Cisco Systems UBR7100E manual Attaching the System Ground Connection, Attaching the Ground Wire

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Chapter 3 Installing Cisco uBR7100 Series Universal Broadband Routers

Attaching the System Ground Connection

Attaching the System Ground Connection

Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

Before you connect power or turn on power to your router, we strongly recommend that you provide an adequate chassis ground (earth) connection for your router’s chassis. This connection is required for a central office that must comply with Telcordia bonding requirements; it is optional but highly recommended for other installations.

Note The Telcordia bonding connections are in addition to the grounding that is required for the AC power connection.

Chassis grounding receptacles for Telcordia bonding connections are provided on each side of the router, near the rear of the chassis.

Note One set of grounding receptacles should be used for the Telcordia bonding ground connection, and the other set can be used for attaching the cable management bracket (see Attaching the Ground Wire).

To ensure that the chassis grounding connection that you provide is adequate, you need the following parts and tools:

One grounding lug—Must have two 3.5-mm screw holes that have a 0.63-inch (16.002-mm) spacing between them, and a wire receptacle large enough to accept a 6-American Wire Gauge (AWG) multistrand, copper wire. This grounding lug is provided in the accessory kit.

Two slotted hexhead 3.5 x 7-mm thread-forming machine screws. These screws are provided in the accessory kit.

One grounding wire—6-AWG, 0.162-inch (4.115-mm) diameter, with approximately 0.108 inch (2.743 mm) of insulation, for a total wire diameter of approximately 0.27 inch (6.858 mm). The wire’s length is dependent on your router location and site environment. This wire is not available from Cisco Systems; it is available from any commercial cable vendor.

Flat-blade screwdriver

Crimping tool large enough to accommodate the diameter of the wire receptacle on your grounding lug

Wire stripper

Attaching the Ground Wire

To attach the grounding lug to the chassis grounding receptacles on the router, use the following procedure:

Step 1 Use the wire stripper to strip one end of the 6-AWG wire approximately 0.75 inch (19.05 mm).

Step 2 Insert the 6-AWG wire into the wire receptacle on the grounding lug.

Step 3 Use the crimping tool to carefully crimp the wire receptacle around the wire; this step is required to ensure that a proper mechanical connection.

Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide

 

OL-5916-01

3-5

 

 

 

