PCI-COM422/4

Name: 4-port PCI RS-422 Serial Communication Card
SKU: PCI-COM422/4

4-port PCI RS-422 Serial Communication Card

PCI-COM422/4

The PCI-COM422/4 is a four-port, asynchronous serial communications card designed for use in PCI-Bus computers. It supports RS-422 communications. The card is 6.1 inches (155 mm) long and may be installed in any 5-volt PCI slot in IBM and compatible computers. Type 16550 UARTs are used as the asynchronous communication elements. These include a 16-byte transmit/receive FIFO buffer to protect against lost data in multitasking systems while maintaining 100 percent compatibility with the original IBM serial port. A crystal oscillator is located on the card and permits precise baud rate capability up to 115,200. Higher baud rates, up to 460,800 baud, are achieved by changing a jumper on the card. The driver/receivers used, type 75176, are capable of driving extremely long communication lines at high baud rates. They can drive up to ±60 mA on balanced lines and receive inputs as low as 200 mV differential signal superimposed on common mode noise of +12V to -7V. In case of communication conflict, the driver/receivers feature thermal shutdown. When the card is first installed, Windows will detect it as new hardware and assign it an IRQ number and base address. There are no switches to set or base addresses to assign, making it easy to use. From this point on, the card behaves as standard COM ports at COM 5,6,7, and 8. You cannot set or change the card’s base address, you can only determine what the system has assigned. The PCI Bus supports 64K of I/O address space so your card’s address may be located anywhere in the 0000 to FFFF range.

Product Code: PCI-COM422/4

Categories: ACCES I/O, PCI Cards, Plug-in Serial Cards, Serial Communication

Range: ACCES I/O

Details

The PCI-COM422/4 is a four-port, asynchronous serial communications card designed for use in PCI-Bus computers. It supports RS-422 communications. The card is 6.1 inches (155 mm) long and may be installed in any 5-volt PCI slot in IBM and compatible computers. Type 16550 UARTs are used as the asynchronous communication elements. These include a 16-byte transmit/receive FIFO buffer to protect against lost data in multitasking systems while maintaining 100 percent compatibility with the original IBM serial port. A crystal oscillator is located on the card and permits precise baud rate capability up to 115,200. Higher baud rates, up to 460,800 baud, are achieved by changing a jumper on the card. The driver/receivers used, type 75176, are capable of driving extremely long communication lines at high baud rates. They can drive up to ±60 mA on balanced lines and receive inputs as low as 200 mV differential signal superimposed on common mode noise of +12V to -7V. In case of communication conflict, the driver/receivers feature thermal shutdown. When the card is first installed, Windows will detect it as new hardware and assign it an IRQ number and base address. There are no switches to set or base addresses to assign, making it easy to use. From this point on, the card behaves as standard COM ports at COM 5,6,7, and 8. You cannot set or change the card's base address, you can only determine what the system has assigned. The PCI Bus supports 64K of I/O address space so your card's address may be located anywhere in the 0000 to FFFF range.

Ordering Info

PCI-COM422/4
PCI-COM422/4S1

Downloads

PCI-COM-422-4 Manual (PDF)

0.17MB

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Specification

Universal PCI, PCI-X, 3.3V and 5V compatible (Call for PCI-Express availability)
Four-port serial communications card for PCI bus
Supports RS-422 protocol
Includes type 16550 UART with 16-byte FIFO buffers
Baud rates up to 460,800 baud
Choice of I/O connection methods
Detected as standard COM ports by Windows
No base address or IRQ switches to set

Delivery Information

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ACCES I/O: Warranty and Service Information

All ACCES I/O products distributed in the EMEA come with a 2 year warranty as standard, with additional extension options available upon request. As an official ACCES I/O partner, we are proud to provide customers with peace of mind and the highest quality products, including any systems which have been configured to meet individual specifications.