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Preventing Electrostatic Discharge Damage
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.
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.
Note
Note
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when modules or other Field Replaceable Units (FRU
- a circuit board, part, or an assembly which can be easily removed and replaced without having to send the
entire product to a repair facility.) are improperly handled, results in intermittent or complete failures. Modules
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 protect the board from
ESD. Always wear an ESD grounding strap when handling modules.
Follow these guidelines for preventing ESD damage:
• Always wear an ESD wrist strap and ensure that it makes maximum contact with bare skin. ESD grounding
• If you choose to use the disposable ESD wrist strap supplied with most FRUs or an ESD wrist strap
Cisco MDS 9700 Series Switches Hardware Installation Guide
100
In all situations, grounding practices must comply with local National Electric Code (NEC) requirements or
local laws and regulations.
Always ensure that all the modules 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.
straps are available with banana plugs, metal spring clips, or alligator clips. All Cisco MDS 9700 Series
devices are equipped with a banana plug connector (identified by the ground symbol next to the connector)
somewhere on the front panel. We recommend that you use a personal ESD grounding strap equipped
with a banana plug.
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.
Installing the Cisco MDS 9700 Series Switches
Medium
Appropriate grounding practices must be
closely followed. 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 victim equipment.
Low
Appropriate grounding practices should be
followed as closely as possible.
Electromagnetic noise problems are not
anticipated, but installing a best practice
grounding system in a new building is often the
least expensive route and the best way to plan
for the future.
Low
Appropriate grounding practices should be
followed as much as possible. Electromagnetic
noise problems are not anticipated, but
installing a best practice grounding system is
always recommended.
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