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Dong Tu Science and technology

RS232/422/485 Fiber Optical Modem

RS232/422/485 Fiber Optical Modem

SHORT DESCRIPTION:

The Industrial serial port Optical Fiber Modem directly modulated the RS-232/422/485 electrical signal into an optical signal transmitted over an optical fiber, The utility model has the advantages of small size, convenient and flexible use. The product breaks through the conflict between the traditional interface communication distance and communication speed, and at the same time, solves the problems of electromagnetic interference, ground ring interference and lightning damage, greatly improves the reliability, security and confidentiality of data communication and can be widely used In various industrial control, process control and traffic control and other occasions, especially for banking, power and electromagnetic interference environment has special requirements departments and systems.

General-purpose high-performance optical isolation RS-232 / RS-422 / RS-485 converter, through the switch settings, can support RS-232 / RS-485 bidirectional conversion ,can also support RS-232 / RS-422 bidirectional conversion. The wall-mount design supports DIN-rail standard rail mounting, easy installation, in addition to using single-terminal power supply technology to achieve optical isolation, the RS-232 terminal with independent external power supply, and RS422/485 terminal with DC/DC isolation Transform to provide power, communication signals using high-speed optocoupler isolation. This design can effectively avoid the project due to the sharing of power supply isolation failure, known as the real "isolation."

Product Features:

Automatically detect the serial port rate, identify and control the data transmission direction;

Data transfer rate 0-115.2Kbps adaptive;

The use of advanced communication coding and clock recovery technology to achieve, to ensure signal integrity;

Integrated optical transceiver module, the output optical power is stable and reliable;

Full transparent communication, users do not need any debugging, plug and play;

Unique interface adaptive technology, no switch settings, arbitrarily switch RS-485 / RS-422 interface;

With automatic detection of signal speed function;

RS-485 signal zero delay automatic forwarding ;

Single-terminal 9V power supply, the other terminal of the 5VDC-DC power supply isolation 3000V, no serial port to take power;

Signal transmission using high-speed 3000V optical isolation and pre-emphasis technology;

Communication distance up to 3000 meters (9600BPS);

Support 32 polling environment (can be customized 128 points);

Interface with 1500W surge protection, 15KV electrostatic protection;

485/422 interface using RJ45, COM port and 5-bit terminal optional;

 Support DIN-Rail rail mounting and panel mounting;

Technical Parameter:

Standard Complies with EIA RS-232, RS-485, RS-422 standards;
RS-232 signals: TX, RX, GND;
RS-485 signal: D, D-, GND;
RS-422 signal: R, R-, T, T-, GND;
Receiver sensitivity better than -36dBm:
Transmit power -9dBm / -5dBm
Work method Asynchronous work, point to point or multi-point, 2-wire half-duplex, 4-wire full duplex
Direction control the use of data flow to automatic control technology, automatic identification and control of data transmission direction;
Baud rate 300-115200bps, automatic detection of serial signal rate
Load capacity support 32 polling environment (can be customized 128 points)
Transmission distance RS-485/422 terminal 3000 meters (9600bps), RS-232 terminal is recommended not more than 5 meters
Interface protection 1500W surge protection, 15KV electrostatic protection
Optical isolation 3000V
Interface features ITU-T V.24 meet the standards
Interface Type RS-232: DB-9 female, RS-485/422: DB-9 male, RJ45 or 5-pin terminals
Working temperature -20°C ~ 60°C 
Storage temperature -25°C ~ 85°C
Relative Humidity 5%~95% (non-condensing)
Input power 9V power supply
Power consumption Static power within 120mA, the average dynamic power within 300mA
Indicator POWER: power indicator
TxD:Optical interface to send data light
RxD:Optical interface to receive data indicator
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