®
Explorer Digital Set-Top
User’s Guide
TM
TM
Models 4240HDC and 4250HDC
TM
with Multi-Stream CableCARD Interface
EXPLORER 4250HDC
+
CH
CH
SELECT
GUIDE
-
+
VOL
VOL
INFO
EXIT
POWER
SETTINGS
-
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Contents
Important Safety Instructions................................................................................iv
Welcome............................................................................................................... 1
Safety First ........................................................................................................... 1
For More Information............................................................................................ 1
Identify Your 4240HDC or 4250HDC.................................................................... 1
What’s in the Carton?........................................................................................... 2
Additional Equipment You Might Need................................................................. 2
What’s on the Front Panel?.................................................................................. 3
What’s on the Back Panel? .................................................................................. 4
Connecting the Set-top......................................................................................... 5
Connections for an HDTV and VCR..................................................................... 6
Connections for a Standard-DeÞnition TV and VCR ............................................ 7
View Television Programming .............................................................................. 8
Performance Tips ................................................................................................. 9
Frequently Asked Questions............................................................................... 10
Picture Formats ...................................................................................................11
Connecting to an HDTV with an HDMI Connector ............................................. 12
Connecting to an HDTV with a DVI Connector................................................... 13
Connecting to an HDTV with Component Input (PrPbY).................................... 14
Connecting to a Home Theater System with Component Input (PrPbY)............ 15
Connecting to a Stereo VCR and HDTV (optional) ............................................ 16
Connecting to an HDTV with a 1394 Connector................................................. 17
Connecting the Set-top in HD Mode to an SDTV with
Component Input (PrPbY).................................................................................. 17
Index................................................................................................................... 18
Compliance Information........................................................................Back Cover
iii
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IMPORTANT SAFETY INSTRUCTIONS
• Location of the antenna-discharge unit
Read These Instructions
Keep These Instructions
Heed All Warnings
• Connection to grounding electrodes
• Requirements for the grounding electrodes
(see the following antenna grounding diagram
as recommended by NEC ANSI/NFPA 70)
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. If you are uncertain of the type of power
supply to your home or business, consult your
service provider or your local power company.
Ground the Product
WARNING:
Avoid electric shock and Þre hazard! Do
not locate an outside antenna system in
the vicinity of overhead power lines or
power circuits. Touching power lines or
circuits might be fatal.
WARNING:
Avoid electric shock and Þre hazard!
Do not defeat the safety purpose of
the polarized or grounding-type plug.
A polarized plug has two blades with
one wider than the other. A grounding-
type plug has two blades and a third
grounding prong. The wide blade or the
third prong is provided for your safety.
If the provided plug does not Þt into
your outlet, consult an electrician for
replacement of the obsolete outlet.
Protect the Product from Lightning
For added protection, unplug this apparatus
during lightning storms or when unused for long
periods of time. In addition to disconnecting the
AC power from the wall outlet, disconnect the
signal inputs.
If this product connects to coaxial cable wiring,
be sure the cable system is grounded (earthed).
Grounding provides some protection against
voltage surges and built-up static charges.
Verify the Power Source from the
On/Off Power Light
When the on/off power light is not illuminated,
the apparatus may still be connected to the
power source. The light goes out when the
apparatus is turned off, regardless of whether
it is still plugged into an AC power source.
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.
Eliminate AC Mains Overloads
Article 810 of the National Electric Code (NEC)
ANSI/NFPA No. 70-1990, provides the following
information:
WARNING:
Avoid electric shock and Þre hazard!
Do not overload AC mains, outlets,
extension cords, or integral convenience
receptacles. For products that require
battery power or other power sources
to operate them, refer to the operating
instructions for those products.
• Grounding of the mast and supporting
structure
• Grounding the lead-in wire to an antenna
discharge unit
• Size of the grounding conductors
iv
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IMPORTANT SAFETY INSTRUCTIONS, continued
Prevent Power Cord Damage
Accessories Warning
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.
WARNING:
Avoid electric shock and Þre hazard!
Only use attachments/accessories
speciÞed by your service provider or
the manufacturer.
Provide Ventilation and Select a
Location
• Do not block any ventilation openings. Install
in accordance with the manufacturer’s
instructions.
Service Warnings
• Do not place this apparatus on a bed, sofa,
rug, or similar surface.
WARNING:
Avoid electric shock! Do not open
the cover of this product. Opening or
removing the cover may expose you
to dangerous voltages. If you open the
cover, your warranty will be void. This
product contains no user-serviceable
parts. Refer all servicing to qualiÞed
service personnel.
• Do not place this apparatus on an unstable
surface.
• Do not install near any heat sources such
as radiators, heat registers, stoves, or other
apparatus (including ampliÞers) that produce
heat.
• Do not install this apparatus in an enclosure,
such as a bookcase or rack, unless the
installation provides proper ventilation.
Servicing is required when the apparatus has
been damaged in any way, such as a power-
supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or
moisture, does not operate normally, or has
been dropped.
• Do not place entertainment devices (such as
VCRs or DVDs), lamps, books, vases with
liquids, or other objects on top of this product.
Protect from Exposure to Moisture
and Foreign Objects
Do not use this apparatus near water.
Check 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.
