Statement 1055—Class 1/1M Laser
Invisible laser radiation is present. Do not expose to users of telescopic optics. This applies to Class 1/1M
laser products.
Warning
Statement 1056—Unterminated Fiber Cable
Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do not
view directly with optical instruments. Viewing the laser output with certain optical instruments, for example,
eye loupes, magnifiers, and microscopes, within a distance of 100 mm, may pose an eye hazard.
Warning
Maintaining Transceivers and Optical Cables
Transceivers and fiber-optic cables must be kept clean and dust free to maintain high signal accuracy and
prevent damage to the connectors. Contamination increases attenuation (loss of light) and should be below
0.35 dB.
Consider the following maintenance guidelines:
• Transceivers are static sensitive. To prevent ESD damage, wear an ESD-preventative wrist strap that is
connected to the grounded chassis.
• Do not remove and insert a transceiver more often than is necessary. Repeated removals and insertions
can shorten its useful life.
• Keep all optical connections covered when not in use. Clean them before using to prevent dust from
scratching the fiber-optic cable ends.
• Do not touch the ends of connectors. Touching the ends can leave fingerprints and cause other
contamination.
• Clean the connectors regularly; the required frequency of cleaning depends upon the environment. In
addition, clean connectors if they are exposed to dust or accidentally touched. Both wet and dry cleaning
techniques can be effective; refer to the fiber-optic connection cleaning procedures for your site.
• Inspect routinely for dust and damage. If you suspect damage, clean and then inspect fiber ends under a
microscope to determine if damage has occurred.
Cisco Nexus 9364C-H1 NX-OS Mode Switch Hardware Installation Guide
31
Connecting the Switch to the Network
Maintaining Transceivers and Optical Cables
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