Scientific Atlanta Network Card DPX100 User Guide

Webstar Cable Modem  
Model DPX100 Cable Modem  
Model DPX120 Cable Modem  
 
IMPORTANT RULES FOR SAFE OPERATION,continued  
Cleaning the Equipment  
Ventilation  
Before cleaning this equipment, unplug it from the  
electrical outlet. Use a damp cloth to clean this  
equipment. Do not use a liquid cleaner or an aerosol  
cleaner. Do not use a magnetic/ static cleaning device  
(dust remover) to clean this equipment.  
This equipment has openings for ventilation that protect  
it from overheating. To ensure the reliability of this  
equipment, do not obstruct the openings.  
• Do not place other equipment, lamps, books, or any  
other object on the top of or beside this equipment.  
Placement  
• Do not place this equipment in any of the locations that  
follow:  
Place this equipment in a location that is close enough  
to an electrical outlet to accommodate the length of the  
power cord. Place this equipment on a stable surface.  
The surface must support the size and weight of this  
equipment. Place this equipment either horizontally or  
vertically.  
- On a bed, sofa, rug, or similar surface  
- Over a radiator or a heat register  
- In an enclosure, such as a bookcase or equipment  
rack, unless the installation provides proper  
ventilation  
Overloading  
WARNING:  
Avoid personal injury and damage to this  
equipment. An unstable surface may cause  
this equipment to fall.  
Do not overload electrical outlets, extension cords, or  
integral convenience receptacles, as this can result in a  
risk of fire or electric shock. For equipment that  
requires battery power or other sources to operate,  
refer to the operating instructions for that equipment.  
Accessories  
Do not use accessories with this equipment unless  
recommended by your cable service provider.  
3
 
IMPORTANT RULES FOR SAFE OPERATION,continued  
Object and Liquid Entry  
Power Cord Protection  
Never push objects of any kind into this product  
through openings as they may touch dangerous voltage  
points or short out parts that could result in a fire or  
electric shock. Do not expose this equipment to liquid or  
moisture. Do not place this equipment on a wet surface.  
Do not spill liquids on or near this equipment.  
Arrange all power cords so that people cannot walk on  
the cords, place objects on the cords, or place objects  
against the cords, which can damage the cords. Pay  
particular attention to cords that are at plugs, at  
electrical outlets, and at the places where the cords exit  
the equipment.  
Power Sources  
Lightning and Power Surges  
Plug your equipment into a surge protector in order to  
reduce the risk of damage from lightning strikes and  
power surges. If you are unsure of the type of surge  
protector to use, contact your cable service provider.  
A label on the AC power adapter which is supplied  
with this equipment, indicates the correct power source  
for this equipment. Operate this equipment only from  
an electrical outlet that has the voltage and frequency  
that the label indicates.  
Servicing  
If you are unsure of the type of power supply to your  
residence, consult Scientific-Atlanta, Inc., or your local  
power company.  
Do not open the cover of this equipment. If you open the  
cover, your warranty will be void. Refer all servicing to  
qualified personnel only. Contact your cable service  
provider for instructions.  
Grounding  
This equipment may be provided with a three-prong  
plug. Properly ground (earth) this equipment by  
inserting the plug into a grounded electrical, three-  
socket outlet. If you are unable to insert this plug fully  
into the outlet, contact an electrician to replace your  
obsolete outlet.  
4
 
IMPORTANT RULES FOR SAFE OPERATION,continued  
Checklist  
Damage that Requires Service  
Equipment Checklist  
For damage that requires service, unplug this equipment  
from the electrical outlet. Contact your cable service  
provider when any of the following situations occur:  
Before you install your cable modem, check the  
items in the carton. The carton contains the  
following items, except as noted:  
• There is damage to the power cord or plug  
• Liquid enters the equipment  
One WebSTAR™ Cable Modem  
One Ethernet cable (CAT5/ RJ-45)  
• A heavy object falls on the equipment  
• There is exposure to rain or water  
One USB cable (not included with all  
models)  
• Operation is not normal (the instructions describe the  
proper operation)  
One Power Adapter with power cord  
• If you drop this equipment, or damage the cabinet of  
this equipment  
One CD-ROM containing the users guide  
and the USB drivers  
• If this equipment exhibits a distinct change in  
performance  
Note: You will need an optional cable  
signal splitter and additional standard RF  
coaxial cable if you want to connect a VCR,  
a Digital Home Communications Terminal  
(DHCT) or a set-top converter, or a TV to  
the same cable connection as your cable  
modem.  
Upon completion of any service or repairs to this  
equipment (cable modem), ask the service technician to  
perform safety checks to determine that the equipment  
is in proper operating condition.  
5
 
