Editorial Review Being a multi-function fiber modem in support of asynchronism RS-232,RS-485 and RS-422 communication interface,UT-277 is the best choice for the connection from remote terminal unit (RTU) to host(HOST) or Supervisory Control and Data Acquisition(SCADA). It supports multiple asynchronism communication protocols including RS-232,RS-485 and RS-422, and it also supports a combination of two of the RS-232,RS-485 or RS-422 interfaces as well as both of the working modes, i.e,Two-line (half-duplex) RS-485 and four-line(full duplex) RS-422.The ability to support RS-485 mode for data TXD or SD sending control greatly improves its compatibility with various kinds of software besides a sharp simplification of control method. Various kinds of fiber connection between asynchronism serial interfaces are supported by UT-277 fiber modem. Both half duplex and full duplex communications through fiber between two asynchronism interface devices are supported with a communication distance as far as 4 kilometers for multi-mode and 20 kilometers for single-mode. The transmission rate for RS-232 can reach a maximum of 115.2KBPS,while for RS-485/RS-422 a maximum of 460KBPS can be achieved.Interfaces of different electric standards can be mixed for use with nice EMI/RFT performance,e.g,RS-232 devices can be connected to RS-485/RS-422 devices,and the interface converter or photoelectric isolator can be replaced from RS-232 to RS-485.Two data signal transmissions are supported by UT-277: data sending and data receiving. At the same time, automatic control circuit is alsoprovided for RS-485/RS-422 data transmission. Zero delay for converting time is achieved. ST interfaces are used for fiber connection. * Transmission media: double multi-mode * Working mode: asynchronous half/full duplex, server/client mode * Power pre-consumption: 12db * Working environment: -25,,f to 70,,f, relative humidity 5% to 95%
Features 1) Note: Need 2pcs UT-277 to create communication.One for Tx; another for Rx. 2) Electric interface: RS-422/RS-485/RS-232 Adoption terminal /ST Connectors Transmission rate: 460Kbps Power supply: DC 9V @ 200 mA 3) Electric standard: RS-232, RS-485 or RS-422 (optional) Indicator light: 3 LED indicators for PWR, TX and RX 4) Dimensions: 97mm65mm22mm Chassis: metal shell Wavelength: 820nm multi-mode 1310nm multi-mode 5) Transmission distance: 4 Km for multi-mode,20 km for single-mode
Specification Binding : Electronics Brand : U-Tek EAN : 0799418887258 Label : UTEK Manufacturer : UTEK Model : LYSB00GI9WFQ4-CMPTRACCS PackageDimensions_Weight : 0.75 pounds PackageDimensions : L:11.20 X W:6.50 X H:2.70 ProductGroup : PC Accessory ProductTypeName : COMPUTER_ADD_ON Publisher : UTEK Studio : UTEK Title : UTEK UT-277SM-ST RS-232/422/485 to Optical Fiber Media Converters