TOSHIBA PCX1000 DOCSIS Cable Modem Owner’s Manual
- June 6, 2024
- Toshiba
Table of Contents
Toshiba DOCSIS Cable Modem
Owner’s Manual
PCX1000/PCX1100
Copyright 2000, Toshiba Corporation. All rights reserved. This manual may not be reproduced, in part or in whole, without the permission of Toshiba Corporation. The content of this manual is subject to change without notice in the future. Toshiba Corporation assumes no liability for damages resulting from the use of this product or the information contained in this manual.
Congratulations on Your Purchase!
Your new Toshiba DOCSIS Cable Modem will provide you with high-speed access to the Internet through your cable TV (CATV) network- accesses at a fraction of the time it takes traditional telephone modems. In addition, your service will be always connected. Those two features give you the information you want when you want it … and your telephone line is kept free.
Contact information
Support Information
Phone: 949-583-3223
Fax: 949-583-3597
e-mail:
cablesupport@networks.toshiba.com
Sales Information
Phone: 949-461-4840
e-mail:
cablesales@networks.toshiba.com
Web Page
http://networks.toshiba.com
Important Rules for Safe Operation
**** In addition to the careful attention devoted to quality standards in the
manufacture of your Toshiba DOCSIS Cable Modem, safety is a major factor in
the design of every product. However, safety is your responsibility, too.
This section lists important information that will help assure your enjoyment
and proper use of the Cable Modem and accessory equipment. Please read them
carefully before operating and using your modem.
Installation
Read and Follow Instructions – You should read all the safety and
operating instructions before operating the modem. Follow all operating
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 your dealer or local power
company.
Be Careful of Overloading – Do not overload wall outlets or extension
cords, as this can result in a risk of fire or electric shock. Overloaded AC
outlets, extension cords frayed power cords, damaged or cracked wire
insulation, and broken plugs are dangerous. They may result in a shock or fire
hazard. Periodically examine the cord, and, if its appearance indicates damage
or deteriorated insulation, have it replaced by your service technician.
Protect Power Cords – Route power-supply cords so that they are not
likely to be walked on or pinched by items placed upon or against them.
Pay particular attention to cords where they are attached to plugs and
convenience receptacles, and examine the point where they exit from the
product.
Check Ventilation – Slots and openings in the enclosure are provided for
ventilation to ensure the reliable operation of the product and to protect it
from overheating. Do not block or cover these openings. Never block these
openings by placing the product on a bed, sofa, rug, or another similar
surface. Never place this product near or over a radiator or heat register, or
any other 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 Toshiba, as they may cause electrical or fire hazards.
Use the Recommended AC Adaptor – You must use the Adaptor that comes with
your Toshiba Cable Modem.
Do Not Use Near Water – Do not use this product near water – for example,
near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or
near a swimming pool, and the like.
Do Not Place Near High-Temperature Source – for example near a steamer,
Kitchen range fire, and the like.
Use Caution in Mounting This Product – Do not place this product on an
unstable surface or support. The product may fall, causing serious injury to a
child or adult, as well as serious damage to the product.
Use Care in Moving Product-and-Cart Combinations – Quick stops,
excessive, force and uneven surfaces may cause the product-and-cart
combination to overturn.
Ground the Cable System – Be sure that the outside cable system is
grounded, so as to provide some protection against voltage surges and built-up
static charges.
Section 810 of the National Electric Code, ANSI/NFPA No. 70-1984 (Section 54
of the Canadian Electrical Code, Part 1) provides information with respect to
the proper grounding of the cable system.
Do not disconnect the RF cable from your Cable Modem while the power to
your modem is on.
USE
Unplug Power Before Cleaning – Do not use a liquid cleaner or an aerosol
cleaner. Use a damp cloth for cleaning.
Keep Objects Out of Openings – Never push objects 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. This
will prevent damage to the product due to lightning and power-line surges.
Take at least 10 seconds between DC plug off and on.
Service
Do Not Remove Covers – Do not attempt to service this product yourself,
as opening or removing covers may expose you to dangerous voltage or other
hazards. Refer all servicing to qualified service personnel.
Unplug this product from the wall outlet carefully, as the AC adaptor may
be hot. Refer Servicing to Qualified Service Personnel Under the Conditions
Listed Below
- When the power supply cord or plug is damaged.
- If liquid has been spilled or objects have fallen into the product.
- If the product has been exposed to rain or water.
- If the product does not operate normally by following the operating instructions.
- If the product has been dropped or the cabinet has been damaged.
- When the product exhibits a distinct change in performance, such as the inability to perform basic functions – this indicates a need for service.
Require Safety Check – Upon completion of any service or repairs to this product, ask the service technician to perform safety checks recommended by service point to determine that the product is in safe operating condition.
Overview
The modem provides you with high-speed data communications over the television
cable network by following the widely accepted DOCSIS/MCNS standards being
developed by the Multimedia Cable Network System (MCNS) consortium. Those
standards offer a combination of high performance and interoperability among
many of the cable system operators in North America.
How does a cable modem work?
