Scientific Atlanta Power Supply Unit User Manual

Dense QAM Array
Power Supply Unit

Please Read This Entire Guide

Important

Please read this entire guide before you install or operate this product. Give
particular attention to all safety statements.

Dense QAM Array
Power Supply Unit

Notices

Trademark Acknowledgments

· Continuum DVP, “Bringing the Interactive Experience Home”, and SciCare are
trademarks of Scientific-Atlanta, Inc.

· Scientific-Atlanta, the Scientific-Atlanta logo, Continuum, and Mercury are
registered trademarks of Scientific-Atlanta, Inc.

· All other trademarks shown are trademarks of their respective owners.

Publication Disclaimer

Scientific-Atlanta, Inc., assumes no responsibility for errors or omissions that may
appear in this publication. Scientific-Atlanta reserves the right to change this
publication at any time without notice. This document is not to be construed as
conferring by implication, estoppel, or otherwise any license or right under any
copyright or patent, whether or not the use of any information in this document
employs an invention claimed in any existing or later issued patent.

Copyright

©2002 Scientific-Atlanta, Inc. All rights reserved. Printed in Belgium.

Information in this publication is subject to change without notice. No part of this
publication may be reproduced or transmitted in any form, by photocopy, microfilm,
xerography, or any other means, or incorporated into any information retrieval
system, electronic or mechanical, for any purpose, without the express permission of
Scientific-Atlanta, Inc.

Contents

Safety Precautions .....................................................................................................................................iv

Guidelines for Users....................................................................................................................................

Guidelines for Service Personnel..............................................................................................................

v

vi

Warranty and Disclaimer............................................................................................................................ix

Preface

About This Guide............................................................................................................xi

Chapter 1 Introduction

Overview........................................................................................................................1-1

About the Dense QAM Array PSU.............................................................................1-2

Product Identification...................................................................................................1-4

Chapter 2 Installation

Overview........................................................................................................................2-1

Installing the Dense QAM Array PSU .......................................................................2-2

Removing the PSU from the chassis...........................................................................2-5

Chapter 3 Customer Information

Overview........................................................................................................................3-1

Product Support............................................................................................................3-2

Returning Products.......................................................................................................3-4

Appendix A Technical Specifications

Specifications................................................................................................................A-1

Glossary

...................................................................................................................................... Glossary-1

6984278 Rev A iii

Safety Precautions

Read and Retain Instructions

All electrically powered units can be dangerous. We have taken great care to ensure
safety during the design and production of our units. Incorrect installation, handling
or component replacement can, however, impair safety.

Safety guidelines in this manual and labels or instructions on the unit are provided
to warn users and service personnel about residual risk.

Carefully read all safety and operating instructions before operating this product,
and retain them for future reference.

Warning and Caution Icons

WARNING:

Avoid personal injury and product damage! Do not proceed beyond any icon
until you fully understand the indicated conditions.

The following icons alert you to important information about the safe operation of
this product:

You will find this icon in the literature that accompanies this product. This
icon indicates important operating or maintenance instructions.

You may find this icon affixed to this product. This icon indicates a live
terminal; the arrowhead points to the terminal device.

You may find this icon affixed to this product. This icon indicates a
protective earth terminal.

You may find this icon affixed to this product. This icon indicates excessive
or dangerous heat.

Service Personnel, Users and Operators

The terms defined below are used frequently in this manual. The definitions given
are based on definitions in the safety standards in question, but partially simplified
to help the explanation.

The term service personnel applies to trained and qualified individuals who are
allowed to install, replace or service electrical equipment. The service personnel are
expected to use their experience and technical skills to avoid possible injury to
themselves and others due to hazards that exist in service and restricted access areas.

The term user or operator applies to all other persons than service personnel.

iv

6984278 Rev A

Guidelines for Users

Precautions

The following precautions are applicable to users:

To prevent electrical shock or fire hazard:

· Do not remove covers.

· No operator serviceable parts inside.

· Refer servicing to qualified personnel.

· Do not expose this unit to rain or moisture.

· Disconnect the main- and backup-power before changing fuses.

For continued protection against risk of fire:

· Replace only with the same type and rating of fuse.

