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Catalyst 4900 Series Switch Installation Guide
78-18039-02
Chapter 2 Site Planning
Site Planning Checklist
• Do not work alone when potentially hazardous conditions exist.
• Never assume that power has been disconnected from a circuit; always check.
• Do not perform any action that creates a potential hazard to people or makes
the equipment unsafe.
• Examine your work area carefully for possible hazards such as moist floors,
ungrounded power extension cables, and missing safety grounds.
Preventing Electrostatic Discharge Damage
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
maximum contact with the skin.
• When coming into contact with any internal components, always use a wrist
strap connected to one of the following:
–
ESD wrist strap connector
–
Any unpainted grounded surface on the chassis or equipment rack
Caution 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
only the card from ESD voltages on the body; ESD voltages on clothing can
still cause damage.
Site Planning Checklist
Table 2-2 lists the site planning activities that you should perform before you
install the switch. Completing each activity helps to ensure a successful switch
installation.