Catalyst 6500 Series Switch Supervisor Engine Guide
Appendix A --- Pluggable Transceivers

Table Of Contents

Pluggable Transceivers

GBIC Transceivers

SFP Transceivers

10-GB XENPAK Transceivers

10-GB X2 Transceivers

WDM Transceivers

CWDM GBIC Transceivers

DWDM GBIC Transceivers

CWDM SFP Transceivers

DWDM SFP Transceivers

DWDM XENPAK Transceivers

DWDM X2 Transceivers

Mode-Conditioning Patch Cords

Cleaning the Fiber-Optic Connectors


Pluggable Transceivers


This appendix provides descriptions and cabling distance specifications for the pluggable optical and copper transceivers that are supported on the Catalyst 6500 series supervisor engine uplink ports. Table A-1 lists the supervisor engine models and the transceiver type and quantity that they support.

Table A-1 Supervisor Engine Transceiver Support

Supervisor Engine
Number of Ports Supporting Transceivers
Transceiver Type Supported

Supervisor Engine 2
(all models)

2

GBIC

Supervisor Engine 32
(WS-SUP32-GE-3B and WS-S32-GE-PISA only)

8

SFP

Supervisor Engine 32
(WS-SUP32-10GE-3B and WS-S32-10GE-PISA only)

2

XENPAK

Supervisor Engine 720
(WS-SUP720, WS-SUP720-3B, and WS-SUP720-3BXL)

2

SFP

Supervisor Engine 720-10GE
(VS-S720-10G-3C and VS-S720-10G-3CXL)

4

X2 (2 ports)

SFP (2 ports)


The appendix is divided into these topics:

GBIC Transceivers

SFP Transceivers

10-GB XENPAK Transceivers

10-GB X2 Transceivers

WDM Transceivers

Mode-Conditioning Patch Cords

Cleaning the Fiber-Optic Connectors

GBIC Transceivers

1000BASE-T and 1000BASE-X GBIC transceivers are supported on the Supervisor Engine 2 uplink ports. Figure A-1 shows a typical 1000BASE-T (copper) GBIC transceiver equipped with an RJ-45 female connector. Figure A-2 shows a typical 1000BASE-X (optical) GBIC transceiver equipped with an SC duplex female connector.

Figure A-1 1000BASE-T GBIC Transceiver Module (WS-G5483)

Figure A-2 1000BASE-X GBIC Transceiver Modules (WS-G5484, WS-G5486, and WS-G5487)

Table A-2 lists the specifications and cabling distances for the different models of the GBIC transceiver.

Table A-2 GBIC Transceivers Specifications and Cabling Distances 

GBIC
Connector
Wavelength
(nm)
Cable Type
Core Size1 (micron)
Modal Bandwidth
(MHz km)
Cable Distance2

1000BASE-T
(WS-G5483)

RJ-45

 

328 ft (100 m)

1000BASE-SX3
(WS-G5484)

SC duplex

850

MMF

62.5

62.5

50.0

50.0

160

200

400

500

722 ft (220 m)

902 ft (275 m)

1640 ft (500 m)

1804 ft (550 m)

1000BASE-LX/LH
(WS-G5486)

SC duplex

1310

MMF4

SMF (NDSF)5

62.5

50.0

50.0

8.6-9.5

500

400

500

1804 ft (550 m)

1804 ft (550 m)

1804 ft (550 m)

6.2 mi (10 km)

1000BASE-ZX6
(WS-G5487)

SC duplex

1550

SMF (NDSF)

SMF (DSF)7

8.6-9.5

7.8-11

43.5 mi (70 km)8

62.1 mi (100 km)

1 The numbers given for multimode fiber-optic (MMF) cable refer to the core diameter; the numbers for single-mode fiber refer to mode field diameter.

2 Cable distances are based on fiber loss. Additional factors, such as the number of splices and the optical quality of the fiber, can affect cabling distances.

3 Use with MMF only.

4 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) to prevent overdriving the receiver. The mode-conditioning patch cord is also required for link distances greater than 984 feet (300 m) to reduce differential mode delay.

5 Nondispersion-shifted single-mode fiber-optic cable (ITU G.652 compliant).

6 Use with SMF only.

7 Dispersion-shifted single-mode fiber-optic cable (ITU G.653 compliant or G.655 compliant).

8 The minimum link distance for ZX GBICs is 6.2 miles (10 km), with an 8-dB attenuator installed at each end of the link. Without attenuators, the minimum link distance is 24.9 miles (40 km).


Table A-3 lists the fiber loss budgets for the GBIC optical transceivers.

Table A-3 Fiber Loss Budgets for GBIC Optical Transceivers

GBIC
Type
Transmit (dBm)
Receive (dBm)1

WS-G5484

1000BASE-SX

-3 (maximum)

-9.5 (minimum)

0 (maximum)

-17 (minimum)

WS-G5486

1000BASE-LX/LH

-3 (maximum)

-9.5 (minimum)

-3 (maximum)

-19 (minimum)

WS-G5487

1000BASE-ZX

-5 (maximum)

0 (minimum)

-3 (maximum)

-232 (minimum)

1 The maximum receive dBm value indicates the overload threshold of the receiver. The minimum receive dBm value indicates the lowest acceptable signal level coming into the receiver that allows correct signal recognition.

2 The WS-G5487 1000BASE-ZX GBIC provides a minimum optical power budget of 23 dB. To determine the supported link distance, you should measure your cable plant with an optical loss test set to verify that the optical loss of the cable plant (including connectors and splices) is less than or equal to the figure. The optical loss measurement must be performed with a 1550-nanometer light source.


Table A-4 lists the physical and environmental specifications for the GBIC transceivers.

Table A-4 1-GB GBIC Transceiver Physical and Environmental Specifications

Item
Specification

Dimensions (H x W x D)

0.75 x 1.54 x 3.50 in. (19.0 x 39.1 x 88.9 mm)

Operating temperature

Storage temperature

32° to 122°F (0° to 50°C)

-40° to 185°F (-40° to 85°C)

Power consumption

1.5 W maximum1

1 The GBIC transceiver port can support up to 1.5 W maximum. An SX GBIC transceiver would typically consume less power than a ZX GBIC transceiver, but Cisco doesn't offer strict specifications for each type.


