Chapter 3 Installing Supervisor Engines

Attaching the Network Interface Cables

Table 3-2

Mode-Conditioning Patch Cords (continued)

 

 

Mode-Conditioning Patch Cord

Description

 

 

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 male

 

 

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 male

 

 

connectors at one end and duplex LC male connectors at

 

 

the other end. The patch cord is 1 meter (3.28 feet) in

 

 

length.

 

 

 

Table 3-3lists the optical transceivers that require a mode-conditioning patch cord.

Table 3-3 Optical Transceivers Using a Mode-Conditioning Patch Cord

Transceiver

Mode-Conditioning Patch Cord Usage

 

 

GBIC LX/LH

When using an LX/LH GBIC with 62.5-micron diameter MMF, you

(WS-G5486=)

must install a mode-conditioning patch cord (CAB-GELX-625 or

equivalent) between the GBIC and the MMF cable on both the transmit

 

 

and receive ends of the link. The mode-conditioning patch cord is

 

required for:

 

Link distances less than 328 feet (100 m), where the

 

mode-conditioning patch cord prevents overdriving the receiver.

 

Link distances greater than 984 feet (300 m), where it reduces

 

differential mode delay.

 

 

SFP LX/LH

When using the LX/LH SFP transceiver with 62.5-micron diameter

(GLC-LH-SM=)

MMF, you must also install a mode-conditioning patch cord

(CAB-GELX-625 or equivalent) between the SFP transceiver and the

 

 

MMF cable on both the sending and receiving ends of the link. The

 

mode-conditioning patch cord is required for:

 

Link distances less than 328 feet (100 m), where it prevents

 

overdriving the receiver.

 

Link distances greater than 984 feet (300 m), where it reduces

 

differential mode delay.

 

 

XENPAK LX4

The Cisco XENPAK-10GB-LX4 transceiver supports link lengths of

(XENPAK-10GB-LX4=)

984 feet (300 meters) on standard FDDI grade MMF. To ensure that

specifications are met, the transmitter output should be coupled through

 

 

a mode conditioning patch cord. Cisco offers two mode conditioning

 

patch cords: CAB-GELX-625= (mode conditioning patch cable

 

62.5 microns, dual SC connectors) and CAB-MCP50-SC= (mode

 

conditioning patch cable 50 microns, dual SC connectors).

 

 

Catalyst 6500 Series Supervisor Engine Guide

 

OL-7397-03

3-19

 

 

 

Page 87
Image 87
Cisco Systems DSN09EVS720ACK9 manual Transceiver Mode-Conditioning Patch Cord Usage

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