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iv

•  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)

 WARNING:

Avoid electric shock and 

Þ

 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 

Þ

 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.

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 

Þ

 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 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 

Þ

 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 unit

•  Size of the grounding conductors

IMPORTANT SAFETY INSTRUCTIONS

Summary of Contents for Explorer 4240HDC

Page 1: ...SETTINGS EXIT GUIDE INFO CH CH VOL VOL SELECT EXPLORER 4250HDC POWER SETTINGS Explorer Digital Set Top User s Guide Models 4240HDC TM and 4250HDC TM with Multi Stream CableCARDTM Interface...

Page 2: ...8 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 95...

Page 3: ...V 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...

Page 4: ...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 indicat...

Page 5: ...om tip over 20070320 Set Top Cable US Canada 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...

Page 6: ...tion The consumer support website provides news and information about this product For more information please refer to the following Web address http www scienti catlanta com products consumers new_c...

Page 7: ...e cables or adapters at your local electronics supplier 4240HDC or 4250HDC Set top Component Video Cables PrPbY Connection Guide Audio Left Right Cable Power Cord RF Coaxial Cable Coaxial Digital Audi...

Page 8: ...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 Accesses on screen services such as the on scree...

Page 9: ...f inputs composite on Video Audio Out your TV 6 Audio Out Connects to RCA cables that send analog audio signals left and right to Left Right the stereo inputs on a TV 7 S Video Out Connects to an S Vi...

Page 10: ...ection 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 pro...

Page 11: ...es of your HDTV See the connection diagram on page 14 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...

Page 12: ...nections for a Standard De nition TV and VCR The PrPbY connectors can provide standard de nition component video signals to an SDTV Note To connect PrPbY to an SDTV you must set the HD Setup Wizard on...

Page 13: ...n either from the on screen guide or while viewing a program Select View a speci c program in the guide Stretch and Zoom Program You can stretch and zoom SD or HD programs by pressing the key on the r...

Page 14: ...er 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 connecto...

Page 15: ...igh de 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 st...

Page 16: ...icture displays Resolution is identi ed 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 W...

Page 17: ...heater 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 H...

Page 18: ...fore connecting or disconnecting any device cables to the set top T12969 Explorer Set top IR THIS DEVICE IS INTENDED TO BE ATTACHED TO A RECEIVER THAT IS NOT USED TO RECEIVE OVER THE AIR BROADCAST SIG...

Page 19: ...NCE TO RADIO COMMUNICATIONS AND IS IN VIOLATION OF THE FCC RULES PART 15 120 VAC 60HZ 400W LISTED 14H1 CABLE EQUIP 120 VAC 60HZ 40W CABLE IN 1394 S VIDEO OUT OPTICAL AUDIO OUT USB CABLE OUT VIDEO OUT...

Page 20: ...O S VIDEO VIDEO 1 S VIDEO OUT VIDEO OUT MONITOR VIDEO L R AUDIO S VIDEO OUT IN OUT IN T11135 Connecting to a Home Theater System with Component Input PrPbY Required cables 3 sets component video cable...

Page 21: ...S OUVRIR CATV CONVERTER MADE IN MEXICO CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Back of Stereo VCR RF OUT RF IN R L AUDIO IN VIDEO IN R L AUDIO OUT VIDEO OUT Back of HDTV DVI HDCP IN AUDIO CENTER CH...

Page 22: ...EL IN AUDIO IN DVI HDCP ANT 75 IN OUT L R ANT 1 HD 2 Y OUT ANT 2 PB PR L R VIDEO L MONO R L MONO R AUDIO IN ON OFF IN HD 1 S VIDEO VIDEO Y PB PR L R AUDIO AUDIO 1394 IN Cable Input Important When you...

Page 23: ...nnector 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 device...

Page 24: ...ion 1 Welcome 1 Widescreen TV 11 Y YPbPr See PrPbY Z Zoom picture 8 11 P Performance tips See Troubleshooting Picture Doesn t display 9 Formats 11 No color 9 Picture in picture See PIP PIP 8 Ports See...

Page 25: ...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...

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