Cisco Systems UBR-3X10 User Manual

Cisco uBR-3x10 RF Switch Hardware
Installation and Cabling Guide

June 6, 2008

Americas Headquarters

Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: [phone]

800 553-NETS (6387)

Fax: [phone]

Text Part Number: OL-1984-06

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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
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OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required
to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not
installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to
comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable
protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.

Modifying the equipment without Cisco’s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital
devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television
communications at your own expense.

You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its
peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:

• Turn the television or radio antenna until the interference stops.

• Move the equipment to one side or the other of the television or radio.

• Move the equipment farther away from the television or radio.

• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits
controlled by different circuit breakers or fuses.)

Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.

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OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

Copyright © 2004–2007 Cisco Systems, Inc. All rights reserved.

Preface

This preface describes the objectives, intended audience, and organization of this document and explains
how to find additional information on related products and services. This preface contains the following
sections:

• Document Objectives, page 3

• Audience, page 3

• Scope, page 4

• Document Organization, page 4

• Document Conventions, page 4

• Related Documentation, page 10

• Obtaining Documentation, page 11

• Documentation Feedback, page 12

• Obtaining Technical Assistance, page 12

• Obtaining Additional Publications and Information, page 13

Document Objectives

Use this document as a guide when installing and cabling the Cisco uBR 3x10 RF Switch at the cable
headend or distribution hub.

Audience

This guide is intended for cable system installers and technicians who physically install and connect the
Cisco uBR 3x10 RF Switch and associated equipment at the cable headend or distribution hub. Cable
system installers and technicians should be familiar with their cable plant's base operating parameters
and service offerings.

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

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Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

3

Scope

Tip Statement numbers (Statement 1030) at the end of a warning refer to specific warnings and their

translations found in the Regulatory Compliance and Safety Information for the Cisco RF Switch.

Scope

The guide provides installation and cabling information for the Cisco uBR 3x10 RF Switch. Refer to the
“Related Documentation” section on page 10 for related Cisco publications that provide configuration
information for the Cisco uBR 3x10 RF Switch.

Document Organization

This hardware installation guide is organized into the following chapters and appendixes:

Chapter Title Description

Chapter 1, “Cisco uBR-3x10 RF
Switch Overview”

Chapter 2, “Preparing for
Installation”

Chapter 3, “Installing the
Cisco RF Switch”

Chapter 4, “Cabling the RF Switch
With the Cisco uBR10012 CMTS
Cable Interface Line Cards”

Chapter 6, “Troubleshooting” Provides basic Cisco uBR 3x10 RF Switch troubleshooting

Appendix A, “Specifications and
Component Part Numbers”

Preface

Describes the Cisco uBR 3x10 RF Switch chassis and
components, illustrating the supported system configurations.

Describes safety considerations, tools, and other equipment
required to prepare your site.

Provides instructions to install and connect cables to the chassis.

Provides instructions for connecting Cisco uBR 3x10 RF Switch
cable network redundancy cables in a Cisco uBR10012 CMTS
environment.

information.

Provides Cisco uBR 3x10 RF Switch system specifications.

Document Conventions

This guide uses the following conventions:

Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in

this manual.

Caution Means reader be careful. You are capable of doing something that might result in equipment damage or

loss of data.

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

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Preface

Tip Means the following information might help you solve a problem.

Warning Definition

Document Conventions

Warning

Waarschuwing

Varoitus

IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar
with standard practices for preventing accidents. Use the statement number provided at the end of
each warning to locate its translation in the translated safety warnings that accompanied this
device.

SAVE THESE INSTRUCTIONS

BELANGRIJKE VEILIGHEIDSINSTRUCTIES

Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan
veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij
elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van de standaard
praktijken om ongelukken te voorkomen. Gebruik het nummer van de verklaring onderaan de
waarschuwing als u een vertaling van de waarschuwing die bij het apparaat wordt geleverd, wilt
raadplegen.

BEWAAR DEZE INSTRUCTIES

TÄRKEITÄ TURVALLISUUSOHJEITA

Tämä varoitusmerkki merkitsee vaaraa. Tilanne voi aiheuttaa ruumiillisia vammoja. Ennen kuin
käsittelet laitteistoa, huomioi sähköpiirien käsittelemiseen liittyvät riskit ja tutustu
onnettomuuksien yleisiin ehkäisytapoihin. Turvallisuusvaroitusten käännökset löytyvät laitteen
mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta varoitusten lopussa näkyvien
lausuntonumeroiden avulla.

Statement 1071

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Attention

SÄILYTÄ NÄMÄ OHJEET

IMPORTANTES INFORMATIONS DE SÉCURITÉ

Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant
entraîner des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez
conscient des dangers liés aux circuits électriques et familiarisez-vous avec les procédures
couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions des
avertissements figurant dans les consignes de sécurité traduites qui accompagnent cet appareil,
référez-vous au numéro de l'instruction situé à la fin de chaque avertissement.