WARNING:
Avoid electric shock and Þre hazard! Do
not expose this product to liquids, rain,
or moisture.
Protect the Product when Moving It
Always disconnect the power source when
moving the apparatus or connecting or
disconnecting cables.
WARNING:
Avoid electric shock and Þre hazard!
Unplug this product before cleaning.
Clean only with a dry cloth. Do not use
a liquid cleaner or an aerosol cleaner.
Do not use a magnetic/static cleaning
device (dust remover) to clean this
product.
WARNING:
Avoid personal injury and
damage to this product! Use
only with the cart, stand, tripod,
bracket, or table speciÞed by the
manufacturer or sold with the apparatus.
When a cart is used, use caution when
moving the cart/ apparatus combination to
avoid injury from tip-over.
WARNING:
Avoid electric shock and Þre hazard!
Never push objects through the
openings in this product. Foreign
objects can cause electrical shorts that
can result in electric shock or Þre.
20070320 Set-Top Cable US & Canada
v
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Welcome
The Explorer 4240HDCTM and 4250HDCTM Digital Interactive Set-Tops with a Multi-Stream
®
CableCARDTM (M-CardTM) provide high-deÞnition (HD) capability and broadband digital video
services.
Follow the instructions in this guide to install the 4240HDC or 4250HDC, to become familiar with
the buttons on the front panel, and to access your cable services. Then, enjoy the features of the
4240HDC or 4250HDC and change the way you watch TV!
Safety First
Before using the set-top, read the Important Safety Instructions section of this guide.
For More Information
The consumer support website provides news and information about this product. For more
information, please refer to the following Web address:
Identify Your 4240HDC or 4250HDC
To Þnd the serial number for your 4240HDC or 4250HDC, look on the back for a label that is similar
to the example shown here. The serial number begins with “STB SN“ and is located beneath the
bar code.
STB SN: SABNFSRVG
eCM MAC: 001868C16907
STB RF MAC: 001868C16906
Serial Number
T13039
If your 4240HDC or 4250HDC requires troubleshooting in the future, your service provider may ask
for this serial number.
Use the space provided here to record the serial number:
____________________________________________
1
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What’s In The Carton?
The set-top carton contains the following items:
EXPLORER 4250HDC
+
CH
SELECT
-
+
VOL
GUIDE
VOL
INFO
EXIT
POWER
SETTINGS
-
CH
•
4240HDC or 4250HDC Set-top
•
Connection Guide
•
Power Cord
•
Audio Left/Right Cable
•
Component Video Cables (PrPbY)
Additional Equipment You Might Need
You might need some of the cables and adapters shown below for connecting the set-top to your
home entertainment devices. See the connection information beginning on page 12 for more
information.
Check with your service provider for information about acquiring cables or adapters, or you can
purchase cables or adapters at your local electronics supplier.
Multi-Stream
CableCARD
(obtain from your
service provider)
HDMI
Adapter
Composite
A/V Cables
RGB
Adapter
RGB Adapter
Cable
(RCA to RCA)
S-Video
Cable
RGB Adapter
Cable
(RCA to VGA)
RGB Adapter
Cable
(RCA to BNC)
HDMI-to-HDMI
Cable
Optical Digital
Audio Cable
IEEE 1394
6-Pin
to 4-Pin
Cable
HDMI-to-DVI
Cable
IR Extender
Cable
Coaxial Digital
Audio Cable
RF Coaxial
Cable
2
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What’s on the Front Panel?
EXPLORER 4250HDC
+
CH
SELECT
GUIDE
-
+
VOL
VOL
INFO
EXIT
POWER
SETTINGS
-
CH
1
2
3
4
5
6
7 8 9 10
11
12
T12966
1 Power
Turns the set-top on and off
Increases and decreases the volume
2 VOL +, VOL -
3 CH+, CH -
4 Select
Scrolls up and down through the channels
Provides access to your on-screen selection
5 IR Sensor
6 LED Display
Receives the infrared signal from the remote control
Displays the selected channel number and time of day. The LED also
displays the following:
• Message (
)
• HDTV
• Power (
)
• Output Resolution (1080i, 720p, 480p, or 480i)
• AUTO (Automatically outputs native scan rates that your TV can accept)
7 Guide
8 Info
Accesses on-screen services, such as the on-screen guide, video-on-
demand, or pay-per-view
Displays a description of the selected program. This button is available
from the on-screen guide and while viewing a program
9 Exit
Exits menus, the on-screen guide, and program information
Provides access to the Settings menu
Reserved for future use
10 Settings
11 Smart Card Slot
12 USB Port
Connects to external equipment, such as a keyboard or mouse
(reserved for future use)
Note: This illustration may vary from the actual product.
3
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What’s on the Back Panel?
