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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.

The AC inlet on the unit must remain accessible and operable 
at all times.

Ground the Product

 WARNING: Avoid electric shock and fire 

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 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 unit

•  Size of the grounding conductors

•  Location of the antenna-discharge unit

•  Connection to grounding electrodes

•  Requirements for the grounding electrodes (see the 

following antenna grounding diagram as recommended
by NEC ANSI/NFPA 70)

Antenna Lead In Wire

T15378

Ground Clamps

Electric Service

Equipment

NEC = National Electrical Code 1990
National Fire Protection Association

TO CATV INSTALLER
This reminder is provided to call the CATV system installer’s attention
to Article 820-40 of the National Electrical Code (NEC) that provides
guidelines for proper grounding, and in particular, specifies that the 
cable ground shall be connected to the grounding system of the 
building, as close to the point of entry as practical.

Antenna Discharge 
Unit
(NEC Section 810-21)

Power Service
Grounding
Electrode System
(NEC Art 250, Part H)

Grounding
Conductors
(NEC Section 810-20)

Ground Clamps

 WARNING: Avoid electric shock and fire 

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 Power/Mains Overloads

 WARNING: Avoid electric shock and fire 

hazard! Do not overload AC power/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.

Summary of Contents for Explorer 4250

Page 1: ...Explorer 4250 Home Gateway User Guide ...

Page 2: ... of the NEC or Canadian Electrical Code Part 1 which provides guidelines for proper grounding of the coaxial cable shield 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 This symbol is intended to alert you of the presence of important operating and maintenance servicing instructions in the lit...

Page 3: ...orer 4250 Home Gateway Serial Number 4 Front Panel 5 Back Panel 6 Connecting the 4250 7 Connections for a Standard Definition TV and VCR 8 Performance Tips 9 Automatic Software Updates 9 Frequently Asked Questions 9 Connection Diagrams 10 Compliance Information 13 ...

Page 4: ...ocation 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 Antenna Lead In Wire T15378 Ground Clamps Electric Service Equipment NEC National Electrical Code 1990 National Fire Protection Association TO CATV INSTALLER This reminder is provided to call the CATV syste...

Page 5: ...rosol cleaner Do not use a magnetic static cleaning device dust remover to clean this product WARNING Avoid electric shock and fire hazard Never push objects through the openings in this product Foreign objects can cause electrical shorts that can result in electric shock or fire Accessories Warning WARNING Avoid electric shock and fire hazard Onlyuseattachments accessoriesspecified by your servic...

Page 6: ...50 For more information about this product visit our website http www cisco com web consumer support index html Explorer 4250 Home Gateway Serial Number If the 4250 requires troubleshooting in the future your cable service provider may ask for the serial number The serial number is on the back panel it begins with SA and is located in the lower left corner of the bar code Use the space provided he...

Page 7: ...trol 6 LED Display Displays the selected channel number and time of day The LED also displays the following Message Power 7 GUIDE Accesses on screen services such as the on screen guide video on demand or pay per view 8 INFO Displays a description of the selected program Available from the on screen guide and while viewing a program 9 EXIT Exits menus on screen guide and program information 10 SET...

Page 8: ...nition but higher quality than other SDTV connections 7 IR Port Connects to optional VCR Commander service May not be available on all 4250 models 8 USB Port Connects to external equipment such as a keyboard May not be available on all 4250 models 9 AC Outlet Connects the AC power cord from another device such as a TV 10 AC Power Input Connects the 4250 to an AC electrical outlet using the cord pr...

Page 9: ...cable service provider Connect the coaxial cable that carries the signal from your cable service provider to the CABLE IN connector on the back panel of the set top Connect your SDTV to the 4250 Refer to the Connection Diagrams section beginning on page 10 Plug the 4250 and the TV into an AC power source Important To protect the set top from power surge damage ground earth your cable product to pr...

Page 10: ...e VCR See page 11 for an example For VCRs that have Video and Left and Right audio connectors you can use the OUT 2 connectors Video Left and Right on the 4250 These connections generally provide a higher quality signal than the standard Cable Out connection See page 11 for an example Stereo VCR The Cable Out connection provides both a video and a stereo audio connection to an SDTV See page 10 for...

Page 11: ...at the volume is turned up Verify that the mute function is not engaged Check your secondary audio programming SAP settings Automatic Software Updates The TV screen may display a message that indicates the 4250 is automatically updating its software Should this occur wait for the time to appear on the front panel of your 4250 before continuing When the time appears the update is complete Frequentl...

Page 12: ...OLATIONOF THE FCC RULES PART 15 LISTED 14H1 CABLE EQUIP CABLE IN S VIDEO OUT CATV CONVERTER MADE IN MEXICO VIDEO OUT DIGITAL AUDIO OUT L R CABLE OUT T15622 TV RIGHT IN OUT LEFT AUDIO IN OUT CABLE ANTENNA VIDEO IN OUT USB 120 VAC 60HZ 400W 120 VAC 60HZ 40W Explorer 4250 IR THIS DEVICE IS INTENDED TO BE ATTACHED TO A RECEIVER THAT IS NOT USED TO RECEIVE OVER THE AIR BROADCAST SIGNALS CONNECTION OF T...

Page 13: ...OUT CATV CONVERTER MADE IN MEXICO VIDEO OUT DIGITAL AUDIO OUT L R CABLE OUT T15623 IN FROM ANT RIGHT IN OUT LEFT AUDIO IN OUT CABLE ANTENNA VIDEO IN OUT OUT TO TV USB 120 VAC 60HZ 400W 120 VAC 60HZ 40W Explorer 4250 Cable Input VCR TV Explorer 4250 IR THIS DEVICE IS INTENDED TO BE ATTACHED TO A RECEIVER THAT IS NOT USED TO RECEIVE OVER THE AIR BROADCAST SIGNALS CONNECTION OF THIS DEVICE IN ANY OTH...

Page 14: ...ONS AND IS IN VIOLATIONOF THE FCC RULES PART 15 LISTED 14H1 CABLE EQUIP CABLE IN S VIDEO OUT CATV CONVERTER MADE IN MEXICO VIDEO OUT DIGITAL AUDIO OUT L R CABLE OUT USB 120 VAC 60HZ 400W 120 VAC 60HZ 40W Explorer 4250 Home Theater Receiver VIDEO COMPONENT VIDEO 1 Y PB PR 2 Y PB PR Y PB PR L R AUDIO S VIDEO DIGITAL AUDIO TV CABLE 1 2 3 4 VIDEO L R AUDIO S VIDEO DVD S VIDEO VIDEO 1 S VIDEO OUT VIDEO...

Page 15: ...vice 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 1 the device may not cause harmful interference and 2 the device must accept any interference received including interference that may cause undesired operation Explorer 4250...

Page 16: ...ew a list of Cisco s trademarks go to this URL www cisco com go trademarks Rovi is a trademark of Rovi Corporation Other third party trademarks mentioned are the property of their respective owners The use of the word partner does not imply a partnership relationship between Cisco and any other company 1110R 2005 2007 2010 2012 Cisco Systems Inc All rights reserved October 2012 Printed in United S...

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