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Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
OL-17309-02
Installing Rack-Mount Brackets on the Rear of the Chassis 3-7
Installing Rack-Mount Brackets on the Front of the Chassis 3-8
Installing Rack-Mount Brackets in the Middle of the Chassis 3-9
Installing the Chassis in the Rack 3-10
Installing the Chassis in a Workbench or Tabletop Environment 3-12
Installing the Cable-Management Bracket on a Cisco uBR7225VXR Router in a Workbench or
Tabletop Environment 3-13
Cabling 3-13
Connecting Cable Interface Line Card Cables 3-14
Console and Auxiliary Port Connection Equipment 3-14
Console Port Signals 3-15
Auxiliary Port Signals 3-15
Protective Grounding 3-16
Connecting Power 3-16
Connecting to the AC-Input Power Supply 3-17
Powering On the Cisco uBR7225VXR Router 3-18
Configuring the Interfaces 3-19
CHAPTER
4 Connecting the Cisco uBR7225VXR Router to the Cable Headend 4-1
Two-Way Data Headend Architecture 4-2
One-Way Data Headend Architecture 4-3
RF and Digital Data Overview 4-3
Connecting and Configuring the Downstream 4-4
Installing and Configuring the Upconverter 4-4
Measuring the Downstream RF Signal 4-4
Measuring the Downstream RF Signal Using the Channel Power Option on a Spectrum Analyzer 4-5
Measuring the Downstream IF Signal at the Cisco uBR7225VXR Router 4-5
Measuring the Downstream RF Signal at the Upconverter Output 4-7
Measuring the Downstream RF Signal Using CATV Mode on a Spectrum Analyzer 4-11
Measuring the Downstream IF Signal at the Cisco uBR7225VXR Router Using CATV Mode 4-11
Measuring the Downstream RF Signal at the Upconverter Output Using CATV Mode 4-14
Connecting and Configuring the Upstream 4-18
Connecting the Upstream to the Optical Receiver 4-18
Testing the Upstream Configuration 4-19
Measuring the Upstream RF Signal 4-22
Measuring the Upstream RF Signal Using a Spectrum Analyzer 4-22
Analyzing the Upstream RF Signal 4-25
Using the Zero-Span Method with Adjacent Upstream Channels 4-28