6DCM100...02 Made in Taiwan RECYCLABLE DCM-100 Ethernet Cable Modem Table of Contents
2
DCM-100 Ethernet Cable Modem
Thank you for choosing the D-Link DCM-100 digital, two-way DOCSIS 1.0-compliant Ethernet Cable Modem. The DCM-100 provides customers with high-speed access to the Internet through your cable TV (CATV) network connection. It works on any cable system that complies with MCNS DOCSIS specifications and provides a high-
bandwidth connection to the Internet. It downloads Web pages almost instantly, transfers files at exceptionally fast speeds, and delivers real-time video and music with unsurpassed quality. The DCM-100 digitizes data and sends it over the cable at up to 10.2 Mbps and can receive transmissions at up to 42.88 Mbps. To give you an idea of just how fast this is, digitized television quality video and audio are transmitted together at about 3 Mbps. The DCM-100 uses a standard RJ-45 port for a 10BASE-T connection to a computer or computer network. When properly configured these connections allow simultaneous data transfers to the Internet via the cable companys network.
Designed for versatility and performance, the Ethernet Cable Modem provides the following:
Product Features MCNS/DOCSIS 1.0 compliant DOCSIS 1.1 upgradeable from DOCSIS 1.0 by software Building MCNS MIB Frequency Agility DES Encryption and Decryption Automatic Signal Power Recognition/Adjustment Baseline Privacy Interface QPSK/16 QAM Upstream Modulation 64/256 QAM Downstream Modulation 3 DCM-100 Ethernet Cable Modem
Open the shipping carton and carefully remove all items. In addition to this User's Manual, ascertain that you have:
DCM-100 Cable Modem External power adapter Category 5 Ethernet cable Users Manual Quick Install Guide If any item is found missing or damaged, please contact your local reseller or D-Link directly at one of the offices listed at the rear of the manual for replacement.
This section identifies all the major external components of the device. Both the front and rear panels are shown below followed by a description of each panel feature. The indicator panel is described in detail in the next chapter.
The figure below shows the front panel of the device.
LED Indicator Panel - Refer to the next chapter, Understanding Indicators, for detailed information about each of the DCM-100s LED indicators.
The figure below shows the rear panel of the device.
4
DCM-100 Ethernet Cable Modem AC Power Connector - For the included power adapter, if you use a power adapter other than the one included with the product, please make sure it has a DC output of 12V/1A. Ethernet 10BASE-T Port - The 10BASE-T Ethernet port accepts Category 5 or better UTP cabling with an RJ-45 connector used to connect the DCM-100 to a LAN device (hub, switch, PC, etc.). Cable In - This jack is used to connect the DCM-100 to the splitter. This connection uses a standard coax cable which is the same cable used by your cable TV company.
In order for you to enjoy the benefits of your Cable Modem, your PC and TV must be properly connected to the cable TV wire. The following diagram illustrates a typical PC/TV installation. Cable TV Wall Outlet - This is the normal cable TV wall outlet installed by your cable company. If you plan to connect both your TV and your computer to the cable TV wire, the cable TV wall outlet should be connected to a splitter. Splitter - This unit, usually provided by your cable TV company during installation, splits the signal onto a second wire. The two wires coming out of the splitter can be connected to your TV (or set-top box), and the cable modem. NOTE: 1. If your cable TV company does not provide a splitter or you chose to buy your own, make sure you get one with sufficient frequency range (the range should be printed on the splitter). A range of 5 to 1000 MHz should be adequate. The splitter should provide EMI isolation. 2. Only one splitter should be placed between the point where the cable TV line enters the house and the Cable Modem/PC (see figure above). If you have multiple TVs, split the line between the first splitter and the TV, not the line between the splitter and the Cable Modem. 3. WARNING: Do not use amplifiers in the line leading to your Cable Modem. Not only do most amplifiers only amplify incoming signals, while your Cable Modem receives and sends signals, but they are also likely to distort cable modem signals. 5
DCM-100 Ethernet Cable Modem
Before setting up your Ethernet Cable Modem for the first time, take a few minutes to look over this section and familiarize yourself with the front panel LED indicators depicted below.
Power - This LED is lit red when the device is receiving power; otherwise, it is unlit. Link - This LED is lit green to indicate that a valid connection exists between the Ethernet port on the Cable Modem and your PC. If it is unlit, there is no valid connection. Act - A blinking green LED indicates that traffic activity is passing through your cable modem port. Status - This LED is lit green when the Ethernet cable is properly connected to your PC and a traditional coaxial cable is connected to your Cable Modem tuner. This indicates a successful connection with CMTS. The LED will now start quickly blinking as the DCM-100 attempts to lock a downstream frequency. If this is successful, the LED will begin to blink slowly. This indicates the modem is waiting for authentication. When the blinking stops and the LED remains steady, the Cable Modem is ready to transmit data through the CATV network. NOTE: If no lights come, check all of your connection to see if they are properly inserted.
You must allow at least 1 to 3 minutes to power up the first time because the DCM-100 must find and secure a connection. 6 DCM-100 Ethernet Cable Modem
You will need to establish an account with your local cable operator in order to access the Internet with this modem. They will assist you in setting up the modem to operate on their network. Then for your modem to communicate with the cable service, you will first need to be able to identify the cable modem. The Cable Media Access Control (CMAC) address is a unique number that is used for the purpose of identifying the modem on the network. The CMAC address is found on the rear panel of the modem. You may be required to provide this information to your cable service operator. For convenient reference you can write the CMAC address in the space provided below.
