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activity caused by these circuits and codes disturbs your regular cable TV reception. 
 

Connecting a cable modem to a computer 

To connect to Ethernet or USB on a PC running a supported Windows version, we recommend 
using the Installation Assistant on the EC420 Installation CD-ROM. Insert the EC420 CD-ROM in 
the CD-ROM device, agree to the License Agreement, and the following window is displayed: 
 
To start the Installation Assistant, click Installation Assistant. The procedures it guides you through 
are described in the following sections in this guide: 
Ethernet  
USB 
 

Getting Started 

Making sure that you’ve received the following items. If any item is missing or damaged, contact 
your dealer immediately. 
 

TurboComm DOCSIS Cable Modem, Model EC420 

 

Ethernet Cable (6 feet) 

 

USB Cable (4 feet) 

 AC 

Adaptor 

(AD-121AN) 

 This 

Manual 

 

Basic EC420 Network Requirements 

 An 

EC420 

 

A connection to your cable TV system 

 

A subscription to cable modem service from your cable TV provider 

 

One or more computers with minimum: 

 

Pentium-class processor or faster 

 

16Mb of memory 

 

10Mb of hard disk space available 
Windows 98, Windows 98SE, Windows Me, Windows 2000, Windows XP, Macintosh, or 
Linux with operating system CD-ROM available 

 

A wired network adaptor for each computer on the network 

 

For wired connections, Ethernet cables 

 
 

Summary of Contents for EC420

Page 1: ...ng instructions Retain Instructions You should save all the safety and operating instructions for your future reference Heed Warnings Comply with all warnings on the products and in the operating instructions Check Power Sources Operate this product only from the type of power source indicated on the product s marking label If you are not sure of the type of power supplied to your home consult you...

Page 2: ... heat source including amplifiers Do not place this product in a built in installation such as a bookcase or equipment rack unless you provide proper ventilation Do Not Use Accessories Do not use attachments unless they are recommended by TurboComm as they may cause electrical or fire hazards Use the Recommended AC Adaptor You must use the adaptor that comes with your TurboComm Cable Modem Do Not ...

Page 3: ... of any kind into this product through openings as they may touch dangerous voltage or short out parts which could result in a fire or electric shock Never spill liquid on the product Protect From Lightning For added protection for this product during a lightning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the cable system T...

Page 4: ...a combination of high performance and interoperability among many of the cable system operators in North America Working of Cable modem Digital signals are represented by high and low electrical voltage levels And how fast these levels can switch and still be transmitted is determined by the Bandwidth of the transmission system The pair of wires used in a telephone connection have greatly limited ...

Page 5: ... guide Ethernet USB Getting Started Making sure that you ve received the following items If any item is missing or damaged contact your dealer immediately TurboComm DOCSIS Cable Modem Model EC420 Ethernet Cable 6 feet USB Cable 4 feet AC Adaptor AD 121AN This Manual Basic EC420 Network Requirements An EC420 A connection to your cable TV system A subscription to cable modem service from your cable ...

Page 6: ...tection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions 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 t...

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