Overview  
WebSTAR Cable Modem Features  
Contents  
Overview ............................................................................ 6  
Welcome to the world of high-speed Internet access.  
Your new WebSTAR Model DPX100 or Model DPX120  
Cable Modem offers the following outstanding features:  
Before You Begin .............................................................. 7  
System Requirements ...................................................... 8  
WebSTAR Cable Modem Front Panel........................... 9  
WebSTAR Cable Modem Back Panel .......................... 10  
Modem Installation ......................................................... 11  
TCP/ IP Configuration .................................................... 12  
USB Driver Installation ................................................. 16  
Troubleshooting ............................................................. 19  
Tips for Improved Performance .................................. 21  
Detailed Front Panel Indicator Functions .................... 22  
Notices .............................................................................. 25  
United States FCC Compliance ...................... Back cover  
Two-way, high-speed data rates much faster than  
56K analog modems, ISDN, or DSL  
Plug and Play operation for easy setup and  
installation  
10/ 100BaseT Ethernet or USB connection  
Clear LED display  
Vertical or horizontal placement  
CableLabs Data Over Cable System Interface  
Specifications (DOCSIS) certification (for the Model  
DPX100), and Euro-DOCSIS certification (for the  
Model DPX120) ensures interoperability with  
other certified cable modems and certified cable  
service providers  
Cable modem software can be upgraded  
automatically by your cable service provider  
6
 
Before You Begin  
Contacting Your Local Cable Service Provider  
You must also give your cable service provider  
the following information:  
You need to set up an Internet access account with  
your local cable service provider in order to use your  
cable modem. When you contact your cable service  
provider, verify the following conditions:  
The serial number of the modem  
The Media Access Control (MAC) address of  
the modem  
Does the cable service to your home support  
two-way, DOCSIS or Euro-DOCSIS-compatible  
cable modem access? If your cable service provider  
does not provide two-way service, this modem will  
not be able to communicate with your cable service  
providers Internet access service.  
These numbers appear on a black and white bar code  
label located on the bottom of the cable modem. The  
serial number consists of a series of alpha-numeric  
characters preceded by S/N. The MAC address  
consists of a series of alphanumeric characters  
preceded by MAC. The following illustration shows  
a sample bar code label.  
Do you have an active RF coaxial cable  
connection near your PC? If your current  
cable input is not conveniently located near  
your PC, your cable service provider can install  
one.  
Do you have an Internet access account? Your  
cable service provider will set up your Internet  
access account, and will become your Internet  
Service Provider (ISP) to enable you to send  
and receive e-mail, access the World Wide Web,  
and receive other Internet services.  
T9958  
7
 
System Requirements  
Introduction  
System Requirements for a USB Connection  
• A PC with a Windows 98/ 98SE/ ME/ 2000  
or XP operating system  
This section provides hardware and software  
requirements.  
• A master USB port installed in your PC  
Minimum System Requirements for PCs  
A PC with a Pentium MMX 133 processor or  
greater  
Selecting a Location for Your Modem  
Select the location for your workspace and  
consider these recommendations:  
32 MB of RAM  
Netscape or Internet Explorer  
CD-ROM drive  
• Position your PC and cable modem so that they are  
located near your cable input. There should be  
plenty of room to guide the cables away from the  
modem without straining or crimping them.  
Minimum System Requirements for Macintosh  
MAC OS 7.5  
• Air flow around the cable modem should not be  
restricted.  
32 MB of RAM  
System Requirements for an Ethernet Connection  
• Read this users guide thoroughly before  
installing the cable modem.  
A PC with Windows 95 operating system  
(or later) with TCP/ IP protocol installed, or an  
Apple Macintosh computer with TCP/ IP  
protocol installed  
• An active 10/ 100BaseT Ethernet network  
interface card (NIC) installed in your PC  
8
 