CONSERVEZ CES INFORMATIONS

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

5

Document Conventions

Preface

Warnung

Avvertenza

Advarsel

WICHTIGE SICHERHEITSHINWEISE

Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu Verletzungen führen
kann. Machen Sie sich vor der Arbeit mit Geräten mit den Gefahren elektrischer Schaltungen und
den üblichen Verfahren zur Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder
Warnung angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den übersetzten
Sicherheitshinweisen, die zusammen mit diesem Gerät ausgeliefert wurden.

BEWAHREN SIE DIESE HINWEISE GUT AUF.

IMPORTANTI ISTRUZIONI SULLA SICUREZZA

Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli
relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti.
Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per individuare le
traduzioni delle avvertenze riportate in questo documento.

CONSERVARE QUESTE ISTRUZIONI

VIKTIGE SIKKERHETSINSTRUKSJONER

Dette advarselssymbolet betyr fare. Du er i en situasjon som kan føre til skade på person. Før du
begynner å arbeide med noe av utstyret, må du være oppmerksom på farene forbundet med
elektriske kretser, og kjenne til standardprosedyrer for å forhindre ulykker. Bruk nummeret i slutten
av hver advarsel for å finne oversettelsen i de oversatte sikkerhetsadvarslene som fulgte med denne
enheten.

Aviso

¡Advertencia!

TA VARE PÅ DISSE INSTRUKSJONENE

INSTRUÇÕES IMPORTANTES DE SEGURANÇA

Este símbolo de aviso significa perigo. Você está em uma situação que poderá ser causadora de
lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha conhecimento dos
perigos envolvidos no manuseio de circuitos elétricos e familiarize-se com as práticas habituais de
prevenção de acidentes. Utilize o número da instrução fornecido ao final de cada aviso para
localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo.

GUARDE ESTAS INSTRUÇÕES

INSTRUCCIONES IMPORTANTES DE SEGURIDAD

Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los
procedimientos estándar de prevención de accidentes. Al final de cada advertencia encontrará el
número que le ayudará a encontrar el texto traducido en el apartado de traducciones que acompaña
a este dispositivo.

GUARDE ESTAS INSTRUCCIONES

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

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Preface

Document Conventions

Varning!

VIKTIGA SÄKERHETSANVISNINGAR

Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och
känna till vanliga förfaranden för att förebygga olyckor. Använd det nummer som finns i slutet av
varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna
anordning.

SPARA DESSA ANVISNINGAR

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Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

7

Document Conventions

Preface

Aviso

Advarsel

INSTRUÇÕES IMPORTANTES DE SEGURANÇA

Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões
corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os
circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o
número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de
segurança traduzidos que acompanham o dispositivo.

GUARDE ESTAS INSTRUÇÕES

VIGTIGE SIKKERHEDSANVISNINGER

Dette advarselssymbol betyder fare. Du befinder dig i en situation med risiko for
legemesbeskadigelse. Før du begynder arbejde på udstyr, skal du være opmærksom på de
involverede risici, der er ved elektriske kredsløb, og du skal sætte dig ind i standardprocedurer til
undgåelse af ulykker. Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de
oversatte advarsler, der fulgte med denne enhed.

GEM DISSE ANVISNINGER

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

8

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Preface

Document Conventions

OL-1984-06

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

9

Related Documentation

Related Documentation

For high availablity (HA) information, see:

Preface

• N+1 Redundancy Using the Cisco RF Switch at the following URL:

http://www.cisco.com/en/US/partner/tech/tk86/tk804/technologies_tech_note09186a0080204374.s
html

• N+1 Solution for the uBR10012 at the following url:

http://www.cisco.com/en/US/partner/products/hw/cable/ps2209/products_tech_note09186a00801f

7638.shtml

• N+1 Solution for the uBR7200 with MC28C or MC16x Cards at the following URL:

http://www.cisco.com/en/US/customer/tech/tk86/tk804/technologies_tech_note09186a008020

5618.shtml

• N+1 Redundancy using the Vecima HD4040 Upconverter at the following URL:

http://www.cisco.com/en/US/customer/tech/tk86/tk804/technologies_tech_note09186a00801f76

22.shtml

• N+1 Feature Updates (N+1/5x20 and N+1/CLI sync) at the following URLs:

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cmtsfg/index.htm

http://www.cisco.com/en/US/products/hw/cable/ps2217/products_configuration_guide_chapter
09186a008015096c.html

• “N+1 Redundancy for the Cisco CMTS" chapter of the Cisco Cable Modem Termination System

Feature Guid e , at the following URL:

http://www.cisco.com/en/US/products/hw/cable/ps2217/products_feature_guide09186a0080150
96c.html

For installation information, see:

10

• Rack-Mounting the Cisco RF Switch with the Cisco uBR10012 CMTS, at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/cable/rfswitch/index.htm

• Rack-Mounting the Cisco RF Switch with the Cisco uBR7246VXR CMTS, at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/cable/rfswitch/index.htm

