Chapter; Preparing For Installation - Cisco uBR-3x10 Hardware Installation And Cabling Manual

Site Requirements
Site Environment
Table 2-1
those within which the Cisco uBR 3x10 RF Switch continues to operate; however, a measurement that
is approaching the minimum or maximum of a range indicates a potential problem. You can maintain
normal operation by anticipating and correcting environmental anomalies before they approach a
maximum operating range.
Table 2-1
Specification
Temperature, ambient operating
Temperature, ambient nonoperating and storage
Site Configuration: Maintaining Normal Operation
Planning a proper location for the Cisco uBR 3x10 RF Switch and the layout of your equipment rack or
wiring closet is essential for successful system operation. Equipment placed too close together or
inadequately ventilated can cause system overtemperature conditions. In addition, chassis panels made
inaccessible by poor equipment placement can make system maintenance difficult. Following are
precautions that can help avoid problems during installation and ongoing operation.
General Precautions
Follow these general precautions when planning your equipment locations and connections:
•
•
•
Power Considerations
Follow these precautions and recommendations when planning power connections to a Cisco uBR 3x10
RF Switch:
•
•
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
2-6
lists the operating and nonoperating site temperature requirements. The following ranges are
Specifications for Operating and Nonoperating Environments
Use the show environment command regularly to check the internal system status. The
environmental monitor continually checks the interior chassis environment; it provides warnings for
high temperature and maximum and minimum voltages and creates reports on any occurrences. If
warning messages are displayed, take immediate action to identify the cause and correct the
problem.
We recommend keeping the Cisco uBR 3x10 RF Switch off the floor and out of any area that tends
to collect dust, excessive condensation, or water.
Follow the ESD prevention procedures in the
on page 2-4 to avoid damage to equipment. Damage from static discharge can cause immediate or
intermittent equipment failure.
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.
Install proper grounding to avoid damage from lightning and power surges.

Chapter 2

Minimum
32°F (0°C)
–4°F (–20°C)
"Preventing Electrostatic Discharge Damage" section

Preparing for Installation

Maximum
104°F (40°C)
149°F (65°C)
OL-1984-06