The capabilities and limitations of your computer equipment and configuration can affect the overall performance of your Internet connection. The DCM-100 Ethernet Cable Modem is designed to work with the following operating systems:
Windows 98/98 SE (Second Edition) Windows 2000 Windows ME (Millennium Edition) Active Ethernet Port or Nic Installed TCP/IP installed on all devices All computers interface that are connected to the modem must have either an active Ethernet interface or network interface card (NIC) installed. You will need to enable TCP/IP protocol on each computer. TCP/IP should already be installed in any computer with an active Ethernet interface. The instructions for installing TCP/IP vary depending on the type of system used. These instructions will be included with the NIC or discussed in the computers manual if your PC comes equipped with an Ethernet port. Your cable operator may have additional instructions for TCP/IP configuration that must be followed. 7 DCM-100 Ethernet Cable Modem
The installation of the DCM-100 Ethernet Cable Modem can be completed in a matter of minutes. Be careful to insure the cables are properly locked into position. Follow these steps (see the figure of the rear panel in Chapter Two):
1. Connect the coaxial TV cable to the DCM-100 jack labeled CABLE IN. 2. Connect the external power adapter into the connector labeled POWER and the other end to the electrical outlet. 3. Connect one end of the 10BASE-T Ethernet cable (Category 5 or better) to one of your PCs Ethernet ports and the other end into the DCM-200 connector labeled ETHERNET. Your setup should look something like this:
(DCM-100)
The DCM-100 Ethernet Cable Modem will work with the Ethernet port connected directly to a PC, hub, switch, or a Broadband Router ( i.e. DI-704,DI-713P) If you shift the Ethernet cable from one PC to another PC, the second PC will not be able to link onto the Internet until you reboot the DCM-100 by unplugging the power cord and then reinserting it into the DCM-100. 8
DCM-100 Ethernet Cable Modem
If the Ethernet Cable Modem has been properly set up it is unlikely that you should experience any problems with it under normal circumstances. However, we list here some possible solutions to problems that you might experience.
Cannot access the Internet or e-mail service. Check all connections. Make sure the cable TV line and the Ethernet (RJ-45) cable is securely connected at all points. Make sure the AC power adapter is plugged into the device and the power source. Check the LED indicators to see that the Power, Link and Status indicators are steadily lit for an Ethernet-connected device. Contact your cable service operator to verify that your account is up to date and that you have two-way service. There may be a problem with your NIC. Refer to the literature for the NIC to find a possible solution. The TCP/IP configuration for the computer may be incorrect. Double-check to see that these network settings comply with the instructions given by the cable service operator. Call your cable company to make sure they have given you the proper settings. Check your web browser configuration per ISP instruction. Status LED indicator blinks continuously. Check the cable line connection. If this is secure then there may be a weak signal coming from the central office. Report the problem to your cable operator if the cable connection appears to be OK. LED indicators appear to be normal but Internet access cannot be established Try to establish a new communication with your cable operators central office. This can be accomplished by powering off the computer and turning it back on. The TCP/IP configuration for the computer may be incorrect. The PC Link light is not green. The light is off. The modem is not detecting the Network Interface Card. Make sure the cables are firmly attached to the network card in the back of your computer and the modem as well. Try replacing the Ethernet cable or the network card with known working components. Run diagnostic program that came with your network card. If this is a card that we support, troubleshoot the NIC. Otherwise, contact the organization that installed or manufacturers the card. The power light is not on Check to make sure the power cable is firmly plugged into the cable modem. Also, make sure that the power converter is plugged into a functional socket. Change outlets with one you know to have power. Replace Cable Modem. 9 DCM-100 Ethernet Cable Modem Note: If your TVs picture quality is diminished when the Ethernet Cable Modem is in operation, you may need to contact your Cable TV operator to obtain a High Pass Filter. This should be placed between the splitter and the TV (or if you have a digital set-top box, between the splitter and the set-top box that precedes the TV).
D-Link provides free technical support for customers within the United States. U.S. customers can contact D-Link technical support through our web site, e-mail, or by phone. United States technical support is available Monday through Friday from 6:00 a.m. to 6:00 p.m. (PST). Web:
http://www.dlink.com Email:
support@dlink.com Phone:
949-788-0805 (option #4) If you are a customer residing outside of the United States, please refer to the list of D-Link locations that is included in this manual. Thank you for purchasing this product. We like to receive feedback from our customers concerning our products. Please take a moment to visit our web site. You can register your purchase on-line, learn more about the newest networking products, and let us know the things your new network has empowered you to do. 10 DCM-100 Ethernet Cable Modem
URL: www.dlink.com E-MAIL: tech@dlink.com, support@dlink.com 11
DCM-100 Ethernet Cable Modem
12 DCM-100 Ethernet Cable Modem
13 DCM-100 Ethernet Cable Modem
0#
# 1
# 1
0%$
(
%$
(0#
%
"
$ $1 $ $1 1
*1
14 DCM-100 Ethernet Cable Modem
" #0
0
0
"
0
$ *1
& .% / * 1 *1 1 $ * $ 1
*1 ! $ 1 $ %
1 $ *1! $ 1 1 * $
$ *1$$!$ 1 1$1
& $ *1 & $ 1
!1 $* %$ $ !$ 1
$ $ ! $ 1 $$ !$ 1 1 $
& 1 * $
* 1 %$ *1 &
$ $ *1 &
1 ! $ *1 & %$ ! & ! $ 1
$1! $ *1
No part of this publication may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from D-Link Corporation/D-Link Systems Inc., as stipulated by the United States Copyright Act of 1976.
CAUTION:
Any changes or modifications not expressly approved by the grantee of this device could void the
user's authority to operate the equipment. 15 DCM-100 Ethernet Cable Modem
Register by mail or online at http://www.dlink.com/sales/reg/
16 DCM-100 Ethernet Cable Modem
17 DCM-100 Ethernet Cable Modem 18