Digital Equipment ChannelWorks DECTV-AA Istruzioni per il montaggio

ChannelWorks

Part Number: EK-DECTV-IG. B01

Cable TV Installer’s Guide

Federal Communications Commission (FCC)

Radio Frequency Interference Statement

The following statement applies only to the ChannelWorks bridge:

This equipment generates, uses, and may emit radio frequency energy. The equipment

has been type tested and found to comply with the limits for a Class A digital device

pursuant to Part 15 of FCC rules, which are deigned to provide reasonable protection

against such radio frequency interference.

Any changes or modiﬁcation to this equipment may void the user’s authority to operate

this equipment.

Operation of this equipment in a residential area may cause interference in which case

the user at his own expense will be required to take whatever measures may be required

to correct the interference.

Part Number: EK-DECTV-IG. B01

ChannelWorks

Cable TV Installer’s Guide

February 1994

This manual, in conjunction with the

ChannelWorks Network

Installer’s Guide

and the

ChannelWorks Management

manual,

describes how to install the ChannelWorks bridge. This manual

is intended for the hardware installer and network manager.

Supersession/Update Information: This is a revised manual.

Operating System and Version: LCB Revision 2.0

Management Utilities Version: LCC Revision 2.0

The information in this document is subject to change without notice and should not be construed

as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no

responsibility for any errors that may appear in this document.

Restricted Rights: Use, duplication, or disclosure by the U. S. Government is subject to restric-

tions as set forth in subparagraph (c) (1) (ii) of DFARS 252.227-7013, or in FAR 52.227-19, or in

FAR 52.227-14 Alt. III, as applicable.

Possession, use, or copying of the software described in this publication is authorized only pursu-

ant to a valid written license from Digital or an authorized sublicensor.

No responsibility is assumed for the use or reliability of software on equipment that is not sup-

plied by Digital or its afﬁliated companies.

Digital Equipment Corporation makes no representations that the use of its products in the man-

ner described in this publication will not infringe on existing or future patent rights, nor do the

descriptions contained in this publication imply the granting of licenses to make, use, or sell

equipment or software in accordance with the description.

The following are trademarks of Digital Equipment Corporation: ChannelWorks, Digital, LAT,

The Digital Channel, DECnet, PATHWORKS, POLYCENTER, and the DIGITAL logo.

UniLINK and LANcity are registered trademarks of LANcity Corporation.

IBM, OS/2, and Personal Computer AT are registered trademarks of International Business

Machines Corporation.

Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Cor-

poration.

Procomm is a registered trademark of Datastorm Technologies.

SNMPc is a trademark of Castle Rock Computing.

EK-DECTV-IG. B01

February 1994

EMC Class A Notices

Warning - This is a Class A product. In a domestic environment this product may

cause radio interference in which case the user may be required to take adequate mea-

sures.

Achtung - Diese ist ein Gerat Funkstorgrenzwertklasse A. In Wohnbereichen konnen

bei Betreib dieses Gerates Rundfunkstorungen auftreten, in welchen Fallen der

Benutzer fur entsprechende Gegenmassnahmen verantwortlich ist.

Attention - C’est un produit de Classe A. Dans un environnement domestique, ce pro-

duit risque de creer des interferences radioelectriques, il appartiendra alors a l’utili-

sateur de prendre les mesures speciﬁques appropriees.

Canadian Department of Communications Compliance Statement

The Canadian Department of Communications label identiﬁes certain equipment. This

certiﬁcation means that the equipment meets certain telecommunications network pro-

tective, operational, and safety requirements. The Department does not guarantee that

the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be con-

nected to the facilities of the local telecommunications company. The equipment must

also be installed using an acceptable method of connection. In some cases, the com-

pany’s wiring associated with a single line individual service may be extended by

means of a certiﬁed connector assembly (telephone extension cord). The customer

should be aware that compliance with the above conditions may not prevent degrada-

tion of service in some situations.

Repairs to certiﬁed equipment should be made by an authorized Canadian maintenance

facility designated by the supplier. Any repairs or alterations made by the user to this

equipment, or equipment malfunctions, may give the telecommunications company

cause to request the user to disconnect the equipment.

User’s should ensure for their own protection that the electrical ground connections of

the power utility, telephone lines, and internal metallic water pipe system, if present,

are connected together. This precaution may be particularly important in rural areas.

Caution - Users should not attempt to make such connections themselves, but should contact

the appropriate electrical inspection authority, or electrician, as appropriate.

Acoustics - Declared values per ISO 9296 and ISO 7779

Sound Power Level Sound Pressure Level

LWAd, BL

pAm, dBA

(bystander positions)

Product Idle/Operate Idle/Operate

DECTV-AA 5.0 35

[Current values for speciﬁc conﬁgurations are available from Digital representatives.

1 B = 10 dBA.]

Schallemissionswerte - Werteangaben nach ISO 9296 und ISO 7779/DIN EN27779

Schalleistungspegel Schalldruckpegel

LWAd, BL

pAm, dBA

(Zuschauerpositionen)

Produkt Leerlauf/Betrieb Leerlauf/Betrieb

DECTV-AB 5.0 35

[Aktuelle Werte f|r spezielle Ausr|stungsstufen sind |ber die Digital Equipment Vertre-

tungen erhdltlich. 1 B = 10 dBA.]

