Cisco Systems UBR7100E manual Plant Wiring Guidelines, Interference Considerations

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Chapter 2 Preparing for Installation

Site Requirement Guidelines

Note The Cisco uBR7100 series router installation must comply with all applicable codes and is approved for use with copper conductors only. If installing the router in a central office environment that requires Telcordia grounding, 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 minimum 6-AWG, copper ground conductor.

To satisfy Telcordia grounding requirements, the chassis provides two threaded chassis grounding receptacles, located on the sides near the rear of the chassis, which are intended to be bonded directly to the central offices or other interior ground system. The chassis ground requires 3.5 mm screws, which are included. See “Attaching the System Ground Connection” section on page 3-5for instructions on attaching the system ground.

Plant Wiring Guidelines

Following are guidelines for setting up the plant wiring and cabling at your site. When planning the location of the new system, consider the distance limitations for signaling, EMC, and connector compatibility, as described in the following sections.

Interference Considerations

When wires are run for any significant distance in an electromagnetic field, interference can occur between the field and the signals on the wires. This fact has two implications for the construction of plant wiring:

•Bad wiring practice can result in radio interference emanating from the plant wiring.

•Strong electromagnetic interference (EMI), especially when it is caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the router, and can even create an electrical hazard by conducting power surges through lines and into equipment. (Review the safety warnings in the “Electrical Equipment Guidelines” section on page 2-3.)

Note To predict and remedy strong EMI, you may also need to consult experts in radio frequency interference (RFI).

If you use twisted-pair cable in your plant wiring with a good distribution of grounding conductors, the plant wiring is unlikely to emit radio interference. If you exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.

If wires exceed recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you may want to consult experts in electrical surge suppression and shielding.

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

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OL-5916-01

 

 

