The RLH Serial Data Over Fiber system is a multifunction converter that supports asynchronous serial communications (RS-232/485/422) over fiber optic cable. Fiber optics not only provide the long distance transmission capability up to 12.4 Miles (20km), but also provide immunity to EMI/RFI and transient surges. They are ideal for data communications near large electrical equipment or where radio interference needs to be avoided.
Standards may be mixed and matched, so that RS-232 devices can be connected to RS-485/422 devices, or 2-wire RS-485 devices can be connected to 4-wire RS-422 devices without the need for a converter and isolator.
It supports serial data rates up to 500kbps, and is auto-sensing and self-compensating, requiring no switches, jumpers or other configuring. The aut-turnaround feature eliminates the need for flow control when working with RS-485 signals.
They require a 12-24VDC 1A local power source to operate, and a low cost power adapters are available. To power multiple units, of for additional powering options, see our DIN mount power supply products here.