Low speed data fiber modem
Basic Info
Model No.: NT-S277
Product Description
Overview
Fiber Optic Modem is a network terminal used for converting optical signals to electrical signals. It has the characteristics of large communication bandwidth and fast network speed.
NT-S277 is a type of RS-232/RS-485/RS-422 serial port fiber optic modem. It adopts industrial standard design and its wall type outface design supports DIN-rail standard lead rail installation, featuring easy installation. Presently many users make use of RS-232/RS-485/RS-422 serial port fiber optic modem to solve the electromagnetic interference in engineers and to extend the RS-232/RS-485/RS-422 serial port transmission distance to several or even tens of kilometers.NT-277 can provide users with RS-232/RS-485/RS-422 serial port end-to-end transparent transmission. Since signals are transmitted over fibers and these optical signals are free of electrical conductivity, they have strong anti-interference capacity and are immune to high-voltage power or thunders.
Features
Zero-Delay automatic forwarding
Supporting three types of interfaces:RS-232/485/422
Automatic detection of serial port rate judgment and control of data transmission direction
Working wavelength:850nm(multi-mode):1310nm(single mode)
Maximum communication rate:500kbps
Optional optical interfaces: SC/ST/FC
Up to 2 kilometers in multi-mode transmission and up to 40 kilometers in single mode transmission
Broad voltage inputs:5~40V DC or 85~265VAC
The interface supports 1500W surge protection and 15KV ESD protection
External power supply
Specifications
Parameter | Specifications |
Standard | In compliance with EIA RS-232 and RS-485 standards |
RS232 signal | IN ,OUT,GND |
RS-485 signal | D+,D-,GND |
RS-422 signal | R+,R-,T+,T-,GND |
Fiber Signal | IN,OUT |
Working mode | Asynchronous working mode, point-to-point |
Direction control | Adopting automatic data flow control technology, supporting automatic judgment and control of data transmission direction |
Baud rate | 0-500Kbps,automatic detection of signal rate |
Fiber wavelength | Multi-mode:850nm;single mode:1310nm |
Transmission distance of electrical interface | RS-232 interface:15 meters:RS-485/422 interface:1200 meters |
Transmission distance of optical interface | Multi-mode:2KM; single mode:20KM |
Load capacity | RS-485/422 interface supports 32 nodes(128 nodes customizable |
Interface protection | 600W surge protection,1500V ESD protection |
Data interface | 8-pin connector or DB9 |
Optical interface | FC |
Dimension | 69mm(W)*100mm(D)*22mm(H) |
Operating temperature | -25℃ to 70℃ |
Maintaining temperature | -40℃ to 85℃ |
Humidity | 5%-95%RH |
Input power | 12V input |
Power Consumption | 2W |
Application
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Product Categories : Fiber Optic Modem > RS485/RS422/RS232 To Fiber Converter