Cisco Systems ASR1000 Manuel d'utilisateur télécharger pdf (Page 16)

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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation and Initial Configuration Guide

OL-13208-01

Chapter 3 Preparing Your Site for Installation

Preventing Electrostatic Discharge Damage

Site Planning Checklist

Table 3-7 is provided to help you perform and account for all the site planning tasks presented in this

appendix.

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. The performance routing engine (PRE), and

all line cards consist of a printed circuit card that is fixed in a metal carrier. Electromagnetic interference

(EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps

to protect the cards from ESD, use an antistatic strap each time you handle the modules. Handle the

carriers by the edges only; never touch the cards or connector pins.

Caution Always tighten the captive installation screws on all system components when you are installing them.

These screws prevent accidental removal of the module, provide proper grounding for the system, and

help to ensure that the bus connectors are properly seated in the backplane.

Static electricity can harm delicate components inside your system. To prevent static damage, discharge

static electricity from your body before you touch any of your system components, such as an

microprocessor. As you continue to work on your system, periodically touch an unpainted metal surface

on the computer chassis.

Following are guidelines for preventing ESD damage:

• Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact.

Before removing a card from the chassis, connect the equipment end of the strap to the ESD plug at

the bottom of the chassis below the power entry modules (Figure 3-1).

Table 3-7 Site Planning Checklist

Site Planning Requirements

The site meets the environmental requirements.

The site’s air conditioning system can compensate for the heat dissipation of the Cisco ASR

1000 Series.

The floor space that the Cisco ASR 1000 Series Routers occupy can support the weight of

the system).

Electrical service to the site complies with the requirements.

The electrical circuit servicing the Cisco ASR 1000 Series complies with the requirements).

Consideration has been given to the console port wiring, and limitations of the cabling

involved, according to TIA/EIA-232F.

The Cisco 1000 Series Router Ethernet cabling distances are within limitations.

The equipment rack in which you plan to install the Cisco ASR 1000 Series chassis complies

with requirements.

Careful consideration has be given to safety, ease of maintenance, and proper airflow in

selecting the location of the rack.

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Cisco Systems ASR1000 Manuel d'utilisateur Page 16