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  Editor's Choice  Data acquisition without the skew – almost
Editor's Choice

Data acquisition without the skew – almost

Chris A. Ciufo, Editor, OpenSystems MediaChris A. Ciufo, Editor, OpenSystems Media—June 1, 20090
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In today’s tough economy, finding the most bang for your buck is more important than ever. Whether sampling edibles at your favorite restaurant or performing transient analysis in a lab or benign field environment, getting the best offering for the price is part of a satisfactory experience. CyberResearch is following suit with its two new USB data acquisition modules: the UCDAS 02M2 and 04M1. Suited to high-frequency apps, the compact, rugged devices are touted to deliver “the best price/performance ratio,” plus an “unheard-of” 2 ns skew, the company says. Key to the equation are the 02M2’s two 32-bit counter/timers at 20 MHz and 04M1’s four 16-bit counter/timers at speeds up to 20 MHz. Further perpetuating device performance, the 04M1 has four differential analog inputs running as fast as 1.3 MHz, while 02M2 is equipped with two differential analog inputs at up to 2 MHz.

What if a designer needs more than four inputs? Then synchronization of several modules by external clock connectors or external triggers is a possibility. And that’s not all … both devices’ 32 DIO lines help keep things running like clockwork. Meanwhile, spinoff applications for the two devices include phase-sensitive apps’ simultaneous sampling, high throughput requirements and sensitive modal analysis, and synchronized response/stimulus measurements.

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