User’s Guide Explorer 4250HD Home Gateway
Notice to Installers The servicing instructions in this notice are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions, unless you are qualified to do so. Note to System Installer For this apparatus, the coaxial cable shield/ screen shall be grounded as close as practical to the point of entry of the cable into the building.
Contents Important Safety Instructions .................................................................................................................................2 Welcome to the Explorer 4250HD .....................................................................................................................4 Safety First..............................................................................................................................................................................
IMPORTANT SAFETY INSTRUCTIONS Read These Instructions Keep These Instructions • Requirements for the grounding electrodes (see the following antenna grounding diagram as recommended by NEC ANSI/NFPA 70) Heed All Warnings Follow All Instructions Power Source Warning A label on this product indicates the correct power source for this product. Operate this product only from an electrical outlet with the voltage and frequency indicated on the product label.
IMPORTANT SAFETY INSTRUCTIONS, continued Prevent Power Cord Damage Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where the cord exits from the apparatus. Provide Ventilation and Select a Location • Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
Welcome to the Explorer 4250HD Follow the instructions in this guide to install the Explorer® 4250HD™ Home Gateway, to become familiar with the buttons on the front panel, and to access your cable services. Then, enjoy the features of the 4250HD. Safety First Before using the 4250HD, read the IMPORTANT SAFETY INSTRUCTIONS section of this guide. For more information about this product, visit our website: www.scientificatlanta.com/products/consumers/new_cableboxes.
Front Panel Features 1 2 3 4 5 6 7 8 9 10 11 12 T11486 1 POWER Provides power to the 4250HD.
Back Panel Connectors 1394 1 2 3 4 5 6 7 8 9 10 1394 11 12 13 T11487 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.
Connecting the 4250HD To connect your 4250HD to your entertainment devices, complete these steps. 1 2 D 3 Determine if your TV is HD or SD and whether it is wide screen (16:9) or standard screen (4:3). See page 20 for more information. 16 4 or 9 3 Make the connections for your TV and VCR as follows: • If you are using an HDTV, see page 8 for a description of the connectors, and see the end of this guide for connection diagrams.
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.
Connections for an HDTV and VCR, continued Optional Connections to a VCR (choose one) 4250HD Connections VCR Connections L For VCRs that have a Video and Left and Right audio connectors, you can use the Out 2 connectors (Video, Left, and Right) on the 4250HD. See page 16 for an example. AUDIO IN R R VIDEO IN VIDEO OUT VCR For VCRs that have an S-Video and Left and Right audio connectors, you can use the S-Video Out and the Out 2 Left and Right connectors on the 4250HD.
Connections for a Standard-Definition TV and VCR To use the 4250HD with an SDTV, you must make one of the following connections to view content. Some SDTVs may not have all these connections. Refer to your TV and VCR user’s guides and the cabling diagrams in this guide for more detailed information. The following table lists the connections in order of performance, beginning with the connection that would yield the best overall performance.
Performance Tips If the 4250HD does not perform as expected, the following tips may help. If you need further assistance, contact your cable service provider. No Picture • Verify that the power to your TV is turned on. • If the 4250HD is plugged into a wall switch, verify the wall switch is in the ON position. Note: You should avoid plugging the 4250HD into an outlet that is controlled by a wall switch. • Verify that all cables are properly connected.
Watching TV Access Services and Programs Access cable services and programs by pressing the following keys on the remote control: • Guide – Access the on-screen guide. The on-screen guide displays schedules of TV programs and other services available from your cable service provider, such as video-on-demand and pay-per-view programs. • Arrows – Highlight a program in the schedule. • Info – Display a specific program description (either from the on-screen guide or while viewing a program).
Connection Diagrams Connecting the 4250HD to an HDTV With an HDMI Connector 4250HD WARNING: Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables for the 4250HD. 1394 Cable Input 1394 Back of HDTV AUDIO IN DVI/HDCP L HDMI R DVI/HDCP IN T11835 Important Note Regarding the HDMI Interface on the 4250HD The HDMI interface will automatically configure the audio output for a format supported by the television.
Connecting the 4250HD to an HDTV With a DVI Connector 4250HD WARNING: Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables for the 4250HD. 1394 1394 Cable Input Back of HDTV AUDIO IN DVI/HDCP L HDMI R DVI/HDCP IN T11837 Note: When connecting the HDMI connector to the DVI connector on your HDTV, you need an HDMI-to-DVI adaptor.
Connecting the 4250HD to an HDTV With Component Input (PrPbY/V) 4250HD WARNING: Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables for the 4250HD.
Connecting the 4250HD to a Home Theater System With Component Input (PrPbY/V) 4250HD WARNING: Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables for the 4250HD.
Connecting the 4250HD to a Stereo VCR, DVD Player, and HDTV (optional) 4250HD WARNING: Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables for the 4250HD.
Connecting the 4250HD in HD Mode to an SDTV With Component Input (PrPbY/V) 4250HD Set to HD Mode WARNING: Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables for the 4250HD. 1394 Cable Input Back of SDTV LEFT OUT IN Pr Pb Note: Note: The 4250HD must be set to the proper output mode, typically 480i.
Frequently Asked Questions About HDTV and Digital TV What is Digital Television? Digital television (DTV) is a huge leap forward in television technology compared to analog television that has been widely available since the 1940s. DTV is delivered and displayed using digital encoding, similar to the way a PC operates. By using digital technology, there is no variation in picture and sound quality from the origination point until it is displayed on your television.
Where Are the Connection Diagrams? The diagrams on pages 13 through 18 of this guide show examples of common ways to connect the 4250HD to your HDTV, DVD, and home theater receiver. However, these diagrams do not show every possible combination of devices. Refer to the user’s guides that came with your other electronic devices for further information. What Cables Do I Need? Some of the cables and adaptors shown in the diagrams may not be included with the 4250HD.
FCC Compliance United States FCC Compliance This device has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against such interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause harmful interference to radio communications.
Scientific Atlanta, A Cisco Company 5030 Sugarloaf Parkway, Box 465447 Lawrenceville, GA 30042 770.236.5000 www.scientificatlanta.com Scientific Atlanta, the Scientific Atlanta logo, and Explorer are registered trademarks of Scientific-Atlanta, Inc. 4250HD and VCR Commander are trademarks of Scientific-Atlanta, Inc. Cisco, the Cisco logo, and Cisco Systems are trademarks or registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries.
