Preventing Electrostatic Discharge Damage - Cisco 2332TQ Hardware Installation Manual

Chapter 2 Installing a Cisco Nexus Fabric Extender
Table 2-3
Environment
New commercial building is not
subject to natural environmental
noise or man-made industrial
noise. This building contains a
standard office environment.
Existing commercial building is
not subject to natural
environmental noise or
man-made industrial noise. This
building contains a standard
office environment.
In all situations, grounding practices must comply with local National Electric Code (NEC)
Note
requirements or local laws and regulations.
Always ensure that all of the devices are completely installed and that the captive installation screws are
Note
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:
•
•
•
Proper Grounding Guidelines
Always use an ESD wrist strap and ensure that it makes maximum contact with bare skin.
ESD grounding straps are available with banana plugs, metal spring clips, or alligator clips. All
Cisco Nexus 2000 Series FEX chassis are equipped with a banana plug connector (identified by the
ground symbol next to the connector) somewhere on the port side exhaust panel. We recommend
that you use a personal ESD grounding strap equipped with a banana plug.
If you choose to use the disposable ESD wrist strap supplied with most FRUs or an ESD wrist strap
equipped with an alligator clip, you must attach the system ground lug to the chassis in order to
provide a proper grounding point for the ESD wrist strap.
Electromagnetic Noise
Severity Level
Low
Low
Cisco Nexus 2000 Series Hardware Installation Guide
Grounding the System
Grounding Recommendations
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.
Electromagnetic noise problems
are not anticipated, but
installing a grounding system is
always recommended.
Grounding recommendations
should be followed as much as
possible.
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