6984278 Rev A

v

Guidelines for Service Personnel

General

The specific warnings and precautions in the sections below are applicable to service
personnel.

Requirements for the Installation Site

You should select the installation site carefully. Observe the following rules:

· Protective Earth
The protective earth lead of the building installation should comply with the
national and local requirements.

· Environmental Condition
Keep in mind that electronic equipment requires a dry and clean environment
with proper ventilation and cooling facilities. High-humidity conditions can cause
corrosion and degradation of electrical components. At all times the installation
site should be dry, clean and ventilated. Temperature extremes can cause a variety
of problems such as product failure, hardware damage, etc. Ensure that the
product is operated in an environment that meets the requirements as stated in the
unit’s technical specifications.

Electrical Shock Hazard

Electrical shock can cause personal injury or even death. At any time you must avoid
direct contact with dangerous voltages. The protective earth connection is essential
to safe operation and must be verified before connecting the power supply. You
should know the following safety warnings and guidelines:

· Dangerous Voltages

- Product installation or replacement must be performed by service personnel

only.

- Only service personnel are allowed to remove chassis covers and access any of

the components inside the chassis.

- After service, assemble the unit and ensure it is safe to use before you put it back

in operation.

· Earthing

- Do not violate the earth protection by using an extension cable, power cable or

autotransformer without a protective earth conductor.

- Take care to maintain the protective earthing of the unit during service or repair

and to re-establish it before you put it back in operation.

Continued on next page

vi

6984278 Rev A

Guidelines for Service Personnel, Continued

Fire Hazard

Incorrect use or installation of electrical equipment can cause a risk of fire. Be aware
of the following:

· Ventilation
Slots and openings in the product housing are provided for ventilation. Do not
block these openings and slots as insufficient airflow can be unsafe and cause fire.

· Critical Component Replacement
For continued protection against risk of fire; replace critical components only with
components of the same type and rating.

· Fuse Replacement
Replace fuses only with fuses of the same type and rating.

Precautions

Be aware of the following general precautions and guidelines:

· Wristwatch and Jewelry
For your personal safety and to avoid damage of the unit during service and
repair, do not wear electrically conducting objects such as wristwatch or jewelry.

ESD

· Lightning
Do not work on the product, or connect or disconnect cables during periods of
lightning.

· Labels
Do not remove any warning labels. Replace damaged or illegible warning labels
with new ones.

Electrostatic discharge (ESD) results from the static electricity build up on the human
body and other objects. This static discharge can degrade components and cause
failures.

Observe the following rules to reduce ESD effects:

· Do not attempt to open a unit without proper precautions against electrostatic
discharge such as:

- Use a wrist or ankle strap.

- Use an anti-static tablemat when working inside a product.

· Keep components in their anti-static packaging until you install them.

- Avoid touching electronic components when installing e.g. a module.

Continued on next page

6984278 Rev A

vii

Guidelines for Service Personnel, Continued

EMC

To meet the EMC requirements of Directives 89/336/EEC and 93/68/EEC you must
use correctly shielded cables of good quality for all external connections, except the
power, when installing the unit.

Observe the following rules:

· Make sure that all multi-connector cables have conductive connector housings
with shielded clamps. Exceptions from this general rule will be clearly stated in the
connector description for the excepted connector in question.

· Make sure that the coaxial cables are of the double-braided type.

© 2002 Scientific-Atlanta, Inc. All rights reserved.

viii

6984278 Rev A

Warranty and Disclaimer

Statement

Scientific-Atlanta (S-A) warrants good title to any hardware furnished by it. S-A
warrants that during the Warranty Period as defined below services will be
performed in a good and workmanlike manner. S-A also warrants that during the
Warranty Period, each item S-A delivers (other than separately licensed software
and services) (an “Item”) will be free from material defects in workmanship and
materials and under ordinary use, conform in all material respects to its published
specifications current at the time the Item was shipped, downloaded, otherwise
delivered to Customer. During the Warranty Period, S-A will use reasonable
commercial efforts to correct errors detected in licensed software after receiving
notification of such errors from Customer.

Items may include refurbished goods, subassemblies, or components, which S-A
warrants as provided in this section.

