Preventing Electrostatic Discharge Damage; Site Planning Checklist - Cisco Catalyst 4900M Installation Manual

Chapter 2 Site Planning

Preventing Electrostatic Discharge Damage

Caution

Site Planning Checklist

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Examine your work area carefully for possible hazards such as moist floors,
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ungrounded power extension cables, and missing safety grounds.
Electrostatic discharge (ESD) damage occurs when electronic cards or
components are improperly handled and can result in complete or intermittent
failures. Follow these guidelines to prevent ESD damage:
Always use an ESD-preventive wrist or ankle strap, and ensure that it makes
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maximum contact with the skin.
When coming into contact with any internal components, always use a wrist
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strap connected to one of the following:
ESD wrist strap connector
–
Any unpainted grounded surface on the chassis or equipment rack
–
Periodically check the resistance value of the antistatic strap. The measurement
should be between 1 and 10 megohms (Mohms).
Handle cards by the edges only.
•
Avoid contact between the modules and clothing. The wrist strap protects
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only the card from ESD voltages on the body; ESD voltages on clothing can
still cause damage.
Table 2-1 lists the site planning activities that you should perform before you
install the Catalyst 4900M switch. Completing each activity helps to ensure a
successful switch installation.
Cisco Catalyst 4900M Switch Installation Guide
Site Planning Checklist
2-7