WebSTAR Cable Modem Front Panel  
Front Panel Indicators  
1
2
POWER  
PC  
Illuminates solid green to indicate that power is being applied to the cable  
modem  
Illuminates solid green to indicate that an Ethernet/ USB carrier is  
present  
Blinks to indicate that Ethernet/ USB data is being transferred between  
the PC and the cable modem  
3
4
DATA  
Blinks to indicate that data is being transferred between the modem and  
the cable network  
CABLE  
Illuminates solid green when the modem is registered on the network and  
fully operational. This indicator blinks to indicate one of the following  
conditions:  
1
2
3
4
The cable modem is booting up and not ready for data  
The cable modem is scanning the network and attempting to register  
The cable modem has lost registration on the network and will continue  
blinking until it registers again  
Blinks very slowly (once every 5 seconds) to indicate that Cable Modem  
Access Protection is enabled  
Note: Once the cable modem is successfully registered on the network, the  
POWER and CABLE indicators illuminate continuously to indicate that the  
cable modem is active and fully operational.  
See Detailed Front Panel Indicator Functions later in this guide for more  
T9916  
information on front panel indicator functions.  
9
 
WebSTAR Cable Modem Back Panel  
Back Panel Components  
1 POWER  
Connects the cable modem to the DC output of the AC power  
adapter that is provided with your cable modem  
Note: Only use the power cord and the AC power adapter that are  
provided with your cable modem.  
1
2
2 RESET  
Reset-to-Default button (Factory Reset)  
CAUTION:  
3
4
This button is for maintenance purposes only. Do not use!  
3 ETHERNET RJ-45 Ethernet port connects to the Ethernet port on your PC  
4 USB  
12 Mbps USB port connects to the USB port on your PC  
5 CABLE IN  
F-Connector connects to an active cable signal from your cable  
service provider  
CAUTION:  
Do not connect your PC to both the Ethernet and USB ports at  
5
the same time.  
Note: You can connect two separate PCs to the cable modem at  
the same time by connecting one to the Ethernet port and one to  
the USB port. See Modem Installation next in this guide.  
T9917  
10  
 
Modem Installation  
Installing the Modem  
Follow these steps for proper installation.  
1. Power down your PC and unplug it from the power source.  
2. Connect the active RF coaxial cable to the CABLE IN  
connector. Use an optional cable signal splitter to add a  
TV, a DHCT or set-top converter, or a VCR.  
The following diagram illustrates one of the  
various connection options that are available  
to you.  
RF  
Cable  
3. Connect your PC to either the Ethernet port or the USB  
port using the appropriate data cable. You can connect  
two separate PCs to the cable modem at the same time  
by connecting one to the Ethernet port and one to the  
USB port.  
4. Insert the AC power adapter cord into the DC power  
connector on the back of the cable modem, and then  
plug the power adapter into an AC power source.  
Cable  
Splitter  
CH+  
V
O
L
ñ
V
O
L
+
MENU  
GUIDE  
INFO  
A/B  
POWER  
CHñ  
B
Y
P
A
S
S
Power  
RF  
Cables  
Supply  
Cable-ReadyTV,  
VCR, or Set-Top  
Converter  
Power Supply  
5. The cable modem will then begin an automatic search  
to locate and sign on to the broadband data network.  
This process may take up to 5 minutes. The modem  
will be ready for use when the CABLE indicator on the  
front panel stops blinking and illuminates continuously.  
6. Plug in and power up your PC.  
PC  
Ethernet  
Cable  
7. Choose one of the following options:  
T9918  
To configure the TCP/ IP protocol for Ethernet—  
see TCP/IP Configuration.  
Note: Professional installation may be available.  
Contact your local cable service provider for  
further assistance.  
To install the USB Drivers for USB—see USB  
Driver Installation.  
11  
 
