Desktop 1-2 Channels RS232/422/485 Optical Fiber Modem

This optical modem provides 1-2 serial ports for optical fiber transmission, with RS232/422/485 optional for each channel. This product breaks through the contradiction between the communication distance and communication rate of traditional serial interfaces. 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, and is particularly suitable for banks, power plants and other departments and systems with special requirements for electromagnetic interference environments.

● Fiber

Optical Port: 1

Fiber: Single-fiber, dual-fiber

Fiber Interface: FC/SC/ST (optional)

Wavelength: 850nm/1310nm multimode; 1310nm/1550nm singlemode

Transmission Distance Without Relay: 20-120km

Typical Transmitter Power:

Single-mode 1310/1550nm: ≥-9dBm

Multi-mode 850nm: -18dBm

Multi-mode 1310nm: -25dBm

Receiver Sensitivity Range: -28dBm to -40dBm

● Serial Interface

Standards

EIA/TIA-232 RS-232 (ITU-T V.28)

EIA/TIA-422 RS-422 (ITU-T V.11)

EIA/TIA-485 RS-485 (ISO/IEC8284)

Serial Interface:

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

RS-422: TxD+, TxD-, RxD+, RxD-

RS-485 4 wires: TxD+, TxD-, RxD+, RxD-

RS-232: RXD, TXD, GND

● Environmental Index

Working temperature:-40℃—+85℃

Storage temperature: -40℃—+85℃

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

MTBF: ＞100,000 hours

● Based on an integrated circuit with proprietary intellectual property rights;

● Provides 1-2 serial ports over fiber optic transmission, each with RS232/422/485 selectable;

● Equipped with automatic serial port baud rate detection, it automatically detects and controls RS-485 data flow, eliminating the need for handshaking to control data flow;

● RS232/485/422 channels can transmit asynchronous serial data at an adaptive baud rate from 0-115.2bps;

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

● Power supply features superior lightning protection: lightning strike protection, resistant to inductive high voltage, and surge protection; fanless design for efficient heat dissipation, reducing repair time;

● DC power supply (external power supply): supports DC9-12V;

● AC220V power supply (internal power supply): supports a wide AC input range of AC~85-265V;

● DC-48V Power supply (built-in power supply): supports DC36-72V DC wide range input