Instruction/ maintenance manual of the product UBR904 Cisco Systems
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CHAPTER Preparing for Instal lation 2-1 2 Prepar ing f or Installation This chapter describes the equip ment and site requirements f or installing the Cisco u BR904 cable modem.
Safety Recommendations Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-2 Safety Recommendations The following guidelines will help to ensure your safety and protect the equipment. This list does not cov er all potentially hazardous situations, so be alert .
Preparing for Instal lation 2-3 Safety with Electricity Saf ety with Electricity Follo w these basic guidelines when wo rking with any el ectrical equipment: • Disconnect all power and external cables before installing or removing a Cisco uBR904 cable modem.
Safety Recommendations Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-4 Follo wing are guidelines for pre venting 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 unf i nished surface of the Cisco uBR904 cab le modem.
Preparing for Instal lation 2-5 CISPR 22 Requirements particular instal lation. If this eq uipment does cau se harmful interf erence to radio o r television reception, which can be determined b y turn.
Site Requirements Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-6 AC Pow e r The A C-input po wer supply in the Cisco uBR904 cable modem uses a power f actor corrector that allo ws the Cisco uBR904 cab le modem to operate on input voltage and frequency within the ranges of 100 to 240 V A C and 50/60 Hz.
Preparing for Instal lation 2-7 Wiring and Cabling If wires exceed recommended di stances, or if wires pass betw een buildings, gi v e special consideration to the effect of a lightning strike in your vicinity .
Site Requirements Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-8 W e recommend that you replace any cable that is in question to begin the installation with clean, two-way digital data transmission media.
Preparing for Instal lation 2-9 Personal Computer Hardware and Softwa re P ersonal Computer Hardw are and Software The Cisco uBR904 cable modem must be c onnected to a personal computer at the installation site.
Site Requirements Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-10 Figure 2-1 Cisco uBR904 Cable Modem Footprin t and Outer Dimensions Site En vironment T able 2-1 lists the operating and nonoperating en vironmental site requirement s.
Preparing for Installation 2-11 Preventive Site Configuration: Maintaining Normal Operation T able 2-1 Specifications for Operating and Nono perating En vironments Pre ventive Site Configur ation: Maintaining Nor mal Operation Planning a proper location for the Cisco uBR90 4 cable modem is essential for successful system operation.
Tools for Instal lation Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-12 P ower Consider ations Follo w these precautions and recommendations when planning po wer connections to the.
Preparing for Installation 2-13 Making a Crossover Ethe rnet Cable Connection Making a Crossov er Ether net Cable Connection The RJ-45 receptacle supports standard stra i g ht-thr ou g h and crosso v e r Ca te go ry 5 UTP (RJ-45) cables. Cisco Systems does not suppl y Category 5 UTP cables; these cables are av ailable commercially .
Configuration Information Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-14 Note Referring to the RJ-45 pinout in T able 2-2, proper common-mode line termi nations should be used for the unused Category 5 UTP cable pairs 4/5 and 7/8.
Preparing for Installation 2-15 Cisco uBR904 Cable Mode m Installation Checklist Note If an error message is displayed on the uBR904, you can find its explanation in the Cisco Cable CPE Err or Messages book, vie wable online at www .cisco.co m/univ ercd/cc/td/doc/product/cable/cab_mo dm/ubcmerrs.
Site Log Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-16 Site Log A site log provides a historical record of al l actions rele v ant to the Cisco uBR904 cable modem operation and maintenan ce. K eep the site log in a common place where anyone who performs tasks has access to it.
Preparing for Installation 2-17 Site Log T able 2-5 Site Log Example Date Description of Action P erformed or Symptom Observed Initials.
Site Log Cisco uBR904 Cable Modem Insta llation and Configuration Guide 2-18.
An important point after buying a device Cisco Systems UBR904 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Cisco Systems UBR904 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Cisco Systems UBR904 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Cisco Systems UBR904 you will learn all the available features of the product, as well as information on its operation. The information that you get Cisco Systems UBR904 will certainly help you make a decision on the purchase.
If you already are a holder of Cisco Systems UBR904, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Cisco Systems UBR904.
However, one of the most important roles played by the user manual is to help in solving problems with Cisco Systems UBR904. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cisco Systems UBR904 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