TCP/IP Configuration  
Introduction  
1. Click Start, select Settings, and choose  
This section contains instructions for configuring  
the WebSTAR cable modem to run in Windows  
or Macintosh environments. In addition, TCP/ IP  
protocol in a Windows environment is different  
for the Windows 95/ 98/ ME/ and 2000 versions.  
Follow the appropriate instructions in this section  
to configure the TCP/ IP protocol.  
Control Panel. The Control Panel window opens.  
2. In the Control Panel window, double-  
click the Network icon. A list of installed  
network components appears.  
3. Under the Configuration tab, read the list of  
installed network components to verify your  
PC contains the TCP/ IP protocol.  
Windows 95/98/ME  
Follow the instructions in this section to configure  
the WebSTAR cable modem for TCP/ IP in a  
Windows 95/ 98/ ME environment.  
4. Does your PC have the TCP/ IP protocol?  
• If yes, go to step 8.  
• If no, click Add.  
5. Click Protocol, and then click Add.  
Configuring the TCP/IP Protocol for Windows 95/98/ME  
6. In the Manufacturers list, click Microsoft.  
Before you install your cable modem, you need to  
have either an Ethernet Network Interface Card  
(NIC) with TCP/ IP communications protocol, or a  
USB network interface installed on your system.  
7. In the Network Protocols list, click TCP/IP, and  
then click OK.  
8. Click the TCP/IP Ethernet Adapter protocol,  
and then choose Properties.  
Follow these steps to install and configure the  
TCP/ IP protocol for Windows 95/ 98/ ME  
environments.  
9. Click the IP Address tab, and then select  
Obtain an IP address automatically.  
12  
 
TCP/IP Configuration, continued  
1. Click Start, and then click Run to open the  
10. Click the Gateway tab and verify that these  
fields are empty. If they are not empty,  
highlight and delete all information from the  
fields.  
Run window.  
2. Type winipcfg in the Open field, and click  
OK to execute the winipcfg command. The IP  
Configuration window opens.  
11. Click the DNS Configuration tab, and then  
select Disable DNS.  
3. Click the down arrow to the right of the top  
field, and select the Ethernet adapter that is  
installed on your PC. The IP Configuration  
window displays the Ethernet adapter  
information.  
12. Click OK. The Copying Files window opens.  
13. When the system finishes copying the files,  
click OK.  
14. Close all networking windows.  
15. When the System Settings Change dialog box  
4. Click Release, and then click Renew. The IP  
Configuration window displays a new IP  
address.  
opens, click YES to restart your computer.  
Renewing the IP Address for Windows 95/98/98SE/ME  
5. Click OK to close the IP Configuration window.  
If your PC cannot access the Internet after the  
cable modem is online, it is possible that your  
PC did not renew its IP address. Follow these steps  
to renew the IP address on your PC.  
Note: If you have Windows 2000, Windows  
NT, or Windows XP, consult your Users  
Manual for the procedure for renewing the IP  
address on your PC.  
13  
 
TCP/ IP Configuration, continued  
Windows 2000  
6. When the Local Network window opens, click  
Follow these steps to install and configure the  
TCP/ IP protocol for Windows 2000 environments.  
Yes to restart your computer.  
1. Click Start, select Settings, and choose  
Network and Dial-up Connections. The  
Network and Dial-up Connections window  
opens.  
Macintosh  
Follow these steps to verify that the TCP/ IP  
communications protocol and an Ethernet device  
are installed on your Macintosh computer.  
2. In the Network and Dial-up Connections  
window, double-click the Local Area  
Connection icon. The Local Area Connection  
Status window opens.  
1. Click the Apple icon in the upper left corner  
of the Finder. Scroll down to Control Panels,  
and then click TCP/IP.  
2. Click Edit on the Finder (gray bar) at the top  
of the screen. Scroll down to the bottom of the  
menu, and then click User Mode.  
3. In the Local Area Connection Status  
window, click Properties. The Local Area  
Connection Properties window opens.  
3. Click Advanced in the User Mode window,  
4. In the Local Area Connection Properties  
window, click Internet Protocol (TCP/IP), and  
then click Properties. The Internet Protocol  
(TCP/ IP) Properties window opens.  
and then click OK.  
4. Click the Up/Down selector arrows located  
to the right of the Connect Via section of the  
TCP/ IP window, and then click Using DHCP  
Server.  
5. In the Internet Protocol (TCP/ IP) Properties  
window select both Obtain an IP address  
automatically, and Obtain DNS server  
address automatically; then, click OK.  
14  
 
