Scientific Atlanta 4240HDC Explorer Digital Set Top User Guide

: June 16, 2024
: Scientific Atlanta

Scientific Atlanta 4240HDC Explorer Digital Set Top User Guide

Notice to Installers

The servicing instructions in this notice are for use by qualifi ed 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 qualifi ed 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.For products sold in the US and Canada, this reminder is provided to call the system installer’s attention to Article 820-93 and Article 820-100 of the NEC (or Canadian Electrical Code Part 1), which provides guidelines for proper grounding of the coaxial cable shield

** This symbol is intended to alert you that
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION: To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel
WARNING
TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. **

**** This symbol is intended to alert you of the presence of important operating and maintenance (servicing) instructions in the literature accompanying this product.

U.S. Patents

A patent notice is affi xed to this product. In addition, the product may also be covered by one or more of the following patents:

4,498,169, 4,692,919, 4,748,667; 4,829,569; 4,866,770; 4,885,775; 4,888,799; 4,890,319; 4,922,456; 4,922,532; 4,924,498; 4,965,534; 4,991,011;
5,003,384; 5,012,510; 5,029,207; 5,045,816; 5,053,883; 5,054,071; 5,058,160; 5,142,575; 5,142,690; 5,146,526; 5,155,590; 5,214,390; 5,225,902;
5,225,925; 5,235,619; 5,237,610; 5,239,540; 5,241,610; 5,247,364; 5,255,086; 5,257,403; 5,267,071; 5,270,809; 5,271,041; 5,272,752; 5,282,028;
5,285,497; 5,287,351; 5,301,028; 5,309,514; 5,317,391; 5,319,709; 5,341,425; 5,347,388; 5,347,389; 5,357,276; 5,359,601; 5,361,156; 5,367,571;
5,379,141; 5,379,145; 5,381,481; 5,390,337; 5,400,401; 5,406,558; 5,418,782; 5,420,866; 5,420,923; 5,425,101; 5,428,404; 5,430,568; 5,434,610;
5,436,749; 5,438,370; 5,440,632; 5,442,472; 5,455,570; 5,457,701; 5,471,492; 5,477,199; 5,477,262; 5,477,282 5,477,370; 5,481,389; 5,481,542;
5,485,221; 5,493,339; 5,497,187; 5,500,758; 5,502,499; 5,506,904; 5,519,780; 5,539,822; 5,550,825; 5,579,055; 5,579,057; 5,583,562; 5,592,551;
5,596,606; 5,600,378; 5,602,933; 5,640,388; 5,657,414; 5,675,575; 5,684,876; 5,715,515; 5,724,525; 5,734,822; 5,740,300; 5,742,677; 5,754,940;
5,757,416; 5,771,064; 5,774,859; 5,825,829; 5,826,167; 5,850,305; 5,854,703; 5,870,474; 5,892,607; 5,920,626; 5,923,755; 5,930,024; 5,930,515;
5,937,067; 5,963,352; 5,966,163; 5,982,424; 5,991,139; 5,999,207; 6,005,631; 6,005,938; 6,016,163; 6,028,941; 6,029,046; 6,052,384; 6,055,244;
6,072,532; 6,105,134; 6,148,039; 6,157,719; 6,188,729; 6,195,389; 6,212,278; 6,215,530; 6,219,358; 6,240,103; 6,243,145; 6,246,767; 6,252,964;
6,272,226; 6,292,081; 6,292,568; 6,320,131; 6,374,275; 6,405,239; 6,411,602; 6,417,949; 6,424,714; 6,424,717; 6,433,906; 6,438,139; 6,463,586;
6,467,091; 6,476,878; 6,493,876; 6,510,519; 6,516,002; 6,516,412; 6,526,508; 6,538,595; 6,546,013; 6,560,340; 6,567,118; 6,570,888; 6,622,308;
6,629,227; 6,664,984; 6,667,994; 6,671,879; 6,674,967; 6,678,891; 6,714,598; 6,721,352; 6,721,956; 6,725,459; 6,738,982; 6,744,892; 6,744,967;
6,751,271; 6,760,918; 6,795,972; 6,802,077; 6,804,708; 6,811,447; 6,817,028; 6,822,972; 6,823,385; 6,832,386; 6,845,106; 6,868,473; 6,874,075;
6,889,191; 6,909,471; 6,917,622; 6,917,628; 6,922,412; 6,927,806; 6,928,656; 6,931,058; 6,937,729; 6,969,279; 6,971,008; 6,971,121; 6,978,310;
6,986,156; 6,988,900; 6,996,838; 7,010,801; 7,053,960; 7,065,213; 7,069,578; 7,069572; D348065; D354959; D359737; D363932; D390217;
D434753; D507240; D507535; D513407; D516518; RE36368; RE36988

IMPORTANT SAFETY INSTRUCTIONS

Read These Instructions
Keep These Instructions
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. 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 fi re 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 groundingtype 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 fi t into your outlet, consult an electrician for replacement of the obsolete outlet.

