Serial to Fiber Converter RS485/422 Fiber Modem SM Duplex 20km GM268SM-F20

Description

Model 268 is a sort of more function and economy RS-485/422 interface optic fiber MODEM. It is the best choice to connect RTU to HOST or SCADA controller. It used Optic fiber as transfer medium, increase the transfer function of system. Communication equipment abstain menace effective to lightning strike, surge, electromagnetism disturb under the secure environment.

Function and Characteristic

a) Support RS-485/RS-422 interface

b) Asynchronous, point to point, rate up to 120Kbps

c) Support 5V DC power input

d) 1500W surge protection, 15KV static protection

e) RS-485/422 port support 32 node (can choice hand-tailor 128 Node)

f) Working wavelength: 1310nm

g) Auto test signal rate, zero delay auto transmit

Performance guideline

Interface: support EIA RS-485, RS-422 standard

Rate: 0-120Kbps

Transmit distance: RS-485/422 port 1200m, optical port multi-mode 2KM, single-mode 20KM

Working environment: -25℃ to 70℃

Appearance guideline

Interface type: 5 bit terminal block (RS-485/422), multi-mode choice ST/SC/FC interface, single-mode choice FC/SC/ST interface

L*W*H: 100mm*69mm*22mm

Shell: Iron

Color: White

Weight: 230g

Pin define

Optical fiber interface

IN --------- Optical fiber input

OUT --------- Optical fiber output

RS-422 port

T+ --------- RS-422 Send +

T- --------- RS-422 Send -

R+ --------- RS-422 Received +

R- -------- RS-422 Received –

GND --------- Ground

RS-485 port

D+ --------- RS-485+

D- --------- RS-485-

GND --------- Ground

Indicator light explain

Power: Power indication

RxD: Optical fiber interface receive indication

TxD: Optical fiber interface send indication

Applications

Products

Ordering Information

Packaing and Shipping

Shenzhen Nufiber Systems Technology Co., Ltd. Established in June, 2003,is a professional manufacturer and exporter which mainly engaged in fiber optic equipment and HD network transmission devices. Headquartered in Shenzhen, it also has offices in Hangzhou, Kunming. The business and customers are located in more than 20 countries and regions.

We are committed to providing customers around the world to provide comprehensive products, the latest technology and professional services to help customers to build high-quality network platform, combined with the actual needs of customers, and providing individualized to meet customer demand for a comprehensive solution.

In recently years, relying on the R & D strength of itself and Huazhong University of Science and Technology, the company has owned many creative products and patented technology such as Optical Transceiver Module, Fiber Media Converters, Industrial Switches, Digital video fiber converter, IP Ethernet Coaxial extender, POE switch, DVI/HDMI fiber optic extender and others. Now, with the growth of the industry development, it has maintained annual average increasing rate of 30%. At present, the company has been the famous supplier in HD transmission industry. It has lots of customers and cases in security monitoring and professional audio and visual industry…

Now, the company has quickly stood among the forefront of domestic HD transmission suppliers with strong R & D strength and competitive marketplace. In the future, the company will keep sustainable innovation to promote HD transmission change, and create new business value for our users.