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ScientiÞ c Atlanta, A Cisco Company 770.236.5000
5030 Sugarloaf Parkway www.scientiÞ catlanta.com
Box 465447
Lawrenceville, GA 30042
This document includes various trademarks of ScientiÞ c-Atlanta, Inc. Please see the Trademarks
section of this document for a list of the ScientiÞ c-Atlanta, Inc., trademarks used in this document.
All other trademarks shown are trademarks of their respective owners.
Product and service availability is subject to change without notice.
© 2007 by ScientiÞ c-Atlanta, Inc. All rights reserved.
July 2007 Printed in United States of America 4015278 Rev A
FCC Compliance
Canada EMI Regulation
This Class B digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la class B est conforme à la
norme NMB-003 du Canada.
20060628FDC
Software and Firmware Use
ScientiÞ c-Atlanta, Inc. owns copyrights to the software
included in your set-top and furnishes the software to
your cable service provider under a license agreement.
You may only use or copy this software in accordance
with the terms of your cable service provider.
ScientiÞ c-Atlanta, Inc. owns copyrights to the Þ rmware
in this equipment. You may only use the Þ rmware in the
equipment in which it is provided. Any reproduction or
distribution of this Þ rmware, or any portion of it, without
the express written consent of ScientiÞ c-Atlanta, Inc. is
prohibited.
Trademarks
ScientiÞ c Atlanta, the ScientiÞ c Atlanta logo, and Explorer
are registered trademarks of ScientiÞ c-Atlanta, Inc.
4240C and 4250C are trademarks of ScientiÞ c-Atlanta, Inc.
Cisco, the Cisco logo, and Cisco Systems are
trademarks or registered trademarks of Cisco Systems,
Inc. and/or its afÞ liates in the U.S. and certain other
countries.
CableCARD and M-Card are trademarks of Cable
Television Laboratories, Inc.
Manufactured under license from Dolby Laboratories.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories.
Dolby is a trademark of Dolby Laboratories.
Macrovision is a registered trademark of Macrovision
Corp.
All other trademarks shown are trademarks of their
respective owners.
Disclaimer
ScientiÞ c-Atlanta, Inc. assumes no responsibility for
errors or omissions that may appear in this guide.
ScientiÞ c-Atlanta, Inc. reserves the right to change
this guide at any time without notice.
United States FCC Compliance
This device has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against such interference in a
residential installation. This equipment generates, uses,
and can radiate radio frequency energy. If not installed
and used in accordance with the instructions, it may
cause harmful interference to radio communications.
However, there is no guarantee that interference will
not occur in a particular installation. If this equipment
does cause harmful interference to radio or television
reception, which can be determined by turning the
equipment OFF and ON, the user is encouraged to try
to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna, if applicable.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
• Consult the cable company or an experienced radio/
television technician for help.
Any changes or modiÞ cations not expressly approved by
ScientiÞ c-Atlanta, Inc., could void the user’s authority to
operate the equipment.
The information shown in the FCC Declaration of
Conformity paragraph below is a requirement of the FCC
and is intended to supply you with information regarding
the FCC approval of this device. The phone numbers
listed are for FCC-related questions only and not intended
for questions regarding the connection or operation for
this device. Please contact your cable service provider for
any questions you may have regarding the operation or
installation of this device.
Declaration of Conformity
This device complies with Part 15 of FCC Rules.
Operation is subject to the following two conditions:
1) the device may not cause harmful interference, and
2) the device must accept any interference received,
including interference that may cause undesired
operation.
EXPLORER
Digital Set-top
Model: 4240C and 4250C
Manufactured by: ScientiÞ c-Atlanta, Inc.;
5030 Sugarloaf Parkway;
Lawrenceville, Georgia 30044; USA
Telephone 770-236-1077