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C16907
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C16906
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
Y
A
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
120 VAC
60HZ 400W
120 VAC
60HZ 40W
HDTV
DIGITAL
AUDIO OUT
VIDEO
OUT
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
T12967
1
2
3
4
5 6 7
9
10 12 13
11
14 15
8
1 Cable In
Connects to a coaxial cable that delivers the signal from your service
provider
2 Cable Out
Connects to a coaxial cable that sends analog audio and video signals to
a TV or VCR. These signals are standard-deÞnition TV (SDTV) video and
stereo audio
3 HDTV
Connects to the component video input (YPbPr) on the HDTV, when in HD
mode
4 Digital Audio Out
5 Out 2 (Secondary
Connects to an RCA cable that sends a digital audio signal to a surround-
sound receiver or other digital audio device
Connects to either a VCR or to another set of inputs (composite) on
Video/ Audio Out) your TV
6 Audio Out
(Left, Right)
Connects to RCA cables that send analog audio signals (left and right) to
the stereo inputs on a TV
7 S-Video Out
Connects to an S-Video cable that sends an S-Video signal to your TV or
VCR. This signal is standard deÞnition, but higher quality than other SDTV
connections
8 IR
This connector reserved for future use
9 Optical Audio
Output
Connects to an optical cable that sends a digital audio signal to a surround-
sound receiver or other digital audio device
10 HDMI
Connects an HDMITM cable to the HDMI input of an HDTV. HDMI supports
both digital audio and video. May be used to connect to a DVI interface
using an HDMI-to-DVI adaptor for video and separate audio connections.
Any of the following audio connections may be used: Digital Audio Out (4);
Audio Out: Left, Right (6); or Optical Audio Output (9)
11 Multi-Stream
CableCARD
Slot for Multi-Stream CableCARD (M-Card) module, which decrypts
subscription digital channels. This set-top will not operate correctly without
an M-Card module. Obtain an M-Card module from your service provider
12 USB
Connects to external USB devices such as a keyboard or a mouse
Connects to display devices that are equipped with a 1394 input
Connects to the AC power cord from another device, such as a TV
Connects to the power cord to deliver power to the set-top
13 1394
14 AC Outlet
15 AC Power Input
Note: This illustration may vary from the actual product.
4
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Connecting the Set-top
To connect your set-top to your entertainment devices, complete these steps.
Determine if your
TV is HD or SD and
whether it is wide
screen (16:9) or
16
4
or
3
9
standard screen
(4:3). See page 11
for more information.
1
2
Make the connections for your TV and/or VCR as follows:
• If you are using an HDTV, see page 6 and the connection diagrams at the end
of this guide.
• If you are using an SDTV, see page 7 and the connection diagrams at the end
of this guide.
• If you want to archive some programs to VCR tape, see pages 6 and 7 and the
connection diagrams at the end of this guide.
Identify the additional
devices you will connect
VCR
DVD
D-VCR
Other
to the set-top and TV.
See pages 12 through
17 and the related user
guides for your devices
for more information.
!
Home Theater
3
Plug the set-top and the TV into an AC power source that is not controlled by a
switch.
To provide some protection against voltage surges and built-up static charges
that can be caused by lightning storms and power outages, ground (earth) your
electronic devices, such as by plugging the set-top into a surge protector.
4
Do not turn on the set-top or TV yet.
POWER
5
It may take several minutes for the set-top to receive the latest software,
programming, and service information. Wait until you see one of the following
displays on the front panel of the set-top that indicates that the update is complete:
• Current time
• Four dashes (- - - -)
Note: If four dashes are displayed, you must call your service provider to get the set-
top authorized.
6
7
Set up your set-top for HDTV or SDTV by completing the following steps:
• Make sure the set-top is Off and the TV is On.
• On the front panel of the set-top, press GUIDE and INFO at the same time.
• Follow the on-screen instructions to choose HD or SD mode and wide screen
(16:9) or standard screen (4:3) depending upon your TV type. See page 11 for
more information on the scan rate.
• At the conclusion of the on-screen instructions, press POWER on the set-top to
begin watching TV.
5
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Connections for an HDTV and VCR
To use the set-top with an HDTV, you must make one of the following connections to view the HD
content. In addition, you can make connections to a digital or analog VCR to record to a VCR tape.
Refer to your TV and VCR user’s guides and the cabling diagrams in this guide for more detailed
connection information.
Note: The labeling on your set-top may vary slightly.
Set-top
Connections
HDTV
Connections
Required Connections to an HDTV (use one)
Some HDTVs have a High-DeÞnition Multimedia
Interface (HDMI) connector. The HDMI connector
provides both a digital video and audio connection. See
the connection diagram on page 12 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
adapter, and you will need to connect a separate audio
connection.
OUT 1
DVI
L
R
L
R
See the connection diagram on page 13 for an example.
Adapter Needed
The PrPbY connectors can provide high-deÞnition
component video signals to an HDTV.
OUT 1
Pr
Pb
Y
Y
Pb
Pr
Note: Use the HD Setup Wizard on the set-top to set
the HD mode and select the output video format that will
matches the full capabilities of your HDTV.
L
R
L
R
See the connection diagram on page 14 for an example.
Some HDTVs have only RGB connectors. If you have
one of these HDTVs, you need an RGB adapter, and
you will need to connect a separate audio connection.
OUT 1
Pr
Pb
Y
R
G
B
H
V
L
Check with your service provider for information about
acquiring an RGB adapter, or you can purchase the
adapter at your local electronics supplier.
R
L
R
R
RGB Adapter
Needed
Some HDTVs have 1394 connectors. If you connect to
your HDTV using a 1394 connection, you also need to
connect separate video and audio connections to your
HDTV.
