Steel Shell Desktop 1*RS485 + 1*RS232 Optical Modem

This optical terminal provides 2-channel serial fiber transmission, the first channel is RS485 interface, the second channel is RSS32 interface. This product breaks through the contradiction between the communication distance and communication rate of the traditional serial interface. At the same time, it also solves the problems of electromagnetic interference, ground loop interference and lightning damage, greatly improving the reliability, security and confidentiality of data communication. It can be widely used in various industrial control, process control and traffic control occasions, especially suitable for banks, power and departments and systems with special requirements for electromagnetic interference environment.

● Integrated circuit based on independent intellectual property rights;

● Provide up to 2 serial ports; serial port 1 supports RS485, serial port 2 supports RS232 interface (3-wire TXD, RXD, GND);

● RS485/422 channel can transmit asynchronous serial port data with adaptive baud rate from 0-256kbps, RS232 channel can transmit asynchronous serial port data with adaptive baud rate from 0-115.2kbps;

● Serial port lightning protection reaches IEC61000-4-5 (10/700μS) differential mode: 6KV, impedance (40Ω); common mode: 6KV, impedance (40Ω) standard;

● Power supply supports super lightning protection function: lightning protection, anti-inductive high voltage, anti-surge, etc.; fanless and efficient heat dissipation, reducing repair time;

● DC power supply, can be DC7-12V wide range power supply; anti-reverse connection protection

● Fiber Interface   

Optical port: 1

Optical fiber: single fiber / double fiber

Optical fiber interface: FC/SC/ST optional

Wavelength: 850nm/1310nm multimode; 1310nm/1550nm single mode

Transmission distance without relay: 20~120Km

Typical transmit power:

    Single mode 1310/1550nm: ≥-9dBm

    Multimode 850nm: -18dBm

    Multimode 1310nm: -25dBm

Acceptance sensitivity range: -28dBm~- 40dBm

● Serial Interface

Standard

    EIA/TIA-232 RS-232 (ITU-T V.28)

    EIA/TIA-485 RS-485 (ISO/IEC8284)

Serial interface:

    RS-485 2 wires: A (corresponding to TX+) B (corresponding to TX-) GND

RS-232: RXD TXD GND

● Working Environment   

Working temperature: -15℃—+65℃

Storage temperature: -40℃—+85℃

Working humidity: 0%—95% (non-condensing)

MTBF: >100,000 hours