Warranty Period

The Warranty Period begins on the date the Item is delivered and extends for 12
months for hardware and 90 days for software, parts, and services. S-A will repair or
replace, at its option, any product that fails to satisfy this Warranty and that is
returned to S-A by Customer at Customer’s expense during the Warranty Period,
unless the failure was the result of shipping; improper installation, maintenance or
use; abnormal conditions of operation; attempted modification or repair by
Customer; or an act of God. S-A will re-perform any services that do not conform to
this Warranty provided S-A has received notice of non-conformance within the
Warranty Period.

Disclaimer

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS, IMPLIED, OR
STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NONINFRINGEMENT. S-A DOES NOT WARRANT THAT
THE FUNCTIONS CONTAINED IN ANY LICENSED SOFTWARE WILL MEET THE
CUSTOMER’S REQUIREMENTS OR THAT THE OPERATION OF THE LICENSED SOFT­WARE WILL BE UNINTERRUPTED OR ERROR-FREE. ANY THIRD-PARTY SOFTWARE
SUPPLIED WITH OR INCORPORATED IN ANY ITEM IS PROVIDED “AS IS,” WITHOUT
WARRANTIES OF ANY KIND. IF A THIRD PARTY SUPPLIES ANY ADDITIONAL
WARRANTIES, SUCH WARRANTIES WILL BE OFFERED DIRECTLY BY SUCH THIRD
PARTY TO CUSTOMER. CUSTOMER'S SOLE REMEDY FOR ANY BREACH OF WAR­RANTY IS THE REPAIR OR REPLACEMENT, AT S-A’S OPTION, OF THE FAILED ITEM.
S-A SPECIFICALLY DISCLAIMS ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED,
TO CUSTOMERS, RESELLERS, DISTRIBUTORS, OR END USERS OF CUSTOMER.

Customer’s Responsibility

Customer must pay packing, crating, and transportation costs to and from the
factory.

At Customer’s request, S-A will make reasonable efforts to provide warranty service
at Customer’s premises, provided Customer pays S-A’s then current rates for field
services and the associated travel and living expenses.

Continued on next page

6984278 Rev A ix

Warranty and Disclaimer, Continued

Customer acknowledges its responsibility to use all reasonable methods to prove out
and thoroughly test the operation of and output from Licensed Software prior to its
use in Customer's operations.

Unless otherwise provided in a separate writing, and subject only to the warranty of
this Section, S-A is under no obligation to provide Customer with any modifications,
updates, additions, or revisions to licensed software, or to maintain licensed
software in any manner.

In the event that any modifications that have not been authorized by S-A are made to
licensed software, any and all warranty and other obligations of S-A shall
immediately cease with respect to such software.

Claims Under This Warranty

In case of a claim under this warranty, Customer should do the following:

1.

Notify S-A by giving the Item model number, serial number, and details of
the difficulty.

2.

On receipt of this information, Customer will be given service data or
shipping instructions.

3. On receipt of shipping instructions, forward the Item prepaid.

4.

If the Item or fault is not covered by warranty, an estimate of charges will be
furnished before work begins.

Limitation of Liability

EXCEPT FOR CLAIMS FOR PERSONAL INJURY CAUSED BY ITEMS FURNISHED BY S-A,
S-A SHALL NOT BE LIABLE TO THE CUSTOMER OR ANY OTHER PERSON OR ENTITY
FOR INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR EXEM­PLARY DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE TRANSACTION
IN WHICH THE ITEMS OR SERVICES WERE FURNISHED OR ANY ACTS OR OMISSIONS
ASSOCIATED THEREWITH OR RELATING TO THE SALE, LICENSE, OR USE OF ANY
ITEMS OR SERVICES FURNISHED, WHETHER SUCH CLAIM IS BASED ON BREACH OF
WARRANTY, CONTRACT, TORT, OR OTHER LEGAL THEORY AND REGARDLESS OF
THE CAUSES OF SUCH LOSS OR DAMAGES OR WHETHER ANY OTHER REMEDY
PROVIDED HEREIN FAILS. IN NO EVENT SHALL S-A’S TOTAL LIABILITY UNDER A
CONTRACT OR PURCHASE ORDER FOR HARDWARE ITEMS OR SERVICES EXCEED
AN AMOUNT EQUAL TO THE TOTAL AMOUNT PAID FOR SUCH ITEMS PROVIDED
UNDER THE CONTRACT OR PURCHASE ORDER. IN NO EVENT SHALL S-A BE LIABLE
TO CUSTOMER FOR ANY DAMAGES RELATED TO LICENSED SOFTWARE IN EXCESS
OF THE LESSER OF TEN THOUSAND UNITED STATES DOLLARS (US$10,000) OR THE
LICENSE FEE PAID BY CUSTOMER TO S-A FOR THE LICENSED SOFTWARE.