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Contents Corporate Headquarters Text Part Number OL-5916-01Copyright 2004 Cisco Systems, Inc. All rights reserved N T E N T S IiiPreparing for Installation Maintenance EuroDOCSIS Upstream and Downstream Specifications A-5 Audience PrefacePurpose ViiChapter Description OrganizationRelated Documentation ViiiConventions Safety Warning Bewaar Deze InstructiesAviso Instruções Importantes DE Segurança Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Spara Dessa Anvisningar XiiGEM Disse Anvisninger XiiiXiv Terms and Acronyms Xvi Ordering Documentation Obtaining DocumentationCisco.com XviiObtaining Technical Assistance Submitting a Service RequestDocumentation Feedback Cisco Technical Support WebsiteXix Definitions of Service Request SeverityObtaining Additional Publications and Information Preface Obtaining Additional Publications and Information Product Overview Product DescriptionCisco uBR7111 and Cisco uBR7111E Cisco uBR7100 Series Router Operational FeaturesCisco uBR7100 Series Models Cisco uBR7114 and Cisco uBR7114ECisco uBR7100 Series Routers Physical Description DS0 RF Cisco uBR7100 Series Front Panel RF Cable Interface Fixed Interface UnitsEthernet/Fast Ethernet LAN Interface Field-Replaceable Units Port AdaptersWAN Technology Product Description End of Life Flash Disks Memory Size Product Number Spare Product NumberTotal Sdram Memory Configuration Product Number Sdram MemoryChassis Slot and Logical Interface Numbering Functional OverviewRack-Mount and Cable-Management Kit Indentifing Interface Information in the Software Router# show interfacesMAC Addresses Online Insertion and Removal Peripheral Component Interconnect BusesNetwork Processor Card Front Memory Type Size Quantity Description LocationOther Interfaces Router# show versionSystem LEDs and Reset Button DS0 RFLED Label Color State Function SYS RDYOL-5916-01 Preparing for Installation Tools and Parts RequiredShipping Container Contents Safety Guidelines Electrical Equipment GuidelinesPreparing for Installation Safety Guidelines Electrostatic Discharge Prevention Chassis Lifting GuidelinesSite Requirement Guidelines Rack-Mounting GuidelinesCisco uBR7114 Router Footprint and Outer Dimensions Temperature and Humidity Requirements Power Connection Guidelines Specification Minimum MaximumPlant Wiring Guidelines Interference ConsiderationsPort Adapter WAN Connections Distance Limitations and Interface SpecificationsEthernet Connections Console and Auxiliary Port Considerations Console Port ConnectionsAuxiliary Port Connections OL-5916-01 Installing Cisco uBR7100 Series Universal Broadband Routers Physical PlacementMounting the Chassis on a Tabletop Cisco uBR7100 series router Chassis bottomRack-Mounting the Chassis Attaching the BracketsInstalling the Chassis in a Rack Brackets can also be installed with the front panel forwardAttaching the Ground Wire Attaching the System Ground ConnectionAttaching the Ground Wire to the Grounding Lug Attaching the Cable-Management Bracket Connecting to the Network Connecting Upstream and Downstream PortsConnecting the Fast Ethernet Ports 10 Connecting the LAN Port to an Ethernet HubConnecting the Console Port and Auxiliary Port Connecting to the Console PortConnecting a Modem to the Auxiliary Port 12 Connecting a Modem to the Auxiliary PortConnecting the Power 13 Connecting the AC Power CordSystem Startup Checking Conditions Prior to System StartupStarting the System Restricted Rights LegendSystem 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 Power Subsystem Troubleshooting the Processor SubsystemTroubleshooting the Network Processor Card Troubleshooting the Port Adapter and Fixed RF PortsTroubleshooting the Cooling Subsystem Queued messagesMaintenance Online Insertion and RemovalEnvironmental Monitoring and Reporting Functions Environmental MonitoringDisplaying Environmental Status Reports Parameter High Warning High CriticalRouter# show environment last Fan Failures Flash Memory Card UsageInserting a Flash Memory Card Front Back Inserting and Ejecting a Flash Disk Memory Card Removing a Flash Memory Card Formatting a Flash Memory CardCopying a Bootable Image onto a Flash Memory Card Memory Card section on page 6-8. Then proceed to StepCopying Bootable Images Between Flash Memory Cards Insert the new flash memory card into slotUpgrading the Sdram Memory Modules Removing the Chassis Cover Cover screwsRemoving the Sdram Dimm Removing the CoverBack Front Replacing the Sdram Dimm 10 Handling the DimmReplacing the Chassis Cover 11 Inserting the DimmPowering On the Router 12 Replacing the Chassis CoverOL-5916-01 Description Specification System SpecificationsPhysical Specifications Router Model Upstream Modulation If OutputSpecification Docsis Specifications1 Minimum Settings2 RF SpecificationsDocsis Upstream and Downstream Specifications Upstream Bandwidth Qpsk Data Throughput QAM Data ThroughputTable A-6 Docsis Cable Downstream RF Specifications EuroDOCSIS Upstream and Downstream Specifications Minimum Settings2 Your Headend SettingsTable 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 Manufacturer Website or Phone Number Products/Model Agilent Agilent 89411AEuropean Channel Plans Agilent Agilent 8591C Tektronix 2715 Sunrise Telecom AT2000R Cable Specifications Coaxial CablesConsole and Auxiliary Port Cables and Pinouts Identifying an RJ-45 Rollover CableConsole Port Cables and Pinouts RJ-45-to-DB-9Identifying an RJ-45 Crossover Cable Fast Ethernet Port Cables and PinoutsAuxiliary Port Cables and Pinouts Identifying an RJ-45 Straight-Through Cable RJ-45 Pin DescriptionFiber-Optic Cables and Connectors Figure C-5 Duplex SC Cable ConnectorLaser Classification Labels Figure C-8 Laser Caution LabelOL-5916-01 Frequency Allocation Tables Standards Comparisons B1, G D1, KNtsc 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 PAL/SECAM Cable Television Channels and Relative Frequencies Channel Bandwidth Visual Carrier Aural Carrier Number MHzChannel 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 Date InitialsD E IN-1CPU reset button IN-2Pcmcia IN-3HFC C-1 IN-4Location Memory options Memory types PCI bus IN-5Snmp IN-6Tap manufacturers IN-7Wrist straps, attaching IN-8
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