User`s guide
Table Of Contents
- Explorer 4250HD Home Gateway
- Notice to Installers
- U.S. Patents
- Contents
- Important Safety Instructions
- Welcome to the Explorer 4250HD
- Safety First
- Explorer 4250HD Home Gateway Serial Number
- Front Panel Features
- Back Panel Connectors
- Connecting the 4250HD
- Connections for an HDTV and VCR
- Connections for an SDTV and VCR
- Performance Tips
- Automatic Software Updates
- Watching TV
- Connection Diagrams
- Frequently Asked Questions about HDTV and Digital TV
- Picture Formats
- FCC Compliance
- Macrovision Copyright Notice
- Software and Firmware Use
- Disclaimer
- Back Page

Scientifi c Atlanta, the Scientifi c Atlanta logo, and Explorer are registered trademarks of Scientifi c-Atlanta, Inc.
4250HD and VCR Commander are trademarks of Scientifi c-Atlanta, Inc.
Cisco, the Cisco logo, and Cisco Systems are trademarks or registered trademarks of Cisco Systems, Inc. and/or its affi liates in the U.S. and certain other countries.
“Dolby” is a trademark of Dolby Laboratories.
HDMI, the HDMI logo, and High-Defi nition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.
Macrovision is a registered trademark of Macrovision Corp.
All other trademarks shown are trademarks of their respective owners.
Product and service availability is subject to change without notice.
© 2007 Scientifi c-Atlanta, Inc. All rights reserved.
November 2007 Printed in United States of America 4004759 Rev B
Scientifi c Atlanta, A Cisco Company
5030 Sugarloaf Parkway,
Box 465447
Lawrenceville, GA 30042
770.236.5000
www.scientifi catlanta.com










