Product name： UOTEK USB to RS-485/422 Converter USB 2.0
Model： UT-885
● Standards: USBV1.1, 1.0, 2.0, RS-485, RS-422 TIA/EIA
● USB signal: VCC, DATA+, DATA-, GND, FG
● RS-485 signal: T/R+, T/R-, GND
● RS-422 signal: T+, T-, R+, R-, GND
● Working mode: Asynchronous, point to point or point to multi-point, 2 wires half-duplex or 4 wires full-duplex
● Direction control: Adopts traffic direction auto control technology
● Baud rate: 300-921.6Kbps auto-detect serial signal
● Loading capacity: Supports point to multi-point communication, allows to connect 32 sets RS-422 or RS-485 device
● Transmission distance: 1,200m(9,600bps) for RS-485/422, no more than 5m for USB
● Port protection: 600W lightning, surge, ±15KV ESD protection
● Connector: USB-A male, RS-485/422 5-pin terminal block
● LEDs for indicating PWR TXD, and RXD activity
● Transmission media: Twisted-pair or shielded cable
● Dimension: 62×33×16mm
● Operating temperature: -40℃ to 85℃
● Relative humidity: 5% to 95%
● Transmission distance: 0-1,200m（921,600bps-300bps）
● Supports Win2000/2003/2008/2012/XP/Vista/7/8/8.1/10/CE/Mac/Linux
UT-885 is a universal USB to RS-485/422 converter, there is no need of external power supply. It complies with USB, RS422, and RS-485 standards; it converts USB signal to a balanced differential RS-422 or RS-485 signal. The built-in fast instant voltage restraint is designed to protect RS-422/RS-485 interface; it adopts advanced TVS (TRANSIENT VOLTAGE SUPPRESSOR) instant voltage restraint; normally, TVS tube is in high impedance state; when both sides of TVS tube suffer from high power impact in a sudden, the voltage restraint will fast lower the impedance from both sides, and absorb in big current; with this, the voltage on both sides are fixed at presupposed value, protects the component of circuit from damage. This voltage restraint provides 600W each wire with lightning, ESD protection, and surge voltage, instant overvoltage protection on circuit which causing by all reasons; the tiny interelectrode capacitance ensures high speed transmission for RS-422/485 ports. RS-485/422 adopts terminal block as connector. This converter is with built-in zero delay auto receiving and transmitting conversion and unique I/O circuit auto control data flow direction without any handshake signal (RTS, DTR); there is no need jumper wire setting for full duplex (RS-422) and half duplex (RS-485) mode, plug & play. It is compatible with current communication software and hardware.
UT-885 converter provides connection for point to point, point to multipoint communication. For point to multipoint mode, each converter is allowed to connect 32 sets RS-422 or RS-485 device with baud rate 300-921.6Kbps. The power and data flow indicators indicate the working status.
