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After you have completed this chapter, proceed to Chapter 3, "Installing the Gateway," for installation instructions.
Follow these guidelines to ensure general safety:
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.
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Warning Read the installation instructions before you connect the system to its power source. |
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Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. |
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Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. |
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Warning Ultimate disposal of this product should be handled according to all applicable national laws and regulations. |
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Warning Preparation and Safety Guide. This guide contains important safety information you should know before working with the system. |
Follow these guidelines when working on equipment powered by electricity.
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Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground the operator; this can cause serious burns or can weld the metal object to the terminals. |
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Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. |
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Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is OFF and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
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Warning Incorrect connection of this or connected equipment to a general-purpose outlet could result in a hazardous situation. |
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Warning This equipment is to be installed and maintained by service personnel only as defined by AS/NZS 3260 Clause 1.2.14.3 Service Personnel. |
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Warning Read the installation instructions before you connect the system to its power source. |
If an electrical accident occurs, proceed as follows:
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when electronic components are improperly handled and can result in complete or intermittent failures.
Always follow ESD-prevention procedures when removing and replacing components. Ensure that the chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, the wrist strap and cord must be used effectively. If no wrist strap is available, ground yourself by touching the metal part of the chassis.
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Caution For safety, periodically check the resistance value of the antistatic strap, which should be between 1 to 10 megohms (Mohm). |
This section describes the requirements your site must meet for safe installation and operation of your system. Ensure that your site is properly prepared before beginning installation.
The gateway can be placed on a desktop or mounted in a rack or on a wall. The location of the chassis and the layout of your equipment rack or wiring room are extremely important for proper system operation. Placing equipment too close together, inadequate ventilation, and inaccessible panels can make system maintenance difficult or cause system malfunctions and shutdowns.
When planning your site layout and equipment locations, remember the precautions described in the next section, "Preventive Site Configuration." If you are experiencing shutdowns or unusually high errors with your existing equipment, these precautions might help you isolate the cause of failures and prevent future problems.
The following precautions will help you plan an acceptable operating environment for your gateway and help you avoid environmentally caused equipment failures:
The following information will help you plan an acceptable equipment rack configuration:
Check the power at your site to ensure that you are receiving "clean" power (free of spikes and noise). Install a power conditioner if necessary.
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Warning The device is designed to work with telephone-network voltage (TN) power systems. |
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Warning The telecommunications lines must be disconnected 1) before unplugging the main power connector and /or 2) while the housing is open. |
The gateway power supply includes the following features:
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Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). |
When setting up your gateway, consider distance limitations and potential electromagnetic interference (EMI) as defined by the applicable local and international regulations.
Network connection considerations for 10BaseT and 100BaseT are discussed in the next section, "Ethernet Connections."
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Warning The Ethernet 10BaseT, console, and auxiliary ports contain safety extra-low voltage (SELV) circuits. Avoid connecting SELV circuits to telephone-network voltage (TNV) circuits. |
The IEEE has established Ethernet as standard IEEE 802.3. The most common Ethernet implementations are as follows:
The Ethernet interface for the Cisco VG200 operates at speeds up to 100 Mbps.
Use the cable provided to connect the Cisco VG200 to a switch.
Posted: Mon Jun 12 12:54:41 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.