Patch Cord Configuration Example; Patch Cord Installation - Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual

Appendix B Connector and Cable Specifications
We do not recommend using the LX/LH GBIC and MMF without the patch cord for very short link
Note
distances of 33 to 328 feet (10 to 100 meters). The result could be an elevated bit error rate (BER).
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/LH GBIC complies with the IEEE 802.3z standard for
1000BASE-LX.

Patch Cord Configuration Example

Figure B-9
Figure B-9
1000BASE-LX/LH

Patch Cord Installation

Because invisible laser radiation may be emitted from the aperture of the port when no cable is
Warning
connected, avoid exposure to laser radiation and do not stare into open apertures.
Plug the end of the patch cord labeled "To Equipment" into the GBIC. (See
labeled "To Cable Plant" into the patch panel. The patch cord is 9.84 feet (3 meters) long and has duplex
SC-type male connectors at each end.
Figure B-10
To equipment
OL-4503-26
shows a typical patch cord configuration.
Patch Cord Configuration
Patch
cord
Rx
Patch
port
panel
Tx
Link span greater than 984 ft
Patch Cord Installation
Building Patch
cable plant cord
Patch
panel
(300 m)
To cable plant
Cisco 7600 Series Router Installation Guide
Cable Specifications
Tx
1000BASE-LX/LH
port
Rx
Figure B-10.) Plug the end
B-11