Cisco ATM Cable Interface Processor ACIP-SM(=) Manuale di installazione e configurazione - Pagina 14
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ACIP Installation Prerequisites
Electrical Equipment
Follow these basic guidelines when working with any electrical equipment:
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Telephone Wiring
Use the following guidelines when working with any equipment that is connected to telephone
wiring or to other network cabling:
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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. An ACIP comprises a printed circuit
board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and
a handle are integral components of the carrier. Although the metal carrier helps to protect the board
from ESD, always use a preventive antistatic strap when handling an ACIP. Handle the carriers by
the handles and the carrier edges only; never touch the boards or connector pins.
Caution
prevent accidental removal, provide proper grounding for the system, and help ensure that the bus
connectors are properly seated in the backplane.
Following are guidelines for preventing ESD damage:
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14 ATM Cable Interface Processor (ACIP) Installation and Configuration
Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
Disconnect all power and external cables before moving a chassis; do not work alone if
potentially hazardous conditions exist.
Never assume that power is disconnected from a circuit; always check.
Do not perform any action that creates a potential hazard to people or makes equipment unsafe.
Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
Use caution when installing or modifying telephone lines.
Always tighten the captive installation screws on an ACIP. (See Figure 1.) These screws
Always use an ESD wrist or ankle strap and ensure that the strap makes good skin contact.
Connect the equipment end of the strap to a captive installation screw on an installed power
supply.
When installing an ACIP, use the ejector levers to properly seat the bus connectors in the
backplane, then tighten both (top and bottom) captive installation screws. (See Figure 1.) These
screws prevent accidental removal, provide proper grounding for the system, and help to ensure
that the bus connectors are seated in the backplane.