OUT 1
Pr
1394
1394
Y
Pb
Y
Pb
L
L
Pr
R
See the connection diagram on page 17 for an example.
Set-top
Connections
VCR
Connections
Optional Connections to a VCR (use one)
OUT 2
A
For VCRs with Video and Left and Right audio
connectors, you can use the Out 2 connectors
(Video, Left, and Right) on the set-top.
L
R
U
L
D
I
VIDEO
IN
AUDIO
IN
R
O
See the connection diagram on page 16 for an
example.
VIDEO
OUT 2
For VCRs with 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 set-top.
L
R
L
S-VIDEO
OUT
S-VIDEO
IN
R
1394
For Digital VCRs, you can use the 1394 out connector
on the set-top.
1394
6
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Connections for a Standard-DeÞnition TV and VCR
When using the set-top with an SDTV, you must make one of the following connections to view
content. Some SDTVs may not have all these connections. In addition, you can make connections
to a VCR to record to a VCR tape. Refer to your TV and VCR user’s guides and the cabling
diagrams in this guide for more detailed information.
Note: The labeling on your set-top may vary slightly.
Set-top
Connections
SDTV
Connections
Required Connections to an SDTV (use one)
The PrPbY connectors can provide standard-deÞnition
component video signals to an SDTV.
Pr
Pb
Y
Y
Pb
Pr
Note: To connect PrPbY to an SDTV, you must set
the HD Setup Wizard on the set-top to HD Mode, and
select the output video format (typically 480i) that will
match the capabilities of your SDTV.
OUT 1
L
R
L
R
The S-Video Out connection provides an optimal video
connection to SDTVs.
S-VIDEO
OUT
S-VIDEO
IN
OUT 1
L
R
L
R
The Cable Out connector provides a video and audio
connection to an SDTV.
CABLE
OUT
CABLE IN/
ANT IN
Set-top
Connections
VCR
Connections
Optional Connection to a VCR
For VCRs with Video and Left and Right Audio
connectors, you can use the Out 2 connectors (Video,
Left, and Right) on the set-top.
OUT 2
A
VIDEO
IN
U
L
D
I
L
R
R
O
VIDEO
AUDIO
IN
7
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View Television Programming
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–Select a program in the schedule.
Info–Display a speciÞc program description (either from the on-screen guide or while viewing a
program).
•
Select–View a speciÞc program in the guide.
Stretch and Zoom Program
You can stretch and zoom SD or HD programs by pressing the # key on the remote control.
Avoid Screen Burn-In!
Images such as letterbox bars or side bars, bright closed-captioning backgrounds, station logos, or
any other stationary images may cause the screen in your HDTV to age unevenly; this is known as
screen burn-in. Refer to the user’s guide that came with your HDTV for more information.
WARNING:
Avoid screen burn-in!
Do not display the same Þxed images on your HDTV screen for extended periods of time.
8
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Performance Tips
If the set-top does not perform as expected, the following tips may help. If you need further
assistance, contact your service provider.
No Picture
•
•
•
•
•
•
Verify that the power to your TV is turned on.
Verify that your HDTV is in HD mode. If necessary, run the HD Setup Wizard to select HD mode.
If the set-top is plugged into a wall switch, verify that the switch is in the ON position.
Verify that all cables are properly connected.
Verify that the M-Card module is installed.
If your system includes a VCR or stereo, verify that you have properly connected them to the
set-top
•
Verify that the set-top is set to the proper screen type and resolution.
No Color
•
•
•
Verify that the current TV program is broadcast in color.
Adjust the TV color controls.
If you are using a component video connection (PrPbY), check that all connectors are
completely plugged into the set-top and TV.
No Sound
•
If your setup includes a VCR or stereo, verify that you have properly connected them to the set-
top.
•
•
Verify that the volume is turned up (analog audio only).
Verify that the mute function is not on (analog audio only).
Automatic Software Updates
A message appears on the TV screen when the set-top and the M-Card module are receiving
software updates. In addition, download information also appears on the front panel of the set-top
during these updates. Wait for the current time to display on the front panel before continuing.
When the time appears, the update is complete.
9
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Frequently Asked Questions
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. You
always receive a high-quality picture without the wavy lines or static you might sometimes get from
a weak analog signal.
Because DTV receives and displays digital images that contain many times more picture elements
(pixels - the small dots that make up the color image on your screen) than standard analog
television, you can get a sharper on-screen image than with analog. Additionally, DTV supports
CD-quality sound. DTV includes SDTV (Standard DeÞnition Television), EDTV (Enhanced DeÞnition
Television), and HDTV (High-DeÞnition Television). That means that all HDTV is digital, but not all
digital TV is high-deÞnition. A high-deÞnition program must originate in HD format and be broadcast
in HD format. Having an HDTV system does not mean that everything you watch will be in high-
deÞnition. Getting the signal from digital cable also does not mean it is high-deÞnition.
What is Standard-DeÞnition Television?
Standard-deÞnition television (SDTV) is basic digital television programming delivered by cable.
Typically, the SDTV screen is the same, nearly square shape as an analog television screen. Digital
images on an SDTV set are crisp and clear—noticeably better than on a standard analog television
set using an antenna to receive over-the-air signals.
