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3-10
Cisco Nexus 2000 Series Hardware Installation Guide
OL-19013-05
Chapter 3 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 devices are completely installed and that the captive installation screws are
fully tightened. In addition, ensure that all I/O cables and power cords are properly seated. These
practices are normal installation practices and must be followed in all installations.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when modules or other Field Replaceable Units
(FRUs) are improperly handled, results in intermittent or complete failures. Devices consist of printed
circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI) shielding 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 contains a
standard office environment.
Low Electromagnetic noise problems
are not anticipated, but
installing a grounding system in
a new building is often the least
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 noise problems
are not anticipated, but
installing a grounding system is
always recommended.
Grounding recommendations
should be followed as much as
possible.
Table 3-2 Proper Grounding Guidelines
Environment
Electromagnetic Noise Severity
Level Grounding Recommendations