Cisco | Explorer 4250HD | Operating instructions | Cisco Explorer 4250HD Operating instructions

United States FCC Compliance
Checking Product Safety
Upon completion of any service or repairs to this product, the service
technician must perform safety checks to determine that this product is
in proper operating condition.
Outdoor Grounding System
If this product connects to an outdoor antenna or cable system, be sure
the antenna or cable system is grounded (earthed). This provides some
protection against voltage surges and built-up static charges.
Article 810 of the National Electric Code (NEC) ANSI/NFPA
No. 70-1990, provides the following information:
• Grounding of the mast and supporting structure
• Grounding the lead-in wire to an antenna discharge unit
• Size of the grounding conductors
• Location of the antenna-discharge unit
• Connection to grounding electrodes
• Requirements for the grounding electrodes (see the following
antenna grounding diagram as recommended by NEC
Note: 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. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment OFF and ON, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
• Consult the cable company or an experienced radio/television
technician for help.
Any changes or modifications not expressly approved by Scientific-Atlanta
could void the user’s authority to operate the equipment.
The information shown in the FCC Declaration of Conformity paragraph
below is a requirement of the FCC and is intended to supply you with
information regarding the FCC approval of this device. The phone number
listed is for
FCC-related questions only and not intended for questions regarding the
connection or operation for this device. Please contact your cable service
provider for any questions you may have regarding the operation or
installation of this device.
FCC Declaration of Conformity
This device complies with Part 15 of FCC Rules. Operation is subject to
the following two conditions: 1) the device may not cause harmful
interference, and 2) the device must accept any interference received,
including interference that may cause undesired operation.
Explorer 4250HD Home Gateway
Model: Explorer 4250HD
Scientific-Atlanta, Inc.
5030 Sugarloaf Parkway
Lawrenceville, Georgia 30044 USA
Telephone: 770-236-1077
For added protection for this product during a lightning storm, or when it
is left unattended and unused for long periods of time, unplug it from the
wall outlet and disconnect the antenna or cable system. This will prevent
damage to the product due to lightning and power-line surges. Plugging
this product into a surge protector may reduce the risk of damage.
Note: Unplugging this product for an extended period of time can result
in loss of authorization. For reauthorization, contact your cable service
Power Lines
WARNING: To avoid electric shock, do not locate an
outside antenna system in the vicinity of overhead power lines or
power circuits.
Do not locate an outside antenna system in the vicinity of overhead
power lines or power circuits. When installing an outside antenna system,
take extreme care to keep from touching power lines or circuits, as
contact might be fatal.
© 2005 by Scientific-Atlanta, Inc. All rights reserved.
Product and service availability subject to change
without notice.
Scientific-Atlanta, Inc., 5030 Sugarloaf Parkway,
P.O. Box 465447, Lawrenceville, GA 30042
September 2005
Printed in the United States of America
4012027 Rev A
Explorer® 4250HD™ Home Gateway Quick Reference
Safety First
Before using the Explorer® 4250HD™ Home Gateway, read the Important
Safety Instructions section of this sheet. Follow the instructions to install
the 4250HD, to become familiar with the buttons on the front panel, and to
access your cable services. Then, enjoy the features of the 4250HD!
Explorer eClub
Get more information about the 4250HD and see additional connection
diagrams on the online Explorer eClub. On the Explorer eClub site you
can get “how to” tips on using the 4250HD, such as setting up your
favorite channels, blocking programs that are inappropriate for children,
and using the remote control to turn on more than one of your electronic
devices. There is also a section with answers to frequently asked questions. To join and access the online Explorer eClub enter the model
number shown on the front panel (4250HD).
Explorer 4250HD Home Gateway Serial Number
If the 4250HD requires troubleshooting in the future, your cable service
provider may ask for the serial number. The serial number is on the back
panel; it begins with “SA” and is located in the lower left corner of the bar
code. Use the space provided here to record the serial number:
4250HD Front Panel
IR Sensor
LED Display
Smart Card Slot
USB Port
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.
Decreases volume
Scrolls through the channels
Increases volume
Accesses your on-screen selection
Receives the infrared signal from the
remote control
Displays the selected channel number, time of day, and the following:
• Power (
• Message (
• Output Resolution (1080i, 720p, 480p, 480i)
• BYPASS - If connected
• AUTO - Automatically outputs native scan rates that your TV can accept
Accesses the on-screen guide, video-on-demand, or pay-per-view
Displays a description of the selected program
Exits menus, on-screen guide, and program information
Displays the Settings Menu
Allows Smart Card access (Reserved for future use or may not be available on all 4250HD models)
Connects to external equipment, such as a keyboard
Canada EMI Regulation
4250HD Back Panel
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la class B est conforme à la norme NMB-003
du Canada.
Software and Firmware Use
Scientific-Atlanta, Inc. owns copyrights to the software described in this
document and furnishes the software to you under a license agreement.
You may only use or copy this software in accordance with the terms of
your license agreement.
