Cisco Cisco DWDM Transceiver Modules 安装指南

E F T D r a f t - C o n f i d e n t i a l

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Mode-conditioning Patch Cords

This document describes the installation and use of the mode-conditioning patch cords listed in

Table 1

A mode-conditioning patch cord is shown in

Figure 1

Figure 1

Mode-Conditioning Patch Cord

When using 1000BASE-LX/LH, 10GBASE-LX4 and 10GBASE-LRM transceivers with legacy
62.5-micron or 50-micron MMF, you must install a mode-conditioning patch cord between the
transceiver and the MMF cable on both ends of the link. The patch cord is required as per IEEE standard
and Cisco specification for all links over FDDI-grade, OM1 and OM2 fiber types, and should never be
used for applications over OM3 and more recent fiber types.

Table 1

Mode-Conditioning Patch Cords

Product Number

Description

CAB-GELX-625= IEEE

802.3z-compliant optical fiber assembly consisting of a single-mode fiber

permanently coupled off-center to a 62.5-micron multimode optical fiber with
duplex SC connectors at both ends. The patch cord is 3 meters (9.84 feet) in
length.

CAB-MCP50-SC=

IEEE 802.3z-compliant optical fiber assembly consisting of a single-mode fiber
permanently coupled off-center to a 50-micron multimode optical fiber with
duplex SC connectors at both ends. The patch cord is 1 meter (3.28 feet) in
length.

CAB-MCP-LC=

IEEE 802.3z-compliant optical fiber assembly consisting of a single-mode fiber
permanently coupled off-center to a 62.5-micron multimode optical fiber with
duplex SC connectors at one end and duplex LC connectors at the other end. The
patch cord is 1 meter (3.28 feet) in length.

To equipment

To cable plant

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