TCP/IP Configuration, continued  
8. With the power off, simultaneously press  
and hold down the Command (Apple),  
Option, P, and R keys on your keyboard.  
Keeping those keys pressed down, power on  
your Macintosh. The computer will start, and  
you will hear the Apple chime; do not release  
these keys.  
5. Click Options in the TCP/ IP window, and  
then click Active in the TCP/ IP Options  
window.  
Note: In some cases, the Load only when  
needed option will not appear. If it appears,  
select the option. A check mark appears in the  
option.  
9. Continue pressing these keys for up to  
three chimes, then release the keys and  
allow the computer to restart.  
6. Verify that the Use 802.3 option located in  
the upper right-hand corner of the TCP/ IP  
window is unchecked. If there is a check  
mark in the option, deselect the option, and  
then click Info in the lower left-hand corner.  
10. When your computer fully reboots, repeat  
steps 1 through 7 to verify that all TCP/ IP  
settings are correct. If your computer still does  
not have a Hardware Address, contact your  
authorized Apple dealer or Apple technical  
support center.  
7. Is there a Hardware Address listed in this  
window?  
If yes, click OK. To close the TCP/IP  
Control Panel window, click File, and  
then scroll down to click Close. You have  
completed this procedure.  
If no, you must power down your  
Macintosh.  
15  
 
USB Driver Installation  
Introduction  
3. Click Next.  
This section contains instructions for installing the  
WebSTAR cable modem USB drivers if your PC is  
equipped with a USB interface and a Windows  
98/ 98SE/ ME/ 2000/ or XP operating system. The USB  
driver installation procedures are different for each  
operating system. Follow the appropriate instructions  
in this section for your operating system. If your PC  
does not have a USB interface, you may skip this section.  
4. In the Add New Hardware Wizard window,  
select Search for the best driver for your  
device (Recommended), then click Next.  
5. In the Add New Hardware Wizard window,  
select CD-ROM drive, then click Next.  
6. In the Add New Hardware Wizard window,  
select The updated driver (Recommended),  
then click Next.  
Windows 98/98SE/ME  
Follow these steps to install the WebSTAR cable  
modem USB drivers for Windows 98/ 98SE/ and  
ME environments.  
7. In the Add New Hardware Wizard window,  
click Next. The Copying Files window  
opens. After 10 to 20 seconds have passed, the  
Add New Hardware Wizard window reopens.  
1. Insert the USB Cable Modem Driver  
Installation disk into the CD-ROM drive of  
your PC.  
8. Click Finish. The System Settings Change  
window opens. The driver installation is  
complete.  
2. Wait until the Power and Cable indicators  
on the cable modem illuminate solid green;  
then, plug the USB cable into the USB port  
on your PC. The Add New Hardware Wizard  
window opens.  
9. Click Yes to restart your computer.  
16  
 
