Black Box LP004A manual Frame Buffering and Latency

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

Dual LEDs indicate operating status of ports may be viewed from any direction, and are mounted on the top as well as end for convenience. There are power (PWR) indicators for the unit to validate that the unit is turned ON. For each port, there are Link and Activity (LK/ACT) LEDs indicating traffic and mounted on the top of the unit, whereas the end LEDs mounted next to ports indicate (LK/Act) as LA1, LA2, LA3, LA4 for each of the four ports. 10/100 (ON for 100Mbps), and full/half duplex (F/H is ON for full duplex) indicators for port # 2.

The external DC power plug connector (for optional AC PS) or “jack” is in the right rear of the chassis (not included with the unit). The internal DC input terminal block is also provided on the rear side of the unit.

2.5 Frame Buffering and Latency

The Black Box LP004A-Series Power over Ethernet (PoE) Switch are store-and- forward switches. Each frame (or packet) is loaded into the Switch’s memory and

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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 PerformanceCold Start Operating Environment Ambient Temperature ratingsStorage Temperature Maximum Ethernet Segment or Domain LengthsCooling 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