As you know, 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 bandwidth, because of
their electrical characteristics. So what we do is connect a device called a
modem between the computer output and the phone line. The modem generates an
electrical wave whose strength and phase change in step with the highs and
lows of the computer’s digital output. It’s because of the “smoothness” of the
resultant signal that a higher data rate can be transmitted.
A cable modem MOdulates and DEModulates electrical signals in the same sense
that the telephone modem does. However, since coaxial cable can carry much
higher wave frequencies, cable modems are far more sophisticated. Their
internals can include a tuner, a bridge, a router, an encryption/decryption
device, an SNMP agent, and an Ethernet hub. Furthermore, none of the activity
caused by these circuits and codes disturbs your regular cable TV reception.
How does a cable modem connected to a computer?
The 10BASE-T Ethernet connection used in this Cable Modem is emerging as the
most popular. This connection has been used for years to allow business
computers to talk to each other in a LAN (Local Area Network).
The new DOCSIS standard may change this in the future. But for now, an
Ethernet card must be installed in your computer for the Cable Modem to work.
What is DOCSIS?
Data Over Cable Service Interface Specifications. DOCSIS defines interface
requirements for cable modems involved in high-speed data distribution over a
cable television network. On November 17, 1997, Cable Television Laboratories,
Inc. (Cable Labs) and its members established a formal path of certification
for cable modem equipment suppliers to obtain an interoperability seal for
their products based on the DOCSIS specification. This certification process
provides cable modem equipment suppliers with a fast, market-oriented method
for attaining cable industry acknowledgment of compliance with DOCSIS.
The seal is meant to provide the purchaser with a way to be confident that the
modem equipment to be purchased is compliant with the specification, and that
the equipment interoperates with DOCSIS products made by other vendors.
Getting Started
What’s in the Box?
Make sure that you’ve received the following items. If any item is missing or
damaged, contact your dealer immediately.
- Toshiba DOCSIS Cable Modem
- Ethernet Cable (6feet)
- AC Adaptor (AD-121AN)
- Stand
- This manual
Refer to the back cover for cable modem installation instructions.
Diagnostics
The Cable Modem has five status LEDs for diagnostics. You can monitor the LEDs
during installation and when you are using them.
Table 1 shows Cable Modem status LEDs and identifies what each LED light
means.
This table will help you to diagnose problems.
Function| Color|
Definition
---|---|---
Power| Green| – dark for power off
– solid for power on
Cable| Green| – dark for no downstream RF carrier present or power o- flashing
slowly for downstream RF carrier present and ranging in progress
– flashing fast for registration in progress
– solid for the Cable Modem registered and ready to transfer data
PC| Green| – dark for no Ethernet carrier present or power off
– solid for Ethernet carrier present
Data| Green| – dark for no user data going through the Cable Modem or power
off
– flashing for user data going through the Cable Modem
Test| Amber| – dark for initial self-test of the Cable Modem OK or power off
– flashing for initial self-test of the Cable Modem in progress or software
down loading of the Cable Modem in progress
– solid for self-test failure of the Cable Modem
Table 1 Status LEDs
How to Use the Stand
Please attach the stand to the bottom of the cable modem
Specifications
The Toshiba DOCSIS Cable Modem is DOCSIS/MCNS compliant.
Receiver
Physical Speed:| 30 Mbps (64QAM) / 43 Mbps (256QAM)
Symbol rate :| 5.056941 Msym/sec (64QAM); 5.360537 Msym/sec (256QAM)
Demodulation:| 64QAM / 256QAM
Bandwidth:| 6 MHz
Frequency range:| 88 MHz to 860 MHz (edge-to-edge) in 62.5 kHz steps
Input signal level:| -15dBmV to +15dBmV
Input impedance:| 75 ohms
Return loss:| > 6 dB from 88 MHz to 860 MHz
Transmitter
Physical Speed:| 320,640,1280,2560,5120Kbps(QPSK)
640,1280,2560,5120,10240Kbps(16QAM)
Symbol rate :| 160, 320, 640, 1280, 2560 ksym/sec
Modulation:| QPSK / 16QAM
Bandwidth:| 200, 400, 800, 1600, 3200 kHz
Frequency range:| 5 to 42 MHz (edge-to -edge), in 1Hz steps
Output signal level:| 8 dBmV to 58 dBmV (QPSK)
8 dBmV to 55 dBmV (16QAM)
PC Interface
10BASE-T:| 10Mbps; half-duplex
Power
AC adapter input:| 120VAC @ 60Hz
AC adapter output to cable modem:| 12VDC @1A
AC Power consumption:| 8 W (Typ)
Mechanical
Size:| 1.96 in. (width) x 8.07 in. (depth) x 5.96 in. (height)
Weight:| 2.1 lb
Environmental
Operating temperature:| 32 to 104 degrees Fahrenheit
Humidity:| 10 to 90 percent (non-condensing)
Storage temperature:| -4 to 140 degrees Fahrenheit
Safety:| UL1310, UL1950
Emission:| FCC part 15, class B
Accessory:| AC Adapter
Q & A
Q: How to connect the cable modem to the hub/switch?
