Cisco Systems CRS-1 General Reminders and Warnings, Fiber-OpticConnectors in a Multishelf System

Chapter 1 Overview

General Reminders and Warnings

General Reminders and Warnings

Review these reminders and warnings before inspecting and cleaning your fiber-optic connections.

Warning Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Statement 125

Warning Class 1M laser radiation when open. Do not view directly with optical instruments. Statement 281

Warning Laser radiation. Do not view directly with optical instruments. Class 1M laser product. Statement 283

Warning For diverging beams, viewing the laser output with certain optical instruments within a distance of 100 mm may pose an eye hazard. For collimated beams, viewing the laser output with certain optical instruments designed for use at a distance may pose an eye hazard. Statement 282

•Never touch the end face of the fiber connectors.

•Always inspect the connectors and adapters before you clean and before you make a connection.

–Always turn off any laser sources before you inspect fiber connectors, optical components, and bulkheads. Never look into a fiber while the system lasers are on. Never connect a fiber to a fiberscope while the system lasers are on.

–Always make sure that the cable is disconnected at both ends or that the card or pluggable receiver is removed from the chassis.

–Never use unfiltered handheld magnifiers and focusing optics to inspect fiber connectors.

–Always wear the appropriate safety glasses when required in your area. Be sure that any laser safety glasses meet federal and state regulations and are matched to the lasers used within your environment.

•Always keep a protective cap on unplugged fiber connectors.

–Always store unused protective caps in a resealable container to prevent the possibility of transferring dust to the fiber. Locate the containers near the connectors for easy access.

Fiber-Optic Connectors in a Multishelf System

The Cisco CRS-1 fiber-optic cleaning kit cleans all multiferrule (MT) optics in the Cisco CRS-1 router, which is shown in Figure 1-1and Figure 1-2. In a multishelf system, the connection points include:

•Optical array cable connectors: the connectors on the end of each fiber optic cable. These cables connect the S13 fabric cards in the line card chassis (LCC) to the OIMs in the fabic card chassis (FCC).

•Bulkhead array connectors: the optical connections on S13 fabric cards in the LCC and OIMs on the fabric card chassis (FCC).

Cisco CRS-1 Carrier Routing System Fiber-Optic Cleaning Guide

1-2 OL-8179-02