Cisco WS-C6503 Manual page 87

Chapter 3 Installing Supervisor Engines
Table 3-2
Mode-Conditioning Patch Cord
CAB-MCP50-SC=
CAB-MCP-LC=
Table 3-3
Table 3-3
Transceiver
GBIC LX/LH
(WS-G5486=)
SFP LX/LH
(GLC-LH-SM=)
XENPAK LX4
(XENPAK-10GB-LX4=)
OL-7397-03
Mode-Conditioning Patch Cords (continued)
Description
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.
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.
lists the optical transceivers that require a mode-conditioning patch cord.
Optical Transceivers Using a Mode-Conditioning Patch Cord
Mode-Conditioning Patch Cord Usage
When using an LX/LH GBIC with 62.5-micron diameter MMF, you
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.
When using the LX/LH SFP transceiver with 62.5-micron diameter
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.
The Cisco XENPAK-10GB-LX4 transceiver supports link lengths of
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).
Attaching the Network Interface Cables
Catalyst 6500 Series Supervisor Engine Guide
3-19