Cisco Systems UBR7225VXR specifications OL-17309-02

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Chapter 3 Installing the Cisco uBR7225VXR Router

Installing the Brackets on the Chassis

Caution Because the brackets support the weight of the entire chassis, be sure to use all of the required slotted screws to fasten the two rack-mount brackets to the rack posts. Figure 3-2 on page 3-4, Figure 3-3 on page 3-4, Figure 3-4 on page 3-5, and Figure 3-5 on page 3-5show typical installations in 19-inch, four-post and telco-type equipment racks.

Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and components, never attempt to lift the chassis with the handles on the power supplies or on the interface processors, or by the plastic panels on the front of the chassis. These handles were not designed to support the weight of the chassis. Statement 5

Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: Statement 1006

This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.

To install the chassis in the rack, complete the following steps:

Step 1 On the chassis, ensure that all captive installation screws on the network processing engine, each cable interface line card, and each power supply are tightened.

Step 2 Make sure that your path to the rack is unobstructed. If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.

Caution Two people should perform Step 3 through Step 6.

Step 3 Position the chassis so that the front end is closest to you; then lift the chassis and move it to the rack. To prevent injury, avoid sudden twists or moves.

Step 4 Slide the chassis into the rack, pushing it back until the brackets (installed at the front or rear of the chassis) meet the mounting strips or posts on both sides of the equipment rack.

Note The rack-mount bracket must be placed behind the rack post or mounting strip in the rear installation configuration. (See Figure 3-2 on page 3-4.)

Step 5 While keeping the brackets flush against the posts or mounting strips, position the router so that the holes in the brackets are aligned with those in the mounting strips.

 

 

Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

 

 

 

 

 

 

