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MODEL277/B : RS485/422 to optic fiber converter

Products Content:
The Model277/B Series converter is equipped with a multiple interface circuit that can handle RS-422/485 serial interfaces andmulti-mode or single- mode fiber. Model277/B converters are used to extend serial transmission distance up to 2 km (multi-mode fiber) or up to 20-100km (single- mode fiber). Note that the RS-422/485 interfaces cannot be used on the same Model277/B at the same time to convert to fiber.Auto Baud Rate Detection
The Model277/B Series incorporates a method for automatically detecting the serial signal baud rate by hardware. This is an extremely convenient feature for the user. Even if a device’s baud rate is changed, the signal will still be transmitted through the RS-422/485 to fiber converter without any problem.
Features
1.Auto sense serial signal rate, zero delay automatic transmit
2.Adopt automatic send data control, auto distinguish and control data transfer direction
3.0-120Kbps the highest rate
4.Supply two interface (RS485/422)
5.Multi-mode 2KM, signal-mode 20-100KM
Communication
Standard Accord RS-485, RS-422 standard
RS-485 signal D+, D-, GND
RS-422 signal R+, R-, T+, T-, GND
Fiber signal IN, OUT
Working format Asynchronism, point to point or multi-point
Direction control Adopt automatic send data control , auto distinguish and control data transfer direction
Band rate 0-120Kbps, auto serial band rate test
Fiber wavelength Multi-mode 850nm, signal-mode 1310nm
Electricity port transmission RS-485/422 port 1200M
Optic port transmission

Multi-mode 2KM, signal-mode 20, 40, 60KM                Single-mode: 8.3/125, 8.7/125, 9/125, or 10/125 μm
Multi-mode: 50/125, 62.5/125, or 100/140 μm

Loading RS-485/422 port Support 32 port loop environment(or handtailor 128 point)
Interface protection 600W surge protection, 15KV ESD protection
Electricity connector 5 terminal block
Optic port connevtor Multi-mode adopt ST/SC connector, signal-mode adopt FC/ST/SC connector
Environment
Working temperature -25 to 70℃
Storage temperature -40 to 85℃
Humidity Relative humidity 5% to 95%
Power
Input power
5VDC power supply
Consumption
2W
Dimension
L*W*H 100mm*69mm*22mm
Shell Iron
Color White
Weight 230g




3One_Serial to fiber converters

MODEL277 : RS232/485/422 to optic fiber converter
MODEL277/A : RS232 to optic fiber converter



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