- ATC-277 MM is a kind of multi-function serial port to fiber optic MODEM converter.
- It is the best solution for remote terminal unit (RTU) connect to HOST or a distributed data acquisition system (SCADA) controller.
- This product uses optical fiber as transmission medium, to improve the system transmission performance.Effectively avoid bad environment of communications equipment.Such as the lightning, surge and electromagnetic interference
- Support “point-to-point” mode.
- Support MM mode fiber with SC or ST interfaces
- RS-232/422/485 3-in-1 interface
- Extend serial communication distance
- MM mode is 2km (ATC-277MM)
- Serial Baud Rate：RS-232 300 to 115.2KBPS
- RS-422/485 300 to 230.4KBPS
- 600W lightning protection for all RS232 signal line,
- 1000W lightning protection for all RS485 signal line
- Small size and support DIN rail for easy installation
- Isolation protection, reduce electrical interference
- Optical Fiber Port
- Interface : SC or ST
- Fiber requirements : 50/125μm,100/140μm,200μm.
- Transmission distance : SM:20 km,MM:2km
- Wavelength : SM:1310 nm,MM:850 nm
- Coupled Power Budget : 12.1 dB
- Point to point transmission: half-duplex and full-duplex
- RS-232/485/422 Port
- Interface : DB9-DTE (Male) for RS-232.
- 6-bit terminal connector for RS-485/422.
- RS-232 : TXD,RXD,GND
- RS-485 : 485+,485-
- RS-422 : TX+,TX-,RX+,RX
- Baud rate : 300bps ~ 250.4kbps
- Lightning protection：RS-232 : each line 600W
- RS-485/422 : each line 1000W
- Physical Specifications
- Shell : iron (1 mm)
- Size : 100mm × 86mm × 26 mm
- Weight : 0.60kg（full package）
- Operating temperature : -20°C to 70°C
- Storage temperature : -40°C to 80°C
- Working humidity : 5 ~ 95% RH
- Power supply : 9-24VDC @ 250mA max.
- Ingress Protection : IP30
- Model no. ATC-277SM/MM