What is High-DeÞnition Television?
High-deÞnition television (HDTV) is a completely new way to send and receive television broadcast
signals. HDTV images are made up of pixels that are much smaller and closer together than those
used in standard analog television, and there are millions of them. Thus, HDTV can display Þve
to six times the detail of analog television to deliver picture quality that is much more realistic,
dimensional, and precise. SDTV programs can be viewed on an HDTV. Another feature of HDTV
is digital surround sound using Dolby® Digital, which is the same technology used to produce the
sound you hear in movie theaters.
Are Local TV Stations Broadcasting in HDTV?
Many local TV stations are transmitting digital signals. However, transmitting a digital signal does not
mean transmitting an HDTV signal. Some stations are using the new bandwidth to broadcast several
standard-deÞnition channels. Most stations, once they begin broadcasting in digital, are offering HD
content from their parent network (for example, CBS, ABC, NBC, Fox, WB, UPN, and PBS).
What is an M-Card Module?
An M-Card module is a CableCard that allows the set-top to decrypt subscription digital channels.
The module Þts into the Multi-Stream slot on the back of the set-top (see page 4 for the location of
the slot). You can obtain a an M-Card module from your service provider.
Note: Your service provider may provide this when you Þrst receive the set-top.
Where Are the Connection Diagrams?
The diagrams at the end of this guide show examples of common ways to connect the set-top to
your other electronic devices. 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 set-top.
Some of the required cables are shown in the connection diagrams and on page 2 of this guide.
10
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Picture Formats
What is the Difference Between a Standard-Screen and a
Wide-Screen HDTV
The type of screen your HDTV has (wide screen or standard screen) determines how the set-top
displays programs on the screen. The picture format for an HDTV is a combination of aspect ratio
and screen resolution and is different for standard-screen and wide-screen HDTVs.
What is Aspect Ratio?
An aspect ratio is the ratio of the width to the height of the TV screen. The aspect ratios differ
because the television industry manufactures both standard-screen and wide-screen HDTVs to
appeal to consumer viewing preferences.
What is the Screen Resolution and Scan Rate?
The screen resolution indicates the amount of detail that the picture displays. Resolution is
identiÞed by the number of display lines on the screen. The techniques that an HDTV uses to
“paint” the picture on the screen are referred to as progressive and interlaced.
With the progressive method, the lines are drawn on the screen one at a time in sequential order.
The interlaced method involves refreshing pixels in alternation — Þrst the odd lines and then the
even lines.
For advance setup, select the scan modes that your TV can support. Refer to your set-top and
HDTV user’s guides to choose the proper scan rates (480i, 480p, 720p, 1080i) for your setup.
For example, a resolution of 1080i indicates that the screen shows 1080 lines in an interlaced
display, and 480p indicates that the screens shows 480 lines in a progressive display.
Notes:
•
The screen resolution (1080i, 480p, and so forth) is sometimes referred to as the scan rate.
The terms are interchangeable.
•
You can stretch and zoom the displayed picture using the built-in capability of the set-top by
pressing the # key on the remote control.
A standard-screen HDTV has a 4x3
aspect ratio. The screen is 4 units wide for
every 3 units tall.
A wide-screen HDTV is one-third wider than a
standard-screen HDTV. The screen is 16 units
wide for every 9 units tall.
16
4
3
9
A screen resolution of 480p or 480i Þlls
A screen resolution of 720p or 1080i Þlls the screen.
the screen.
11
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Connecting to an HDTV with an HDMI Connector
WARNING:
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting
any device cables to the set-top.
Required cables:
• 1 HDMI-to-HDMI cable
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C16907
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C16906
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
Y
A
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
HDTV
DIGITAL
AUDIO OUT
VIDEO
OUT
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
Back of HDTV
Cable Input
AUDIO
HDMI
CENTER
CHANNEL IN
ON
OFF
AUDIO IN
DVI/HDCP
S-VIDEO
VIDEO
R
L
ANT (75
)
VIDEO
L/
Y
Y
ANT-1
OUT
PB
PR
L
PB
PR
L
MONO
L/
MONO
AUDIO
R
AUDIO
AUDIO
R
R
R
HD 1
HD 2
ANT-2
IN
IN
OUT
IN
T12968
Important Notes Regarding the HDMI Interface on the Set-Top
The HDMI interface automatically conÞgures the audio output for a format supported by the
television. Because not all TVs support the Dolby®Digital input, the HDMI interface may
automatically select a 2-channel stereo audio conÞguration instead of Dolby Digital, which it carries
over to the other digital audio outputs of the set-top. This prevents your home theater system or
Dolby Digital decoder from providing the full Dolby Digital surround-sound effect.
You can override this conÞguration 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 set-top.
Notes:
• If the TV is not Dolby Digital capable, it may not produce audio through its speakers when the
Audio: Digital Out setting on the set-top 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.
• Digital content is encrypted with High-Bandwidth Content Protection (HDCP) on the DVI/HDMI
port. This set-top is not compatible with devices that do not support HDCP. You must use
either the PrPbY or 1394 connection to connect the set-top to these devices.
12
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Connecting to an HDTV with a DVI Connector
WARNING:
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting
any device cables to the set-top.
