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Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
OL-16478-02
Chapter 4 Installing the Cisco SCE8000 Chassis
Preparing for Installation
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. Port adapters and blades 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 boa rd
from ESD, use a preventive antistatic strap during handling.
Following are guidelines for preventing ESD damage:
• Always use an ESD wrist or ankle strap and ensure that it m akes good skin contact.
• Connect the equipment end of the strap to an unfinished chassis surface.
• When installing a component, use any available ejector levers or captive installation screws to
properly seat the bus connectors in the backplane or midplane. These devices prevent accidental
removal, provide proper grounding for the system, and help to ensure t hat bus connectors are
properly seated.
• When removing a component, use any available ejector levers or captive installation screws to
release the bus connectors from the backplane or midplane.
• Handle carriers by available handles or edges only; avoid touching the printed circ uit boards or
connectors.
• Place a removed component board-side-up on an antistatic surface or in a sta tic shielding container.
If you plan to return the component to the factory, immediately place it in a static shielding
container.
• Avoid contact between the printed circuit boards and clothing. The wrist strap o nly protects
components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
• Never attempt to remove the printed circuit board from the metal carrier.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohm (Mohm).
Environmental Requirements
Ensure adequate spacing between racks using the info rmation in the following table. Keep all of the
vents clear of obstructions, including dust and foreign conduct ive material, and away from the exhaust
ports of other equipment.
Power Requirements
Warning
Read the installation instructions before connecting the system to the power source.
Table 4-1 Chassis Airflow Requirements
Airflow Intake Airflow Exhaust Air Filter Option
Minimum
Clearance (walls)
Minimum
Horizontal
Separation
Right side Left side Not applicable 6 in (15 cm) 12 in (30.5)