HP J3188A manual Safety and Regulatory Statements, Mounting Precautions

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Safety and Regulatory Statements

This chapter covers the following topics:

mounting precautions

power precautions

safety and regulatory statements

Declaration of Conformity

Mounting Precautions

When you put a hub into a rack, follow these mounting precautions:

The rack or cabinet should be adequately secured to prevent it from becoming unstable and/or falling over. The hub should be mounted in a position toward the bottom of the rack for stability and to make it easier to stack the other hubs on top.

Before mounting a hub, plan its location and orientation relative to other devices and equipment. Also consider the cabling that will be attached to the hub and the ports that will be used. Verify that there is room for the grouped cables to trail out from the side of the hub. Allow at least 2.54 cm (1 inch) in the front of the hub. In the back of the hub, allow at least 3.8 cm (1 1/2 inches) of space for the power cord. If you are using a Redundant Power Supply, allow the appropriate amount of space for the RPS connector.

Ensure that the HP Hub-16M does not overload the power circuits, wiring, and over-current protection. To determine the possibility of overloading the supply circuits, add together the amperage ratings from the name- plates of all your hubs (and other equipment) installed on the same circuits and compare the total with the rating limits for the supply circuits.

Make sure that the power source circuits are properly grounded, then use the supplied power cord to connect the HP Hub-16M to the circuit. See the Safety Statements in this chapter.

Do not block airflow around the side and the back of the unit.

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Contents HP J3188A Page HP 10Base-T Hub-16M J3188A Installation and Reference GuidePublication Number Front of the Hub HP 10Base-T Hub-16M J3188ABack of the Hub IiiNetwork Connections FeaturesContents Cables and Connectors Vii Security InformationPage Installing the Hub Verify included parts Installing and Configuring Your HubConnect the external transceiver Verify the hub operates correctlyTime Cord connected directly to the hub for proper operationPattern LEDRack or Cabinet Mounting Mount the hubTable Mounting Connect the hub to your network Connecting Hubs Together Connecting Devices to the HubTwisted-Pair Cascade Connections ThinLAN Connections InstallingOhm terminator Interpreting LED Status Connecting the Hub-16M to a Fiber-Optic BackboneInterpreting Hub Status LEDs Following table provides LED port information Interpreting Port Status LEDsPage Troubleshooting Approaches TroubleshootingTroubleshooting Using a Checklist to Diagnose the Hub Using a Checklist to Diagnose the HubProblem Solution LED Operation Diagnostic Tips Troubleshooting LED OperationPower Coll Hub will automatically recover afterTesting the Hub Only Hub Maintenance TasksClearing a Password for the Ascii Console Running Connectivity Tests Troubleshooting Hub Maintenance TasksObtaining Firmware Enhancements Managing the Hub Setting up the Ascii ConsoleRemotely, Using Telnet Directly, Using a Serial Cable and a TerminalManaging the Hub Starting the Console Remotely, Using a Modem and a TerminalCommands are described in the rest of the chapter Console Command ReferenceExample HE ST This displays help for the Status command Syntax Conventions on Help ScreenDefault Description BAckupCOunters CDpstatusCounter Name Definition Valid Range RangeWhen to Use IPconfig IPconfigDIsconnect Using Novell NetWare IPX Configuring for Network ManagementUsing IP Following table explains the IP parametersMAnagers SHow Parameter Default Value DefinitionManager Address IP or IPX Receive Alarms? CommandTo end your editing MEssageinterval Displays the other devices that are using CDP protocolNEighbor Table entry with ID 1 would now be a blank lineClear a password PAsswordPIng Community namePOrt port ON/OFF REsetRObustness SEcure portSHowCLear Security Configuration Parameter DefinitionsManaging the Hub Configuring Security on All Twisted-Pair Ports Configuring Security on a Single PortEavesdrop Prevention, must be set to on Address Selection Authorized Clearing Security Violation Indicators Showing the Security ConfigurationSTatus SPeed new speedStatus Information What It Means TEstlink Network links, see the , Troubleshooting16M will respond with the correct packet To sendPage Recommended Cables Cables and ConnectorsFollowing table shows PC connections to the RS-232 port Following table shows network connections to the hub Cables and ConnectorsCable Function Cable Type HP Product Number Pins 1 and 2 must be a twisted pair Twisted-Pair Cable/Connector Pin-OutsPins 3 and 6 must be a twisted pair Twisted-Pair Cable for Hub-to-Computer Network ConnectionInstaller for assistance with your cabling requirements RS-232 Connector and Cable Pin-OutsCable pin-out described below Minimum pin-out will function correctlyMinimum Cable Pinout for Ascii Console Connection SignalRS-232 Modem Cable Twisted-Pair Straight-Through Cable Twisted-Pair Cable Pin AssignmentsHub End MDI-X Physical SpecificationsElectrical EnvironmentalSpecifications ConnectorsElectromagnetic US Robotics Courier V.FC/V.34 Modem ConfigurationMegahertz XJ2288 Pcmcia card modem Intel 14.4EX Practical Peripherals PM288MT IISupra FAX Communication Between the Hub Network Management Station Network AddressingIP Addresses for IP and Non-IP Networks IPX Addressing for Novell NetWareIPX Addressing Notes Globally Assigned IP Network AddressesCountry Device IP ConfigurationCompany Name/Address Bootp Process Using BootpDefinitions of the table entry fields Bootp Table File EntriesPage How Backup Links Work Backup LinksLimitations Backup LinksAdditional Notes How the Backup Function Works Examples of Backup LinksHub to a Switch Hub to a ServerHub can monitor only one link T e G g e s t i o nConfiguration/Installation Sequence Configuring a Backup LinkIndications of Backup Link Activation Identifying the Backup LinkReactivating the Primary Link Page Understanding Network Security Security InformationHow Eavesdrop Prevention Works How Intruder Prevention WorksAuthorized MAC address Security InformationAssigning the Authorized MAC address Setting Inbound Security with Intruder Prevention Send Alarm Auto Port DisableSetting Outbound Security with Eavesdrop Prevention Security Information Page Mounting Precautions Safety and Regulatory StatementsTemperature might exceed 45C 113F Power PrecautionsSettings to configure Equipment and should be easily accessibleGrounding Safety InformationTible de causer des dommages à léquipement Informations concernant la sécuritéHinweise zur Sicherheit Considerazioni sulla sicurezza Consideraciones sobre seguridad Safety Information Japanese FCC Class a Statement for U.S.A. Only Regulatory StatementsEuropean Community CanadaDeclaration of Conformity Index IndexDiagnosing with the LEDs … 2-2 diagnostic tests Late collision … 3-13 mounting the hub … LED description … Verifying hub operation … Page J3188-90001