally via a special offset
SMF/MMF patch cord for 1000BASE-LX multimode applications. The offset
SMF/MMF patch cord allows the same transceiver to be used for both
multimode and single-mode fiber. See your Nortel Networks sales
representative for more information about the SMF/MMF patch cord.
Caution:
Do not connect multimode cables directly into the 1000BASE-LX
MDA transceiver. Connect a special offset SMF/MMF patch cord into the
transceiver, then connect the multimode cable into the SMF/MMF patch cord.