Network Router User Manual

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Cisco CRS-1 Carrier Routing System Fiber-Optic Cleaning Guide
OL-8179-02
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 1-1 and 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).