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Contents Text Part Number OL-5916-01 Corporate HeadquartersCopyright 2004 Cisco Systems, Inc. All rights reserved Iii N T E N T SPreparing for Installation Maintenance EuroDOCSIS Upstream and Downstream Specifications A-5 Vii PrefacePurpose AudienceViii OrganizationRelated Documentation Chapter DescriptionConventions Bewaar Deze Instructies Safety WarningAviso Instruções Importantes DE Segurança Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Xii Spara Dessa AnvisningarXiii GEM Disse AnvisningerXiv Terms and Acronyms Xvi Xvii Obtaining DocumentationCisco.com Ordering DocumentationCisco Technical Support Website Submitting a Service RequestDocumentation Feedback Obtaining Technical AssistanceXix Definitions of Service Request SeverityObtaining Additional Publications and Information Preface Obtaining Additional Publications and Information Product Description Product OverviewCisco uBR7114 and Cisco uBR7114E Cisco uBR7100 Series Router Operational FeaturesCisco uBR7100 Series Models Cisco uBR7111 and Cisco uBR7111ECisco uBR7100 Series Routers Physical Description DS0 RF Cisco uBR7100 Series Front Panel RF Cable Interface Fixed Interface UnitsEthernet/Fast Ethernet LAN Interface Port Adapters Field-Replaceable UnitsWAN Technology Product Description End of Life Memory Size Product Number Spare Product Number Flash DisksSdram Memory Total Sdram Memory Configuration Product NumberChassis Slot and Logical Interface Numbering Functional OverviewRack-Mount and Cable-Management Kit Router# show interfaces Indentifing Interface Information in the SoftwareMAC Addresses Peripheral Component Interconnect Buses Online Insertion and RemovalNetwork Processor Card Memory Type Size Quantity Description Location FrontRouter# show version Other InterfacesDS0 RF System LEDs and Reset ButtonSYS RDY LED Label Color State FunctionOL-5916-01 Tools and Parts Required Preparing for InstallationShipping Container Contents Electrical Equipment Guidelines Safety GuidelinesPreparing for Installation Safety Guidelines Chassis Lifting Guidelines Electrostatic Discharge PreventionRack-Mounting Guidelines Site Requirement GuidelinesCisco uBR7114 Router Footprint and Outer Dimensions Temperature and Humidity Requirements Specification Minimum Maximum Power Connection GuidelinesInterference Considerations Plant Wiring GuidelinesPort Adapter WAN Connections Distance Limitations and Interface SpecificationsEthernet Connections Console Port Connections Console and Auxiliary Port ConsiderationsAuxiliary Port Connections OL-5916-01 Physical Placement Installing Cisco uBR7100 Series Universal Broadband RoutersCisco uBR7100 series router Chassis bottom Mounting the Chassis on a TabletopAttaching the Brackets Rack-Mounting the ChassisBrackets can also be installed with the front panel forward Installing the Chassis in a RackAttaching the System Ground Connection Attaching the Ground WireAttaching the Ground Wire to the Grounding Lug Attaching the Cable-Management Bracket Connecting Upstream and Downstream Ports Connecting to the Network10 Connecting the LAN Port to an Ethernet Hub Connecting the Fast Ethernet PortsConnecting to the Console Port Connecting the Console Port and Auxiliary Port12 Connecting a Modem to the Auxiliary Port Connecting a Modem to the Auxiliary Port13 Connecting the AC Power Cord Connecting the PowerChecking Conditions Prior to System Startup System StartupRestricted Rights Legend Starting the SystemSystem LEDs These LEDs remain off during normal operation of the router Before You Call for Technical Assistance Troubleshooting the InstallationTroubleshooting Overview Locating the Serial Number on Your Router Problem Solving Using a Subsystems ApproachIdentifying Startup Problems Troubleshooting Strategy for Startup Problems Troubleshooting the Processor Subsystem Troubleshooting the Power SubsystemTroubleshooting the Port Adapter and Fixed RF Ports Troubleshooting the Network Processor CardQueued messages Troubleshooting the Cooling SubsystemOnline Insertion and Removal MaintenanceEnvironmental Monitoring Environmental Monitoring and Reporting FunctionsParameter High Warning High Critical Displaying Environmental Status ReportsRouter# show environment last Fan Failures Flash Memory Card UsageInserting a Flash Memory Card Front Back Inserting and Ejecting a Flash Disk Memory Card Formatting a Flash Memory Card Removing a Flash Memory CardMemory Card section on page 6-8. Then proceed to Step Copying a Bootable Image onto a Flash Memory CardInsert the new flash memory card into slot Copying Bootable Images Between Flash Memory CardsUpgrading the Sdram Memory Modules Cover screws Removing the Chassis CoverRemoving the Cover Removing the Sdram DimmBack Front 10 Handling the Dimm Replacing the Sdram Dimm11 Inserting the Dimm Replacing the Chassis Cover12 Replacing the Chassis Cover Powering On the RouterOL-5916-01 Description Specification System SpecificationsPhysical Specifications Upstream Modulation If Output Router ModelUpstream Bandwidth Qpsk Data Throughput QAM Data Throughput RF SpecificationsDocsis Upstream and Downstream Specifications Specification Docsis Specifications1 Minimum Settings2Table A-6 Docsis Cable Downstream RF Specifications Minimum Settings2 Your Headend Settings EuroDOCSIS Upstream and Downstream SpecificationsTable A-8 EuroDOCSIS Cable Downstream RF Specifications Integrated Upconverter Specifications OL-5916-01 Manufacturer1 Website or Phone Number Products/Model Manufacturers for Headend Provisioning RequirementsNorth American Channel Plans Agilent Agilent 89411A Manufacturer Website or Phone Number Products/ModelEuropean Channel Plans Agilent Agilent 8591C Tektronix 2715 Sunrise Telecom AT2000R Coaxial Cables Cable SpecificationsIdentifying an RJ-45 Rollover Cable Console and Auxiliary Port Cables and PinoutsRJ-45-to-DB-9 Console Port Cables and PinoutsIdentifying an RJ-45 Crossover Cable Fast Ethernet Port Cables and PinoutsAuxiliary Port Cables and Pinouts RJ-45 Pin Description Identifying an RJ-45 Straight-Through CableFigure C-5 Duplex SC Cable Connector Fiber-Optic Cables and ConnectorsFigure C-8 Laser Caution Label Laser Classification LabelsOL-5916-01 Frequency Allocation Tables B1, G D1, K Standards ComparisonsNtsc Cable Television Channels and Relative Frequencies Freq MHz Carrier Visual Aural Channel Bandwidth Visual Center Freq MHz Carrier Visual Aural Channel Bandwidth Visual Center Ntsc M Cable Television Frequencies for Japan Table D-5 Japanese Channel Assignments Channel Bandwidth Visual Carrier Aural Carrier Number MHz PAL/SECAM Cable Television Channels and Relative FrequenciesChannel Bandwidth Visual Carrier Aural Carrier Number MHz Channel Bandwidth Visual Carrier Aural Carrier Number MHz Channel Bandwidth Visual Carrier Aural Carrier Number MHz OL-5916-01 Site Log Initials DateIN-1 D EIN-2 CPU reset buttonIN-3 PcmciaIN-4 HFC C-1IN-5 Location Memory options Memory types PCI busIN-6 SnmpIN-7 Tap manufacturersIN-8 Wrist straps, attaching
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