Digital Equipment ChannelWorks DECTV-AA Instrucciones de montaje
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.
© Digital Equipment Corporation 1994. All rights reserved.
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
v
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.
!
vi
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
ix
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
x
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