Cisco Systems uBR7246VXR Manual De Usuario

Check the following:

Site is capable of maintaining an ambient temperature of 32 to 104 degrees Fahrenheit

Site power is available and adequate 

Cabling requirements (type, distance)

Rack-mounting requirements (working space, proper airflow)

This unit is intended for installation in restricted access areas. A restricted access area can be accessed only 
through the use of a special tool, lock and key, or other means of security. Statement 1017

This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. 
Install only in accordance with national and local wiring regulations. Statement 1045

Table 1 lists the nominal operating and nonoperating environment requirements. Any measurements that approach the 
minimum or maximum of a range indicate a potential problem.

Follow these precautions and recommendations when planning power connections to the Cisco uBR7246VXR 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 the 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 headend or other 
interior ground system.

A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022

Temperature, ambient operating

Temperature, ambient nonoperating and storage

32° F (0° C)

-4° F (-20° C)

104° F (40° C)

149° F (65° C) 

Humidity, ambient (nonconducting) operating

10%

90%

Humidity, ambient (noncondensing) nonoperating and storage

5%

95%

Altitude, operating and nonoperating

–197 ft (–60 m)

13,123 ft (4000 m)

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5 to 200 Hz, 0.5 g (1 octet/min.)

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5 to 200 Hz, 1 g (1 octet/min.)

200 to 500 Hz, 2 g (1 octet/min.)