Part#: 7204e

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Ultra-COMM+2.422.PCIe

Low Profile PCI Express 2-Port RS-422, RS-485 Serial Interface

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Description

THIS PRODUCT IS OBSOLETE DUE TO LACK OF COMPONENT AVAILABILITY. THE 7204ec IS THE CURRENT VERSION. PLEASE CONTACT YOUR SALES REPRESENTATIVE FOR FURTHER INFORMATION AND OTHER PRODUCT ALTERNATIVES.

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 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, be sure to select the standard profile bracket. The board includes a 36 inch cable that terminates to two DB9M connectors.

Additional information

Board Connector

DB25M

Max Data Rate

921.6K bps

Communications Chip

16C950

Dimensions

5.75 (L) x 2.54 (W)

Electrical Interface

RS-422, RS-485

Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)

PCI Express

Max Data Distance

4000 feet

Cable Connector(s)

DB9M (2)

Oscillator

14.7456 MHz

Operating Temperature

0°C to 70°C (32°F to 158°F)

PC Bracket

Low Profile

# of Ports

2

RoHS Compliant

Yes

Serial Connector(s)

DB9M

Storage Temperature

-50 – +105C

UART Series

950 UART

  • • Compliant with RoHS and WEEE directives
  • • Each port individually configurable for RS-422 or RS-485
  • • 16C950 buffered UARTs with 128-byte FIFOs
  • • Each port supports data rates to 921.6K bps
  • • Oscillator and clock prescalar support wide range of baud rates
  • • Supports 9-bit protocol framing
  • • PCI Express X1 compliant
  • • Compatible with all low profile PCI Express slots
  • • Included 36″ cable terminates to two DB-9M connectors (Item# CA203)

Windows Software

Software: SeaCOM - Windows

Manual

Manual: 7204e

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