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

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Preface

• Cabling the Cisco uBR 3x10 RF Switch, at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/cable/rfswitch/index.htm

• Vecima HD4040 series IF-to-RF upconverter, at the following URL:

http://www.vecima.com

For other information, see:

• Cisco uBR 3x10 Switch Documentation Roadmap, at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/cable/rfswitch/rdmp310.htm

• Regulatory Compliance and Safety Information for the Cisco RF Switch, at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/cable/rfswitch/rfs_rcsi.htm

• Warranty information, at the following URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm

Obtaining Documentation

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several
ways to obtain technical assistance and other technical resources. These sections explain how to obtain
technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Ordering Documentation

You can find instructions for ordering documentation at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

You can order Cisco documentation in these ways:

• Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from

the Ordering tool:

http://www.cisco.com/en/US/partner/ordering/index.shtml

• Nonregistered Cisco.com users can order documentation through a local account representative by

calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in
North America, by calling 800 553-NETS (6387).

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11

Documentation Feedback

Documentation Feedback

You can send comments about technical documentation to [e-mail].

You can submit comments by using the response card (if present) behind the front cover of your
document or by writing to the following address:

Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco
Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical
Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical
Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service
contract, contact your reseller.

Preface

Cisco Technical Support Website

The Cisco Technical Support Website provides online documents and tools for troubleshooting and
resolving technical issues with Cisco products and technologies. The website is available 24 hours a day,
365 days a year at this URL:

http://www.cisco.com/techsupport

Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password.
If you have a valid service contract but do not have a user ID or password, you can register at this URL:

http://tools.cisco.com/RPF/register/register.do

Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3
and S4 service requests are those in which your network is minimally impaired or for which you require
product information.) After you describe your situation, the TAC Service Request Tool automatically
provides recommended solutions. If your issue is not resolved using the recommended resources, your
service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at
this URL:

http://www.cisco.com/techsupport/servicerequest

For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone.
(S1 or S2 service requests are those in which your production network is down or severely degraded.)
Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business
operations running smoothly.

12

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Preface

To open a service request by telephone, use one of the following numbers:

Asia-Pacific: [phone] (Australia: 1 800 805 227)
EMEA: [phone]
USA: 1 800 553 2447

For a complete list of Cisco TAC contacts, go to this URL:

http://www.cisco.com/techsupport/contacts

Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity
definitions.

Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You
and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your
business operation are negatively affected by inadequate performance of Cisco products. You and Cisco
will commit full-time resources during normal business hours to resolve the situation.

Severity 3 (S3)—Operational performance of your network is impaired, but most business operations
remain functional. You and Cisco will commit resources during normal business hours to restore service
to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or
configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online
and printed sources.

• Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit

Cisco Marketplace, the company store, at this URL:

http://www.cisco.com/go/marketplace/

• The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as

ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://cisco.com/univercd/cc/td/doc/pcat/

• Cisco Press publishes a wide range of general networking, training and certification titles. Both new

and experienced users will benefit from these publications. For current Cisco Press titles and other
information, go to Cisco Press at this URL:

http://www.ciscopress.com

• Pack et magazine is the Cisco Systems technical user magazine for maximizing Internet and

networking investments. Each quarter, Packet delivers coverage of the latest industry trends,
technology breakthroughs, and Cisco products and solutions, as well as network deployment and
troubleshooting tips, configuration examples, customer case studies, certification and training
information, and links to scores of in-depth online resources. You can access Packet magazine at this
URL:

http://www.cisco.com/packet

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13

Obtaining Additional Publications and Information

• iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies

learn how they can use technology to increase revenue, streamline their business, and expand
services. The publication identifies the challenges facing these companies and the technologies to
help solve them, using real-world case studies and business strategies to help readers make sound
technology investment decisions. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

• Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering

professionals involved in designing, developing, and operating public and private internets and
intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

• World-class networking training is available from Cisco. You can view current offerings at

this URL:

http://www.cisco.com/en/US/learning/index.html

Preface

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Cisco uBR-3x10 RF Switch Overview

This chapter describes the Cisco uBR 3x10 RF Switch. The chapter contains the following sections:

• About the Cisco uBR 3x10 RF Switch, page 1-1

• Hardware Component Descriptions, page 1-4

• Cable Kits, page 1-10

About the Cisco uBR 3x10 RF Switch

The Cisco uBR 3x10 RF Switch is designed to work with the Cisco uBR10012 CMTS or the
Cisco uBR7246VXR CMTS in a cable headend or hub to provide N+1 redundancy for applications such
as Voice over IP (VoIP).

The Cisco uBR 3x10 RF Switch is a rack-mount unit that contains the RF combiners and splitters,
RF switches, and switch drivers. The RF switch uses Cisco RF Switch logic, and a Simple Network
Management Protocol (SNMP) control interface. The Cisco uBR 3x10 RF Switch can be controlled
using SNMP from the Cisco uBR10012 CMTS or the Cisco uBR7246VXR CMTS.

