8RS232/RS485/RS422 Optical Modems realize transmission of 8 channel RS232/RS485/RS422 on single mode fiber. This kind of product has solved the problem of contradiction between communication distance and communication rate of traditional serial port. At the same time, it also has solved the problem of electromagnetic interference, earth link disturbance and thunder/lightning destruction, thus greatly enhancing reliability, security and privacy of data communication. It can be widely used in various kinds of situations such as control, process control and transportation control, and especially suited in bank, electric power as well as departments and systems which have special request to the electromagnetic interference environment.
Based on self copyright IC.
RS485 creates receive and send signal automatically.
RS232/485/422 interface can be optional by dip switch.
Serial port supports 0-115.2KBps baud rate auto-negotiation.
Combination of PDH technology and digital lock loop clock technology.
Unique serial port for circuit protection, supporting hot-plugging.
Data transmission is stable and reliable with integrated light-receiving and transmitting module.
Parameter and Specifications
Wavelength: single-mode 850nm/1310nm/1550nm/multi-mode for option
Diameter of fiber core: 50~62.5μm for multi-mode
Diameter of fiber core: 8.3μm for single mode
Fiber core number: double core/single core for option
Transmitting range: 0-50km/120km for option
Receiving sensitivity： <-36dBm (BER <10-11)
Rate：asynchronous mode, 0－115200bps auto-negotiation
Voltage：AC180V ~ 260V；DC –48V；DC +24V
Relative humidity： 95 %
No causticity and solvent, dust free, and no strong magnetic interference.