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Press Releases

New 2-Port RS-422/485 Serial Interface for PCI Express

Author: Jane VanBergen
Date: 07/16/2013
Website: Click here to download this press release and a high-resolution image.
Contact E-mail: jane.vanbergen@sealevel.com

Product Features
  • Two serial ports configurable for RS-422or RS-485
  • Oscillator and clock prescalar support wide range of baud rates
  • Supports 9-bit protocol framing and data rates to 921.6K bps
  • Automatic RS-485 transmitter enable/disable via hardware
  • Fully compliant with all PCI Express X1 slots
  • Supported in Windows and Linux operating systems

LIBERTY, SC, USA Sealevel Systems announces the 7204e, a new PCI Express serial interface adapter that provides two serial ports individually configurable for RS-422 or RS-485 communications. For error-free operation in high-speed serial applications, the board's high-performance 16C950 UART includes 128-byte FIFOs, eight times larger than those found on standard 16550 UARTs. Additionally, the 16C950 UART supports 9-bit framing and is fully software compatible with legacy UART applications. The 7204e is ideal for a variety of applications including point of sale, process control, and test and measurement.

The 7204e's 14.7456 MHz oscillator and the UART's flexible clock prescalar support the widest range of standard and non-standard baud rates. With this advanced architecture, each serial port is capable of data rates to 921.6K bps. In RS-485 mode, the transmitter is automatically enabled in hardware, eliminating the need for application software control. This allows the 7204e to be used with standard serial applications while removing the risk of bus contention and data corruption.

All Sealevel PCI Express serial adapters include SeaCOM software for Windows and Linux operating systems. As an added value, customers also receive WinSSD, a full-featured application for testing and diagnostics including BERT (Bit Error Rate Testing), throughput monitoring, loopback tests, and test pattern message transmissions.

The 7204e is available immediately from stock priced at $239 for low profile (Item# 7204e) and standard size (Item# 7204eS) PCI Express slots. Both items ship with a 36 inch cable that terminates to two DB9M connectors. Standard operating temperature range for is 0 - +70C (extended temperature versions operating from -40C- +85C are available). Like all Sealevel I/O products, the 7204e is backed by a lifetime warranty.


ABOUT SEALEVEL SYSTEMS, INC.

Sealevel Systems, founded in 1986, provides industrial computing solutions in addition to a variety of communications and I/O products including PCI Express and PCI Bus cards, Ethernet serial servers, and USB serial adapters. The product line includes multi-port RS-232, RS-422/485, RS-232/422/485 multi-interface high-speed sync/async, and digital/relay I/O. For more information visit www.sealevel.com or call 864-843-4343.

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