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Contents Text Part Number OL-17309-02 Americas HeadquartersPage N T E N T S AC Power Measuring the Downstream RF Signal at the Upconverter Output Maintaining the Cisco uBR7225VXR Router Coaxial Cables C-1 Viii Document Revision History PrefaceDocument Objectives Revision Date Change SummaryDocument Organization AudienceChapter Title Description Appendix G, Site Log Document ConventionsObtaining Documentation and Submitting a Service Request Cisco uBR7225VXR Universal Broadband Router Cisco uBR7225VXR OverviewOL-17309-02 Cable interface line card slot Cisco uBR7225VXR Router ChassisCard Slot and Logical Interface Numbering Cisco uBR7225VXR Network Interface OverviewCisco uBR7255VXR Chassis and Cable Interface Line Cards MAC-Layer AddressBasic Internet Access Services Supported System Configurations OverviewTwo-Way HFC Cable Network Example IP Telephony Services VPN ServicesHFC Telco ReturnNetwork Processing Engine Hardware Component DescriptionsNPE Comparisons Cisco Cable Interface Line Cards Power Supplies Fan Trays Cisco uBR7225VXR AC-Input Power SupplyCisco uBR7225VXR Fan Tray Internal Airflow-Top View Subchassis and Midplane Cisco uBR7225VXR ChassisTop Back CompactFlash DiskCisco uBR7225VXR Overview Hardware Component Descriptions OL-17309-02 Safety Recommendations InstallationLifting the Cisco uBR7225VXR Router Safely Lifting the Chassis Cisco uBR7246 Router Shown Safety with ElectricityPreventing Electrostatic Discharge Damage Site Requirements AC PowerSite Environment General Precautions Site Configuration Maintaining Normal OperationSpecification Minimum Maximum Required Network Information Power ConsiderationsBefore You Begin Rack-Mount and Cable-Management Kit Installation ToolsShipping Container Contents Equipment Required to Verify Your Plant’s RF SetupTwo-Way Data and VoIP Provisioning the Cable HeadendDiplex Filters Headend CertificationReceivers DHCP, DNS, TFTP, and TD Servers Dial-Up/Remote Access ServersVoIP Gateways and Gatekeepers Authentication, Authorization, and Accounting ServersVoIP Sgcp Pass-Through Interference Considerations Headend WiringEquipment Racks 17.32 23.875 21.875 Task Verified By Date Site Preparation ChecklistTask Verified By Date Component ChecklistsCisco uBR7225VXR Router Installation Checklist Installing the Cisco uBR7225VXR RouterCisco uBR7225VXR Router Chassis Rack-Mounting Options Typical 4-Post Equipment Rack Posts and Mounting Strips Rack-mount bracket Cable-Management Bracket Requirements Installing the Chassis in a Telco-Type RackRack-mount bracket Cable-management bracket Installing Rack-Mount Brackets on the Rear of the Chassis Installing the Brackets on the ChassisInstalling Rack-Mount Brackets on the Front of the Chassis Installing Rack-Mount Brackets in the Middle of the Chassis Installing the Chassis in the Rack OL-17309-02 OL-17309-02 Cabling Console and Auxiliary Port Connection Equipment Connecting Cable Interface Line Card CablesAuxiliary Port Signals Console Port SignalsPin Signal Direction Description Protective Grounding Connecting PowerConnecting to the AC-Input Power Supply 14 Connecting AC-Input Power Powering On the Cisco uBR7225VXR RouterConfiguring the Interfaces OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend Two-Way Data Headend Architecture RF and Digital Data Overview One-Way Data Headend ArchitectureMeasuring the Downstream RF Signal Connecting and Configuring the DownstreamInstalling and Configuring the Upconverter Page Viewing the Downstream if Signal on a Spectrum Analyzer Measuring the Downstream RF Signal at the Upconverter Output Overloaded Spectrum Analyzer Input Page OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 Connecting the Upstream to the Optical Receiver Connecting and Configuring the UpstreamDocsis Specification Channel Bandwidth Cisco MC11 Fpga30 km Fiber node Milliwatt Measure +10 dBmV at this point Testing the Upstream ConfigurationOptical receiver Downstream Optical +10 dBmV Receiver +13 dBmV Attenuator Measuring the Upstream RF Signal Using a Spectrum Analyzer Measuring the Upstream RF SignalOL-17309-02 OL-17309-02 29 Analyzing the Upstream RF Signal-64-Byte Data Packets Analyzing the Upstream RF Signal30 Analyzing the Upstream RF Signal-1500-Byte Data Packets OL-17309-02 Center Frequency Minimum Resolution Using the Zero-Span Method with Adjacent Upstream ChannelsSymbol Rate +/-1/2 Symbol Rate Bandwidth OL-17309-02 35 Vector Signal Analyzer Plot of Upstream Data Burst OL-17309-02 OL-17309-02 OL-17309-02 39 Preamble Amplitude Before Center Frequency Adjustment 41 Original Preamble Viewed with Accelerated Sweep Time OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend Configuring the Digital Signal OL-17309-02 OL-17309-02 Online Insertion and Removal Maintaining the Cisco uBR7225VXR RouterEnvironmental Monitoring Environmental Monitoring and Reporting FunctionsParameter High Warning High Critical Shutdown Reporting FunctionsRouter# show environment Temperature ranges and values are subject to change Fan Failures Overview TroubleshootingProviding Information Troubleshooting Problem Solving with Subsystems Problem Solving with SubsystemsIdentifying Startup Problems Cooling Subsystem Power SubsystemProcessor Subsystem Troubleshooting the Network Processing EngineTroubleshooting Cable Interface Line Cards Other Troubleshooting Information Websites Verifying the Downstream SignalTroubleshooting Verifying the Downstream Signal Description Specification Cisco uBR7225VXR Router SpecificationsBroadband Routers at the following URL Channel Symbol Rate Raw Data Rate Nominal Data RF SpecificationsBandwidth, MHz Msym/sec Mbps Rate, Mbps Channel Qpsk RawDownstream RF Channel Transmission Characteristics Docsis 1.0 Transmission CharacteristicsParameter Value Upstream RF Channel Transmission Characteristics Docsis 1.1 Transmission Characteristics EuroDOCSIS Transmission Characteristics Downstream RF Channel Transmission Characteristics Upstream RF Channel Transmission Characteristics Electrical Input and Output Parameter Value OL-17309-02 Coaxial Cables Cable SpecificationsIdentifying an RJ-45 Rollover Cable Console and Auxiliary Port Cables and PinoutsRJ-45-to-DB-9 Console Port Cables and PinoutsAuxiliary Port Cables and Pinouts Fast Ethernet Port Cables and PinoutsIdentifying an RJ-45 Crossover Cable RJ-45 Pin Identifying an RJ-45 Straight-Through CableRJ-45 Pin Description Figure C-5 Duplex SC Cable Connector Fiber-Optic Cables and ConnectorsAbout Wiring Standards Industry-Standard Wiring PlansTIA/EIA Standards Information Optical Fiber Color CodesPosition Color Pair Number Wire Number Solid Color Stripe Color Pin Number Telephone Wire Color CodesPair Number Wire Number Solid Color Stripe Color Pin Number White Blue Green Red Orange Black Yellow Pair Number Wire Number Solid Color Stripe ColorOL-17309-02 Http//developer.apple.com Http//atxnetworks.com Frequency Allocation TablesB1, G D1, K Standards ComparisonsNtsc Cable Television Channels and Relative Frequencies Freq MHz Carrier Visual Aural Table E-4 Freq MHz Carrier Visual Aural Table E-4 Ntsc M Cable Television Frequencies for Japan Table E-5 Japanese Channel Assignments Bandwidth Visual Carrier Aural Carrier PAL/SECAM Cable Television Channels and Relative FrequenciesChannel Channel Bandwidth Visual Carrier Aural Carrier Number MHz Table E-6 OL-17309-02 North American Channel Plans Manufacturers for Headend Provisioning RequirementsManufacturer Website or Phone Number Products/Model Agilent Agilent 89411A European Channel Plans Agilent Agilent 8591C Tektronix 2715 Sunrise Telecom AT2000R Site Log Initials Symbols GL-2 GL-3 GL-4 GL-5 GL-6 D E IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8
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