x 6984278 Rev A

About This Guide

Introduction

This guide provides the needed technical information to install the Dense QAM
Array Power Supply Unit (PSU).

Audience

The audience of this user manual includes users (operators) and service personnel who
are responsible for the installation, operation and service of the Dense QAM Array
PSU. For further information about the definition of operator and service personnel,
see safety guidelines and precautions earlier in this manual.

Scope

This guide provides the following topics.

· The PSU function description

· The installation procedures

· The technical specifications

Preface

Related Publications

Refer to the following Scientific-Atlanta publications for more information.

· Continuum DVP Dense QAM Array System Guide, part number 698428, or
Mercury Dense QAM Array System Guide, part number 4000997

· Continuum DVP Dense QAM Array Processor Module Installation and Operation
Guide, part number 6984280, or
Mercury Dense QAM Array Processor Module Installation and Operation Guide, part
number 4000996

· Dense QAM Array Dual QAM Card Installation and Operation Guide, Part number
6984279

© 2002 Scientific-Atlanta, Inc. All rights reserved.

6984278 Rev A Preface xi

Overview

Introduction

This chapter provides a description of the Dense QAM Array Power Supply Unit
(PSU) and the product identification.

In This Chapter

This chapter contains the following topics.

About the Dense QAM Array PSU 1-2

Product Identification 1-4

Chapter 1

Introduction

Topic See Page

6984278 Rev A Introduction 1-1

About the Dense QAM Array PSU

General

The Dense QAM Array Power Supply Unit (PSU) is a part of the Continuum DVP™
Dense QAM Array system or of the Mercury™ Dense QAM Array system. This PSU
generates two 12 V DC supply voltages. One 12 V DC voltage (12 VA) supplies Dual
QAM Card 1 up to 4 and the other (12 VB) Dual QAM Card 5 up to 8.

Two PSU versions are available, a 100-240 VAC version and a -48 V DC version.

Drawing

The following illustration shows a 100-240 V AC version PSU.

Continued on next page

1-2 Introduction 6984278 Rev A

About the Dense QAM Array PSU, Continued

Features and Benefits

The standard features and benefits for the 100 - 240 V AC version PSU are:

· Universal AC input

· Inrush current limited, overvoltage protection and thermal shutdown

· Quasi-PFC

· 2 non-isolated fully protected 12 V DC outputs

· High efficiency

· High reliability

Indication LEDs

The PSU is provided with 2 LEDs that indicate the status of the 12 V DC supply
voltages.

12 VA

12 VB

The following table describes the PSU LEDs.

LED Color Description

12 VA Green This led illuminates when the 12 VA is OK.

12 VB Green This led illuminates when the 12 VB is OK.

6984278 Rev A Introduction 1-3

Product Identification

General

Products can be identified by means of the ID label attached to the product.

The following information is available on the label(s).

· Company address

· Model number

· Serial number

· Part number

· Nominal supply voltage

· Maximum current

Under some circumstances you might need this information. For example when a
unit is failing, the serial number is necessary for returning your unit.

Label

The following is an example of the identification label:

Bar co Net n . v .

MODEL: Power Supply Unit
U NOM: 100 - 240 VAC

Luipaardstraat 12 - 8500 Kortrijk

PART NR: V9524805
I MAX : 1,8 A FUSE: T 4A H 250 V

The label is located on the rear side of the PCB.

Note: This identification label is an example and does not contain exactly the same
information as the label attached to your unit.

© 2002 Scientific-Atlanta, Inc. All rights reserved.

EC

SERIAL NR: 5768817

1-4 Introduction 6984278 Rev A

Overview

Introduction

This chapter describes the installation of a Dense QAM Array Power Supply Module
(PSU) in the chassis. It is assumed that all safety precautions and guidelines have
been followed prior to performing the installation procedures in this chapter.