Nippon - Japan

vii

Contents

Preface

1 Introduction

Introduction..................................................................................................................................1-1

Installation Tools And Equipment Required ..............................................................................1-2

Tools You Need....................................................................................................................1-2

Installation And Verification Equipment You Need............................................................1-2

Additional Installation Equipment You May Need..............................................................1-3

Physical Description ....................................................................................................................1-3

Input/Output Connections.....................................................................................................1-3

Ethernet Ports ................................................................................................................1-3

Ethernet Port Selection Switch......................................................................................1-5

Cable TV Ports..............................................................................................................1-5

Serial Port......................................................................................................................1-5

The ChannelWorks Bridge Identifying Symbols .................................................................1-6

10BaseT Link Status LED.............................................................................................1-6

Power On LED..............................................................................................................1-6

Ethernet Transmit LED .................................................................................................1-6

Ethernet Receive LED...................................................................................................1-6

Broadband Transmit LED .............................................................................................1-6

Broadband Receive LED...............................................................................................1-6

Status LED.....................................................................................................................1-6

Block Sync LED............................................................................................................1-7

Specifications............................................................................................................................... 1-8

Dimensions And Weight.......................................................................................................1-8

ChannelWorks Bridge...................................................................................................1-8

TransMaster...................................................................................................................1-8

Power Requirements.............................................................................................................1-8

ChannelWorks Bridge...................................................................................................1-8

TransMaster...................................................................................................................1-8

Normal Operating Environment........................................................................................... 1-9

ChannelWorks Bridge...................................................................................................1-9

TransMaster...................................................................................................................1-9

RF Electrical Specifications .................................................................................................1-9

ChannelWorks Bridge...................................................................................................1-9

TransMaster.................................................................................................................1-10

Cable TV Network Requirements..............................................................................................1-10

viii

Contents

2 Cable TV Network Overview

Introduction .................................................................................................................................2-1

Cable TV Network Topologies.................................................................................................... 2-1

Typical Metropolitan Area Network Over Cable TV...........................................................2-1

Single Cable Plants...............................................................................................................2-3

Dual Cable Plants .................................................................................................................2-3

Topologies ............................................................................................................................2-3

3 Preparing The Cable TV Network

Introduction .................................................................................................................................3-1

Setting Up The Headend Translator ............................................................................................ 3-1

Verifying And Setting Up Test Equipment ................................................................................. 3-1

Setting The TransMaster’s Forward And Return Frequencies.............................................3-2

Forward (Output) Channel Frequency Selection...........................................................3-2

Return (Input) Channel Frequency Selection................................................................3-2

Verifying The TransMaster’s Output Signal Level..............................................................3-4

Adjusting The TransMaster Gain .........................................................................................3-4

Cable TV Cable Verification Tests..............................................................................................3-6

Verifying Selected Cable TV Drop’s Center Frequency Receive Level..............................3-7

Verifying The Flatness Of The Cable TV Network At The Selected Drop .........................3-8

Verifying The Cable TV Network’s Return Outlet To Outlet Variation............................3-10

4 Configuring And Installing The ChannelWorks Bridge

Introduction .................................................................................................................................4-1

Installing The LANcity Management Utility On A PC........................................................ 4-2

Setting Up User Accounts ....................................................................................................4-4

User Levels...........................................................................................................................4-6

Level One ......................................................................................................................4-6

Level Two......................................................................................................................4-6

Level Three....................................................................................................................4-6

Level Four ..................................................................................................................... 4-6

Setting Up The ChannelWorks Bridge For Operation.................................................................4-7

Verifying The ChannelWorks Bridge Parameters................................................................4-9

Contents

Modifying The ChannelWorks Bridge Operating Parameters...................................................4-10

Modifying The Bridge Control Group Parameters.............................................................4-10

Modifying The Download Group Parameters ....................................................................4-12

Modifying The Modem Control Group Parameters ...........................................................4-13

Modifying The System Group Parameters......................................................................... 4-14

Modifying The Unique IP Addresses Parameters ..............................................................4-15

Loading Modified Select Parameters Groups.....................................................................4-16

Loading All Parameter Groups...........................................................................................4-17

Starting The ChannelWorks Bridge...........................................................................................4-17

A Appendix

TransMaster Frequency Switch Settings .................................................................................... A-1

Index

Figures

1-1 Input/Output Connections......................................................................................................1-4

1-2 Identifying Symbols ..............................................................................................................1-7

2-1 Typical Metropolitan Area Network Over Cable TV............................................................2-2

3-1 TransMaster, Single Channel, Frequency Agile Translator.................................................. 3-2

3-2 Input Frequency Select Switches Operating Positions..........................................................3-3

3-3 IF Gain And RF Output Controls..........................................................................................3-5

3-4 Cable TV Network Outlet Receive Level Verification......................................................... 3-9

3-5 Measuring The Return Path Loss Outlet To Outlet Variation.............................................3-11

4-1 Directory Location Dialog Box.............................................................................................4-3

4-2 Create Program Group Dialog Box.......................................................................................4-3

4-3 Admin Pull Down Menu........................................................................................................4-5

4-4 Add User Entry Window.......................................................................................................4-5

4-5 ChannelWorks Bridge Power On Diagnostics ...................................................................... 4-8

4-6 Bridge Control Group Window...........................................................................................4-11

4-7 Save Bridge Control Group Window .................................................................................. 4-11

4-8 Download Group Window...................................................................................................4-12

4-9 Modem Control Group Window..........................................................................................4-13

4-10 System Group Window ..................................................................................................... 4-14

4-11 Unique IP Addresses Window...........................................................................................4-15

4-12 Bridge Load Window ........................................................................................................ 4-16

Tables

4-1 The ChannelWorks Bridge Common Parameters ................................................................. 4-9

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