SFP Transceivers

1000BASE-T and 1000BASE-X SFP transceivers are supported on the following supervisor engines:

Supervisor Engine 32 (WS-SUP32-GE-3B and WS-S32-GE-PISA only)

Supervisor Engine 720 (all models)

Supervisor Engine 720-10GE

Figure A-3 shows the 1000BASE-T (copper) SFP transceiver equipped with an RJ-45 female connector. Figure A-4 shows a typical 1000BASE-X (optical) SFP transceiver equipped with an LC optical connector. Table A-5 lists the specifications and cabling distances for the different models of SFP transceivers.

Figure A-3 1000BASE-T SFP Transceiver (GLC-T)

1

RJ-45 female connector

3

Bale-clasp handle shown in the open (unlocked) position

2

Bale-clasp handle shown in the closed (locked) position

   

Figure A-4 1000BASE-X SFP Transceivers (GLC-SX-MM, GLC-LH-SM, and GLC-ZX-SM)

Table A-5 SFP Transceiver Cabling Specifications 

SFP Transceiver Module and Product Number
Interface Connector
Nominal Wavelength (nm)
Network Cable Type
Fiber Core Size (micron)1
Modal Bandwidth (MHz/km)
Cable Distance2

1000BASE-T
(GLC-T=)

RJ-45

Category 5, 5e, or 6 UTP/FTP

328 ft (100 m)

1000BASE-SX
(GLC-SX-MM=)3

LC duplex

850

MMF

62.5

62.5

50.0

50.0

160

200

400

500

722 ft (220 m)

902 ft (275 m)

1640 ft (500 m)

1804 ft (550 m)

1000BASE-LX/LH
(GLC-LH-SM=)

LC duplex

1300

MMF4

SMF (NDSF)5

62.5

50.0

50.0

8.6-9.5

500

400

500

1804 ft (550 m)

1804 ft (550 m)

1804 ft (550 m)

6.21 mi (10 km)

1000BASE-ZX
(GLC-ZX-SM=)

LC duplex

1550

SMF (NDSF)

SMF (DSF)6

8.6-9.5

7.8-11

43.4 (70 km)

62 mi (100 km)7

1000BASE-BX-D
(GLC-BX-D=)

LC single

1310

SMF (NDSF)

8.6-9.5

6.21 mi (10 km)

1000BASE-BX-U
(GLC-BX-U=)

LC single

1490

SMF (NDSF)

8.6-9.5

6.21 mi (10 km)

1 The numbers given for multimode fiber-optic (MMF) cable refer to the core diameter; the numbers for single-mode fiber refer to mode field diameter.

2 Cable distances are based on fiber loss. Additional factors, such as the number of splices and the optical quality of the fiber, can affect cabling distances.

3 Use with MMF only.

4 A mode-conditioning patch cord is required. When using an LX/LH SFP with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord (CAB-MCP-LC 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) to prevent overdriving the receiver. The mode-conditioning patch cord is also required for link distances greater than 984 feet (300 m) to reduce differential mode delay.

5 Nondispersion-shifted single-mode fiber-optic cable (ITU G.652 compliant).

6 Dispersion-shifted single-mode fiber-optic cable (ITU G.653 compliant or G.655 compliant).

7 1000BASE-ZX SFP modules can reach up to 62 miles (100 km) by using DSMF or low-attenuation SMF; the actual distance depends on the fiber quality, the number of splices, and the connectors.


Table A-6 lists the fiber loss budgets for the 1-GB SFP transceivers.

Table A-6 Fiber Loss Budgets for the 1-GB SFP Transceivers 

1-GB SFP Transceiver Product Number
Transmit (dBm)
Receive (dBm)1

GLC-SX-MM

(1000BASE-SX)

-4 (maximum)

-9.5 (minimum)

0 (maximum)

-17 (minimum)

GLC-LH-SM

(1000BASE-LX/LH)

-3 (maximum)

-9.5 (minimum)

-3 (maximum)

-20 (minimum)

GLC-ZX-SM

(1000BASE-ZX)

5 (maximum)

0 (minimum)

-3 (maximum)

-23 (minimum)

GLC-BX-U

-3 (maximum)

-9 (minimum)

-3 (maximum)

-19.5 (minimum)

GLC-BX-D

-3 (maximum)

-9 (minimum)

-3 (maximum)

-19.5 (minimum)

1 The maximum receive dBm value indicates the overload threshold of the receiver. The minimum receive dBm value indicates the lowest acceptable signal level coming into the receiver that allows correct signal recognition.


Table A-7 list the physical and environmental specifications for the SFP transceivers.

Table A-7 1-GB SFP Transceiver Physical and Environmental Specifications

Item
Specification

Dimensions (H x W x D)

0.04 x 0.53 x 2.22 in. (8.5 x 13.4 x 56.5 mm)

Operating temperature

Storage temperature

32° to 122°F (0° to 50°C)

-40° to 185°F (-40° to 85°C)

Power consumption

1 W maximum1

1 The SFP transceiver port can support up to 1 W maximum. An SX SFP transceiver would typically consume less power than a ZX SFP transceiver, but Cisco doesn't offer strict specifications for each type.



Note You can use any combination of SFP modules that your Cisco device supports. The only restrictions are that each SFP port must match the wavelength specifications on the other end of the cable and that the cable must not exceed the stipulated cable length for reliable communications.


10-GB XENPAK Transceivers

The 10-GB XENPAK transceivers are supported on the Supervisor Engine 32 (WS-SUP32-10GE-3B and WS-S32-10GE-PISA only) uplink ports. Figure A-5 shows a typical XENPAK optical transceiver.

Figure A-5 10-Gigabit XENPACK Optical Transceiver

1

Captive installation screw

3

Optical bore dust plug

2

Transmit optical bore

4

Receive optical bore


Table A-8 lists the specifications and cabling distances for the different types of XENPAK transceivers.

Table A-8 10-GB XENPAK Transceiver Specifications and Cabling Distances 

XENPAK
Connector
Nominal Wavelength
Network Fiber Type
Fiber Core Size (microns)1
Modal Bandwidth (Mhz/km)
Maximum Cable
Distance2

XENPAK-10GB-CX4

InfiniBand 4X

N/A

CX4 (copper)

49 ft (15 m)3

XENPAK-10GB-LX4

SC duplex

1310 nm

MMF

62.5

50.0

50.0

500

400

500

984.3 ft (300 m)4

787.4 ft (240 m)

984.3 ft (300 m)

XENPAK-10GB-LRM

SC duplex

1310 nm

MMF

62.5

50.0

50.0

500

400

500

721.8 ft (220 m)5

328 ft (100 m)

721.8 ft (220 m)

XENPAK-10GB-SR

SC duplex

850 nm

MMF

62.5

62.5

50.0

50.0

50.0

160

200

400

500

2000

83.3 ft (25 m)

108.3 ft (33 m)

216.5 ft (66 m)

269.0 ft (82 m)

984.3 ft (300 m)

XENPAK-10GB-LR/LR+

SC duplex

1310 nm

SMF (NDSF)6

8.6-9.5

6.2 mi (10 km)

XENPAK-10GB-ER/ER+7

SC duplex

1550 nm

SMF (NDSF)

8.6-9.5

24.9 mi (40 km)8

XENPAK-10GB-ZR

SC duplex

1550 nm

SMF

Operates on any SMF type

49.7 mi (80 km)

XENPAK-10GB-LW9

SC duplex

1310 m

SMF (NDSF)

8.6-9.5

6.2 mi (10 km)

1 The numbers given for multimode fiber-optic (MMF) cable refer to the core diameter; the numbers for single-mode fiber refer to mode field diameter.

