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

13
Connection Diagrams
Connecting the 4250HD to an HDTV With an HDMI Connector
WARNING: Electric
shock hazard! Unplug
all electronic devices
before connecting or
disconnecting any
device cables for the
4250HD.
1394 1394
T11835
4250HD
DVI/HDCP
IN
DVI/HDCP
IN
AUDIO IN
DVI/HDCP
AUDIO IN
DVI/HDCP
LL
RR
HDMIHDMI
Back of HDTV
Cable
Input
Important Note Regarding the HDMI Interface on the 4250HD
The HDMI interface will automatically confi gure the audio output for a format supported by the television.
Because not all TVs support a Dolby
Digital™ input, the HDMI interface may automatically select a 2-channel
stereo audio confi guration instead of Dolby Digital. When the output is confi gured for 2-channel audio, this
confi guration is carried over to the other digital audio outputs of the 4250HD. This confi guration prevents your
home theater system or Dolby Digital decoder from providing the full Dolby Digital surround sound effect.
On the 4250HD, you may override the automatic selection of audio by the HDMI interface by completing the
following steps.
1. Press SETTINGS twice on the remote control to open the General Settings menu.
2. Press MOVE UP or MOVE DOWN to select the option Audio: Digital Out.
3. Press MOVE RIGHT to select Dolby Digital. This setting will send Dolby Digital audio to the HDMI,
DIGITAL AUDIO OUT, and OPTICAL AUDIO OUT connectors on the 4250HD.
Note: If the TV (video/audio monitor) connected to the 4250HD using HDMI is not Dolby Digital capable, it may
not produce audio through its speakers when the Audio: Digital Out setting on the 4250HD is set to Dolby Digital.
You can either switch the Audio: Digital Out setting back to HDMI when you are not using the home theater or
Dolby Digital decoder, or you can connect the baseband audio outputs (OUT 1 Audio Left and Right) to the TV.










