
Table of Contents
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Table of Contents
1.SPECIFICATIONS..........................................................................9
1.1Technical Specifications........................................................9
1.2Ordering Information............................................................14
2.INTRODUCTION..........................................................................19
2.1Inspecting the Package and Product...................................19
2.2Product description..............................................................20
2.3Frame Buffering and Latency..............................................23
2.4Features and Benefits .........................................................26
3.INSTALLATION............................................................................29
3.1Locating the Edge Switch Unit.............................................29
3.2LE1505-RACK for Rack Mounting of LPH240A ..................32
3.3LH1505P-RACK for Rack Mounting....................................33
3.4 DIN-Rail mounting option ....................................................34
3.5Power Requirement for LPH240A (48V) Edge Switch ........35
3.6Powering the LPH240A with –48VDC power input..............36
3.7LPH240A Series, DC-powered, -48VDC Installation...........37
3.8Connecting Ethernet Media.................................................38
3.8.1Connecting Twisted Pair............................................39
3.8.2Connecting Fiber Optic ST-type, “twist-lock”.............40
3.8.3Connecting Fiber Optic SC-type, "Snap-In"...............41
3.8.4Connecting Single-Mode Fiber Optic.........................41
3.8.5Power Budget Calculations, Fiber Media ..................42
3.8.6Connections to NICs..................................................43
4.OPERATION ................................................................................44
4.1Dual-Speed Functionality, and Switching............................44
4.2Auto-cross (MDIX), Auto-negotiation and Speed-sensing...46
4.3Dual LEDs, Front-panel and side-panel ..............................47
4.4Hardware operated Alarm Contact......................................48