2 Cable distances are based on fiber loss. Additional factors, such as the number of splices and the optical quality of the fiber, can affect cabling distances. Minimum cabling distance for all types is 2 m according to the IEEE 802.3ae standard.

3 The Cisco XENPAK-10GB-CX4 transceiver supports link lengths of up to 49.2 feet (15 m) on CX4 cable. Cisco offers four CX4 cables: CAB-INF-28G-1= (1 meter cable), CAB-INF-28G-5= (5 meter cable), CAB-INF-28G-10= (10  meter cable), and CAB-INF-28G-15= (15 meter cable).

4 The Cisco XENPAK-10GB-LX4 transceiver supports link lengths of 300 meters on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met, the transmitter output from the LX4 transceiver should be coupled through a mode conditioning patch cord. Cisco offers two mode conditioning patch cords: CAB-GELX-625= for 62.5 micron MMF (dual SC connectors) and CAB-MCP50-SC= for 50 micron MMF (dual SC connectors).

5 The Cisco XENPAK-10GB-LRM transceiver supports link lengths of 220 meters on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met over FDDI-grade, OM1 and OM2 fibers, the LRM transceiver transmitter should be coupled through a mode conditioning patch cord. Cisco offers two mode conditioning patch cords: CAB-GELX-625= for 62.5 micron MMF (dual SC connectors) and CAB-MCP50-SC= for 50 micron MMF (dual SC connectors). No mode conditioning patch cord is required for applications using OM3 fiber.

6 Nondispersion-shifted single-mode fiber-optic cable (ITU G.652 compliant).

7 Requires a 5 db 1550 nm fixed loss attenuator for cable distances less than 12.43 miles (20 km). The attenuator (WS-X6K-5DB-ATT=) is available from Cisco Systems

8 Links that are longer than 18.9 miles (30 km) are considered engineered links.

9 The XENPAK-10GB-LW (WAN PHY) is intended to allow the transport of 10-Gigabit Ethernet over traditional SONET/SDH infrastructure. The purpose of WAN-PHY is to make 10-Gigabit Ethernet compatible with SONET STS-192c format and data rate, as defined by ANSI, as well as the SDH VC-4-64c container specified by ITU.


Table A-9 lists the fiber loss budgets for the 10-GB XENPAK transceivers.

Table A-9 Fiber Loss Budgets for the 10-GB XENPAK Transceivers 

10-GB XENPAK Transceiver Product Number
Transmit (dBm)
Receive (dBm)1

XENPAK-10GB-LX4

-0.5 per lane (maximum)

-6.75 per lane (minimum)

-0.5 per lane (maximum)

-14.4 per lane (minimum)

XENPAK-10GB-LRM

0.5 (maximum)

-6.5 (minimum)

0.5 (maximum)

-8.4 (average minimum)2

-6.4 (OMA minimum)

XENPAK-10GB-SR

-1.2 (maximum)

-7.3 (minimum)

-1 (maximum)

-9.9 (minimum)

XENPAK-10GB-LR/LR+

0.5 (maximum)

-8.2 (minimum)

0.5 (maximum)

-14.4 (minimum)

XENPAK-10GB-LW

0.5 (maximum)

-8.2 (minimum)

0.5 (maximum)

-14.4 (minimum)

XENPAK-10GB-ER/ER+

4 (maximum)

-4.7 (minimum)

-1 (maximum)

-15.8 (minimum)

XENPAK-10GB-ZR

4 (maximum)

0 (minimum)

-7 (maximum)

-24 (minimum)

1 The maximum receive dBm value indicates the overload threshold of the receiver. The minimum receive dBm value indicates the lowest acceptable signal level coming into the receiver that allows correct signal recognition.

2 Both the average and the OMA specifications need to be met simultaneously.


Table A-10 lists the physical and environmental specifications for the XENPAK transceivers.

Table A-10 10-GB XENPAK Transceiver Physical and Environmental Specifications

Item
Specification

Dimensions (H x W x D)

0.47 x 1.42 x 4.76 in. (18 x 36 x 121 mm)

Weight

Typically under 10.58 ounces (300 grams)

Operating temperature

Storage temperature

32° to 122°F (0° to 50°C)

-40° to 185°F (-40° to 85°C)

Power consumption

8 W maximum1

1 The XENPAK transceiver port can support up to 8 W maximum. An SR XENPAK transceiver would typically consume less power than a ZR XENPAK transceiver, but Cisco doesn't offer strict specifications for each type.


10-GB X2 Transceivers

The 10GBASE-X X2 transceivers are supported on the Supervisor Engine 720-10GE uplink ports. Figure A-6 shows the X2 transceiver with the major features identified.

Figure A-6 10-GB X2 Transceiver

1

Transmit optical bore

6

Module connector

2

Receive optical bore

7

Latch (extended)

3

Latching sleeve (retracted)

8

Latching sleeve (extended)

4

EMI gasket

9

Latch (retracted)

5

Transceiver heat sink

   


Note X2 transceivers support patch cords with either PC or UPC connectors. The X2 transceivers do not support patch cords with APC connectors.


Table A-11 lists the cabling specifications for the X2 transceivers.

