UT-728, 8-port Industrial RS-485/422 PCI Multiport PCI Serial Card with RS-422 and RS-485

Specifications:
Hardware interface
    Connection Type: DR44 female head x 1
    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 bit: 1,1.5,2

Check bit: None Even odd Space Mark

Flow control: RTS/CTS XON/XOFF

Operating Temperature: -45℃～80℃

Interface protection: 600W surge protection per line for RS-422, RS-485
interface, 15K V± static protection

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

Supporting system: Win2000/ 2003/ XP /Vista / 2003_Server /NT4.0/CE 4.2 /5.0/6.0/Vxworks/Linux 2.4.x/2.6.x
RS-422/485 interface rate reaches up to 921.6Kbps. It supports 64byte FIFO driver and built-in hardware flow control. All-purpose PCI is compatible PCI and PCI-X with 3.3/5V.


C.    Connector and Signal
1.    DB9 PIN: RS-485/RS-422 output signal pin distribution (Port1-Port8)

Description:

UT-728 PCI converter card is compatible with RS-422 and RS-485 standards, and is able to convert PCI signals into balanced differential RS-422/RS-485 signals. It is equipped with a high-speed transient voltage suppressing protector, which is designed to protect the RS-422/RS-485 interface. The state-of-the-art TVS, Transient Voltage Suppressor, is being used in the system. Under normal circumstances, the TVS tube remains in high-impedance status. When two ends of the TVS tube receive transient high energy impact, it reduces the impedance at both ends in an extremely rapid manner to absorb the huge amount of current. Furthermore, it suppresses voltages at both ends to a preprogrammed value to protect circuit components from damages caused by transient high voltage impacts. The protector can effectively suppress lightning and ESD. It also provides 600W of lightening surge protector power for every line, and protections against surge voltage and transient overvoltage caused by any other factors. It also guarantees the high-speed transmission of RS-422/RS-485 interfaces with extremely small capacitance.