CHAP T ER

1

Chassis Features

The Cisco uBR 3x10 RF Switch chassis features:

• One power-supply module that provides either 100 to 240 VAC or –48 to –60 VDC power to the

• One Ethernet controller module that provides SNMP control for automatic redundancy channel

• Ten upstream (low-frequency) switch modules that provide 75-ohm termination and automatic

• Three downstream (high-frequency) switch modules that provide 75-ohm termination and automatic

• Eight power divider assemblies used to route signals to and from the appropriate upstream or

• One midplane assembly that distributes power and control signals from the power supply and

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Cisco uBR 3x10 RF Switch chassis.

selection.

upstream redundancy switching from 5 to 70 MHz.

downstream redundancy switching from 54 to 860 MHz.

downstream assemblies or protect interfaces.

Ethernet controller to the upstream and downstream switch assemblies.

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

1-1

About the Cisco uBR 3x10 RF Switch

1

2

3

4

5

6

7

Other chassis features include:

• Front panel serviceability—for no downtime on RF interfaces. All active modules can be replaced

from the front panel.

• 10BASE-T Ethernet interface over which you can control the configuration and operation of the

Cisco uBR 3x10 RF Switch by means of SNMP from a Cisco universal broadband router.

• Upstream and downstream assembly online insertion and removal (OIR) or “hot swapping”

capability.

• CLEI codes for all replaceable modules.

• Rack-mountable—Each unit can be rack-mounted into any rack or cabinet that is designed per

EIA-310 or MIL-STD-189 using the supplied rack-mount brackets.

The Ethernet controller, power supply, upstream modules, and downstream modules are accessed from
the front of the chassis. (See Figure 1-1.)

Figure 1-1 Front View of the Cisco uBR-3x10 RF Switch

Chapter 1 Cisco uBR-3x10 RF Switch Overview

1 Ground lug installation location 5 Downstream switch modules (3)
2 Power supply 6 Mounting brackets
3 Ethernet controller module 7 Upstream switch modules (10)
4 Blank slot

Note Figure 1-1shows the mounting brackets located at the front of the chassis. The brackets can also be

mounted at the rear of the chassis.

The CMTS, PROTECT, and CABLE PLANT MCX connections are accessed from the rear of the
RF switch chassis. (see Figure 1-2.)

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2 3 4

1

Figure 1-2 Rear View of the Cisco uBR-3x10 RF Switch

1 Mounting brackets 3 PROTECT MCX connector location
2 CMTS (working) MCX connector location 4 CABLE PLANT MCX connector location

About the Cisco uBR 3x10 RF Switch

Interface Overview

The following sections describe interface numbering, and MAC address assignments.

Interface Numbering

In all of the Cisco RF switches, the slot number is the chassis slot in which an Ethernet controller or an
upstream switch module or downstream switch module is installed, and the logical interface number is
the physical location of the interface port on an Ethernet controller.

The MAC-layer or hardware address is a standardized data link layer address that is required for certain
network interface types. The Cisco uBR 3x10 RF Switch uses a specific method to assign and control
the MAC-layer addresses of its Ethernet controller.

The Ethernet controller and upstream and downstream module slots keep the same slot number
regardless of whether other Ethernet controllers or upstream or downstream modules are installed or
removed. However, when you move an upstream or downstream module to a different slot, the logical
interface number changes to reflect the new slot number. The Ethernet card is always installed in the
same slot.

For complete descriptions and instructions for the commands used to configure your Cisco RF switch,
refer to the “N+1 Redundancy for the Cisco CMTS” chapter of the Cisco CMTS Feature Guide, which
is available on Cisco.com. (See the “Obtaining Documentation” section on page 11.)

MAC-Layer Address Assignments

All LAN interfaces (ports) require unique MAC-layer addresses, also known as hardware addresses.
Typically, the MAC address of an interface is stored on a memory component that resides directly on the
interface circuitry; however, the online insertion and removal (OIR) feature requires a different method.

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Hardware Component Descriptions

OIR Feature

The OIR feature allows you to remove an Ethernet controller or an upstream or downstream module and
replace it with another identically configured one. If the new controller or module matches the controller
or module you removed, the system immediately brings it online. To allow OIR, an address allocator
with a unique MAC address is stored in an EEPROM on the Cisco RF switch midplane. Each address is
reserved for a specific port and slot in the switch, regardless of whether an Ethernet controller or an
upstream or downstream switch module resides in that slot.

Slot MAC Addresses

The MAC addresses are assigned to the slots in sequence. The first address is assigned to Ethernet
controller slot 0, and the next addresses are assigned to upstream and downstream card slots 1 through
14 (refer to the “Cisco uBR 3x10 RF Switch Slot Information” section on page 6-7 for slot location
information). This address scheme allows you to remove the Ethernet controllers or upstream and
downstream cards and insert them into other switches without causing the MAC addresses to move
around the network or be assigned to multiple devices.