Table A-11 X2 Transceiver Cabling Specifications

X2 Transceiver Product Number
Connector Type
Wavelength (nm)
Cable Type
Core Size (microns)1
Modal Bandwidth (MHz/km
Maximum Cabling Distance2

X2-10GB-CX4

InfiniBand 4X

InfiniBand (copper)

49.2 feet (15 m)3

X2-10GB-SR

SC duplex

850

MMF

62.5

62.5

50.0

50.0

50.0

160

200

400

500

2000

85.3 feet (26 m)

108.3 feet (33 m)

216.5 feet (66 m)

269 feet (82 m)

984.3 feet (300 m)

X2-10GB-LRM

SC duplex

1310

MMF

62.5

50.0

50.0

500

400

500

721.8 feet (220 m)4

328 feet (100 m)

721.8 feet (220 m)

X2-10GB-LX4

SC duplex

1310

MMF

62.5

50.0

50.0

500

400

500

984.3 feet (300 m)5

787.4 feet (240 m)

984.3 feet (300 m)

X2-10GB-LR

SC duplex

1310

SMF (NDSF)6

8.6-9.5

6.21 miles (10 km)

X2-10GB-ER7

SC duplex

1550

SMF (NDSF)

8.6-9.5

24.84 miles (40 km)

X2-10GB-ZR

SC duplex

1530-1565

SMF (NDSF)

8.6-9.5

49.7 miles (80 km)

1 The numbers given for multimode fiber-optic (MMF) cable refer to the core diameter; the numbers for single-mode fiber refer to mode field diameter.

2 Cable distances are based on fiber loss. Additional factors, such as the number of splices and the optical quality of the fiber, can affect cabling distances.

3 The Cisco X2-10GB-CX4 transceiver supports link lengths of up to 49.2 feet (15 m) on CX4 cable. Cisco offers four CX4 cables: CAB-INF-28G-1= (1 meter cable), CAB-INF-28G-5= (5 meter cable), CAB-INF-28G-10= (10  meter cable), and CAB-INF-28G-15= (15 meter cable).

4 The Cisco X2-10GB-LRM transceiver supports link lengths of 220 meters on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met over FDDI-grade, OM1 and OM2 fibers, the transmitter 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). No mode conditioning patch cord is required for applications using OM3.

5 The Cisco X2-10GB-LX4 transceiver supports link lengths of 300 meters on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (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).

6 Nondispersion-shifted single-mode fiber-optic cable (ITU G.652 compliant).

7 Requires a 5 dB 1550 nm fixed loss attenuator for distances less than 20 km. The attenuator (WS-X6K-5DB-ATT=) is available from Cisco.


Table A-12 X2 Transceiver Optical Transmit and Receive Specifications 

X2 Transceiver Product Number
Transceiver Type
Transmit Power (dBm)
Receive Power (dBm)1
Transmit and Receive Wavelength (nm)

X2-10GB-SR

10GBASE-SR (850-nm MMF)

-1.2 (maximum)

-7.3 (minimum)

-1.0 (maximum)

-9.9 (minimum)

840 to 860

X2-10GB-LRM

10GBASE-LRM (1310-nm)

0.5 (maximum)

-6.5 (minimum)

0.5 (maximum)

-8.4 (minimum in average)

-6.4 (minimum in OMA)2

1260 to 1355

X2-10GB-LX4

10GBASE-LX4 (WWDM 1300-nm MMF)

-0.5 per lane (maximum)

-6.75 (minimum per lane in OMA)

-0.5 (maximum)

-14.4 per lane

Four lanes; overall range: 1269 to 1356

X2-10GB-LR

10GBASE-LR (1310-nm SMF)

0.5 (maximum)

-8.2 (minimum)

0.5 (maximum)

-14.4 (minimum)

Transmit—1260 to 1355

Receive—1260 to 15653

X2-10GB-ER

10GBASE-ER (1550-nm SMF)

4.0 (maximum)

-4.7 (minimum)

-1.0 (maximum)

-15.8 (minimum)

Transmit—1530 to 1565

Receive—1260 to 15653

X2-10GB-ZR

10GBASE-ZR

4.0 (maximum)

0.0 (minimum)

-7.0 (maximum)

-24.0 (minimum

Transmit—1530 to 1565

Receive—1530 to 15654

1 The maximum receive dBm value indicates the overload threshold of the receiver. The minimum receive dBm value indicates the lowest acceptable signal level coming into the receiver that allows correct signal recognition.

2 Both the average and the OMA specifications must be met simultaneously.

3 Even though the receiver can accept a wide wavelength range, the specifications are guaranteed for a signal within the transmit wavelength range.

4 The receiver can accept a wavelength range from 1260 to 1565 nm, but the specifications are guaranteed for a signal within the transmit wavelength range.


Figure A-7 X2 Transceiver Serial Number Label Locator

Table A-13 lists the physical and environmental specifications for the X2 transceiver.

Table A-13 10-GB X2 Transceiver Physical and Environmental Specifications

Item
Specification

Dimensions (H x W x D)

0.53 x 1.41 x 3.58 in. (13.46 x 36 x 91 mm)

Operating temperature

Storage temperature

32° to 122°F (0° to 50°C)

-40° to 185°F (-40° to 85°C)

Power consumption

4 W maximum1

1 The X2 transceiver port can support up to 4 W maximum. An SR X2 transceiver would typically consume less power than a ZR X2 transceiver, but Cisco doesn't offer strict specifications for each type.


WDM Transceivers

The supervisor engine uplink ports also support WDM transceivers. This section covers the following supported WDM transceivers.

CWDM GBIC Transceivers

DWDM GBIC Transceivers

CWDM SFP Transceivers

DWDM SFP Transceivers

DWDM XENPAK Transceivers

DWDM X2 Transceivers

CWDM GBIC Transceivers

GBIC transceivers are supported on the Supervisor Engine 2 uplink ports. Figure A-8 shows a typical CWDM GBIC transceiver with the major features identified.

Figure A-8 CWDM GBIC Transceiver

1

Color arrow on label

5

Optical bore dust plug

2

Alignment groove

6

Receive optical bore

3

Spring clip

7

Color dot

4

Transmit optical bore

   

Table A-14 lists the CWDM GBIC model color codes and wavelengths.

Table A-14 CWDM GBIC Transceivers Color Codes and Wavelengths 

Model Number
Color Code
CWDM GBIC Wavelength

CWDM-GBIC-1470=

Gray

1470 nm laser single-mode

CWDM-GBIC-1490=

Violet

1490 nm laser single-mode

CWDM-GBIC-1510=

Blue

1510 nm laser single-mode

CWDM-GBIC-1530=

Green

1530 nm laser single-mode

CWDM-GBIC-1550=

Yellow

1550 nm laser single-mode

CWDM-GBIC-1570=

Orange

1570 nm laser single-mode

CWDM-GBIC-1590=

Red

1590 nm laser single-mode

CWDM-GBIC-1610=

Brown

1610 nm laser single-mode


DWDM GBIC Transceivers

The DWDM GBIC transceivers are supported on the Supervisor Engine 2 uplink ports. Figure A-9 shows a DWDM GBIC transceiver. Table A-15 lists the DWDM GBIC product numbers, the wavelengths they operate at, and the associated ITU channel numbers.

