724-746-5500 | blackbox.com
724-746-5500 | blackbox.com
Page 7
Chapter 2: Overview
2. Overview
2.1 Introduction
Use the PoE PSE Media Converter, 10/100/1000BASE-T to 1000BASE-SX/LX to connect two types of network segments easily
and inexpensively. It complies with IEEE 802.3af power over Ethernet (PoE) standard. The AC-powered PoE media converter is
power sourcing equipment (PSE) that combines data received over a twisted-pair link with -48 VDC, providing power to an IEEE
802.3af-powered device (PD) over the existing CAT5 UTP cable.
The media converter includes PD signature sensing and power monitoring. It also features overcurrent protection, undercurrent
detection, and fault protection input. The Link Fault Passthrough (LFP) allows the media converter to monitor both the fiber and
copper RX ports for loss of signal. In case of a loss of RX signal on one media port, the converter will automatically disable the TX
signal to the other media port, passing through the link fault. Far End Fault (FEF) enables the converter to stop sending link pulse
to the link partner once a loss of the fiber RX signal is encountered. Then the link partner will synchronously stop sending data.
FEF prevents loss of valuable data transmitted over an invalid link.
Available models include:
• LPS500A-MM-SC: PoE PSE Media Converter, 10/100/1000BASE-T to 1000BASE-SX, SC connectors, multimode fiber
• LPS500A-SM-10K-SC: PoE PSE Media Converter, 10/100/1000BASE-T to 1000BASE-SX, SC connectors, single-mode fiber,
10 km
• LPS500A-MM-LC: PoE PSE Media Converter, 10/100/1000BASE-T to 1000BASE-SX, LC connectors, multimode
• LPS500A-SM-10K-LC: PoE PSE Media Converter, 10/100/1000BASE-T to 1000BASE-SX, LC connector, single-mode fiber, 10km
2.2 Features
• IEEE 802.3af PoE PSE compatible
• Internal AC power supply
• Overcurrent protection
• Undercurrent detection
• Minimum load sensing
• Fault protection Input
• PSE MDI power enable/disable
• LFP and FEF
• Supports one 10/100/1000BASE-T Gigabit Ethernet UTP port and one 1000BASE-SX/LX (SC/LC) Gigabit Ethernet fiber port
• Supports 802.3x flow control for full-duplex ports and backpressure for half-duplex ports
• Supports comprehensive types of fiber with different distances and connections, including SC and LC
• Supports auto mode on the twisted-pair port
• DIP switch to set configurations
• Supports jumbo frame (Normal Mode: 2 KB, Cut-Through Mode: 9 KB)
