The UT-728 PCI converter card, compatible with RS-422 and RS-485 standards, is capable of converting single-ended PCI signals to balanced differential RS-422/RS-485 signals with a fast transient voltage suppressor protector, which is designed to protect RS-422/RS-485 interfaces with today's advanced TVS (TRANSIENT Under normal conditions, the TVS tube is in a high resistance state. When the two ends of the TVS tube are subjected to an instantaneous high-energy shock, it can reduce the impedance at both ends at a very high rate and absorb a large current, thus clamping the voltage at both ends at a predetermined value and protecting the circuit components behind from damage due to transient high-voltage shock. This protector can effectively suppress lightning (LIGHTNING) and ESD, providing 600W of lightning surge protection power per line, as well as surge voltages and transient over-voltages generated by various causes on the line, and the extremely small inter-pole capacitance ensures high-speed transmission of the RS-422/RS-485 interface.

● Hardware Interface 

     Connection Type: 1 DR62 Female

     BUS: 32 bit Universal PCI

● Signal

     RS-422: T/R+, T/R-, RXD+, RXD-, GND

     RS-485: Data+(A) Data-(B) GND

● Transmission rate: 300bps-921.6kbps

● Data bits: 5, 6, 7, 8

● Stop bits: 1, 1.5, 2

● Parity bits: None, Even, odd, Space, Mark

● Stream control: RTS/CTS XON/XOFF

● Operating temperature: -40～85°C

● Interface protection: RS-422, RS-485 interface surge protection of 600W per line, ±15K V electrostatic protection

● Transmission distance: RS-485/422 communication distance up to 1.2Km

● Support system: Win2000/ 2003/ XP/ Vista/ 2003_ Server/ NT4.0/ CE 4.2/ 5.0/ 6.0/ Vxworks/ Linux 2.4.x/ 2.6.x

DB9 pin type: RS-485/RS-422 output signal pin assignment (Port1-Port8)

UT-728 Datasheet

UT-728 Driver