Figure A-9 DWDM GBIC Transceiver Module

Table A-15 DWDM GBIC Transceiver Product Numbers and ITU Channel Numbers 

DWDM GBIC
Product Number
Description
ITU Channel

DWDM-GBIC-60.61=

1000BASE-DWDM 1560.61 nm GBIC

21

DWDM-GBIC-59.79=

1000BASE-DWDM 1559.79 nm GBIC

22

DWDM-GBIC-58.98=

1000BASE-DWDM 1558.98 nm GBIC

23

DWDM-GBIC-58.17=

1000BASE-DWDM 1558.17 nm GBIC

24

DWDM-GBIC-56.55=

1000BASE-DWDM 1556.55 nm GBIC

26

DWDM-GBIC-55.75=

1000BASE-DWDM 1555.75 nm GBIC

27

DWDM-GBIC-54.94=

1000BASE-DWDM 1554.94 nm GBIC

28

DWDM-GBIC-54.13=

1000BASE-DWDM 1554.13 nm GBIC

29

DWDM-GBIC-52.52=

1000BASE-DWDM 1552.52 nm GBIC

31

DWDM-GBIC-51.72=

1000BASE-DWDM 1551.72 nm GBIC

32

DWDM-GBIC-50.92=

1000BASE-DWDM 1550.92 nm GBIC

33

DWDM-GBIC-50.12=

1000BASE-DWDM 1550.12 nm GBIC

34

DWDM-GBIC-48.51=

1000BASE-DWDM 1548.51 nm GBIC

36

DWDM-GBIC-47.72=

1000BASE-DWDM 1547.72 nm GBIC

37

DWDM-GBIC-46.92=

1000BASE-DWDM 1546.92 nm GBIC

38

DWDM-GBIC-46.12=

1000BASE-DWDM 1546.12 nm GBIC

39

DWDM-GBIC-44.53=

1000BASE-DWDM 1544.53 nm GBIC

41

DWDM-GBIC-43.73=

1000BASE-DWDM 1543.73 nm GBIC

42

DWDM-GBIC-42.94=

1000BASE-DWDM 1542.94 nm GBIC

43

DWDM-GBIC-42.14=

1000BASE-DWDM 1542.14 nm GBIC

44

DWDM-GBIC-40.56=

1000BASE-DWDM 1540.56 nm GBIC

46

DWDM-GBIC-39.77=

1000BASE-DWDM 1539.77 nm GBIC

47

DWDM-GBIC-39.98=

1000BASE-DWDM 1539.98 nm GBIC

48

DWDM-GBIC-38.19=

1000BASE-DWDM 1538.19 nm GBIC

49

DWDM-GBIC-36.61=

1000BASE-DWDM 1536.61 nm GBIC

51

DWDM-GBIC-35.82=

1000BASE-DWDM 1535.82 nm GBIC

52

DWDM-GBIC-35.04=

1000BASE-DWDM 1535.04 nm GBIC

53

DWDM-GBIC-34.25=

1000BASE-DWDM 1534.25 nm GBIC

54

DWDM-GBIC-32.68=

1000BASE-DWDM 1532.68 nm GBIC

56

DWDM-GBIC-31.90=

1000BASE-DWDM 1531.90 nm GBIC

57

DWDM-GBIC-31.12=

1000BASE-DWDM 1531.12 nm GBIC

58

DWDM-GBIC-30.33=

1000BASE-DWDM 1530.33 nm GBIC

59


CWDM SFP Transceivers

The CWDM SFP transceivers are supported on the following supervisor engine uplink ports:

Supervisor Engine 32 (WS-SUP32-GE-3B and WS-S32-GE-PISA only)

Supervisor Engine 720 (WS-SUP720, WS-SUP720-3B, and WS-SUP720-3BXL)

Supervisor Engine 720-10GE (VS-S720-10G-3C and VS-S720-10G-3CXL) (2 ports)

Figure A-10 shows a CWDM SFP transceiver with the major features identified.

Figure A-10 CWDM SFP Transceiver

Table A-16 lists the DWDM SFP transceiver optical specifications.

Table A-16 CWDM SFP Transceiver Optical Specifications

Specification
Value

Transmitter spectral width

0.2 nm

Transmitter optical output power

0 dBm (minimum

5.0 dBm (maximum)

Receiver optical input wavelength

1450 nm (minimum)

1620 nm (maximum)

Receiver optical input power

-28.0 dBm (minimum)1

-29.0 dBm (minimum)2

-7.0 dBm (maximum)

1 At 2.12 Gbps, 140°F (60°C) case temperature.

2 At 1.25 Gbps, 140°F (60°C) case temperature.


Table A-17 lists the CWDM SFP transceivers, their associated color codes, and their wavelengths.

Table A-17 CWDM SFP Transceivers Color Codes and Wavelengths 

Model Number
Color Code
CWDM SFP Wavelength

CWDM-SFP-1470=

Gray

1470 nm laser, single-mode

CWDM-SFP-1490=

Violet

1490 nm laser, single-mode

CWDM-SFP-1510=

Blue

1510 nm laser, single-mode

CWDM-SFP-1530=

Green

1530 nm laser, single-mode

CWDM-SFP-1550=

Yellow

1550 nm laser, single-mode

CWDM-SFP-1570=

Orange

1570 nm laser, single-mode

CWDM-SFP-1590=

Red

1590 nm laser, single-mode

CWDM-SFP-1610=

Brown

1610 nm laser, single-mode


DWDM SFP Transceivers

The DWDM SFP transceivers are supported on the following supervisor engine uplink ports:

Supervisor Engine 32 (WS-SUP32-GE-3B and WS-S32-GE-PISA only)

Supervisor Engine 720 (WS-SUP720, WS-SUP720-3B, and WS-SUP720-3BXL)

Supervisor Engine 720-10GE (VS-S720-10G-3C and VS-S720-10G-3CXL) (2 ports)

The DWDM SFP transceivers support 32 nontunable ITU 100-GHz wavelengths that are compatible with the Cisco ONS DWDM channel scheme.

Table A-18 lists the DWDM SFP transceiver optical specifications.

