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

8
Connections for an HDTV and VCR
To use the 4250HD with an HDTV, you must make one of the following connections to view the HD content.
Refer to your TV and VCR user’s guides and the cabling diagrams in this guide for more detailed connection
information. The following table lists the connections in order of performance, beginning with the connection
that would yield the best overall performance.
Note: The labeling on your 4250HD may vary from the labels shown in the following table.
Required Connections to an HDTV (choose one)
The PrPbY/V connectors can provide high-
defi nition component video signals to an HDTV.
See page 15 for an example.
Note: You can use the HD Setup Wizard on the
4250HD to set the HD mode and select the output
video format (480i, 480p, 720p, 1080i) that will
match the full capabilities of your HDTV.
Some HDTVs have only RGB connectors. If you
have one of these HDTVs, you need an RGB
adaptor. Check with your cable service provider
for information about acquiring an RGB adaptor,
or you can purchase the adaptor at your local
electronics supplier.
Some HDTVs have a High-Defi nition Multimedia
Interface (HDMI) connector. The HDMI connector
provides both a digital video and audio connection.
See page 13 for an example.
The HDMI connector can provide the connection
to an HDTV with a DVI input. If your HDTV has a
Digital Visual Interface (DVI) connector, you will
need an HDMI-to-DVI adaptor. You will also need
to connect a separate audio connection.
See page 14 for an example.
PrPbY/VRGB HDMIDVI
4250HD Connections
HDTV Connections
DVI
Adaptor Needed
AUDIO OUT
L
R
Adaptor Needed
AUDIO IN
L
R
AUDIO OUT
L
R
AUDIO IN
L
R
AUDIO OUT
L
R
HDTV
Pr
Pb
Y
AUDIO IN
L
R
Pr
Pb
Y
HDTV
Pr
Pb
Y
R
G
B
H
V










