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Longwave Gigabit MDAs
The following 1000BASE-LX MDAs conform to the IEEE
802.3z 1000BASE-LX standard and use longwave 1300 nm fiber
optic connectors to connect devices over single mode (5 km/3.1
mi) or multimode (550 m/1805 ft) fiber optic cable.
• 450-1LR MDA -- single MAC MDA with a separate
redundant Phy (backup Phy port). Only one Phy port can be
active at any time. If the active Phy port fails, the redundant
Phy port automatically becomes the active port.
• 450-1LX MDA -- single Phy MDA.
Figure 8 shows the 450-1LR MDA and the 450-1LX MDA front
panels.
Note: 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. For more
information, see “1000BASE-LX Multimode
Applications” on page 30.