Cisco Systems 7600 manual Cleaning the Fiber-Optic Connectors

Page 63

Appendix B Cable and Connector Specifications

Fiber-Optic Connectors

Cleaning the Fiber-Optic Connectors

Fiber-optic connectors are used to connect two fibers together. When these connectors are used in a communications system, proper connection is critical.

Fiber-optic connectors differ from electrical connectors or microwave connectors. In a fiber-optic system, light is transmitted through an extremely small fiber core. Because fiber cores are often 62.5 microns or less in diameter in multimode fiber (MMF) and 8.3 to 10 microns in single-mode fiber (SMF), dust particles and any contamination on the face of the fiber core can degrade the performance of the connector interface where the two cores meet. The connector must be precisely aligned, and the connector interface must be absolutely free of trapped contaminants.

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 fiber-optic connectors, use a CLETOP cassette cleaner (type A for SC connectors or type B for MT-RJ connectors) and follow the product instructions. If a CLETOP cassette cleaner is not available, follow these steps:

Step 1 Gently wipe the ferrules and end-face surfaces of the connector with an alcohol pad. Be sure that the pad makes full contact with the end-face surfaces. Wait five seconds for the surfaces to dry and repeat.

Step 2 Blow dry the connectors with canned, dry, oil-free, compressed air.

Step 3 Use a magnifying glass or inspection microscope to inspect the ferrule. If contaminants are visible, repeat the cleaning procedure.

The connectors used inside the system have been cleaned by the manufacturer and connected to the adapters in the proper manner. The operation of the system should be error-free if the customer provides clean connectors on the application side, follows the previous directions, and follows the listed guidelines:

•Clean the connectors using lens tissues before connecting to the adapters. Use pure alcohol to remove contamination.

•Do not clean the inside of the connector adapters.

•Do not use force or quick movements when connecting the fiber-optic connectors in the adapters.

•Cover the connector adapters to avoid contaminating the inside of the adapters while cleaning the chassis.

•Cover the connectors and adapters to prevent the inside of the adapters or the surface of the connectors from getting dirty when not using the connectors.

Note If the surface of the fiber-optic connector is not clean or does not have an even shine, repeat the process using a fresh surface of the alcohol pad.

 

 

Cisco 7600 Series Router Supervisor Engine and Route Switch Processor Guide

 

 

 

 

 

 

 

OL-10100-04

 

 

B-15

 

 

 

 

 

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Page 62 Page 64
Contents Text Part Number OL-10100-04 Americas HeadquartersCopyright 2007-2008 Cisco Systems, Inc. All rights reserved N T E N T S Safety Precautions for Module Installation and Removal Cleaning the Fiber-Optic Connectors B-15 OL-10100-04 Document History ContentsConvention Description Document OrganizationDocument Conventions Chapter Title DescriptionRelated Documentation OL-10100-04 Cisco 7600 Series Routers Cisco 7600 Product OverviewSupported Hardware Feature Description FeaturesFeature Description Physical Interface Addresses Port AddressesFAN Status MAC AddressesRoute Switch Processors Supervisor Engines Overview Product Number Description RSP720-3CXL-GE Product NumberWS-SUP32-GE-3B WS-SUP720-3BXLWS-X6K-S2-PFC2 Route Switch ProcessorWS-X6K-S2-MSFC2 WS-X6K-S2U-MSFC2RSP720 Features Unsupported Hardware and FeaturesSupported Chassis, Line Cards, and Modules RSP720 with 10GE Uplink Ports RSP720-10GE FeaturesUnsupported Chassis and Modules Unsupported FeaturesQoS on the RSP720-10GE RSP720-10GE Usage Guidelines and LimitationsQoS Configuration Guidelines Front-Panel Controls RSP720, RSP720-10GE, Sup720, Sup32 Supervisor Engine 720 and Supervisor EngineFront-Panel LEDs RSP720, RSP720-10GE, Sup720, Sup32 Component DescriptionColor Description Supervisor Engine 2 Front Panel Supervisor EngineSection on page 3-10 for more information Off when you insert a card Preparing for Installation or Removal Preventing Electrostatic Discharge Damage Safety Precautions for Module Installation and RemovalTools Required for Module Installation Determining Module LocationModule Slot Assignments Module Installing a Supervisor Engine or Route Switch ProcessorEjector Levers and Captive Installation Screws See Figure Removing a Supervisor Engine or Route Switch Processor Removing and Replacing Memory Hot Swapping OIR ModulesConnecting a Terminal Connecting to the Console PortConnecting to the Uplink Ports Connecting a ModemSupervisor Engine Module Uplink Ports Locating the Flash PC Card Write-Protection Switch Using Flash Memory CardsInstalling a Flash Memory Card Power Management and Environmental Monitoring Determining Software Feature SupportRemoving a Flash Memory Card Module Specifications SpecificationRegulatory Standards Compliance OL-10100-04 Limiting Connection Distances Cable and Connector SpecificationsTransceiver Module Part Numbers Uplink Port Transceiver ModulesProduct ID Description 1GE Uplink Ports and Cabling SpecificationsSMF MMFSMF ITU-T 10GE Uplink Ports and Cabling SpecificationsMHz km Micron Console Port Cabling Specifications and PinoutsGbic Module Cabling Specifications Console Port Cabling SpecificationsRate bps Distance feet Distance meters Console Port Signals and PinoutsDevice Signal RJ-45 Pin DB-9 PinRJ-45-to-RJ-45 RJ-45-to-DB-9 Console Rollover CableRTS DTR Rollover Cable Modem Adapter Signal RJ-45 Pin DB-25 PinRJ-45-to-DB-25 Terminal Console RJ-45-to-RJ-45 RJ-45-to-DB-25RJ-45 Connector Console Port Mode 2 Signaling and Pinouts Sup2 OnlyConsole Port Console Device RD+ TD+ Not used Side 2 Pin SignalFiber-Optic Connectors SC ConnectorsSide 1 Pin Signal Side 2 Pin Signal Figure B-5 SC Optical Connector MT-RJ ConnectorsFigure B-7 LC Fiber-Optic Connector LC ConnectorsCleaning the Fiber-Optic Connectors Patch Cord LX/LH Gbic and MMF Cable ConsiderationsPatch Cord Installation OL-10100-04 MAC Active LEDActive Console GBICs, connecting to Gigabit Ethernet cablesNvram Link LEDLX/LH Gbic PWR Mgmt LEDSystem LED Status LED
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