Chapter 1 Cisco uBR-3x10 RF Switch Overview

Hardware Component Descriptions

The following components are included in the Cisco uBR 3x10 RF Switch chassis:

• Power supply module

• Ethernet controller module

• Upstream (low-frequency) switch modules

• Downstream (high-frequency) switch modules

Power Supply Module

• Cisco part number 74-2624-01 (see Figure 1-3 on page 1-5).

The power supply module takes 100 to 240 VAC input and provides +12 VDC output. It also takes

-40.5 to -72 VDC input and supplies +12 VDC output.

A control switch on the front panel is used to select DC input or AC input operation. This a 20-W power
supply.

Caution When inserting or removing the power supply from the Cisco uBR 3x10 RF Switch chassis, you must

use a screwdriver to tighten and loosen the captive installation screws.

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12

3

4

5

6

Figure 1-3 Power Supply Module

Hardware Component Descriptions

1 Strain relief for DC power cables 5 Power select switch (power off, AC, or DC).
2 Captive screws
3 Power LED (green–on)

This is a three way toggle switch, the center
position is off; toggle down for AC, toggle up
for DC.

4 DC power connection 6 AC power input with strain relief retainer clip

Ethernet Controller Module

• Cisco part number 74-2620-01 (see Figure 1-4 on page 1-6).

Within the Cisco uBR 3x10 RF Switch system, only one Ethernet controller is used.

The Ethernet controller module performs two primary functions.

• Connecting the Cisco uBR 3x10 RF Switch to a Cisco uBR10012 router or a Cisco uBR7246VXR

router. You can use a crossover cable to connect the Cisco CMTS to the RF switch Ethernet
controller’s RJ-45 receptacle. Or, you can use a straight-through cable to connect the RF switch and
the CMTS through an ethernet switch or a hub. This connection allows you to remotely control both
automatic and manual operations of the Cisco RF switch by passing SNMP traffic between the
Cisco RF switch and the Cisco CMTS.

For example, when a cable interface line card on the Cisco universal broadband router experiences
a failure or if the Cisco universal broadband router detects a large number of remote customer
premises equipment (CPE) devices that have gone offline, an SNMP alert is automatically
transmitted to the Cisco uBR 3x10 RF Switch and a protecting cable interface line card assumes
working status for the failed or faulty cable interface line card.

• Connecting a console terminal to the Cisco uBR 3x10 RF Switch. You can use a rollover cable to

connect the console terminal to the RF switch Ethernet controller’s EIA/TIA-232 receptacle.This
connection allows you to configure the Cisco uBR 3x10 RF Switch for N+1 redundancy. Use the
configuration commands described in the “N+1 Redundancy for the Cisco CMTS” chapter of the
Cisco CMTS Feature Guide, available on Cisco.com. (See the “Obtaining Documentation” section

on page 11.)

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Hardware Component Descriptions

95645

5

5

3

2

1

4

Figure 1-4 Ethernet Controller PCB Module

1 Transmit (TX) and receive (RX) LEDs 4 Status LEDs (SYS, ERR, ACT, LNK)
2 EAI/TIA–232 connection 5 Captive screws
3 RJ–45 connection

Chapter 1 Cisco uBR-3x10 RF Switch Overview

Table 1-1 describes the Ethernet controller’s LEDs.

Table 1-1 Ethernet Controller LEDs

LED Function

SYS Indicates that the Ethernet controller is enabled for operation in the system. This LED

flashes while the RF switch is booting, and remains on during normal operation.

ERR Indicates that a serious error has occurred either while booting the RF switch, or

during line card operation.

ACT Indicates that there is activity over the 10BASE-T Ethernet RJ-45 interface. This LED

flashes as transmit/receive activity occurs.

LNK Indicates that the Ethernet port has established a valid link with the network.

TX This LED flashes as the Ethernet controller transmits data via the EIA/TIA-232

console port.

RX This LED flashes as the Ethernet controller receives data via the EIA/TIA-232

console port.

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Captive screw Captive screw

Upstream Switch Modules

• Cisco part number 74-2622-01 (See Figure 1-5.)

There are 10 upstream switch modules used in the Cisco uBR 3x10 RF Switch. The module operates
over the from 5 to 70 MHz. Each module has ten 75-ohm inputs accessed through the MCX connectors
on the backpanel of the RF switch (see Figure 1-2 on page 1-3). During normal system operation, all of
the upstream switches direct traffic to their respective default termination interfaces.

Note Upstream cables from the cable interface line cards are plugged into the CMTS MCX connections in the

rear of the Cisco uBR 3x10 RF Switch. See Chapter 4, “Cabling the RF Switch With the Cisco

uBR10012 CMTS Cable Interface Line Cards,” for more information about cabling the RF switch.

The upstream switch module takes the signal inputs (eight) from the power splitter and routes one of the
eight to a protect output, or splits the inputs into two groups of four and sets up the switches to select
one input (of a group of four) as a protect output. The relays are electromechanical, latching relays that
are controlled through an I
connector port to connector port during normal operation and more than 20 dB when operating in protect
mode.