USB Driver Installation, continued  
Windows 2000  
6. In the Found New Hardware Wizard window,  
click Next. The system searches for the driver  
file for your hardware device.  
Follow these steps to install the WebSTAR cable  
modem USB Drivers for Windows 2000  
environments.  
7. After the system finds the USB driver, the  
Digital Signature Not Found window opens  
displaying a confirmation message to  
1. Insert the USB Cable Modem Driver  
Installation Disk into the CD-ROM driver of  
your PC.  
continue the installation. Click Yes to continue  
the installation. The Found New Hardware  
Wizard window reopens with a message that  
the installation is complete.  
2. Wait until the Power and Cable indicators on  
the cable modem illuminate solid green; then,  
plug the USB cable into the USB port on your  
PC. The Found New Hardware Wizard  
window opens.  
8. Click Finish to close the Found New Hardware  
Wizard window.  
3. In the Found New Hardware Wizard window,  
click Next.  
4. In the Found New Hardware Wizard window,  
select Search for a suitable driver for my  
device(recommended), then click Next.  
5. In the Found New Hardware Wizard window,  
select CD-ROM drives, then click Next.  
17  
 
USB Driver Installation, continued  
Windows XP  
5. In the Hardware Installation window, click  
Follow these steps to install the WebSTAR cable  
modem USB drivers for Windows XP  
environments.  
Continue Anyway to continue the installation.  
6. The Found New Hardware Wizard window  
reopens with a message that the installation is  
complete.  
1. Insert the USB Cable Modem Driver  
Installation disk into the CD-ROM drive of  
your PC.  
7. Click Finish to close the Found New Hardware  
Wizard window.  
2. Wait until the Power and Cable indicators on  
the cable modem illuminate solid green; then,  
plug the USB cable into the USB port on your  
PC. The Found New Hardware Wizard  
window opens.  
3. In the Found New Hardware Wizard window,  
select Install from a list or specific location  
(Advanced), then click Next.  
4. In the Found New Hardware Wizard window,  
select Search removable media (floppy,CD-  
ROM), and then click Next. The Hardware  
Installation window opens.  
18  
 
Troubleshooting  
Frequently Asked Questions  
Q. Once my cable modem is connected, how do I  
access the Internet?  
Q. What if I dont subscribe to cable TV?  
A. If cable TV is available in your area, data service  
may be made available with or without subscribing to  
cable TV service. Contact your local cable service  
provider for complete information on cable services,  
including high-speed Internet access.  
A. Your local cable service provider becomes your  
Internet Service Provider (ISP), offering a wide range of  
services including e-mail, chat, news, and information  
services. Your cable service provider will provide the  
software you will need.  
Q. How do I arrange for installation?  
Q. Can I watch TV and surf the Internet at the same  
time?  
A. Professional installation from your cable service  
provider may be provided. A professional installation  
ensures proper cable connection to the modem and to  
your PC, and ensures proper configuration of all  
hardware and software settings. Contact your cable  
service provider for more information about installa-  
tion.  
A. Absolutely! If you subscribe to cable television  
service, you can watch TV and use your cable modem  
at the same time by connecting your TV and your cable  
modem to the cable network using an optional cable  
signal splitter.  
Q. Can I run more than one device on the  
modem?  
Q. How does the WebSTAR Cable Modem connect to  
my computer?  
A. Yes—a single WebSTAR cable modem will support  
up to 31 Ethernet devices utilizing a user-supplied  
Ethernet hub, that you can purchase at your local PC or  
office supply retailer. Another user at your location can  
simultaneously connect to the USB port on the cable  
modem. Contact your cable service provider for further  
assistance.  
A. The cable modem connects to the USB port or the  
10/ 100BaseT Ethernet port on your PC. If your PC is  
not equipped with an Ethernet interface, an Ethernet  
card is available from your local PC or office supply  
retailer, or from your cable service provider.  
19  
 
Troubleshooting, continued  
Common Troubleshooting Issues  
The modem does not register a cable  
connection.  
The modem does not register an Ethernet  
connection.  
The modem works with a standard,  
75-ohm, RF coaxial cable. If you are using a  
different cable, your cable modem will not  
function properly. Contact your cable service  
provider to determine whether you are using  
the correct cable.  
Even new computers do not always have  
Ethernet capabilities. Be sure to verify that  
your computer has a 10/ 100BaseT Ethernet card  
and that the Ethernet driver software is  
properly installed. If you purchase and install  
an Ethernet card, follow the installation  
instructions very carefully.  
Verify that you have followed the  
procedure for Renewing the IP address  
for Windows 95/98/98SE and ME PCs  
earlier in this guide.  
The modem does not register an Ethernet connection  
after connecting to a hub.  
If you are connecting multiple PCs to the cable modem,  
you should first connect the modem to the up-link  
port of the hub. The LINK LED of the hub will  
illuminate continuously.  
Your NIC card or USB interface may be  
malfunctioning. Refer to the trouble-  
shooting information in the NIC or  
USB documentation.  
20  
 