Table A-18 DWDM SFP Transceiver Optical Specifications

Specification
Value

Transmitter spectral width

0.2 nm

Transmitter optical output power

0 dBm (minimum

4.0 dBm (maximum)

Receiver optical input wavelength

1530 nm (minimum)

1565 nm (maximum)

Receiver optical input power

-28.0 dBm (minimum)1

-22.0 dBm (minimum)2

-9.0 dBm (maximum)

1 Power-limited performance.

2 Noise-limited performance.


Table A-19 lists the DWDM SFP transceivers, their optical wavelengths, and their associated ITU channel numbers.

Table A-19 DWDM SFP Transceiver Module Product Numbers and
ITU Channel Numbers 

DWDM X2 Product Number
Description
ITU Channel

DWDM-SFP-60.61=

1000BASE-DWDM 1560.61 nm

21

DWDM-SFP-59.79=

1000BASE-DWDM 1559.79 nm

22

DWDM-SFP-5898=

1000BASE-DWDM 1558.98 nm

23

DWDM-SFP-5817=

1000BASE-DWDM 1558.17 nm

24

DWDM-SFP-5655=

1000BASE-DWDM 1556.55 nm

26

DWDM-SFP-5575=

1000BASE-DWDM 1555.75 nm

27

DWDM-SFP-5494=

1000BASE-DWDM 1554.94 nm

28

DWDM-SFP-5413=

1000BASE-DWDM 1554.13 nm

29

DWDM-SFP-5252=

1000BASE-DWDM 1552.52 nm

31

DWDM-SFP-5172=

1000BASE-DWDM 1551.72 nm

32

DWDM-SFP-5092=

1000BASE-DWDM 1550.92 nm

33

DWDM-SFP-5012=

1000BASE-DWDM 1550.12 nm

34

DWDM-SFP-4851=

1000BASE-DWDM 1548.51 nm

36

DWDM-SFP-4772=

1000BASE-DWDM 1547.72 nm

37

DWDM-SFP-4692=

1000BASE-DWDM 1546.92 nm

38

DWDM-SFP-4612=

1000BASE-DWDM 1546.12 nm

39

DWDM-SFP-4453=

1000BASE-DWDM 1544.53 nm

41

DWDM-SFP-4373=

1000BASE-DWDM 1543.73 nm

42

DWDM-SFP-4294=

1000BASE-DWDM 1542.94 nm

43

DWDM-SFP-4214=

1000BASE-DWDM 1542.14 nm

44

DWDM-SFP-4056=

1000BASE-DWDM 1540.56 nm

46

DWDM-SFP-3977=

1000BASE-DWDM 1539.77 nm

47

DWDM-SFP-3998=

1000BASE-DWDM 1539.98 nm

48

DWDM-SFP-3819=

1000BASE-DWDM 1538.19 nm

49

DWDM-SFP-3661=

1000BASE-DWDM 1536.61 nm

51

DWDM-SFP-3582=

1000BASE-DWDM 1535.82 nm

52

DWDM-SFP-3504=

1000BASE-DWDM 1535.04 nm

53

DWDM-SFP-3425=

1000BASE-DWDM 1534.25 nm

54

DWDM-SFP-3268=

1000BASE-DWDM 1532.68 nm

56

DWDM-SFP-3190=

1000BASE-DWDM 1531.90 nm

57

DWDM-SFP-3112=

1000BASE-DWDM 1531.12 nm

58

DWDM-SFP-3033=

1000BASE-DWDM 1530.33 nm

59


DWDM XENPAK Transceivers

The DWDM XENPAK transceivers are supported on the Supervisor Engine 32 (WS-SUP32-10GE-3B and WS-S32-10GE-PISA only) uplink ports. There are 32 nontunable ITU 100-GHz wavelengths that are compatible with the Cisco ONS DWDM channel scheme. The DWDM XENPAK transceivers support digital optical monitoring (DOM). Figure A-11 shows a DWDM XENPAK transceiver with the major features identified.

Figure A-11 DWDM XENPACK Optical Transceiver

1

Captive installation screw

3

Optical bore dust plug

2

Transmit optical bore

4

Receive optical bore


Table A-20 lists the DWDM XENPAK transceiver optical specifications.

Table A-20 DWDM XENPAK Transceiver Optical Specifications

Specification
Value

Transmitter spectral width

0.2 nm

Transmitter optical output power

-1.0 dBm (minimum

3.0 dBm (maximum)

Receiver optical input wavelength

1530 nm (minimum)

1565 nm (maximum)

Receiver optical input power

-24.0 dBm (minimum)1

-17.0 dBm (minimum 2

-7.0 dBm (maximum)

1 Power-limited performance.

2 Noise-limited performance.


Table A-21 lists the physical and environmental specifications for the DWDM XENPAK transceivers.

Table A-21 DWDM XENPAK Transceiver Physical and Environmental Specifications

Item
Specification

Dimensions (H x W x D)

0.47 x 1.42 x 4.76 in. (18 x 36 x 121 mm)

Weight

Typically under 10.58 ounces (300 grams)

Operating temperature

Storage temperature

32° to 122°F (0° to 50°C)

-40° to 185°F (-40° to 85°C)


Table A-22 lists the DWDM XENPAK transceivers, their wavelengths, and their associated ITU channel numbers.

Table A-22 DWDM XENPAK Transceiver Module Product Numbers and
ITU Channel Numbers 