Hardware Component Descriptions

2

C interface. The switch card provides a minimum of 60 dB of isolation from

Figure 1-5 Upstream Switch Card

Each upstream switch has a set of four LEDs that indicate the working status of the port as described in

Table 1-2.

Table 1-2 Upstream Switch Board LED Descriptions

LED Name Color Description

Protect 1 Green/Yellow Indicates CMTS/PROTECT 1

Protect 2 Green/ Yellow Indicates CABLE PLANT/PROTECT 2

Error 1 Off/Yellow Indicates a channel problem 1

Error 2 Off/Yellow Indicates a channel problem 2

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Hardware Component Descriptions

103287

Captive screw Captive screw

Downstream Switch Module

• Cisco part number 74-2623-01 (See Figure 1-6 on page 1-8)

Three downstream (high-frequency) switch modules are used in the Cisco uBR 3x10 RF Switch. The
module operates from 54 to 860 MHz. Each downstream switch module has ten 75-ohm inputs accessed
through the CABLE PLANT MCX connectors on the backpanel of the RF switch. During normal system
operation, the downstream switch module switches all direct traffic to their respective default
termination interfaces.

Note See Chapter 4, “Cabling the RF Switch With the Cisco uBR10012 CMTS Cable Interface Line Cards,”

for more cabling information.

The downstream switch module accepts signal inputs (eight) from the power combiner and combines one
of the eight to a protect output. Alternately, the switch splits the inputs into two groups of four and then
selects one input (in the group of four) to combine with the protect input. The relays are
electromechanical, latching relays that are controlled through an I
a minimum of 60 dB of isolation from connector port to connector port.

Chapter 1 Cisco uBR-3x10 RF Switch Overview

2

C interface. The switch card provides

Figure 1-6 Downstream Switch PCB Assembly

Each downstream switch board contains a set of four LEDs that indicates the working status of the port
as described in Table 1-3 on page 1-8.

Table 1-3 Downstream Switch Board LED Descriptions

LED Name Color Description

Protect 1 Green/Yellow Indicates CMTS/PROTECT 1

Protect 2 Green/ Yellow Indicates CABLE PLANT/PROTECT 2

Error 1 Off/Yellow Indicates a channel problem 1

Error 2 Off/Yellow Indicates a channel problem 2

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Chapter 1 Cisco uBR-3x10 RF Switch Overview

95901

Memory

and

drivers

Switch board

Protect

12

8

out

in in

7

out

in

6

out

in

5

out

in

4

out

in

3

out

in

2

out

in

1

out

Figure 1-7 RF Switch Module Schematic (Upstream and Downstream)

Hardware Component Descriptions

Power Divider Assembly

The power divider assembly contains 16 splitters that operate from 5 to 860 MHz. The board also
contains four protect feed-through connections. The power splitter provides a minimum of 60 dB of
isolation from connector port to connector port.

The power divider assemblies are connected directly to the upstream and downstream card assemblies
through an access area in the midplane card.

Note This assembly is not a field-replaceable unit (FRU).

Midplane Assembly

The midplane assembly is located in the center of the chassis and connects the upstream and downstream
to the power supply and Ethernet card assemblies. This card distributes +12V power, ground, and the I
control signals to the 14 switch card positions available.

Note This assembly is not a field-replaceable unit (FRU).

2

C

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Cable Kits

Cable Kits

Chapter 1 Cisco uBR-3x10 RF Switch Overview

The cables approved for use in the Cisco N+1 redundancy solution, are Mini Precision RG59 (95
percent) tinned copper braid with (100 percent) foil shield. This cable is serial digital interface (SDI)
rated with a 1 MHz to 3 GHz rating.

• CAB-RFSW-3x10-T (bundled cable kit:1.2-m, CMTS to RFS, F to MCX). This kit includes 10

cables, 2 cables have F-connectors on both ends for UPx connections and 2 are single 0.2-m cables,
the others are 1.2-m F-connector to MCX-connector cables.

• CAB-RFSW-3x10-10T (bunbled cable kit:10-m, RFS to HUB, MCX to F). This kit includes 10

cables, 2 single 10-m cables, and 13 extra F-connectors.

• CAB-RFSW5X20TPMF (bundled cable kit, 3-m, MCX to F). This kit includes 2 bundles of 10

cables, 1 bundle of 5 cables, and 25 extra F-connectors.

• CAB-RFS5X20TIMM (bundled cable kit, 1-m, MCX to MCX). This kit includes 2 bundles of 10

cables, 1 bundle of 5 cables, and 4 headers (2 extra to be used with the output cable kit,
CAB-RFSW-3x10-10T.

The different jacket colors are used for easy identification. The gray and brown RF cables are
preterminated with the F-connectors used to connect to the Vecima HD4040 series IF-to-RF upconverter
input.

