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3-10
Cisco Nexus 2000 Series Hardware Installation Guide
OL-19013-05
Chapter3 Installing a Cisco Nexus 2000 Series Fabric Extender
Grounding the System
Note In all situations, grounding practices must comply with local National Electric Code (NEC)
requirements or local laws and regulations.
Note Always ensure that all of the d evices are completely in stalled and that the c aptive installation screws a re
fully tightened. In addition, en sure that all I/O cables and power c ords are properly seated. These
practices are normal installat ion practices and must be follow ed in all installations.
Preventing Electrostatic Discharge Damage
Electrostatic discha rge (ESD) damage, which can occ ur when modules or other Field R eplaceable Units
(FRUs) are improperly hand led, results in intermitt ent or complete failures. D evices consist of printed
circuit boards that are fixed in metal carriers. Electroma gnetic interference (EMI) s hielding and
connectors are integral components of the carrier. Although the metal carrier helps to protect the board
from ESD, always use an ESD grounding strap when handling modules.
For preventing ESD damage, follow these guidelines:
•Always use an ESD wrist strap and ensure that it makes maximum contact with bare skin.
Existing commercial building is
not subject to natural
environmental noise or
man-made industrial noise. This
building contains a standard
office environment. This
installation has a history of
malfunction due to
electromagnetic noise.
Medium Determine source and cause of
noise if possible, and mitigate as
closely as possible at the noise
source or reduce coupling from
the noise source to the affected
equipment. Grounding
recommendations must be
closely followed.
New commercial building is not
subject to natural environmental
noise or man-made industrial
noise. This building c ontains a
standard office environment.
Low Electromagnetic nois e problems
are not anticipated, but
installing a grounding system in
a new building is often the lea st
expensive route and the best way
to plan for the future. Grounding
recommendations should be
followed as closely as possible.
Existing commercial building is
not subject to natural
environmental noise or
man-made industrial noise. This
building contains a standard
office environment.
Low Electromagnetic nois e problems
are not anticipated, but
installing a grounding system is
always recommended.
Grounding recommendations
should be followed as much as
possible.
Table3-2 Proper Grounding Guidelines
Environment
Electromagnetic Noise Severity
Level Grounding Recommendations