DWDM XENPAK
Product Number
Description
ITU Channel

DWDM-XENPAK-60.61=

10GBASE-DWDM 1560.61 nm

21

DWDM-XENPAK-59.79=

10GBASE-DWDM 1559.79 nm

22

DWDM-XENPAK-58.98=

10GBASE-DWDM 1558.98 nm

23

DWDM-XENPAK-58.17=

10GBASE-DWDM 1558.17 nm

24

DWDM-XENPAK-56.55=

10GBASE-DWDM 1556.55 nm

26

DWDM-XENPAK-55.75=

10GBASE-DWDM 1555.75 nm

27

DWDM-XENPAK-54.94=

10GBASE-DWDM 1554.94 nm

28

DWDM-XENPAK-54.13=

10GBASE-DWDM 1554.13 nm

29

DWDM-XENPAK-52.52=

10GBASE-DWDM 1552.52 nm

31

DWDM-XENPAK-51.72=

10GBASE-DWDM 1551.72 nm

32

DWDM-XENPAK-50.92=

10GBASE-DWDM 1550.92 nm

33

DWDM-XENPAK-50.12=

10GBASE-DWDM 1550.12 nm

34

DWDM-XENPAK-48.51=

10GBASE-DWDM 1548.51 nm

36

DWDM-XENPAK-47.72=

10GBASE-DWDM 1547.72 nm

37

DWDM-XENPAK-46.92=

10GBASE-DWDM 1546.92 nm

38

DWDM-XENPAK-46.12=

10GBASE-DWDM 1546.12 nm

39

DWDM-XENPAK-44.53=

10GBASE-DWDM 1544.53 nm

41

DWDM-XENPAK-43.73=

10GBASE-DWDM 1543.73 nm

42

DWDM-XENPAK-42.94=

10GBASE-DWDM 1542.94 nm

43

DWDM-XENPAK-42.14=

10GBASE-DWDM 1542.14 nm

44

DWDM-XENPAK-40.56=

10GBASE-DWDM 1540.56 nm

46

DWDM-XENPAK-39.77=

10GBASE-DWDM 1539.77 nm

47

DWDM-XENPAK-39.98=

10GBASE-DWDM 1539.98 nm

48

DWDM-XENPAK-38.19=

10GBASE-DWDM 1538.19 nm

49

DWDM-XENPAK-36.61=

10GBASE-DWDM 1536.61 nm

51

DWDM-XENPAK-35.82=

10GBASE-DWDM 1535.82 nm

52

DWDM-XENPAK-35.04=

10GBASE-DWDM 1535.04 nm

53

DWDM-XENPAK-34.25=

10GBASE-DWDM 1534.25 nm

54

DWDM-XENPAK-32.68=

10GBASE-DWDM 1532.68 nm

56

DWDM-XENPAK-31.90=

10GBASE-DWDM 1531.90 nm

57

DWDM-XENPAK-31.12=

10GBASE-DWDM 1531.12 nm

58

DWDM-XENPAK-30.33=

10GBASE-DWDM 1530.33 nm

59


DWDM X2 Transceivers

The DWDM X2 transceivers are supported on the Supervisor Engine 720-10GE (VS-S720-10G-3C and VS-S720-10G-3CXL) uplink ports. There are 32 nontunable ITU 100-GHz wavelengths that are compatible with the Cisco ONS DWDM channel scheme. The DWDM X2 transceivers support digital optical monitoring (DOM). Figure A-12 shows the DWDM X2 transceiver with the major features identified.

Figure A-12 DWDM X2 Transceiver

1

Transmit optical bore

6

Module connector

2

Receive optical bore

7

Latch (extended)

3

Latching sleeve (retracted)

8

Latching sleeve (extended)

4

EMI gasket

9

Latch (retracted)

5

Transceiver heat sink

   

Table A-23 lists the DWDM X2 transceiver optical specifications.

Table A-23 DWDM X2 Transceiver Optical Specifications

Specification
Value

Transmitter spectral width

0.2 nm

Transmitter optical output power

-1.0 dBm (minimum

3.0 dBm (maximum)

Receiver optical input wavelength

1530 nm (minimum)

1565 nm (maximum)

Receiver optical input power

-23.0 dBm (minimum)

-7.0 dBm (maximum)


Table A-24 lists the DWDM X2 transceivers, their optical wavelengths, and their associated ITU channel numbers.

Table A-24 DWDM X2 Transceiver Module Product Numbers and
ITU Channel Numbers 

DWDM X2 Product Number
Description
ITU Channel

DWDM-X2-60.61=

10GBASE-DWDM 1560.61 nm

21

DWDM-X2-59.79=

10GBASE-DWDM 1559.79 nm

22

DWDM-X2-58.98=

10GBASE-DWDM 1558.98 nm

23

DWDM-X2-58.17=

10GBASE-DWDM 1558.17 nm

24

DWDM-X2-56.55=

10GBASE-DWDM 1556.55 nm

26

DWDM-X2-55.75=

10GBASE-DWDM 1555.75 nm

27

DWDM-X2-54.94=

10GBASE-DWDM 1554.94 nm

28

DWDM-X2-54.13=

10GBASE-DWDM 1554.13 nm

29

DWDM-X2-52.52=

10GBASE-DWDM 1552.52 nm

31

DWDM-X2-51.72=

10GBASE-DWDM 1551.72 nm

32

DWDM-X2-50.92=

10GBASE-DWDM 1550.92 nm

33

DWDM-X2-50.12=

10GBASE-DWDM 1550.12 nm

34

DWDM-X2-48.51=

10GBASE-DWDM 1548.51 nm

36

DWDM-X2-47.72=

10GBASE-DWDM 1547.72 nm

37

DWDM-X2-46.92=

10GBASE-DWDM 1546.92 nm

38

DWDM-X2-46.12=

10GBASE-DWDM 1546.12 nm

39

DWDM-X2-44.53=

10GBASE-DWDM 1544.53 nm

41

DWDM-X2-43.73=

10GBASE-DWDM 1543.73 nm

42

DWDM-X2-42.94=

10GBASE-DWDM 1542.94 nm

43

DWDM-X2-42.14=

10GBASE-DWDM 1542.14 nm

44

DWDM-X2-40.56=

10GBASE-DWDM 1540.56 nm

46

DWDM-X2-39.77=

10GBASE-DWDM 1539.77 nm

47

DWDM-X2-39.98=

10GBASE-DWDM 1539.98 nm

48

DWDM-X2-38.19=

10GBASE-DWDM 1538.19 nm

49

DWDM-X2-36.61=

10GBASE-DWDM 1536.61 nm

51

DWDM-X2-35.82=

10GBASE-DWDM 1535.82 nm

52

DWDM-X2-35.04=

10GBASE-DWDM 1535.04 nm

53

DWDM-X2-34.25=

10GBASE-DWDM 1534.25 nm

54

DWDM-X2-32.68=

10GBASE-DWDM 1532.68 nm

56

DWDM-X2-31.90=

10GBASE-DWDM 1531.90 nm

57

DWDM-X2-31.12=

10GBASE-DWDM 1531.12 nm

58

DWDM-X2-30.33=

10GBASE-DWDM 1530.33 nm

59


Mode-Conditioning Patch Cords

A mode-conditioning patch cord is recommended for use between optical transceivers that use lasers operating at 1300 nm and certain types of multimode fiber (MMF) optic cable. In situations where an optical transceiver operating at 1300 nm needs to be coupled to a short length of FDDI-grade, OM1, or OM2 fiber cable, a mode-conditioning patch cord needs to be inserted at both ends of the link to prevent the optical transceiver receivers from being overdriven. In situations where an 1300 nm laser transceiver needs to be coupled to a long length of FDDI-grade, OM1, or OM2 fiber cable, a MCP needs to be inserted at both ends of the link to reduce the effects of differential mode delay.

When an unconditioned laser source designed for operation on single-mode optical fiber is directly coupled to a multimode optical fiber cable, an effect known as differential mode delay (DMD) might result in a degradation of the modal bandwidth of the optical fiber cable.

