Digital I/O Boards

For applications that involve a high number of digital I/O lines, UEI offers four models in the PD2-DIO PCI digital I/O board family with either 64 or 128 I/O lines. Instead of following the industry trend of implementing discrete I/O with cumbersome and limiting 8255-type devices, we work with 16-bit line drivers under control of a DSP and custom logic.

As a result, you no longer need to create external circuitry to guarantee power-on startup states; our software allows you to configure startup states in groups of 16-bit ports. You no longer need to design separate interrupt circuitry; our hardware comes with four high-speed interrupts waiting for you to use. The digital I/O lines are protected against electrostatic discharge and automatically detect shorts on power up.

Besides digital I/O, the board features three 24-bit counter/timers as well as two high-speed ESSI (Enhanced Synchronous Serial Interface) ports. The onboard DSP and optimized PCI-bus interface also allow the card to optionally stream digital data to or from disk at rates as high as 2 Mbytes/s and count events up to 16.5 MHz

Distribution panels make all the board's I/O capabilities available for field connection. Further, an optional accessory (PD2-DIO-CONN64-4) distributes 64 of the digital I/O points into four sets of 16 lines through industry-standard 50-pin IDC connectors. They, in turn, attach directly to relay panels available from UEI and many other sources.

The PD2-DIO series provides an ideal way to add digital input and output capability to any PCI based data acquisition (DAQ), measurement and/or control system.




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