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The 7204e low-profile PCI Express serial interface provides two serial ports configurable for RS-422 or RS-485. Each serial port utilizes a 16C950 UART with 128-byte Tx/Rx FIFOs that enables data rates to 921.6K bps for reliable high-speed communications in data intensive applications. This high-performance UART includes 9-bit framing support and is fully software compatible with legacy 16550 applications. In addition, the 14.7456 oscillator and UART's flexible clock prescalar supports the widest range of standard and non-standard baud rates. 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 communications applications and removes the risk of bus contention and data corruption. The Sealevel SeaCOM software driver and utilities make installation and operation easy using Microsoft Windows and Linux operating systems. The 7204e is a PCI Express X1 board compatible with any low profile PCI Express slot. If you have a standard size PCI Express slot, order the 7204eS. Both versions ship with a 36 inch cable that terminates to two DB9M connectors.
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In order to process returned goods, Impulse Embedded Limited uses an internal RMA system. Before returning goods for any reason, please contact Impulse Embedded Limited (returns@impulse-embedded.co.uk) to request an RMA number. Please confirm the reason for the return of the goods, providing the Serial Number, Product Code, and Impulse Embedded Limited Invoice Number (if known).
When returning goods, please ensure they are suitably packed so as to avoid damage, are in the original packaging, along with all accessories, with the outer packaging marked with the RMA number. It is recommended that you use a signed delivery service, as goods lost in transit are not the responsibility of Impulse Embedded Limited.
Please do not write the RMA number on the goods or on the original packaging. Impulse Embedded Limited may refuse returned goods and return them if they arrive without an RMA number, or not in the original packaging.
Sealevel 2 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card
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Select the products of this series that you wish to request quantity or project pricing, or lead time information for:
7204E-ROHS
2 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card – Low Profile Height Bracket
7204ES-ROHS
2 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card – Standard Height Bracket
The engineers who look after the Bakerloo and Metropolitan signalling and control room systems wanted to upgrade the control room display systems with new computers in order to replace aging 19" rack PCs with smaller form factor fanless computers.