Required cables:
• 1 HDMI-to-DVI or 1 HDMI-to-HDMI cable and 1 DVI adapter
• 1 audio Left/Right cable
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C16907
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C16906
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
Y
A
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
HDTV
DIGITAL
AUDIO OUT
VIDEO
OUT
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
LISTED 14H1
CABLE EQUIP.
CATV CONVERTER
MADE IN MEXICO
Back of HDTV
Cable Input
AUDIO
DVI/HDCP
IN
CENTER
CHANNEL IN
ON
OFF
AUDIO IN
I/HDCP
S-VIDEO
VIDEO
R
L
ANT (75
)
VIDEO
Y
Y
ANT-1
OUT
L/
PB
PR
L
AUDIO
R
PB
PR
L
MONO
L/
MONO
AUDIO
R
AUDIO
R
R
HD 2
HD 2
ANT-2
IN
OUT
IN
T12969
Notes:
• When you connect the HDMI connector to the DVI connector on your HDTV, you need an HDMI-
to-DVI adaptor and a separate audio connection.
• Digital content is encrypted with High-Bandwidth Content Protection (HDCP) on the DVI/HDMI
port. This set-top is not compatible with devices that do not support HDCP. You must use
either the PrPbY or 1394 connection (which uses Digital Transmission Content Protection, or
DTCP) to connect the set-top to these devices.
• Also refer to the Important Notes Regarding the HDMI Interface on the Set-top on page 12.
13
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Connecting to an HDTV with Component Input (PrPbY)
WARNING:
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting
any device cables to the set-top.
Required cables:
• 1 set component video cables (PrPbY)
• 1 audio Left/Right cable
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C1690
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C16
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
A
Y
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
DIGITAL
AUDIO OUT
VIDEO
OUT
HDTV
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
Back of
HDTV
Cable Input
AUDIO
DVI/HDCP
IN
CENTER
CHANNEL IN
ON
OFF
AUDIO IN
DVI/HDCP
S-VIDEO
VIDEO
R
L
ANT (75
)
VIDEO
Y
Y
ANT-1
OUT
L/
PB
PR
L
AUDIO
R
PB
PR
L
MONO
L/
MONO
AUDIO
R
AUDIO
R
R
HD 1
HD 2
ANT-2
IN
IN
OUT
IN
T12970
14
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Connecting to a Home Theater System with
Component Input (PrPbY)
Required cables:
• 3 sets component video cables (PrPbY)
• 1 audio Left/Right cable
• 2 coaxial digital audio cables
• 1 video cable
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C1690
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C16906
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
A
Y
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
DIGITAL
AUDIO OUT
VIDEO
OUT
HDTV
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
Back of Home
Theater Receiver
Cable
Input
DIGITAL
AUDIO
TV/CABLE
DVD
VIDEO 1
COMPONENT VIDEO
MONITOR
Y
Y
Y
1
S-VIDEO
VIDEO
S-VIDEO
VIDEO
S-VIDEO S-VIDEO
VIDEO VIDEO
PB
PR
PB
PR
PB
PR
S-VIDEO
OUT
2
3
L
AUDIO
R
L
AUDIO
R
L
L
1
2
VIDEO OUT
IN
OUT
4
AUDIO
AUDIO
R
R
IN
OUT
T12971
WARNING:
Electric shock hazard! Unplug
all electronic devices before
connecting or disconnecting any
device cables to the set-top.
Back of Home Theater Receiver
DIGITAL
AUDIO
TV/CABLE
DVD
VIDEO 1
COMPONENT VIDEO
MONITOR
Y
P
P
Y
P
P
Y
P
P
1
S-VIDEO
VIDEO
S-VIDEO
VIDEO
S-VIDEO S-VIDEO
B
R
B
R
B
R
S-VIDEO
OUT
2
3
VIDEO
VIDEO
Back of Home Theater Receiver
L
AUDIO
R
L
AUDIO
R
L
L
1
2
VIDEO OUT
IN
OUT
DIGITAL
4
TV/CABLE
DVD
VIDEO 1
COMPONENT VIDEO
MONITOR
AUDIO
AUDIO
AUDIO
Y
P
P
Y
P
P
Y
P
P
1
R
R
S-VIDEO
VIDEO
S-VIDEO
VIDEO
S-VIDEO
B
R
B
R
B
R
S-VIDEO
OUT
IN
OUT
2
3
VIDEO
L
AUDIO
R
L
AUDIO
R
L
1
2
Back of
DVD Player
VIDEO OUT
IN
OUT
4
AUDIO
DIGITAL
OUT
COAXIAL
AUDIO OUT
VIDEO
OUT
R
IN
OUT
R
L
Back of
HDTV
Y
P
B
PB
AUDIO
CENTER
CHANNEL IN
OPTICAL
DIGITAL OUT
S-VIDEO
OUT
COMPONENT VIDEO OUT/
PROGRESSIVE SCAN
DVI/HDCP
IN
ON
OFF
AUDIO IN
DVI/HDCP
T11135
S-VIDEO
R
L
ANT (75½)
VIDEO
L/
Y
P
P
Y
P
P
VIDEO
ANT-1
OUT
B
R
L
B
R
L
MONO
L/
MONO
AUDIO
R
AUDIO
R
AUDIO
R
R
Note: This connection assumes
that audio is provided by the home
theater speakers.
