Electrostatic Discharge; Site Requirements - Cisco uBR905 Installation Manual

Chapter 2 Preparing for Installation
•
•
If an electrical accident occurs, proceed as follows:
•
•
•
•

Electrostatic Discharge

Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent system failures. The
Cisco uBR905 cable access router 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.
Although the enclosure helps protect the boards, use an antistatic strap whenever handling the
Cisco uBR905 cable access router. This minimizes the possibility that ESD damage can occur to the
internal boards by touching the external connectors.
Following are guidelines for preventing ESD damage:
•
•
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement
should be between 1 and 10 megohm (Mohm).

Site Requirements

This section describes the following requirements that must be met before installing the Cisco uBR905
cable access router:
•
•
•
•
OL-0598-01 (9/2000)
Never touch uninsulated cable wires or terminals unless the line has been disconnected at the
network interface.
Use caution when installing or modifying cable lines.
Use caution; do not become a victim yourself.
Turn off power to the system.
If possible, send another person to get medical aid. Otherwise, assess the condition of the victim
and then call for help.
Determine if the victim needs rescue breathing or external cardiac compressions; then take
appropriate action.
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 uBR905 cable access router.
Always place the router 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.
Prerequisites, page 2-4
Environmental, page 2-5
Power, page 2-5
CATV Coaxial Cabling, page 2-5
Cisco uBR905 Router Hardware Installation Guide
Site Requirements
2-3