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

5
Front Panel Features
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1 POWER Provides power to the 4250HD. A light in the LED display illuminates when the
power is on
Note: When not watching TV, turn off the 4250HD to help conserve energy
2 VOL-, VOL+ Decreases and increases volume
3 CH+, CH- Scrolls up and down through the channels
4 SELECT Accesses your on-screen selection
5 IR Sensor Receives the infrared signal from the remote control
6 LED Display Displays the selected channel number and time of day. The LED also displays
the following:
• Message (
)
• HDTV
• Power (
)
• Output Resolution (1080i, 720p, 480p, 480i)
• AUTO - Automatically outputs native scan rates that your TV can accept
7 GUIDE Accesses on-screen services, such as the on-screen guide, video-on-demand,
or pay-per-view
8 INFO Displays a description of the selected program. Available from the on-screen
guide and while viewing a program
9 EXIT Exits menus, on-screen guide, and program information
10 SETTINGS Accesses list of recorded programs displayed on the TV screen
11 Smart Card Slot Allows Smart Card access
(Reserved for future use and may not be available on all 4250HD models)
12 USB Port Connects to external equipment, such as a keyboard
(Reserved for future use and may not be available on all 4250HD models)
Safety Tip: Keep the top of the 4250HD free of all objects and electronic devices, including your TV.