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.

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 unitï
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 ANSI/NFPA 70)

Example Of Antenna Grounding

SAFETY INSTRUCTIONS

WARNING:
Avoid electric shock and fi re 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.

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.

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.

Eliminate AC Mains Overloads

WARNING:
Avoid electric shock and fi re 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.

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 manufacturerís instructions.
Do not place this apparatus on a bed, sofa, rug, or similar surface.
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 amplifi ers) that produce heat.
Do not install this apparatus in an enclosure, such as a bookcase or rack, unless the installation provides proper ventilation.
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.

WARNING :
Avoid electric shock and fi re hazard! Do not expose this product to liquids, rain, or moisture.
WARNING :
Avoid electric shock and fi re 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 electric shock and fi re hazard! Never push objects through the openings in this product. Foreign objects can cause electrical shorts that can result in electric shock or fi re.

Accessories Warning

WARNING :
Avoid electric shock and fi re hazard! Only use attachments/accessories specifi ed by your service provider or the manufacturer.

Service Warnings

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 qualifi ed service personnel.

Servicing is required when the apparatus has been damaged in any way, such as a powersupply 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.

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.

Protect the Product when Moving It
Always disconnect the power source when moving the apparatus or connecting or disconnecting cables

WARNING:
Avoid personal injury and damage to this product! Use only with the cart, stand, tripod, bracket, or table specifi ed 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.

Welcome
The ExplorerÆ 4240HDCTM and 4250HDCTM Digital Interactive Set-Tops with a Multi-Stream CableCARDTM (M-CardTM) provide high-defi nition (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: http://www.scientifi catlanta.com/products/consumers/new_cableboxes.htm

Identify Your 4240HDC or 4250HDC
To fi nd 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 ìSTB SNì and is located beneath the bar code

f 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:

Whatís In The Carton?

The set-top carton contains the following items:

4240HDC or 4250HDC Set-top
Connection Guid
Power Cord
Component Video Cables (PrPbY)
Audio Left/Right Cable

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)| | Composite A/V Cables| | HDMI Adapter|
---|---|---|---|---|---
S-Video Cable| | RGB Adapter Cable (RCA to RCA)| | RGB Adapter|
HDMI-to-HDMI Cable| | RGB Adapter Cable (RCA to BNC)| | RGB Adapter Cable (RCA to VGA)|
HDMI-to-DVI Cable| | Optical Digital Audio Cable| | IEEE 1394 6-Pin to 4-Pin Cable|

Whatís on the Front Panel?

Back Panel?

Cable In
Connects to a coaxial cable that delivers the signal from your service
provider
Cable Out
Connects to a coaxial cable that sends analog audio and video signals to a TV or VCR. These signals are standard-defi nition TV (SDTV) video and stereo audio
HDTV
Connects to the component video input (YPbPr) on the HDTV, when in HD mode
Digital Audio Out
Connects to an RCA cable that sends a digital audio signal to a surround- sound receiver or other digital audio device
Out 2 (Secondary Video/ Audio Out)
Connects to either a VCR or to another set of inputs (composite) on Video/ Audio Out) your TV
Audio Out
Connects to RCA cables that send analog audio signals (left and right) to (Left, Right) the stereo inputs on a TV
S-Video Out
Connects to an S-Video cable that sends an S-Video signal to your TV or VCR. This signal is standard defi nition, but higher quality than other SDTV connections
IR
This connector reserved for future use
Optical AudioOutput
Connects to an optical cable that sends a digital audio signal to a surround- Output sound receiver or other digital audio device
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)
Multi-StreamCableCARD
Slot for Multi-Stream (M-Card) module, which decrypts CableCARD subscription digital channels. This set-top will not operate correctly without an M-Card module. Obtain an M-Card module from your service provider
USB Connects to external USB devices such as a keyboard or a mouse
1394 Connects to display devices that are equipped with a 1394 input1
AC Outlet Connects to the AC power cord from another device, such as a TV
AC Power Input Connects to the power cord to deliver power to the set-top

Note : This illustration may vary from the acctual product.

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 standard screen (4:3). S ee page 11 for more information.
Connecting

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 to the set-top and TV. See pages 12 through 17 and the related user guides for your devices for more information.
Connecting
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.

Do not turn on the set-top or TV yet.

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 settop authorized.

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.

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 userís guides and the cabling diagrams in this guide for more detailed connection information.
Note: The labeling on your set-top may vary slightly.