It is recommended that the entire installation procedure in this chapter is read prior
to performing the Dense QAM Array PSU installation.

In This Chapter

This chapter contains the following topics.

Installing the Dense QAM Array PSU 2-2

Chapter 2

Installation

Topic See Page

Removing the PSU from the chassis 2-5

6984278 Rev A Installation 2-1

Installing the Dense QAM Array PSU

Introduction

The PSU is positioned in the right most PCB slot of the Continuum DVP™ Dense
QAM Array Chassis or of the Mercury™ Dense QAM Array Chassis. The following
illustration shows the PSU slot in the chassis.

1 2 3 4 5 6 7 8

PSU Module position

Observe the following cautions when installing the PSU.

CAUTIONS:

During installation, the connector on the PSU must line up evenly with the
connector inside the card slot. When inserting the unit into the module slot,
ensure that the unit is level and the top and the bottom sides slide evenly into
the slot.

PSU contains static-sensitive devices. Always follow proper electrostatic
discharge (ESD) handling procedures (wristband with ground strap and ESD
mat) when installing cards in your chassis. Follow Electronic Industries
Association (EIA) standard EIA-625.

Continued on next page

2-2 Installation 6984278 Rev A

Installing the Dense QAM Array PSU, Continued

To Install the Dense QAM Array PSU

When you have read the safety guidelines and precautions, you are ready to install
the PSU in the Continuum DVP Dense QAM Array Chassis or in the Mercury Dense
QAM Array Chassis.

Perform the following procedure to install the PSU.

1. Unpack the PSU.

CAUTION:

Follow proper ESD handling procedures.
ESD may cause permanent damage to electronic components.

When unpacking a unit, examine it, the accessories, and the packing material
for obvious signs of damage. Check the unit against the delivery/packing
note. Retain the packing material, as it is required for warranty shipments
and for later inspection by the carrier. Should any item be damaged, notify
the carrier and your Scientific-Atlanta representative.

2. Loosen the three screws at the front of the chassis and open the front cover.

3. Slide the card in the card guides of the right-hand slot.

1

2

3

4

5

6

7

8

Continued on next page

6984278 Rev A Installation 2-3

Installing the Dense QAM Array PSU, Continued

4. Push the unit carefully into the back-plane connector.

5. Close the front cover and tighten the three screws.

CAUTION:

The six fans mounted on the front cover of the chassis assure sufficient cooling
of the system only when the hinged front cover is closed. During operation of
the system the front cover should be closed.

Ascertain that the cooling works properly during the operation of the system.

2-4 Installation 6984278 Rev A

Removing the PSU from the chassis

To Remove a Dense QAM Array PSU

When you have read the safety guidelines and precautions, you are ready to remove
the PSU from the Continuum DVP Dense QAM Array Chassis or from the Mercury
Dense QAM Array Chassis.

Perform the following steps to remove the PSU from the chassis:

1. Loosen the three screws at the front of the chassis and open the front cover.

2. Pull out the PSU from the chassis using the handle (bended lip) on the front of
the unit.

0

1

2

3. Close the front cover and tighten the three screws.

CAUTION:

The six fans mounted on the front cover of the chassis assure sufficient cooling
of the system only when the hinged front cover is closed. During operation of
the system the front cover should be closed.

Ascertain that the cooling works properly during the operation of the system.

© 2002 Scientific-Atlanta, Inc. All rights reserved.

3

4

5

6

7

8

Handle

6984278 Rev A Installation 2-5

Overview

Introduction

This chapter contains information on obtaining product support and returning
damaged products.

In This Chapter

This chapter contains the following topics.

Customer Information 3-1

Returning Products 3-4

Chapter 3

Customer Information

Topic See Page

6984278 Rev A Customer Information 3-1

Product Support

Obtaining Support

IF you have… THEN…

general questions about this product Contact your distributor or sales agent

technical questions about this product Contact the customer services

Assistance Centers

Use the following table to find the assistance center in your area.

Region Assistance Centers Telephone, Fax Numbers and E-mail

for product information.

department.