Scientific-Atlanta, Inc. owns copyrights to the firmware in this equipment.
You may only use the firmware in the equipment in which it is provided.
Any reproduction or distribution of this firmware, or any portion of it,
without the express written consent of Scientific-Atlanta, Inc. is prohibited.
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. Dolby is a registered trademark of
Dolby Laboratories. HDMI and High-Definition Multimedia Interface are
trademarks or registered trademarks of HDMI Licensing LLC.
IR Port
USB Port
AC Switched
AC Power Input
Scientific-Atlanta, Inc. assumes no responsibility for errors or omissions
that may appear in this guide. Scientific-Atlanta reserves the right to
change this guide at any time without notice.
Connects to cable signal from
the cable service provider
Connects to cable input of a
VCR or standard definition TV
Connects to an optional RF
Bypass module to allow viewing
one channel while recording
another. Contact your cable
service provider for information
Connects to left/right (L/R) audio
inputs of TV or A/V receiver
(HD Component Video Out)
Connects to HDTV input of HDTV. If
you are not using the HDMI connection, connect the component video cables (YPbPr) here to provide HD signals to your HDTV.
Note: Do not use these cables if you are using the HDMI connection.
Connects to the coaxial digital audio input of an A/V receiver
Connects to a standard TV or VCR with an RCA cable to send analog video and audio signals to a standard TV or VCR.
This signal is SDTV and left/right audio
Connects to S-Video input of a standard TV or VCR
Connects to optional VCR Commander™ service (May not be available on all 4250HD models)
Connects to devices that have an HDMI™ input, such as a DVD player or a digital television set
Connects to external equipment, such as a keyboard (May not be available on all 4250HD models)
Connects to display devices equipped with a 1394 input
Connects to the AC power cord from another device, such as a TV
Connects the 4250HD to an AC electrical outlet
Before Installing and Using the 4250HD
Unplug all electronic devices before connecting the set-top.
Connect the set-top to the TV as shown in the diagram.
Connect the set-top to the coaxial cable coming from the wall.
Plug the set-top and the TV into an AC power source. Important: Do not press the Power key on the 4250HD yet.
Turn on the power to your TV, and set the input channel assigned by your cable service provider (channel 3 or 4).
Wait for the time to display on the LED display. Important: It takes 2 to 3 minutes for the set-top to be updated with the latest programming and service
information. When the front panel displays the time, the update is complete.
Connecting the 4250HD to an HDTV With an HDMI Connector
Important Note Regarding the HDMI Interface
Some HDTVs have a High-Definition Multimedia Interface (HDMI) connector.
The HDMI connector provides both a digital video and audio connection.
The HDMI interface will automatically configure 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
configuration instead of Dolby Digital. When the output is configured for
2-channel audio, this configuration is carried over to the other digital audio
outputs of the 4250HD. This configuration 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
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
OUT connectors on the 4250HD.
• 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.
• If you are connecting the HDMI connector to the DVI connector on your
HDTV, you need an HDMI-to-DVI adaptor. You also need a separate audio
connection for the left/right analog ports or the digital audio out,
whichever matches the input formats that your TV accepts.
Read, Retain, and Follow These Instructions
Read all of the instructions before you operate this product. Follow all
operating instructions that accompany this product. Retain the instructions
for future use. Give particular attention to all safety precautions.
Comply With Warnings
Avoid electric shock. Comply with all warnings and cautions in the
operating instructions, as well as those that are affixed to this product.
Grounding This Product (U.S.A. and Canada Only)
WARNING: To avoid electric shock and fire hazard, match
the plug and outlet connections carefully, then fully insert. If the
plug and outlet do not match, or you cannot fully insert the plug,
contact an electrician to update your power outlets.
WARNING: Electric shock hazard! Unplug all electronic
devices before connecting or disconnecting any device cables to
the 4250HD.
Access cable services and programs by pressing the following keys on the
remote control:
• Guide— Access the on-screen guide for schedules of TV programs and
other services available from your cable service provider, such as videoon-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).
• SELECT—View a specific program in the guide.
If the 4250HD does not perform as expected, the following tips may help.
No picture
• Verify that the power to your TV is turned on.
• If the 4250HD is plugged into a wall switch, verify the switch is in the
ON position. (Avoid plugging into a switched outlet.)
• Verify that all cables are properly connected.
• The current channel may not be available in your service package.
Try selecting another channel to see if video is available.
No color
• Verify the current TV program is broadcast in color.
• Adjust the TV color controls.
No sound
• If your setup includes a VCR or stereo, verify that you have properly
connected them to the 4250HD.
• Verify the volume is turned up.
• Verify the mute function is not on.
Automatic Software Updates
The TV screen displays a message that indicates the 4250HD is automatically updating its software.
Wait for the current time to display on the front panel of the 4250HD before
continuing. When the front panel displays the time, the update is complete.
Note: If you need further assistance, contact your cable service provider.
