RS232/485/422 to optic fiber converter

The Model277 Series converter is equipped with a multiple interface circuit that can handle RS-232, or RS-422/485 serial interfaces andmulti-mode or single- mode fiber. Model277 converters are used to extend serial transmission distance up to 2 km (multi-mode fiber) or up to 20 km (single- mode fiber). Note that the RS-232 and RS-422/485 interfaces cannot be used on the same Model277 at the same time to convert to fiber.Auto Baud Rate Detection The Model277 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 adevice's baud rate is changed, the signal will still be transmitted through the RS-232 or RS-422/485 to fiber converter without any problem. Features 1.Auto sense serial signal rate, zero delay automatic transmit 2.500Kbps the highest rate 3.Supply three interface (RS232/485/422) 4.Multi-mode 2KM, signal-mode 20KM Communication Standard Accord EIA RS-232, RS-485, RS-422 standard RS-232 signalIN, OUT, GND RS-485 signalD+, D-, GNDRS-422 signalR+, R-, T+, T-, GND Fiber signalIN, OUT Working formatAsynchronism, point to point or multi-pointDirection controlAdopt automatic send data control , auto distinguish and control data transfer directionBand rate0-500Kbps, auto-sense signal serial baud rateFiber wavelengthMulti-mode 850nm, signal-mode 1310nm Electricity port transmissionRS-232 port 15M, RS-485/422 port 1200M Optic port transmission Multi-mode 2KM, signal-mode 20-100KM Single-mode: 8.3/125, 8.7/125, 9/125, or 10/125 μm Multi-mode: 50/125, 62.5/125, or 100/140 μmLoading RS-485/422 port Support 32 port loop enviroment(or handtailor 128 point)Interface protection 600W surge protection, 15KVESD protectionElectricity connector8 terminal blockOptic port connectorMulti-mode adopt ST/SC connector, signal-mode adopt FC/ST/SC connectorEnvironment Working temperature-25 to 70Storage temperature-40 to 85Humidity Relative humidity 5% to 95%Power Input power