North America
South America
Central America

SciCare™ Broadband
Services – a division of
Scientific-Atlanta
Atlanta, Georgia

· For Technical Support, call:

Toll-free
Local
Fax

United States

· For Customer Service questions, call:

Toll-free
Local
Fax

Europe BarcoNet nv-Belgium

- a Scientific-Atlanta
company

Telephone
Fax

E-mail
Luipaardstraat 12
B-8500 Kortrijk
Belgium

Europe BarcoNet A/S-

Denmark- a Scientific­Atlanta company

Telephone

Fax

E-mail
Tobaksvejen 23A
DK-2860 Søborg
Denmark

1-800-722-2009

770-236-5400
770-236-5748

1-800-722-2009

770-236-6900
770-236-5477

32-(0)56 445 197
32-(0)56 445 053

[e-mail]

45 39 17 00 00
45 39 17 00 10

[e-mail]

Continued on next page

3-2 Customer Information 6984278 Rev A

Product Support, Continued

Asia BarcoNet Sdn. Bhd–

Malaysia- a Scientific­Atlanta company
Lot L1-E-3B Enterprise
4—Technology Park
Malaysia—Lebuhraya
Puchong-Sg. Besi
Bukit Jalil
57000 Kuala Lumpur
Malaysia

Telephone

Fax

E-mail

60 3 8996 1988
60 3 8996 1988

[e-mail]

6984278 Rev A Customer Information 3-3

Returning Products

Introduction

The procedure to return a product depends on the region where you are located. If
you are located in North, South, or Central America, you should follow the
procedure Returning the Product to Scientific-Atlanta - North, South, or Central
America. If you are located in a region outside America, you should follow the
procedure Returning the Product to BarcoNet - Europe or Asia.

Returning the Product to Scientific-Atlanta - North, South, or Central America

Introduction

Returning a product to Scientific-Atlanta for repair includes the following steps:

· Obtaining a return material authorization (RMA) number

· Packing and shipping the product

The following sections describe each of these procedures in detail.

Obtaining an RMA Number

You must have an RMA number to return products.

RMA numbers are valid for 60 days. If you already have a number, but it is older
than 60 days, you must contact a Scientific-Atlanta SciCare Broadband Services
representative to revalidate the number. You can return the product after the RMA
number is revalidated.

Follow these steps to obtain an RMA number.

1. Contact a SciCare Broadband Services representative to request a new RMA
number or revalidate an existing one.

You can either call a representative or fill out and fax an RMA Request form.

IF you want to… THEN…

fax in an RMA Request Form proceed to step 2.

call to request an RMA number proceed to step 4.

2. Fill out the RMA Request Form, and fax it to SciCare Broadband Services at
1-770-236-5477.

Result: A customer service representative writes an RMA number on the
form and faxes the form back to you.

3. Proceed to Packing and Shipping the Product.

Continued on next page

3-4 Customer Information 6984278 Rev A

Returning Products, Continued

4. Telephone SciCare Broadband Services to request an RMA number.

Are you located within the United States?

· If yes, call 1-800-722-2009.

· If no, call 1-770-236-5300

5. Provide the following information to the customer service representative:

· Product model number and/or part number

· Number of products to return

· Symptom(s) you are experiencing with the product

· Your company name, contact, telephone number, fax number, and repair

disposition authority

· Any service contract details

· Purchase order number, if available

Result: The representative issues the RMA number.

Notes: If you cannot provide a purchase order number:

· A proforma invoice listing all costs incurred will be sent to you at the

completion of product repair.

· SciCare must receive a purchase order number within 15 days after you

receive the proforma invoice.

· Products can accrue costs through intentional damage or misuse, or if no

problem is found. If your company requires a purchase order number to
make payment for repairs, products incurring costs will not be dispatched
to you without a valid purchase order number.

6. Proceed to Packing and Shipping the Product.

Continued on next page

6984278 Rev A Customer Information 3-5

Returning Products, Continued

Packing and Shipping the Product

Follow these steps to pack the product and ship it to Scientific-Atlanta.

1. Are the product’s original container and packing material available?

· If yes, pack the product in the container using the packing material.

· If no, pack the product in a sturdy, corrugated box, and cushion it with

packing material.