This degradation results in a decrease in the link span (the distance between a transmitter and a receiver) that can be supported reliably. The effect of DMD can be overcome by conditioning the launch characteristics of a laser source. A practical means of performing this conditioning is to use a device called a mode-conditioning patch cord.

A mode-conditioning patch cord assembly is composed of duplex optical fibers, including a single-mode-to-multimode offset launch fiber connected to the transmitter, and a second conventional graded-index multimode optical fiber connected to the receiver. Table A-25 lists and describes the three types of mode-conditioning patch cords available from Cisco.

Table A-25 Mode-Conditioning Patch Cords 

Mode-Conditioning Patch Cord
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 male connectors at both ends. The patch cord is 3 meters (9.84 feet) in length. (See Figure A-13.)

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. (See Figure A-13.)

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. (See Figure A-14.)


Figure A-13 Mode Conditioning Patch Cord with SC (GBIC Transceiver) Connector

1

Beige color identifier

6

Multimode fiber (MMF) (either 62.5/125 or 50/125 micron)

2

To 1-Gigabit or 10-Gigabit Ethernet interface (SC male connector)

7

Single-mode fiber (SMF)

3

Rx (receiver)

8

Offset junction

4

Tx (transmitter)

9

To cable plant (SC male connector)

5

Blue color identifier

   

Figure A-14 Mode Conditioning Patch Cord with LC (SFP Transceiver) Connector

1

Gray color identifier

5

Single-mode fiber

2

To 1-Gigabit or 10-Gigabit Ethernet interface (LC male connector)

6

Offset junction

3

Blue color identifier

7

Beige color identifier

4

Multimode fiber (62.5/125 micron)

8

To cable plant (SC male connector)


Table A-26 lists the mode-conditioning patch cord requirements for 1-Gigabit and 10-Gigabit LX/LH, LX4, and LRM transceivers.

Table A-26 Optical Transceivers Using a Mode-Conditioning Patch Cord 

Transceiver
Mode-Conditioning Patch Cord Usage

GBIC LX/LH transceiver
(WS-G5486=)

SFP LX/LH transceiver
(GLC-LH-SM=)

When deploying a 1300 nm LX/LH transceiver, you must install a mode-conditioning patch cord between the LX/LH transceiver and the MMF cable on both the transmit and receive ends of the link. The mode-conditioning patch cord is required for:

FDDI-grade (62.5/125 micron) MMF fiber-optic cable

OM1 (62.5/125 micron) MMF fiber-optic cable

OM2 (50/125 micron) MMF fiber-optic cable

If you are using OM3 (50/125 micron, laser optimized) fiber-optic cable, you might not need to use a mode-conditioning patch card.

The mode-conditioning patch cord is required with the FDDI-grade, OM1, or OM2 cables when the link lengths are:

Less than 328 feet (100 m)—The mode-conditioning patch cord attenuates the signal which prevents overloading the receiver.

Note A 5dB attenuator can also be used to prevent overloading the receiver.

Greater than 984 feet (300 m)—The mode-conditioning patch cord reduces differential mode delay.

XENPAK LX4 transceiver
(XENPAK-10GB-LX4=)

X2 LX4 transceiver
(X2-10GB-LX4=)

When deploying a 1300 nm LX4 transceiver, you must install a mode-conditioning patch cord between the LX4 transceiver and the MMF cable on both the transmit and receive ends of the link. The mode-conditioning patch cord is required when using the following types of MMF cables:

FDDI-grade (62.5/125 micron) MMF fiber-optic cable

OM1 (62.5/125 micron) MMF fiber-optic cable

OM2 (50/125 micron) MMF fiber-optic cable

If you are using OM3 (50/125 micron, laser optimized) fiber-optic cable, you might not need to use a mode-conditioning patch card.

The mode-conditioning patch cord is required when the link lengths are:

Less than 328 feet (100 m)—The mode-conditioning patch cord attenuates the signal which prevents overloading the receiver.

Note A 5dB attenuator can also be used to prevent receiver overload.

984 feet (300 m)—The 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.

XENPAK LRM transceiver
(XENPAK-10GB-LRM=)

X2 LRM transceiver
(X2-10GB-LRM=)

When deploying a 1300 nm LRM transceiver, you must install a mode-conditioning patch cord between the LRM and the MMF cable on both the transmit and receive ends of the link. The mode-conditioning patch cord is required when using the following types of MMF cables:

FDDI-grade (62.5/125 micron) MMF fiber-optic cable

OM1 (62.5/125 micron) MMF fiber-optic cable

OM2 (50/125 micron) MMF fiber-optic cable

If you are using OM3 (50/125 micron, laser optimized) fiber-optic cable, you might not need to use a mode-conditioning patch card.

The mode-conditioning patch cord is required when the link lengths are:

Less than 328 feet (100 m)—The mode-conditioning patch cord attenuates the signal which prevents overloading the receiver.

Note A 5dB attenuator can also be used to prevent receiver overload.

722 feet (220 m)—The LRM transceiver supports link lengths of 722 feet (220 m) on standard FDDI-grade MMF. To ensure that specifications are met, the transmitter output should be coupled through a mode conditioning patch cord. To ensure that specifications are met over FDDI-grade, OM1, and OM2 fibers, the transmitter should be coupled through a mode-conditioning patch cord. No mode-conditioning patch cord is required for applications over OM3 fiber.


Cleaning the Fiber-Optic Connectors

Fiber-optic connectors are used to connect two optical fibers together. In a fiber-optic system, light is transmitted through an extremely small fiber core; 62.5 microns or less in diameter for multimode fiber-optic cable and 8 to 10 microns in diameter for single-mode fiber-optic cable. Because dust particles can range from a tenth of a micron to several microns in diameter, any contamination on the end face of the fiber core can degrade the performance of the connector interface where the two cores meet. Therefore, the connectors must be precisely aligned, and the connector interface must be absolutely free of trapped foreign material.


Note Fiber-optic cable connectors can be damaged by improper cleaning and connection procedures.



Caution Use extreme care when removing or installing connectors so that you do not damage the connector housing or scratch the end-face surface of the fiber. Always install protective covers on unused or disconnected components to prevent contamination. Always clean fiber connectors before installing them.

To clean the optical connectors, use a CLETOP cassette cleaner and follow the product directions. If a CLETOP cassette cleaner is not available or if you want additional cleaning information, refer to the Inspection and Cleaning Procedures for Fiber-Optic Connections document at the following URL:

http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml


Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051