Tips for Improved Performance  
Check and Correct  
Verify that your TCP/ IP is properly installed  
and configured if you are using the Ethernet  
connection.  
If your cable modem does not perform as  
expected, the following tips may help. If you need  
further assistance, contact your cable service  
provider.  
Verify that you have followed the procedure for  
Installing the USB Drivers for Windows 98  
98SE/ME/2000/XP, earlier in this guide, if you  
are using the USB connection.  
Verify that the plug to your cable modem AC  
adapter is properly inserted into an electrical  
outlet.  
Verify that you have called your cable service  
provider and given them the serial number  
and MAC address of your cable modem.  
Verify that your cable modem AC adapter is  
not plugged into an electrical outlet that is  
controlled by a wall switch. If the electrical  
outlet is controlled by a wall switch, make sure  
the switch is in the ON position.  
If you are using a cable signal splitter so  
that you can connect the cable modem to  
other devices, remove the splitter and  
reconnect the cables so that the cable  
modem is connected directly to the cable input.  
If the cable modem now functions properly,  
the cable signal splitter may be defective and  
may need to be replaced.  
Verify that the Power and Cable indicators on  
the front panel of your cable modem are  
illuminated.  
Verify that all cables are properly connected,  
and that you are using the correct cables.  
Verify that your cable service is active and that  
it supports two-way service.  
21  
 
Detailed Front Panel Indicator Functions  
This chart illustrates the sequence of steps and the corresponding appearance of the cable modem front panel indicators  
during power up, calibration, and registration on the network. Use this chart to troubleshoot the power up, calibration,  
and registration process of your cable modem.  
Front Panel Indicators During Initial Power Up, Calibration, and Registration  
Step  
1
2
3
4
5
6
7
8
Front Panel Power  
Self  
Test  
Downstream Downstream  
Requesting  
IP Address  
Registration  
Completed  
Ranging  
ON  
Registering  
ON  
Indicator Up  
Scan  
Signal Lock  
1 POWER ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
or  
BLINKING  
ON  
or  
BLINKING  
ON  
or  
BLINKING  
ON  
or  
BLINKING  
ON  
or  
BLINKING  
2
3
PC  
OFF  
OFF  
OCCASIONAL OCCASIONAL OCCASIONAL  
DATA  
ON  
ON  
OFF  
OFF  
ON  
BLINKING  
BLINKING  
BLINKING  
SLOW  
BLINKING  
1 time per second  
SLOW  
BLINKING  
1 time per second 4 times per second  
RAPID  
BLINKING  
MOMENTARY  
ON  
4 CABLE OFF  
OFF  
ON  
T9919  
22  
 
Detailed Front Panel Indicator Functions, continued  
This chart illustrates the appearance of the cable modem front panel indicators during normal operations.  
Front Panel Indicators During Normal Operations  
Step  
9
Front Panel  
Indicator  
Normal Operations  
(Bold denotes normal)  
1 POWER ON  
2
PC  
ON - When a single device is connected to either the Ethernet or USB port and no data is being  
sent to or from the modem.  
BLINKS - When one device is connected and data is being transferred between the consumer  
equipment and the modem.  
OFF - When no devices are connected to either the Ethernet or USB ports.  
Note: With both Ethernet and USB devices connected to the modem at the same time, when data is being  
transferred through only one of the devices (Ethernet or USB), the indicator will illuminate continuously.  
Whenever data is being sent through both data ports (Ethernet and USB) simultaneously, the indicator will  
blink as described above.  
3
DATA  
BLINKS - To indicate data is being transferred between the modem and the network.  
4 CABLE ON  
T9920  
23  
 