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Warning

CHAP T ER

2

Preparing for Installation

This chapter describes the site requirements for installing the Cisco uBR 3x10 RF Switch. The chapter
contains the following sections:

• Safety, page 2-2

• Site Requirements, page 2-5

• Provisioning the Headend, page 2-7

• Tools for Installation, page 2-9

• Verifying the Shipping Container Contents, page 2-11

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

Warning

Warning

Warning

This unit is intended for installation in restricted access areas. A restricted access area can be
accessed only through the use of a special tool, lock and key, or other means of security.

Statement 1017

This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260.
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2)
while the housing is open, or both.

Ultimate disposal of this product should be handled according to all national laws and regulations.

Statement 1040

Statement 1043

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Safety

Safety

Chapter 2 Preparing for Installation

The following guidelines will help to ensure your safety and protect the equipment. This list does not
cover all potentially hazardous situations, so be alert.

• The installation of your Cisco uBR 3x10 RF Switch should be in compliance with national and local

electrical codes. In the United States, National Fire Protection Association (NFPA) 70, United States
National Electrical Code. In Canada, Canadian Electrical Code, part I, CC22.1. In other countries,
International Electrotechnical Commission (IEC) 364, part 1 through part 7.

• Review the safety warnings listed in the Cisco RF Switch Regulatory Compliance and Safety

Information document before installing, configuring, or maintaining the Cisco uBR 3x10

RF Switch.

• Never attempt to lift an object that might be too heavy for you to lift by yourself.

• Always turn the power switch to the OFF (O) position and unplug the power cable before opening

the chassis.

• Always unplug the power cable before installing or removing a chassis.

• Keep the chassis area clear and dust free during and after installation.

• Keep tools and chassis components away from walk areas.

• Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught

in the chassis.

Lifting Safely

• The Cisco uBR 3x10 RF Switch operates safely when it is used in accordance with its marked

electrical ratings and product usage instructions.

A fully configured Cisco uBR 3x10 RF Switch weighs approximately 36.6 lb (16.6 kg). This chassis is
not intended to be moved frequently. Before you install the Cisco uBR 3x10 RF Switch, ensure that your
site is properly prepared so that you can avoid having to move a chassis later to accommodate power
sources and network connections.

Whenever you lift a chassis or any heavy object, follow these guidelines (see Figure 2-1):

• Always disconnect all external cables before lifting or moving the chassis.

• Do not attempt to lift the chassis by yourself; have someone assist you.

• Ensure that your footing is solid, and balance the weight of the object between your feet.

• Lift the chassis slowly; never move suddenly or twist your body as you lift.

• Keep your back straight and lift with your legs, not your back. If you must bend down to lift the

chassis, bend at the knees, not at the waist, to reduce the strain on your lower back muscles.

• Lift the chassis from the bottom; grasp the underside of the chassis exterior with both hands.

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Chapter 2 Preparing for Installation

82135

Figure 2-1 Lifting the Chassis

Safety

Safety with Electricity

The Ethernet controller and upstream and downstream switch modules are designed to be removed and
replaced while the system is operating without presenting an electrical hazard or damage to the system.

Caution You must power down the system before removing or replacing the power supply assembly.

Follow these basic guidelines when working with any electrical equipment:

• Before beginning any procedures requiring access to the chassis interior, locate the emergency

power-off switch for the room in which you are working.

• Disconnect all power and external cables before installing or removing a chassis.

• Do not work alone if potentially hazardous conditions exist.

• Never assume that power has been disconnected from a circuit; always check.

• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

• Never install equipment that appears damaged.

• Carefully examine your work area for possible hazards such as moist floors, ungrounded power

extension cables, and missing safety grounds.

Warning

Before working on a chassis or working near power supplies, unplug the power cord on AC units;
disconnect the power at the circuit breaker on DC units.

Statement 12

.

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In addition, use the guidelines that follow when working with any equipment that is disconnected from
a power source, but still connected to telephone wiring or other network cabling:

• Never install telephone wiring during a lightning storm.

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Safety

Chapter 2 Preparing for Installation

• Never install telephone jacks in wet locations unless the jack is specifically designed for wet

locations.

• Never touch uninsulated telephone wires or terminals unless the telephone line has been

disconnected at the network interface.

• Use caution when installing or modifying telephone lines.

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Statement 1001

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent system failures. The Ethernet controller,
power supply, and each upstream and downstream assembly consists of a printed circuit board that is
fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are
integral components of the carrier. Although the carrier helps protect the boards, use an antistatic strap
whenever handling these assemblies. Handle the carriers by the handles and the carrier edges only; never
touch the boards or connector pins.

Caution Always tighten the captive installation screws on the Ethernet controller, power supply, and each

upstream and downstream assembly. These screws prevent accidental removal, provide proper grounding
for the system, and help ensure that the bus connectors are properly seated in the midplane.

Following are guidelines for preventing ESD damage:

• Always use an ESD wrist strap or ankle strap and ensure that it makes good skin contact.

