Delivery Time:In 7 working days
Certification:CE,FCC,ROHS

850nm Multi-mode Fiber to Serial Converter , RS-232 to Optical Fiber

Interface:RS-232/ST interfaces supported
Asynchronous transmission:maximum rate of 115.200bps for point-to-point application
Working wave length:850nm (multi-mode)
Electric interface:RS-232: DB9 connector

Specifications:

Interface	RS-232/ST interfaces supported
Asynchronous transmission	maximum rate of 115.200bps for point-to-point application
Transmission distance	as far as 4,000 meters
Working temperature	-25℃ to +70℃, relative humidity 5% to 95%
Working wave length	850nm (multi-mode)
Electric interface	RS-232: DB9 connector
Optic fiber interface	ST interface (other interfaces can be customed)
RS-232 interface features	standard RS-232 3-line interface 15KV (electrostatic protection),  highest transmission rate of 115.2Kbps
Power supply	No external power needed with serial charge technology

Description:

As a super-mini optic fiber modem supporting　asynchronous RS-232 communication interface, UT-2077 modem is the ideal choice for the connection from remote terminal unit (RTU) to host or controller of supervisory control and data acquisition (SCADA).Besides supporting RS-232 asynchronous communication protocol, the RS-232 mode of UT-2077 also support data control (TXD or SD) for an　adaptability with various kinds of software and a simplicity of ways of control. Various kinds of optic fiber connections are supported by UT-2077 modem. A maximum communication distance of 4 kilometers can be achieved. The highest transmission rate of RS-232 signal is 115.2KBPS.Mixed interfaces can be used of different electric standards. With the unique adoption of RS-232 charge pump, UT-2077 modem does not need any initialization of the serial ports to obtain power supply. 
    The unique I/O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically without any handshaking signal (for example RTS, DTR etc). And consequently, the stability of applications compiled under RS-232 half duplex is ensured for best EMI/RFT performance.
    UT-2077 supports two signal transmissions: sending and receiving. Connection with RS-232 is through DB9 female connector and two ST connectors of the optic fiber for easy installation and un-installation.
    Two separate optic emitter and receiver of standard ST interface with a wavelength of 850nm (multi mode) are used by UT-2077.Almost all the multi-mode optic fiber cable of various sizes can be used for the connection, including 50/125um, 100/140um, 200um, etc. Under point-to-point mode, two optic fiber cables of opposite data transmission directions are needed for two MODEMs.