Cisco Systems 78-16356-01 manual Temperature

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Chapter 5 Maintaining Your GSS

Maintaining Your Site Environment

This section discusses various environmental factors that can adversely affect GSS performance and longevity. It covers:

Temperature

Humidity

Altitude

Dust and Particles

Corrosion

Electrostatic Discharge

Electromagnetic and Radio Frequency Interference

Magnetism

Power Source Interruptions

Temperature

Temperature extremes can cause a variety of problems, including premature aging and failure of chips or mechanical failure of devices. Extreme temperature fluctuations can cause chips to become loose in their sockets and cause expansion and contraction of disk drive platters, resulting in read or write data errors.

To minimize the negative effects of temperature on GSS performance, follow these guidelines:

Ensure that the GSS is operated in an environment no colder than 32°F (0°C) or hotter than 104°F (40°C).

Ensure that the GSS has adequate ventilation. Do not place it within a closed-in wall unit or on top of cloth, which can act as insulation. Do not place it in direct sunlight. Do not place it next to a heat source of any kind, including heating vents during winter.

 

Cisco Global Site Selector 4491 Hardware Installation Guide

5-2

78-16356-01

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Contents Cisco Global Site Selector 4491 Hardware Installation Guide Page Cisco Global Site Selector 4491 Hardware Installation Guide Page N T E N T S Installing the GSS Maintaining Your GSS Cabling a Modem to the GSS B-4 Figure B-1 Page Port Specifications A-3 Xii Preface Audience How to Use This Guide Chapter/Appendix DescriptionRelated Documentation Document Title ProvidesSymbols and Conventions XviiBewaar Deze Instructies Varoitus Tärkeitä TurvallisuusohjeitaWarnung Wichtige Sicherheitshinweise Avvertenza Importanti Istruzioni Sulla SicurezzaTA Vare PÅ Disse Instruksjonene Aviso Instruções Importantes DE SegurançaVarning! Viktiga Säkerhetsanvisningar Spara Dessa AnvisningarXxii Introduction IntroductionSystem Hardware Features Front Panel Features Rear Panel FeaturesFront Panel Features Front Panel ViewIndicator Color State Indicates LED IndicatorsRear Panel Features Rear Panel ViewPorts and Connectors Console PortParameters Settings Pin Signal DefinitionShell Ethernet Connectors Ethernet Port 0 Pin NumbersPreparing for Installation Safety Preparing for Installation Safety Preparing for Installation Safety Preparing for Installation Safety General Precautions Maintaining Safety with ElectricityProtecting Against Electrostatic Discharge Preparing Your Site for Installation Choosing a Site for Installation EnvironmentalEnsuring Overcurrent Protection AC PowerGrounding the GSS Creating a Safe Environment Precautions for Rack-Mounting CablingRequired Tools and Equipment Installing the GSS Unpacking and Inspecting the GSS If the Product is DamagedInstalling Your GSS Installing the GSS in a Four-PostRack Rack Rail Components Attaching the Telescopic Rails to the Rack Assembly Telescoping the Rail Attaching Front Rail to the Right Side of the Rack Telescopic Rail Adjustment Screws Attaching Back Rail to the Right Side of the Rack Inserting the GSS into the Rack Attaching a Two-Post Rack Bracket to the GSS Sliding the GSS into the Four-post RackAttaching the Right Bracket to the Right Side of the GSS Installing the GSS on a Workbench or Tabletop Connecting Cables 10 GSS Back Panel Ports and ConnectorsConnecting AC Power Booting the GSS Establishing a Serial Console Connection Checking the Front Panel LEDs 11 GSS 4491 Front Panel LEDsRemoving or Replacing a GSS Installing the GSS Removing or Replacing a GSS Installing the GSS Removing or Replacing a GSS Troubleshooting the GSS Hardware Checking the BasicsChecking Connections Troubleshooting the GSS Hardware Checking Connections Troubleshooting the GSS Hardware Checking Connections Maintaining Your GSS Maintaining Your Site EnvironmentTemperature Humidity AltitudeCorrosion Dust and ParticlesElectrostatic Discharge Electromagnetic and Radio Frequency Interference Power Source Interruptions MagnetismUsing Power Protection Devices Surge ProtectorsUninterruptible Power Supplies Line ConditionersElectrical Specifications AC Specification OperationalEnvironmental Specifications Specification Operational Non-operationalPort Specifications Physical SpecificationsDescription Specification Appendix a Specifications Port Specifications Connecting a Modem to the GSS Console Port Configuring a Modem Table B-1connector pinouts for the GSS console portTable B-1 Console Port Connector Pinouts Figure B-2 Rear Panel Ports and Connectors Cabling a Modem to the GSSParameters Default Settings 78-16356-01 D E IN-2 IN-3 IN-4 IN-5 IN-6