Industrial Gigabit Media Converter
10/100/1000Base-T to 100/1000Base-FX

DF101G is an industrial gigabit media converter allows one Ethernet 10/100/1000Base-T UTP RJ-45 port to be inter-changeably connected to one 100/1000BASE-FX Fiber SFP port. It can be operated for the scenario under the temperature range from -40 degrees C to 75 degrees C. With auto negotiation and auto MDI/MDIX, the UTP RJ45 port is compatible to Gigabit Ethernet 10/100/1000Base-T interfaces. For the fiber SFP port, the port speed of 100Mbps / 1000Mbps can be set by the dip switch on the front panel.

DF101G 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 DF101G directly forward packet to the destination port without checking CRC for lowest latency requirement. If the speeds of the RJ45 and the SFP ports are not the same, the converter mode will automatically switch to the “store and forward” architecture to handle packets.

With the Link Fault Pass-through (LFP) function, the DF101G 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 DF101G, both end devices can be notified of a loss of fiber link.