Important: You are responsible for delivering the returned product to
Scientific-Atlanta safely and undamaged. Shipments damaged due to
improper packaging may be refused and returned to you at your expense.

2. Write the following information on the outside of the container:

· Your name

· Complete address

· Telephone number

· RMA number

Note: Absence of the RMA number may delay processing of your product for
repair. Make sure to include the number in all correspondence to Scientific­Atlanta.

3. Are you shipping the product from a location within the United States?

· If yes, proceed to step 4.

· If no, do the following:

- Consign international shipments to Scientific-Atlanta, Inc., with the

notified party on the Airway Bill stated as “Expediters International for
Customs Clearance”.

- Proceed to step 4.

4. Ship the product prepaid and insured to the following address.

Scientific-Atlanta, Inc.
RMA Number ____________
Factory Services
4245 International Boulevard
Norcross, GA 30093
USA

Important: Be sure to prepay all shipments, as Scientific-Atlanta does not
accept freight collect.

Continued on next page

3-6 Customer Information 6984278 Rev A

Returning Products, Continued

Returning the Product to BarcoNet - Europe or Asia

Use the following procedure to return a unit for repair.

1. Contact the nearest customer services center to obtain a Return Authorization
Number (RAN).

The customer services representative will ask for the unit’s serial number,
which is required to generate the RAN.

2. Ask the customer services representative to which customer center the unit
should be returned.

It may be another than the one you contacted.

3. Package the unit carefully and include any information you can about the
problems you are currently experiencing with the unit.

4. Attach the address label to the shipping carton. Be sure to include the RAN.

5. Ship the unit.

© 2002 Scientific-Atlanta, Inc. All rights reserved.

6984278 Rev A Customer Information 3-7

Appendix

Appendix A—Technical Specifications

Specifications

Introduction

The following tables list the technical specifications of the Dense QAM Array Power
Supply Unit

Note: Technical specifications are subject to change without prior notice.

Environment Specifications

Ambient temperature range:

Appendix A

Technical Specifications

Item Specification

· Within specs

· Operation

· Storage

Physical Specifications

Dimension

· In mm

· In inch

Weight 1.3 kg / 2.86 lbs

10 to 40°C /50 to 104°F

0 to 50°C /32 to 122°F

-20 to 70°C /-4 to 158°F

Item Specification

55 W x 100 H x 385 D

2.2 W x 3.9 H x 15.2 D

Continued on next page

6984278 Rev A Technical Specifications A-1

Specifications, Continued

Electrical Specifications

Input voltage range 100 - 120 / 200 - 240 V AC

Output Two non-isolated outputs 12 V DC

Item Specification

Output voltage: 12.25 ±

0.25 V (± 2%)

No adjustments necessary.

Maximum Spec. SMPS (with forced air­cooling)

Maximum Load in application 5.2 A (120 W output power)

Nominal load in application 4.2 A (96 W output power)

Minimal load 0.25 A (to start up the SMPS)

Output current limit for each 12 V
output

No derating over entire temperature
range

Efficiency 83%

Switching frequency ± 66 kHz (Forward converter)

No load input power Max. 5 W

Inrush current limitation with NTC
resistance

Fuse 4 A T (internal fuse size 5 x 20 mm)

© 2002 Scientific-Atlanta, Inc. All rights reserved.

6.25 A on each output (150 W output
power)

6.7 A (short circuit proof)

Nominal load from 0°C (32°F) up to
45°C (113°F)

110 V: max. 50 A @ peak line
220 V: max. 100 A @ peak line

A-2 Technical Specifications 6984278 Rev A

Glossary

Term, Acronym,

Meaning

Abbreviation

DVP Digital Video Platform

EIA Electronic Industries Association

EMC ElectroMagnetic Compatibility

ESD Electrostatic Discharge

LED Light Emitting Diode

PCB Printed Circuit Board

PSU Power Supply Unit

QAM Quadrature Amplitude Modulation

RAN Return Authorization Number

RMA Return Material Authorization

SMPS Switched Mode Power Supply

© 2002 Scientific-Atlanta, Inc. All rights reserved.

6984278 Rev A Glossary-1

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Part Number 6984278

DOCUMENT

Rev A Printed in Belgium July 2002

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