We recommend that you use the LX and LH GBIC and MMF with the patch cord for short link distances
of 33 to 328 feet (10 to 100 meters) because not using the patch could result in an elevated bit error rate
(BER).
Note
The patch cord is required to comply with IEEE standards. IEEE found that link distances could not be met
with certain types of fiber-optic cable due to a problem in the center of some fiber-optic cable cores. The
solution is to launch light from the laser at a precise offset from the center by using the patch cord. At the
output of the patch cord, the LX and LH GBIC complies with the IEEE 802.3z standard for 1000BASE-LX.
Installing the Patch Cord
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams
or view directly with optical instruments. Statement 1051
Warning
To install the patch cord, perform these steps:
SUMMARY STEPS
1.
Plug the end of the patch cord labeled To Equipment into the GBIC. See Figure 13: Patch Cord Installation,
on page 33.
2.
Plug the end labeled To Cable Plant into the patch panel. See Figure 13: Patch Cord Installation, on page
33.
DETAILED STEPS
Step 1
Plug the end of the patch cord labeled To Equipment into the GBIC. See Figure 13: Patch Cord Installation, on page
33.
Step 2
Plug the end labeled To Cable Plant into the patch panel. See Figure 13: Patch Cord Installation, on page 33.
The patch cord is 9.8-feet (3-meters) long and has duplex SC male connectors at each end.
Figure 13: Patch Cord Installation
Catalyst 6800 Ethernet Module Installation Guide
33
Installing and Removing Modules, Transceivers, and Attaching Cables
Mode-Conditioning Patch Cord
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