Black Box LP004A manual Before Calling for Assistance

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BLACK BOX→ Power Over Ethernet Switch(PoE) Installation and User Guide

5.1Before Calling for Assistance

1.If difficulty is encountered when installing or operating the unit, refer back to the Installation Section of the applicable chapter of this manual. Also check to make sure that the various components of the network are interoperable.

2.Check the cables and connectors to ensure that they have been properly connected and the cables/wires have not been crimped or in some way impaired during installation. (About 90% of network downtime can be attributed to wiring and connector problems.)

3.Make sure that an AC power cord is properly attached to each

LP004A Series unit. Be certain that the AC power cord is plugged into a functioning electrical outlet. Use the PWR LEDs to verify each unit is receiving power.

4.If the problem is isolated to a network device other than the LP004A and LBH110 Series 10/100 Mb/s switch product, it is recommended that

the problem device is replaced with a known good device. Verify whether or

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Contents January2006 LP004A Power over Ethernet PoE SwitchTrademarks Contacting Black Box Corporation Phone 724Iii Page Page Page Vii Page Page Specifications Operation Revisions Network Standards Ports PerformanceStorage Temperature Operating Environment Ambient Temperature ratingsMaximum Ethernet Segment or Domain Lengths Cold StartCooling Method PackagingTemperature un-controlled Extreme Ratings -40 to 75C Power SupplyLED Indicators Dual front and top Port ConnectorsAgency Approvals and Standards Compliance Mounting optionsSummary of models and descriptions LP004A Series AccessoriesInspecting the Package and the Product Product Description LP004A Series Page Page Page Page Black Box LP004A with four RJ-45 Copper ports Page Black Box LP004A, as shown in is Black Box LP004A-Series, with four RJ-45 Copper ports Frame Buffering and Latency Page Page Two sets of LEDs for viewing status from any angle Rugged metal case, Industrial grade DC Power input for LP004A PoE SwitchPage Video Example 4b. LP004A Power Source Switch for PoE device onlyPage NCM Locating the PoE Switch Unit Page Page Page LP004A is shown alongside DIN-Rail-MC2 bracket DIN-Rail mounting optionPower Requirement for Black Box LP004A Power Source Switch Power Output Power Consumption of the unit DC Power Terminals +, -, gndLP004A , DC-powered, -48VDC Installation GND can be hooked up at the last Connecting Ethernet MediaMedia Ieee Standard Connector Page Dual-Speed Functionality, and Switching Switching, Filtering and Forwarding Auto-cross MDIX, Auto-negotiation and Speed-sensing Switching, Address LearningPage Troubleshooting Before Calling for Assistance When Calling for Assistance