The ODW-631 is a fibre optic modem designed for point to point fibre optic connections between RS-422/485 networks or devices.The ODW-631 is designed for harsh industrial usage as well as road or railway installations meeting industrial level EMC specifications and having a wide operating temperature range.The maximum distance of the fibre link depends on selected transceiver and fibretype.Fibre distances up to 80 km (50 miles) are possible using singlemode fibre.The unit has a retiming function that eliminates the problem of jitter and hence ensures reliable communications in all situations.It is possible to use the ODW-631 in conjunction with the ODW-621 to provide protocol conversion from RS-232 to RS-422/485 as well as the fibre optic link.     
    
    Retiming
    Data rate up to 1.5 Mbit/s
    4-position screw terminal connector
    Switch selectable failsafe/termination
    2 and 4 wire applications
    Redundant power supply inputs
    Status interface for fault indication
    LED fault indication (Red)
    Design for harsh environments
    Manchester coded protocol (synchronous mode)
    Bi-di transceivers (MM)LC-2, (SM)LC20, LC-40, LC-60
    –40°C to +70°C operating temperature
    LC-2 Multimode LC connectors, 5 km
    LC-15 Singlemode LC connectors, 15 km
    LC-40 Singlemode LC connectors, 40 km
    LC-80 Singlemode LC connectors, 80 km