Cisco uBR904 Installation & Configuration Manual
Cable modem
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Also See for uBR904:
- Troubleshooting tips (62 pages) ,
- Installation manual (9 pages) ,
- Installing (10 pages)
Table of Contents
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Preparing for Installation
This chapter describes the equipment and site requirements for installing the Cisco uBR904
cable modem. The chapter contains the following sections:
•
Safety Recommendations
•
Site Requirements
•
Tools for Installation
•
Configuration Information
•
Cisco uBR904 Cable Modem Installation Checklist
•
Site Log
Before installing the Cisco uBR904 cable modem, you should consider the power and
cabling requirements that must be in place at the installation site, the equipment you will
need to install the Cisco uBR904 cable modem, and the environmental conditions the
installation site must meet to maintain normal operation. This chapter guides you through
the process of preparing for the Cisco uBR904 cable modem installation.
Note
The Cisco uBR7246 universal broadband router installed at the cable headend must
be properly configured to successfully install the Cisco uBR904 cable modem. Additional
configuration information is downloaded from the Cisco uBR7246 to the Cisco uBR904
cable modem.
We highly recommend that a cable headend technician be available, or on-call, to assist you
with troubleshooting Cisco uBR904 cable modem installations; especially during the early
field installations. Contact your cable service provider for more information.
C H A P T E R
Preparing for Installation 2-1
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Table of Contents
Related Manuals for Cisco uBR904
Summary of Contents for Cisco uBR904
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Page 1: Preparing For Installation
C H A P T E R Preparing for Installation This chapter describes the equipment and site requirements for installing the Cisco uBR904 cable modem. The chapter contains the following sections: • Safety Recommendations • Site Requirements • Tools for Installation •... -
Page 2: Safety Recommendations
Keep tools and Cisco uBR904 cable modem components away from walk areas. • Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught on the Cisco uBR904 cable modem. Fasten your tie or scarf and roll up your sleeves. •... -
Page 3: Safety With Electricity
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are improperly handled, can result in complete or intermittent system failures. The Cisco uBR904 cable modem consists of a printed circuit board that is housed in a metal enclosure. Electromagnetic interference (EMI) shielding and connectors are integral components of the enclosure. -
Page 4: Fcc Requirements
ESD strap is attached to an unfinished surface of the Cisco uBR904 cable modem. • Always place the Cisco uBR904 cable modem on an antistatic surface or in a static shielding bag. If you are returning the item to the factory, immediately place it in a static shielding bag. -
Page 5: Site Requirements
, and keep the area around the 23° to 113°F (-5° to 45°C) chassis as free from dust as is practical. The following sections address the site environment requirements for the Cisco uBR904 cable modem. Preparing for Installation 2-5... -
Page 6: Wiring And Cabling
Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the Cisco uBR904 cable modem, and can even create an electrical hazard by conducting power surges through lines and into equipment. -
Page 7: Coaxial Cable Quality
Cisco uBR904 cable modem for digital data transmission. Coaxial cable tolerances for the transmission of two-way digital data are much lower than the tolerances for the transmission of downstream-only video. -
Page 8: Distance Limitations
The size of your networks and the distances between connections on the CATV network can affect the successful installation of a Cisco uBR904 cable modem. When preparing a site for network connections to the Cisco uBR904 cable modem, you must consider several factors related to the cabling: •... - Page 9 Installing the Cisco uBR904 Cable Modem at the Headend You can mount the Cisco uBR904 cable modem on an equipment shelf at the headend provided that the rack dimensions allow you to secure the router to the shelf, and the overall configuration permits safe installation and access.
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Page 10: Site Environment
• Operating humidity range: 5 to 95%, noncondensing. • Airflow: Keep the back, sides, and bottom of the Cisco uBR904 cable modem clear of obstructions and away from the exhaust of other equipment. Caution To prevent chassis overheating, never install the Cisco uBR904 cable modem in an enclosed rack or room that is not properly ventilated or air conditioned. -
Page 11: General Precautions
Follow these general precautions when planning your equipment locations and connections: • We recommend keeping the Cisco uBR904 cable modem off the floor and out of any area that tends to collect dust. • Follow ESD prevention procedures to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure. -
Page 12: Power Considerations
Install proper grounding to avoid damage from lightning and power surges. Tools for Installation Each Cisco uBR904 cable modem chassis is fully assembled at the factory; no assembly is required. However, you will need the following tools and equipment to install the cable modem: •... - Page 13 Making a Crossover Ethernet Cable Connection The RJ-45 receptacle supports standard straight-through and crossover Category 5 UTP (RJ-45) cables. Cisco Systems does not supply Category 5 UTP cables; these cables are available commercially. Figure 2-2 shows the RJ-45 receptacle and plug. Table 2-2 lists the pinouts and signals for the RJ-45 receptacle.
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Page 14: Configuration Information
Configuration Information After you install the Cisco uBR904 cable modem, verify that all the hardware is operating properly, verify that the computer is configured for IP and DHCP services, and establish a connection to the headend, the Cisco uBR904 cable modem will be configured by software downloaded from the Cisco uBR7246 universal broadband router installed at the headend. - Page 15 Cisco uBR904 Cable Modem Installation Checklist If an error message is displayed on the uBR904, you can find its explanation in the Note Cisco Cable CPE Error Messages book, viewable online at www.cisco.com/univercd/cc/td/doc/product/cable/cab_modm/ubcmerrs.pdf . Cisco uBR904 Cable Modem Installation Checklist...
- Page 16 Console screen displays correct hardware configuration (displayed after system banner) Site Log A site log provides a historical record of all actions relevant to the Cisco uBR904 cable modem operation and maintenance. Keep the site log in a common place where anyone who performs tasks has access to it.
- Page 17 Site Log Table 2-5 Site Log Example Date Description of Action Performed or Symptom Observed Initials Preparing for Installation 2-17...
- Page 18 Site Log 2-18 Cisco uBR904 Cable Modem Installation and Configuration Guide...