A: Cable Modem is connected to the uplink port on the hub/switch. Or use a
cross-over Ethernet cable to connect the normal port on the hub/switch. Please
make sure that the hub/switch supports 10BASE-T. The cable modem supports only
10BASE-T.
Q: Do I need to turn off the cable modem?
A: You can leave the cable modem on all the time.
Q: How can I connect multiple PC to the cable modem?
A: You can use a hub or switch for a physical connection. The cable modem is
controlled by Cable Operator to allow how many PCs is available. Please
contact local Cable Operator to activate multiple PC under the cable modem.
Q: Where can I download the driver for the Cable modem?
A: The cable modem is a stand-alone device that has an Ethernet Port. All
workstations or hubs must have a 10 Base T Ethernet port or card to connect to
the cable modem. Since the cable modem is a stand-alone device, there is no
special driver needed on the workstation.
Q: How can I configure the modem and get monitoring information from the
modem?
A: The modem can only be configured and monitored by your cable operator.
FCC Compliance
This Toshiba DOCSIS Cable Modem has been tested and found to comply with the limits for a Class B personal computer and peripherals, pursuant to Part 15 of the 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 communications. However, there is no guarantee that interference will not occur in a particular installation. If this unit does cause harmful interference to radio or television reception, which can be determined by turning the unit off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or experienced radio/TV technician for help.
Glossary
10BASE-T
Unshielded, twisted pair cable with an RJ-45 connector, used with Ethernet
LAN. “10” indicates the speed (10 Mbps), “Base” refers to baseband technology,
and “T” means twisted pair cable.
Cable TV Coax
The cable allows wide bandwidth transmission over long distances. Coaxial
cable (coax) comprises an inner conductor surrounded by insulation. An outer
conductor wraps around the insulation, which, in turn, is covered by an outer
plastic covering.
Ethernet card
A plug-in circuit board is installed in an expansion slot of a personal
computer. The Ethernet card (sometimes called a Network Interface Card, or
NIC) takes parallel data from the computer, converts it to serial data, puts
it into a packet format, and sends it over the 10BASE-T LAN cable.
F connector
A type of coaxial connector labeled RF on the rear of the Toshiba Cable Modem,
connects the modem to the cable system.
Headend
The equipment, in the central office of the service provider, where the cable
signals originate.
Hybrid Fiber/ Coaxial (HFC) system
A system where the trunk of the cable plant is of fiber technology. Somewhere
near the subscriber’s home, the fiber is connected to a coaxial cable, and the
signal is converted
so that it’s compatible with the fiber media. The coaxial cable then runs
through the branches of the network and is finally dropped into the home.
HUB
A device is used to connect multiple computers to the cable modem.
Internet
A collection of interconnected networks used for worldwide computer-based
communications.
IP Address
A unique, 32-bit address is assigned to every device in a network. An IP
(Internet Protocol) address has two parts: 1) a network address and 2) a host
address. Each network is assigned an address by a government agency, and each
company administrator assigns an address to each host computer.
Modem registration
The process the Toshiba Cable Modem uses to make itself known to the headend
equipment. Once authorized by the router, the modem is assigned upstream and
downstream channels for data communication.
Network driver
A (software) file is included with the Ethernet card. The file is loaded on
the computer to allow the computer to recognize the Ethernet card. See
Ethernet Card.
RJ-45
Connector on the Toshiba Cable Modem, labeled 10BASE-T, that connects the
modem to a computer or to a HUB.
Subscriber
A computer user in the home who accesses a data service using the Toshiba
Cable Modem.
Subnet
A network subdivision. When subnetting is used, the IP (Internet Protocol)
address is divided into a subnet number and a host number. Hosts and gateways
identify the bits used for the network and subnet number through the use of a
subnet mask.
TCP/IP communication stack
Software in the subscriber computer that processes packets through the
communication layers. The subscriber configures the IP address for the
computer and the router default gateway in the software. The TCP/IP
communication stack handles all the communications with the subscriber’s
application.
Installing the Cable Modem
To avoid thermal problems, allow at least one inch spacing between the
ventilation holes and any object to either side of the unit. It’s best to have
no obstructions on top of the unit. The top of the unit should be at least two
inches from any obstruction.
Connect the cable modem using the following steps, referring to the figure
below.
- Connect the Cable TV coax to the input connector of a signal splitter.
- Connect a coaxial cable from one of the output connectors of the splitter to the input connector of the television set.
- Connect a coaxial cable from the other output connector of the splitter to the RF input connector on the cable modem rear panel.
- Connect the 10Base-T signal cable from your computer to the 10Base-T connector on the cable modem rear panel.
- Connect the AC adapter to the DC IN 12V 1A jack on the cable modem rear panel. Then plug in the AC adapter to the wall electrical outlet.
The power indicator LED on the modem front panel will light, if power is
present at the outlet. The modem will start operating once the power is
connected. No additional operator intervention is required. It will
automatically find the data channel, register, and connect to your computer.
Check the cable modem status. The front panel indicators (LEDs) show that the
cable modem is operating properly when they are in the following condition:
POWER – lit
CABLE – lit
PC – lit
DATA – flashing or not lit
TEST – not lit
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