Many important industrial environment RS-232/RS-485/RS422 equipment still in use interface design. However, as an electrical interface will be easy for many of electromagnetic interference from the natural world. Many users RS-232/RS485/RS422 fiber modem serial port project to solve EMI problems. and the extension of RS-232/RS485/RS422 serial transmission distance of several kilometers, or even several dozens of kilometers.
A serial port is RS-232/RS-485/RS422 YKDS277 fiber modem.Uses industry-standard design, appearance design support DIN-rail hanging standard installation guide, Installation is simple. YKDS277 able to provide end-to-end transparent RS-232/RS-485/RS-422 serial transmission. As a fiber transmission, is the transmission of optical signals in fiber, there is no electrical conductivity, it has a strong anti-jamming capability. The high-voltage and lightning will not be affected. 
Features:
 Optional multi-mode (YKDS277MM), single-mode (YKDS277SM)
Automatic signal detection rate is automatically transmitted Delay
The maximum rate of 500
Multi-mode fiber transmission 2 km, 20 km of single-mode transmission
Communications indicators：
Standards : compliance with the EIA RS-232, RS-485, RS-422 standard
RS-232 signals ： IN,OUT,GND
RS-485 signals ： D+,D-,GND
RS-422 signals ： R+,R-,T+,T-,GND
Fiber-optic signal： IN,OUT
Work : asynchronous, point-to-point
Direction Control : automatic control technology. Automatic identification and data transmission control of the direction
Baud Rate : 0-500Kbps. automatic signal detection rate
Fiber wavelength : 850nm, 1310nm single-mode
RS232 transmission distance : 15 meters, RS-485/422 population 1,200 meters
transmission distance :multi-mode 2 km, 20 km single mode
load capacity : RS-485/422 support for 32 nodes (128 points can be customized)
Interface 1500W Surge protection : protection of 15KV ESD Protection
Power Interface : 8 connector
Optical interface: multi-mode using ST/SC/FC. Single-mode interface using FC/SC/ST
environment indicators ：
Working Temperature : -25 ° C to 70 ° C
Storage temperature -40 ° C to 85 ° C :
Humidity : 5% to 95% relative humidity
Power indicator：
Input power suppy ： 5-40V wide input voltage
power dissipation : 2W
Appearance indicators：
Length×Width×Height： 100mm×69mm×22mm
Shell ： Steel
Colors : white
Weight ： 230g |
