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Part# 7203

(ISO COMM2.PCI)

PCI 2-Port RS-232, RS-422, RS-485 Isolated Serial Interface


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The 7203 PCI serial interface provides two optically isolated serial ports, each individually configurable for RS-232, RS-422, or RS-485. The board is capable of data rates to 460.8K bps and automatically handles RS-485 transmitter enable/disable. The 7203 utilizes 16C850 UARTs to provide 128-byte Tx/Rx FIFOs for maximum reliability in data intensive applications.

Sealevel's SeaCOM software makes installation and operation easy using Microsoft Windows and Linux operating systems.
Host Interface(s) PCI
# of Ports 2
Electrical Interface RS-232, RS-422, RS-485
Optically Isolated Yes
UART Series 850 UART
Serial Connector(s) DB9M
PC Bracket Standard Height
Communications Chip 16C850
Max Data Rate 460.8K bps
Max Data Distance 4000 feet
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
  • • Each port individually configurable for RS-232, RS-422, or RS-485
  • • Optical isolation provides protection against transients and ground loops
  • • 16C850 buffered UARTs with 128-byte FIFOs
  • • Data rates to 460.8K bps
  • • Automatic RS-485 enable/disable
  • • The PCI adapter includes two DB9M connectors






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