Cisco uBR904 Installation & Configuration Manual

Text of Cisco uBR904 User Guide:

• Cisco uBR904, CHAPTER Preparing for Installation 2-1 2 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 installati

• Safety Recommendations Cisco uBR904 Cable Modem Installation and Configuration Guide 2-2 Safety Recommendations The following guidelines will help to ensure your safety and protect the equipment. This list does not cover all potentially hazardous situations, so be alert. • The installation of your Cisco uBR904 cable modem should be in compliance with national and local electrical codes. In

• Cisco uBR904, Preparing for Installation 2-3 Safety with Electricity Safety with Electricity Follow these basic guidelines when working with any electrical equipment: • Disconnect all power and external cables before installing or removing a Cisco uBR904 cable modem. • Do not work alone when potentially hazardous conditions exist. • Never assume that power has been disconnected from a circuit; always check. • Do not perform any action that creates a potential hazard to people or makes the equipment unsafe. • Never install equipment that appears damaged. • Carefully examine your work area for possible h

• Cisco uBR904, Safety Recommendations Cisco uBR904 Cable Modem Installation and Configuration Guide 2-4 Following are guidelines for preventing ESD damage: • If you use an ESD wrist strap or ankle strap, ensure that it makes good skin contact and that the equipment end of the 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. FCC Requirements For Class A Equipment This equipment has been tested and found to comply with the limits for a Class A digital devi

• Preparing for Installation 2-5 CISPR 22 Requirements particular installation. If this equipment does cause harmful interference to radio or television 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: • Reorient or relocate the receiving

• Cisco uBR904, Site Requirements Cisco uBR904 Cable Modem Installation and Configuration Guide 2-6 AC Power The AC-input power supply in the Cisco uBR904 cable modem uses a power factor corrector that allows the Cisco uBR904 cable modem to operate on input voltage and frequency within the ranges of 100 to 240 VAC and 50/60 Hz. Refer to Table 1-1 in the chapter “Product Overview” for system power specifications, including input voltage and operating frequency ranges. Wiring and Cabling Following are guidelines for setting up the wiring and cabling at the installation site. When planning the location of the Cisc

• Cisco uBR904, Preparing for Installation 2-7 Wiring and Cabling If wires exceed recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you might want to consult experts in electrical surge suppression and shielding. Coaxial Cable Quality CATV coaxial cable quality can vary dramatically at each installation site. Poor insulation, improperly inst

• Cisco uBR904, Site Requirements Cisco uBR904 Cable Modem Installation and Configuration Guide 2-8 We recommend that you replace any cable that is in question to begin the installation with clean, two-way digital data transmission media. If the cable is of high-quality and was recently installed, replacing the connectors with high-quality connectors can also improve performance. 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 t

• Preparing for Installation 2-9 Personal Computer Hardware and Software Personal Computer Hardware and Software The Cisco uBR904 cable modem must be connected to a personal computer at the installation site. We recommend a personal computer with the following configuration: • A Pentium or 486 processor-based personal computer running the Windows 95 operating system. • Ethernet 10BaseT networ

• Cisco uBR904, Site Requirements Cisco uBR904 Cable Modem Installation and Configuration Guide 2-10 Figure 2-1 Cisco uBR904 Cable Modem Footprint and Outer Dimensions Site Environment Table 2-1 lists the operating and nonoperating environmental site requirements. The following ranges are those within which the Cisco uBR904 cable modem will continue to operate; however, a measurement that is approaching the minimum or maximum of a range indicates a potential problem. You can maintain normal operation by anticipating and correcting environmental anomalies before they approach a maximum operating range. • Operatin

• Cisco uBR904, Preparing for Installation 2-11 Preventive Site Configuration: Maintaining Normal Operation Table 2-1 Specifications for Operating and Nonoperating Environments Preventive Site Configuration: Maintaining Normal Operation Planning a proper location for the Cisco uBR904 cable modem is essential for successful system operation. Equipment placed too close together or inadequately ventilated can cause system overtemperature conditions. In addition, poor equipment placement can make system maintenance difficult. Following are pre

• Cisco uBR904, Tools for Installation Cisco uBR904 Cable Modem Installation and Configuration Guide 2-12 Power Considerations Follow these precautions and recommendations when planning power connections to the Cisco uBR904 cable modem: • Check the power at your site before installation and during installation to ensure that you are receiving clean power. Install a power conditioner if necessary. • 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 require

• Preparing for Installation 2-13 Making a Crossover Ethernet Cable Connection 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 plu

• Cisco uBR904, Configuration Information Cisco uBR904 Cable Modem Installation and Configuration Guide 2-14 Note Referring to the RJ-45 pinout in Table 2-2, proper common-mode line terminations should be used for the unused Category 5 UTP cable pairs 4/5 and 7/8. Common-mode termination reduces electromagnetic interference (EMI). To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the colored wires inside the ends, as shown in Figure 2-3. Figure 2-3 RJ-45 Cable Identification Examine the sequence of colored wires to determine the type of RJ-45 cable: • Straight-through—The colored wires are in the same sequence a

• Cisco uBR904, Preparing for Installation 2-15 Cisco uBR904 Cable Modem Installation Checklist Note If an error message is displayed on the uBR904, you can find its explanation in the 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 To assist you with your installation and to provide a historical record of what was done and by whom, use the Cisco uBR904 Cable Modem Installation Checklists in Table 2-3 and Table 2-4. Make a copy of this checklist and indicate when each

• Cisco uBR904, Site Log Cisco uBR904 Cable Modem Installation and Configuration Guide 2-16 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. Site log entries might include the following: • Installation progress—Make a copy of the Cisco uBR904 cable modem Installation Checklist and insert it into the site log. Make entries on the Installation Checklist as each procedure is completed. • Upgrades and removal/replacement procedures—Use the site log as a record of system maintenance and expansion history.

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