PORTWELL Industrial Partner

Portwell LPCI-COM422-8 Serial Communication Port Card an be installed in any 3.3V or 5V PCI slot computer. Supports RS-422 protocol under all OS at baud rates up to 921Kbps. Simple Type: Communication Card

The card was designed for effective multipoint transmission in RS422 (EIS422) protocol. The card is 6.60 inches long and may be installed in an available 5V or 3.3V PCI expansion slot. The card features eight independent, asynchronous RS422 serial ports and type 16550 buffered UARTs. The card meets Universal PCI and MD2 Low Profile PCI Bus Specifications. The card supports RS422 communications and uses differential balanced drivers for long range and noise immunity. It also has the capability to add load resistors to terminate the communications lines. RS422 communications requires that a transmitter supply a bias voltage to ensure a known "zero" state. Also, receiver inputs at each end of the network should be terminated to eliminate "ringing".