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

6
Back Panel Connectors
1394 1394
1 2 735 12119 108
T11487
4 6 13
1 Cable In Connects to the coaxial cable that delivers the signal from your cable service
provider
2 Cable Out Connects to a coaxial cable to send analog audio and video signals to a TV or
VCR. These signals are standard-defi nition TV (SDTV) video and stereo audio
3 Audio Out (L/R) Connects to left/right (L/R) audio inputs of TV or A/V receiver
4 Y/V Video Out (HD Component Video Out) Connects to HDTV input of TV (high defi nition). If you
are not using the HDMIm
™
connection, the component video cables (YPbPr) must
be connected here to provide HD signals to your HDTV
Note: Do not use these cables if you are using the HDMI connection
5 Digital Audio Out Connects to the coaxial digital audio input of an A/V receiver
6 Video Out and Connects to a standard TV or VCR with an RCA cable to send analog video and
Audio Out audio signals to a standard TV or VCR. This signal is SDTV
7 S-Video Out Connects an S-Video cable to send an S-Video signal to your TV or VCR. This
signal is standard defi nition but higher quality than other SD connections
8 IR Port Connects to optional VCR Commander™ service
(May not be available on all 4250HD models)
9 HDMI (High-Defi nition Multimedia Interface) Connects to devices that have an HDMI input,
such as a DVD player or a digital television set
10 USB Port Connects to external equipment, such as a keyboard
(May not be available on all 4250 models)
11 1394 Connects to display devices equipped with a 1394 input
(Reserved for future use and may not be available on all 4250HD models)
12 AC Outlet Connects the AC power cord from another device, such as a TV
13 AC Power Input Connects the 4250 to an AC electrical outlet using the cord provided










