Cisco 7301 Installation And Configuration Manual page 50

Connecting I/O Cables
A mode-conditioning patch cord is an optical fiber cable assembly that consists of a pair of optical fibers
terminated with connector hardware. Specifically, the mode-conditioning patch cord is composed of a
single-mode optical fiber permanently coupled off-center (see Offset in
multimode optical fiber.
Figure 2-14
2
RX
1 Gray color identifier
2 To GE interface
3 Blue color identifier
4 Multimode bar
Figure 2-14
Note
To use a mode-conditioning patch cord, follow these steps:
Attach a patch cord to the SFP GBIC module. (See
Step 1
Attach the network ends of your patch cord to the appropriate 1000BASEX equipment in your building
Step 2
cable plant.
Ensure that you connect the TX and RX ports on one end of the patch cord to the RX and TX ports
(respectively) on the other end. Connect TX to RX and RX to TX.
This completes the procedures for connecting the I/O cables.
Cisco 7301 Installation and Configuration Guide
2-20
Figure 2-14
SFP Mode-Conditioning Patch Cord
1
TX
3
shows one type of mode-conditioning patch cord.
Chapter 2
shows a diagram of the mode-conditioning patch cord assembly.
4
/ /
/ / / /
Offset
5 6 4
5 Single-mode bar
6 Offset
7 Beige color identifier
8 To cable plant
Figure 2-13.)
Rack-Mounting, Tabletop Installation, and Cabling
Figure 2-14) to a graded-index
7
7
8
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