Fiber optic converter between SM Fiber and RS-232/422/485 (1 pair)

Overview

OP-FM-RS485 is based on FPGA, which supports asynchronous RS-485 communication interface Fiber Modem. OP-FM-RS485 is the best choice of connecting to the remote terminal unit (RTU) to a host (HOST) or a distributed data acquisition system (SCADA) controllers, with very high performance price ratio. Using ordinary multi-mode fiber, effective communication distance is up to 4KM, while using ordinary single-mode fiber, effective communication distance up to more than 40KM. Serial port communication rate is up to 921.6KBPS. As a result of the fiber as a transmission medium, you can completely avoid the threat to communication device under the adverse environment, such as lightning, surges and electromagnetic interference, at the same time it saves investments of the original lightning surge protection devices that using copper . 

Prduct Features
 Based on self -copyright IC
 Have the ability to automatically detect the baud rate of serial port signal
 Automatically test the reason of the device matt is that the device is power off,
   or E1 line is broken. And then indicate on the LED
 Serial port interface lightning-protection reached IEC61000-4-5 (8/20μS) DM(Differential Mode): 6KV, Impedance (2 Ohm), CM(Common Mode): 6KV, Impedance (2 Ohm) standard
 Support SNMP Network Management
 Serial channel can transmit adaptable serial data asynchronously 300-921.6Kbps baud rate

Technical Parameter OP-FM-RS485 RS485 Fiber Modem (serial fiber optic converter convertor) 

Optical interface :
Single-mode Fiber
Diameter of fiber core 8/125um, 9/125um
Transmission distance 40Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km)
Wave Length 1310nm
Transmitting power -9dBm (Min) ~-8dBm (Max)
Receiver sensitivity -27dBm (Min)
Link budget 18dBm
Connector One one is SC and the other end is LC with SFP included

Serial interface:
Standard EIA/TIA-485 RS-485 (ISO/IEC8284)
Serial Interface RS-485 4 wires: TXD+, TXD-, RXD+, RXD-, Signal Ground RS-485 2 wires: Data+(Correspond TX+), Data-（Correspond TX-）, Signal Ground

Dimension

Product Size 103X93X28mm(WXDXH)
Simple packaging 200X176X55mm(WXDXH)
Piece Weight 1.2KG

Operation Environment

Operating temperature 0°C~50°C
Storing temperature -40°C~+70°C
Relative humidity 95 %
No causticity and solvent, dust free, and no strong magnetic interference.

Power
Voltage AC180V ~ 260V；DC –48V；DC +24V
Consumption ≤10W