Selecting a Proper Location
Adhere to all warnings on the product and in the operating instructions.
Providing a Power Source
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.
If you are uncertain of the type of power supply to your home or business,
consult your cable service provider or your local power company.
Performance Tips
Images such as letterbox bars or side bars, bright closed-captioning
backgrounds, station logos, or any other stationary images may cause the
HDTV screen to age unevenly and cause damage to your HDTV. Refer to the
user’s guide that came with your HDTV for more information about screen
Heed Warnings
Power Warnings
Access Cable Services and Programs
Avoid Screen Burn-In!
If this product is equipped with either a three-prong (grounding pin) safety
plug or a two-prong (polarized) safety plug, follow these safety guidelines
to properly ground this product:
• For a 3-prong plug (one prong on this plug is a protective grounding
pin), insert the plug into a grounded mains, 3-prong outlet.
Note: This plug fits only one way. If you are unable to insert this plug
fully into the outlet, contact your electrician to replace your obsolete
• For a 2-prong plug (a polarized plug with one wide blade and one
narrow blade), insert the plug into a polarized mains, 2-prong outlet in
which one socket is wider than the other.
Note: If you are unable to insert this plug fully into the outlet, try
reversing the plug. If the plug still fails to fit, contact an electrician
to replace your obsolete outlet.
WARNING: Avoid personal injury and damage to this product!
An unstable surface may cause this product to fall.
Place this product in a location that is close enough to an electrical outlet
and where the power cord is easily accessible to be disconnected from the
wall outlet or from the rear panel of the product.
Important: The power cord is the mains power supply disconnect device.
Place this product on a stable surface. The surface must support the size
and weight of this product.
Cleaning This Product
WARNING: Avoid electric shock! Unplug this product before
Before cleaning this product, unplug it from the electrical outlet. Use a damp
cloth to clean this product. Do not use a liquid cleaner or an aerosol cleaner.
Do not use a magnetic/static cleaning device (dust remover) to clean this
Protecting This Product From Foreign Objects and Water or
Moisture Damage
WARNING: Avoid electric shock and fire hazard! Never push
objects through the openings in this product. Foreign objects can
cause electrical shorts that can result in electric shock or fire. Do not
expose this product to rain or moisture. Do not place objects filled
with liquid, such as vases, on this product.
Never push objects of any kind into this product through openings as they
may touch dangerous voltage points or short out parts that could result in
a fire or electric shock.
Do not expose this product to liquids or moisture. Do not place this product
on a wet surface. Do not spill liquids on or near this product.
Do not use this product near water (such as a bath tub, wash bowl, sink,
or laundry tub), in a wet basement, or near a swimming pool.
Accessories Warnings
WARNING: Avoid electric shock and fire hazard! Do not
overload mains AC outlets and extension cords. For products that
require battery power or other power sources to operate them, refer
to the operating instructions for those products.
Do not overload electrical outlets, extension cords, or integral convenience
receptacles as this can result in a risk of fire or electric shock. For products
that require battery power or other sources to operate, refer to the operating
instructions for that product.
Preventing Power Cord Damage
Arrange all power cords so that people or pets cannot walk on the cords.
Do not place objects on the cords. Do not lean objects against the cords.
Placing objects on or leaning objects against cords can damage the cords.
Give particular attention to cords at the point at which the cord connects
to plugs, at the electrical outlets, and where the cords exit the product.
Usage Warnings
Providing Ventilation
This product has openings for ventilation that protect it from overheating.
To ensure the reliability of this product, do the following:
• Do not block or cover these openings.
• Do not place entertainment devices (such as VCRs or DVDs), lamps,
books, vases with liquids, or other objects on top of this product.
• Do not place this product in any of the following locations:
- On a bed, sofa, rug, or similar surface
- Near heat sources such as radiators, heat registers, stoves, or
other products (including amplifiers) that produce heat
- In an enclosure, such as a bookcase or rack, unless the
installation provides proper ventilation
WARNING: Avoid any potential for electric shock or fire. Do
not use accessories with this product unless recommended by your
cable service provider.
Avoid any potential for electric shock or fire. Do not use accessories with
this product unless recommended by your cable service provider.
Service Warnings
Servicing This Product
WARNING: Avoid electric shock! Opening or removing the
cover may expose you to dangerous voltages. This product contains
no user-serviceable parts. Refer all servicing to qualified service
Do not open the cover of this product. If you open the cover, your warranty
will be void. Refer all servicing to qualified personnel only. Contact your
cable service provider for instructions.
Obtaining Service for Product Damage
For damage that requires service, unplug this product from the AC outlet.
Then, contact your cable service provider or qualified service personnel to
obtain service for the following conditions:
• If there is damage to the power-supply cord or plug
• If liquid enters this product
• If you expose this product to rain or water
• If you drop this product, a heavy object falls on this product, or damage
occurs to the cover of this product
• If this product does not operate normally by following the operating
• If this product exhibits a distinct change in performance
Download PDF