• When handling Ethernet controllers, power supplies, and upstream and downstream assemblies that

have been removed from the Cisco uBR 3x10 RF Switch chassis, make sure that the equipment end
of your ESD strap is attached to an unfinished chassis surface of the router; do not touch the printed
circuit board, and avoid contact between the printed circuit board and your clothing. Always place
the Ethernet controller, power supply, and upstream or downstream assemblies component side up
on an antistatic surface or in a static shielding bag. If you are returning the item to the factory,
immediately place it in a static shielding bag.

• Ensure that the Ethernet assembly is fully inserted in its respective chassis slot and its captive

installation screws are tightened. The captive installation screws prevent accidental removal,
provide proper grounding for the system, and help ensure that the bus connectors are seated in the
midplane.

• Ensure that each downstream and upstream switch assembly is fully inserted in its chassis slot and

that its captive installation screws are tightened.

2-4

• Ensure that the power supply assembly is fully inserted in its chassis slot and that its captive

installation screws are tightened.

Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be

between 1 and 10 megohms (Mohms).

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Chapter 2 Preparing for Installation

Site Requirements

To ensure normal operation and avoid unnecessary maintenance, plan your site configuration and
prepare your site before installation. Take into account the following criteria:

Note To locate the most reliable channels for your downstream and upstream channel plans, we recommend

that you perform a sweep of all available channels for at least a 24 hours to verify the presence or absence
of impulse and ingress noise.

• Select forward and reverse channel frequencies from the range specified in your channel plan.

• Verify that your cable network meets system requirements and Data-over-Cable Service Interface

Specifications (DOCSIS) and/or EuroDOCSIS downstream and upstream specifications.

• Make sure that the site maintains an ambient temperature of 32 to 104°F (0 to 40°C), and keep the

area around the chassis as free from dust as is practical.

AC Power

Site Requirements

Note We recommend an uninterruptable power source to protect against power failures at your site. An

DC Power

Note Each DC-input power supply has an electrical current rating of 0.7A, 20 VA. Use a minimum of 14 AWG

The AC input of the power supply module uses a power factor corrector that allows the Cisco uBR 3x10
RF Switch to operate on input voltage and frequency within the ranges of 100 to 240 VAC and
50 to 60 Hz.

AC-input power supply has an electrical current rating of less than 1 A.

See Appendix A, “Specifications and Component Part Numbers,” for system power specifications,
including input voltage and operating frequency ranges.

The DC input of the power supply module operates at -48 VDC input voltage and supplies +12.0 VDC
power to the Cisco uBR 3x10 RF Switch’s internal components through the midplane.

(2.5 mm
15 A circuit breaker or fuse that is in compliance with your local electric regulations.

See Appendix A, “Specifications and Component Part Numbers,” for system power specifications,
including input voltage and operating frequency ranges.

2

) wire for the input to each DC-input power supply. The power input must be protected by a

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Site Requirements

Site Environment

Table 2-1 lists the operating and nonoperating site temperature requirements. The following ranges are

those within which the Cisco uBR 3x10 RF Switch continues to operate; however, a measurement that
is approaching the minimum or maximum of a range indicates a potential problem. You can maintain
normal operation by anticipating and correcting environmental anomalies before they approach a
maximum operating range.

Table 2-1 Specifications for Operating and Nonoperating Environments

Specification Minimum Maximum

Temperature, ambient operating 32°F (0°C) 104°F (40°C)

Temperature, ambient nonoperating and storage –4°F (–20°C) 149°F (65°C)

Site Configuration: Maintaining Normal Operation

Planning a proper location for the Cisco uBR 3x10 RF Switch and the layout of your equipment rack or
wiring closet is essential for successful system operation. Equipment placed too close together or
inadequately ventilated can cause system overtemperature conditions. In addition, chassis panels made
inaccessible by poor equipment placement can make system maintenance difficult. Following are
precautions that can help avoid problems during installation and ongoing operation.

Chapter 2 Preparing for Installation

General Precautions

Follow these general precautions when planning your equipment locations and connections:

• Use the show environment command regularly to check the internal system status. The

• We recommend keeping the Cisco uBR 3x10 RF Switch off the floor and out of any area that tends

• Follow the ESD prevention procedures in the “Preventing Electrostatic Discharge Damage” section

Power Considerations

Follow these precautions and recommendations when planning power connections to a Cisco uBR 3x10
RF Switch:

• Check the power at your site before installation and periodically after installation to ensure that you

• Install proper grounding to avoid damage from lightning and power surges.

environmental monitor continually checks the interior chassis environment; it provides warnings for
high temperature and maximum and minimum voltages and creates reports on any occurrences. If
warning messages are displayed, take immediate action to identify the cause and correct the
problem.

to collect dust, excessive condensation, or water.

on page 2-4 to avoid damage to equipment. Damage from static discharge can cause immediate or

intermittent equipment failure.

are receiving clean power. Install a power conditioner, if necessary.

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