Cisco Systems UBR7225VXR Measuring the Downstream RF Signal at the Upconverter Output

Contents

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

C H A P T E R 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
		Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
	OL-17309-02					v