Required Connections to an HDTV (use one)| Set-top Connections| HDTV Connections
---|---|---
HDMI| Some HDTVs have a High-Definition 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.| |
DVI| 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.See the connection diagram on page 13 for an example.| |
PrPbY| The PrPbY connectors can provide high-definition component video signals to an HDTV. 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.See the connection diagram on page 14 for an example.| |
RGB| 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.Check with your service provider for information about acquiring an RGB adapter, or you can purchase the adapter at your local electronics supplier.| |
1394| 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.See the connection diagram on page 17 for an example.| |
Optional Connections to a VCR (use one)| Set- top Connections| VCR Connections
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.See the connection diagram on page 16 for an example.| |
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.| |
For Digital VCRs , you can use the 1394 out connector on the set-top.| |

Connections for a Standard-Defi nition TV and VCR When using the set-top with an SDTV, you must make one of the following connections to viewcontent. 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 userís guides and the cabling diagrams in this guide for more detailed information.
Note: The labeling on your set-top may vary slightly.

Required Connections to an SDTV (use one)| Set-top Connections| SDTV Connections
---|---|---
PrPbY| The PrPbY connectors can provide standard-definitioncomponent video signals to an SDTV. Note : To connect PrPbY to an SDTV, you must setthe HD Setup Wizard on the set-top to HD Mode, andselect the output video format (typically 480i) that willmatch the capabilities of your SDTV.| |
S-Video| The S-Video Out connection provides an optimal video connection to SDTVs.| |
Cable Out| The Cable Out connector provides a video and audio connection to an SDTV.| |
Optional Connection to a VCR| Set-top Connections| VCR Connections
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.| |

View Television Programming

Access Services and Programs
Access cable services and programs by pressing the following keys on the remote control:

Guide ñAccess 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.
Arrow sñSelect a program in the schedule.
Info ñDisplay a specifi c program description (either from the on-screen guide or while viewing a program).
Selectñ View a specifi c 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 userís guide that came with your HDTV for more information.

WARNING:
Avoid screen burn-in!
Do not display the same fi xed images on your HDTV screen for extended periods of time.

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.

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.

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 Defi nition Television), EDTV (Enhanced Defi nition Television), and HDTV (High-Defi nition Television). That means that all HDTV is digital, but not all digital TV is high-defi nition. A high-defi nition 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 highdefi nition. Getting the signal from digital cable also does not mean it is high- defi nition.

What is Standard-Defi nition Television?
Standard-defi nition 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 clearónoticeably better than on a standard analog television set using an antenna to receive over-the-air signals.

What is High-Defi nition Television?
High-defi nition 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 fi ve 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 DolbyÆ 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-defi nition 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 fi ts 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 fi rst 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 userís guides that came with your other electronic devices for further information.

What Cables Do I Need?
Some of the cables and adapters 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.

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 identifi ed by the number of display lines on the screen. The techniques that an HDTV uses to ìpaintî 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 ó fi rst 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 userís 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 4×3 aspect ratio. The screen is 4 units wide forevery 3 units tall.

A screen resolution of 480p or 480i fi lls the screen.

A wide-screen HDTV is one-third wider than a standard-screen HDTV. The screen is 16 units wide for every 9 units tall.

A screen resolution of 720p or 1080i fi lls the screen.

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

Important Notes Regarding the HDMI Interface on the Set-Top
The HDMI interface automatically confi gures the audio output for a format supported by the television. Because not all TVs support the DolbyÆ Digital input, the HDMI interface may automatically select a 2-channel stereo audio confi guration 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 confi guration by completing the following steps.

Press SETTINGS twice on the remote control to open the General Settings menu.
Press MOVE UP or MOVE DOWN to select the option Audio: Digital Out.
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.

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

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.

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 cab

Explorer Set-top

Connecting to a Home Theater System with Component Input (PrPbY)

Required cables:

3 sets component video cables (PrPbY)
2 coaxial digital audio cables
1 audio Left/Right cable
1 video cabl

Explorer Set-top

WARNING:
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables to the set-top

Note : This connection assumes that audio is provided by the home theater speakers.

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

Note : This connection allows for recording to the VCR and for watching VCR tapes on your HDTV. To watch HD content, use the HDMI, PrPbY, or DVI connector.