Detailed Front Panel Indicator Functions, continued  
This chart describes the appearance of the cable modem front panel indicators during special conditions to show that  
cable modem access protection is enabled, or that you have been denied network access.  
Front Panel Indicators During Special Conditions  
Front Panel  
Cable Modem Access Protection Enabled  
Network Access Denied  
Indicator  
SLOW BLINKING  
1 POWER  
OFF  
OFF  
OFF  
1 time per second  
SLOW BLINKING  
1 time per second  
2
3
4
PC  
SLOW BLINKING  
1 time per second  
DATA  
CABLE  
VERY SLOW BLINKING  
SLOW BLINKING  
1 time per second  
1 time every 5 seconds  
T9921  
24  
 
Notices  
Trademarks  
Software Use Notice  
Scientific-Atlanta and the Scientific-AtlantaARCs logo  
The software described in this document is copyrighted and  
furnished to you under a license agreement. You may only use  
or copy this software in accordance with the terms of your  
license agreement.  
are registered trademarks of Scientific-Atlanta, Inc.  
WebSTAR and “Bringing the Interactive Experience Home”  
are trademarks of Scientific-Atlanta, Inc.  
Other trademarks listed herein are the property of their  
respective owners.  
Firmware Use Notice  
The firmware in this equipment is copyrighted. You may only  
use the firmware in the equipment in which it is provided. Any  
reproduction or distribution of this firmware, or any portion of  
it, without express written consent is prohibited.  
Disclaimer  
Scientific-Atlanta, Inc. assumes no responsibility for errors or  
omissions that may appear in this guide. Scientific-Atlanta  
reserves the right to change this guide at any time without  
notice.  
Documentation Copyright Notice  
© 2002 Scientific-Atlanta, Inc. All rights reserved.  
Printed in the United States of America.  
Information in this document is subject to change without  
notice. No part of this document may be reproduced in any form  
without the express written permission of Scientific-Atlanta, Inc.  
25  
 
United States FCC Compliance  
FCC Declaration of Conformity  
This equipment has been tested and found to comply with the  
applicable limits of Part 15 of FCC Rules. These limits are  
designed to provide reasonable protection 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 or TV 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:  
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.  
WebSTAR Cable Modem  
Model DPX100  
Scientific-Atlanta, Inc.  
5030 Sugarloaf Parkway  
Lawrenceville, Georgia 30044 USA  
• Increase the separation between the equipment and  
receiver  
Telephone: 770-236-1077  
• Connect the equipment into an outlet on a circuit different  
from that to which the receiver is connected  
Canada EMI Regulation  
This Class B digital apparatus meets all requirements of the  
Canadian Interference Causing Equipment Regulations.  
• Consult your cable company or an experienced radio/ TV  
technician for help  
Any changes or modifications not expressly approved by  
Scientific-Atlanta could void the users authority to operate  
the equipment.  
Cet appareil numérique de la classe B respecte toutes les  
exigences du Réglement sur le matériel brouilleur du Canada.  
United States: Scientific-Atlanta, Inc., 5030 Sugarloaf Parkway,  
Box 465447, Lawrenceville, GA 30042; Tel: 770-236-5000;  
TWX: 810-799-4912; Telex: 0542898  
Europe: Scientific-Atlanta Europe GmbH, Westerbachstrasse 28-32,  
61476 Kronberg, Germany; Tel: 49-6173-928-000  
Asia-Pacific: Scientific-Atlanta (Singapore) Pte. Ltd., 1 Claymore Drive,  
#08-11 Orchard Towers, Singapore 229594; Tel: 65-733-4314  
Latin America: Scientific-Atlanta Argentina S.A., C. Pellegrini 1149 Piso 11o  
Capital Federal 1011 Buenos Aires, Argentina; Tel: 54-11-4325-2800  
www.scientificatlanta.com  
Important: 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.  
© 2002 Scientific-Atlanta, Inc. All rights reserved.  
Printed in USA  
January 2002 Part Number 749610 Rev A  
26  
 

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