Fiber Gigabit Media Converter
10/100/1000Base-T to 100/1000Base-FX With IEEE802.3af/at 30W PoE Injector

PF211GA is a 10/100/1000Base-T to 100/1000Base-FX GbE media converter, which allows one Ethernet UTP RJ-45 port to be inter-changeably connected to one Fiber SFP port. In addition, the RJ-45 port is compliant with IEEE802.3at/af standards to provide up to 30Watt Power over Ethernet (PoE). This AC powered PoE media converter is a Power Sourcing Equipment Plus (PSE+: Means PoE High Power Output Device) which combines data over a UTP link with 56VDC power, providing power to IEEE802.3at/af powered device (PD) over the existing CAT5 UTP cable.

The PF211GA converter includes a PD signature sensing and power monitoring features. The PoE features over-current protection (OCP), over-voltage protection (OVP), and over-temperature protection (OTP). With the Link Fault Pass-through (LFP) function, the PF211GA can 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, thus passing through the link fault. It then sends out the far end fault (FEF) signal 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 invalid link. Combining the LFP and FEF troubleshooting features of PF211GA, both end devices can be notified of a loss of fiber link.

PF211GA supports both switch mode and converter mode for user applications. In switch mode, it utilizes the “store & forward” architecture to handle packet transfer. It begins to forward a packet to a destination port after the entire packet is received. A received packet will be forwarded to the destination port only if it is error free. Otherwise, it will be discarded. In converter mode, the PF211GA directly forward packet to the destination port without checking CRC for lowest latency requirement. When the speeds of the RJ45 and the SFP ports are not the same, the converter mode will automatically switch to the switch mode “store and forward” scheme to handle packets.