Connecting to an HDTV with a 1394 Connector

Required cables:

1 6-pin to 4-pin 1394 cable (Consult your TV userís guides for more detailed information)
1 set component A/V cables
1 set audio Left/Right cables

Explorer Set-top

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

WARNING :
Electric shock hazard! Unplug all electronic devices before connecting or disconnecting any device cables to the set-top

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

Index
1394 4, 6, 17

A
AC
Outlet iv, 4
Power input 4
Aspect ratio 11
B
Back panel 4
Burn-in of screen 8
C
CableCard 2, 4, 10
Cables 2
Cable Out, connector 4
Compliance, FCC and Canadian EMI Back Cover
Component video connection. See PrPbY
Composite 7
Connectors
See also Front panel; Back panel
required for HDTV 6
required for SDTV 7
VCR 6, 7
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 with component input
(PrPbY) 15
SDTV 17
Consumer support 1
Controls. See Front panel
D
Dashes display 5
Diagrams. See Connecting the set-top
to other devices
Digital TV, What is it 10
Display, LED 3
DVI connector 2, 4, 6, 13
F
FAQs 10
FCC compliance Back Cover
Formats, picture 11
Frequently Asked Questions. See FAQs
Front panel 3
H
HD
broadcasting 10
mode 4, 5, 6, 7, 17
format 1, 10
HDTV
Connections 6
formats 11
What is it 10
HDMI 4, 6, 12
High-defi nition. See HD
Home theater system connection 15
I
Interlaced scan rate 11
IR Sensor 3
K
Keys. See Front panel; Back panel
L
LED Display 3
M
M-Card. See Multi-Stream CableCARD
Multi-Stream CableCARD 2, 4, 10

Index, continued

P
Performance tips. See Troubleshooting.
Picture
Doesnít display 9
Formats 11
No color 9
Picture-in-picture. See PIP
PIP 8
Ports. See Connectors
Product information 1
Programming, viewing 8
Progressive scan rate 11
PrPbY
connector 4, 6, 7
HDTV connection 14
home theater connection 15
SDTV connection 17
R
Remote control 8
RGB connector. See PrPbY
S
S-Video 7
Safety ii, iv-v
Scan rates 11
Screen
burn-in 8
resolution 11
size 11
SD mode 4, 5, 7, 17
SDTV
Connections 7, 17
What is it 10
Serial number, locating 1
Set-top. See Welcome
Software updates 9
Sound, troubleshooting 9
Standard-defi nition, What is it 10
Standard screen TV 11
Stretching and zooming picture 8, 11
Support, consumer 1
T
Time display 5
Troubleshooting 9
TV
digital, what is it 10
formats 11
HDTV, what is it 10
programming 8
resolution 11
standard screen 11
standard-defi nition, What is it 10
wide screen 11
U
Updating, software 9
USB port 3
V
VCR connection 6, 7, 16
View programs 8
W
Watch TV 1, 8
Web access to product information 1
Welcome 1
Widescreen TV 11
Y
YPbPr. See PrPbY
Z
Zoom picture 8, 11

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. 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, 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.
Consult the cable company or an experienced radio/ television technician for help.

Any changes or modifi cations not expressly approved by Scientifi c-Atlanta, Inc., could void the userís nauthority 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 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.

Declaration of Conformity

This device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions:
the device may not cause harmful interference, and the device must accept any interference received, including interference that may cause undesired operation.

EXPLORER 4240HDC and 4250HDC
Digital Interactive Set-top
Model : 4240HDC and 4250HDC
Manufactured by: Scientifi c-Atlanta, Inc.;
5030 Sugarloaf Parkway;
Lawrenceville, Georgia 30044; USA
Telephone 770-236-1077

Canada EMI Regulation
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numÈrique de la class B est conforme ‡ la norme NMB-003 du Canada. 20060628FDC

Software and Firmware Use
Scientifi c-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.
Scientifi c-Atlanta, Inc. owns copyrights to the fi rmware in this equipment. You may only use the fi rmware in the equipment in which it is provided. Any reproduction or distribution of this fi rmware, or any portion of it, without the express written consent of Scientifi cAtlanta, Inc. is prohibited.

Trademarks
Scientifi c Atlanta, the Scientifi c Atlanta logo, and Explorer are registered trademarks of Scientifi cAtlanta, Inc. 4240HDC, 4250HDC, and Multi-Room are trademarks of Scientifi c-Atlanta, Inc.
Cisco, the Cisco logo, and Cisco Systems are trademarks or registered trademarks of Cisco Systems, Inc. and/or its affi liates 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-Defi nition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.
Macrovision is a registered trademark of Macrovision Corp.
All other trademarks shown are trademarks of their respective owners.

Disclaimer
Scientifi c-Atlanta, Inc. assumes no responsibility for errors or omissions that may appear in this guide. Scientifi c-Atlanta, Inc. reserves the right to change this guide at any time without notice

Scientifi c Atlanta, A Cisco Company 770.236.5000 5030 Sugarloaf Parkway www.scientifi catlanta.com Box 465447
Lawrenceville, GA 30042

This document includes various trademarks of Scientifi c-Atlanta, Inc. Please see the Trademarks section of this document for a list of the Scientifi c-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 Scientifi c-Atlanta, Inc. All rights reserved.
July 2007 Printed in United States of America 4015107 Rev A