VIDEO-1 VIDEO-2 HD 1
IN
AUDIO
OUT
HD 2
ANT-2
IN
IN
T13087
15
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Connecting to a Stereo VCR and HDTV (optional)
WARNING:
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting
any device cables to the set-top.
Required cables:
• 1 RF coaxial cable
• 2 sets composite A/V cables
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C16907
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
R
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C16906
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
A
Y
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
DIGITAL
AUDIO OUT
VIDEO
OUT
HDTV
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
Cable Input
RF IN
Back of
Stereo VCR
L
R
L
R
Note: This connection
allows for recording to
RF OUT
VIDEO
IN
AUDIO
IN
VIDEO
OUT
AUDIO
OUT
the VCR and for watching
VCR tapes on your HDTV.
To watch HD content, use
the HDMI, PrPbY, or DVI
connector.
Back of
HDTV
AUDIO
DVI/HDCP
IN
CENTER
CHANNEL IN
ON
OFF
AUDIO IN
DVI/HDCP
S-VIDEO
VIDEO
R
L
ANT (75½)
VIDEO
Y
Y
ANT-1
OUT
L/
PB
PR
L
AUDIO
R
PB
PR
L
MONO
L/
MONO
AUDIO
R
AUDIO
R
R
VIDEO-1 VIDEO-2 HD 1
IN
AUDIO
OUT
HD 2
ANT-2
IN
IN
T12972
16
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Connecting to an HDTV with a 1394 Connector
Required cables:
• 1 6-pin to 4-pin 1394 cable (Consult your TV user’s guides for more detailed information)
• 1 set component A/V cables
• 1 set audio Left/Right cables
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C16907
STB RF MAC: 001868C16906
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
A
Y
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
DIGITAL
AUDIO OUT
VIDEO
OUT
HDTV
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
AUDIO
CENTER
CHANNEL IN
1394 IN
Cable
Input
ON
OFF
Important: When you
connect the set-top to
your TV using a 1394
connection, you must
make the additional
video and audio
connections to your
TV to receive analog
signals.
AUDIO IN
DVI/HDCP
S-VIDEO
VIDEO
R
L
WARNING:
Electric shock
ANT (75
)
hazard! Unplug all
electronic devices
before connecting
or disconnecting
any device cables
to the set-top.
VIDEO
Y
Y
ANT-1
OUT
L/
MONO
PB
PR
L
PB
PR
L
L/
MONO
AUDIO
R
AUDIO
R
AUDIO
R
R
HD 1
HD 2
ANT-2
Back of
HDTV
IN
IN
OUT
IN
T12973
Connecting the Set-top in HD Mode to an SDTV with
Component Input (PrPbY)
WARNING:
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting
any device cables to the set-top.
Explorer Set-top
MULTI-STREAM CABLE CARD
AUDIO OUT
STB SN: SABNFSRVG
L
Pr
CAUTION
eCM MAC: 001868C1690
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Pb
IR
AVIS: RISQUE DE CHOC
STB RF MAC: 001868C169
ELECTRIQUE NE PAS OUVRIR
R
THIS DEVICE IS INTENDED TO
BE ATTACHED TO RECEIVER
A
Y
THAT IS NOT USED TO RECEIVE
OVER-THE-AIR BROADCAST
SIGNALS. CONNECTION OF THIS
DEVICE IN ANY OTHER FASHION
MAY CAUSE HARMFUL
120 VAC
60HZ 400W
120 VAC
60HZ 40W
INTERFERENCE TO RADIO
COMMUNICATIONS AND IS IN
VIOLATION OF THE FCC RULES,
PART 15.
DIGITAL
AUDIO OUT
VIDEO
OUT
HDTV
S - VIDEO
OUT
OPTICAL
AUDIO OUT
USB
1394 1394
CABLE
IN
CABLE
OUT
CATV CONVERTER
MADE IN MEXICO
LISTED 14H1
CABLE EQUIP.
Back of SDTV
Cable
Input
RF IN
Y
L
R
L
R
PB
PR
Note: The set-top must
be set to the proper output
mode, typically 480i.
RF OUT
VIDEO
IN
AUDIO
IN
VIDEO
OUT
AUDIO
OUT
T12974
17
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Index
1394 4, 6, 17
D
Dashes display
5
Diagrams. See Connecting the set-top
A
to other devices
AC
Digital TV, What is it 10
Outlet iv, 4
Power input
Aspect ratio 11
Display, LED
3
4
DVI connector 2, 4, 6, 13
F
FAQs 10
B
FCC compliance Back Cover
Formats, picture 11
Frequently Asked Questions. See FAQs
Back panel
4
Burn-in of screen
8
Front panel
3
C
CableCard 2, 4, 10
Cables
Cable Out, connector
H
2
HD
4
broadcasting 10
mode 4, 5, 6, 7, 17
format 1, 10
Compliance, FCC and Canadian EMI Back Cover
Component video connection. See PrPbY
Composite
Connectors
7
HDTV
Connections
6
See also Front panel; Back panel
formats 11
What is it 10
HDMI 4, 6, 12
required for HDTV
required for SDTV
VCR 6, 7
6
7
High-deÞnition. See HD
Connecting the set-top to other devices;
HDTV with 1394 connector 17
HDTV with component input (PrPbY) 14
HDTV with DVI connector 13
HDTV with HDMI connector 12
HDTV with VCR 16
Home theater system connection 15
I
Interlaced scan rate 11
IR Sensor
3
Home Theater System with component input
(PrPbY) 15
K
Keys. See Front panel; Back panel
SDTV 17
Consumer support
1
L
Controls. See Front panel
LED Display
3
M
M-Card. See Multi-Stream CableCARD
Multi-Stream CableCARD 2, 4, 10
18
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Index, continued
P
Standard-deÞnition, What is it 10
Standard screen TV 11
Performance tips. See Troubleshooting.
