Cisco Systems ASR1000 Manuel d'utilisateur télécharger pdf (Page 12)

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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

Site Planning

Asynchronous Terminal Connections

The route processor provides a console port to connect a terminal or computer for local console access.

The RP1 also provides an auxiliary port to connect to a modem for remote dial-in console access.

Both ports have RJ-45 connectors, support RS-232 asynchronous data, and have distance

recommendations specified in the IEEE RS-232 standard.

Interference Considerations

When wires are run for any significant distance, there is a risk that stray signals will be induced on the

wires as interference. If interference signals are strong, they can cause data errors or damage to the

equipment.

The following sections describe sources of interference and how to minimize its effects on the

Cisco 1000 Series Router system.

Electromagnetic Interference

All equipment powered by AC current can propagate electrical energy that can cause electromagnetic

interference (EMI) and possibly affect the operation of other equipment. The typical sources of EMI are

equipment power cords and power service cables from electric utility companies.

Strong EMI can destroy the signal drivers and receivers in the Cisco 1000 Series Router and even create

an electrical hazard by causing power surges through power lines into installed equipment. These

problems are rare, but could be catastrophic.

To resolve these problems, you need specialized knowledge and equipment, which could consume

substantial time and money. However, you should ensure that you have a properly grounded and shielded

electrical environment, paying special attention to the need for electrical surge suppression.

Electromagnetic Emissions Certification:

• FCC 47 CFR Part 15 Class A

• VCCI Class A

• AS/NSZ Class A

• ICES-003 Class A

• EN55022/CISPR 22 Information Technology Equipment (Emissions)

• EN55024/CISPR 24 Information Technology Equipment (Immunity)

• EN300 386 Telecommunications Network Equipment (EMC)

• EN50082-1/EN61000-6-1 Generic Immunity Standard Same as for Cisco ASR 1002

CE marking:

• UL60950-1

• CSA C22.2 No. 60950-1-03

• EN 60950-1

• IEC 60950-1

• AS/NZS 60950.1

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Cisco Systems ASR1000 Manuel d'utilisateur Page 12