Cisco uBR10-LCP2-MC16E Guia de Instalação descarregar pdf (Página 6)

Power Guidelines

Follow these precautions and recommendations when planning power connections to the Cisco uBR10012 router:

• Check the power at your site before installation and periodically after installation to ensure that you are receiving clean

power. Install a power conditioner if necessary.

• Provide proper grounding.

• Make sure that frame ground is tied to a single building ground.

• Use a 6-AWG, copper ground conductor (minimum requirement) when attaching the chassis ground to a central office or

other interior ground system.

Caution The Cisco uBR10012 router installation must comply with all applicable codes and is approved for use with copper

conductors only. The ground bond fastening hardware should be of compatible material and preclude loosening,

deterioration, and electrochemical corrosion of hardware and joined material. Attachment of the chassis ground to

a central office or other interior ground system should be made with a 6-AWG, copper ground conductor at a

minimum.

Warning

A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.

Statement 1022

Power Connection Guidelines for DC-Powered Systems

The DC-input power supply allows the Cisco uBR10012 router to operate on either –48 or –60 VDC systems.

Warning

Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV) requirements in

IEC 60950 based safety standards.

Statement 1033

Note The Cisco uBR10012 router (using DC power supplies) is not shipped with wiring to connect to a DC power source.

You must provide input, return, and earthing (grounding) wiring at the site, and install and protect the wiring in

accordance with local and national wiring regulations.

Cabling Guidelines

When planning the location of a new system, keep in mind signal type, signal speed, and transmission medium. Also, consider

the distance limitations for signaling, EMI, and connector compatibility. The distance and rate limits shown are the

IEEE-recommended maximum speeds and distances for signaling purposes. Use this information as a guideline in planning your

network connections prior to installing the Cisco uBR10012 router.

Ethernet and Fast Ethernet Connections

The maximum distances for Ethernet and Fast Ethernet network segments and connections depend on the type of transmission

cable being used. Table 2 shows the maximum transmission distances between stations for Ethernet and Fast Ethernet

connections.

Table 2 Ethernet and Fast Ethernet Maximum Transmission Distances

Transceiver Speed Cable Type Transmission Mode Maximum Distance Between Stations

10 Mbps Category 3 Full duplex and half duplex 328 ft (100 m)

100 Mbps Category 5 Full duplex and half duplex 328 ft (100 m)

1 2 3 4 5 6 7 8 9 10 11 ... 45 46

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