Stretching and zooming picture 8, 11
Picture
Support, consumer
1
Doesn’t display
Formats 11
9
T
No color
Picture-in-picture. See PIP
PIP
9
Time display
5
Troubleshooting
TV
9
8
Ports. See Connectors
Product information
digital, what is it 10
formats 11
1
Programming, viewing
8
HDTV, what is it 10
Progressive scan rate 11
PrPbY
programming
8
resolution 11
connector 4, 6, 7
standard screen 11
HDTV connection 14
home theater connection 15
SDTV connection 17
standard-deÞnition, What is it 10
wide screen 11
U
R
Updating, software
9
Remote control
8
USB port
3
RGB connector. See PrPbY
V
S
VCR connection 6, 7, 16
S-Video
7
View programs
8
Safety ii, iv-v
Scan rates 11
Screen
W
Watch TV 1, 8
burn-in
8
Web access to product information
Welcome
1
resolution 11
size 11
1
Widescreen TV 11
SD mode 4, 5, 7, 17
SDTV
Y
Connections 7, 17
What is it 10
Serial number, locating
YPbPr. See PrPbY
1
9
Set-top. See Welcome
Z
Software updates
9
Zoom picture 8, 11
Sound, troubleshooting
19
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FCC Compliance
Canada EMI Regulation
This Class B digital apparatus complies with Canadian
ICES-003.
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. 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:
Cet appareil numérique de la class B est conforme à la
norme NMB-003 du Canada.
20060628FDC
Software and Firmware Use
ScientiÞc-Atlanta, Inc. owns copyrights to the software
included in your set-top and furnishes the software to
your cable service provider under a license agreement.
You may only use or copy this software in accordance
with the terms of your cable service provider.
ScientiÞc-Atlanta, Inc. owns copyrights to the Þrmware
in this equipment. You may only use the Þrmware in
the equipment in which it is provided. Any reproduction
or distribution of this Þrmware, or any portion of it,
without the express written consent of ScientiÞc-
Atlanta, Inc. is prohibited.
• Reorient or relocate the receiving antenna, if applicable.
• 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.
Trademarks
ScientiÞc Atlanta, the ScientiÞc Atlanta logo, and
Explorer are registered trademarks of ScientiÞc-
Atlanta, Inc.
• Consult the cable company or an experienced radio/
television technician for help.
Any changes or modiÞcations not expressly approved
by ScientiÞc-Atlanta, Inc., could void the user’s
authority to operate the equipment.
4240HDC, 4250HDC, and Multi-Room are trademarks
of ScientiÞc-Atlanta, Inc.
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
numbers listed are 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.
Cisco, the Cisco logo, and Cisco Systems are
trademarks or registered trademarks of Cisco
Systems, Inc. and/or its afÞliates in the U.S. and
certain other countries.
CableCARD and M-Card are trademarks of Cable
Television Laboratories, Inc.
Manufactured under license from Dolby Laboratories.
Dolby is a trademark of Dolby Laboratories.
HDMI, the HDMI logo, and High-DeÞnition Multimedia
Interface are trademarks or registered trademarks of
HDMI Licensing LLC.
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.
Macrovision is a registered trademark of Macrovision
Corp.
All other trademarks shown are trademarks of their
respective owners.
EXPLORER 4240HDC and 4250HDC
Digital Interactive Set-top
Model: 4240HDC and 4250HDC
Manufactured by: ScientiÞc-Atlanta, Inc.;
5030 Sugarloaf Parkway;
Disclaimer
ScientiÞc-Atlanta, Inc. assumes no responsibility for
errors or omissions that may appear in this guide.
ScientiÞc-Atlanta, Inc. reserves the right to change this
guide at any time without notice.
Lawrenceville, Georgia 30044; USA
Telephone 770-236-1077
ScientiÞc Atlanta, A Cisco Company
5030 Sugarloaf Parkway
Box 465447
770.236.5000
Lawrenceville, GA 30042
This document includes various trademarks of ScientiÞc-Atlanta, Inc. Please see the Trademarks
section of this document for a list of the ScientiÞc-Atlanta, Inc., trademarks used in this document. All
other trademarks shown are trademarks of their respective owners.
Product and service availability is subject to change without notice.
© 2007 by ScientiÞc-Atlanta, Inc. All rights reserved.
July 2007
Printed in United States of America
4015107 Rev A
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