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Model Number: NT-277-M-#4855
Brand Name: N-NET
Key Specifications/Special Features:
NT-277 is a type of RS-232/RS-485/RS-422 serial port fiber optic modemIt adopts industrial standard design and its wall type outface design supports DIN-rail standard lead rail installation, featuring easy installationPresently 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 kilometersNT-277 can provide users with RS-232/RS-485/RS-422 serial port end-to-end transparent transmissionSince 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 thundersZero-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 85-265V AC
The interface supports 1500W surge protection and 15KV ESD protection
External power supply
| 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: 20km, 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 |
Shipping Information:
- FOB Port: Shekou Shenzhen
- Lead Time: 1 - 3 days
- HTS Code: 8517.62.10 00
- Export Carton Dimensions L/W/H: 48 × 36 × 39 Centimeters
- Export Carton Weight: 16 Kilograms
Main Export Markets:
- Asia
- Australasia
- Central/South America
- Eastern Europe
- Mid East/Africa
- North America
- Western Europe